/*

* Copyright (c) 2006-2007 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:  4 bits for red, green and blue component in a pixel.

*

*/

//  INCLUDE FILES

#include "TMID444Format.h"

inline TUint16 ConvertInternalInline444(const TMIDInternalARGB& aInternal)

{

    // no transparency, so alpha is 0

    return (TUint16)(((aInternal.iR & KFourLeftBits) << KMIDShift4Bits) +

                     (aInternal.iG & KFourLeftBits) +

                     ((aInternal.iB & KFourLeftBits) >> KMIDShift4Bits));

}

inline void ConvertInline444(TMIDInternalARGB& aResult, TUint32 aColor)

{

    aResult.iA = KAlphaFullOpaque;

    aResult.iR = KNativeColors[(aColor & K444RMax) >> KMIDShift8Bits ];

    aResult.iG = KNativeColors[(aColor & K444GMax) >> KMIDShift4Bits ];

    aResult.iB = KNativeColors[(aColor & K444BMax)];

}

void TMID444Format::InitializeL(const TMIDBitmapParameters& aParameters)

{

    TMIDFormatConverter::InitializeL(aParameters);

    iOffset += iTransformer.iPoint.iX + iTransformer.iPoint.iY * iScanlength;

    iBitmap = (TUint16*)aParameters.iPixels;

}

TUint32 TMID444Format::ConvertInternal(const TMIDInternalARGB& aInternal)

{

    return ConvertInternalInline444(aInternal);

}

void TMID444Format::Convert(TMIDInternalARGB& aResult, TUint32 aColor) const

{

    ConvertInline444(aResult, aColor);

}

void TMID444Format::GetPixel(TMIDInternalARGB& aResult) const

{

    ConvertInline444(aResult, iBitmap[ iOffset ]);    // CSI: 2 Wrong index means implementation error #

}

TUint8 TMID444Format::GetAlpha() const

{

    // we need only last 8 bits since it is either white or black

    return (TUint8)(((TUint16*)iAlphaBitmap)[ iOffset ] & KMIDEightRightBits);   // CSI: 2 Wrong index means implementation error #

}

void TMID444Format::PlotPixel(const TMIDInternalARGB& aInternal)

{

    iBitmap[ iOffset ] = ConvertInternalInline444(aInternal);    // CSI: 2 Wrong index means implementation error #

}

TBool TMID444Format::CheckSize(TInt aPixelSize, TInt aLastDrawnPixelOffset)

{

    return((aLastDrawnPixelOffset * KBytesInPixel444) <= aPixelSize);

}