/*

* Copyright (c) 2005-2006 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:  YUV format transcoder.

*

*/

#ifndef TVTYUVCONVERTER_H

#define TVTYUVCONVERTER_H

#include <e32base.h>

/**

 *  Yuv format transcoder.

 *

 *  Implements conversion between different YUV formats.

 *

 *  @lib VTImageConverter.lib

 *  @since S60 v3.1

 */

NONSHARABLE_CLASS( VtYuvConverter )

    {

public:

    /**

     * Converts from 4:2:0 planar source image to 4:2:2 interleaved image.

     *

     * @since S60 v3.1

     * @param aSource Constant descriptor containing source image data.

     * @param aSize Size of the image in pixels.

     * @param aTarget Modifiable descriptor for target image data.

     * @param aStide Number of bytes per scanline in target buffer.

     * @return KErrNone if conversion was successful, KErrUnderflow if result

     * does not fit in target buffer or KErrArgument if source buffer's size

     * does not match with the given source size in pixels.

     */

    static TInt ConvertFrom420PlanarTo422Interleaved(

        const TDesC8& aSource,

        const TSize& aSize,

        TDes8& aTarget,

        TInt aStride );

private:

    /**

     * Constructor.

     */

    VtYuvConverter();

    /**

     * Copy constructor.

     */

    VtYuvConverter( const VtYuvConverter& );

    /**

     * Returns image size in bytes for 420 planar image that has given pixel

     * size.

     */

    static TInt ByteSize420Planar( const TSize& aSizeInPixels );

    /**

     * Returns image size in bytes for 422 interleaved image that has given

     * pixel size.

     */

    static TInt ByteSize422Interleaved( const TSize& aSizeInPixels );

    };

#endif // TVTYUVCONVERTER_H