--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmlibs/mmfw/Codecs/Src/MMFCodecCommon/MMFAudioSPcm16ToMuLawCodec.cpp	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,79 @@
+// Copyright (c) 2003-2009 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:
+//
+
+#include "MMFAudioSPcm16ToMuLawCodec.h"
+
+/***
+*
+* Convert
+*
+*/
+EXPORT_C void TMMFAudioSPcm16ToMuLawCodec::Convert(TUint8* aSrc, TUint8* aDst, TInt aSamples)
+	{
+	TInt pcm;
+	while (aSamples--)
+		{
+		pcm = (aSrc[0]+(aSrc[1]<<8));
+		*aDst++ = PcmSampleToMuLaw(STATIC_CAST(TInt16 , pcm));
+		aSrc+=2;
+		}
+	}
+
+//[ conversion look up table pcm16 to Mulaw ]
+const TInt8 TMMFAudioSPcm16ToMuLawCodec::KExpLut[] = 
+	{
+	0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
+	4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
+	5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+	5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+	6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+	6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+	6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+	6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
+	};
+
+/***
+*
+* PcmSampleToMulaw
+* @param Mulaw
+* @return TUint8
+*
+*/
+TUint8 TMMFAudioSPcm16ToMuLawCodec::PcmSampleToMuLaw(TInt aPcm)
+	{
+    TInt sign, exponent, mantissa;
+    TUint8 ulawbyte;
+
+    sign = (aPcm >> 8) & KMaskSign8bit;		
+    if ( sign != 0 )
+		aPcm = STATIC_CAST( TUint16,-aPcm);
+	if ( STATIC_CAST(TUint , aPcm) > STATIC_CAST(TUint , KMda16PcmToMulawClip ))
+		aPcm = KMda16PcmToMulawClip;	
+
+    aPcm = STATIC_CAST(TInt16 , aPcm + KMda16PcmToMulawBias);
+    exponent = KExpLut[( aPcm >> 7 ) & KAndMask8bit];
+    mantissa = ( aPcm >> ( exponent + 3 ) ) & 0x0F;
+    ulawbyte = STATIC_CAST( TUint8, ~ ( sign | ( exponent << 4 ) | mantissa ));
+
+    return ulawbyte;
+	}