--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/convergedcallengine/spsettings/inc/spsbufferedpublisher.h	Tue Feb 02 01:11:09 2010 +0200
@@ -0,0 +1,121 @@
+/*
+* Copyright (c) 2009 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: Logic for bufferred publish and subcribe notifier
+*
+*/
+
+#ifndef C_SPSBUFFEREDPUBLISHER_H
+#define C_SPSBUFFEREDPUBLISHER_H
+
+#include <e32base.h>
+
+/**
+ *  P&S ringbuffer implementation
+ *  
+ *  Ringbuffer size is 127 TUint32:s
+ *
+ *  @code
+ *   Publisher:
+ *      CSpsBufferedPublisher::SetL( KCategory, KKey, data );
+ *   
+ *   Subscriber:
+ *      - start to fill buffer
+ *        iMember = CSpsBufferedPublisher::NewL( KCategory, KKey );
+ *        iMember->Start();
+ *        
+ *      - when changed data is read
+ *        RArray<TUint32> array;
+ *        iMember->GetL( array );
+ *        // Do something with data
+ *        array.Close();
+ *        
+ *  @endcode
+ *
+ *  @lib serviceprovidersettings.lib
+ */
+NONSHARABLE_CLASS( CSpsBufferedPublisher ): public CBase
+    {
+public: // Publisher methods
+    /**
+     * ?description
+     *
+     * @param aCategory P&S Category
+     * @param aKey P&S key
+     * @param aData Data to be published
+     */
+    static void SetL( TUid aCategory, TUint aKey, TUint32 aData );
+    
+public: // Subscriber methods
+
+    /**
+     * Creates P&S key if not yet created.
+     * 
+     * Two-phased constructor.
+     * @param aCategory P&S Category
+     * @param aKey P&S key
+     */
+    static CSpsBufferedPublisher* NewL( TUid aCategory, TUint aKey );
+
+    /**
+     * Destructor.
+     */
+    virtual ~CSpsBufferedPublisher();
+
+    /**
+     * Start logging of buffer changes
+     * Must be stopped before it can start from current position
+     */
+    void Start();
+    
+    /**
+     * Stop logging of buffer changes
+     */
+    void Stop();
+    
+    /**
+     * Get logged P&S data
+     * 
+     * @param aData Changed data since last get
+     * @leave KErrNotReady if not started
+     */
+    void GetL( RArray<TUint32>& aData );
+
+private:
+    
+    CSpsBufferedPublisher( TUid aCategory, TUint aKey );
+
+    void ConstructL();
+
+private:
+
+    static void SignalAndCloseSemaphore( TAny* aPtr );
+    
+    static TUint32& At( TDes8& aData, TInt aIndex );
+    
+    static TUint Max( TDesC8& aData );
+    
+    static TInt32 Base( TDesC8& aData, TInt aIndex  );
+    
+    static TUint32& GlobalIndex( TDes8& aData );
+    
+private: // data
+    
+    TUid iCategory;
+    TUint iKey;
+    TInt iIndex;
+    
+    };
+
+
+#endif // C_CSPSBUFFEREDPUBLISHER_H