--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/skins/AknSkins/rlpluginsrc/AknsRlEffectPluginNoise.cpp Thu Dec 17 09:14:12 2009 +0200
@@ -0,0 +1,347 @@
+/*
+* 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: Adds grayscale noise to bitmap image.
+*
+*/
+
+
+// INCLUDE FILES
+#include <e32math.h>
+
+#include "AknsRlEffectPluginNoise.h"
+#include "AknsRlEffectUtil.h"
+
+// ===================== TEMPLATED IMPL. OF NOISE ==============================
+/**
+* Template implementation of Noise. Type defines the used data type for
+* iterating over the bitmap data. X, R, G and B define the used pixel color bit
+* layout.
+*
+* Adding the noise works as the uniform noise in Paint Shop Pro (result-wise).
+*
+* Current pixel value
+* |
+* -127 v 127
+* |-------|------+------|--------|
+*
+* \ - - - - - /
+* current intensity value
+* \ - - - full intensity - - - /
+* (255)
+*
+* The current color channel value is displaced by random value in range
+* [-intensity/2, intensity/2]. Intensity value 0 will result in the original
+* image.
+*/
+template<class Type,TInt X, TInt R, TInt G, TInt B>
+class AknsRlEffectNoise
+ {
+ public:
+ //------------------------------------------------------------------------
+ static void Process( const CFbsBitmap& aTarget,
+ const CFbsBitmap& aSource,
+ const TInt aSeed,
+ const TInt aIntensity )
+ {
+ // 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;
+ TInt rnd;
+ TInt64 seed( aSeed );
+
+ aTarget.LockHeap( ETrue ); // Lock the global bitmap heap
+ Type* dataT = reinterpret_cast<Type*>( aTarget.DataAddress() );
+ Type* dataS = reinterpret_cast<Type*>( aSource.DataAddress() );
+
+ for( TInt index = 0; index < pixelCount; ++index )
+ {
+ // Note: It is assumed that arithmetic shifting is supported
+ // -> negative values are shifted correctly
+ rnd = (((Math::Rand( seed ) % 256) * aIntensity ) >> 8) - ( aIntensity >> 1 );
+
+ r = AknsRlRgb<Type,X,R,G,B>::R8(*dataS);
+ g = AknsRlRgb<Type,X,R,G,B>::G8(*dataS);
+ b = AknsRlRgb<Type,X,R,G,B>::B8(*dataS);
+
+ r = r + rnd;
+ g = g + rnd;
+ b = b + rnd;
+
+ 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 ); // Unlock the global bitmap heap
+ }
+ }; // End of AknsRlEffectNoise
+
+// ===================== GRAYSCALE IMPL. OF NOISE ==============================
+class AknsRlEffectNoiseGray
+ {
+ public:
+ //------------------------------------------------------------------------
+ static void Process( const CFbsBitmap& aTarget,
+ const CFbsBitmap& aSource,
+ const TInt aSeed,
+ const TInt aIntensity )
+ {
+ TInt width = CFbsBitmap::ScanLineLength( aSource.SizeInPixels().iWidth,
+ aSource.DisplayMode() );
+ TInt height = aSource.SizeInPixels().iHeight;
+
+ TInt pixelCount = width * height;
+ TInt shade, rnd;
+ TInt64 seed( aSeed );
+
+ aTarget.LockHeap( ETrue ); // Lock the global bitmap heap
+ TUint8* dataT = reinterpret_cast<TUint8*>( aTarget.DataAddress() );
+ TUint8* dataS = reinterpret_cast<TUint8*>( aSource.DataAddress() );
+
+ for( TInt index = 0; index < pixelCount; ++index )
+ {
+ // Note: It is assumed that arithmetic shifting is supported
+ // -> negative values are shifted correctly
+ rnd = (((Math::Rand( seed ) % 256) * aIntensity ) >> 8) - ( aIntensity >> 1 ); //lint !e702 Arithmetic shifting assumed
+
+ shade = (*dataS) + rnd;
+
+ if( shade < 0 )
+ *dataT = 0;
+ else if( shade > 255 )
+ *dataT = 255;
+ else
+ *dataT = TUint8(shade);
+
+ dataT++;
+ dataS++;
+ }
+
+ aTarget.UnlockHeap( ETrue ); // Unlock the global bitmap heap
+ }
+ }; // End of AknsRlEffectNoise
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginNoise::CAknsRlEffectPluginNoise
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CAknsRlEffectPluginNoise::CAknsRlEffectPluginNoise()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+//
+CAknsRlEffectPluginNoise::~CAknsRlEffectPluginNoise()
+ {
+ iContext = NULL;
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginNoise::EffectUid
+// -----------------------------------------------------------------------------
+//
+TUid CAknsRlEffectPluginNoise::EffectUid() const
+ {
+ return TUid::Uid( KAknsRlEffectPluginNoiseUID );
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginNoise::Effect
+// -----------------------------------------------------------------------------
+//
+MAknsRlEffect* CAknsRlEffectPluginNoise::Effect( const TInt aInterface )
+ {
+ if( aInterface == KAknsRlEffectPluginInterfaceEffect )
+ return this;
+ return NULL;
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginNoise::InitializeL
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginNoise::InitializeL()
+ {
+ iContext = NULL;
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginNoise::Release
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginNoise::Release()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginNoise::ActivateL
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginNoise::ActivateL( MAknsRlEffectContext* aContext )
+ {
+ if( !aContext ) // We absolutely need the context
+ {
+ User::Leave( KErrArgument );
+ }
+
+ iContext = aContext;
+
+ iSeed = 0;
+ iIntensity = 127;
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginNoise::Deactivate
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginNoise::Deactivate()
+ {
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginNoise::SetParametersL
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginNoise::SetParametersL( MAknsRlParameterIterator& aParameters )
+ {
+ // Iterate over available parameters
+ while( aParameters.HasNext() )
+ {
+ const TAknsRlParameterData* param = aParameters.NextL();
+
+ // Fetch seed value
+ if( param->iName->Compare( KAknsRlEffectNoiseSeed ) == 0 )
+ {
+ if( param->iType != EAknsRlParameterTypeNumber )
+ User::Leave( KErrArgument );
+
+ iSeed = param->iNumber;
+ }
+ // Fetch intensity value
+ else if( param->iName->Compare( KAknsRlEffectNoiseIntensity ) == 0 )
+ {
+ if( param->iType != EAknsRlParameterTypeNumber )
+ User::Leave( KErrArgument );
+
+ iIntensity = param->iNumber;
+ }
+ }
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginNoise::GetCapabilities
+// -----------------------------------------------------------------------------
+//
+void CAknsRlEffectPluginNoise::GetCapabilities( TAknsRlEffectCaps& aCaps )
+ {
+ aCaps.iOutputLayerSupport = KAknsRlLayerRGBOnly;
+ aCaps.iInputLayerASupport = KAknsRlLayerRGBOnly;
+ aCaps.iInputLayerBSupport = KAknsRlLayerNone;
+ }
+
+// -----------------------------------------------------------------------------
+// CAknsRlEffectPluginNoise::Render
+// -----------------------------------------------------------------------------
+//
+TInt CAknsRlEffectPluginNoise::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();
+
+ // Rgb -> Rgb modes
+ if( EColor64K == modeS && EColor64K == modeT )
+ {
+ AknsRlEffectNoise<TUint16,0,5,6,5>::Process(
+ *dataTarget.iRGBBitmap,
+ *dataSource.iRGBBitmap,
+ iSeed,
+ iIntensity );
+ }
+ else if( EColor16MU == modeS && EColor16MU == modeT )
+ {
+ AknsRlEffectNoise<TUint32,8,8,8,8>::Process(
+ *dataTarget.iRGBBitmap,
+ *dataSource.iRGBBitmap,
+ iSeed,
+ iIntensity );
+
+ }
+ // Gray -> Gray mode
+ else if( EGray256 == modeS && EGray256 == modeT )
+ {
+ AknsRlEffectNoiseGray::Process(
+ *dataTarget.iRGBBitmap,
+ *dataSource.iRGBBitmap,
+ iSeed,
+ iIntensity );
+ }
+ else
+ {
+ // Provided layers have illegal display mode combination
+ return KErrArgument;
+ }
+ }
+ else
+ {
+ // Required layers were not provided
+ return KErrArgument;
+ }
+
+ return KErrNone;
+ }
+
+// End of File