--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/skins/AknSkins/rlpluginsrc/AknsRlEffectPluginContrast.cpp Thu Dec 17 09:14:12 2009 +0200
@@ -0,0 +1,268 @@
+/*
+* Copyright (c) 2004-2008 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: Provides functionality adjust image contrast.
+*
+*/
+
+
+// INCLUDE FILES
+#include "AknsRlEffectPluginContrast.h"
+#include "AknsRlEffectUtil.h"
+#include "fx_asm_versions.h"
+
+// ================ TEMPLATE IMPL. OF CONTRAST =================================
+/**
+* Template implementation of Contrast. Type defines the used data type for
+* iterating over the bitmap data. X, R, G and B define the used pixel color bit
+* layout.
+*/
+template<class Type,TInt X, TInt R, TInt G, TInt B>
+class AknsRlEffectContrast
+ {
+ public:
+ //------------------------------------------------------------------------
+ static void Process( const CFbsBitmap& aTarget,
+ const CFbsBitmap& aSource,
+ const TInt aAdjustment )
+ {
+ // ScanLineLength returns bytes, but width must match the Type
+ TInt width = CFbsBitmap::ScanLineLength( aSource.SizeInPixels().iWidth,
+ aSource.DisplayMode() ) / sizeof(Type);
+ TInt height = aSource.SizeInPixels().iHeight;
+
+ TInt pixelCount = width * height;
+ TInt r,g,b;
+
+ aTarget.LockHeap( ETrue ); // Lock the global bitmap buffer
+ Type* dataT = reinterpret_cast<Type*>( aTarget.DataAddress() );
+ Type* dataS = reinterpret_cast<Type*>( aSource.DataAddress() );
+
+ for( TInt index = 0; index < pixelCount; ++index )
+ {
+ // Contrast is simple, blend with middle gray (127)
+ // Note: It is assumed that arithmetic shifting is supported
+ // -> negative values are shifted correctly
+ r = (AknsRlRgb<Type,X,R,G,B>::R8(*dataS) * (255 + aAdjustment) - aAdjustment * 127) >> 8;
+ g = (AknsRlRgb<Type,X,R,G,B>::G8(*dataS) * (255 + aAdjustment) - aAdjustment * 127) >> 8;
+ b = (AknsRlRgb<Type,X,R,G,B>::B8(*dataS) * (255 + aAdjustment) - aAdjustment * 127) >> 8;
+
+ if( r < 0 ) r = 0; else if( r > 255 ) r = 255;
+ if( g < 0 ) g = 0; else if( g > 255 ) g = 255;
+ if( b < 0 ) b = 0; else if( b > 255 ) b = 255;
+
+ AknsRlRgb<Type,X,R,G,B>::SetRgb8( dataT, TUint8(r), TUint8(g), TUint8(b) );
+
+ dataT++;
+ dataS++;
+ }
+
+ aTarget.UnlockHeap( ETrue );
+ }
+ }; // End of AknsRlEffectContrast
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginContrast::CAknsRlEffectPluginContrast
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CAknsRlEffectPluginContrast::CAknsRlEffectPluginContrast()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CAknsRlEffectPluginContrast::~CAknsRlEffectPluginContrast()
+ {
+ iContext = NULL; // Removes lint nag
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginContrast::EffectUid
+// -----------------------------------------------------------------------------
+//
+TUid CAknsRlEffectPluginContrast::EffectUid() const
+ {
+ return TUid::Uid( KAknsRlEffectPluginContrastUID );
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginContrast::Effect
+// -----------------------------------------------------------------------------
+//
+MAknsRlEffect* CAknsRlEffectPluginContrast::Effect( const TInt aInterface )
+ {
+ if( aInterface == KAknsRlEffectPluginInterfaceEffect )
+ return this;
+ return NULL;
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginContrast::InitializeL
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginContrast::InitializeL()
+ {
+ iContext = NULL;
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginContrast::Release
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginContrast::Release()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginContrast::ActivateL
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginContrast::ActivateL( MAknsRlEffectContext* aContext )
+ {
+ if( !aContext ) // We absolutely need the context
+ {
+ User::Leave( KErrArgument );
+ }
+
+ iContext = aContext;
+
+ iAdjustment = 0;
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginContrast::Deactivate
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginContrast::Deactivate()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginContrast::SetParametersL
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginContrast::SetParametersL( MAknsRlParameterIterator& aParameters )
+ {
+ // Iterate over available parameters
+ while( aParameters.HasNext() )
+ {
+ const TAknsRlParameterData* param = aParameters.NextL();
+
+ // Fetch adjustment value
+ if( param->iName->Compare( KAknsRlEffectContrastAdjustment ) == 0 )
+ {
+ if( param->iType != EAknsRlParameterTypeNumber )
+ User::Leave( KErrArgument );
+
+ iAdjustment = param->iNumber;
+ }
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginContrast::GetCapabilities
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginContrast::GetCapabilities( TAknsRlEffectCaps& aCaps )
+ {
+ aCaps.iOutputLayerSupport = KAknsRlLayerRGBOnly;
+ aCaps.iInputLayerASupport = KAknsRlLayerRGBOnly;
+ aCaps.iInputLayerBSupport = KAknsRlLayerNone;
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginContrast::Render
+// -----------------------------------------------------------------------------
+//
+TInt CAknsRlEffectPluginContrast::Render( const TAknsRlRenderOpParam& aParam )
+ {
+ if( !iContext ) // We absolutely need the context
+ {
+ return KErrBadHandle;
+ }
+
+ // To do anything we need both, the output layer and input layer
+ if( ( aParam.iOutputLayerStatus & KAknsRlLayerRGBOnly ) &&
+ ( aParam.iInputLayerAStatus & KAknsRlLayerRGBOnly ) )
+ {
+ // Query the layers, uninitialized because we process the whole image
+ TAknsRlLayerData dataTarget;
+ TRAPD( err, iContext->GetLayerDataL( dataTarget, aParam.iOutputLayerIndex,
+ aParam.iOutputLayerStatus, EFalse ) );
+ if( KErrNone != err )
+ return KErrArgument;
+
+ TAknsRlLayerData dataSource;
+ TRAP( err, iContext->GetLayerDataL( dataSource, aParam.iInputLayerAIndex,
+ aParam.iInputLayerAStatus, EFalse ) );
+ if( KErrNone != err )
+ return KErrArgument;
+
+ if( !dataTarget.iRGBBitmap ) // We need the target bitmap
+ return KErrBadHandle;
+
+ if( !dataSource.iRGBBitmap ) // We need the source bitmap
+ return KErrBadHandle;
+
+ TDisplayMode modeT = dataTarget.iRGBBitmap->DisplayMode();
+ TDisplayMode modeS = dataSource.iRGBBitmap->DisplayMode();
+
+#ifndef ARM_VERSION // winscw
+ // Process the filter
+ if( EColor64K == modeS && EColor64K == modeT )
+ {
+ AknsRlEffectContrast<TUint16,0,5,6,5>::Process(
+ *dataTarget.iRGBBitmap,
+ *dataSource.iRGBBitmap,
+ iAdjustment );
+ }
+ else if( EColor16MU == modeS && EColor16MU == modeT )
+ {
+ AknsRlEffectContrast<TUint32,8,8,8,8>::Process(
+ *dataTarget.iRGBBitmap,
+ *dataSource.iRGBBitmap,
+ iAdjustment );
+ }
+#else // ARM
+ // Process the filter
+ if( (EColor64K == modeS && EColor64K == modeT) ||
+ (EColor16MU == modeS && EColor16MU == modeT) )
+ {
+ AProcessContrast(*dataTarget.iRGBBitmap,
+ *dataSource.iRGBBitmap,
+ iAdjustment,
+ modeS );
+ }
+#endif
+ else
+ {
+ // Provided layers have illegal display mode combination
+ return KErrArgument;
+ }
+ }
+ else
+ {
+ // Required layers were not provided
+ return KErrArgument;
+ }
+
+ return KErrNone;
+ }
+
+// End of File