diff -r 000000000000 -r bde4ae8d615e os/mm/mmlibs/mmfw/tsrc/mmfunittest/SwCodecDevices/TSU_MMF_SignConversionCodecs.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/mm/mmlibs/mmfw/tsrc/mmfunittest/SwCodecDevices/TSU_MMF_SignConversionCodecs.cpp	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,984 @@
+// 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:
+// TSU_MMF_CodecTests.cpp
+// 
+//
+
+// EPOC includes
+#include <e32base.h>
+#include <e32math.h>
+#include <f32file.h>
+#include <s32file.h>
+
+// Test system includes
+#include "TSU_MMF_DeviceSuite.h"
+#include "TSU_MMF_SignConversionCodecs.h"
+
+//[ codec includes ]
+#include <mmf/plugin/mmfhwdeviceimplementationuids.hrh>
+#include "MmfPcm16toAlawhwDevice.h"
+#include "MmfALawToPcm16HwDevice.h"
+#include "mmfpcm16toMulawhwdevice.h"
+#include "MmfMuLawToPcm16hwDevice.h"
+#include "mmfpcmS8ToPcmS16HwDevice.h"
+#include "mmfpcmS16PcmS8HwDevice.h"
+#include "mmfpcm16topcmU16BEHwDevice.h"
+#include "mmfpcm16SwapEndianhwdevice.h"
+#include "mmfpcm16ToImaAdpcm.h"
+#include "MmfImaAdpcmtopcm16hwdevice.h"
+#include "MMFpcm16ToPcm16HwDevice.h"
+#include "MMFpcm16ToPcmU8HwDevice.h"
+#include "MMFpcmU8ToPcm16HwDevice.h"
+#include "mmfpcmS16PcmS8HwDevice.h"
+
+
+//[ Codec Unit tests  structure 
+// The unit tests shall use text files
+// for small portions of test data 
+// which should be stored are stored in a simple format
+// containing the relevant parameters for the test
+//]
+class TSignConversionTestParams
+	{	
+public:
+	const TText* iTestName;       // name of the test
+	};
+
+// constant table of parameters for tests
+const TSignConversionTestParams KSignConversionParameters[] =
+	{	
+		{_S("MM-MMF-SWCODECDEVICES-U-0017-HP")},
+		{_S("MM-MMF-SWCODECDEVICES-U-0018-HP")},
+		{_S("MM-MMF-SWCODECDEVICES-U-0019-HP")},
+		{_S("MM-MMF-SWCODECDEVICES-U-0020-HP")}, 
+		{_S("MM-MMF-SWCODECDEVICES-U-0021-HP")}
+	};
+
+/**
+*
+* PrintComparisonDataL
+* @param aCodedData the coded data buffer
+* @param aRefCodedData the reference coded data buffer
+* 
+*/
+void CMMFDataGenerator::PrintComparisonDataL( CMMFDataBuffer& aCodedData, CMMFDataBuffer& aRefCodedData )
+	{
+	//[precondition reference coded data is equal in size or longer than coded data ]
+	if( aRefCodedData.Data().Length() < aCodedData.Data().Length() )
+		{
+         //[coded data is longer than reference data]
+	//	RDebug::Print(_L("Coded Data is longer than refernce data")); Commented under DEF105143
+		User::Leave( KErrCorrupt );	 
+		}
+
+	TUint8* ptr1 = CONST_CAST(TUint8*, aCodedData.Data().Ptr());
+	TUint8* ptr2 = CONST_CAST(TUint8*, aRefCodedData.Data().Ptr());
+    TInt length = aCodedData.Data().Length();
+	//[ now print the results for comparison ]
+	for( TInt i = 0; i < length; i++ )
+		{
+        RDebug::Print( _L("difference: %d, coded: %d, RefCoded: %d"), (*ptr1-*ptr2), *ptr1++, *ptr2++ );
+		} 
+	}
+
+/**
+*
+* AssembleValue
+* @param aData src data buffer 
+* @param aValue resultant value
+* @param aBigEndian whether the value is in BigEndian format
+* @precondition aData is not null and has length >= 2
+*
+*/
+void CMMFDataGenerator::AssembleValue( TUint8* aData, TInt16& aValue, TBool aBigEndian )
+	{
+	__ASSERT_DEBUG( aData, Panic(EBadArgument));
+    if( aBigEndian )
+		{
+		aValue  = static_cast<TInt16>( aData[1] &KAndMask8bit );  
+		aValue |=  static_cast<TInt16>((aData[0] << 8 ));
+		}
+	else
+		{
+		aValue  = static_cast<TInt16>( aData[0] &KAndMask8bit);  
+		aValue |=  static_cast<TInt16>((aData[1] << 8 ));
+		}
+	}
+
+/**
+*
+* AssembleValue
+* @param aData src data buffer 
+* @param aValue resultant value
+* @param aBigEndian whether the value is in BigEndian format
+* @precondition aData is not null and has length >= 2
+*
+*/
+void CMMFDataGenerator::AssembleValue( TUint8* aData, TUint16& aValue, TBool aBigEndian )
+	{
+	__ASSERT_DEBUG( aData, Panic(EBadArgument));
+	if( aBigEndian )
+		{
+		aValue     = aData[1] ; //[ big endian format]
+		aValue    |= (aData[0] << 8 ); 
+		}
+	else
+		{
+		aValue     = aData[0] ; 
+		aValue    |= (aData[1] << 8 ); 
+		}
+	}
+/**
+*
+* CMMFPcmU16toPcmU16BGenerator
+*
+**/
+CMMFPcmU16toPcmU16BGenerator::CMMFPcmU16toPcmU16BGenerator()
+	{
+	}
+
+/**
+*
+* ~CMMFPcmU16toPcmU16BGenerator
+*
+**/
+CMMFPcmU16toPcmU16BGenerator::~CMMFPcmU16toPcmU16BGenerator()
+	{
+	}
+
+/**
+*
+* GenerateSourceDataL
+*
+**/
+void CMMFPcmU16toPcmU16BGenerator::GenerateSourceDataL( CMMFDataBuffer* &aBuffer, TInt aSize )
+	{
+	const TUint16 KScale2 = 32000;
+
+	 //[ create a buffer large enough to fill with the data ]
+	aBuffer = CMMFDescriptorBuffer::NewL(aSize);
+
+	TUint8* pDst = CONST_CAST(TUint8*,aBuffer->Data().Ptr());
+
+	//[ lets fill it with a 400hz signal at approx -3db ]
+	//[encode the data]
+	 TUint16 srcValue = 0;
+	 TReal val   = 0.0;
+	 TReal theta = 0.0; 
+
+	 TInt noSamples = aSize/sizeof(TInt16);
+	 for(TInt i=0; i< noSamples; i++)
+		 {
+		 //[ assign data and place in buffer]
+		  theta = (KPi*i)/10; // fundamental of 400hz sampled @8khz has 20 db or
+		                      // better reproduction through gsm codec
+		  User::LeaveIfError(Math::Sin(val,theta));
+          srcValue = static_cast<TUint16>( (KScale2 * val ) + KScale2+0.5);
+          *pDst++ = static_cast<TUint8>( srcValue &KAndMask8bit);
+		  *pDst++ = static_cast<TUint8>( (srcValue >>8) &KAndMask8bit);
+		 }
+    
+	 aBuffer->Data().SetLength(aSize); 
+	}
+
+/**
+*
+* GenerateComparisonDataL
+*
+**/
+void CMMFPcmU16toPcmU16BGenerator::GenerateComparisonDataL( CMMFDataBuffer* &aBuffer, TInt aSize )
+	{
+	const TUint16 KScale2 = 32000;
+
+	 //[ create a buffer large eneough to fill with the data ]
+	aBuffer = CMMFDescriptorBuffer::NewL(aSize);
+
+	TUint8* pDst = CONST_CAST(TUint8*,aBuffer->Data().Ptr());
+
+	//[ lets fill it with a 400hz signal at approx -3db ]
+	//[encode the data]
+	 TUint16 srcValue = 0;
+	 TReal val   = 0.0;
+	 TReal theta = 0.0; 
+
+	 TInt noSamples = aSize/sizeof(TInt16);
+	 for(TInt i=0; i< noSamples; i++)
+		 {
+		 //[ assign data and place in buffer]
+		  theta = (KPi*i)/10; // fundamental of 400hz sampled @8khz has 20 db or
+		                      // better reproduction through gsm codec
+		  User::LeaveIfError(Math::Sin(val,theta));
+          srcValue = static_cast<TUint16>( (KScale2 * val)+KScale2 +0.5);
+          //[endian swap here ]
+		  *pDst++ = static_cast<TUint8>( (srcValue >>8) &KAndMask8bit);
+		  *pDst++ = static_cast<TUint8>( srcValue &KAndMask8bit);
+		 }
+    
+	 aBuffer->Data().SetLength(aSize); 
+	}
+
+/**
+*
+* PrintComparisonDataL
+* Prints out coded results for comparison with the 
+* Reference values and is used when the results differ
+*
+**/
+void CMMFPcmU16toPcmU16BGenerator::PrintComparisonDataL( CMMFDataBuffer& aCodedData, CMMFDataBuffer& aRefCodedData )
+	{
+	//[precondition reference coded data is equal in size or longer than coded data ]
+	if( aRefCodedData.Data().Length() < aCodedData.Data().Length() )
+		{
+         //[coded data is longer than reference data]
+	//	RDebug::Print( _L("Coded Data is longer than refernce data"));Commented under DEF105143
+		User::Leave( KErrCorrupt );	 
+		}
+
+	//[ now print the results for comparison ]
+    TUint8* ptr1 = CONST_CAST(TUint8*, aCodedData.Data().Ptr());
+	TUint8* ptr2 = CONST_CAST(TUint8*, aRefCodedData.Data().Ptr());
+    TInt length = aCodedData.Data().Length();
+	length /= 2; // [for 16bit words length is half]
+	//[ assert invariant length is even ]
+	__ASSERT_DEBUG( (length % 2 == 0 ), Panic(EBadInvariant));
+
+	TUint16 codedValue = 0;
+	TUint16 refCodedValue = 0;
+	//[ now print the results for comparison ]
+	for( TInt i = 0; i < length; i++ )
+		{
+		//[ assemble 16bit values from buffer values ]    
+		AssembleValue( ptr1, codedValue, ETrue );
+		AssembleValue( ptr2, refCodedValue, ETrue );       
+		RDebug::Print( _L("difference: %u, coded: %u, RefCoded: %u"), (refCodedValue-codedValue), codedValue, refCodedValue );
+		if( i % 100 == 0 ) //deal with debug printf deficiencies
+			{
+			User::After(100 );
+			}
+		ptr1+=2;
+		ptr2+=2;
+		} 
+ 	}
+
+/**
+*
+* CMMFPcmU16BtoPcmU16Generator
+*
+**/
+CMMFPcmU16BtoPcmU16Generator::CMMFPcmU16BtoPcmU16Generator()
+	{
+	}
+
+/**
+*
+* ~CMMFPcmU16BtoPcmU16Generator
+*
+**/
+CMMFPcmU16BtoPcmU16Generator::~CMMFPcmU16BtoPcmU16Generator()
+	{
+	}
+
+/**
+*
+* GenerateSourceDataL
+*
+**/
+void CMMFPcmU16BtoPcmU16Generator::GenerateSourceDataL( CMMFDataBuffer* &aBuffer, TInt aSize )
+	{
+	const TUint8 KScale2 = 127;
+
+	 //[ create a buffer large eneough to fill with the data ]
+	aBuffer = CMMFDescriptorBuffer::NewL(aSize);
+
+	TUint8* pDst = CONST_CAST(TUint8*,aBuffer->Data().Ptr());
+
+	//[ lets fill it with a 400hz signal at approx -3db ]
+	//[encode the data]
+	 TInt8 srcValue = 0;
+	 TReal val   = 0.0;
+	 TReal theta = 0.0; 
+
+	 TInt noSamples = aSize/sizeof(TInt16);
+	 for(TInt i=0; i< noSamples; i++)
+		 {
+		 //[ assign data and place in buffer]
+		  theta = (KPi*i)/10; // fundamental of 400hz sampled @8khz has 20 db or
+		                      // better reproduction through gsm codec
+		  User::LeaveIfError(Math::Sin(val,theta));
+          srcValue = static_cast<TUint8>( (KScale2 * val) );
+          //[endian swap here ]
+		  *pDst++ = static_cast<TUint8>( (srcValue >>8) &KAndMask8bit);
+		  *pDst++ = static_cast<TUint8>( srcValue &KAndMask8bit);
+		 }
+    
+	 aBuffer->Data().SetLength(aSize); 
+	}
+
+/**
+*
+* GenerateComparisonDataL
+*
+**/
+void CMMFPcmU16BtoPcmU16Generator::GenerateComparisonDataL( CMMFDataBuffer* &aBuffer, TInt aSize )
+	{
+	const TUint8 KScale2 = 127;
+
+	 //[ create a buffer large eneough to fill with the data ]
+	aBuffer = CMMFDescriptorBuffer::NewL(aSize);
+
+	TUint8* pDst = CONST_CAST(TUint8*,aBuffer->Data().Ptr());
+
+	//[ lets fill it with a 400hz signal at approx -3db ]
+	//[encode the data]
+	 TUint16 srcValue = 0;
+	 TReal val   = 0.0;
+	 TReal theta = 0.0; 
+	 TInt noSamples = aSize/sizeof(TInt16);
+	 for(TInt i=0; i< noSamples; i++)
+		 {
+		 //[ assign data and place in buffer]
+		  theta = (KPi*i)/10; // fundamental of 400hz sampled @8khz has 20 db or
+		                      // better reproduction through gsm codec
+		  User::LeaveIfError(Math::Sin(val,theta));
+          srcValue = static_cast<TUint16>( KScale2 * val );
+		  *pDst++ = static_cast<TUint8>( srcValue &KAndMask8bit);
+		  *pDst++ = static_cast<TUint8>( (srcValue >>8) &KAndMask8bit);
+		 }
+    
+	 aBuffer->Data().SetLength(aSize); 
+	}
+
+/**
+*
+* PrintComparisonDataL
+* Prints out coded results for comparison with the 
+* Reference values and is used when the results differ
+*
+**/
+void CMMFPcmU16BtoPcmU16Generator::PrintComparisonDataL( CMMFDataBuffer& aCodedData, CMMFDataBuffer& aRefCodedData )
+	{
+	//[precondition reference coded data is equal in size or longer than coded data ]
+	if( aRefCodedData.Data().Length() < aCodedData.Data().Length() )
+		{
+		//[coded data is longer than reference data]
+	//	RDebug::Print( _L("Coded Data is longer than refernce data"));Commented under DEF105143
+		User::Leave( KErrCorrupt );	 
+		}
+	
+	//[ now print the results for comparison ]
+    TUint8* ptr1 = CONST_CAST(TUint8*, aCodedData.Data().Ptr());
+	TUint8* ptr2 = CONST_CAST(TUint8*, aRefCodedData.Data().Ptr());
+    TInt length = aCodedData.Data().Length();
+	length /= 2; //[ for 16bit words ]
+	TUint16 codedValue = 0;
+	TUint16 refCodedValue = 0;
+	//[ now print the results for comparison ]
+	for( TInt i = 0; i < length; i++ )
+		{
+		// assemble 16bit values
+		AssembleValue( ptr1, codedValue, EFalse);
+		AssembleValue( ptr2, refCodedValue, EFalse );        
+		RDebug::Print( _L("difference: %u, coded: %u, RefCoded: %u"), (refCodedValue-codedValue), codedValue, refCodedValue );
+		if( i % 100 == 0 ) //deal with debug printf deficiencies
+			{
+			User::After( 100 );
+			}
+		ptr1+=2;
+		ptr2+=2;
+		} 	
+	}
+
+/**
+*
+* CMMFPcm8ToPcm16Generator
+*
+**/
+CMMFPcm8ToPcm16Generator::CMMFPcm8ToPcm16Generator()
+	{
+	}
+
+/**
+*
+* CMMFPcm8ToPcm16Generator
+*
+**/
+CMMFPcm8ToPcm16Generator::~CMMFPcm8ToPcm16Generator()
+	{
+	}
+
+/**
+*
+* GenerateSourceDataL
+*
+**/
+void CMMFPcm8ToPcm16Generator::GenerateSourceDataL( CMMFDataBuffer* &aBuffer, TInt aSize )
+	{
+	const TInt8 KScale2 = 127;
+
+	 //[ create a buffer large eneough to fill with the data ]
+	aBuffer = CMMFDescriptorBuffer::NewL(aSize);
+
+	TUint8* pDst = CONST_CAST(TUint8*,aBuffer->Data().Ptr());
+
+	//[ lets fill it with a 400hz signal at approx -3db ]
+	//[encode the data]
+	 TInt8 srcValue = 0;
+	 TReal val   = 0.0;
+	 TReal theta = 0.0; 
+     TInt noSamples = aSize/sizeof(TInt8);
+	 for(TInt i=0; i< noSamples; i++)
+		 {
+		 //[ assign data and place in buffer]
+		  theta = (KPi*i)/10; // fundamental of 400hz sampled @8khz has 20 db or
+		                      // better reproduction through gsm codec
+		  User::LeaveIfError(Math::Sin(val,theta));
+          srcValue = static_cast<TInt8>( (KScale2 * val) );
+          *pDst++ = srcValue;
+		 }
+    
+	 aBuffer->Data().SetLength(aSize); 
+	}
+
+/**
+*
+* GenerateSourceDataL
+*
+**/
+void CMMFPcm8ToPcm16Generator::GenerateComparisonDataL( CMMFDataBuffer* &aBuffer, TInt aSize )
+	{
+	const TInt8 KScale2 = 127;
+
+	 //[ create a buffer large eneough to fill with the data ]
+	aBuffer = CMMFDescriptorBuffer::NewL(aSize);
+
+	TUint8* pDst = CONST_CAST(TUint8*,aBuffer->Data().Ptr());
+
+	//[ lets fill it with a 400hz signal at approx -3db ]
+	//[encode the data]
+	 TInt16 srcValue = 0;
+	 TReal val   = 0.0;
+	 TReal theta = 0.0; 
+	 TInt noSamples = aSize/sizeof(TInt16);
+	 for(TInt i=0; i< noSamples; i++)
+		 {
+		 //[ assign data and place in buffer]
+		  theta = (KPi*i)/10; // fundamental of 400hz sampled @8khz has 20 db or
+		                      // better reproduction through gsm codec
+		  User::LeaveIfError(Math::Sin(val,theta));
+		  TInt8 temp = static_cast<TInt8>((KScale2 * val));
+          srcValue =  static_cast<TInt16>( temp << 8); 
+		  *pDst++ = static_cast<TInt8>( srcValue&KAndMask8bit);
+		  *pDst++ = static_cast<TInt8>((srcValue>>8)&KAndMask8bit);
+		 }
+    
+	 aBuffer->Data().SetLength(aSize); 
+	}
+
+/**
+*
+* PrintComparisonDataL
+* Prints out coded results for comparison with the 
+* Reference values and is used when the results differ
+*
+**/
+void CMMFPcm8ToPcm16Generator::PrintComparisonDataL( CMMFDataBuffer& aCodedData, CMMFDataBuffer& aRefCodedData )
+	{
+	//[precondition reference coded data is equal in size or longer than coded data ]
+	if( aRefCodedData.Data().Length() < aCodedData.Data().Length() )
+		{
+		//[coded data is longer than reference data]
+	//	RDebug::Print( _L("Coded Data is longer than refernce data"));Commented under DEF105143
+		User::Leave( KErrCorrupt );	 
+		}
+	
+	//[ now print the results for comparison ]
+    TUint8* ptr1 = CONST_CAST(TUint8*, aCodedData.Data().Ptr());
+	TUint8* ptr2 = CONST_CAST(TUint8*, aRefCodedData.Data().Ptr());
+    TInt length = aCodedData.Data().Length();
+	length /= 2; //[ for 16bit words ]
+	TInt16 codedValue = 0;
+	TInt16 refCodedValue = 0;
+	//[ now print the results for comparison ]
+	for( TInt i = 0; i < length; i++ )
+		{
+		// assemble 16bit values
+  		AssembleValue( ptr1, codedValue, EFalse );
+		AssembleValue( ptr2, refCodedValue, EFalse );        
+		RDebug::Print( _L("difference: %d, coded: %d, RefCoded: %d"), (refCodedValue-codedValue), codedValue, refCodedValue );
+		if( i % 100 == 0 ) //deal with debug printf deficiencies
+			{
+			User::After(100 );
+			}
+		ptr1+=2;
+		ptr2+=2;
+		} 	
+	}
+
+/**
+*
+* CMMFPcmU8ToPcm16Generator
+*
+**/
+CMMFPcmU8ToPcm16Generator::CMMFPcmU8ToPcm16Generator()
+	 {
+	 }
+
+/**
+*
+* ~CMMFPcmU8ToPcm16Generator
+*
+**/
+CMMFPcmU8ToPcm16Generator::~CMMFPcmU8ToPcm16Generator()
+	 {
+	 }
+
+/**
+*
+* GenerateSourceDataL
+* @param aBuffer
+* @param aSize in bytes
+*
+**/
+void CMMFPcmU8ToPcm16Generator::GenerateSourceDataL( CMMFDataBuffer* &aBuffer, TInt aSize )
+	 {
+	 const TUint8 KScale2 = 127;
+
+	 //[ create a buffer large eneough to fill with the data ]
+	aBuffer = CMMFDescriptorBuffer::NewL(aSize);
+
+	TUint8* pDst = CONST_CAST(TUint8*,aBuffer->Data().Ptr());
+
+	//[ lets fill it with a 400hz signal at approx -3db ]
+	//[encode the data]
+	 TUint8 srcValue = 0;
+	 TReal val   = 0.0;
+	 TReal theta = 0.0; 
+	 TInt noSamples = aSize/sizeof(TUint8);
+	 for(TInt i=0; i< noSamples; i++)
+		 {
+		 //[ assign data and place in buffer]
+		  theta = KPi*i/10; // fundamental of 400hz sampled @8khz has 20 db or
+		                      // better reproduction through gsm codec
+		  User::LeaveIfError(Math::Sin(val,theta));
+
+          srcValue = static_cast<TUint8>((KScale2 * val+KScale2+0.5));
+          *pDst++ = srcValue;
+		   //RDebug::Print( _L("U8 = %u"), srcValue );  Statement commented under DEf105143
+		 }
+    
+	 aBuffer->Data().SetLength(aSize); 
+	 }
+
+/**
+*
+* GenerateComparisonDataL
+* @param aBuffer
+* @param aSize
+*
+**/
+void CMMFPcmU8ToPcm16Generator::GenerateComparisonDataL( CMMFDataBuffer* &aBuffer, TInt aSize )
+	{
+	const TInt8 KScale2 = 127;
+	
+	//[ create a buffer large eneough to fill with the data ]
+	aBuffer = CMMFDescriptorBuffer::NewL(aSize);
+	
+	TUint8* pDst = CONST_CAST(TUint8*,aBuffer->Data().Ptr());
+	
+	//[ lets fill it with a 400hz signal at approx -3db ]
+	//[encode the data]
+//	RDebug::Print( _L("Generation"));Commented under DEF105143
+	TUint8 theValue = 0;
+	TReal val   = 0.0;
+	TReal theta = 0.0; 
+	TUint8 rrr  = 0;
+	TInt length = aSize/sizeof(TInt16);
+	for(TInt i=0; i< length; i++)
+		{
+		//[ assign data and place in buffer]
+		theta = KPi*i/10; // fundamental of 400hz sampled @8khz has 20 db or
+		// better reproduction through gsm codec
+		User::LeaveIfError(Math::Sin(val,theta));
+		theValue = static_cast<TUint8>(KScale2 *val + KScale2 + 0.5); 
+		//[ apply the same transformation as the codec ]
+		rrr = static_cast<TUint8>( theValue^KMaskSign8bit );
+		//RDebug::Print( _L("U8 = %u"), theValue ); Statement commented under DEf105143
+		*pDst++ = rrr;
+		*pDst++ = rrr;
+		}
+    
+	aBuffer->Data().SetLength(aSize); 
+	}
+
+/**
+*
+* PrintComparisonDataL
+* Prints out coded results for comparison with the 
+* Reference values and is used when the results differ
+*
+**/
+void CMMFPcmU8ToPcm16Generator::PrintComparisonDataL( CMMFDataBuffer& aCodedData, CMMFDataBuffer& aRefCodedData )
+	{
+	//[precondition reference coded data is equal in size or longer than coded data ]
+	if( aRefCodedData.Data().Length() < aCodedData.Data().Length() )
+		{
+		//[coded data is longer than reference data]
+	//	RDebug::Print( _L("Coded Data is longer than reference data"));Commented under DEF105143
+		User::Leave( KErrCorrupt );	 
+		}
+	
+	//[ now print the results for comparison ]
+    TUint8* ptr1 = CONST_CAST(TUint8*, aCodedData.Data().Ptr());
+	TUint8* ptr2 = CONST_CAST(TUint8*, aRefCodedData.Data().Ptr());
+    TInt length = aCodedData.Data().Length();
+	length /= 2; //[ for 16bit words ]
+	TInt16 codedValue = 0;
+	TInt16 refCodedValue = 0;
+	//[ now print the results for comparison ]
+	for( TInt i = 0; i < length; i++ )
+		{
+		// assemble 16bit values
+  		AssembleValue( ptr1, codedValue, EFalse );
+		AssembleValue( ptr2, refCodedValue, EFalse );        
+		RDebug::Print( _L("delta %d c %d, rf %d"), (refCodedValue-codedValue), codedValue, refCodedValue );
+		if( i % 100 == 0 ) //deal with debug printf deficiencies
+			{
+			User::After(100 );
+			}
+		ptr1+=2;
+		ptr2+=2;
+		} 
+
+	}
+
+/**
+*
+* CMMFPcm16ToPcmU8Generator
+*
+**/
+CMMFPcm16ToPcmU8Generator::CMMFPcm16ToPcmU8Generator()
+	{
+     //Nothing doing
+	}
+
+/**
+*
+* CMMFPcm16ToPcmU8Generator
+*
+**/
+CMMFPcm16ToPcmU8Generator::~CMMFPcm16ToPcmU8Generator()
+	{
+     //Nothing doing
+	}
+
+/**
+*
+* GenerateSourceDataL
+* @param aBuffer
+* @param aSize in bytes
+* This function generates a 400hz sine wav
+* under the assumption the sampling frequency is 8khz
+*
+*/
+void CMMFPcm16ToPcmU8Generator::GenerateSourceDataL( CMMFDataBuffer* &aBuffer, TInt aSize )
+	{
+	const TInt KScale = 320;
+
+	 //[ create a buffer large eneough to fill with the data ]
+	aBuffer = CMMFDescriptorBuffer::NewL(aSize);
+
+	TUint8* pDst = CONST_CAST(TUint8*,aBuffer->Data().Ptr());
+
+	//[ lets fill it with a 400hz signal at approx -3db ]
+	//[encode the data]
+	 TInt16 srcValue = 0;
+	 TReal val   = 0.0;
+	 TReal theta = 0.0; 
+	 TInt noSamples = aSize/sizeof(TInt16);
+	 for(TInt i=0; i< noSamples; i++)
+		 {
+		 //[ assign data and place in buffer]
+		  theta = (KPi*i)/10; // fundamental of 400hz sampled @8khz has 20 db or
+		                      // better reproduction through gsm codec
+		  User::LeaveIfError(Math::Sin(val,theta));
+          srcValue = static_cast<TInt16>( KScale * val );
+          *pDst++ = static_cast<TUint8>( srcValue & KAndMask8bit);
+		  *pDst++ = static_cast<TUint8>((srcValue >> 8) & KAndMask8bit );
+		 }
+    
+	 aBuffer->Data().SetLength(aSize); 
+	}
+
+/**
+*
+* GenerateComparisonDataL
+* @param aBuffer
+* @param aSize in bytes
+* This function generates a 400hz sine wav
+* under the assumption the sampling frequency is 8khz
+*/
+//[ use partial sopecialization to provide copncrete implmentation]
+void CMMFPcm16ToPcmU8Generator::GenerateComparisonDataL( CMMFDataBuffer* &aBuffer, TInt aSize )
+	{
+	const TInt KScale2 = 320; //low value chosen to emphasize the distortion of this codec!
+
+	 //[ create a buffer large eneough to fill with the data ]
+	aBuffer = CMMFDescriptorBuffer::NewL(aSize);
+
+	TUint8* pDst = CONST_CAST(TUint8*,aBuffer->Data().Ptr());
+
+	//[ lets fill it with a 400hz signal at approx -3db ]
+	//[encode the data]
+	 TInt16 srcValue = 0;
+	 TReal val   = 0.0;
+	 TReal theta = 0.0; 
+	 TInt noSamples = aSize/sizeof(TUint8);
+	 for(TInt i=0; i< noSamples; i++)
+		 {
+		 //[ assign data and place in buffer]
+		  theta = (KPi*i)/10; // fundamental of 400hz sampled @8khz has 20 db or
+		                      // better reproduction through gsm codec
+		  User::LeaveIfError(Math::Sin(val,theta));
+          srcValue = static_cast<TInt16>( KScale2 * val );
+          *pDst++ = static_cast<TUint8>( (srcValue >> 8) - KMaskSign8bit);
+		 }
+    
+	 aBuffer->Data().SetLength(aSize); 
+	}
+
+/**
+*
+* PrintComparisonDataL
+* Prints out coded results for comparison with the 
+* Reference values and is used when the results differ
+*
+**/
+void CMMFPcm16ToPcmU8Generator::PrintComparisonDataL( CMMFDataBuffer& aCodedData, CMMFDataBuffer& aRefCodedData )
+	{
+	//[precondition reference coded data is equal in size or longer than coded data ]
+	if( aRefCodedData.Data().Length() < aCodedData.Data().Length() )
+		{
+         //[coded data is longer than reference data]
+	//	RDebug::Print( _L("Coded Data is longer than refernce data"));Commented under DEF105143
+		User::Leave( KErrCorrupt );	 
+		}
+
+	//[ now print the results for comparison ]
+    TUint8* ptr1 = CONST_CAST(TUint8*, aCodedData.Data().Ptr());
+	TUint8* ptr2 = CONST_CAST(TUint8*, aRefCodedData.Data().Ptr());
+    TInt length = aCodedData.Data().Length();
+	//[ now print the results for comparison ]
+	for( TInt i = 0; i < length; i++ )
+		{
+		RDebug::Print( _L("difference: %u, coded: %u, RefCoded: %u"), (*ptr1-*ptr2), *ptr1, *ptr2 );
+		if( i % 100 == 0 ) //deal with debug printf deficiencies
+			{
+			User::After(100 );
+			}
+		ptr1++;
+		ptr2++;
+		} 
+	}
+
+/**
+*
+* CompareData
+* @param aData1 first data buffer for comparison
+* @param aData2 second data buffer for comparison
+* result TBool data is the same
+* @precondition aData1 has the same amount of data as aData2
+*
+*/
+template <class T, class Generator, TInt index>
+TBool CTestStepSignConversionTest<T, Generator, index>::CompareData( CMMFDataBuffer* aData1, CMMFDataBuffer* aData2)
+	{
+	TBool result = ETrue;
+
+	//[ precondition aData1 != NULL ]
+	if( !aData1 )
+		{
+		User::Leave( KErrArgument );
+		}
+
+    //[ precondition aData2 != NULL ]
+	if( !aData2 )
+		{
+		User::Leave( KErrArgument );
+		}
+
+    //[precondition aData1 length == aData2 length ]
+	if( aData1->Data().Length() != aData2->Data().Length() )
+		{
+		User::Leave( KErrArgument );
+		}
+
+	//[Now Compare the data]
+	TUint8* ptr1 = CONST_CAST(TUint8*, aData1->Data().Ptr());
+	TUint8* ptr2 = CONST_CAST(TUint8*, aData2->Data().Ptr());
+	TInt dataLength = aData2->Data().Length();
+   	if( Mem::Compare( ptr1, dataLength, ptr2, dataLength )!=0)
+		{
+		TUint8* p1 = ptr1; 
+        TUint8* p2 = ptr2;
+		TInt16 s1  = 0;
+		TInt16 s2  = 0;
+		INFO_PRINTF1(_L("------------------------------"));
+		for( TInt i = 0; i < dataLength/2; i++ )
+			{
+		    s1  = static_cast<TInt16>( p1[0] &KAndMask8bit);  
+		    s1 |=  static_cast<TInt16>((p1[1] << 8 ));
+		    s2  = static_cast<TInt16>( p2[0] &KAndMask8bit);  
+		    s2 |=  static_cast<TInt16>((p2[1] << 8 ));
+			INFO_PRINTF3(_L("%d  %d"), s1, s2);
+			p1+=2;
+			p2+=2;
+			}
+		INFO_PRINTF1(_L("------------------------------"));
+	//	RDebug::Print( _L("Comparison has failed")); Commented under DEF105143
+		iGenerator->PrintComparisonDataL( *aData1, *aData2 );
+		result = EFalse ;
+		}
+	return result;
+	}
+
+/**
+*
+* DoTestStepL
+* @result TVerdict
+*
+*/
+template <class T, class Generator, TInt index>
+TVerdict CTestStepSignConversionTest<T, Generator, index>::DoTestStepL()
+	{
+	__MM_HEAP_MARK;	
+	TVerdict result = EPass;
+
+	//[pre condition iSourceData ]
+	if( !iSourceData )
+		{
+		INFO_PRINTF1(_L("Source Data Failure"));
+		User::Leave( KErrCorrupt);
+		}
+	//[precondition iCodedData  ]
+	if( !iCodedData )
+		{
+		INFO_PRINTF1(_L("Coded Data Failure"));
+		User::Leave( KErrCorrupt);
+		}
+	//[precondition iRefData ]
+	if( !iRefCodedData )
+		{
+		INFO_PRINTF1(_L("RefCodedData Argument Failure"));
+		User::Leave( KErrCorrupt);
+		}
+
+	//[ lets code the data and compare it to the reference data ]
+    iCodecUnderTest->ProcessL(*iSourceData, *iCodedData);
+    if(!CompareData(iCodedData, iRefCodedData))
+		{
+		INFO_PRINTF1(_L("Coded Results do not match reference coded results"));
+
+		result = EFail;
+		}
+	
+	__MM_HEAP_MARKEND;
+	return result;
+	}
+
+/**
+*
+* DoTestStepPostambleL
+* @result TVerdict
+*
+*/
+template <class T, class Generator, TInt index>
+TVerdict CTestStepSignConversionTest<T, Generator, index>::DoTestStepPostambleL()
+	{
+	TVerdict result = EPass;	
+	//[delete the buffers & Codec]
+	delete iCodecUnderTest;
+	delete iGenerator;
+	delete iSourceData;
+	delete iCodedData;
+	delete iRefCodedData;
+	return result;
+	}
+
+/**
+*
+* DoTestStepPreambleL
+* @result TVerdict
+*
+*/
+template <class T, class Generator, TInt index>
+TVerdict CTestStepSignConversionTest<T, Generator, index>::DoTestStepPreambleL()
+	{
+	TVerdict result = EPass;
+
+	iCodecUnderTest =  new(ELeave) T;   // a cmmfcodec ;
+	iGenerator = new(ELeave) Generator; // src generator
+
+  	//[ensure the number of samples is >= srcbuffers]
+	const TInt KNumBuffers = 2;
+	const TInt dataSrcSize = KNumBuffers *  iCodecUnderTest->SourceBufferSize();
+
+	//[generate src data]
+	iGenerator->GenerateSourceDataL( iSourceData, dataSrcSize);
+	
+	const TInt dataSinkSize = KNumBuffers *  iCodecUnderTest->SinkBufferSize();
+
+	//[generate comparison data]
+	iGenerator->GenerateComparisonDataL( iRefCodedData, dataSinkSize);
+
+	//[reserve space for coded data ]
+    iCodedData = CMMFDescriptorBuffer::NewL(dataSinkSize);
+
+	return result;
+	}
+
+/**
+*
+* CTestStepCodecUnitTest
+*
+*/
+template <class T, class Generator, TInt index>
+CTestStepSignConversionTest<T, Generator, index>::CTestStepSignConversionTest()
+	{
+	// store the name of this test case
+	// this is the name that is used by the script file
+	iTestStepName = (&KSignConversionParameters[index])->iTestName;
+	}
+
+/**
+*
+* CTestStepCodecUnitTest
+*
+*/
+template <class T, class Generator, TInt index>
+CTestStepSignConversionTest<T, Generator, index>::~CTestStepSignConversionTest()
+	{
+	}
+
+/**
+*
+* This is used for template instantiation.
+*
+**/
+
+template class CTestStepSignConversionTest<CMMFPcm16ToPcmU8Codec,CMMFPcm16ToPcmU8Generator,0>;
+template class CTestStepSignConversionTest<CMMFPcm8ToPcm16Codec,CMMFPcm8ToPcm16Generator,1>;
+template class CTestStepSignConversionTest<CMMFPcm16SwapEndianCodec,CMMFPcmU16toPcmU16BGenerator,2>;
+template class CTestStepSignConversionTest<CMMFPcm16SwapEndianCodec,CMMFPcmU16BtoPcmU16Generator,3>;
+template class CTestStepSignConversionTest<CMMFPcmU8ToPcm16Codec,CMMFPcmU8ToPcm16Generator,4>;
+