/*

* Copyright (c) 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:    Image Transforms subsystem.

*

*/

#ifndef CVTIMAGEROTATORIMPLMIRRORFLIP_H

#define CVTIMAGEROTATORIMPLMIRRORFLIP_H

// INCLUDE FILES

#include "CVtImageRotatorImpl.h"

// FORWARD DECLARATIONS

class CVtImage;

class CVtImageIYUV;

// CLASS DECLARATIONS

/**

*  Image scaler implementation.

*

*  @lib videosource.lib

*/

class CVtImageRotatorImplMirrorFlip : public CVtImageRotatorImpl

    {

    public:

        /**

        * C++ constructor

        * @param "aAngle" Selected rotation angle.

        */

        CVtImageRotatorImplMirrorFlip( const CVtImageRotator::TRotationAngle& aAngle );

        /**

        * Rotates the image.

        * @param "aContinue" When method returns, this parameter will contain

        * ETrue if new call is needed (i.e. scaling is not yet finished) or

        * EFalse if scaling is complete.

        * @return KErrNone or one of the system wide error codes.

        */

        TInt Rotate( TBool& aContinue );

        /**

        * Source and target image validation method.

        * @param "aSource" Constant reference to source image.

        * @param "aTarget" Constant reference to target image.

        * @exception If source or target is not valid, this method leaves

        * with KErrNotSupported.

        */

        void ValidateSourceTargetL( 

            const CVtImage& aSource, 

            CVtImage& aTarget );

        /**

        * Method for checking specific rotation angle support.

        * @param "aAngle" Rotation type that will be needed.

        * @return ETrue if aAngle is one of the supported rotation types

        * EFalse otherwise.

        */

        TBool SupportsRotationAngle( const CVtImageRotator::TRotationAngle& aAngle );

    private:

        /**

        * Mirrors image horizontally from iSource to iTarget.

        */

        void Mirror();

        /**

        * Mirrors image horizontally from aTarget to aTarget.

        */

        void Mirror( CVtImage& aTarget );

        /**

        * Mirrors IYUV image from iSource to iTarget.

        */

        void MirrorIYUV

            ( 

            const CVtImageIYUV& aSource, 

            CVtImageIYUV& aTarget 

            );

        /**

        * Mirrors one plane of IYUV image from iSource to iTarget.

        */

        void MirrorPlane

            ( 

            TUint8* aSource,

            TUint8* aTarget,

            TInt aWidth,

            TInt aHeight,

            TInt aBytesPerRow

            );

        /**

        * Flips image vertically from iSource to iTarget.

        */

        void Flip();

        /**

        * Flips image vertically from aTarget to aTarget.

        */

        void Flip( CVtImage& aTarget );

        /**

        * Flips IYUV image vertically from iSource to iTarget.

        */

        void FlipIYUV

            ( 

            const CVtImageIYUV& aSource, 

            CVtImageIYUV& aTarget 

            );

        /**

        * Flips one plane of IYUV.

        */

        void FlipPlane

            ( 

            TUint8* aSource, 

            TUint8* aTarget, 

            TInt aHeight, 

            TInt aBytesPerRow 

            );

    };

#endif // CVTIMAGEROTATORIMPLMIRRORFLIP_H

// End of File