diff -r 000000000000 -r bde4ae8d615e os/mm/mmlibs/mmfw/tsrc/mmfunittest/SwCodecDevices/TSU_MMF_SWCODECDEVICES.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/mmlibs/mmfw/tsrc/mmfunittest/SwCodecDevices/TSU_MMF_SWCODECDEVICES.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,2145 @@
+// 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:
+//
+
+// EPOC includes
+#include <e32base.h>
+#include <e32math.h>
+#include "types.h"
+#include "gsm610fr.h"
+#include "MMFAudioCodecBase.h"
+
+// Test system includes
+#include "TSU_MMF_SWCODECDEVICES.h"
+#include "TSU_MMF_SwCodecDevices_BufferSizes.h"
+#include "TSU_MMF_DeviceSuite.h"
+#include "MMFAudioSPcm16ToALawCodec.h"
+#include "MMFAudioALawToS16PcmCodec.h"
+#include "MMFAudioMuLawToS16PcmCodec.h"
+#include "MMFAudioSPcm16ToMuLawCodec.h"
+#include "mmfpcm16ToImaAdpcm.h"
+#include "MmfImaAdpcmtopcm16hwdevice.h"
+#include "GSM610.H"
+
+/**
+*
+* CTestStep_MMF_SwCodecDevices
+*
+**/
+CTestStep_MMF_SwCodecDevices::CTestStep_MMF_SwCodecDevices()
+	{
+	iHeapSize = 300000;
+	}
+
+/**
+*
+* ~CTestStep_MMF_SwCodecDevices
+*
+*/
+CTestStep_MMF_SwCodecDevices::~CTestStep_MMF_SwCodecDevices()
+	{
+	}
+
+/**
+*
+* SetSuite
+* @param aPtr ref to the test suite
+*
+**/
+void CTestStep_MMF_SwCodecDevices::SetSuite( CTestSuite_MMF_SwCodecDevices* aPtr )
+	{
+	iRefSuite = aPtr;
+	}
+/**
+*
+* GetSuite 
+* @return CTestSuite_MMF_SwCodecDevices*
+*
+**/
+CTestSuite_MMF_SwCodecDevices* CTestStep_MMF_SwCodecDevices::GetSuite()
+	{
+	return iRefSuite;
+	}
+/**
+*
+* CTest_MMF_Gsm610
+*
+*/
+CTest_MMF_Gsm610::CTest_MMF_Gsm610()
+	{
+
+	}
+
+/**
+*
+* CTest_MMF_SwCodecDevices_U_0001
+*
+*/
+CTest_MMF_SwCodecDevices_U_0001::CTest_MMF_SwCodecDevices_U_0001()
+		{
+		// store the name of this test case
+		// this is the name that is used by the script file
+		iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0001-HP");
+		}
+
+/**
+*
+* CTest_MMF_SwCodecDevices_U_0001
+*
+**/
+CTest_MMF_SwCodecDevices_U_0001::~CTest_MMF_SwCodecDevices_U_0001()
+		{
+
+		}
+/**
+*
+*
+* ~CTest_MMF_Gsm610
+*
+*/
+CTest_MMF_Gsm610::~CTest_MMF_Gsm610()
+	{
+     // nothing to do ..
+	}
+
+/**
+*
+*
+* DoTestStepL
+*
+*/
+TVerdict CTest_MMF_SwCodecDevices_U_0001::DoTestStepL()
+	{
+	__MM_HEAP_MARK;
+	TVerdict result = EPass ;
+	
+	CMmfGsm610ToPcm16HwDevice* pDecoder = CMmfGsm610ToPcm16HwDevice::NewL();
+	CleanupStack::PushL(pDecoder);
+	   
+	// do the same for the inverse operation
+	CMmfPcm16ToGsm610HwDevice* pEncoder = CMmfPcm16ToGsm610HwDevice::NewL();
+	CleanupStack::PushL(pEncoder);
+	CMMFSwCodec& theEncode = pEncoder->Codec();
+	
+	//[ create buffers of the appropriate size ]
+	const TInt srcBufferSize   = theEncode.SourceBufferSize();
+	const TInt sinkBufferSize  = theEncode.SinkBufferSize();
+	const TInt codedBufferSize = 76*4* KNumFramesInABuffer; // number of coded buffers * size of coded buffer 63*2 
+	iNumCodedFrames =  KNumFramesInABuffer;                                //XXX claculate these constants soon <GK>
+	
+	iScratchData    = CMMFDescriptorBuffer::NewL( codedBufferSize);
+
+	//[ pcm data buffers ]
+	iRefSrcData     = CMMFDescriptorBuffer::NewL( srcBufferSize );      
+	iDecodedData    = CMMFDescriptorBuffer::NewL( srcBufferSize ); 
+
+	//[ coded data buffers ]
+	iRefCodedData   = CMMFDescriptorBuffer::NewL( sinkBufferSize );  
+	iRefDecodedData = CMMFDescriptorBuffer::NewL( sinkBufferSize );
+	iCodedData      = CMMFDescriptorBuffer::NewL( sinkBufferSize );
+	
+	//[ for now process only the first few buffers 
+	// and encode the data]
+	INFO_PRINTF1(_L("Encoding Frame..."));
+	TInt srcFileSize = 0;
+	iSrcFile.Size( srcFileSize);
+	TInt buffLen =iRefSrcData->Data().MaxLength();
+	TInt numBuffers = srcFileSize/buffLen;
+	if( numBuffers > 4 )  // [ not all buffers are processed without error
+		// and this is the intention probably of the test sequences]
+		numBuffers = 4;  
+	TInt badBufferCount = 0;
+	TInt goodBufferCount = 0;
+	
+	for( TInt bufferCount = 0; bufferCount < numBuffers; bufferCount++ )
+		{
+		//[precondition pointers are ok]
+		ReadDataBufferL(iSrcFile, *iRefSrcData );
+		
+		ParseCodedDataL(iRefCodedData);
+		
+		CMMFSwCodec::TCodecProcessResult encodeRes = theEncode.ProcessL( *iRefSrcData, *iCodedData );
+		if( encodeRes !=  CMMFSwCodec::TCodecProcessResult::EProcessComplete  )
+			{
+			INFO_PRINTF1( _L("Error Failed to complete coding") );
+			return EFail;               
+			}
+		
+		//[ compare results ]
+		if( !CompareEncodeResults( iCodedData, iRefCodedData ) )
+			{
+			result = EFail;
+			badBufferCount++;
+			}
+		else
+			{
+			goodBufferCount++;
+			}
+			
+		}
+
+	 	//[ log number of good buffers & number of bad buffers ]
+	INFO_PRINTF4(_L("Good Buffers %d, Bad Buffers %d, Total Buffers %d"), 
+		goodBufferCount, badBufferCount, badBufferCount+goodBufferCount );
+
+	 //[pop data from the cleanup stack ]
+	 CleanupStack::PopAndDestroy(2, pDecoder); //pDecoder, theCodec
+
+	 delete iRefSrcData;     // reference source data
+	 iRefSrcData = NULL;
+	 delete iRefCodedData;   //reference coded data
+	 iRefCodedData = NULL;
+	 delete iRefDecodedData; // reference decoded data
+	 iRefDecodedData = NULL;
+	 delete iCodedData;      // buffer of coded data
+	 iCodedData = NULL;
+	 delete iDecodedData;    // buffer of actual decoded data
+	 iDecodedData = NULL;
+	 delete iScratchData;    // scratch data buffer
+	 iScratchData = NULL;
+
+	__MM_HEAP_MARKEND;
+	  
+    return result;
+	}
+
+/**
+*
+* ParseCodedDataL
+*
+*/
+void  CTest_MMF_Gsm610::ParseCodedDataL( CMMFDataBuffer* aBuffer )
+	{
+   	codes frame0;
+	codes frame1;
+
+	//[ read all the coded data into the scratch buffer from reference file ]
+	ReadDataBufferL( iCodedFile, *iScratchData ); 
+	TUint8* dest = const_cast<TUint8*>(aBuffer->Data().Ptr());
+	TUint8* src  = const_cast<TUint8*>(iScratchData->Data().Ptr());
+
+	//[ for all the coded frames parse these frames to proper coded form ]
+	for( TInt count = 0; count < iNumCodedFrames; count++ )
+		{
+		// parse data to frame
+		ParseFrameL( frame0, src );
+		ParseFrameL( frame1, src );		
+		//[ finally pack the two frames into the coded data buffer ]
+		PackFrame0( &frame0, reinterpret_cast<TInt8*>(dest) );
+		PackFrame1( &frame1, reinterpret_cast<TInt8*>(dest) );
+		dest+= KGsmFrameSize;
+		}
+	
+	  aBuffer->Data().SetLength(KGsmFrameSize*iNumCodedFrames);
+	}
+/**
+*
+* ParseFrame
+* @param aFrame this stores the gsm frame in an unpacked structure
+* @param aBuffer this contains the reference file data as 76 words
+*
+*/
+void CTest_MMF_Gsm610::ParseFrameL( struct codes& aFrame, TUint8* &aSrc )
+	{
+	for(TInt i = 0; i < 8; i++ )
+		{
+		aFrame.LARc[i]  = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
+		aFrame.LARc[i] |= static_cast<TInt16>(*aSrc++ << 8 );
+		}
+	
+	for( TInt j = 0; j < 4; j++ )
+		{ 
+		aFrame.sfc[j].Nc  = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
+		aFrame.sfc[j].Nc |= static_cast<TInt16>(*aSrc++ << 8 );
+		aFrame.sfc[j].bc  = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
+		aFrame.sfc[j].bc |= static_cast<TInt16>(*aSrc++ << 8 );
+		aFrame.sfc[j].Mc  = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
+		aFrame.sfc[j].Mc |= static_cast<TInt16>(*aSrc++ << 8 );
+		aFrame.sfc[j].xmaxc  = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
+		aFrame.sfc[j].xmaxc |= static_cast<TInt16>(*aSrc++ << 8 );
+		
+		for( TInt k = 0; k < 13; k++ )
+			{
+			aFrame.sfc[j].xMc[k]  = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
+			aFrame.sfc[j].xMc[k] |= static_cast<TInt16>(*aSrc++ << 8 );
+			}
+		
+		}
+	
+	}
+ 
+/**
+*
+* DoTestStepPreambleL
+*
+*/
+enum TVerdict CTest_MMF_SwCodecDevices_U_0001::DoTestStepPreambleL(void)
+	{
+	TVerdict result = EPass;
+    //[ connect to the file server ]
+	User::LeaveIfError( iFs.Connect());
+
+	//[ read the ref source data ]
+	if(!GetStringFromConfig(_L("SectionOne"), _L("SourceData01"), iSourceDataFile) ||
+	   !GetStringFromConfig(_L("SectionOne"), _L("CodedData01"), iCodedDataFile) ||
+	   !GetStringFromConfig(_L("SectionOne"), _L("DecodedData01"), iDecodedDataFile) )
+		{
+		return EInconclusive;
+		}
+
+	//[ open the data files]
+	OpenFileL(iSrcFile,iSourceDataFile );
+	OpenFileL(iCodedFile,iCodedDataFile );
+	OpenFileL(iDecodeFile,iDecodedDataFile);
+	return result;
+	}
+
+/**
+*
+* CompareCodedResults
+* @param aEncodedFrame
+* @param aRefFrame
+* @result TBool
+*
+*/
+TBool CTest_MMF_Gsm610::CompareEncodeResults( CMMFDataBuffer* aEncoded, CMMFDataBuffer* aRefFrame )
+	{
+    TBool result = ETrue;
+	
+	//[precondition no encoded frames == refframes ]
+	__ASSERT_DEBUG(aEncoded,Panic(EBadArgument));
+	__ASSERT_DEBUG(aRefFrame,Panic(EBadArgument));
+
+	TInt upperLimit = aEncoded->Data().Length()/KGsmFrameSize;
+
+	const CMMFDataBuffer* encoded = STATIC_CAST(const CMMFDataBuffer*, aEncoded);
+	const CMMFDataBuffer* reference = STATIC_CAST(CMMFDataBuffer*, aRefFrame);
+
+	TUint8* pFrames    = CONST_CAST(TUint8*,encoded->Data().Ptr());
+	TUint8* pRefFrames = CONST_CAST(TUint8*,reference->Data().Ptr());
+
+	TInt badFrameCount = 0;
+	TInt goodFrameCount = 0;
+
+    //[ for all frames ]
+    for( TInt index = 0; index < upperLimit; index++ )
+		{
+	 //[ compare src and ref frame]
+	   if( !CompareGsm610Frames( pFrames, pRefFrames ))
+		   {
+		   result = EFalse;
+		   badFrameCount++;
+		   INFO_PRINTF2(_L("Bad Frame Number: %d"), index );
+		   }
+	   else{
+		   goodFrameCount++;
+		   }
+
+	    //[ increment frame pointers by size of gsmencoded frame  
+	    pFrames    += KGsmFrameSize;
+		pRefFrames += KGsmFrameSize;
+		}
+
+		 	//[ log number of good frames & number of bad frames ]
+	INFO_PRINTF4(_L("Good Frames %d, Bad Frames %d, Total Frames %d"), 
+		goodFrameCount, badFrameCount, badFrameCount+goodFrameCount );
+
+	 return result ;
+	}
+
+/**
+*
+* CompareGsm610Frames
+* This function compares two encoded gsm610 frames
+* @result TBool Frames are the same or different
+*
+**/
+TBool CTest_MMF_Gsm610::CompareGsm610Frames( TUint8* aGsmFrame,TUint8* aRefGsmFrame )
+	{
+	 TBool result = ETrue;
+	 ASSERT( aGsmFrame );
+	 __ASSERT_DEBUG(aGsmFrame,Panic(EBadArgument));
+	 __ASSERT_DEBUG(aRefGsmFrame,Panic(EBadArgument));
+	 
+	 codes codeBuf0;
+	 codes codeBuf1;
+	 codes refCodeBuf0;
+	 codes refCodeBuf1; 
+
+	 UnpackFrame0(&codeBuf0, aGsmFrame );
+	 UnpackFrame1(&codeBuf1, aGsmFrame );
+	 UnpackFrame0(&refCodeBuf0, aRefGsmFrame );
+	 UnpackFrame1(&refCodeBuf1, aRefGsmFrame );
+    
+	if( !Compare( codeBuf0, refCodeBuf0 ) ||
+		!Compare( codeBuf1, refCodeBuf1) )
+
+		{
+		 //LogGsmFrames( codeBuf0, refCodeBuf0 ); // add for debug reasons
+		 //LogGsmFrames( codeBuf1, refCodeBuf1 ); // add for debugging reasons
+		result = EFalse;
+		}
+
+	 return result ;
+	}
+
+/**
+*
+* LogGsmFrames
+* @param aGsmFrame
+* @param aRefGsmFrame 
+*
+**/
+void  CTest_MMF_Gsm610::LogGsmFrames( codes& aGsmFrame, codes& aRefGsmFrame )
+	{
+    //[ print the quantized lar coefficients ]
+   	INFO_PRINTF1(_L("Coded Frame:")); 
+	LogGsmFrame( aGsmFrame );
+	INFO_PRINTF1(_L("Reference Frame:")); 
+	LogGsmFrame( aRefGsmFrame );
+	}
+
+/**
+*
+* LogGsmFrame
+* prints a GsmFrame to the test log
+* @param aFrame 
+*
+**/
+void  CTest_MMF_Gsm610::LogGsmFrame ( codes& aFrame )
+	{
+	INFO_PRINTF2(_L("LARc[0] = %d"), aFrame.LARc[0]); 
+	INFO_PRINTF2(_L("LARc[1] = %d"), aFrame.LARc[1]);
+	INFO_PRINTF2(_L("LARc[2] = %d"), aFrame.LARc[2]);
+	INFO_PRINTF2(_L("LARc[3] = %d"), aFrame.LARc[3]);
+	INFO_PRINTF2(_L("LARc[4] = %d"), aFrame.LARc[4]); 
+	INFO_PRINTF2(_L("LARc[5] = %d"), aFrame.LARc[5]);
+	INFO_PRINTF2(_L("LARc[6] = %d"), aFrame.LARc[6]);
+	INFO_PRINTF2(_L("LARc[7] = %d"), aFrame.LARc[7]);
+
+	//[ for each sub frame print its data ]
+	for( TInt i = 0; i < 4; i++ )
+		{
+         INFO_PRINTF2(_L("Nc = %d"), aFrame.sfc[i].Nc); 
+		 INFO_PRINTF2(_L("bc = %d"), aFrame.sfc[i].bc);
+		 INFO_PRINTF2(_L("Mc= %d"), aFrame.sfc[i].Mc);
+		 INFO_PRINTF2(_L("xmaxc = %d"), aFrame.sfc[i].xmaxc);
+		 INFO_PRINTF2(_L("xMc[0] = %d"), aFrame.sfc[i].xMc[0]);
+		 INFO_PRINTF2(_L("xMc[1] = %d"), aFrame.sfc[i].xMc[1]);
+		 INFO_PRINTF2(_L("xMc[2] = %d"), aFrame.sfc[i].xMc[2]);
+		 INFO_PRINTF2(_L("xMc[3] = %d"), aFrame.sfc[i].xMc[3]);
+		 INFO_PRINTF2(_L("xMc[4] = %d"), aFrame.sfc[i].xMc[4]);
+		 INFO_PRINTF2(_L("xMc[5] = %d"), aFrame.sfc[i].xMc[5]);
+		 INFO_PRINTF2(_L("xMc[6] = %d"), aFrame.sfc[i].xMc[6]);
+		 INFO_PRINTF2(_L("xMc[7] = %d"), aFrame.sfc[i].xMc[7]);
+		 INFO_PRINTF2(_L("xMc[8] = %d"), aFrame.sfc[i].xMc[8]);
+		 INFO_PRINTF2(_L("xMc[9] = %d"), aFrame.sfc[i].xMc[9]);
+		 INFO_PRINTF2(_L("xMc[10] = %d"), aFrame.sfc[i].xMc[10]);
+		 INFO_PRINTF2(_L("xMc[11] = %d"), aFrame.sfc[i].xMc[11]);
+		 INFO_PRINTF2(_L("xMc[12] = %d"), aFrame.sfc[i].xMc[12]);
+		}
+	}
+
+/**
+*
+* Compare
+*
+**/
+TBool CTest_MMF_Gsm610::Compare( codes& aFrame1, codes& aFrame2 )
+	{
+     TBool result = ETrue;
+     
+	if( (aFrame1.LARc[0] != aFrame2.LARc[0] ) ||
+	    (aFrame1.LARc[1] != aFrame2.LARc[1] ) ||
+	    (aFrame1.LARc[2] != aFrame2.LARc[2] ) ||
+	    (aFrame1.LARc[3] != aFrame2.LARc[3] ) ||
+	    (aFrame1.LARc[4] != aFrame2.LARc[4] ) ||
+	    (aFrame1.LARc[5] != aFrame2.LARc[5] ) ||
+	    (aFrame1.LARc[6] != aFrame2.LARc[6] ) ||
+	    (aFrame1.LARc[7] != aFrame2.LARc[7] ) )
+		{
+		result = EFalse;
+		}
+
+	for( TInt i = 0; i < 4; i++ )
+		{
+		if( 
+         (aFrame1.sfc[i].Nc !=  aFrame2.sfc[i].Nc) ||
+		 (aFrame1.sfc[i].bc !=  aFrame2.sfc[i].bc) ||
+		 (aFrame1.sfc[i].Mc !=  aFrame2.sfc[i].Mc) ||
+		 (aFrame1.sfc[i].xmaxc !=	 aFrame2.sfc[i].xmaxc) ||
+		 (aFrame1.sfc[i].xMc[0] != aFrame2.sfc[i].xMc[0]) ||
+		 (aFrame1.sfc[i].xMc[1] !=	aFrame2.sfc[i].xMc[1]) ||
+		 (aFrame1.sfc[i].xMc[2] !=	aFrame2.sfc[i].xMc[2]) ||
+		 (aFrame1.sfc[i].xMc[3] !=	aFrame2.sfc[i].xMc[3]) ||
+		 (aFrame1.sfc[i].xMc[4] !=	aFrame2.sfc[i].xMc[4]) ||
+		 (aFrame1.sfc[i].xMc[5] !=	aFrame2.sfc[i].xMc[5]) ||
+		 (aFrame1.sfc[i].xMc[6] !=	aFrame2.sfc[i].xMc[6]) ||
+		 (aFrame1.sfc[i].xMc[7] !=	aFrame2.sfc[i].xMc[7]) ||
+		 (aFrame1.sfc[i].xMc[8] !=	aFrame2.sfc[i].xMc[8]) ||
+		 (aFrame1.sfc[i].xMc[9] !=	aFrame2.sfc[i].xMc[9]) ||
+		 (aFrame1.sfc[i].xMc[10] !=	aFrame2.sfc[i].xMc[10]) ||
+		 (aFrame1.sfc[i].xMc[11] !=	aFrame2.sfc[i].xMc[11]) ||
+		 (aFrame1.sfc[i].xMc[12] !=	aFrame2.sfc[i].xMc[12]))
+			{
+			result = EFail;
+			}
+		}
+
+	 return result;
+	}
+
+/**
+*
+* CompareCodedResults
+*
+*/
+TBool CTest_MMF_Gsm610::CompareDecodeResults(CMMFDataBuffer* aEncoded, CMMFDataBuffer* aRefFrame )
+	{
+    TBool result = ETrue;
+	
+    //[ precondition the buffers are of the same length ]
+	__ASSERT_DEBUG(aEncoded,Panic(EBadArgument));
+	__ASSERT_DEBUG(aRefFrame,Panic(EBadArgument));
+	__ASSERT_DEBUG(aEncoded->Data().MaxLength() == aRefFrame->Data().MaxLength(),Panic(EBadArgument));
+	
+	TUint8 *pResults = CONST_CAST(TUint8*,aEncoded->Data().Ptr());  
+	TUint8 *pRefData = CONST_CAST(TUint8*,aRefFrame->Data().Ptr());
+	TInt numResults  = aEncoded->Data().MaxLength(); 
+
+    if (Mem::Compare( pResults,numResults,pRefData,numResults)!=0)
+        {
+		result = EFalse;
+		}
+  
+    return result ;
+	}
+/**
+*
+* ReadDataL
+* Reads entire data file into buffer 
+*
+**/
+void CTest_MMF_Gsm610::ReadDataL( CMMFDataBuffer*& aBuffer, const TDesC& aFile1 )
+	{
+	TFileName fileName = GetSuite()->DefaultPath();
+	fileName.Append(aFile1);
+
+	RFile file1;
+	User::LeaveIfError(file1.Open(iFs, fileName, EFileShareAny | EFileStream | EFileRead));
+	CleanupClosePushL(file1);
+	TInt fileSize = 0;
+	User::LeaveIfError(file1.Size(fileSize));
+	aBuffer = CMMFDescriptorBuffer::NewL(fileSize);
+	User::LeaveIfError(file1.Read( aBuffer->Data(),fileSize));
+	CleanupStack::PopAndDestroy(1); //file1
+	}
+
+/**
+*
+* OpenFileL
+* @param aFile
+* @param aFileName
+*
+**/
+void CTest_MMF_Gsm610::OpenFileL( RFile& aFile, const TDesC& aFileName )
+	{
+	User::LeaveIfError(aFile.Open(iFs, aFileName, EFileShareAny | EFileStream | EFileRead));
+	}
+
+/**
+*
+* CloseFileL
+* @param aFile
+*
+**/
+void CTest_MMF_Gsm610::CloseFileL( RFile& aFile )
+	{
+	aFile.Close();
+	}
+
+/**
+*
+* ReadDataBuffer
+* @param aFile
+* assumes file reads sufficient data
+*
+**/
+void CTest_MMF_Gsm610::ReadDataBufferL( const RFile& aFile, CMMFDataBuffer& aBuffer )
+	{
+	//[ The read will set the length of the descriptor to the number of bytes read]
+	User::LeaveIfError(aFile.Read( aBuffer.Data(),aBuffer.Data().MaxLength() ));
+	INFO_PRINTF2(_L("Bytes read = %d"), aBuffer.Data().Length() );
+   	}
+
+/**
+*
+* FillPcmBuffer
+* @param aSrcBuffer
+* Fill a buffer with a sine wave
+*
+**/
+void CTest_MMF_Gsm610::FillPcmBuffer( CMMFDataBuffer& aSrcBuffer )
+	{
+	//fill the Src Buffer
+	 TUint8* pDst = CONST_CAST(TUint8*,aSrcBuffer.Data().Ptr());
+	 TInt length =  aSrcBuffer.Data().MaxLength();
+
+	 //[encode the data]
+	 TInt16 srcValue = 0;
+	 TReal val   = 0.0;
+	 TReal theta = 0.0; 
+	 for(TInt i=0; i<length/2; i++)
+		 {
+		 //[ assign data and place in buffer]
+		  theta = KPi*i/5; // fundamental of 800hz sampled @8khz has 20 db or
+		                      // better reproduction through gsm codec
+		  User::LeaveIfError(Math::Sin(val,theta));
+          srcValue = static_cast<TInt16>( 1000 * val );
+	      *pDst++ = static_cast<TUint8>( srcValue & KAndMask8bit);
+		  *pDst++ = static_cast<TUint8>((srcValue >> 8) & KAndMask8bit );
+		  //INFO_PRINTF2(_L("Sine = %d"), srcValue );  //uncomment for debugging purposes     
+		 }
+    
+	 aSrcBuffer.Data().SetLength(length);
+
+	}
+
+/**
+*
+* DoTestStepPostambleL
+* @result TVerdict
+* 
+*/
+TVerdict CTest_MMF_SwCodecDevices_U_0001::DoTestStepPostambleL(void)
+	{
+	// close files
+	CloseFileL( iSrcFile );
+	CloseFileL( iCodedFile );
+	CloseFileL( iDecodeFile );
+    //[ clean up the buffers etc ]
+	delete iRefSrcData;     // reference source data
+	delete iRefCodedData;   //reference coded data
+	delete iRefDecodedData; // reference decoded data
+	delete iCodedData;      // buffer of coded data
+	delete iDecodedData;    // buffer of actual decoded data
+	delete iScratchData;    // scratch data buffer
+	return EPass;
+	}
+
+/**
+*
+* UnpackFrame0
+* @param aCodeBuf 
+* @param pbuf
+*
+**/
+void CTest_MMF_Gsm610::UnpackFrame0(codes* aCodeBuf,  TUint8* pbuf)
+    {
+    TInt16* LAR = aCodeBuf->LARc;
+
+    // unpack the LAR[0..7] from the first 4.5 bytes
+    LAR[0] = (TInt16)((pbuf[0] & 0x3F));
+    LAR[1] = (TInt16)(((pbuf[0] & 0xC0) >> 6) | ((pbuf[1] & 0x0F) << 2));
+    LAR[2] = (TInt16)(((pbuf[1] & 0xF0) >> 4) | ((pbuf[2] & 0x01) << 4));
+    LAR[3] = (TInt16)(((pbuf[2] & 0x3E) >> 1));
+    LAR[4] = (TInt16)(((pbuf[2] & 0xC0) >> 6) | ((pbuf[3] & 0x03) << 2));
+    LAR[5] = (TInt16)(((pbuf[3] & 0x3C) >> 2));
+    LAR[6] = (TInt16)(((pbuf[3] & 0xC0) >> 6) | ((pbuf[4] & 0x01) << 2));
+    LAR[7] = (TInt16)(((pbuf[4] & 0x0E) >> 1));
+
+    // unpack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
+    for(TInt i = 0; i < 4; i++)
+        {
+        struct sfcodes& c = aCodeBuf->sfc[i];
+#define sfb(x) (pbuf[4+i*7+x])
+        c.Nc = (TInt16)(((sfb(0) & 0xF0) >> 4) | ((sfb(1) & 0x07) << 4));
+        c.bc = (TInt16)(((sfb(1) & 0x18) >> 3));
+        c.Mc = (TInt16)(((sfb(1) & 0x60) >> 5));
+        c.xmaxc = (TInt16)(((sfb(1) & 0x80) >> 7) | ((sfb(2) & 0x1F) << 1));
+        c.xMc[0] = (TInt16)(((sfb(2) & 0xE0) >> 5));
+        c.xMc[1] = (TInt16)((sfb(3) & 0x07));
+        c.xMc[2] = (TInt16)(((sfb(3) & 0x3C) >> 3));
+        c.xMc[3] = (TInt16)(((sfb(3) & 0xC0) >> 6) | ((sfb(4) & 0x01) << 2));
+        c.xMc[4] = (TInt16)(((sfb(4) & 0x0E) >> 1));
+        c.xMc[5] = (TInt16)(((sfb(4) & 0x70) >> 4));
+        c.xMc[6] = (TInt16)(((sfb(4) & 0x80) >> 7) | ((sfb(5) & 0x03) << 1));
+        c.xMc[7] = (TInt16)(((sfb(5) & 0x1C) >> 2));
+        c.xMc[8] = (TInt16)(((sfb(5) & 0xE0) >> 5));
+        c.xMc[9] = (TInt16)((sfb(6) & 0x07));
+        c.xMc[10] = (TInt16)(((sfb(6) & 0x38) >> 3));
+        c.xMc[11] = (TInt16)(((sfb(6) & 0xC0) >> 6) | ((sfb(7) & 0x01) << 2));
+        c.xMc[12] = (TInt16)(((sfb(7) & 0x0E) >> 1));
+#undef sfb
+        }
+    }
+
+/**
+*
+* UnpackFrame1
+* @param aCodeBuf 
+* @param pbuf
+*
+**/
+void CTest_MMF_Gsm610::UnpackFrame1(struct codes* aCodeBuf, TUint8* pbuf)
+{
+    TInt16* LAR = aCodeBuf->LARc;
+
+    // unpack the LAR[0..7] from the first 4.5 bytes
+    LAR[0] = (TInt16)(((pbuf[32] & 0xF0) >> 4) | ((pbuf[33] & 0x03) << 4));
+    LAR[1] = (TInt16)(((pbuf[33] & 0xFC) >> 2));
+    LAR[2] = (TInt16)(((pbuf[34] & 0x1F)));
+    LAR[3] = (TInt16)(((pbuf[34] & 0xE0) >> 5) | ((pbuf[35] & 0x03) << 3));
+    LAR[4] = (TInt16)(((pbuf[35] & 0x3C) >> 2));
+    LAR[5] = (TInt16)(((pbuf[35] & 0xC0) >> 6) | ((pbuf[36] & 0x03) << 2));
+    LAR[6] = (TInt16)(((pbuf[36] & 0x1C) >> 2));
+    LAR[7] = (TInt16)(((pbuf[36] & 0xE0) >> 5));
+
+    // unpack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
+    for(TInt i = 0; i < 4; i++)
+        {
+        struct sfcodes& c = aCodeBuf->sfc[i];
+#define sfb(x) (pbuf[37+i*7+x])
+        c.Nc = (TInt16)(sfb(0) & 0x7F);
+        c.bc = (TInt16)(((sfb(0) & 0x80) >> 7) | ((sfb(1) & 0x01) << 1));
+        c.Mc = (TInt16)(((sfb(1) & 0x06) >> 1));
+        c.xmaxc = (TInt16)(((sfb(1) & 0xF8) >> 3) | ((sfb(2) & 0x01) << 5));
+        c.xMc[0] = (TInt16)(((sfb(2) & 0x0E) >> 1));
+        c.xMc[1] = (TInt16)(((sfb(2) & 0x70) >> 4));
+        c.xMc[2] = (TInt16)(((sfb(2) & 0x80) >> 7) | ((sfb(3) & 0x03) << 1));
+        c.xMc[3] = (TInt16)(((sfb(3) & 0x1C) >> 2));
+        c.xMc[4] = (TInt16)(((sfb(3) & 0xE0) >> 5));
+        c.xMc[5] = (TInt16)(((sfb(4) & 0x07)));
+        c.xMc[6] = (TInt16)(((sfb(4) & 0x38) >> 3));
+        c.xMc[7] = (TInt16)(((sfb(4) & 0xC0) >> 6) | ((sfb(5) & 0x01) << 2));
+        c.xMc[8] = (TInt16)(((sfb(5) & 0x0E) >> 1));
+        c.xMc[9] = (TInt16)(((sfb(5) & 0x70) >> 4));
+        c.xMc[10] = (TInt16)(((sfb(5) & 0x80) >> 7) | ((sfb(6) & 0x03) << 1));
+        c.xMc[11] = (TInt16)(((sfb(6) & 0x1C) >> 2));
+        c.xMc[12] = (TInt16)(((sfb(6) & 0xE0) >> 5));
+
+#undef sfb
+        }
+    }
+
+/**
+*
+* PackFrame0 
+* Pack the codewords of the even frame into pack buffer.
+* Packing as in MS gsm610 encoder.
+* @param aCodeBuf  Code words for one speech frame.
+* @param pbuf the output buffer
+*
+**/
+void CTest_MMF_Gsm610::PackFrame0(struct codes* aCodeBuf, TInt8* pbuf)
+    {
+    TInt16* LAR = aCodeBuf->LARc;
+    
+    // pack the LARc[0..7] into the first 4.5 bytes
+    *pbuf++ = (TUint8)(((LAR[0]     ) & 0x3F) | ((LAR[1] << 6) & 0xC0));
+    *pbuf++ = (TUint8)(((LAR[1] >> 2) & 0x0F) | ((LAR[2] << 4) & 0xF0));
+    *pbuf++ = (TUint8)(((LAR[2] >> 4) & 0x01) | ((LAR[3] << 1) & 0x3E) | ((LAR[4] << 6) & 0xC0));
+    *pbuf++ = (TUint8)(((LAR[4] >> 2) & 0x03) | ((LAR[5] << 2) & 0x3C) | ((LAR[6] << 6) & 0xC0));
+    *pbuf   = (TUint8)(((LAR[6] >> 2) & 0x01) | ((LAR[7] << 1) & 0x0E));
+    
+    // pack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
+    for(TInt i = 0; i < 4; i++)
+        {
+        struct sfcodes& c = aCodeBuf->sfc[i];
+        *pbuf++ |= ((c.Nc << 4) & 0xF0);
+        *pbuf++ = (TUint8)(((c.Nc >> 4) & 0x07) | ((c.bc << 3) & 0x18) | ((c.Mc << 5) & 0x60) | ((c.xmaxc << 7) & 0x80));
+        *pbuf++ = (TUint8)(((c.xmaxc >> 1) & 0x1F) | ((c.xMc[0] << 5) & 0xE0));
+        *pbuf++ = (TUint8)((c.xMc[1] & 0x07) | ((c.xMc[2] << 3) & 0x38) | ((c.xMc[3] << 6) & 0xC0));
+        *pbuf++ = (TUint8)(((c.xMc[3] >> 2) & 0x01) | ((c.xMc[4] << 1) & 0x0E) | ((c.xMc[5] << 4) & 0x70) | ((c.xMc[6] << 7) & 0x80));
+        *pbuf++ = (TUint8)(((c.xMc[6] >> 1) & 0x03) | ((c.xMc[7] << 2) & 0x1C) | ((c.xMc[8] << 5) & 0xE0));
+        *pbuf++ = (TUint8)((c.xMc[9] & 0x07) | ((c.xMc[10] << 3) & 0x38) | ((c.xMc[11] << 6) & 0xC0));
+        *pbuf   = (TUint8)(((c.xMc[11] >> 2) & 0x01) | ((c.xMc[12] << 1) & 0x0E));
+        }
+    }
+
+/**
+*
+* PackFrame1 
+* Pack the codewords of the even frame into pack buffer.
+* Packing as in MS gsm610 encoder.
+* @param aCodeBuf  Code words for one speech frame.
+* @param pbuf the output buffer
+*
+**/
+void CTest_MMF_Gsm610::PackFrame1(struct codes* aCodeBuf, TInt8* pbuf)
+    {
+    TInt16* LAR = aCodeBuf->LARc;
+    
+	pbuf += (PACKSIZE / 2);
+
+    // pack the LARc[0..7] into the first 4.5 bytes, starting with the msb of the first byte
+    *pbuf++ = (TUint8) (pbuf[0] | ((LAR[0] << 4) & 0xF0));
+    *pbuf++ = (TUint8)(((LAR[0] >> 4) & 0x03) | ((LAR[1] << 2) & 0xFC));
+    *pbuf++ = (TUint8)(((LAR[2]     ) & 0x1F) | ((LAR[3] << 5) & 0xE0));
+    *pbuf++ = (TUint8)(((LAR[3] >> 3) & 0x03) | ((LAR[4] << 2) & 0x3C) | ((LAR[5] << 6) & 0xC0));
+    *pbuf++ = (TUint8)(((LAR[5] >> 2) & 0x03) | ((LAR[6] << 2) & 0x1C) | ((LAR[7] << 5) & 0xE0));
+    
+    // pack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
+    for(TInt i = 0; i < 4; i++)
+        {
+        struct sfcodes& c = aCodeBuf->sfc[i];
+        *pbuf++ = (TUint8)((c.Nc & 0x7F) | ((c.bc << 7) & 0x80));
+        *pbuf++ = (TUint8)(((c.bc >> 1) & 0x01) | ((c.Mc << 1) & 0x06) | ((c.xmaxc << 3) & 0xF8));
+        *pbuf++ = (TUint8)(((c.xmaxc >> 5) & 0x01) | ((c.xMc[0] << 1) & 0x0E) | ((c.xMc[1] << 4) & 0x70) | ((c.xMc[2] << 7) & 0x80));
+        *pbuf++ = (TUint8)(((c.xMc[2] >> 1) & 0x03) | ((c.xMc[3] << 2) & 0x1C) | ((c.xMc[4] << 5) & 0xE0));
+        *pbuf++ = (TUint8)(((c.xMc[5]) & 0x07) | ((c.xMc[6] << 3) & 0x38) | ((c.xMc[7] << 6) & 0xC0));
+        *pbuf++ = (TUint8)(((c.xMc[7] >> 2) & 0x01) | ((c.xMc[8] << 1) & 0x0E) | ((c.xMc[9] << 4) & 0x70) | ((c.xMc[10] << 7) & 0x80));
+        *pbuf++ = (TUint8)(((c.xMc[10] >> 1) & 0x03) | ((c.xMc[11] << 2) & 0x1C) | ((c.xMc[12] << 5) & 0xE0));
+        }
+    }
+
+/**
+*
+* CTest_MMF_SwCodecDevices_U_0001
+*
+*/
+CTest_MMF_SwCodecDevices_U_0002::CTest_MMF_SwCodecDevices_U_0002()
+		{
+		// store the name of this test case
+		// this is the name that is used by the script file
+		iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0002-HP");
+		}
+/**
+*
+* CTest_MMF_SwCodecDevices_U_0001
+*
+**/
+CTest_MMF_SwCodecDevices_U_0002::~CTest_MMF_SwCodecDevices_U_0002()
+		{
+
+		}
+
+/**
+*
+*
+* DoTestStepL
+*
+**/
+TVerdict CTest_MMF_SwCodecDevices_U_0002::DoTestStepL()
+	{
+	__MM_HEAP_MARK;
+	TVerdict result = EPass ;
+	
+	 CMmfGsm610ToPcm16HwDevice* pDecoder = CMmfGsm610ToPcm16HwDevice::NewL();
+     CleanupStack::PushL(pDecoder);
+	 //[ note this reference should be a ptr ]
+     CMMFSwCodec& theCodec = pDecoder->Codec();
+ 
+	 //[ create buffers of the appropriate size ]
+	 const TInt srcBufferSize  = theCodec.SourceBufferSize();
+	 const TInt sinkBufferSize = theCodec.SinkBufferSize();
+	 const TInt codedBufferSize = 76*4* KNumFramesInABuffer; // number of coded buffers * size of coded buffer 63*2 
+	 iNumCodedFrames =  KNumFramesInABuffer;                                //XXX claculate these constants soon <GK>
+	
+	 iScratchData    = CMMFDescriptorBuffer::NewL( codedBufferSize);
+
+	 iRefCodedData   = CMMFDescriptorBuffer::NewL( srcBufferSize );  
+	 iCodedData      = CMMFDescriptorBuffer::NewL( srcBufferSize );
+	 iRefDecodedData = CMMFDescriptorBuffer::NewL( sinkBufferSize );
+	 iDecodedData    = CMMFDescriptorBuffer::NewL( sinkBufferSize); 
+	 
+	 //[ for now process only the first buffer ]
+	 //[encode the data]
+	 INFO_PRINTF1(_L("Decoding Frames..."));
+	 TInt codedFileSize = 0;
+	 iCodedFile.Size( codedFileSize);
+	
+     TInt numBuffers = codedFileSize/srcBufferSize;
+	 if(numBuffers > 4 )
+		 numBuffers = 4;
+	 TInt badBufferCount = 0;
+	 TInt goodBufferCount = 0;
+	 for( TInt bufferCount = 0; bufferCount < numBuffers; bufferCount++ )
+		 {
+		 ReadDataBufferL(iDecodeFile, *iRefDecodedData );
+		 ParseCodedDataL(iCodedData);
+ 
+		 CMMFSwCodec::TCodecProcessResult decodeRes = theCodec.ProcessL( *iCodedData, *iDecodedData );
+		 if( decodeRes !=  CMMFSwCodec::TCodecProcessResult::EProcessComplete  )
+			 {
+			 INFO_PRINTF1( _L("Error Failed to complete decoding") );
+			 return EFail;               
+			 }
+	
+		 //[ compare results ]
+		 if(!CompareDecodeResults( iDecodedData, iRefDecodedData ))
+			 {
+			 result = EFail;
+		     badBufferCount++;
+			 }
+		 else
+			 {
+			 goodBufferCount++;
+			 }
+		
+		 }
+
+	 	//[ log number of good frames & number of bad frames ]
+	INFO_PRINTF4(_L("Good Frames %d, Bad Frames %d, Total Frames %d"), 
+		goodBufferCount, badBufferCount, badBufferCount+goodBufferCount );
+
+	 //[pop data from the cleanup stack ]
+	 CleanupStack::PopAndDestroy(pDecoder); 
+
+	 delete iRefCodedData;
+	 iRefCodedData = NULL;
+	 delete iRefDecodedData;
+	 iRefDecodedData = NULL;
+	 delete iDecodedData; 
+	 iDecodedData = NULL;
+	 delete iCodedData ;
+	 iCodedData = NULL;
+	 delete iScratchData;
+	 iScratchData = NULL;
+
+	__MM_HEAP_MARKEND;                         
+    return result;
+	}
+
+/**
+*
+* DoTestStepPreambleL
+*
+*/
+enum TVerdict CTest_MMF_SwCodecDevices_U_0002::DoTestStepPreambleL(void)
+	{
+	TVerdict result = EPass;
+    //[ connect to the file server ]
+	User::LeaveIfError( iFs.Connect());
+
+	//[ read the ref source data ]
+	if(!GetStringFromConfig(_L("SectionOne"), _L("SourceData01"), iSourceDataFile) ||
+	   !GetStringFromConfig(_L("SectionOne"), _L("CodedData01"), iCodedDataFile) ||
+	   !GetStringFromConfig(_L("SectionOne"), _L("DecodedData01"), iDecodedDataFile) )
+		{
+		return EInconclusive;
+		}
+
+	//[ open the data files]
+	OpenFileL(iSrcFile,iSourceDataFile );
+	OpenFileL(iCodedFile,iCodedDataFile );
+	OpenFileL(iDecodeFile,iDecodedDataFile);
+
+	iScratchData = CMMFDescriptorBuffer::NewL(KCodedBufferSize);
+
+	return result;
+	}
+
+/**
+*
+* DoTestStepPostambleL
+* @result TVerdict
+* 
+*/
+TVerdict CTest_MMF_SwCodecDevices_U_0002::DoTestStepPostambleL(void)
+	{
+	// close files
+	CloseFileL( iCodedFile );
+	CloseFileL( iDecodeFile );
+    //[ clean up the buffers etc ]
+	delete iRefSrcData;     // reference source data
+	delete iRefCodedData;   //reference coded data
+	delete iRefDecodedData; // refernce decoded data
+	delete iCodedData;      // buffer of coded data
+	delete iDecodedData;    // buffer of actual decoded data
+	delete iScratchData;    // scratch data buffer
+	return EPass;
+	}
+
+/**
+*
+* CTest_MMF_SwCodecDevices_U_0003
+*
+**/
+CTest_MMF_SwCodecDevices_U_0003::CTest_MMF_SwCodecDevices_U_0003()
+		{
+		// store the name of this test case
+		// this is the name that is used by the script file
+		iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0003-HP");
+		}
+/**
+*
+* ~CTest_MMF_SwCodecDevices_U_0003
+*
+**/
+CTest_MMF_SwCodecDevices_U_0003::~CTest_MMF_SwCodecDevices_U_0003()
+	{
+
+	}
+
+/**
+*
+* DoTestStepL
+*
+**/
+TVerdict CTest_MMF_SwCodecDevices_U_0003::DoTestStepL()
+	{
+	__MM_HEAP_MARK;
+	TVerdict result = EPass ;
+	
+	 CMmfGsm610ToPcm16HwDevice* pDecoder = CMmfGsm610ToPcm16HwDevice::NewL();
+     CleanupStack::PushL(pDecoder);
+	 //[ note this reference should be a ptr ]
+     CMMFSwCodec& theCodec = pDecoder->Codec();
+ 
+	 // do the same for the inverse operation
+	 CMmfPcm16ToGsm610HwDevice* pEncoder = CMmfPcm16ToGsm610HwDevice::NewL();
+     CleanupStack::PushL(pEncoder);
+     CMMFSwCodec& theEncode = pEncoder->Codec();
+
+	 //[ create buffers of the appropriate size ]
+	 const TInt srcBufferSize = theEncode.SourceBufferSize();
+	 const TInt sinkBufferSize = theEncode.SinkBufferSize();
+
+	 iRefSrcData     = CMMFDescriptorBuffer::NewL( srcBufferSize );   
+	 iRefCodedData   = CMMFDescriptorBuffer::NewL( sinkBufferSize );  
+	 iRefDecodedData = CMMFDescriptorBuffer::NewL( srcBufferSize );
+	 iCodedData      = CMMFDescriptorBuffer::NewL( sinkBufferSize );   
+	 iDecodedData    = CMMFDescriptorBuffer::NewL( srcBufferSize ); 
+	 
+     //[ now get a sine wave of 800hz, code and decode and
+	 // compare the results ]
+	 FillPcmBuffer( *iRefSrcData );
+
+	 // encode
+	CMMFSwCodec::TCodecProcessResult encodeRes = theEncode.ProcessL( *iRefSrcData, *iCodedData );
+	 if( encodeRes !=  CMMFSwCodec::TCodecProcessResult::EProcessComplete  )
+		 {
+		 INFO_PRINTF1( _L("Error Failed to complete coding") );
+		 return EFail;               
+		 }
+
+	 //decode
+	 CMMFSwCodec::TCodecProcessResult decodeRes = theCodec.ProcessL( *iCodedData, *iDecodedData );
+	 if( decodeRes !=  CMMFSwCodec::TCodecProcessResult::EProcessComplete  )
+		 {
+		 INFO_PRINTF1( _L("Error Failed to complete decoding") );
+		 return EFail;               
+		 }
+
+	 //[ because the codec overwrites its input regenerate it ]
+	 FillPcmBuffer( *iRefSrcData );
+
+     //[ NOW COMPARE THE RESULTS DISTORTION < 18 DB ]
+	 
+	 TUint8 *pResults = (TUint8*)(iDecodedData->Data().Ptr());  
+	 TUint8 *pRefData = (TUint8*)(iRefSrcData->Data().Ptr());
+	 TInt numResults  = iDecodedData->Data().MaxLength(); 
+	 TReal sum1 = 0.0;
+	 TReal sum2 = 0.0;
+	 TReal ratio = 0.0;
+	 TInt16 temp1 = 0;
+	 TInt16 temp2 = 0;
+	 numResults /= 2; // compensate for bytes to short conversion
+	 //[print the results to allow analysis]
+	 for( TInt index = 0; index < numResults; index++ )
+		 {
+		 temp1  = static_cast<TInt16>((*pResults++) &KAndMask8bit);
+		 temp1 |= static_cast<TInt16>((*pResults++ << 8));
+		 sum1 += temp1*temp1;
+		 temp2  = static_cast<TInt16>((*pRefData++) &KAndMask8bit);
+		 temp2 |= static_cast<TInt16>((*pRefData++ << 8));
+		 sum2 += (temp2-temp1)*(temp2-temp1);
+		 //INFO_PRINTF3( _L("S %d D %d"),temp2, temp1 ); // add for debugging purposes
+		 }
+
+	 //[calculate the ratio ]
+	 ratio = sum1;
+	 ratio /=sum2;
+	 TReal sn = 0.0;
+	 // calculate as 18db
+	 Math::Log( sn, ratio );
+	 sn *= 10;
+
+	 INFO_PRINTF2( _L("Signal to Noise Ratio @800Hz %f db"), sn );
+#ifdef EABI
+	 if( sn < 18 ) //[ @800hz a sn of less than 18db is deemed a failure 
+		           // not that sn is a great measure of a voice coder's quality]
+		 result = EFail ;
+#else
+	 if( sn < 14 ) //DEF086144 - Codec source buffer size is reduced
+		 result = EFail ;
+#endif
+	 //[pop data from the cleanup stack ]
+	 CleanupStack::PopAndDestroy(2, pDecoder); //pDecoder, theCodec,
+     delete iRefSrcData;   
+	 iRefSrcData = NULL;
+	 delete iRefCodedData;
+	 iRefCodedData = NULL;
+	 delete iRefDecodedData;
+	 iRefDecodedData = NULL;
+	 delete iCodedData;   
+	 iCodedData = NULL;
+	 delete iDecodedData;
+	 iDecodedData = NULL;
+	 
+	__MM_HEAP_MARKEND;
+
+    return result;
+	}
+
+/**
+*
+* DoTestStepPreambleL
+*
+**/
+TVerdict CTest_MMF_SwCodecDevices_U_0003::DoTestStepPreambleL(void)
+	{
+	return EPass;
+	}
+
+/**
+*
+* DoTestStepPostambleL
+*
+**/
+TVerdict CTest_MMF_SwCodecDevices_U_0003::DoTestStepPostambleL(void)
+	{
+	return EPass;
+	}
+
+/**
+*
+* FillSrcBufferL
+* @param aSrcData pointer to the src data which stores 16bit samples
+* @param aNoSamples number of 16bit samples to store
+* @param aOffset offset used to generate the samples (linear range)
+**/
+void TLawUtility::FillSrcBufferL( TUint8* aSrcData, TInt aNoSamples, TInt16 aOffset )
+	{
+	//[precondition aSrcData != NULL ]
+	if( !aSrcData )
+		User::Leave( KErrArgument );
+	const TInt16 KUpperLimit = static_cast<TInt16>(aOffset + aNoSamples);
+	TUint8* pDest = aSrcData ;
+	for( TInt16 i = aOffset; i< KUpperLimit; i++ )
+		{
+	     *pDest++ = static_cast<TUint8>( i & 0xff);
+		 *pDest++ = static_cast<TUint8>( (i >>8) &0xff );
+		}
+	}
+
+/**
+*
+* CompareCodedData
+* @param aCodedData the data coded using symbian codec
+* @param aRefCodedData the data coded using independent implementation
+* @param aNoSamples the number of coded samples
+*
+**/
+TInt TLawUtility::CompareCodedDataL(TUint8* aCodedData,TUint8* aRefCodedData, TInt aNoSamples )
+	{
+	TInt result = KErrNone;
+	//[precondition aCodedData != NULL ]
+     if( !aCodedData )
+		 User::Leave( KErrArgument);
+	 //[preciondition aRefCodedData != NULL ]
+	 if( !aRefCodedData )
+		 User::Leave( KErrArgument );
+
+	 //[ use mem compare to compare the data Buffers ]
+	if( Mem::Compare(aCodedData, aNoSamples, aRefCodedData, aNoSamples )!=0)
+		{
+		//[ data is not the same ]
+		for( TInt count = 0; count < aNoSamples; count++ )
+			{
+		 //RDebug::Print(_L("c1 %u c2 %u"), *aCodedData++, *aRefCodedData++); Statement commented under DEF105143
+		      *aCodedData++; 
+		      *aRefCodedData++; 
+			}
+		result = KErrCorrupt;
+		}
+
+	 return result;
+	}
+
+/**
+*
+* AssembleValL
+* @param aDecodedData
+* @return decoded value
+*
+**/
+TInt16 TLawUtility::AssembleValL(TUint8* aDecodedData)
+	{
+	TInt16 val;
+    if(!aDecodedData )
+		User::Leave( KErrArgument);
+ 
+	//assemble the value 
+	val  = static_cast<TInt16>( aDecodedData[0] &KAndMask8bit);  
+	val |=  static_cast<TInt16>((aDecodedData[1] << 8 ));
+
+	return val;
+	}
+
+/**
+*
+* SNRatio
+*
+**/
+TReal TLawUtility::SNRatioL(TUint8* aDecodedData, TUint8* aSrcData, TInt aNoSamples )
+	{
+	const TReal KThreshold = 0.0001;
+    TReal ratio = 0.0;
+    //[precondition aDecodedData != NULL ]
+    if( !aDecodedData )
+		User::Leave( KErrArgument );
+	//[ precondition aSrcData != NULL ]
+	if( !aSrcData )
+		User::Leave( KErrArgument );
+    
+	TReal   sumSig      = 0.0;    // numerator
+	TReal   sumNoise    = 0.0; // denominator
+	TInt    difference  = 0;
+	TInt16  dataValue   = 0;
+	TInt    decodeVal   = 0;
+	for( TInt count = 0; count < aNoSamples; count++ )
+		{
+        decodeVal = AssembleValL(aDecodedData);
+        dataValue = AssembleValL(aSrcData);
+		difference = decodeVal - dataValue;
+		sumSig += (decodeVal*decodeVal);     // sum of the squares of the signal
+		sumNoise += (difference * difference );  // sum of the square of the difference
+		aDecodedData+=2;
+		aSrcData+=2;
+		}
+
+	//[ guard against division by zero ]
+	if( !( sumNoise >= KThreshold ))
+		User::Leave( KErrUnderflow );
+
+	//[ calculate the sn ratio ]
+	//[ 10log10( sumSig/SumNoise ]
+	Math::Log( ratio, (sumSig/sumNoise) );
+    ratio *= 10;  // ratio = 10*log( x**2/(error**2)) in db
+    return ratio;
+	}
+
+/**
+*
+* CompareSNRatiosL
+* @param aCodecSN   codec under test SN ratio in db
+* @param aCodecSN2  refernce codec SN ratio in db
+* @param aThreshold difference allowed in db
+* @result within tolerance
+*
+**/
+TBool TLawUtility::CompareSNRatiosL( TReal aCodecSN, TReal aCodecSN2, TReal aTolerance )
+	{
+    TBool result = ETrue; 
+	TReal difference = (aCodecSN - aCodecSN2);
+	//[ it would be nice to replace this with a abs function ?]
+	if( difference < 0.0 )
+		{
+         if( aTolerance > difference )
+			 {
+			 result = EFalse;
+			 }
+		}
+	else
+		{
+         if( aTolerance < difference )
+			 {
+			 result = EFalse;
+			 }
+		}
+
+	return result;
+	}
+
+/**
+*
+* ComputeSNL compute the Signal to Noise Ratio
+*
+**/
+TReal TLawUtility::ComputeSNL( TReal aSumSigSquared, TReal aSumErrorSquared )
+	{
+	 TReal sn = 0.0;
+     const TReal tolerance = 0.001;
+	 //[precondition error is >= tolerance ]
+	 if( aSumErrorSquared < tolerance )
+		 User::Leave( KErrArgument );
+     //[claculate ratio safely ]
+	 Math::Log( sn, (aSumSigSquared/aSumErrorSquared));
+	 sn*= 10;
+	 return sn;
+	}
+
+/**
+*
+* SumSquaredL
+*
+**/
+TReal TLawUtility::SumSquaredL( TUint8* aData, TInt aNoSamples )
+	{
+	//[precondition arg is ok ]
+     if( !aData )
+		 {
+		 User::Leave(KErrArgument);
+		 }
+
+	 TUint8* pData = aData;
+	 TInt16 sample ;
+	 TReal sumSigSquared = 0.0;
+	 for( TInt count = 0; count < aNoSamples; count++ )
+		 {
+		 sample  = static_cast<TInt16>( pData[0] &KAndMask8bit);  
+		 sample |=  static_cast<TInt16>((pData[1] << 8 ));
+		 sumSigSquared += (sample*sample);
+		 pData+=2;
+		 }
+
+	 return sumSigSquared;
+	}
+
+/**
+*
+* SumErrorSquaredL
+* @param aData
+* @param aData2
+* @param aNoSamples
+* @result TReal
+*
+**/
+TReal TLawUtility::SumErrorSquaredL( TUint8* aData, TUint8* aData2, TInt aNoSamples )
+	{
+	//[precondition aData is not NULL]
+	 if( !aData )
+		 {
+		 User::Leave(KErrArgument);
+		 }
+
+	 //[precondition aData2 is not NULL ]
+	if( !aData2 )
+		 {
+		 User::Leave(KErrArgument);
+		 }
+
+	 TUint8* pData = aData;
+	 TUint8* pData2 = aData2;
+	 TInt16 sample ;
+	 TInt16 sample2;
+	 TReal sumErrorSquared = 0.0;
+	 TInt error;
+	 for( TInt count = 0; count < aNoSamples; count++ )
+		 {
+		 error = 0;
+		 sample  = static_cast<TInt16>( pData[0] &KAndMask8bit);  
+		 sample |=  static_cast<TInt16>((pData[1] << 8 ));
+		 sample2  = static_cast<TInt16>( pData2[0] &KAndMask8bit);  
+		 sample2 |=  static_cast<TInt16>((pData2[1] << 8 ));
+		 error = sample -sample2; // compute the error
+		 sumErrorSquared += (error*error); // add error squared to the sum
+		 pData  +=2;
+		 pData2 +=2;
+		 }
+
+	 return sumErrorSquared;
+	}
+
+/**
+*
+* CTestMuLawCodec_U_0006
+*
+**/
+CTestMuLawCodec_U_0006::CTestMuLawCodec_U_0006()
+	{
+     //[ set test name]
+	iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0006-HP");
+	}
+
+/**
+*
+* LinearToMuLawSample
+* @param aSample a 16 bit pcm sample
+* @result Mu Law encoded sample
+*
+**/
+TUint8 CTestMuLawCodec_U_0006::LinearToMuLawSample( TInt16 aSample)
+	{
+	const int KBias = 0x84;
+	const int KClip = 32635;
+	TInt sign = (aSample >> 8) & 0x80;
+	if(sign)
+		aSample = static_cast<TInt16>(-aSample);
+	if(aSample > KClip)
+		aSample = KClip;
+	aSample = static_cast<TInt16>(aSample + KBias);
+	TInt exponent = static_cast<TInt>( MuLawCompressTable[(aSample>>7) & 0xFF]);
+	TInt mantissa = (aSample >> (exponent+3)) & 0x0F;
+	TInt compressedByte = ~(sign | (exponent << 4) | mantissa);
+	return static_cast<TUint8>( compressedByte );
+	}
+
+/**
+*
+* ConvertPcmMuLaw
+*
+**/
+void CTestMuLawCodec_U_0006::ConvertPcmMuLawL(TUint8* aSrcData, TUint8* aCodedData, TInt aNumSamples ) 
+	{
+	//[ precondition aSrcData ]
+     if( !aSrcData )
+		 User::Leave( KErrArgument );
+	 //[precondition aCodedData ]
+	 if( !aCodedData )
+		 User::Leave( KErrArgument );
+
+	 TUint8* pCoded = aCodedData;
+	 TUint8* pData  = aSrcData ;
+	 TInt16 pcmSample;
+	 for( TInt count = 0; count < aNumSamples; count++ )
+		 {
+          //[ code the data ]
+		  pcmSample  = static_cast<TInt16>(pData[0]);
+		  pcmSample |= static_cast<TInt16>((pData[1] << 8 )); 
+          *pCoded++ = LinearToMuLawSample(pcmSample);
+		  pData+=2;
+		 }
+	}
+
+/**
+*
+* ConvertMuLawPcm
+* 
+**/
+void CTestMuLawCodec_U_0006::ConvertMuLawPcmL(TUint8* aCoded, TUint8* aDecoded, TInt aNumSamples )
+	{
+	//[ precondition aCoded ]
+	if( !aCoded )
+		User::Leave( KErrArgument );
+	//[precondition aDecoded ]
+	if( !aDecoded )
+		User::Leave( KErrArgument );
+	
+	TInt16  pcmSample;
+	TUint8* pCoded   = aCoded;
+	TUint8* pDecoded = aDecoded;
+	//[ lets convert the data ]
+	for(TInt count = 0; count < aNumSamples; count++ )
+		{
+		pcmSample = MuLawDecompressTable[*pCoded++];
+		*pDecoded++ = static_cast<TUint8>( pcmSample & 0xFF);
+		*pDecoded++ = static_cast<TUint8>((pcmSample >> 8 ) & 0xFF);
+		}
+	}
+
+/**
+*
+* DoTestStepL
+*
+**/
+TVerdict CTestMuLawCodec_U_0006::DoTestStepL()
+	{
+	TVerdict result = EPass;
+	const TInt KSrcBufferSize     = 400;    // small buffer size
+	const TInt KHalfSrcBufferSize = 200;    // small buffer size
+	const TInt KCodedBufferSize   = 200;    // small buffer size
+	const TInt KLowerLimit        = -800; //lower limit of test range
+	const TInt KUpperLimit        = 800;  // upper limit of test range +1
+	
+	//[ allocate memory buffers]
+	TUint8* pSymbianSrcData = new(ELeave)TUint8[KSrcBufferSize];
+	CleanupStack::PushL(pSymbianSrcData);
+	TUint8* pIndependentSrcData = new(ELeave)TUint8[KSrcBufferSize];
+	CleanupStack::PushL(pIndependentSrcData);
+	TUint8* pSymbianCodedData = new(ELeave)TUint8[KCodedBufferSize];
+	CleanupStack::PushL(pSymbianCodedData);
+	TUint8* pIndependentCodedData = new(ELeave)TUint8[KCodedBufferSize];
+	CleanupStack::PushL(pIndependentCodedData);
+	TUint8* pSymbianDecodedData = new(ELeave)TUint8[KSrcBufferSize];
+	CleanupStack::PushL(pSymbianDecodedData);
+	TUint8* pIndependentDecodedData = new(ELeave)TUint8[KSrcBufferSize];
+	CleanupStack::PushL(pIndependentDecodedData);
+	
+    TMMFAudioMuLawToS16PcmCodec decoder;
+	TMMFAudioSPcm16ToMuLawCodec encoder;
+
+	TLawUtility helper;
+	TReal symbianCodecSN = 0.0;
+	TReal independentCodecSN = 0.0;
+
+	TReal sumRefSig       = 0.0; // sum of sig squared
+	TReal sumRefError     = 0.0; // sum of error sig squared
+	TReal sumSymbianSig   = 0.0; // sum of sig squared
+	TReal sumSymbianError = 0.0; // sum of error sig squared
+
+	//[ interate over a suitable range and process each buffer]
+	for( TInt index = KLowerLimit; index < KUpperLimit; index+= KHalfSrcBufferSize )
+		{
+		TInt16 offset = static_cast<TInt16>( index);
+		//[ fill the src buffers ]
+		helper.FillSrcBufferL( pSymbianSrcData, KHalfSrcBufferSize, offset );
+		helper.FillSrcBufferL( pIndependentSrcData, KHalfSrcBufferSize, offset );
+
+		//[encode the src data ]
+		encoder.Convert( pSymbianSrcData, pSymbianCodedData, KHalfSrcBufferSize );
+		ConvertPcmMuLawL(pIndependentSrcData,pIndependentCodedData,KHalfSrcBufferSize );
+	
+		//[ decode the data ]
+        decoder.Convert( pSymbianCodedData, pSymbianDecodedData, KHalfSrcBufferSize );		
+	    ConvertMuLawPcmL( pIndependentCodedData,pIndependentDecodedData,KHalfSrcBufferSize);		
+	
+		//[ check both codecs code the data similarly]
+		TInt errorCode =helper.CompareCodedDataL(pIndependentCodedData, pSymbianCodedData, KHalfSrcBufferSize );		
+		if( errorCode != KErrNone )
+			{
+			INFO_PRINTF1(_L("Forward Transformation for Mu-Law codec is not conformant to ref codec"));
+			User::LeaveIfError(errorCode);
+			}
+			//[ upate running total sums to be used for signal to noise
+		// ratio calculations ]
+		sumRefSig        += helper.SumSquaredL(pIndependentSrcData, KHalfSrcBufferSize);     
+		sumRefError      += helper.SumErrorSquaredL(pIndependentSrcData,pIndependentDecodedData,KHalfSrcBufferSize); 
+		sumSymbianSig    += helper.SumSquaredL(pSymbianSrcData,KHalfSrcBufferSize);
+		sumSymbianError  += helper.SumErrorSquaredL(pSymbianSrcData,pSymbianDecodedData,KHalfSrcBufferSize);
+		}
+ 		
+	const TReal KTolerance = 1; // allow for a 1 db tolerance
+	symbianCodecSN     = helper.ComputeSNL(sumSymbianSig,sumSymbianError);
+	independentCodecSN = helper.ComputeSNL(sumRefSig, sumRefError);
+    // Gamma = (dynamic range of codec /signal std deviation )
+	INFO_PRINTF1(_L("We would expect S/N ration to be greater than 35db for an MuLaw codec with Gamma = 10"));
+	INFO_PRINTF2(_L("Signal/Noise Ratio Symbian Codec %f"), symbianCodecSN ); 
+	INFO_PRINTF2(_L("Signal/Noise Ratio Reference Codec %f"), independentCodecSN ); 
+
+	//[ compare the s/n ratio's of the two codec implementations]
+	if( !helper.CompareSNRatiosL( symbianCodecSN, independentCodecSN, KTolerance ))
+		{
+		//[ fail the test because the s/n ratios were divergent ]
+		result = EFail;
+		}
+	CleanupStack::PopAndDestroy(6,pSymbianSrcData); //pSymbianSrcData,pIndependentSrcData,
+	                                                //pSymbianCodedData,pIndependentCodedData
+	                                                //pSymbianDecodedData,pIndependentDecodedData 
+	
+	return result;
+	}
+
+/**
+*
+*  DoTestStepPreambleL
+*
+**/
+TVerdict CTestMuLawCodec_U_0006::DoTestStepPreambleL(void)
+	{
+	TVerdict result = EPass;
+	return result; //nothing doing
+	}
+
+/**
+*
+* DoTestStepPostambleL
+*
+**/
+TVerdict CTestMuLawCodec_U_0006::DoTestStepPostambleL(void)
+	{
+	TVerdict result = EPass;
+	return result; //nothing doing
+	}
+
+/**
+*
+* Mu-Law Compression Table
+*
+**/
+const TInt8 CTestMuLawCodec_U_0006::MuLawCompressTable[PcmToMuLawCompressionTableSize] =
+{
+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
+};
+
+/**
+*
+* Mu-Law Decompression Table
+*
+**/
+const TInt16 CTestMuLawCodec_U_0006::MuLawDecompressTable[MuLawToPcmCompressionTableSize]=
+{
+-32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
+-23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
+-15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
+-11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
+-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
+-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
+-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
+-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
+-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
+-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
+-876, -844, -812, -780, -748, -716, -684, -652,
+-620, -588, -556, -524, -492, -460, -428, -396,
+-372, -356, -340, -324, -308, -292, -276, -260,
+-244, -228, -212, -196, -180, -164, -148, -132,
+-120, -112, -104, -96, -88, -80, -72, -64,
+-56, -48, -40, -32, -24, -16, -8, 0,
+32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
+23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
+15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
+11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
+7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
+5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
+3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
+2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
+1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
+1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
+876, 844, 812, 780, 748, 716, 684, 652,
+620, 588, 556, 524, 492, 460, 428, 396,
+372, 356, 340, 324, 308, 292, 276, 260,
+244, 228, 212, 196, 180, 164, 148, 132,
+120, 112, 104, 96, 88, 80, 72, 64,
+56, 48, 40, 32, 24, 16, 8, 0
+};
+
+/**
+*
+* CTestALawCodec_U_0004
+*
+**/
+CTestALawCodec_U_0004::CTestALawCodec_U_0004()
+	{
+    //[ set test name ]
+	iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0004-HP");
+	}
+
+/**
+*
+* ConvertPcmALaw converts Pcm 16 to 8bit ALaw
+* @param aSrcData The src data
+* @param aCoded   The coded result
+* @param aNumSamples The number of samples to be processed
+* @precondition aSrcData is not NULL
+* @precondition aCodedData is not NULL
+* @precondition there is sufficient room in the destination
+* to contain the coded samples
+*
+**/
+void CTestALawCodec_U_0004::ConvertPcmALawL(TUint8* aSrcData, TUint8* aCodedData, TInt aNumSamples )
+	{
+	//[ precondition aSrcData ]
+     if( !aSrcData )
+		 User::Leave( KErrArgument );
+	 //[precondition aCodedData ]
+	 if( !aCodedData )
+		 User::Leave( KErrArgument );
+
+	 TUint8* pCoded = aCodedData;
+	 TUint8* pData  = aSrcData ;
+	 TInt16 pcmSample;
+	 for( TInt count = 0; count < aNumSamples; count++ )
+		 {
+          //[ code the data ]
+		  pcmSample  = static_cast<TInt16>(pData[0]);
+		  pcmSample |= static_cast<TInt16>((pData[1] << 8 )); 
+          *pCoded++ = LinearToALawSample(pcmSample);
+		  pData+=2;
+		 }
+	}
+
+/**
+*
+* ConvertALawPcm converts from 8bit ALaw to Pcm16
+* @param aCoded The coded data
+* @param aDecoded The decoded result
+* @param aNumSamples The number of samples to be processed
+* @precondition aCoded is not NULL
+* @precondition aDecoded is not NULL
+* @precondition there is sufficient room in the destination
+* to contain the coded samples
+*
+**/
+void CTestALawCodec_U_0004::ConvertALawPcmL(TUint8* aCoded, TUint8* aDecoded, TInt aNumSamples )
+	{
+	 //[ precondition aSrcData ]
+     if( !aCoded )
+		 User::Leave( KErrArgument );
+	 //[precondition aCodedData ]
+	 if( !aDecoded )
+		 User::Leave( KErrArgument );
+   
+	 TInt16  pcmSample;
+     TUint8* pCoded   = aCoded;
+	 TUint8* pDecoded = aDecoded;
+	 //[ lets convert the data ]
+     for(TInt count = 0; count < aNumSamples; count++ )
+		 {
+          pcmSample = ALawDecompressTable[*pCoded++];
+          *pDecoded++ = static_cast<TUint8>(pcmSample & 0xFF);
+		  *pDecoded++ = static_cast<TUint8>((pcmSample >> 8 ) & 0xFF);
+		 }
+	}
+
+/**
+*
+* LinearToALawSample converts a Pcm16 sample to ALaw
+* @param aSample the PCM 16 sample to be converted
+* @result coded result
+* 
+**/
+TUint8 CTestALawCodec_U_0004::LinearToALawSample(TInt16 aSample)
+	{
+	const TInt KClip = 32635;
+	TInt sign;
+	TInt exponent;
+	TInt mantissa;
+	TUint8 compressedByte;
+	sign = ((~aSample) >> 8) & 0x80;
+	if(!sign)
+		aSample = static_cast<TInt16>(-aSample);
+	if(aSample > KClip)
+		aSample = KClip;
+	if(aSample >= 256)
+		{
+		exponent = static_cast<TInt>( ALawCompressTable[(aSample >> 8) & 0x7F]);
+		mantissa = (aSample >> (exponent + 3) ) & 0x0F;
+		compressedByte = static_cast<TUint8> ((exponent << 4) | mantissa);
+		}
+	else
+		{
+		compressedByte = static_cast<TUint8> (aSample >> 4);
+		}
+	compressedByte ^= (sign ^ 0x55);
+	return compressedByte;
+	}
+
+/**
+*
+* DoTestStepL
+* 
+**/
+TVerdict CTestALawCodec_U_0004::DoTestStepL()
+	{
+	TVerdict result = EPass;
+	const TInt KSrcBufferSize     = 400;    // small buffer size
+	const TInt KHalfSrcBufferSize = 200;    // small buffer size
+	const TInt KCodedBufferSize   = 200;    // small buffer size
+	const TInt KLowerLimit        = -400; //lower limit of test range
+	const TInt KUpperLimit        = 400;  // upper limit of test range +1
+	
+	//[ allocate memory buffers]
+	TUint8* pSymbianSrcData = new(ELeave)TUint8[KSrcBufferSize];
+	CleanupStack::PushL(pSymbianSrcData);
+	TUint8* pIndependentSrcData = new(ELeave)TUint8[KSrcBufferSize];
+	CleanupStack::PushL(pIndependentSrcData);
+	TUint8* pSymbianCodedData = new(ELeave)TUint8[KCodedBufferSize];
+	CleanupStack::PushL(pSymbianCodedData);
+	TUint8* pIndependentCodedData = new(ELeave)TUint8[KCodedBufferSize];
+	CleanupStack::PushL(pIndependentCodedData);
+	TUint8* pSymbianDecodedData = new(ELeave)TUint8[KSrcBufferSize];
+	CleanupStack::PushL(pSymbianDecodedData);
+	TUint8* pIndependentDecodedData = new(ELeave)TUint8[KSrcBufferSize];
+	CleanupStack::PushL(pIndependentDecodedData);
+	
+	TMMFAudioSPcm16ToAlawCodec encoder;
+	TMMFAudioALawToS16PcmCodec decoder;
+    
+	TLawUtility helper;
+	TReal symbianCodecSN = 0.0;
+	TReal independentCodecSN = 0.0;
+
+	TReal sumRefSig       = 0.0; // sum of sig squared
+	TReal sumRefError     = 0.0; // sum of error sig squared
+	TReal sumSymbianSig   = 0.0; // sum of sig squared
+	TReal sumSymbianError = 0.0; // sum of error sig squared
+
+	//[ interate over a suitable range and process each buffer]
+	for( TInt index = KLowerLimit; index < KUpperLimit; index+= KHalfSrcBufferSize )
+		{
+		TInt16 offset = static_cast<TInt16>( index);
+		//[ fill the src buffers ]
+		helper.FillSrcBufferL( pSymbianSrcData, KHalfSrcBufferSize, offset );
+		helper.FillSrcBufferL( pIndependentSrcData, KHalfSrcBufferSize, offset );
+
+		//[encode the src data ]
+		encoder.Convert( pSymbianSrcData, pSymbianCodedData, KHalfSrcBufferSize );
+		ConvertPcmALawL(pIndependentSrcData,pIndependentCodedData,KHalfSrcBufferSize );
+	
+		//[ decode the data ]
+        decoder.Convert( pSymbianCodedData, pSymbianDecodedData, KHalfSrcBufferSize );		
+	    ConvertALawPcmL( pIndependentCodedData,pIndependentDecodedData,KHalfSrcBufferSize);		
+	
+		//[ check both codecs code the data similarly]
+		 TInt errorCode = helper.CompareCodedDataL(pIndependentCodedData, pSymbianCodedData, KHalfSrcBufferSize );
+		 if( errorCode != KErrNone )
+			 {
+			 INFO_PRINTF1(_L("Forward Transformation for ALaw codec is not conformant to ref codec"));
+			 User::LeaveIfError(errorCode);
+			 }
+	    
+		//[ upate running total sums to be used for signal to noise
+		// ratio calculations ]
+		sumRefSig        += helper.SumSquaredL(pIndependentSrcData, KHalfSrcBufferSize);     
+		sumRefError      += helper.SumErrorSquaredL(pIndependentSrcData,pIndependentDecodedData,KHalfSrcBufferSize); 
+		sumSymbianSig    += helper.SumSquaredL(pSymbianSrcData,KHalfSrcBufferSize);
+		sumSymbianError  += helper.SumErrorSquaredL(pSymbianSrcData,pSymbianDecodedData,KHalfSrcBufferSize);
+		}
+	const TReal KTolerance = 1; // allow for a 1 db tolerance
+	symbianCodecSN     = helper.ComputeSNL(sumSymbianSig,sumSymbianError);
+	independentCodecSN = helper.ComputeSNL(sumRefSig, sumRefError);
+    // Gamma = (dynamic range of codec /signal std deviation )
+	INFO_PRINTF1(_L("We would expect S/N ration to be greater than 30db for an ALaw codec with Gamma = 10"));
+	INFO_PRINTF2(_L("Signal/Noise Ratio Symbian Codec %f"), symbianCodecSN ); 
+	INFO_PRINTF2(_L("Signal/Noise Ratio Reference Codec %f"), independentCodecSN ); 
+
+	//[ compare the s/n ratio's of the two codec implementations]
+	if( !helper.CompareSNRatiosL( symbianCodecSN, independentCodecSN, KTolerance ))
+		{
+		//[ fail the test because the s/n ratios were divergent ]
+		result = EFail;
+		}
+	
+	CleanupStack::PopAndDestroy(6,pSymbianSrcData); //pSymbianSrcData,pIndependentSrcData,
+	                                //pSymbianCodedData,pIndependentCodedData
+	                                //pSymbianDecodedData,pIndependentDecodedData 
+	return result;                  
+	}
+
+/**
+*
+* DoTestStepPreambleL
+*
+**/
+TVerdict CTestALawCodec_U_0004::DoTestStepPreambleL(void)
+	{
+	TVerdict result = EPass;
+	return result; //nothing doing
+	}
+/**
+*
+* DoTestStepPostambleL
+*
+**/
+TVerdict CTestALawCodec_U_0004::DoTestStepPostambleL(void)
+	{
+	TVerdict result = EPass;
+	return result; //nothing doing
+	}
+/**
+*
+* ALaw Compression Table
+*
+**/
+const TInt8 CTestALawCodec_U_0004::ALawCompressTable[PcmToALawCompressionTableSize] =
+{
+1,1,2,2,3,3,3,3,
+4,4,4,4,4,4,4,4,
+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,
+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
+};
+
+/**
+*
+* ALaw Decompression Table 
+*
+**/
+const TInt16 CTestALawCodec_U_0004::ALawDecompressTable[ALawToPcmCompressionTableSize] =
+{
+-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
+-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
+-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
+-3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
+-22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944,
+-30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136,
+-11008,-10496,-12032,-11520,-8960, -8448, -9984, -9472,
+-15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568,
+-344, -328, -376, -360, -280, -264, -312, -296,
+-472, -456, -504, -488, -408, -392, -440, -424,
+-88, -72, -120, -104, -24, -8, -56, -40,
+-216, -200, -248, -232, -152, -136, -184, -168,
+-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
+-1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
+-688, -656, -752, -720, -560, -528, -624, -592,
+-944, -912, -1008, -976, -816, -784, -880, -848,
+5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
+7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
+2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
+3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
+22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
+30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
+11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
+15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
+344, 328, 376, 360, 280, 264, 312, 296,
+472, 456, 504, 488, 408, 392, 440, 424,
+88, 72, 120, 104, 24, 8, 56, 40,
+216, 200, 248, 232, 152, 136, 184, 168,
+1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
+1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
+688, 656, 752, 720, 560, 528, 624, 592,
+944, 912, 1008, 976, 816, 784, 880, 848
+};
+
+/**
+*
+* CTestIMaadCodec
+*
+**/
+CTestIMaadCodec::CTestIMaadCodec()
+	{
+	//[ set test name ]
+	iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0022-HP");
+	}
+
+/**
+*
+* DoTestStepL
+*
+**/
+TVerdict CTestIMaadCodec::DoTestStepL()
+	{
+	__MM_HEAP_MARK;    
+	TVerdict result = EPass;
+	TInt srcBufferSize;
+	TInt sinkBufferSize;
+	const TReal KExpectedSNRatioDb = 30.0; //30 db for now
+   
+	//[ Create coder and decoder codecs ]
+	CMMFPcm16ToImaAdpcmHwDevice* pHwDevice = CMMFPcm16ToImaAdpcmHwDevice::NewL();
+    CleanupStack::PushL( pHwDevice );
+
+	CMMFSwCodec& theCodec = pHwDevice->Codec();
+
+	CMMFImaAdpcmToPcm16CodecHwDevice* pHwDecoder = CMMFImaAdpcmToPcm16CodecHwDevice::NewL();
+    CleanupStack::PushL( pHwDecoder );
+
+	CMMFSwCodec& theDecoder = pHwDecoder->Codec();
+
+	//[ Create data buffers with position != 0]
+	srcBufferSize  = 100; // arbitrary non zero size
+	sinkBufferSize = 100;
+    CMMFDescriptorBuffer* pSrcBuffer =  CMMFDescriptorBuffer::NewL( srcBufferSize ); 
+	CleanupStack::PushL( pSrcBuffer );
+	
+	CMMFDescriptorBuffer* pSinkBuffer = CMMFDescriptorBuffer::NewL( sinkBufferSize ); 
+	CleanupStack::PushL( pSinkBuffer );
+
+	//[ trap & check error code ]
+	TInt errCode;
+	pSrcBuffer->Data().SetLength(srcBufferSize);
+	pSinkBuffer->Data().SetLength(sinkBufferSize);
+	pSrcBuffer->SetPosition(1);
+    TRAP( errCode, theCodec.ProcessL(*pSrcBuffer, *pSinkBuffer));
+	if( errCode != KErrArgument )
+		{
+		result = EFail;
+		return result;
+		}
+
+  	//[set position of sink buffer to nonzero value]
+	pSrcBuffer->SetPosition(0);
+    pSinkBuffer->SetPosition(1);
+    TRAP( errCode, theCodec.ProcessL(*pSrcBuffer, *pSinkBuffer));
+	if( errCode != KErrArgument )
+		{
+		result = EFail;
+		return result;
+		}
+
+	//[set position of sink and src to nonzero value ]
+	pSrcBuffer->SetPosition(1);
+    pSinkBuffer->SetPosition(1);
+    TRAP( errCode, theCodec.ProcessL(*pSrcBuffer, *pSinkBuffer));
+	if( errCode != KErrArgument )
+		{
+		result = EFail;
+		return result;
+		}
+
+	//[ reset the position of both buffers to zero ]
+    pSrcBuffer->SetPosition(0);
+    pSinkBuffer->SetPosition(0);
+    //[ set the src/sink buffer sizes to src and sink
+	// buffer sizes and fill src with data ]
+	CleanupStack::PopAndDestroy(2, pSrcBuffer); // pSrcBuffer, pSinkBuffer
+    
+	//[Create Source & Sink and fill source data in ]
+	srcBufferSize = theCodec.SourceBufferSize();
+	pSrcBuffer  = CMMFDescriptorBuffer::NewL( srcBufferSize );
+	CleanupStack::PushL( pSrcBuffer );
+
+	CMMFDescriptorBuffer* pDecodedBuffer = CMMFDescriptorBuffer::NewL( srcBufferSize );
+	CleanupStack::PushL( pDecodedBuffer );
+
+	sinkBufferSize = theCodec.SinkBufferSize();
+	pSinkBuffer = CMMFDescriptorBuffer::NewL( sinkBufferSize );
+    CleanupStack::PushL( pSinkBuffer );
+
+	pSrcBuffer->Data().SetLength(srcBufferSize);
+	pDecodedBuffer->Data().SetLength(srcBufferSize);
+	pSinkBuffer->Data().SetLength(sinkBufferSize);
+
+	//[ fill src buffer with ramp] 
+	FillSrcBufferL( *pSrcBuffer );
+    // encode and decode the data
+    theCodec.ProcessL(*pSrcBuffer, *pSinkBuffer);
+	theDecoder.ProcessL( *pSinkBuffer, *pDecodedBuffer );
+    
+	if(!CompareResults( KExpectedSNRatioDb, pSrcBuffer, pDecodedBuffer))
+		{
+		//Test has failed because sn ratio was not good enough
+		result = EFail;
+		}
+
+	//[ clean up ]
+	CleanupStack::PopAndDestroy( 5, pHwDevice ); // pHwDevice, pHwDecoder, pSrcBuffer, pDecodedBuffer, pSinkBuffer 
+
+	__MM_HEAP_MARKEND;
+	return result;
+	}
+
+/**
+*
+* DoTestStepPreambleL
+*
+**/
+TVerdict CTestIMaadCodec::DoTestStepPreambleL(void)
+	{
+    return EPass;
+	}
+
+/**
+*
+* DoTestStepPostambleL
+*
+**/
+TVerdict CTestIMaadCodec::DoTestStepPostambleL(void)
+	{
+    return EPass;
+	}
+
+
+/**
+*
+* FillSrcBuffer
+* @param aBuffer
+* This function fills the buffer with a ramp of linear pcm16 data
+*
+**/
+void CTestIMaadCodec::FillSrcBufferL( CMMFDescriptorBuffer& aBuffer )
+	{
+	 TInt slope = 2;
+     TInt dataLength = aBuffer.Data().Length(); 
+	 TUint8* pData = const_cast<TUint8*>(aBuffer.Data().Ptr());
+	 TInt noPc16Samples = dataLength/2;
+	 ASSERT( noPc16Samples*slope < 32768 );
+	 for( TInt16 count = 0; count < noPc16Samples ; count++ )
+		 {
+		 TInt16 pcmSample = static_cast<TInt16>( count * slope);
+          *pData++ = static_cast<TUint8>( pcmSample & 0xFF );
+		  *pData++ = static_cast<TUint8>( ( pcmSample >> 8 ));
+		 }
+	}
+
+/**
+*
+* CompareResults
+* @param aExpectedSNRatioDb
+* @param aSrcBuffer
+* @param aSinkBuffer
+* @result TBool
+* This function returns True if the computed Signal to Noise Ratio
+* is Greater than or equal to the expected signal to noise ratio.
+* The function will also return EFalse if any of the preconditions
+* are violated.
+* @precondition aSrcBuffer, aSinkBuffer are not NULL
+* @precondition aSrcBuffer data lenegth == aSinkBuffer data length
+* @precondition the data buffers contain pcm16 data
+* 
+**/
+TBool CTestIMaadCodec::CompareResults( TReal aExpectedSNRatioDb, 
+			                  CMMFDescriptorBuffer* aSrcBuffer,     
+		                      CMMFDescriptorBuffer* aSinkBuffer)
+	{
+     TBool result = EFalse;
+
+	 //[ precondition pointers are not NULL ]
+	 if( !aSrcBuffer || !aSinkBuffer )
+		 return result;
+
+	 //[ precondition buffer lengths are equal ]
+     TInt length = aSrcBuffer->Data().Length();
+	 if( length != aSinkBuffer->Data().Length() )
+		 return result;
+
+	 // buffers must be of even length
+	 if( !(length % sizeof(TInt16) == 0 ))
+		 return result;
+
+     TInt pcmLength = length/2;
+     TReal sumSignalSquared = 0.0;
+	 TReal sumNoiseSquared  = 0.0;
+     TUint8* pSrcData = const_cast<TUint8*>(aSrcBuffer->Data().Ptr());
+	 TUint8* pDecodeData    = const_cast<TUint8*>(aSinkBuffer->Data().Ptr());
+     TInt16 sampleOriginal;
+	 TInt16 sampleDecode;
+	 for( TInt count = 0; count < pcmLength; count++ )
+		 {
+		  sampleOriginal  = static_cast<TInt16>( pSrcData[0] &KAndMask8bit);  
+		  sampleOriginal |=  static_cast<TInt16>((pSrcData[1] << 8 ));	
+          sampleDecode    = static_cast<TInt16>( pDecodeData[0] &KAndMask8bit);  
+		  sampleDecode   |=  static_cast<TInt16>((pDecodeData[1] << 8 )); 
+          pSrcData+=2;
+		  pDecodeData+= 2;
+		  sumSignalSquared += sampleOriginal * sampleOriginal;
+		  TInt noise = sampleOriginal - sampleDecode ;
+          sumNoiseSquared  += noise * noise;
+		 }
+     
+	 //[ if the noise is low the signals are equivalent and
+	 // overflow can be avoided ]
+	 if( sumNoiseSquared < 0.001 )
+		 {
+		 result = ETrue;
+		 return result;
+		 }
+	 TReal computedSNRatioDb;
+	 Math::Log( computedSNRatioDb, sumSignalSquared/sumNoiseSquared );	 
+	 computedSNRatioDb *= 10;
+
+	 //[ compare claculated s/n ratio against expected ]
+     if( computedSNRatioDb >= aExpectedSNRatioDb )
+		 result = ETrue;
+
+     return result;
+	}