--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/multimediacommscontroller/mmccamrpayloadformat/inc/amrcommonutil.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,110 @@
+/*
+* Copyright (c) 2002-2006 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:    Common AMR codec data utilities
+*
+*/
+
+
+
+
+#ifndef AMRCOMMONUTIL_H
+#define AMRCOMMONUTIL_H
+
+//  INCLUDES
+#include <e32base.h>
+#include "AmrFrameInfo.h"
+
+// CLASS DECLARATION
+
+#ifdef _DEBUG 
+    #include <e32svr.h>
+    #define _DEBUG_AMR_CHECK_ELEMENT_RANGE
+#endif
+
+#ifdef _DEBUG_AMR_CHECK_ELEMENT_RANGE
+    #define _DEBUG_AMR_ELEMENT_RANGE_ERROR (a, b) \
+    	{ _LIT( KName, a); RDebug::Print(KName, b); }
+#else
+	#define _DEBUG_AMR_ELEMENT_RANGE_ERROR(a, b)
+#endif
+
+const TUint KNumValue0 = 0;
+const TUint KNumValue1 = 1;
+const TUint KNumValue2 = 2;
+const TUint KNumValue3 = 3;
+const TUint KNumValue4 = 4;
+const TUint KNumValue5 = 5;
+const TUint KNumValue8 = 8;
+const TUint KNumValue9 = 9;
+const TUint KNumValue10 = 10;
+const TUint KNumValue11 = 11;
+const TUint KNumValue100 = 100;
+const TUint KNumValue400 = 400;
+
+const TInt KBitIndex7 = 7;
+  
+
+/**
+* Common utility functions for AMR encoded data
+* 
+* @lib      Mccamrplformat.lib
+* @since    Series 60 3.0
+*/
+class CAmrCommonUtility : public CBase
+    {
+    public:
+        /**
+        * Calculates frame size and returns information about the frame.
+        * @since    Series 60 3.0
+        * @param    aBuf Contains frame to be examined at the beginning of the
+        *           buffer
+        * @param    aBufLen Length of the buffer
+        * @param    aInfo - [output] Frame info
+        * @param    aIsNb Is AMR narrow band?
+        * @return   TInt - 0 if frame bit syntax is incorrect
+        */
+        static TInt FrameInfo( const TUint8* aBuf, TInt aBufLen, 
+                TAmrFrameInfo& aInfo, TBool aIsNb );
+
+        /**
+        * Seeks the start position of the next frame and returns the byte
+        * position of frames header.
+        * @since    Series 60 3.0
+        * @param    aBuf Buffer which contains frames
+        * @param    aBufLen Length of the buffer
+        * @param    aIsNb Is AMR narrow band?
+        * @return   TInt - Byte position of the frames header or aBufLen, if no
+        *           valid frame can not be found.
+        */
+        static TInt SeekSync( const TUint8* aBuf, TInt aBufLen, TBool aIsNb );
+
+        /**
+        * Returns the size of frame described by given coding parameters.
+        * @since    Series 60 3.0
+        * @param    aInfo Frame info containing coding parameters
+        * @param    aIsNb Is AMR narrow band?
+        * @return   TInt - Size of the frame
+        */
+        static TInt FrameSize( const TAmrFrameInfo& aInfo, TBool aIsNb );
+        
+        /**
+        * Returns the size of one AMR frame header.
+        * @since    Series 60 3.0
+        * @return   TInt - Size of one AMR frame header in bytes
+        */
+        static TInt FrameHeaderSize( );
+    };
+
+#endif // MCCAMRCOMMONUTIL_H
+