--- a/vtprotocolplugins/DisplaySink/inc/CVtImageScalerImpl.h Tue Jan 26 12:01:21 2010 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,151 +0,0 @@
-/*
-* Copyright (c) 2004 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: Image Transforms subsystem.
-*
-*/
-
-
-
-
-#ifndef CVTIMAGESCALERIMPL_H
-#define CVTIMAGESCALERIMPL_H
-
-// INCLUDE FILES
-
-#include <e32base.h>
-#include <bitmaptransforms.h>
-
-// FORWARD DECLARATIONS
-
-class CVtImage;
-
-// CLASS DECLARATIONS
-
-/**
-* Image scaler implementation.
-*
-* @lib videosource.lib
-*/
-class CVtImageScalerImpl : public CActive
- {
- protected:
-
- /**
- * Constructor.
- */
- CVtImageScalerImpl();
-
- public:
-
- /**
- * Destructor.
- */
- ~CVtImageScalerImpl();
-
- /**
- * Sets scaler params.
- * @param "aParams" Scaling params, including source and target images.
- * @exception In error situation leaves with one of the system wide
- * error codes.
- */
- void SetSourceTargetL( const CVtImage& aSource, CVtImage& aTarget );
-
- /**
- * Method to check whether bitmap heap locking is needed or not during
- * scaling process.
- * @exception In error situation leaves with one of the system wide
- * error codes.
- * @return ETrue if bitmap heap lock is needed, EFalse otherwise.
- */
- TBool NeedHeapLock() const;
-
- /**
- * Pure virtual scaling method.
- * @param "aContinue" When method returns, this parameter will contain
- * ETrue if new call is needed (i.e. scaling is not yet finished) or
- * EFalse if scaling is complete.
- * @return KErrNone or one of the system wide error codes.
- */
- virtual TInt Scale( TBool& aContinue ) = 0;
-
- protected:
-
- /**
- * Scales using CBitmapScaler, which is slow but works with any
- * Symbian color mode.
- * @param aQuality Scaling quality @see CBitmapScaler::TQualityAlgorithm
- * @exception In error situation leaves with one of the system wide
- * error codes.
- */
- void ScaleWithBitmapScalerL(
- const CBitmapScaler::TQualityAlgorithm aQuality );
-
- private:
-
- /**
- * Pure virtual source and target image validation method.
- * @param "aSource" Constant reference to source image.
- * @param "aTarget" Constant reference to target image.
- * @exception If source or target is not valid, this method leaves
- * with KErrNotSupported.
- */
- virtual void ValidateSourceTargetL(
- const CVtImage& aSource,
- CVtImage& aTarget ) = 0;
-
- /**
- * Method for validating image size.
- * @param "aSize" Size to be validated.
- * @param "aMinSize" Minimum allowed size. If this is not given a default
- * size of TSize( 1, 1 ) is used.
- * @exception If size is not valid within given parameters, this
- * method leaves with KErrNotSupported.
- */
- void LeaveIfNotValidSizeL(
- const TSize& aSize,
- const TSize aMinSize = TSize( 1, 1 ) );
-
- private: // from CActive
-
- /**
- * @see CActive::RunL
- */
- void RunL();
-
- /**
- * @see CActive::DoCancel
- */
- void DoCancel();
-
- protected:
-
- // Source for scaling
- const CVtImage* iSource; // not owned
-
- // Target image (will hold scaled source)
- CVtImage* iTarget; // not owned
-
- // Bitmap scaler instance
- CBitmapScaler* iScaler;
-
- // Active scheduler waiter object
- CActiveSchedulerWait iActiveSchedulerWait;
-
- };
-
-#endif // CVTIMAGESCALERIMPL_H
-
-// End of File
-
-