1 /*

     2 * Copyright (c) 2005-2006 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  YUV format transcoder.

    15 *

    16 */

    17 

    18 

    19 #ifndef TVTYUVCONVERTER_H

    20 #define TVTYUVCONVERTER_H

    21 

    22 #include <e32base.h>

    23 

    24 /**

    25  *  Yuv format transcoder.

    26  *

    27  *  Implements conversion between different YUV formats.

    28  *

    29  *  @lib VTImageConverter.lib

    30  *  @since S60 v3.1

    31  */

    32 NONSHARABLE_CLASS( VtYuvConverter )

    33     {

    34 public:

    35 

    36     /**

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

    38      *

    39      * @since S60 v3.1

    40      * @param aSource Constant descriptor containing source image data.

    41      * @param aSize Size of the image in pixels.

    42      * @param aTarget Modifiable descriptor for target image data.

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

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

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

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

    47      */

    48     static TInt ConvertFrom420PlanarTo422Interleaved(

    49         const TDesC8& aSource,

    50         const TSize& aSize,

    51         TDes8& aTarget,

    52         TInt aStride );

    53 

    54 private:

    55 

    56     /**

    57      * Constructor.

    58      */

    59     VtYuvConverter();

    60 

    61     /**

    62      * Copy constructor.

    63      */

    64     VtYuvConverter( const VtYuvConverter& );

    65 

    66     /**

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

    68      * size.

    69      */

    70     static TInt ByteSize420Planar( const TSize& aSizeInPixels );

    71 

    72     /**

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

    74      * pixel size.

    75      */

    76     static TInt ByteSize422Interleaved( const TSize& aSizeInPixels );

    77     };

    78 

    79 #endif // TVTYUVCONVERTER_H