--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtprotocolplugins/VideoSource/inc/cmultiframeloopao.h	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,113 @@
+/*
+* Copyright (c) 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:  Video Source subsystem.
+*
+*/
+
+
+#ifndef C_MULTIFRAMELOOPAO_H
+#define C_MULTIFRAMELOOPAO_H
+
+// INCLUDE FILES
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class CMultiframeProvider;
+
+// MACROS
+
+/**
+* @lib videosource.lib
+* Handles data looping in multi frame sharing case.
+*/
+NONSHARABLE_CLASS( CMultiframeloopAO ) : public CActive
+    {
+    public: // Constructors and destructor
+
+        /**
+        * Constructor.
+        * @param "aRequester" instance to requester
+        */
+        CMultiframeloopAO( CMultiframeProvider* aRequester );
+
+        /**
+        * Destructor.
+        */
+        ~CMultiframeloopAO();
+        
+        /**
+        * Decreases number of free bitmaps
+        * @param "aCount" count how many bitmaps to be removed
+        */
+        void RemoveFreeBitmaps( TInt aCount );
+        
+        /**
+        * Increases number of free bitmaps
+        * @param "aCount" count how many bitmaps to be increased
+        */
+        void SetFreeBitmaps( TInt aCount );
+        
+        /**
+        * Cancels looping and completes request in correct thread.
+        */
+        void CancelDataLoop();
+
+    public: // New functions
+
+        /**
+        * Activates looping and completes request in correct thread. 
+        */
+        void Signal( );
+        
+       	/**
+        * Sets frame count.
+        * @param "aCount" frame count
+        */
+        void SetFrameCount( TInt aCount );
+
+    private:    // Functions from base classes
+
+        /**
+        * From CActive. See CActive for description.
+        */
+        void RunL();
+
+        /**
+        * From CActive. See CActive for description.
+        */
+        void DoCancel();
+
+    private:    // Data
+
+        // Pointer to requester.
+        CMultiframeProvider* iRequester; // not owned
+        
+        // Index of frame to be handled
+        TInt iIndex;
+        
+        // Total nuber of frames
+        TInt iFramecount;
+        
+        // Number of free bitmaps 
+        TInt iFreeBMCount;
+        
+        // Id of thread whose active scheduler this instance is added into.
+        TThreadId iThreadId;
+        
+        // A flag to indecate loop ao must be stopped
+        TBool iRequireStopping;
+    };
+#endif //C_MULTIFRAMELOOPAO_H
+
+// End of File