Symaptic: os/mm/mmlibs/mmfw/tsrc/mmfunittest/SwCodecDevices/TSU_MMF_SWCODECDEVICES.cpp@260cb5ec6c19 (annotated)

sl@0	1	// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0	2	// All rights reserved.
sl@0	3	// This component and the accompanying materials are made available
sl@0	4	// under the terms of "Eclipse Public License v1.0"
sl@0	5	// which accompanies this distribution, and is available
sl@0	6	// at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0	7	//
sl@0	8	// Initial Contributors:
sl@0	9	// Nokia Corporation - initial contribution.
sl@0	10	//
sl@0	11	// Contributors:
sl@0	12	//
sl@0	13	// Description:
sl@0	14	//
sl@0	15
sl@0	16	// EPOC includes
sl@0	17	#include <e32base.h>
sl@0	18	#include <e32math.h>
sl@0	19	#include "types.h"
sl@0	20	#include "gsm610fr.h"
sl@0	21	#include "MMFAudioCodecBase.h"
sl@0	22
sl@0	23	// Test system includes
sl@0	24	#include "TSU_MMF_SWCODECDEVICES.h"
sl@0	25	#include "TSU_MMF_SwCodecDevices_BufferSizes.h"
sl@0	26	#include "TSU_MMF_DeviceSuite.h"
sl@0	27	#include "MMFAudioSPcm16ToALawCodec.h"
sl@0	28	#include "MMFAudioALawToS16PcmCodec.h"
sl@0	29	#include "MMFAudioMuLawToS16PcmCodec.h"
sl@0	30	#include "MMFAudioSPcm16ToMuLawCodec.h"
sl@0	31	#include "mmfpcm16ToImaAdpcm.h"
sl@0	32	#include "MmfImaAdpcmtopcm16hwdevice.h"
sl@0	33	#include "GSM610.H"
sl@0	34
sl@0	35	/**
sl@0	36	*
sl@0	37	* CTestStep_MMF_SwCodecDevices
sl@0	38	*
sl@0	39	**/
sl@0	40	CTestStep_MMF_SwCodecDevices::CTestStep_MMF_SwCodecDevices()
sl@0	41	{
sl@0	42	iHeapSize = 300000;
sl@0	43	}
sl@0	44
sl@0	45	/**
sl@0	46	*
sl@0	47	* ~CTestStep_MMF_SwCodecDevices
sl@0	48	*
sl@0	49	*/
sl@0	50	CTestStep_MMF_SwCodecDevices::~CTestStep_MMF_SwCodecDevices()
sl@0	51	{
sl@0	52	}
sl@0	53
sl@0	54	/**
sl@0	55	*
sl@0	56	* SetSuite
sl@0	57	* @param aPtr ref to the test suite
sl@0	58	*
sl@0	59	**/
sl@0	60	void CTestStep_MMF_SwCodecDevices::SetSuite( CTestSuite_MMF_SwCodecDevices* aPtr )
sl@0	61	{
sl@0	62	iRefSuite = aPtr;
sl@0	63	}
sl@0	64	/**
sl@0	65	*
sl@0	66	* GetSuite
sl@0	67	* @return CTestSuite_MMF_SwCodecDevices*
sl@0	68	*
sl@0	69	**/
sl@0	70	CTestSuite_MMF_SwCodecDevices* CTestStep_MMF_SwCodecDevices::GetSuite()
sl@0	71	{
sl@0	72	return iRefSuite;
sl@0	73	}
sl@0	74	/**
sl@0	75	*
sl@0	76	* CTest_MMF_Gsm610
sl@0	77	*
sl@0	78	*/
sl@0	79	CTest_MMF_Gsm610::CTest_MMF_Gsm610()
sl@0	80	{
sl@0	81
sl@0	82	}
sl@0	83
sl@0	84	/**
sl@0	85	*
sl@0	86	* CTest_MMF_SwCodecDevices_U_0001
sl@0	87	*
sl@0	88	*/
sl@0	89	CTest_MMF_SwCodecDevices_U_0001::CTest_MMF_SwCodecDevices_U_0001()
sl@0	90	{
sl@0	91	// store the name of this test case
sl@0	92	// this is the name that is used by the script file
sl@0	93	iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0001-HP");
sl@0	94	}
sl@0	95
sl@0	96	/**
sl@0	97	*
sl@0	98	* CTest_MMF_SwCodecDevices_U_0001
sl@0	99	*
sl@0	100	**/
sl@0	101	CTest_MMF_SwCodecDevices_U_0001::~CTest_MMF_SwCodecDevices_U_0001()
sl@0	102	{
sl@0	103
sl@0	104	}
sl@0	105	/**
sl@0	106	*
sl@0	107	*
sl@0	108	* ~CTest_MMF_Gsm610
sl@0	109	*
sl@0	110	*/
sl@0	111	CTest_MMF_Gsm610::~CTest_MMF_Gsm610()
sl@0	112	{
sl@0	113	// nothing to do ..
sl@0	114	}
sl@0	115
sl@0	116	/**
sl@0	117	*
sl@0	118	*
sl@0	119	* DoTestStepL
sl@0	120	*
sl@0	121	*/
sl@0	122	TVerdict CTest_MMF_SwCodecDevices_U_0001::DoTestStepL()
sl@0	123	{
sl@0	124	__MM_HEAP_MARK;
sl@0	125	TVerdict result = EPass ;
sl@0	126
sl@0	127	CMmfGsm610ToPcm16HwDevice* pDecoder = CMmfGsm610ToPcm16HwDevice::NewL();
sl@0	128	CleanupStack::PushL(pDecoder);
sl@0	129
sl@0	130	// do the same for the inverse operation
sl@0	131	CMmfPcm16ToGsm610HwDevice* pEncoder = CMmfPcm16ToGsm610HwDevice::NewL();
sl@0	132	CleanupStack::PushL(pEncoder);
sl@0	133	CMMFSwCodec& theEncode = pEncoder->Codec();
sl@0	134
sl@0	135	//[ create buffers of the appropriate size ]
sl@0	136	const TInt srcBufferSize = theEncode.SourceBufferSize();
sl@0	137	const TInt sinkBufferSize = theEncode.SinkBufferSize();
sl@0	138	const TInt codedBufferSize = 764 KNumFramesInABuffer; // number of coded buffers * size of coded buffer 63*2
sl@0	139	iNumCodedFrames = KNumFramesInABuffer; //XXX claculate these constants soon <GK>
sl@0	140
sl@0	141	iScratchData = CMMFDescriptorBuffer::NewL( codedBufferSize);
sl@0	142
sl@0	143	//[ pcm data buffers ]
sl@0	144	iRefSrcData = CMMFDescriptorBuffer::NewL( srcBufferSize );
sl@0	145	iDecodedData = CMMFDescriptorBuffer::NewL( srcBufferSize );
sl@0	146
sl@0	147	//[ coded data buffers ]
sl@0	148	iRefCodedData = CMMFDescriptorBuffer::NewL( sinkBufferSize );
sl@0	149	iRefDecodedData = CMMFDescriptorBuffer::NewL( sinkBufferSize );
sl@0	150	iCodedData = CMMFDescriptorBuffer::NewL( sinkBufferSize );
sl@0	151
sl@0	152	//[ for now process only the first few buffers
sl@0	153	// and encode the data]
sl@0	154	INFO_PRINTF1(_L("Encoding Frame..."));
sl@0	155	TInt srcFileSize = 0;
sl@0	156	iSrcFile.Size( srcFileSize);
sl@0	157	TInt buffLen =iRefSrcData->Data().MaxLength();
sl@0	158	TInt numBuffers = srcFileSize/buffLen;
sl@0	159	if( numBuffers > 4 ) // [ not all buffers are processed without error
sl@0	160	// and this is the intention probably of the test sequences]
sl@0	161	numBuffers = 4;
sl@0	162	TInt badBufferCount = 0;
sl@0	163	TInt goodBufferCount = 0;
sl@0	164
sl@0	165	for( TInt bufferCount = 0; bufferCount < numBuffers; bufferCount++ )
sl@0	166	{
sl@0	167	//[precondition pointers are ok]
sl@0	168	ReadDataBufferL(iSrcFile, *iRefSrcData );
sl@0	169
sl@0	170	ParseCodedDataL(iRefCodedData);
sl@0	171
sl@0	172	CMMFSwCodec::TCodecProcessResult encodeRes = theEncode.ProcessL( iRefSrcData, iCodedData );
sl@0	173	if( encodeRes != CMMFSwCodec::TCodecProcessResult::EProcessComplete )
sl@0	174	{
sl@0	175	INFO_PRINTF1( _L("Error Failed to complete coding") );
sl@0	176	return EFail;
sl@0	177	}
sl@0	178
sl@0	179	//[ compare results ]
sl@0	180	if( !CompareEncodeResults( iCodedData, iRefCodedData ) )
sl@0	181	{
sl@0	182	result = EFail;
sl@0	183	badBufferCount++;
sl@0	184	}
sl@0	185	else
sl@0	186	{
sl@0	187	goodBufferCount++;
sl@0	188	}
sl@0	189
sl@0	190	}
sl@0	191
sl@0	192	//[ log number of good buffers & number of bad buffers ]
sl@0	193	INFO_PRINTF4(_L("Good Buffers %d, Bad Buffers %d, Total Buffers %d"),
sl@0	194	goodBufferCount, badBufferCount, badBufferCount+goodBufferCount );
sl@0	195
sl@0	196	//[pop data from the cleanup stack ]
sl@0	197	CleanupStack::PopAndDestroy(2, pDecoder); //pDecoder, theCodec
sl@0	198
sl@0	199	delete iRefSrcData; // reference source data
sl@0	200	iRefSrcData = NULL;
sl@0	201	delete iRefCodedData; //reference coded data
sl@0	202	iRefCodedData = NULL;
sl@0	203	delete iRefDecodedData; // reference decoded data
sl@0	204	iRefDecodedData = NULL;
sl@0	205	delete iCodedData; // buffer of coded data
sl@0	206	iCodedData = NULL;
sl@0	207	delete iDecodedData; // buffer of actual decoded data
sl@0	208	iDecodedData = NULL;
sl@0	209	delete iScratchData; // scratch data buffer
sl@0	210	iScratchData = NULL;
sl@0	211
sl@0	212	__MM_HEAP_MARKEND;
sl@0	213
sl@0	214	return result;
sl@0	215	}
sl@0	216
sl@0	217	/**
sl@0	218	*
sl@0	219	* ParseCodedDataL
sl@0	220	*
sl@0	221	*/
sl@0	222	void CTest_MMF_Gsm610::ParseCodedDataL( CMMFDataBuffer* aBuffer )
sl@0	223	{
sl@0	224	codes frame0;
sl@0	225	codes frame1;
sl@0	226
sl@0	227	//[ read all the coded data into the scratch buffer from reference file ]
sl@0	228	ReadDataBufferL( iCodedFile, *iScratchData );
sl@0	229	TUint8* dest = const_cast<TUint8*>(aBuffer->Data().Ptr());
sl@0	230	TUint8* src = const_cast<TUint8*>(iScratchData->Data().Ptr());
sl@0	231
sl@0	232	//[ for all the coded frames parse these frames to proper coded form ]
sl@0	233	for( TInt count = 0; count < iNumCodedFrames; count++ )
sl@0	234	{
sl@0	235	// parse data to frame
sl@0	236	ParseFrameL( frame0, src );
sl@0	237	ParseFrameL( frame1, src );
sl@0	238	//[ finally pack the two frames into the coded data buffer ]
sl@0	239	PackFrame0( &frame0, reinterpret_cast<TInt8*>(dest) );
sl@0	240	PackFrame1( &frame1, reinterpret_cast<TInt8*>(dest) );
sl@0	241	dest+= KGsmFrameSize;
sl@0	242	}
sl@0	243
sl@0	244	aBuffer->Data().SetLength(KGsmFrameSize*iNumCodedFrames);
sl@0	245	}
sl@0	246	/**
sl@0	247	*
sl@0	248	* ParseFrame
sl@0	249	* @param aFrame this stores the gsm frame in an unpacked structure
sl@0	250	* @param aBuffer this contains the reference file data as 76 words
sl@0	251	*
sl@0	252	*/
sl@0	253	void CTest_MMF_Gsm610::ParseFrameL( struct codes& aFrame, TUint8* &aSrc )
sl@0	254	{
sl@0	255	for(TInt i = 0; i < 8; i++ )
sl@0	256	{
sl@0	257	aFrame.LARc[i] = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
sl@0	258	aFrame.LARc[i] \|= static_cast<TInt16>(*aSrc++ << 8 );
sl@0	259	}
sl@0	260
sl@0	261	for( TInt j = 0; j < 4; j++ )
sl@0	262	{
sl@0	263	aFrame.sfc[j].Nc = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
sl@0	264	aFrame.sfc[j].Nc \|= static_cast<TInt16>(*aSrc++ << 8 );
sl@0	265	aFrame.sfc[j].bc = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
sl@0	266	aFrame.sfc[j].bc \|= static_cast<TInt16>(*aSrc++ << 8 );
sl@0	267	aFrame.sfc[j].Mc = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
sl@0	268	aFrame.sfc[j].Mc \|= static_cast<TInt16>(*aSrc++ << 8 );
sl@0	269	aFrame.sfc[j].xmaxc = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
sl@0	270	aFrame.sfc[j].xmaxc \|= static_cast<TInt16>(*aSrc++ << 8 );
sl@0	271
sl@0	272	for( TInt k = 0; k < 13; k++ )
sl@0	273	{
sl@0	274	aFrame.sfc[j].xMc[k] = static_cast<TInt16> (*aSrc++ &KAndMask8bit );
sl@0	275	aFrame.sfc[j].xMc[k] \|= static_cast<TInt16>(*aSrc++ << 8 );
sl@0	276	}
sl@0	277
sl@0	278	}
sl@0	279
sl@0	280	}
sl@0	281
sl@0	282	/**
sl@0	283	*
sl@0	284	* DoTestStepPreambleL
sl@0	285	*
sl@0	286	*/
sl@0	287	enum TVerdict CTest_MMF_SwCodecDevices_U_0001::DoTestStepPreambleL(void)
sl@0	288	{
sl@0	289	TVerdict result = EPass;
sl@0	290	//[ connect to the file server ]
sl@0	291	User::LeaveIfError( iFs.Connect());
sl@0	292
sl@0	293	//[ read the ref source data ]
sl@0	294	if(!GetStringFromConfig(_L("SectionOne"), _L("SourceData01"), iSourceDataFile) \|\|
sl@0	295	!GetStringFromConfig(_L("SectionOne"), _L("CodedData01"), iCodedDataFile) \|\|
sl@0	296	!GetStringFromConfig(_L("SectionOne"), _L("DecodedData01"), iDecodedDataFile) )
sl@0	297	{
sl@0	298	return EInconclusive;
sl@0	299	}
sl@0	300
sl@0	301	//[ open the data files]
sl@0	302	OpenFileL(iSrcFile,iSourceDataFile );
sl@0	303	OpenFileL(iCodedFile,iCodedDataFile );
sl@0	304	OpenFileL(iDecodeFile,iDecodedDataFile);
sl@0	305	return result;
sl@0	306	}
sl@0	307
sl@0	308	/**
sl@0	309	*
sl@0	310	* CompareCodedResults
sl@0	311	* @param aEncodedFrame
sl@0	312	* @param aRefFrame
sl@0	313	* @result TBool
sl@0	314	*
sl@0	315	*/
sl@0	316	TBool CTest_MMF_Gsm610::CompareEncodeResults( CMMFDataBuffer* aEncoded, CMMFDataBuffer* aRefFrame )
sl@0	317	{
sl@0	318	TBool result = ETrue;
sl@0	319
sl@0	320	//[precondition no encoded frames == refframes ]
sl@0	321	__ASSERT_DEBUG(aEncoded,Panic(EBadArgument));
sl@0	322	__ASSERT_DEBUG(aRefFrame,Panic(EBadArgument));
sl@0	323
sl@0	324	TInt upperLimit = aEncoded->Data().Length()/KGsmFrameSize;
sl@0	325
sl@0	326	const CMMFDataBuffer* encoded = STATIC_CAST(const CMMFDataBuffer*, aEncoded);
sl@0	327	const CMMFDataBuffer* reference = STATIC_CAST(CMMFDataBuffer*, aRefFrame);
sl@0	328
sl@0	329	TUint8* pFrames = CONST_CAST(TUint8*,encoded->Data().Ptr());
sl@0	330	TUint8* pRefFrames = CONST_CAST(TUint8*,reference->Data().Ptr());
sl@0	331
sl@0	332	TInt badFrameCount = 0;
sl@0	333	TInt goodFrameCount = 0;
sl@0	334
sl@0	335	//[ for all frames ]
sl@0	336	for( TInt index = 0; index < upperLimit; index++ )
sl@0	337	{
sl@0	338	//[ compare src and ref frame]
sl@0	339	if( !CompareGsm610Frames( pFrames, pRefFrames ))
sl@0	340	{
sl@0	341	result = EFalse;
sl@0	342	badFrameCount++;
sl@0	343	INFO_PRINTF2(_L("Bad Frame Number: %d"), index );
sl@0	344	}
sl@0	345	else{
sl@0	346	goodFrameCount++;
sl@0	347	}
sl@0	348
sl@0	349	//[ increment frame pointers by size of gsmencoded frame
sl@0	350	pFrames += KGsmFrameSize;
sl@0	351	pRefFrames += KGsmFrameSize;
sl@0	352	}
sl@0	353
sl@0	354	//[ log number of good frames & number of bad frames ]
sl@0	355	INFO_PRINTF4(_L("Good Frames %d, Bad Frames %d, Total Frames %d"),
sl@0	356	goodFrameCount, badFrameCount, badFrameCount+goodFrameCount );
sl@0	357
sl@0	358	return result ;
sl@0	359	}
sl@0	360
sl@0	361	/**
sl@0	362	*
sl@0	363	* CompareGsm610Frames
sl@0	364	* This function compares two encoded gsm610 frames
sl@0	365	* @result TBool Frames are the same or different
sl@0	366	*
sl@0	367	**/
sl@0	368	TBool CTest_MMF_Gsm610::CompareGsm610Frames( TUint8* aGsmFrame,TUint8* aRefGsmFrame )
sl@0	369	{
sl@0	370	TBool result = ETrue;
sl@0	371	ASSERT( aGsmFrame );
sl@0	372	__ASSERT_DEBUG(aGsmFrame,Panic(EBadArgument));
sl@0	373	__ASSERT_DEBUG(aRefGsmFrame,Panic(EBadArgument));
sl@0	374
sl@0	375	codes codeBuf0;
sl@0	376	codes codeBuf1;
sl@0	377	codes refCodeBuf0;
sl@0	378	codes refCodeBuf1;
sl@0	379
sl@0	380	UnpackFrame0(&codeBuf0, aGsmFrame );
sl@0	381	UnpackFrame1(&codeBuf1, aGsmFrame );
sl@0	382	UnpackFrame0(&refCodeBuf0, aRefGsmFrame );
sl@0	383	UnpackFrame1(&refCodeBuf1, aRefGsmFrame );
sl@0	384
sl@0	385	if( !Compare( codeBuf0, refCodeBuf0 ) \|\|
sl@0	386	!Compare( codeBuf1, refCodeBuf1) )
sl@0	387
sl@0	388	{
sl@0	389	//LogGsmFrames( codeBuf0, refCodeBuf0 ); // add for debug reasons
sl@0	390	//LogGsmFrames( codeBuf1, refCodeBuf1 ); // add for debugging reasons
sl@0	391	result = EFalse;
sl@0	392	}
sl@0	393
sl@0	394	return result ;
sl@0	395	}
sl@0	396
sl@0	397	/**
sl@0	398	*
sl@0	399	* LogGsmFrames
sl@0	400	* @param aGsmFrame
sl@0	401	* @param aRefGsmFrame
sl@0	402	*
sl@0	403	**/
sl@0	404	void CTest_MMF_Gsm610::LogGsmFrames( codes& aGsmFrame, codes& aRefGsmFrame )
sl@0	405	{
sl@0	406	//[ print the quantized lar coefficients ]
sl@0	407	INFO_PRINTF1(_L("Coded Frame:"));
sl@0	408	LogGsmFrame( aGsmFrame );
sl@0	409	INFO_PRINTF1(_L("Reference Frame:"));
sl@0	410	LogGsmFrame( aRefGsmFrame );
sl@0	411	}
sl@0	412
sl@0	413	/**
sl@0	414	*
sl@0	415	* LogGsmFrame
sl@0	416	* prints a GsmFrame to the test log
sl@0	417	* @param aFrame
sl@0	418	*
sl@0	419	**/
sl@0	420	void CTest_MMF_Gsm610::LogGsmFrame ( codes& aFrame )
sl@0	421	{
sl@0	422	INFO_PRINTF2(_L("LARc[0] = %d"), aFrame.LARc[0]);
sl@0	423	INFO_PRINTF2(_L("LARc[1] = %d"), aFrame.LARc[1]);
sl@0	424	INFO_PRINTF2(_L("LARc[2] = %d"), aFrame.LARc[2]);
sl@0	425	INFO_PRINTF2(_L("LARc[3] = %d"), aFrame.LARc[3]);
sl@0	426	INFO_PRINTF2(_L("LARc[4] = %d"), aFrame.LARc[4]);
sl@0	427	INFO_PRINTF2(_L("LARc[5] = %d"), aFrame.LARc[5]);
sl@0	428	INFO_PRINTF2(_L("LARc[6] = %d"), aFrame.LARc[6]);
sl@0	429	INFO_PRINTF2(_L("LARc[7] = %d"), aFrame.LARc[7]);
sl@0	430
sl@0	431	//[ for each sub frame print its data ]
sl@0	432	for( TInt i = 0; i < 4; i++ )
sl@0	433	{
sl@0	434	INFO_PRINTF2(_L("Nc = %d"), aFrame.sfc[i].Nc);
sl@0	435	INFO_PRINTF2(_L("bc = %d"), aFrame.sfc[i].bc);
sl@0	436	INFO_PRINTF2(_L("Mc= %d"), aFrame.sfc[i].Mc);
sl@0	437	INFO_PRINTF2(_L("xmaxc = %d"), aFrame.sfc[i].xmaxc);
sl@0	438	INFO_PRINTF2(_L("xMc[0] = %d"), aFrame.sfc[i].xMc[0]);
sl@0	439	INFO_PRINTF2(_L("xMc[1] = %d"), aFrame.sfc[i].xMc[1]);
sl@0	440	INFO_PRINTF2(_L("xMc[2] = %d"), aFrame.sfc[i].xMc[2]);
sl@0	441	INFO_PRINTF2(_L("xMc[3] = %d"), aFrame.sfc[i].xMc[3]);
sl@0	442	INFO_PRINTF2(_L("xMc[4] = %d"), aFrame.sfc[i].xMc[4]);
sl@0	443	INFO_PRINTF2(_L("xMc[5] = %d"), aFrame.sfc[i].xMc[5]);
sl@0	444	INFO_PRINTF2(_L("xMc[6] = %d"), aFrame.sfc[i].xMc[6]);
sl@0	445	INFO_PRINTF2(_L("xMc[7] = %d"), aFrame.sfc[i].xMc[7]);
sl@0	446	INFO_PRINTF2(_L("xMc[8] = %d"), aFrame.sfc[i].xMc[8]);
sl@0	447	INFO_PRINTF2(_L("xMc[9] = %d"), aFrame.sfc[i].xMc[9]);
sl@0	448	INFO_PRINTF2(_L("xMc[10] = %d"), aFrame.sfc[i].xMc[10]);
sl@0	449	INFO_PRINTF2(_L("xMc[11] = %d"), aFrame.sfc[i].xMc[11]);
sl@0	450	INFO_PRINTF2(_L("xMc[12] = %d"), aFrame.sfc[i].xMc[12]);
sl@0	451	}
sl@0	452	}
sl@0	453
sl@0	454	/**
sl@0	455	*
sl@0	456	* Compare
sl@0	457	*
sl@0	458	**/
sl@0	459	TBool CTest_MMF_Gsm610::Compare( codes& aFrame1, codes& aFrame2 )
sl@0	460	{
sl@0	461	TBool result = ETrue;
sl@0	462
sl@0	463	if( (aFrame1.LARc[0] != aFrame2.LARc[0] ) \|\|
sl@0	464	(aFrame1.LARc[1] != aFrame2.LARc[1] ) \|\|
sl@0	465	(aFrame1.LARc[2] != aFrame2.LARc[2] ) \|\|
sl@0	466	(aFrame1.LARc[3] != aFrame2.LARc[3] ) \|\|
sl@0	467	(aFrame1.LARc[4] != aFrame2.LARc[4] ) \|\|
sl@0	468	(aFrame1.LARc[5] != aFrame2.LARc[5] ) \|\|
sl@0	469	(aFrame1.LARc[6] != aFrame2.LARc[6] ) \|\|
sl@0	470	(aFrame1.LARc[7] != aFrame2.LARc[7] ) )
sl@0	471	{
sl@0	472	result = EFalse;
sl@0	473	}
sl@0	474
sl@0	475	for( TInt i = 0; i < 4; i++ )
sl@0	476	{
sl@0	477	if(
sl@0	478	(aFrame1.sfc[i].Nc != aFrame2.sfc[i].Nc) \|\|
sl@0	479	(aFrame1.sfc[i].bc != aFrame2.sfc[i].bc) \|\|
sl@0	480	(aFrame1.sfc[i].Mc != aFrame2.sfc[i].Mc) \|\|
sl@0	481	(aFrame1.sfc[i].xmaxc != aFrame2.sfc[i].xmaxc) \|\|
sl@0	482	(aFrame1.sfc[i].xMc[0] != aFrame2.sfc[i].xMc[0]) \|\|
sl@0	483	(aFrame1.sfc[i].xMc[1] != aFrame2.sfc[i].xMc[1]) \|\|
sl@0	484	(aFrame1.sfc[i].xMc[2] != aFrame2.sfc[i].xMc[2]) \|\|
sl@0	485	(aFrame1.sfc[i].xMc[3] != aFrame2.sfc[i].xMc[3]) \|\|
sl@0	486	(aFrame1.sfc[i].xMc[4] != aFrame2.sfc[i].xMc[4]) \|\|
sl@0	487	(aFrame1.sfc[i].xMc[5] != aFrame2.sfc[i].xMc[5]) \|\|
sl@0	488	(aFrame1.sfc[i].xMc[6] != aFrame2.sfc[i].xMc[6]) \|\|
sl@0	489	(aFrame1.sfc[i].xMc[7] != aFrame2.sfc[i].xMc[7]) \|\|
sl@0	490	(aFrame1.sfc[i].xMc[8] != aFrame2.sfc[i].xMc[8]) \|\|
sl@0	491	(aFrame1.sfc[i].xMc[9] != aFrame2.sfc[i].xMc[9]) \|\|
sl@0	492	(aFrame1.sfc[i].xMc[10] != aFrame2.sfc[i].xMc[10]) \|\|
sl@0	493	(aFrame1.sfc[i].xMc[11] != aFrame2.sfc[i].xMc[11]) \|\|
sl@0	494	(aFrame1.sfc[i].xMc[12] != aFrame2.sfc[i].xMc[12]))
sl@0	495	{
sl@0	496	result = EFail;
sl@0	497	}
sl@0	498	}
sl@0	499
sl@0	500	return result;
sl@0	501	}
sl@0	502
sl@0	503	/**
sl@0	504	*
sl@0	505	* CompareCodedResults
sl@0	506	*
sl@0	507	*/
sl@0	508	TBool CTest_MMF_Gsm610::CompareDecodeResults(CMMFDataBuffer* aEncoded, CMMFDataBuffer* aRefFrame )
sl@0	509	{
sl@0	510	TBool result = ETrue;
sl@0	511
sl@0	512	//[ precondition the buffers are of the same length ]
sl@0	513	__ASSERT_DEBUG(aEncoded,Panic(EBadArgument));
sl@0	514	__ASSERT_DEBUG(aRefFrame,Panic(EBadArgument));
sl@0	515	__ASSERT_DEBUG(aEncoded->Data().MaxLength() == aRefFrame->Data().MaxLength(),Panic(EBadArgument));
sl@0	516
sl@0	517	TUint8 pResults = CONST_CAST(TUint8,aEncoded->Data().Ptr());
sl@0	518	TUint8 pRefData = CONST_CAST(TUint8,aRefFrame->Data().Ptr());
sl@0	519	TInt numResults = aEncoded->Data().MaxLength();
sl@0	520
sl@0	521	if (Mem::Compare( pResults,numResults,pRefData,numResults)!=0)
sl@0	522	{
sl@0	523	result = EFalse;
sl@0	524	}
sl@0	525
sl@0	526	return result ;
sl@0	527	}
sl@0	528	/**
sl@0	529	*
sl@0	530	* ReadDataL
sl@0	531	* Reads entire data file into buffer
sl@0	532	*
sl@0	533	**/
sl@0	534	void CTest_MMF_Gsm610::ReadDataL( CMMFDataBuffer*& aBuffer, const TDesC& aFile1 )
sl@0	535	{
sl@0	536	TFileName fileName = GetSuite()->DefaultPath();
sl@0	537	fileName.Append(aFile1);
sl@0	538
sl@0	539	RFile file1;
sl@0	540	User::LeaveIfError(file1.Open(iFs, fileName, EFileShareAny \| EFileStream \| EFileRead));
sl@0	541	CleanupClosePushL(file1);
sl@0	542	TInt fileSize = 0;
sl@0	543	User::LeaveIfError(file1.Size(fileSize));
sl@0	544	aBuffer = CMMFDescriptorBuffer::NewL(fileSize);
sl@0	545	User::LeaveIfError(file1.Read( aBuffer->Data(),fileSize));
sl@0	546	CleanupStack::PopAndDestroy(1); //file1
sl@0	547	}
sl@0	548
sl@0	549	/**
sl@0	550	*
sl@0	551	* OpenFileL
sl@0	552	* @param aFile
sl@0	553	* @param aFileName
sl@0	554	*
sl@0	555	**/
sl@0	556	void CTest_MMF_Gsm610::OpenFileL( RFile& aFile, const TDesC& aFileName )
sl@0	557	{
sl@0	558	User::LeaveIfError(aFile.Open(iFs, aFileName, EFileShareAny \| EFileStream \| EFileRead));
sl@0	559	}
sl@0	560
sl@0	561	/**
sl@0	562	*
sl@0	563	* CloseFileL
sl@0	564	* @param aFile
sl@0	565	*
sl@0	566	**/
sl@0	567	void CTest_MMF_Gsm610::CloseFileL( RFile& aFile )
sl@0	568	{
sl@0	569	aFile.Close();
sl@0	570	}
sl@0	571
sl@0	572	/**
sl@0	573	*
sl@0	574	* ReadDataBuffer
sl@0	575	* @param aFile
sl@0	576	* assumes file reads sufficient data
sl@0	577	*
sl@0	578	**/
sl@0	579	void CTest_MMF_Gsm610::ReadDataBufferL( const RFile& aFile, CMMFDataBuffer& aBuffer )
sl@0	580	{
sl@0	581	//[ The read will set the length of the descriptor to the number of bytes read]
sl@0	582	User::LeaveIfError(aFile.Read( aBuffer.Data(),aBuffer.Data().MaxLength() ));
sl@0	583	INFO_PRINTF2(_L("Bytes read = %d"), aBuffer.Data().Length() );
sl@0	584	}
sl@0	585
sl@0	586	/**
sl@0	587	*
sl@0	588	* FillPcmBuffer
sl@0	589	* @param aSrcBuffer
sl@0	590	* Fill a buffer with a sine wave
sl@0	591	*
sl@0	592	**/
sl@0	593	void CTest_MMF_Gsm610::FillPcmBuffer( CMMFDataBuffer& aSrcBuffer )
sl@0	594	{
sl@0	595	//fill the Src Buffer
sl@0	596	TUint8* pDst = CONST_CAST(TUint8*,aSrcBuffer.Data().Ptr());
sl@0	597	TInt length = aSrcBuffer.Data().MaxLength();
sl@0	598
sl@0	599	//[encode the data]
sl@0	600	TInt16 srcValue = 0;
sl@0	601	TReal val = 0.0;
sl@0	602	TReal theta = 0.0;
sl@0	603	for(TInt i=0; i<length/2; i++)
sl@0	604	{
sl@0	605	//[ assign data and place in buffer]
sl@0	606	theta = KPi*i/5; // fundamental of 800hz sampled @8khz has 20 db or
sl@0	607	// better reproduction through gsm codec
sl@0	608	User::LeaveIfError(Math::Sin(val,theta));
sl@0	609	srcValue = static_cast<TInt16>( 1000 * val );
sl@0	610	*pDst++ = static_cast<TUint8>( srcValue & KAndMask8bit);
sl@0	611	*pDst++ = static_cast<TUint8>((srcValue >> 8) & KAndMask8bit );
sl@0	612	//INFO_PRINTF2(_L("Sine = %d"), srcValue ); //uncomment for debugging purposes
sl@0	613	}
sl@0	614
sl@0	615	aSrcBuffer.Data().SetLength(length);
sl@0	616
sl@0	617	}
sl@0	618
sl@0	619	/**
sl@0	620	*
sl@0	621	* DoTestStepPostambleL
sl@0	622	* @result TVerdict
sl@0	623	*
sl@0	624	*/
sl@0	625	TVerdict CTest_MMF_SwCodecDevices_U_0001::DoTestStepPostambleL(void)
sl@0	626	{
sl@0	627	// close files
sl@0	628	CloseFileL( iSrcFile );
sl@0	629	CloseFileL( iCodedFile );
sl@0	630	CloseFileL( iDecodeFile );
sl@0	631	//[ clean up the buffers etc ]
sl@0	632	delete iRefSrcData; // reference source data
sl@0	633	delete iRefCodedData; //reference coded data
sl@0	634	delete iRefDecodedData; // reference decoded data
sl@0	635	delete iCodedData; // buffer of coded data
sl@0	636	delete iDecodedData; // buffer of actual decoded data
sl@0	637	delete iScratchData; // scratch data buffer
sl@0	638	return EPass;
sl@0	639	}
sl@0	640
sl@0	641	/**
sl@0	642	*
sl@0	643	* UnpackFrame0
sl@0	644	* @param aCodeBuf
sl@0	645	* @param pbuf
sl@0	646	*
sl@0	647	**/
sl@0	648	void CTest_MMF_Gsm610::UnpackFrame0(codes* aCodeBuf, TUint8* pbuf)
sl@0	649	{
sl@0	650	TInt16* LAR = aCodeBuf->LARc;
sl@0	651
sl@0	652	// unpack the LAR[0..7] from the first 4.5 bytes
sl@0	653	LAR[0] = (TInt16)((pbuf[0] & 0x3F));
sl@0	654	LAR[1] = (TInt16)(((pbuf[0] & 0xC0) >> 6) \| ((pbuf[1] & 0x0F) << 2));
sl@0	655	LAR[2] = (TInt16)(((pbuf[1] & 0xF0) >> 4) \| ((pbuf[2] & 0x01) << 4));
sl@0	656	LAR[3] = (TInt16)(((pbuf[2] & 0x3E) >> 1));
sl@0	657	LAR[4] = (TInt16)(((pbuf[2] & 0xC0) >> 6) \| ((pbuf[3] & 0x03) << 2));
sl@0	658	LAR[5] = (TInt16)(((pbuf[3] & 0x3C) >> 2));
sl@0	659	LAR[6] = (TInt16)(((pbuf[3] & 0xC0) >> 6) \| ((pbuf[4] & 0x01) << 2));
sl@0	660	LAR[7] = (TInt16)(((pbuf[4] & 0x0E) >> 1));
sl@0	661
sl@0	662	// unpack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
sl@0	663	for(TInt i = 0; i < 4; i++)
sl@0	664	{
sl@0	665	struct sfcodes& c = aCodeBuf->sfc[i];
sl@0	666	#define sfb(x) (pbuf[4+i*7+x])
sl@0	667	c.Nc = (TInt16)(((sfb(0) & 0xF0) >> 4) \| ((sfb(1) & 0x07) << 4));
sl@0	668	c.bc = (TInt16)(((sfb(1) & 0x18) >> 3));
sl@0	669	c.Mc = (TInt16)(((sfb(1) & 0x60) >> 5));
sl@0	670	c.xmaxc = (TInt16)(((sfb(1) & 0x80) >> 7) \| ((sfb(2) & 0x1F) << 1));
sl@0	671	c.xMc[0] = (TInt16)(((sfb(2) & 0xE0) >> 5));
sl@0	672	c.xMc[1] = (TInt16)((sfb(3) & 0x07));
sl@0	673	c.xMc[2] = (TInt16)(((sfb(3) & 0x3C) >> 3));
sl@0	674	c.xMc[3] = (TInt16)(((sfb(3) & 0xC0) >> 6) \| ((sfb(4) & 0x01) << 2));
sl@0	675	c.xMc[4] = (TInt16)(((sfb(4) & 0x0E) >> 1));
sl@0	676	c.xMc[5] = (TInt16)(((sfb(4) & 0x70) >> 4));
sl@0	677	c.xMc[6] = (TInt16)(((sfb(4) & 0x80) >> 7) \| ((sfb(5) & 0x03) << 1));
sl@0	678	c.xMc[7] = (TInt16)(((sfb(5) & 0x1C) >> 2));
sl@0	679	c.xMc[8] = (TInt16)(((sfb(5) & 0xE0) >> 5));
sl@0	680	c.xMc[9] = (TInt16)((sfb(6) & 0x07));
sl@0	681	c.xMc[10] = (TInt16)(((sfb(6) & 0x38) >> 3));
sl@0	682	c.xMc[11] = (TInt16)(((sfb(6) & 0xC0) >> 6) \| ((sfb(7) & 0x01) << 2));
sl@0	683	c.xMc[12] = (TInt16)(((sfb(7) & 0x0E) >> 1));
sl@0	684	#undef sfb
sl@0	685	}
sl@0	686	}
sl@0	687
sl@0	688	/**
sl@0	689	*
sl@0	690	* UnpackFrame1
sl@0	691	* @param aCodeBuf
sl@0	692	* @param pbuf
sl@0	693	*
sl@0	694	**/
sl@0	695	void CTest_MMF_Gsm610::UnpackFrame1(struct codes* aCodeBuf, TUint8* pbuf)
sl@0	696	{
sl@0	697	TInt16* LAR = aCodeBuf->LARc;
sl@0	698
sl@0	699	// unpack the LAR[0..7] from the first 4.5 bytes
sl@0	700	LAR[0] = (TInt16)(((pbuf[32] & 0xF0) >> 4) \| ((pbuf[33] & 0x03) << 4));
sl@0	701	LAR[1] = (TInt16)(((pbuf[33] & 0xFC) >> 2));
sl@0	702	LAR[2] = (TInt16)(((pbuf[34] & 0x1F)));
sl@0	703	LAR[3] = (TInt16)(((pbuf[34] & 0xE0) >> 5) \| ((pbuf[35] & 0x03) << 3));
sl@0	704	LAR[4] = (TInt16)(((pbuf[35] & 0x3C) >> 2));
sl@0	705	LAR[5] = (TInt16)(((pbuf[35] & 0xC0) >> 6) \| ((pbuf[36] & 0x03) << 2));
sl@0	706	LAR[6] = (TInt16)(((pbuf[36] & 0x1C) >> 2));
sl@0	707	LAR[7] = (TInt16)(((pbuf[36] & 0xE0) >> 5));
sl@0	708
sl@0	709	// unpack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
sl@0	710	for(TInt i = 0; i < 4; i++)
sl@0	711	{
sl@0	712	struct sfcodes& c = aCodeBuf->sfc[i];
sl@0	713	#define sfb(x) (pbuf[37+i*7+x])
sl@0	714	c.Nc = (TInt16)(sfb(0) & 0x7F);
sl@0	715	c.bc = (TInt16)(((sfb(0) & 0x80) >> 7) \| ((sfb(1) & 0x01) << 1));
sl@0	716	c.Mc = (TInt16)(((sfb(1) & 0x06) >> 1));
sl@0	717	c.xmaxc = (TInt16)(((sfb(1) & 0xF8) >> 3) \| ((sfb(2) & 0x01) << 5));
sl@0	718	c.xMc[0] = (TInt16)(((sfb(2) & 0x0E) >> 1));
sl@0	719	c.xMc[1] = (TInt16)(((sfb(2) & 0x70) >> 4));
sl@0	720	c.xMc[2] = (TInt16)(((sfb(2) & 0x80) >> 7) \| ((sfb(3) & 0x03) << 1));
sl@0	721	c.xMc[3] = (TInt16)(((sfb(3) & 0x1C) >> 2));
sl@0	722	c.xMc[4] = (TInt16)(((sfb(3) & 0xE0) >> 5));
sl@0	723	c.xMc[5] = (TInt16)(((sfb(4) & 0x07)));
sl@0	724	c.xMc[6] = (TInt16)(((sfb(4) & 0x38) >> 3));
sl@0	725	c.xMc[7] = (TInt16)(((sfb(4) & 0xC0) >> 6) \| ((sfb(5) & 0x01) << 2));
sl@0	726	c.xMc[8] = (TInt16)(((sfb(5) & 0x0E) >> 1));
sl@0	727	c.xMc[9] = (TInt16)(((sfb(5) & 0x70) >> 4));
sl@0	728	c.xMc[10] = (TInt16)(((sfb(5) & 0x80) >> 7) \| ((sfb(6) & 0x03) << 1));
sl@0	729	c.xMc[11] = (TInt16)(((sfb(6) & 0x1C) >> 2));
sl@0	730	c.xMc[12] = (TInt16)(((sfb(6) & 0xE0) >> 5));
sl@0	731
sl@0	732	#undef sfb
sl@0	733	}
sl@0	734	}
sl@0	735
sl@0	736	/**
sl@0	737	*
sl@0	738	* PackFrame0
sl@0	739	* Pack the codewords of the even frame into pack buffer.
sl@0	740	* Packing as in MS gsm610 encoder.
sl@0	741	* @param aCodeBuf Code words for one speech frame.
sl@0	742	* @param pbuf the output buffer
sl@0	743	*
sl@0	744	**/
sl@0	745	void CTest_MMF_Gsm610::PackFrame0(struct codes* aCodeBuf, TInt8* pbuf)
sl@0	746	{
sl@0	747	TInt16* LAR = aCodeBuf->LARc;
sl@0	748
sl@0	749	// pack the LARc[0..7] into the first 4.5 bytes
sl@0	750	*pbuf++ = (TUint8)(((LAR[0] ) & 0x3F) \| ((LAR[1] << 6) & 0xC0));
sl@0	751	*pbuf++ = (TUint8)(((LAR[1] >> 2) & 0x0F) \| ((LAR[2] << 4) & 0xF0));
sl@0	752	*pbuf++ = (TUint8)(((LAR[2] >> 4) & 0x01) \| ((LAR[3] << 1) & 0x3E) \| ((LAR[4] << 6) & 0xC0));
sl@0	753	*pbuf++ = (TUint8)(((LAR[4] >> 2) & 0x03) \| ((LAR[5] << 2) & 0x3C) \| ((LAR[6] << 6) & 0xC0));
sl@0	754	*pbuf = (TUint8)(((LAR[6] >> 2) & 0x01) \| ((LAR[7] << 1) & 0x0E));
sl@0	755
sl@0	756	// pack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
sl@0	757	for(TInt i = 0; i < 4; i++)
sl@0	758	{
sl@0	759	struct sfcodes& c = aCodeBuf->sfc[i];
sl@0	760	*pbuf++ \|= ((c.Nc << 4) & 0xF0);
sl@0	761	*pbuf++ = (TUint8)(((c.Nc >> 4) & 0x07) \| ((c.bc << 3) & 0x18) \| ((c.Mc << 5) & 0x60) \| ((c.xmaxc << 7) & 0x80));
sl@0	762	*pbuf++ = (TUint8)(((c.xmaxc >> 1) & 0x1F) \| ((c.xMc[0] << 5) & 0xE0));
sl@0	763	*pbuf++ = (TUint8)((c.xMc[1] & 0x07) \| ((c.xMc[2] << 3) & 0x38) \| ((c.xMc[3] << 6) & 0xC0));
sl@0	764	*pbuf++ = (TUint8)(((c.xMc[3] >> 2) & 0x01) \| ((c.xMc[4] << 1) & 0x0E) \| ((c.xMc[5] << 4) & 0x70) \| ((c.xMc[6] << 7) & 0x80));
sl@0	765	*pbuf++ = (TUint8)(((c.xMc[6] >> 1) & 0x03) \| ((c.xMc[7] << 2) & 0x1C) \| ((c.xMc[8] << 5) & 0xE0));
sl@0	766	*pbuf++ = (TUint8)((c.xMc[9] & 0x07) \| ((c.xMc[10] << 3) & 0x38) \| ((c.xMc[11] << 6) & 0xC0));
sl@0	767	*pbuf = (TUint8)(((c.xMc[11] >> 2) & 0x01) \| ((c.xMc[12] << 1) & 0x0E));
sl@0	768	}
sl@0	769	}
sl@0	770
sl@0	771	/**
sl@0	772	*
sl@0	773	* PackFrame1
sl@0	774	* Pack the codewords of the even frame into pack buffer.
sl@0	775	* Packing as in MS gsm610 encoder.
sl@0	776	* @param aCodeBuf Code words for one speech frame.
sl@0	777	* @param pbuf the output buffer
sl@0	778	*
sl@0	779	**/
sl@0	780	void CTest_MMF_Gsm610::PackFrame1(struct codes* aCodeBuf, TInt8* pbuf)
sl@0	781	{
sl@0	782	TInt16* LAR = aCodeBuf->LARc;
sl@0	783
sl@0	784	pbuf += (PACKSIZE / 2);
sl@0	785
sl@0	786	// pack the LARc[0..7] into the first 4.5 bytes, starting with the msb of the first byte
sl@0	787	*pbuf++ = (TUint8) (pbuf[0] \| ((LAR[0] << 4) & 0xF0));
sl@0	788	*pbuf++ = (TUint8)(((LAR[0] >> 4) & 0x03) \| ((LAR[1] << 2) & 0xFC));
sl@0	789	*pbuf++ = (TUint8)(((LAR[2] ) & 0x1F) \| ((LAR[3] << 5) & 0xE0));
sl@0	790	*pbuf++ = (TUint8)(((LAR[3] >> 3) & 0x03) \| ((LAR[4] << 2) & 0x3C) \| ((LAR[5] << 6) & 0xC0));
sl@0	791	*pbuf++ = (TUint8)(((LAR[5] >> 2) & 0x03) \| ((LAR[6] << 2) & 0x1C) \| ((LAR[7] << 5) & 0xE0));
sl@0	792
sl@0	793	// pack Nc, bc, Mc, xmaxc, and xMc for each of the 4 sub-frames
sl@0	794	for(TInt i = 0; i < 4; i++)
sl@0	795	{
sl@0	796	struct sfcodes& c = aCodeBuf->sfc[i];
sl@0	797	*pbuf++ = (TUint8)((c.Nc & 0x7F) \| ((c.bc << 7) & 0x80));
sl@0	798	*pbuf++ = (TUint8)(((c.bc >> 1) & 0x01) \| ((c.Mc << 1) & 0x06) \| ((c.xmaxc << 3) & 0xF8));
sl@0	799	*pbuf++ = (TUint8)(((c.xmaxc >> 5) & 0x01) \| ((c.xMc[0] << 1) & 0x0E) \| ((c.xMc[1] << 4) & 0x70) \| ((c.xMc[2] << 7) & 0x80));
sl@0	800	*pbuf++ = (TUint8)(((c.xMc[2] >> 1) & 0x03) \| ((c.xMc[3] << 2) & 0x1C) \| ((c.xMc[4] << 5) & 0xE0));
sl@0	801	*pbuf++ = (TUint8)(((c.xMc[5]) & 0x07) \| ((c.xMc[6] << 3) & 0x38) \| ((c.xMc[7] << 6) & 0xC0));
sl@0	802	*pbuf++ = (TUint8)(((c.xMc[7] >> 2) & 0x01) \| ((c.xMc[8] << 1) & 0x0E) \| ((c.xMc[9] << 4) & 0x70) \| ((c.xMc[10] << 7) & 0x80));
sl@0	803	*pbuf++ = (TUint8)(((c.xMc[10] >> 1) & 0x03) \| ((c.xMc[11] << 2) & 0x1C) \| ((c.xMc[12] << 5) & 0xE0));
sl@0	804	}
sl@0	805	}
sl@0	806
sl@0	807	/**
sl@0	808	*
sl@0	809	* CTest_MMF_SwCodecDevices_U_0001
sl@0	810	*
sl@0	811	*/
sl@0	812	CTest_MMF_SwCodecDevices_U_0002::CTest_MMF_SwCodecDevices_U_0002()
sl@0	813	{
sl@0	814	// store the name of this test case
sl@0	815	// this is the name that is used by the script file
sl@0	816	iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0002-HP");
sl@0	817	}
sl@0	818	/**
sl@0	819	*
sl@0	820	* CTest_MMF_SwCodecDevices_U_0001
sl@0	821	*
sl@0	822	**/
sl@0	823	CTest_MMF_SwCodecDevices_U_0002::~CTest_MMF_SwCodecDevices_U_0002()
sl@0	824	{
sl@0	825
sl@0	826	}
sl@0	827
sl@0	828	/**
sl@0	829	*
sl@0	830	*
sl@0	831	* DoTestStepL
sl@0	832	*
sl@0	833	**/
sl@0	834	TVerdict CTest_MMF_SwCodecDevices_U_0002::DoTestStepL()
sl@0	835	{
sl@0	836	__MM_HEAP_MARK;
sl@0	837	TVerdict result = EPass ;
sl@0	838
sl@0	839	CMmfGsm610ToPcm16HwDevice* pDecoder = CMmfGsm610ToPcm16HwDevice::NewL();
sl@0	840	CleanupStack::PushL(pDecoder);
sl@0	841	//[ note this reference should be a ptr ]
sl@0	842	CMMFSwCodec& theCodec = pDecoder->Codec();
sl@0	843
sl@0	844	//[ create buffers of the appropriate size ]
sl@0	845	const TInt srcBufferSize = theCodec.SourceBufferSize();
sl@0	846	const TInt sinkBufferSize = theCodec.SinkBufferSize();
sl@0	847	const TInt codedBufferSize = 764 KNumFramesInABuffer; // number of coded buffers * size of coded buffer 63*2
sl@0	848	iNumCodedFrames = KNumFramesInABuffer; //XXX claculate these constants soon <GK>
sl@0	849
sl@0	850	iScratchData = CMMFDescriptorBuffer::NewL( codedBufferSize);
sl@0	851
sl@0	852	iRefCodedData = CMMFDescriptorBuffer::NewL( srcBufferSize );
sl@0	853	iCodedData = CMMFDescriptorBuffer::NewL( srcBufferSize );
sl@0	854	iRefDecodedData = CMMFDescriptorBuffer::NewL( sinkBufferSize );
sl@0	855	iDecodedData = CMMFDescriptorBuffer::NewL( sinkBufferSize);
sl@0	856
sl@0	857	//[ for now process only the first buffer ]
sl@0	858	//[encode the data]
sl@0	859	INFO_PRINTF1(_L("Decoding Frames..."));
sl@0	860	TInt codedFileSize = 0;
sl@0	861	iCodedFile.Size( codedFileSize);
sl@0	862
sl@0	863	TInt numBuffers = codedFileSize/srcBufferSize;
sl@0	864	if(numBuffers > 4 )
sl@0	865	numBuffers = 4;
sl@0	866	TInt badBufferCount = 0;
sl@0	867	TInt goodBufferCount = 0;
sl@0	868	for( TInt bufferCount = 0; bufferCount < numBuffers; bufferCount++ )
sl@0	869	{
sl@0	870	ReadDataBufferL(iDecodeFile, *iRefDecodedData );
sl@0	871	ParseCodedDataL(iCodedData);
sl@0	872
sl@0	873	CMMFSwCodec::TCodecProcessResult decodeRes = theCodec.ProcessL( iCodedData, iDecodedData );
sl@0	874	if( decodeRes != CMMFSwCodec::TCodecProcessResult::EProcessComplete )
sl@0	875	{
sl@0	876	INFO_PRINTF1( _L("Error Failed to complete decoding") );
sl@0	877	return EFail;
sl@0	878	}
sl@0	879
sl@0	880	//[ compare results ]
sl@0	881	if(!CompareDecodeResults( iDecodedData, iRefDecodedData ))
sl@0	882	{
sl@0	883	result = EFail;
sl@0	884	badBufferCount++;
sl@0	885	}
sl@0	886	else
sl@0	887	{
sl@0	888	goodBufferCount++;
sl@0	889	}
sl@0	890
sl@0	891	}
sl@0	892
sl@0	893	//[ log number of good frames & number of bad frames ]
sl@0	894	INFO_PRINTF4(_L("Good Frames %d, Bad Frames %d, Total Frames %d"),
sl@0	895	goodBufferCount, badBufferCount, badBufferCount+goodBufferCount );
sl@0	896
sl@0	897	//[pop data from the cleanup stack ]
sl@0	898	CleanupStack::PopAndDestroy(pDecoder);
sl@0	899
sl@0	900	delete iRefCodedData;
sl@0	901	iRefCodedData = NULL;
sl@0	902	delete iRefDecodedData;
sl@0	903	iRefDecodedData = NULL;
sl@0	904	delete iDecodedData;
sl@0	905	iDecodedData = NULL;
sl@0	906	delete iCodedData ;
sl@0	907	iCodedData = NULL;
sl@0	908	delete iScratchData;
sl@0	909	iScratchData = NULL;
sl@0	910
sl@0	911	__MM_HEAP_MARKEND;
sl@0	912	return result;
sl@0	913	}
sl@0	914
sl@0	915	/**
sl@0	916	*
sl@0	917	* DoTestStepPreambleL
sl@0	918	*
sl@0	919	*/
sl@0	920	enum TVerdict CTest_MMF_SwCodecDevices_U_0002::DoTestStepPreambleL(void)
sl@0	921	{
sl@0	922	TVerdict result = EPass;
sl@0	923	//[ connect to the file server ]
sl@0	924	User::LeaveIfError( iFs.Connect());
sl@0	925
sl@0	926	//[ read the ref source data ]
sl@0	927	if(!GetStringFromConfig(_L("SectionOne"), _L("SourceData01"), iSourceDataFile) \|\|
sl@0	928	!GetStringFromConfig(_L("SectionOne"), _L("CodedData01"), iCodedDataFile) \|\|
sl@0	929	!GetStringFromConfig(_L("SectionOne"), _L("DecodedData01"), iDecodedDataFile) )
sl@0	930	{
sl@0	931	return EInconclusive;
sl@0	932	}
sl@0	933
sl@0	934	//[ open the data files]
sl@0	935	OpenFileL(iSrcFile,iSourceDataFile );
sl@0	936	OpenFileL(iCodedFile,iCodedDataFile );
sl@0	937	OpenFileL(iDecodeFile,iDecodedDataFile);
sl@0	938
sl@0	939	iScratchData = CMMFDescriptorBuffer::NewL(KCodedBufferSize);
sl@0	940
sl@0	941	return result;
sl@0	942	}
sl@0	943
sl@0	944	/**
sl@0	945	*
sl@0	946	* DoTestStepPostambleL
sl@0	947	* @result TVerdict
sl@0	948	*
sl@0	949	*/
sl@0	950	TVerdict CTest_MMF_SwCodecDevices_U_0002::DoTestStepPostambleL(void)
sl@0	951	{
sl@0	952	// close files
sl@0	953	CloseFileL( iCodedFile );
sl@0	954	CloseFileL( iDecodeFile );
sl@0	955	//[ clean up the buffers etc ]
sl@0	956	delete iRefSrcData; // reference source data
sl@0	957	delete iRefCodedData; //reference coded data
sl@0	958	delete iRefDecodedData; // refernce decoded data
sl@0	959	delete iCodedData; // buffer of coded data
sl@0	960	delete iDecodedData; // buffer of actual decoded data
sl@0	961	delete iScratchData; // scratch data buffer
sl@0	962	return EPass;
sl@0	963	}
sl@0	964
sl@0	965	/**
sl@0	966	*
sl@0	967	* CTest_MMF_SwCodecDevices_U_0003
sl@0	968	*
sl@0	969	**/
sl@0	970	CTest_MMF_SwCodecDevices_U_0003::CTest_MMF_SwCodecDevices_U_0003()
sl@0	971	{
sl@0	972	// store the name of this test case
sl@0	973	// this is the name that is used by the script file
sl@0	974	iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0003-HP");
sl@0	975	}
sl@0	976	/**
sl@0	977	*
sl@0	978	* ~CTest_MMF_SwCodecDevices_U_0003
sl@0	979	*
sl@0	980	**/
sl@0	981	CTest_MMF_SwCodecDevices_U_0003::~CTest_MMF_SwCodecDevices_U_0003()
sl@0	982	{
sl@0	983
sl@0	984	}
sl@0	985
sl@0	986	/**
sl@0	987	*
sl@0	988	* DoTestStepL
sl@0	989	*
sl@0	990	**/
sl@0	991	TVerdict CTest_MMF_SwCodecDevices_U_0003::DoTestStepL()
sl@0	992	{
sl@0	993	__MM_HEAP_MARK;
sl@0	994	TVerdict result = EPass ;
sl@0	995
sl@0	996	CMmfGsm610ToPcm16HwDevice* pDecoder = CMmfGsm610ToPcm16HwDevice::NewL();
sl@0	997	CleanupStack::PushL(pDecoder);
sl@0	998	//[ note this reference should be a ptr ]
sl@0	999	CMMFSwCodec& theCodec = pDecoder->Codec();
sl@0	1000
sl@0	1001	// do the same for the inverse operation
sl@0	1002	CMmfPcm16ToGsm610HwDevice* pEncoder = CMmfPcm16ToGsm610HwDevice::NewL();
sl@0	1003	CleanupStack::PushL(pEncoder);
sl@0	1004	CMMFSwCodec& theEncode = pEncoder->Codec();
sl@0	1005
sl@0	1006	//[ create buffers of the appropriate size ]
sl@0	1007	const TInt srcBufferSize = theEncode.SourceBufferSize();
sl@0	1008	const TInt sinkBufferSize = theEncode.SinkBufferSize();
sl@0	1009
sl@0	1010	iRefSrcData = CMMFDescriptorBuffer::NewL( srcBufferSize );
sl@0	1011	iRefCodedData = CMMFDescriptorBuffer::NewL( sinkBufferSize );
sl@0	1012	iRefDecodedData = CMMFDescriptorBuffer::NewL( srcBufferSize );
sl@0	1013	iCodedData = CMMFDescriptorBuffer::NewL( sinkBufferSize );
sl@0	1014	iDecodedData = CMMFDescriptorBuffer::NewL( srcBufferSize );
sl@0	1015
sl@0	1016	//[ now get a sine wave of 800hz, code and decode and
sl@0	1017	// compare the results ]
sl@0	1018	FillPcmBuffer( *iRefSrcData );
sl@0	1019
sl@0	1020	// encode
sl@0	1021	CMMFSwCodec::TCodecProcessResult encodeRes = theEncode.ProcessL( iRefSrcData, iCodedData );
sl@0	1022	if( encodeRes != CMMFSwCodec::TCodecProcessResult::EProcessComplete )
sl@0	1023	{
sl@0	1024	INFO_PRINTF1( _L("Error Failed to complete coding") );
sl@0	1025	return EFail;
sl@0	1026	}
sl@0	1027
sl@0	1028	//decode
sl@0	1029	CMMFSwCodec::TCodecProcessResult decodeRes = theCodec.ProcessL( iCodedData, iDecodedData );
sl@0	1030	if( decodeRes != CMMFSwCodec::TCodecProcessResult::EProcessComplete )
sl@0	1031	{
sl@0	1032	INFO_PRINTF1( _L("Error Failed to complete decoding") );
sl@0	1033	return EFail;
sl@0	1034	}
sl@0	1035
sl@0	1036	//[ because the codec overwrites its input regenerate it ]
sl@0	1037	FillPcmBuffer( *iRefSrcData );
sl@0	1038
sl@0	1039	//[ NOW COMPARE THE RESULTS DISTORTION < 18 DB ]
sl@0	1040
sl@0	1041	TUint8 pResults = (TUint8)(iDecodedData->Data().Ptr());
sl@0	1042	TUint8 pRefData = (TUint8)(iRefSrcData->Data().Ptr());
sl@0	1043	TInt numResults = iDecodedData->Data().MaxLength();
sl@0	1044	TReal sum1 = 0.0;
sl@0	1045	TReal sum2 = 0.0;
sl@0	1046	TReal ratio = 0.0;
sl@0	1047	TInt16 temp1 = 0;
sl@0	1048	TInt16 temp2 = 0;
sl@0	1049	numResults /= 2; // compensate for bytes to short conversion
sl@0	1050	//[print the results to allow analysis]
sl@0	1051	for( TInt index = 0; index < numResults; index++ )
sl@0	1052	{
sl@0	1053	temp1 = static_cast<TInt16>((*pResults++) &KAndMask8bit);
sl@0	1054	temp1 \|= static_cast<TInt16>((*pResults++ << 8));
sl@0	1055	sum1 += temp1*temp1;
sl@0	1056	temp2 = static_cast<TInt16>((*pRefData++) &KAndMask8bit);
sl@0	1057	temp2 \|= static_cast<TInt16>((*pRefData++ << 8));
sl@0	1058	sum2 += (temp2-temp1)*(temp2-temp1);
sl@0	1059	//INFO_PRINTF3( _L("S %d D %d"),temp2, temp1 ); // add for debugging purposes
sl@0	1060	}
sl@0	1061
sl@0	1062	//[calculate the ratio ]
sl@0	1063	ratio = sum1;
sl@0	1064	ratio /=sum2;
sl@0	1065	TReal sn = 0.0;
sl@0	1066	// calculate as 18db
sl@0	1067	Math::Log( sn, ratio );
sl@0	1068	sn *= 10;
sl@0	1069
sl@0	1070	INFO_PRINTF2( _L("Signal to Noise Ratio @800Hz %f db"), sn );
sl@0	1071	#ifdef EABI
sl@0	1072	if( sn < 18 ) //[ @800hz a sn of less than 18db is deemed a failure
sl@0	1073	// not that sn is a great measure of a voice coder's quality]
sl@0	1074	result = EFail ;
sl@0	1075	#else
sl@0	1076	if( sn < 14 ) //DEF086144 - Codec source buffer size is reduced
sl@0	1077	result = EFail ;
sl@0	1078	#endif
sl@0	1079	//[pop data from the cleanup stack ]
sl@0	1080	CleanupStack::PopAndDestroy(2, pDecoder); //pDecoder, theCodec,
sl@0	1081	delete iRefSrcData;
sl@0	1082	iRefSrcData = NULL;
sl@0	1083	delete iRefCodedData;
sl@0	1084	iRefCodedData = NULL;
sl@0	1085	delete iRefDecodedData;
sl@0	1086	iRefDecodedData = NULL;
sl@0	1087	delete iCodedData;
sl@0	1088	iCodedData = NULL;
sl@0	1089	delete iDecodedData;
sl@0	1090	iDecodedData = NULL;
sl@0	1091
sl@0	1092	__MM_HEAP_MARKEND;
sl@0	1093
sl@0	1094	return result;
sl@0	1095	}
sl@0	1096
sl@0	1097	/**
sl@0	1098	*
sl@0	1099	* DoTestStepPreambleL
sl@0	1100	*
sl@0	1101	**/
sl@0	1102	TVerdict CTest_MMF_SwCodecDevices_U_0003::DoTestStepPreambleL(void)
sl@0	1103	{
sl@0	1104	return EPass;
sl@0	1105	}
sl@0	1106
sl@0	1107	/**
sl@0	1108	*
sl@0	1109	* DoTestStepPostambleL
sl@0	1110	*
sl@0	1111	**/
sl@0	1112	TVerdict CTest_MMF_SwCodecDevices_U_0003::DoTestStepPostambleL(void)
sl@0	1113	{
sl@0	1114	return EPass;
sl@0	1115	}
sl@0	1116
sl@0	1117	/**
sl@0	1118	*
sl@0	1119	* FillSrcBufferL
sl@0	1120	* @param aSrcData pointer to the src data which stores 16bit samples
sl@0	1121	* @param aNoSamples number of 16bit samples to store
sl@0	1122	* @param aOffset offset used to generate the samples (linear range)
sl@0	1123	**/
sl@0	1124	void TLawUtility::FillSrcBufferL( TUint8* aSrcData, TInt aNoSamples, TInt16 aOffset )
sl@0	1125	{
sl@0	1126	//[precondition aSrcData != NULL ]
sl@0	1127	if( !aSrcData )
sl@0	1128	User::Leave( KErrArgument );
sl@0	1129	const TInt16 KUpperLimit = static_cast<TInt16>(aOffset + aNoSamples);
sl@0	1130	TUint8* pDest = aSrcData ;
sl@0	1131	for( TInt16 i = aOffset; i< KUpperLimit; i++ )
sl@0	1132	{
sl@0	1133	*pDest++ = static_cast<TUint8>( i & 0xff);
sl@0	1134	*pDest++ = static_cast<TUint8>( (i >>8) &0xff );
sl@0	1135	}
sl@0	1136	}
sl@0	1137
sl@0	1138	/**
sl@0	1139	*
sl@0	1140	* CompareCodedData
sl@0	1141	* @param aCodedData the data coded using symbian codec
sl@0	1142	* @param aRefCodedData the data coded using independent implementation
sl@0	1143	* @param aNoSamples the number of coded samples
sl@0	1144	*
sl@0	1145	**/
sl@0	1146	TInt TLawUtility::CompareCodedDataL(TUint8* aCodedData,TUint8* aRefCodedData, TInt aNoSamples )
sl@0	1147	{
sl@0	1148	TInt result = KErrNone;
sl@0	1149	//[precondition aCodedData != NULL ]
sl@0	1150	if( !aCodedData )
sl@0	1151	User::Leave( KErrArgument);
sl@0	1152	//[preciondition aRefCodedData != NULL ]
sl@0	1153	if( !aRefCodedData )
sl@0	1154	User::Leave( KErrArgument );
sl@0	1155
sl@0	1156	//[ use mem compare to compare the data Buffers ]
sl@0	1157	if( Mem::Compare(aCodedData, aNoSamples, aRefCodedData, aNoSamples )!=0)
sl@0	1158	{
sl@0	1159	//[ data is not the same ]
sl@0	1160	for( TInt count = 0; count < aNoSamples; count++ )
sl@0	1161	{
sl@0	1162	//RDebug::Print(_L("c1 %u c2 %u"), aCodedData++, aRefCodedData++); Statement commented under DEF105143
sl@0	1163	*aCodedData++;
sl@0	1164	*aRefCodedData++;
sl@0	1165	}
sl@0	1166	result = KErrCorrupt;
sl@0	1167	}
sl@0	1168
sl@0	1169	return result;
sl@0	1170	}
sl@0	1171
sl@0	1172	/**
sl@0	1173	*
sl@0	1174	* AssembleValL
sl@0	1175	* @param aDecodedData
sl@0	1176	* @return decoded value
sl@0	1177	*
sl@0	1178	**/
sl@0	1179	TInt16 TLawUtility::AssembleValL(TUint8* aDecodedData)
sl@0	1180	{
sl@0	1181	TInt16 val;
sl@0	1182	if(!aDecodedData )
sl@0	1183	User::Leave( KErrArgument);
sl@0	1184
sl@0	1185	//assemble the value
sl@0	1186	val = static_cast<TInt16>( aDecodedData[0] &KAndMask8bit);
sl@0	1187	val \|= static_cast<TInt16>((aDecodedData[1] << 8 ));
sl@0	1188
sl@0	1189	return val;
sl@0	1190	}
sl@0	1191
sl@0	1192	/**
sl@0	1193	*
sl@0	1194	* SNRatio
sl@0	1195	*
sl@0	1196	**/
sl@0	1197	TReal TLawUtility::SNRatioL(TUint8* aDecodedData, TUint8* aSrcData, TInt aNoSamples )
sl@0	1198	{
sl@0	1199	const TReal KThreshold = 0.0001;
sl@0	1200	TReal ratio = 0.0;
sl@0	1201	//[precondition aDecodedData != NULL ]
sl@0	1202	if( !aDecodedData )
sl@0	1203	User::Leave( KErrArgument );
sl@0	1204	//[ precondition aSrcData != NULL ]
sl@0	1205	if( !aSrcData )
sl@0	1206	User::Leave( KErrArgument );
sl@0	1207
sl@0	1208	TReal sumSig = 0.0; // numerator
sl@0	1209	TReal sumNoise = 0.0; // denominator
sl@0	1210	TInt difference = 0;
sl@0	1211	TInt16 dataValue = 0;
sl@0	1212	TInt decodeVal = 0;
sl@0	1213	for( TInt count = 0; count < aNoSamples; count++ )
sl@0	1214	{
sl@0	1215	decodeVal = AssembleValL(aDecodedData);
sl@0	1216	dataValue = AssembleValL(aSrcData);
sl@0	1217	difference = decodeVal - dataValue;
sl@0	1218	sumSig += (decodeVal*decodeVal); // sum of the squares of the signal
sl@0	1219	sumNoise += (difference * difference ); // sum of the square of the difference
sl@0	1220	aDecodedData+=2;
sl@0	1221	aSrcData+=2;
sl@0	1222	}
sl@0	1223
sl@0	1224	//[ guard against division by zero ]
sl@0	1225	if( !( sumNoise >= KThreshold ))
sl@0	1226	User::Leave( KErrUnderflow );
sl@0	1227
sl@0	1228	//[ calculate the sn ratio ]
sl@0	1229	//[ 10log10( sumSig/SumNoise ]
sl@0	1230	Math::Log( ratio, (sumSig/sumNoise) );
sl@0	1231	ratio = 10; // ratio = 10log( x2/(error2)) in db
sl@0	1232	return ratio;
sl@0	1233	}
sl@0	1234
sl@0	1235	/**
sl@0	1236	*
sl@0	1237	* CompareSNRatiosL
sl@0	1238	* @param aCodecSN codec under test SN ratio in db
sl@0	1239	* @param aCodecSN2 refernce codec SN ratio in db
sl@0	1240	* @param aThreshold difference allowed in db
sl@0	1241	* @result within tolerance
sl@0	1242	*
sl@0	1243	**/
sl@0	1244	TBool TLawUtility::CompareSNRatiosL( TReal aCodecSN, TReal aCodecSN2, TReal aTolerance )
sl@0	1245	{
sl@0	1246	TBool result = ETrue;
sl@0	1247	TReal difference = (aCodecSN - aCodecSN2);
sl@0	1248	//[ it would be nice to replace this with a abs function ?]
sl@0	1249	if( difference < 0.0 )
sl@0	1250	{
sl@0	1251	if( aTolerance > difference )
sl@0	1252	{
sl@0	1253	result = EFalse;
sl@0	1254	}
sl@0	1255	}
sl@0	1256	else
sl@0	1257	{
sl@0	1258	if( aTolerance < difference )
sl@0	1259	{
sl@0	1260	result = EFalse;
sl@0	1261	}
sl@0	1262	}
sl@0	1263
sl@0	1264	return result;
sl@0	1265	}
sl@0	1266
sl@0	1267	/**
sl@0	1268	*
sl@0	1269	* ComputeSNL compute the Signal to Noise Ratio
sl@0	1270	*
sl@0	1271	**/
sl@0	1272	TReal TLawUtility::ComputeSNL( TReal aSumSigSquared, TReal aSumErrorSquared )
sl@0	1273	{
sl@0	1274	TReal sn = 0.0;
sl@0	1275	const TReal tolerance = 0.001;
sl@0	1276	//[precondition error is >= tolerance ]
sl@0	1277	if( aSumErrorSquared < tolerance )
sl@0	1278	User::Leave( KErrArgument );
sl@0	1279	//[claculate ratio safely ]
sl@0	1280	Math::Log( sn, (aSumSigSquared/aSumErrorSquared));
sl@0	1281	sn*= 10;
sl@0	1282	return sn;
sl@0	1283	}
sl@0	1284
sl@0	1285	/**
sl@0	1286	*
sl@0	1287	* SumSquaredL
sl@0	1288	*
sl@0	1289	**/
sl@0	1290	TReal TLawUtility::SumSquaredL( TUint8* aData, TInt aNoSamples )
sl@0	1291	{
sl@0	1292	//[precondition arg is ok ]
sl@0	1293	if( !aData )
sl@0	1294	{
sl@0	1295	User::Leave(KErrArgument);
sl@0	1296	}
sl@0	1297
sl@0	1298	TUint8* pData = aData;
sl@0	1299	TInt16 sample ;
sl@0	1300	TReal sumSigSquared = 0.0;
sl@0	1301	for( TInt count = 0; count < aNoSamples; count++ )
sl@0	1302	{
sl@0	1303	sample = static_cast<TInt16>( pData[0] &KAndMask8bit);
sl@0	1304	sample \|= static_cast<TInt16>((pData[1] << 8 ));
sl@0	1305	sumSigSquared += (sample*sample);
sl@0	1306	pData+=2;
sl@0	1307	}
sl@0	1308
sl@0	1309	return sumSigSquared;
sl@0	1310	}
sl@0	1311
sl@0	1312	/**
sl@0	1313	*
sl@0	1314	* SumErrorSquaredL
sl@0	1315	* @param aData
sl@0	1316	* @param aData2
sl@0	1317	* @param aNoSamples
sl@0	1318	* @result TReal
sl@0	1319	*
sl@0	1320	**/
sl@0	1321	TReal TLawUtility::SumErrorSquaredL( TUint8* aData, TUint8* aData2, TInt aNoSamples )
sl@0	1322	{
sl@0	1323	//[precondition aData is not NULL]
sl@0	1324	if( !aData )
sl@0	1325	{
sl@0	1326	User::Leave(KErrArgument);
sl@0	1327	}
sl@0	1328
sl@0	1329	//[precondition aData2 is not NULL ]
sl@0	1330	if( !aData2 )
sl@0	1331	{
sl@0	1332	User::Leave(KErrArgument);
sl@0	1333	}
sl@0	1334
sl@0	1335	TUint8* pData = aData;
sl@0	1336	TUint8* pData2 = aData2;
sl@0	1337	TInt16 sample ;
sl@0	1338	TInt16 sample2;
sl@0	1339	TReal sumErrorSquared = 0.0;
sl@0	1340	TInt error;
sl@0	1341	for( TInt count = 0; count < aNoSamples; count++ )
sl@0	1342	{
sl@0	1343	error = 0;
sl@0	1344	sample = static_cast<TInt16>( pData[0] &KAndMask8bit);
sl@0	1345	sample \|= static_cast<TInt16>((pData[1] << 8 ));
sl@0	1346	sample2 = static_cast<TInt16>( pData2[0] &KAndMask8bit);
sl@0	1347	sample2 \|= static_cast<TInt16>((pData2[1] << 8 ));
sl@0	1348	error = sample -sample2; // compute the error
sl@0	1349	sumErrorSquared += (error*error); // add error squared to the sum
sl@0	1350	pData +=2;
sl@0	1351	pData2 +=2;
sl@0	1352	}
sl@0	1353
sl@0	1354	return sumErrorSquared;
sl@0	1355	}
sl@0	1356
sl@0	1357	/**
sl@0	1358	*
sl@0	1359	* CTestMuLawCodec_U_0006
sl@0	1360	*
sl@0	1361	**/
sl@0	1362	CTestMuLawCodec_U_0006::CTestMuLawCodec_U_0006()
sl@0	1363	{
sl@0	1364	//[ set test name]
sl@0	1365	iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0006-HP");
sl@0	1366	}
sl@0	1367
sl@0	1368	/**
sl@0	1369	*
sl@0	1370	* LinearToMuLawSample
sl@0	1371	* @param aSample a 16 bit pcm sample
sl@0	1372	* @result Mu Law encoded sample
sl@0	1373	*
sl@0	1374	**/
sl@0	1375	TUint8 CTestMuLawCodec_U_0006::LinearToMuLawSample( TInt16 aSample)
sl@0	1376	{
sl@0	1377	const int KBias = 0x84;
sl@0	1378	const int KClip = 32635;
sl@0	1379	TInt sign = (aSample >> 8) & 0x80;
sl@0	1380	if(sign)
sl@0	1381	aSample = static_cast<TInt16>(-aSample);
sl@0	1382	if(aSample > KClip)
sl@0	1383	aSample = KClip;
sl@0	1384	aSample = static_cast<TInt16>(aSample + KBias);
sl@0	1385	TInt exponent = static_cast<TInt>( MuLawCompressTable[(aSample>>7) & 0xFF]);
sl@0	1386	TInt mantissa = (aSample >> (exponent+3)) & 0x0F;
sl@0	1387	TInt compressedByte = ~(sign \| (exponent << 4) \| mantissa);
sl@0	1388	return static_cast<TUint8>( compressedByte );
sl@0	1389	}
sl@0	1390
sl@0	1391	/**
sl@0	1392	*
sl@0	1393	* ConvertPcmMuLaw
sl@0	1394	*
sl@0	1395	**/
sl@0	1396	void CTestMuLawCodec_U_0006::ConvertPcmMuLawL(TUint8* aSrcData, TUint8* aCodedData, TInt aNumSamples )
sl@0	1397	{
sl@0	1398	//[ precondition aSrcData ]
sl@0	1399	if( !aSrcData )
sl@0	1400	User::Leave( KErrArgument );
sl@0	1401	//[precondition aCodedData ]
sl@0	1402	if( !aCodedData )
sl@0	1403	User::Leave( KErrArgument );
sl@0	1404
sl@0	1405	TUint8* pCoded = aCodedData;
sl@0	1406	TUint8* pData = aSrcData ;
sl@0	1407	TInt16 pcmSample;
sl@0	1408	for( TInt count = 0; count < aNumSamples; count++ )
sl@0	1409	{
sl@0	1410	//[ code the data ]
sl@0	1411	pcmSample = static_cast<TInt16>(pData[0]);
sl@0	1412	pcmSample \|= static_cast<TInt16>((pData[1] << 8 ));
sl@0	1413	*pCoded++ = LinearToMuLawSample(pcmSample);
sl@0	1414	pData+=2;
sl@0	1415	}
sl@0	1416	}
sl@0	1417
sl@0	1418	/**
sl@0	1419	*
sl@0	1420	* ConvertMuLawPcm
sl@0	1421	*
sl@0	1422	**/
sl@0	1423	void CTestMuLawCodec_U_0006::ConvertMuLawPcmL(TUint8* aCoded, TUint8* aDecoded, TInt aNumSamples )
sl@0	1424	{
sl@0	1425	//[ precondition aCoded ]
sl@0	1426	if( !aCoded )
sl@0	1427	User::Leave( KErrArgument );
sl@0	1428	//[precondition aDecoded ]
sl@0	1429	if( !aDecoded )
sl@0	1430	User::Leave( KErrArgument );
sl@0	1431
sl@0	1432	TInt16 pcmSample;
sl@0	1433	TUint8* pCoded = aCoded;
sl@0	1434	TUint8* pDecoded = aDecoded;
sl@0	1435	//[ lets convert the data ]
sl@0	1436	for(TInt count = 0; count < aNumSamples; count++ )
sl@0	1437	{
sl@0	1438	pcmSample = MuLawDecompressTable[*pCoded++];
sl@0	1439	*pDecoded++ = static_cast<TUint8>( pcmSample & 0xFF);
sl@0	1440	*pDecoded++ = static_cast<TUint8>((pcmSample >> 8 ) & 0xFF);
sl@0	1441	}
sl@0	1442	}
sl@0	1443
sl@0	1444	/**
sl@0	1445	*
sl@0	1446	* DoTestStepL
sl@0	1447	*
sl@0	1448	**/
sl@0	1449	TVerdict CTestMuLawCodec_U_0006::DoTestStepL()
sl@0	1450	{
sl@0	1451	TVerdict result = EPass;
sl@0	1452	const TInt KSrcBufferSize = 400; // small buffer size
sl@0	1453	const TInt KHalfSrcBufferSize = 200; // small buffer size
sl@0	1454	const TInt KCodedBufferSize = 200; // small buffer size
sl@0	1455	const TInt KLowerLimit = -800; //lower limit of test range
sl@0	1456	const TInt KUpperLimit = 800; // upper limit of test range +1
sl@0	1457
sl@0	1458	//[ allocate memory buffers]
sl@0	1459	TUint8* pSymbianSrcData = new(ELeave)TUint8[KSrcBufferSize];
sl@0	1460	CleanupStack::PushL(pSymbianSrcData);
sl@0	1461	TUint8* pIndependentSrcData = new(ELeave)TUint8[KSrcBufferSize];
sl@0	1462	CleanupStack::PushL(pIndependentSrcData);
sl@0	1463	TUint8* pSymbianCodedData = new(ELeave)TUint8[KCodedBufferSize];
sl@0	1464	CleanupStack::PushL(pSymbianCodedData);
sl@0	1465	TUint8* pIndependentCodedData = new(ELeave)TUint8[KCodedBufferSize];
sl@0	1466	CleanupStack::PushL(pIndependentCodedData);
sl@0	1467	TUint8* pSymbianDecodedData = new(ELeave)TUint8[KSrcBufferSize];
sl@0	1468	CleanupStack::PushL(pSymbianDecodedData);
sl@0	1469	TUint8* pIndependentDecodedData = new(ELeave)TUint8[KSrcBufferSize];
sl@0	1470	CleanupStack::PushL(pIndependentDecodedData);
sl@0	1471
sl@0	1472	TMMFAudioMuLawToS16PcmCodec decoder;
sl@0	1473	TMMFAudioSPcm16ToMuLawCodec encoder;
sl@0	1474
sl@0	1475	TLawUtility helper;
sl@0	1476	TReal symbianCodecSN = 0.0;
sl@0	1477	TReal independentCodecSN = 0.0;
sl@0	1478
sl@0	1479	TReal sumRefSig = 0.0; // sum of sig squared
sl@0	1480	TReal sumRefError = 0.0; // sum of error sig squared
sl@0	1481	TReal sumSymbianSig = 0.0; // sum of sig squared
sl@0	1482	TReal sumSymbianError = 0.0; // sum of error sig squared
sl@0	1483
sl@0	1484	//[ interate over a suitable range and process each buffer]
sl@0	1485	for( TInt index = KLowerLimit; index < KUpperLimit; index+= KHalfSrcBufferSize )
sl@0	1486	{
sl@0	1487	TInt16 offset = static_cast<TInt16>( index);
sl@0	1488	//[ fill the src buffers ]
sl@0	1489	helper.FillSrcBufferL( pSymbianSrcData, KHalfSrcBufferSize, offset );
sl@0	1490	helper.FillSrcBufferL( pIndependentSrcData, KHalfSrcBufferSize, offset );
sl@0	1491
sl@0	1492	//[encode the src data ]
sl@0	1493	encoder.Convert( pSymbianSrcData, pSymbianCodedData, KHalfSrcBufferSize );
sl@0	1494	ConvertPcmMuLawL(pIndependentSrcData,pIndependentCodedData,KHalfSrcBufferSize );
sl@0	1495
sl@0	1496	//[ decode the data ]
sl@0	1497	decoder.Convert( pSymbianCodedData, pSymbianDecodedData, KHalfSrcBufferSize );
sl@0	1498	ConvertMuLawPcmL( pIndependentCodedData,pIndependentDecodedData,KHalfSrcBufferSize);
sl@0	1499
sl@0	1500	//[ check both codecs code the data similarly]
sl@0	1501	TInt errorCode =helper.CompareCodedDataL(pIndependentCodedData, pSymbianCodedData, KHalfSrcBufferSize );
sl@0	1502	if( errorCode != KErrNone )
sl@0	1503	{
sl@0	1504	INFO_PRINTF1(_L("Forward Transformation for Mu-Law codec is not conformant to ref codec"));
sl@0	1505	User::LeaveIfError(errorCode);
sl@0	1506	}
sl@0	1507	//[ upate running total sums to be used for signal to noise
sl@0	1508	// ratio calculations ]
sl@0	1509	sumRefSig += helper.SumSquaredL(pIndependentSrcData, KHalfSrcBufferSize);
sl@0	1510	sumRefError += helper.SumErrorSquaredL(pIndependentSrcData,pIndependentDecodedData,KHalfSrcBufferSize);
sl@0	1511	sumSymbianSig += helper.SumSquaredL(pSymbianSrcData,KHalfSrcBufferSize);
sl@0	1512	sumSymbianError += helper.SumErrorSquaredL(pSymbianSrcData,pSymbianDecodedData,KHalfSrcBufferSize);
sl@0	1513	}
sl@0	1514
sl@0	1515	const TReal KTolerance = 1; // allow for a 1 db tolerance
sl@0	1516	symbianCodecSN = helper.ComputeSNL(sumSymbianSig,sumSymbianError);
sl@0	1517	independentCodecSN = helper.ComputeSNL(sumRefSig, sumRefError);
sl@0	1518	// Gamma = (dynamic range of codec /signal std deviation )
sl@0	1519	INFO_PRINTF1(_L("We would expect S/N ration to be greater than 35db for an MuLaw codec with Gamma = 10"));
sl@0	1520	INFO_PRINTF2(_L("Signal/Noise Ratio Symbian Codec %f"), symbianCodecSN );
sl@0	1521	INFO_PRINTF2(_L("Signal/Noise Ratio Reference Codec %f"), independentCodecSN );
sl@0	1522
sl@0	1523	//[ compare the s/n ratio's of the two codec implementations]
sl@0	1524	if( !helper.CompareSNRatiosL( symbianCodecSN, independentCodecSN, KTolerance ))
sl@0	1525	{
sl@0	1526	//[ fail the test because the s/n ratios were divergent ]
sl@0	1527	result = EFail;
sl@0	1528	}
sl@0	1529	CleanupStack::PopAndDestroy(6,pSymbianSrcData); //pSymbianSrcData,pIndependentSrcData,
sl@0	1530	//pSymbianCodedData,pIndependentCodedData
sl@0	1531	//pSymbianDecodedData,pIndependentDecodedData
sl@0	1532
sl@0	1533	return result;
sl@0	1534	}
sl@0	1535
sl@0	1536	/**
sl@0	1537	*
sl@0	1538	* DoTestStepPreambleL
sl@0	1539	*
sl@0	1540	**/
sl@0	1541	TVerdict CTestMuLawCodec_U_0006::DoTestStepPreambleL(void)
sl@0	1542	{
sl@0	1543	TVerdict result = EPass;
sl@0	1544	return result; //nothing doing
sl@0	1545	}
sl@0	1546
sl@0	1547	/**
sl@0	1548	*
sl@0	1549	* DoTestStepPostambleL
sl@0	1550	*
sl@0	1551	**/
sl@0	1552	TVerdict CTestMuLawCodec_U_0006::DoTestStepPostambleL(void)
sl@0	1553	{
sl@0	1554	TVerdict result = EPass;
sl@0	1555	return result; //nothing doing
sl@0	1556	}
sl@0	1557
sl@0	1558	/**
sl@0	1559	*
sl@0	1560	* Mu-Law Compression Table
sl@0	1561	*
sl@0	1562	**/
sl@0	1563	const TInt8 CTestMuLawCodec_U_0006::MuLawCompressTable[PcmToMuLawCompressionTableSize] =
sl@0	1564	{
sl@0	1565	0,0,1,1,2,2,2,2,3,3,3,3,3,3,3,3,
sl@0	1566	4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
sl@0	1567	5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
sl@0	1568	5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
sl@0	1569	6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
sl@0	1570	6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
sl@0	1571	6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
sl@0	1572	6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
sl@0	1573	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
sl@0	1574	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
sl@0	1575	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
sl@0	1576	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
sl@0	1577	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
sl@0	1578	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
sl@0	1579	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
sl@0	1580	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
sl@0	1581	};
sl@0	1582
sl@0	1583	/**
sl@0	1584	*
sl@0	1585	* Mu-Law Decompression Table
sl@0	1586	*
sl@0	1587	**/
sl@0	1588	const TInt16 CTestMuLawCodec_U_0006::MuLawDecompressTable[MuLawToPcmCompressionTableSize]=
sl@0	1589	{
sl@0	1590	-32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
sl@0	1591	-23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
sl@0	1592	-15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
sl@0	1593	-11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
sl@0	1594	-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
sl@0	1595	-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
sl@0	1596	-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
sl@0	1597	-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
sl@0	1598	-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
sl@0	1599	-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
sl@0	1600	-876, -844, -812, -780, -748, -716, -684, -652,
sl@0	1601	-620, -588, -556, -524, -492, -460, -428, -396,
sl@0	1602	-372, -356, -340, -324, -308, -292, -276, -260,
sl@0	1603	-244, -228, -212, -196, -180, -164, -148, -132,
sl@0	1604	-120, -112, -104, -96, -88, -80, -72, -64,
sl@0	1605	-56, -48, -40, -32, -24, -16, -8, 0,
sl@0	1606	32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
sl@0	1607	23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
sl@0	1608	15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
sl@0	1609	11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
sl@0	1610	7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
sl@0	1611	5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
sl@0	1612	3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
sl@0	1613	2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
sl@0	1614	1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
sl@0	1615	1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
sl@0	1616	876, 844, 812, 780, 748, 716, 684, 652,
sl@0	1617	620, 588, 556, 524, 492, 460, 428, 396,
sl@0	1618	372, 356, 340, 324, 308, 292, 276, 260,
sl@0	1619	244, 228, 212, 196, 180, 164, 148, 132,
sl@0	1620	120, 112, 104, 96, 88, 80, 72, 64,
sl@0	1621	56, 48, 40, 32, 24, 16, 8, 0
sl@0	1622	};
sl@0	1623
sl@0	1624	/**
sl@0	1625	*
sl@0	1626	* CTestALawCodec_U_0004
sl@0	1627	*
sl@0	1628	**/
sl@0	1629	CTestALawCodec_U_0004::CTestALawCodec_U_0004()
sl@0	1630	{
sl@0	1631	//[ set test name ]
sl@0	1632	iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0004-HP");
sl@0	1633	}
sl@0	1634
sl@0	1635	/**
sl@0	1636	*
sl@0	1637	* ConvertPcmALaw converts Pcm 16 to 8bit ALaw
sl@0	1638	* @param aSrcData The src data
sl@0	1639	* @param aCoded The coded result
sl@0	1640	* @param aNumSamples The number of samples to be processed
sl@0	1641	* @precondition aSrcData is not NULL
sl@0	1642	* @precondition aCodedData is not NULL
sl@0	1643	* @precondition there is sufficient room in the destination
sl@0	1644	* to contain the coded samples
sl@0	1645	*
sl@0	1646	**/
sl@0	1647	void CTestALawCodec_U_0004::ConvertPcmALawL(TUint8* aSrcData, TUint8* aCodedData, TInt aNumSamples )
sl@0	1648	{
sl@0	1649	//[ precondition aSrcData ]
sl@0	1650	if( !aSrcData )
sl@0	1651	User::Leave( KErrArgument );
sl@0	1652	//[precondition aCodedData ]
sl@0	1653	if( !aCodedData )
sl@0	1654	User::Leave( KErrArgument );
sl@0	1655
sl@0	1656	TUint8* pCoded = aCodedData;
sl@0	1657	TUint8* pData = aSrcData ;
sl@0	1658	TInt16 pcmSample;
sl@0	1659	for( TInt count = 0; count < aNumSamples; count++ )
sl@0	1660	{
sl@0	1661	//[ code the data ]
sl@0	1662	pcmSample = static_cast<TInt16>(pData[0]);
sl@0	1663	pcmSample \|= static_cast<TInt16>((pData[1] << 8 ));
sl@0	1664	*pCoded++ = LinearToALawSample(pcmSample);
sl@0	1665	pData+=2;
sl@0	1666	}
sl@0	1667	}
sl@0	1668
sl@0	1669	/**
sl@0	1670	*
sl@0	1671	* ConvertALawPcm converts from 8bit ALaw to Pcm16
sl@0	1672	* @param aCoded The coded data
sl@0	1673	* @param aDecoded The decoded result
sl@0	1674	* @param aNumSamples The number of samples to be processed
sl@0	1675	* @precondition aCoded is not NULL
sl@0	1676	* @precondition aDecoded is not NULL
sl@0	1677	* @precondition there is sufficient room in the destination
sl@0	1678	* to contain the coded samples
sl@0	1679	*
sl@0	1680	**/
sl@0	1681	void CTestALawCodec_U_0004::ConvertALawPcmL(TUint8* aCoded, TUint8* aDecoded, TInt aNumSamples )
sl@0	1682	{
sl@0	1683	//[ precondition aSrcData ]
sl@0	1684	if( !aCoded )
sl@0	1685	User::Leave( KErrArgument );
sl@0	1686	//[precondition aCodedData ]
sl@0	1687	if( !aDecoded )
sl@0	1688	User::Leave( KErrArgument );
sl@0	1689
sl@0	1690	TInt16 pcmSample;
sl@0	1691	TUint8* pCoded = aCoded;
sl@0	1692	TUint8* pDecoded = aDecoded;
sl@0	1693	//[ lets convert the data ]
sl@0	1694	for(TInt count = 0; count < aNumSamples; count++ )
sl@0	1695	{
sl@0	1696	pcmSample = ALawDecompressTable[*pCoded++];
sl@0	1697	*pDecoded++ = static_cast<TUint8>(pcmSample & 0xFF);
sl@0	1698	*pDecoded++ = static_cast<TUint8>((pcmSample >> 8 ) & 0xFF);
sl@0	1699	}
sl@0	1700	}
sl@0	1701
sl@0	1702	/**
sl@0	1703	*
sl@0	1704	* LinearToALawSample converts a Pcm16 sample to ALaw
sl@0	1705	* @param aSample the PCM 16 sample to be converted
sl@0	1706	* @result coded result
sl@0	1707	*
sl@0	1708	**/
sl@0	1709	TUint8 CTestALawCodec_U_0004::LinearToALawSample(TInt16 aSample)
sl@0	1710	{
sl@0	1711	const TInt KClip = 32635;
sl@0	1712	TInt sign;
sl@0	1713	TInt exponent;
sl@0	1714	TInt mantissa;
sl@0	1715	TUint8 compressedByte;
sl@0	1716	sign = ((~aSample) >> 8) & 0x80;
sl@0	1717	if(!sign)
sl@0	1718	aSample = static_cast<TInt16>(-aSample);
sl@0	1719	if(aSample > KClip)
sl@0	1720	aSample = KClip;
sl@0	1721	if(aSample >= 256)
sl@0	1722	{
sl@0	1723	exponent = static_cast<TInt>( ALawCompressTable[(aSample >> 8) & 0x7F]);
sl@0	1724	mantissa = (aSample >> (exponent + 3) ) & 0x0F;
sl@0	1725	compressedByte = static_cast<TUint8> ((exponent << 4) \| mantissa);
sl@0	1726	}
sl@0	1727	else
sl@0	1728	{
sl@0	1729	compressedByte = static_cast<TUint8> (aSample >> 4);
sl@0	1730	}
sl@0	1731	compressedByte ^= (sign ^ 0x55);
sl@0	1732	return compressedByte;
sl@0	1733	}
sl@0	1734
sl@0	1735	/**
sl@0	1736	*
sl@0	1737	* DoTestStepL
sl@0	1738	*
sl@0	1739	**/
sl@0	1740	TVerdict CTestALawCodec_U_0004::DoTestStepL()
sl@0	1741	{
sl@0	1742	TVerdict result = EPass;
sl@0	1743	const TInt KSrcBufferSize = 400; // small buffer size
sl@0	1744	const TInt KHalfSrcBufferSize = 200; // small buffer size
sl@0	1745	const TInt KCodedBufferSize = 200; // small buffer size
sl@0	1746	const TInt KLowerLimit = -400; //lower limit of test range
sl@0	1747	const TInt KUpperLimit = 400; // upper limit of test range +1
sl@0	1748
sl@0	1749	//[ allocate memory buffers]
sl@0	1750	TUint8* pSymbianSrcData = new(ELeave)TUint8[KSrcBufferSize];
sl@0	1751	CleanupStack::PushL(pSymbianSrcData);
sl@0	1752	TUint8* pIndependentSrcData = new(ELeave)TUint8[KSrcBufferSize];
sl@0	1753	CleanupStack::PushL(pIndependentSrcData);
sl@0	1754	TUint8* pSymbianCodedData = new(ELeave)TUint8[KCodedBufferSize];
sl@0	1755	CleanupStack::PushL(pSymbianCodedData);
sl@0	1756	TUint8* pIndependentCodedData = new(ELeave)TUint8[KCodedBufferSize];
sl@0	1757	CleanupStack::PushL(pIndependentCodedData);
sl@0	1758	TUint8* pSymbianDecodedData = new(ELeave)TUint8[KSrcBufferSize];
sl@0	1759	CleanupStack::PushL(pSymbianDecodedData);
sl@0	1760	TUint8* pIndependentDecodedData = new(ELeave)TUint8[KSrcBufferSize];
sl@0	1761	CleanupStack::PushL(pIndependentDecodedData);
sl@0	1762
sl@0	1763	TMMFAudioSPcm16ToAlawCodec encoder;
sl@0	1764	TMMFAudioALawToS16PcmCodec decoder;
sl@0	1765
sl@0	1766	TLawUtility helper;
sl@0	1767	TReal symbianCodecSN = 0.0;
sl@0	1768	TReal independentCodecSN = 0.0;
sl@0	1769
sl@0	1770	TReal sumRefSig = 0.0; // sum of sig squared
sl@0	1771	TReal sumRefError = 0.0; // sum of error sig squared
sl@0	1772	TReal sumSymbianSig = 0.0; // sum of sig squared
sl@0	1773	TReal sumSymbianError = 0.0; // sum of error sig squared
sl@0	1774
sl@0	1775	//[ interate over a suitable range and process each buffer]
sl@0	1776	for( TInt index = KLowerLimit; index < KUpperLimit; index+= KHalfSrcBufferSize )
sl@0	1777	{
sl@0	1778	TInt16 offset = static_cast<TInt16>( index);
sl@0	1779	//[ fill the src buffers ]
sl@0	1780	helper.FillSrcBufferL( pSymbianSrcData, KHalfSrcBufferSize, offset );
sl@0	1781	helper.FillSrcBufferL( pIndependentSrcData, KHalfSrcBufferSize, offset );
sl@0	1782
sl@0	1783	//[encode the src data ]
sl@0	1784	encoder.Convert( pSymbianSrcData, pSymbianCodedData, KHalfSrcBufferSize );
sl@0	1785	ConvertPcmALawL(pIndependentSrcData,pIndependentCodedData,KHalfSrcBufferSize );
sl@0	1786
sl@0	1787	//[ decode the data ]
sl@0	1788	decoder.Convert( pSymbianCodedData, pSymbianDecodedData, KHalfSrcBufferSize );
sl@0	1789	ConvertALawPcmL( pIndependentCodedData,pIndependentDecodedData,KHalfSrcBufferSize);
sl@0	1790
sl@0	1791	//[ check both codecs code the data similarly]
sl@0	1792	TInt errorCode = helper.CompareCodedDataL(pIndependentCodedData, pSymbianCodedData, KHalfSrcBufferSize );
sl@0	1793	if( errorCode != KErrNone )
sl@0	1794	{
sl@0	1795	INFO_PRINTF1(_L("Forward Transformation for ALaw codec is not conformant to ref codec"));
sl@0	1796	User::LeaveIfError(errorCode);
sl@0	1797	}
sl@0	1798
sl@0	1799	//[ upate running total sums to be used for signal to noise
sl@0	1800	// ratio calculations ]
sl@0	1801	sumRefSig += helper.SumSquaredL(pIndependentSrcData, KHalfSrcBufferSize);
sl@0	1802	sumRefError += helper.SumErrorSquaredL(pIndependentSrcData,pIndependentDecodedData,KHalfSrcBufferSize);
sl@0	1803	sumSymbianSig += helper.SumSquaredL(pSymbianSrcData,KHalfSrcBufferSize);
sl@0	1804	sumSymbianError += helper.SumErrorSquaredL(pSymbianSrcData,pSymbianDecodedData,KHalfSrcBufferSize);
sl@0	1805	}
sl@0	1806	const TReal KTolerance = 1; // allow for a 1 db tolerance
sl@0	1807	symbianCodecSN = helper.ComputeSNL(sumSymbianSig,sumSymbianError);
sl@0	1808	independentCodecSN = helper.ComputeSNL(sumRefSig, sumRefError);
sl@0	1809	// Gamma = (dynamic range of codec /signal std deviation )
sl@0	1810	INFO_PRINTF1(_L("We would expect S/N ration to be greater than 30db for an ALaw codec with Gamma = 10"));
sl@0	1811	INFO_PRINTF2(_L("Signal/Noise Ratio Symbian Codec %f"), symbianCodecSN );
sl@0	1812	INFO_PRINTF2(_L("Signal/Noise Ratio Reference Codec %f"), independentCodecSN );
sl@0	1813
sl@0	1814	//[ compare the s/n ratio's of the two codec implementations]
sl@0	1815	if( !helper.CompareSNRatiosL( symbianCodecSN, independentCodecSN, KTolerance ))
sl@0	1816	{
sl@0	1817	//[ fail the test because the s/n ratios were divergent ]
sl@0	1818	result = EFail;
sl@0	1819	}
sl@0	1820
sl@0	1821	CleanupStack::PopAndDestroy(6,pSymbianSrcData); //pSymbianSrcData,pIndependentSrcData,
sl@0	1822	//pSymbianCodedData,pIndependentCodedData
sl@0	1823	//pSymbianDecodedData,pIndependentDecodedData
sl@0	1824	return result;
sl@0	1825	}
sl@0	1826
sl@0	1827	/**
sl@0	1828	*
sl@0	1829	* DoTestStepPreambleL
sl@0	1830	*
sl@0	1831	**/
sl@0	1832	TVerdict CTestALawCodec_U_0004::DoTestStepPreambleL(void)
sl@0	1833	{
sl@0	1834	TVerdict result = EPass;
sl@0	1835	return result; //nothing doing
sl@0	1836	}
sl@0	1837	/**
sl@0	1838	*
sl@0	1839	* DoTestStepPostambleL
sl@0	1840	*
sl@0	1841	**/
sl@0	1842	TVerdict CTestALawCodec_U_0004::DoTestStepPostambleL(void)
sl@0	1843	{
sl@0	1844	TVerdict result = EPass;
sl@0	1845	return result; //nothing doing
sl@0	1846	}
sl@0	1847	/**
sl@0	1848	*
sl@0	1849	* ALaw Compression Table
sl@0	1850	*
sl@0	1851	**/
sl@0	1852	const TInt8 CTestALawCodec_U_0004::ALawCompressTable[PcmToALawCompressionTableSize] =
sl@0	1853	{
sl@0	1854	1,1,2,2,3,3,3,3,
sl@0	1855	4,4,4,4,4,4,4,4,
sl@0	1856	5,5,5,5,5,5,5,5,
sl@0	1857	5,5,5,5,5,5,5,5,
sl@0	1858	6,6,6,6,6,6,6,6,
sl@0	1859	6,6,6,6,6,6,6,6,
sl@0	1860	6,6,6,6,6,6,6,6,
sl@0	1861	6,6,6,6,6,6,6,6,
sl@0	1862	7,7,7,7,7,7,7,7,
sl@0	1863	7,7,7,7,7,7,7,7,
sl@0	1864	7,7,7,7,7,7,7,7,
sl@0	1865	7,7,7,7,7,7,7,7,
sl@0	1866	7,7,7,7,7,7,7,7,
sl@0	1867	7,7,7,7,7,7,7,7,
sl@0	1868	7,7,7,7,7,7,7,7,
sl@0	1869	7,7,7,7,7,7,7,7
sl@0	1870	};
sl@0	1871
sl@0	1872	/**
sl@0	1873	*
sl@0	1874	* ALaw Decompression Table
sl@0	1875	*
sl@0	1876	**/
sl@0	1877	const TInt16 CTestALawCodec_U_0004::ALawDecompressTable[ALawToPcmCompressionTableSize] =
sl@0	1878	{
sl@0	1879	-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
sl@0	1880	-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
sl@0	1881	-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
sl@0	1882	-3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
sl@0	1883	-22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944,
sl@0	1884	-30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136,
sl@0	1885	-11008,-10496,-12032,-11520,-8960, -8448, -9984, -9472,
sl@0	1886	-15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568,
sl@0	1887	-344, -328, -376, -360, -280, -264, -312, -296,
sl@0	1888	-472, -456, -504, -488, -408, -392, -440, -424,
sl@0	1889	-88, -72, -120, -104, -24, -8, -56, -40,
sl@0	1890	-216, -200, -248, -232, -152, -136, -184, -168,
sl@0	1891	-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
sl@0	1892	-1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
sl@0	1893	-688, -656, -752, -720, -560, -528, -624, -592,
sl@0	1894	-944, -912, -1008, -976, -816, -784, -880, -848,
sl@0	1895	5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
sl@0	1896	7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
sl@0	1897	2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
sl@0	1898	3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
sl@0	1899	22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
sl@0	1900	30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
sl@0	1901	11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
sl@0	1902	15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
sl@0	1903	344, 328, 376, 360, 280, 264, 312, 296,
sl@0	1904	472, 456, 504, 488, 408, 392, 440, 424,
sl@0	1905	88, 72, 120, 104, 24, 8, 56, 40,
sl@0	1906	216, 200, 248, 232, 152, 136, 184, 168,
sl@0	1907	1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
sl@0	1908	1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
sl@0	1909	688, 656, 752, 720, 560, 528, 624, 592,
sl@0	1910	944, 912, 1008, 976, 816, 784, 880, 848
sl@0	1911	};
sl@0	1912
sl@0	1913	/**
sl@0	1914	*
sl@0	1915	* CTestIMaadCodec
sl@0	1916	*
sl@0	1917	**/
sl@0	1918	CTestIMaadCodec::CTestIMaadCodec()
sl@0	1919	{
sl@0	1920	//[ set test name ]
sl@0	1921	iTestStepName = _L("MM-MMF-SWCODECDEVICES-U-0022-HP");
sl@0	1922	}
sl@0	1923
sl@0	1924	/**
sl@0	1925	*
sl@0	1926	* DoTestStepL
sl@0	1927	*
sl@0	1928	**/
sl@0	1929	TVerdict CTestIMaadCodec::DoTestStepL()
sl@0	1930	{
sl@0	1931	__MM_HEAP_MARK;
sl@0	1932	TVerdict result = EPass;
sl@0	1933	TInt srcBufferSize;
sl@0	1934	TInt sinkBufferSize;
sl@0	1935	const TReal KExpectedSNRatioDb = 30.0; //30 db for now
sl@0	1936
sl@0	1937	//[ Create coder and decoder codecs ]
sl@0	1938	CMMFPcm16ToImaAdpcmHwDevice* pHwDevice = CMMFPcm16ToImaAdpcmHwDevice::NewL();
sl@0	1939	CleanupStack::PushL( pHwDevice );
sl@0	1940
sl@0	1941	CMMFSwCodec& theCodec = pHwDevice->Codec();
sl@0	1942
sl@0	1943	CMMFImaAdpcmToPcm16CodecHwDevice* pHwDecoder = CMMFImaAdpcmToPcm16CodecHwDevice::NewL();
sl@0	1944	CleanupStack::PushL( pHwDecoder );
sl@0	1945
sl@0	1946	CMMFSwCodec& theDecoder = pHwDecoder->Codec();
sl@0	1947
sl@0	1948	//[ Create data buffers with position != 0]
sl@0	1949	srcBufferSize = 100; // arbitrary non zero size
sl@0	1950	sinkBufferSize = 100;
sl@0	1951	CMMFDescriptorBuffer* pSrcBuffer = CMMFDescriptorBuffer::NewL( srcBufferSize );
sl@0	1952	CleanupStack::PushL( pSrcBuffer );
sl@0	1953
sl@0	1954	CMMFDescriptorBuffer* pSinkBuffer = CMMFDescriptorBuffer::NewL( sinkBufferSize );
sl@0	1955	CleanupStack::PushL( pSinkBuffer );
sl@0	1956
sl@0	1957	//[ trap & check error code ]
sl@0	1958	TInt errCode;
sl@0	1959	pSrcBuffer->Data().SetLength(srcBufferSize);
sl@0	1960	pSinkBuffer->Data().SetLength(sinkBufferSize);
sl@0	1961	pSrcBuffer->SetPosition(1);
sl@0	1962	TRAP( errCode, theCodec.ProcessL(pSrcBuffer, pSinkBuffer));
sl@0	1963	if( errCode != KErrArgument )
sl@0	1964	{
sl@0	1965	result = EFail;
sl@0	1966	return result;
sl@0	1967	}
sl@0	1968
sl@0	1969	//[set position of sink buffer to nonzero value]
sl@0	1970	pSrcBuffer->SetPosition(0);
sl@0	1971	pSinkBuffer->SetPosition(1);
sl@0	1972	TRAP( errCode, theCodec.ProcessL(pSrcBuffer, pSinkBuffer));
sl@0	1973	if( errCode != KErrArgument )
sl@0	1974	{
sl@0	1975	result = EFail;
sl@0	1976	return result;
sl@0	1977	}
sl@0	1978
sl@0	1979	//[set position of sink and src to nonzero value ]
sl@0	1980	pSrcBuffer->SetPosition(1);
sl@0	1981	pSinkBuffer->SetPosition(1);
sl@0	1982	TRAP( errCode, theCodec.ProcessL(pSrcBuffer, pSinkBuffer));
sl@0	1983	if( errCode != KErrArgument )
sl@0	1984	{
sl@0	1985	result = EFail;
sl@0	1986	return result;
sl@0	1987	}
sl@0	1988
sl@0	1989	//[ reset the position of both buffers to zero ]
sl@0	1990	pSrcBuffer->SetPosition(0);
sl@0	1991	pSinkBuffer->SetPosition(0);
sl@0	1992	//[ set the src/sink buffer sizes to src and sink
sl@0	1993	// buffer sizes and fill src with data ]
sl@0	1994	CleanupStack::PopAndDestroy(2, pSrcBuffer); // pSrcBuffer, pSinkBuffer
sl@0	1995
sl@0	1996	//[Create Source & Sink and fill source data in ]
sl@0	1997	srcBufferSize = theCodec.SourceBufferSize();
sl@0	1998	pSrcBuffer = CMMFDescriptorBuffer::NewL( srcBufferSize );
sl@0	1999	CleanupStack::PushL( pSrcBuffer );
sl@0	2000
sl@0	2001	CMMFDescriptorBuffer* pDecodedBuffer = CMMFDescriptorBuffer::NewL( srcBufferSize );
sl@0	2002	CleanupStack::PushL( pDecodedBuffer );
sl@0	2003
sl@0	2004	sinkBufferSize = theCodec.SinkBufferSize();
sl@0	2005	pSinkBuffer = CMMFDescriptorBuffer::NewL( sinkBufferSize );
sl@0	2006	CleanupStack::PushL( pSinkBuffer );
sl@0	2007
sl@0	2008	pSrcBuffer->Data().SetLength(srcBufferSize);
sl@0	2009	pDecodedBuffer->Data().SetLength(srcBufferSize);
sl@0	2010	pSinkBuffer->Data().SetLength(sinkBufferSize);
sl@0	2011
sl@0	2012	//[ fill src buffer with ramp]
sl@0	2013	FillSrcBufferL( *pSrcBuffer );
sl@0	2014	// encode and decode the data
sl@0	2015	theCodec.ProcessL(pSrcBuffer, pSinkBuffer);
sl@0	2016	theDecoder.ProcessL( pSinkBuffer, pDecodedBuffer );
sl@0	2017
sl@0	2018	if(!CompareResults( KExpectedSNRatioDb, pSrcBuffer, pDecodedBuffer))
sl@0	2019	{
sl@0	2020	//Test has failed because sn ratio was not good enough
sl@0	2021	result = EFail;
sl@0	2022	}
sl@0	2023
sl@0	2024	//[ clean up ]
sl@0	2025	CleanupStack::PopAndDestroy( 5, pHwDevice ); // pHwDevice, pHwDecoder, pSrcBuffer, pDecodedBuffer, pSinkBuffer
sl@0	2026
sl@0	2027	__MM_HEAP_MARKEND;
sl@0	2028	return result;
sl@0	2029	}
sl@0	2030
sl@0	2031	/**
sl@0	2032	*
sl@0	2033	* DoTestStepPreambleL
sl@0	2034	*
sl@0	2035	**/
sl@0	2036	TVerdict CTestIMaadCodec::DoTestStepPreambleL(void)
sl@0	2037	{
sl@0	2038	return EPass;
sl@0	2039	}
sl@0	2040
sl@0	2041	/**
sl@0	2042	*
sl@0	2043	* DoTestStepPostambleL
sl@0	2044	*
sl@0	2045	**/
sl@0	2046	TVerdict CTestIMaadCodec::DoTestStepPostambleL(void)
sl@0	2047	{
sl@0	2048	return EPass;
sl@0	2049	}
sl@0	2050
sl@0	2051
sl@0	2052	/**
sl@0	2053	*
sl@0	2054	* FillSrcBuffer
sl@0	2055	* @param aBuffer
sl@0	2056	* This function fills the buffer with a ramp of linear pcm16 data
sl@0	2057	*
sl@0	2058	**/
sl@0	2059	void CTestIMaadCodec::FillSrcBufferL( CMMFDescriptorBuffer& aBuffer )
sl@0	2060	{
sl@0	2061	TInt slope = 2;
sl@0	2062	TInt dataLength = aBuffer.Data().Length();
sl@0	2063	TUint8* pData = const_cast<TUint8*>(aBuffer.Data().Ptr());
sl@0	2064	TInt noPc16Samples = dataLength/2;
sl@0	2065	ASSERT( noPc16Samples*slope < 32768 );
sl@0	2066	for( TInt16 count = 0; count < noPc16Samples ; count++ )
sl@0	2067	{
sl@0	2068	TInt16 pcmSample = static_cast<TInt16>( count * slope);
sl@0	2069	*pData++ = static_cast<TUint8>( pcmSample & 0xFF );
sl@0	2070	*pData++ = static_cast<TUint8>( ( pcmSample >> 8 ));
sl@0	2071	}
sl@0	2072	}
sl@0	2073
sl@0	2074	/**
sl@0	2075	*
sl@0	2076	* CompareResults
sl@0	2077	* @param aExpectedSNRatioDb
sl@0	2078	* @param aSrcBuffer
sl@0	2079	* @param aSinkBuffer
sl@0	2080	* @result TBool
sl@0	2081	* This function returns True if the computed Signal to Noise Ratio
sl@0	2082	* is Greater than or equal to the expected signal to noise ratio.
sl@0	2083	* The function will also return EFalse if any of the preconditions
sl@0	2084	* are violated.
sl@0	2085	* @precondition aSrcBuffer, aSinkBuffer are not NULL
sl@0	2086	* @precondition aSrcBuffer data lenegth == aSinkBuffer data length
sl@0	2087	* @precondition the data buffers contain pcm16 data
sl@0	2088	*
sl@0	2089	**/
sl@0	2090	TBool CTestIMaadCodec::CompareResults( TReal aExpectedSNRatioDb,
sl@0	2091	CMMFDescriptorBuffer* aSrcBuffer,
sl@0	2092	CMMFDescriptorBuffer* aSinkBuffer)
sl@0	2093	{
sl@0	2094	TBool result = EFalse;
sl@0	2095
sl@0	2096	//[ precondition pointers are not NULL ]
sl@0	2097	if( !aSrcBuffer \|\| !aSinkBuffer )
sl@0	2098	return result;
sl@0	2099
sl@0	2100	//[ precondition buffer lengths are equal ]
sl@0	2101	TInt length = aSrcBuffer->Data().Length();
sl@0	2102	if( length != aSinkBuffer->Data().Length() )
sl@0	2103	return result;
sl@0	2104
sl@0	2105	// buffers must be of even length
sl@0	2106	if( !(length % sizeof(TInt16) == 0 ))
sl@0	2107	return result;
sl@0	2108
sl@0	2109	TInt pcmLength = length/2;
sl@0	2110	TReal sumSignalSquared = 0.0;
sl@0	2111	TReal sumNoiseSquared = 0.0;
sl@0	2112	TUint8* pSrcData = const_cast<TUint8*>(aSrcBuffer->Data().Ptr());
sl@0	2113	TUint8* pDecodeData = const_cast<TUint8*>(aSinkBuffer->Data().Ptr());
sl@0	2114	TInt16 sampleOriginal;
sl@0	2115	TInt16 sampleDecode;
sl@0	2116	for( TInt count = 0; count < pcmLength; count++ )
sl@0	2117	{
sl@0	2118	sampleOriginal = static_cast<TInt16>( pSrcData[0] &KAndMask8bit);
sl@0	2119	sampleOriginal \|= static_cast<TInt16>((pSrcData[1] << 8 ));
sl@0	2120	sampleDecode = static_cast<TInt16>( pDecodeData[0] &KAndMask8bit);
sl@0	2121	sampleDecode \|= static_cast<TInt16>((pDecodeData[1] << 8 ));
sl@0	2122	pSrcData+=2;
sl@0	2123	pDecodeData+= 2;
sl@0	2124	sumSignalSquared += sampleOriginal * sampleOriginal;
sl@0	2125	TInt noise = sampleOriginal - sampleDecode ;
sl@0	2126	sumNoiseSquared += noise * noise;
sl@0	2127	}
sl@0	2128
sl@0	2129	//[ if the noise is low the signals are equivalent and
sl@0	2130	// overflow can be avoided ]
sl@0	2131	if( sumNoiseSquared < 0.001 )
sl@0	2132	{
sl@0	2133	result = ETrue;
sl@0	2134	return result;
sl@0	2135	}
sl@0	2136	TReal computedSNRatioDb;
sl@0	2137	Math::Log( computedSNRatioDb, sumSignalSquared/sumNoiseSquared );
sl@0	2138	computedSNRatioDb *= 10;
sl@0	2139
sl@0	2140	//[ compare claculated s/n ratio against expected ]
sl@0	2141	if( computedSNRatioDb >= aExpectedSNRatioDb )
sl@0	2142	result = ETrue;
sl@0	2143
sl@0	2144	return result;
sl@0	2145	}

author	sl
	Tue, 10 Jun 2014 14:32:02 +0200
changeset 1	260cb5ec6c19
permissions	-rw-r--r--