// 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>;