skins/AknSkins/rlpluginsrc/AknsRlEffectPluginInvert.cpp
author Dario Sestito <darios@symbian.org>
Fri, 19 Nov 2010 15:21:06 +0000
branchRCL_3
changeset 129 67a72ace5294
parent 0 05e9090e2422
permissions -rw-r--r--
Fix for Bug 3172 - Recorder application demands Memory card
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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/*
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* Copyright (c) 2004-2008 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Inverts bitmap channels.
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*
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*/
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// INCLUDE FILES
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#include "AknsRlEffectPluginInvert.h"
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#include "AknsRlEffectUtil.h"
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// ==================TEMPLATE IMPL. OF INVERT ==================================
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/**
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* Template implementation of Invert. Type defines the used data type for
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* iterating over the bitmap data. X, R, G and B define the used pixel color bit
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* layout.
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*/
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template<class Type,TInt X, TInt R, TInt G, TInt B>
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class AknsRlEffectInvert
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    {
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    public:
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    //------------------------------------------------------------------------
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    static void Process( const CFbsBitmap& aTarget,
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                         const CFbsBitmap& aSource,
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                         const TUint8 aChannelMask,
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                         const TInt aBlendFactor )
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        {
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        // ScanLineLength returns bytes, but width must match the Type
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        TInt width  = CFbsBitmap::ScanLineLength( aSource.SizeInPixels().iWidth,
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                                                  aSource.DisplayMode() ) / sizeof(Type);
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        TInt height = aSource.SizeInPixels().iHeight;
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        TInt pixelCount = width * height;
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        TInt r,g,b;
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        aTarget.LockHeap( ETrue ); // Lock the global bitmap heap
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        Type* dataT = reinterpret_cast<Type*>( aTarget.DataAddress() );
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        Type* dataS = reinterpret_cast<Type*>( aSource.DataAddress() );
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        for( TInt index = 0; index < pixelCount; ++index )
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            {
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            r = AknsRlRgb<Type,X,R,G,B>::R8(*dataS);
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            g = AknsRlRgb<Type,X,R,G,B>::G8(*dataS);
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            b = AknsRlRgb<Type,X,R,G,B>::B8(*dataS);
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            if( CAknsRlEffectPluginInvert::EMaskR & aChannelMask )
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                r = 255 - r;
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            if( CAknsRlEffectPluginInvert::EMaskG & aChannelMask )
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                g = 255 - g;
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            if( CAknsRlEffectPluginInvert::EMaskB & aChannelMask )
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                b = 255 - b;
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            // Exposure blending
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            // Note: It is assumed that arithmetic shifting is supported
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            // -> negative values are shifted correctly
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            r = ( r * aBlendFactor + (255 - aBlendFactor) * AknsRlRgb<Type,X,R,G,B>::R8(*dataS) ) >> 8;
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            g = ( g * aBlendFactor + (255 - aBlendFactor) * AknsRlRgb<Type,X,R,G,B>::G8(*dataS) ) >> 8;
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            b = ( b * aBlendFactor + (255 - aBlendFactor) * AknsRlRgb<Type,X,R,G,B>::B8(*dataS) ) >> 8;
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            if( r < 0 ) r = 0; else if( r > 255 ) r = 255;
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            if( g < 0 ) g = 0; else if( g > 255 ) g = 255;
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            if( b < 0 ) b = 0; else if( b > 255 ) b = 255;
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            AknsRlRgb<Type,X,R,G,B>::SetRgb8( dataT, TUint8(r), TUint8(g), TUint8(b) );
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            dataT++;
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            dataS++;
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            }
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        aTarget.UnlockHeap( ETrue ); // Unlock the global bitmap heap
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        }
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    };
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// ================== GRAYSCALE IMPL. OF INVERT ================================
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class AknsRlEffectInvertGray
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    {
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    public:
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    //------------------------------------------------------------------------
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    static void Process( const CFbsBitmap& aTarget,
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                         const CFbsBitmap& aSource,
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                         const TInt aBlendFactor )
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        {
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        TInt width = CFbsBitmap::ScanLineLength( aSource.SizeInPixels().iWidth,
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                                                 aSource.DisplayMode() );
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        TInt height = aSource.SizeInPixels().iHeight;
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        TInt pixelCount = width * height;
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        TInt shade;
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        aTarget.LockHeap( ETrue ); // Lock the global bitmap heap
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        TUint8* dataT = reinterpret_cast<TUint8*>( aTarget.DataAddress() );
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        TUint8* dataS = reinterpret_cast<TUint8*>( aSource.DataAddress() );
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        for( TInt index = 0; index < pixelCount; ++index )
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            {
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            shade = 255 - (*dataS);
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            // Exposure blending
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            // Note: It is assumed that arithmetic shifting is supported
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            // -> negative values are shifted correctly
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            shade = ( shade * aBlendFactor + (255 - aBlendFactor) * (*dataS) ) >> 8; //lint !e702 Arithmetic shifting assumed
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            if( shade < 0 ) shade = 0;
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            else if( shade > 255 ) shade = 255;
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            *dataT = TUint8(shade);
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            dataT++;
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            dataS++;
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            }
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        aTarget.UnlockHeap( ETrue ); // Unlock the global bitmap heap
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        }
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    };
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// CAknsRlEffectPluginInvert::CAknsRlEffectPluginInvert
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// C++ default constructor can NOT contain any code, that
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// might leave.
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// -----------------------------------------------------------------------------
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//
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CAknsRlEffectPluginInvert::CAknsRlEffectPluginInvert()
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    {
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    }
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// -----------------------------------------------------------------------------
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// Destructor
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// -----------------------------------------------------------------------------
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//
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CAknsRlEffectPluginInvert::~CAknsRlEffectPluginInvert()
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    {
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    iContext = NULL; // Removes lint nag
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    }
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// -----------------------------------------------------------------------------
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// CAknsRlEffectPluginInvert::EffectUid
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// -----------------------------------------------------------------------------
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//
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TUid CAknsRlEffectPluginInvert::EffectUid() const
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    {
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    return TUid::Uid( KAknsRlEffectPluginInvertUID );
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    }
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// -----------------------------------------------------------------------------
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// CAknsRlEffectPluginInvert::Effect
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// -----------------------------------------------------------------------------
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//
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MAknsRlEffect* CAknsRlEffectPluginInvert::Effect( const TInt aInterface )
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    {
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    if( aInterface == KAknsRlEffectPluginInterfaceEffect )
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        return this;
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    return NULL;
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    }
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// -----------------------------------------------------------------------------
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// CAknsRlEffectPluginInvert::InitializeL
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// -----------------------------------------------------------------------------
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//
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void CAknsRlEffectPluginInvert::InitializeL()
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    {
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    iContext = NULL;
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    }
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// -----------------------------------------------------------------------------
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// CAknsRlEffectPluginInvert::Release
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// -----------------------------------------------------------------------------
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//
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void CAknsRlEffectPluginInvert::Release()
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    {
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    }
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// -----------------------------------------------------------------------------
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// CAknsRlEffectPluginInvert::ActivateL
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// -----------------------------------------------------------------------------
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//
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void CAknsRlEffectPluginInvert::ActivateL( MAknsRlEffectContext* aContext )
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    {
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    if( !aContext ) // We absolutely need the context
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        {
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        User::Leave( KErrArgument );
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        }
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    iContext = aContext;
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    iChannelMask = EMaskR | EMaskG | EMaskB;
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    iBlendFactor = 255;
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    }
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// -----------------------------------------------------------------------------
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// CAknsRlEffectPluginInvert::Deactivate
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// -----------------------------------------------------------------------------
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//
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void CAknsRlEffectPluginInvert::Deactivate()
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    {
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    }
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// -----------------------------------------------------------------------------
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// CAknsRlEffectPluginInvert::SetParametersL
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// -----------------------------------------------------------------------------
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//
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void CAknsRlEffectPluginInvert::SetParametersL( MAknsRlParameterIterator& aParameters )
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    {
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    // Iterate over available parameters
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    while( aParameters.HasNext() )
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        {
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        const TAknsRlParameterData* param = aParameters.NextL();
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        // Fetch channel mask value
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        if( param->iName->Compare( KAknsRlEffectInvertChannels ) == 0 )
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            {
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            if( param->iType != EAknsRlParameterTypeNumber )
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                User::Leave( KErrArgument );
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            iChannelMask = TUint8(param->iNumber);
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            }
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        // Fetch blend factor value
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   230
        else if( param->iName->Compare( KAknsRlEffectInvertBlendFactor ) == 0 )
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            {
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   232
            if( param->iType != EAknsRlParameterTypeNumber )
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                User::Leave( KErrArgument );
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   234
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            iBlendFactor = param->iNumber;
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            }
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        }
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    }
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// -----------------------------------------------------------------------------
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// CAknsRlEffectPluginInvert::GetCapabilities
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// -----------------------------------------------------------------------------
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//
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void CAknsRlEffectPluginInvert::GetCapabilities( TAknsRlEffectCaps& aCaps )
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    {
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    aCaps.iOutputLayerSupport = KAknsRlLayerRGBOnly;
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    aCaps.iInputLayerASupport = KAknsRlLayerRGBOnly;
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    aCaps.iInputLayerBSupport = KAknsRlLayerNone;
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   249
    }
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// -----------------------------------------------------------------------------
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// CAknsRlEffectPluginInvert::Render
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// -----------------------------------------------------------------------------
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//
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TInt CAknsRlEffectPluginInvert::Render( const TAknsRlRenderOpParam& aParam )
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   256
    {
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   257
    if( !iContext ) // We absolutely need the context
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        {
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   259
        return KErrBadHandle;
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   260
        }
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   261
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    // To do anything we need both, the output layer and input layer
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   263
    if( ( aParam.iOutputLayerStatus & KAknsRlLayerRGBOnly ) &&
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        ( aParam.iInputLayerAStatus & KAknsRlLayerRGBOnly ) )
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   265
        {
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   266
        // Query the layers, uninitialized because we process the whole image
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        TAknsRlLayerData dataTarget;
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   268
        TRAPD( err, iContext->GetLayerDataL( dataTarget, aParam.iOutputLayerIndex,
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                                             aParam.iOutputLayerStatus, EFalse ) );
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   270
        if( KErrNone != err )
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            return KErrArgument;
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   272
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        TAknsRlLayerData dataSource;
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   274
        TRAP( err, iContext->GetLayerDataL( dataSource, aParam.iInputLayerAIndex,
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                                            aParam.iInputLayerAStatus, EFalse ) );
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   276
        if( KErrNone != err )
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   277
            return KErrArgument;
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   278
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   279
        if( !dataTarget.iRGBBitmap ) // We need the target bitmap
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   280
            return KErrBadHandle;
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   281
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   282
        if( !dataSource.iRGBBitmap ) // We need the source bitmap
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   283
            return KErrBadHandle;
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   284
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   285
        TDisplayMode modeT = dataTarget.iRGBBitmap->DisplayMode();
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   286
        TDisplayMode modeS = dataSource.iRGBBitmap->DisplayMode();
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diff changeset
   287
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   288
        // Rgb -> Rgb modes
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diff changeset
   289
        if( EColor64K == modeS && EColor64K == modeT )
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   290
            {
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diff changeset
   291
            AknsRlEffectInvert<TUint16,0,5,6,5>::Process(
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   292
                            *dataTarget.iRGBBitmap,
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parents:
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   293
                            *dataSource.iRGBBitmap,
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   294
                            iChannelMask,
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   295
                            iBlendFactor );
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parents:
diff changeset
   296
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   297
            }
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parents:
diff changeset
   298
        else if( EColor16MU == modeS && EColor16MU == modeT )
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parents:
diff changeset
   299
            {
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   300
            AknsRlEffectInvert<TUint32,8,8,8,8>::Process(
05e9090e2422 Revision: 200949
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parents:
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   301
                            *dataTarget.iRGBBitmap,
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parents:
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   302
                            *dataSource.iRGBBitmap,
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   303
                            iChannelMask,
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   304
                            iBlendFactor );
05e9090e2422 Revision: 200949
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parents:
diff changeset
   305
            }
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parents:
diff changeset
   306
        // Gray -> Gray mode
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parents:
diff changeset
   307
        else if( EGray256 == modeS && EGray256 == modeT )
05e9090e2422 Revision: 200949
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parents:
diff changeset
   308
            {
05e9090e2422 Revision: 200949
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   309
            AknsRlEffectInvertGray::Process(
05e9090e2422 Revision: 200949
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   310
                            *dataTarget.iRGBBitmap,
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parents:
diff changeset
   311
                            *dataSource.iRGBBitmap,
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   312
                            iBlendFactor );
05e9090e2422 Revision: 200949
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parents:
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   313
            }
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   314
        else
05e9090e2422 Revision: 200949
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parents:
diff changeset
   315
            {
05e9090e2422 Revision: 200949
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parents:
diff changeset
   316
            // Provided layers have illegal display mode combination
05e9090e2422 Revision: 200949
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diff changeset
   317
            return KErrArgument;
05e9090e2422 Revision: 200949
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parents:
diff changeset
   318
            }
05e9090e2422 Revision: 200949
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parents:
diff changeset
   319
        }
05e9090e2422 Revision: 200949
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parents:
diff changeset
   320
    else
05e9090e2422 Revision: 200949
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parents:
diff changeset
   321
        {
05e9090e2422 Revision: 200949
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diff changeset
   322
        // Required layers were not provided
05e9090e2422 Revision: 200949
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parents:
diff changeset
   323
        return KErrArgument;
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parents:
diff changeset
   324
        }
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parents:
diff changeset
   325
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diff changeset
   326
    return KErrNone;
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parents:
diff changeset
   327
    }
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parents:
diff changeset
   328
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parents:
diff changeset
   329
// End of File