--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/datasourcemodules/bluetoothgpspositioningmodule/btgpspsy/inc/Utils/BTGPSNmeaBuffer.h	Fri Jun 04 10:34:15 2010 +0100
@@ -0,0 +1,119 @@
+/*
+* Copyright (c) 2005-2009 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:
+*
+*/
+
+
+
+
+#ifndef BTGPSNMEABUFFER_H
+#define BTGPSNMEABUFFER_H
+
+//  INCLUDES
+
+#include <e32base.h>
+
+// CONSTANTS
+// Constants for NMEA buffer index, mean NMEA message
+// has not been received by the client;
+const TInt KBTGPSNmeaIndexNotSet = -1;
+
+
+// MACROS
+
+// DATA TYPES
+
+// FUNCTION PROTOTYPES
+
+// FORWARD DECLARATIONS
+
+// CLASS DECLARATION
+
+/**
+*  This class is used to send messages to connected BT device. 
+*  It doesn't garentee the message can be received from connected
+*  BT device. The message are buffered if necessary to prevent
+*  jams on BT connection.
+*  
+*/
+class CBTGPSNmeaBuffer: public CBase
+    {
+    public: 
+
+        /**
+        * Two-phase construction.
+        * @param aSize The size of NMEA buffer
+        */
+        static CBTGPSNmeaBuffer * NewL(TInt aSize);
+
+        /**
+        * Destructor
+        */
+        virtual ~CBTGPSNmeaBuffer();
+
+        /**
+        * Add NMEA sentences to buffer
+        */
+        void AddSentences(const TDesC8& aNmea);
+
+        /**
+        * Read NMEA sentences from buffer. 
+        * After the sentence is rturned, aBeginning
+        * is updated to the new position. When
+        * the reading reaches the end, aBeginning
+        * will be set as KBTGPSNmeaIndexNotSet.
+        * @return KErrNone if nmea sentences are successfully
+        * retrieved. Otherwise, the end of the buffer
+        * is met.
+        */
+        TInt ReadSentences(
+            TDes8& aDest, 
+            TInt& aBeginning) const;
+            
+        /**
+        * Return current index
+        */
+        TInt CurrentIndex() const;
+        
+        /**
+        * Reset the buffer
+        */
+        void ResetBuffer();
+        
+    private:
+
+        /**
+        * Second phase of the construction
+        */
+        void ConstructL(TInt aSize);
+
+        /**
+        * Private constructor
+        */
+        CBTGPSNmeaBuffer();
+        
+    private:
+        //NMEA buffer
+        TUint8* iBuffer;
+        
+        //Size of the buffer
+        TInt iSize;
+
+        //End of the FIFO buffer
+        TInt iBottom;
+    };
+#endif
+// End of File
+