--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtprotocolplugins/DisplaySink/inc/CVtImageRotatorImpl.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,120 @@
+/*
+* 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 CVTIMAGEROTATORIMPL_H
+#define CVTIMAGEROTATORIMPL_H
+
+// INCLUDE FILES
+
+#include "cvtimagerotator.h"
+
+// FORWARD DECLARATIONS
+
+class CVtImage;
+
+// CLASS DECLARATIONS
+
+/**
+*  Image scaler implementation.
+*
+*  @lib videosource.lib
+*/
+class CVtImageRotatorImpl : public CBase
+    {
+    public:
+
+        /**
+        * 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 rotation 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 Rotate( TBool& aContinue ) = 0;
+
+        /**
+        * Pure virtual method for checking specific rotation angle support.
+        * @param "aAngle" Rotation type that will be needed.
+        * @return ETrue if aAngle is one of the supported rotation types
+        * EFalse otherwise.
+        */
+        virtual TBool SupportsRotationAngle( const CVtImageRotator::TRotationAngle& aAngle ) = 0;
+
+        /**
+        * Sets rotation angle to be used.
+        * @param "aAngle" Rotation type that will be needed.
+        */
+        void SetAngle( const CVtImageRotator::TRotationAngle& aAngle );
+
+    protected:
+
+        /**
+        * C++ constructor.
+        * @param "aAngle" Rotation type that will be needed.
+        */
+        CVtImageRotatorImpl( const CVtImageRotator::TRotationAngle& aAngle );
+
+    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;
+
+    protected:
+
+        // Source for scaling
+        const CVtImage* iSource; // not owned
+
+        // Target image (will hold scaled source)
+        CVtImage* iTarget; // not owned
+
+        // Selected rotation angle
+        CVtImageRotator::TRotationAngle iAngle;
+    };
+
+#endif // CVTIMAGEROTATORIMPL_H
+
+// End of File
+
+