ErrVal MbDecoder::xDecodeMbPCM( MbDataAccess& rcMbDataAccess, YuvMbBuffer& rcRecYuvBuffer )
{
Pel* pucSrc = rcMbDataAccess.getMbTCoeffs().getPelBuffer();
Pel* pucDest = rcRecYuvBuffer.getMbLumAddr();
Int iStride = rcRecYuvBuffer.getLStride();
Int n;
for( n = 0; n < 16; n++ )
{
::memcpy( pucDest, pucSrc, 16 );
pucSrc += 16;
pucDest += iStride;
}
pucDest = rcRecYuvBuffer.getMbCbAddr();
iStride = rcRecYuvBuffer.getCStride();
for( n = 0; n < 8; n++ )
{
::memcpy( pucDest, pucSrc, 8 );
pucSrc += 8;
pucDest += iStride;
}
pucDest = rcRecYuvBuffer.getMbCrAddr();
for( n = 0; n < 8; n++ )
{
::memcpy( pucDest, pucSrc, 8 );
pucSrc += 8;
pucDest += iStride;
}
return Err::m_nOK;
}
Void IntMbTempData::copyResidualDataTo( MbDataAccess& rcMbDataAccess )
{
rcMbDataAccess.getMbData ().setBCBP ( getBCBP () );
rcMbDataAccess.getMbData ().setMbExtCbp ( getMbExtCbp () );
rcMbDataAccess.getMbData ().setQp ( getQp () );
rcMbDataAccess.getMbTCoeffs ().copyFrom ( *this );
rcMbDataAccess.getMbData ().setTransformSize8x8 ( isTransformSize8x8 () );
rcMbDataAccess.getMbData ().setResidualPredFlags ( getResidualPredFlags() );
}
Void IntMbTempData::copyTo( MbDataAccess& rcMbDataAccess )
{
rcMbDataAccess.getMbData() .copyFrom( *this );
rcMbDataAccess.getMbTCoeffs() .copyFrom( *this );
rcMbDataAccess.getMbMvdData(LIST_0) .copyFrom( m_acMbMvdData[LIST_0] );
rcMbDataAccess.getMbMotionData(LIST_0).copyFrom( m_acMbMotionData[LIST_0] );
if( rcMbDataAccess.getSH().isBSlice() )
{
rcMbDataAccess.getMbMvdData(LIST_1) .copyFrom( m_acMbMvdData[LIST_1] );
rcMbDataAccess.getMbMotionData(LIST_1).copyFrom( m_acMbMotionData[LIST_1] );
}
}
ErrVal MbCoder::encode( MbDataAccess& rcMbDataAccess,
MbDataAccess* pcMbDataAccessBase,
Int iSpatialScalabilityType,
Bool bTerminateSlice )
{
ROF( m_bInitDone );
//===== skip flag =====
Bool bIsCoded = ! rcMbDataAccess.isSkippedMb();
RNOK( m_pcMbSymbolWriteIf->skipFlag( rcMbDataAccess, false ) );
if( bIsCoded )
{
//===== base layer mode flag and base layer refinement flag =====
if( rcMbDataAccess.getSH().getBaseLayerId() != MSYS_UINT_MAX )
{
if ( pcMbDataAccessBase->getMbData().getInCropWindowFlag() == true )// TMM_ESS
{
if( rcMbDataAccess.getSH().getAdaptivePredictionFlag() )
{
RNOK ( m_pcMbSymbolWriteIf->BLSkipFlag( rcMbDataAccess ) );
}
else
{
ROF( rcMbDataAccess.getMbData().getBLSkipFlag () );
}
// TMM_ESS {
}
else // of if ( rcMbDataAccess.getMbData().getInCropWindowFlag() == true )
{
ROT ( rcMbDataAccess.getMbData().getBLSkipFlag () );
}
// TMM_ESS }
}
else
{
ROT ( rcMbDataAccess.getMbData().getBLSkipFlag () );
}
//===== macroblock mode =====
if( ! rcMbDataAccess.getMbData().getBLSkipFlag() )
{
MbMode eMbModeOrg = rcMbDataAccess.getMbData().getMbMode();
MbMode eMbModeSet = ( eMbModeOrg == INTRA_BL ? INTRA_4X4 : eMbModeOrg );
rcMbDataAccess.getMbData().setMbMode( eMbModeSet );
RNOK( m_pcMbSymbolWriteIf->mbMode( rcMbDataAccess ) );
rcMbDataAccess.getMbData().setMbMode( eMbModeOrg );
}
//--- reset motion pred flags ---
if( rcMbDataAccess.getMbData().getBLSkipFlag()
|| rcMbDataAccess.getMbData().isIntra() || rcMbDataAccess.getMbData().getMbMode() == MODE_SKIP )
{
rcMbDataAccess.getMbMotionData( LIST_0 ).setMotPredFlag( false );
rcMbDataAccess.getMbMotionData( LIST_1 ).setMotPredFlag( false );
}
else if( rcMbDataAccess.getSH().isInterB() )
{
for( B8x8Idx c8x8Idx; c8x8Idx.isLegal(); c8x8Idx++ )
{
if( BLK_SKIP == rcMbDataAccess.getMbData().getBlkMode ( c8x8Idx.b8x8Index() ) ||
!rcMbDataAccess .getMbData().isBlockFwdBwd( c8x8Idx.b8x8Index(), LIST_0 ) )
{
rcMbDataAccess.getMbMotionData( LIST_0 ).setMotPredFlag( false, c8x8Idx );
}
if( BLK_SKIP == rcMbDataAccess.getMbData().getBlkMode ( c8x8Idx.b8x8Index() ) ||
!rcMbDataAccess .getMbData().isBlockFwdBwd( c8x8Idx.b8x8Index(), LIST_1 ) )
{
rcMbDataAccess.getMbMotionData( LIST_1 ).setMotPredFlag( false, c8x8Idx );
}
}
}
//===== prediction info =====
if( ! rcMbDataAccess.getMbData().getBLSkipFlag() )
{
//===== BLOCK MODES =====
if( rcMbDataAccess.getMbData().isInter8x8() )
{
RNOK( m_pcMbSymbolWriteIf->blockModes( rcMbDataAccess ) );
}
if( rcMbDataAccess.getMbData().isPCM() )
{
//===== PCM SAMPLES =====
RNOK( m_pcMbSymbolWriteIf->samplesPCM( rcMbDataAccess ) );
}
else if( rcMbDataAccess.getMbData().isIntra() )
{
//===== INTRA PREDICTION MODES =====
RNOK( xWriteIntraPredModes( rcMbDataAccess ) );
}
else
{
//===== MOTION INFORMATION =====
MbMode eMbMode = rcMbDataAccess.getMbData().getMbMode();
if( rcMbDataAccess.getSH().isInterB() )
{
RNOK( xWriteMotionPredFlags( rcMbDataAccess, eMbMode, LIST_0 ) );
RNOK( xWriteMotionPredFlags( rcMbDataAccess, eMbMode, LIST_1 ) );
RNOK( xWriteReferenceFrames( rcMbDataAccess, eMbMode, LIST_0 ) );
RNOK( xWriteReferenceFrames( rcMbDataAccess, eMbMode, LIST_1 ) );
RNOK( xWriteMotionVectors ( rcMbDataAccess, eMbMode, LIST_0 ) );
RNOK( xWriteMotionVectors ( rcMbDataAccess, eMbMode, LIST_1 ) );
}
else
{
RNOK( xWriteMotionPredFlags( rcMbDataAccess, eMbMode, LIST_0 ) );
RNOK( xWriteReferenceFrames( rcMbDataAccess, eMbMode, LIST_0 ) );
RNOK( xWriteMotionVectors ( rcMbDataAccess, eMbMode, LIST_0 ) );
}
}
}
//===== TEXTURE =====
if( ! rcMbDataAccess.getMbData().isPCM() )
{
Bool bTrafo8x8Flag = ( rcMbDataAccess.getSH().getPPS().getTransform8x8ModeFlag() &&
( rcMbDataAccess.getMbData().getBLSkipFlag() ||
( rcMbDataAccess.getMbData().is8x8TrafoFlagPresent() &&
!rcMbDataAccess.getMbData().isIntra4x4() ) ) );
//-- JVT-R091
RNOK( xWriteTextureInfo( rcMbDataAccess, pcMbDataAccessBase, rcMbDataAccess.getMbTCoeffs(), bTrafo8x8Flag ) );
//--
}
}
//--- write terminating bit ---
RNOK( m_pcMbSymbolWriteIf->terminatingBit ( bTerminateSlice ? 1:0 ) );
if( bTerminateSlice )
{
RNOK( m_pcMbSymbolWriteIf->finishSlice() );
}
return Err::m_nOK;
}
ErrVal
MbParser::read( MbDataAccess& rcMbDataAccess,
UInt uiNumMbRead,
Bool& rbEndOfSlice,
UInt& ruiNextSkippedVLC )
{
const CommonMainH264* pcMainH264 = CommonMain::getMainH264();
// FIXME:
if (pcMainH264->getCurrentPictureId() == 1 && pcMainH264->getCurrentLayerId() == 16 && rcMbDataAccess.getMbData().getMbAddr() == 76)
{
int a = 0;
}
ROF( m_bInitDone );
ROTRS( xCheckSkipSliceMb( rcMbDataAccess, uiNumMbRead, rbEndOfSlice ), Err::m_nOK );
Bool bIsCoded = true;
if( m_pcMbSymbolReadIf->isMbSkipped( rcMbDataAccess, ruiNextSkippedVLC ) )
{
bIsCoded = false;
rcMbDataAccess.getMbTCoeffs().clear();
rcMbDataAccess.getMbData().clearIntraPredictionModes( true );
RNOK( xSkipMb( rcMbDataAccess ) );
rcMbDataAccess.getMbData().setBLSkipFlag( false );
rcMbDataAccess.getMbData().setResidualPredFlag( rcMbDataAccess.getMbData().getInCropWindowFlag() ? rcMbDataAccess.getSH().getDefaultResidualPredictionFlag() : false );
if( rcMbDataAccess.getSH().isBSlice() )
{
rcMbDataAccess.getMbData().setFwdBwd( 0x3333 );
rcMbDataAccess.getMbMotionData( LIST_0 ).clear( RefIdxValues(1) );
rcMbDataAccess.getMbMvdData ( LIST_0 ).clear();
rcMbDataAccess.getMbMotionData( LIST_1 ).clear( RefIdxValues(1) );
rcMbDataAccess.getMbMvdData ( LIST_1 ).clear();
}
else
{
rcMbDataAccess.getMbData().setFwdBwd( 0x1111 );
rcMbDataAccess.getMbMotionData( LIST_0 ).clear( RefIdxValues(1) );
rcMbDataAccess.getMbMvdData ( LIST_0 ).clear();
}
rcMbDataAccess.resetQp(); // set QP to that of the last macroblock
}
if( bIsCoded )
{
if( rcMbDataAccess.getSH().isMbaffFrame() && ( rcMbDataAccess.isTopMb() || m_bPrevIsSkipped ) )
{
RNOK( m_pcMbSymbolReadIf->fieldFlag( rcMbDataAccess) );
}
Bool bBaseLayerAvailable = ! rcMbDataAccess.getSH().getNoInterLayerPredFlag();
//===== base layer mode flag and base layer refinement flag =====
if( bBaseLayerAvailable )
{
if ( rcMbDataAccess.getMbData().getInCropWindowFlag() == true )
{
if( rcMbDataAccess.getSH().getAdaptiveBaseModeFlag() )
{
m_pcMbSymbolReadIf->isBLSkipped( rcMbDataAccess );
}
else
{
rcMbDataAccess.getMbData().setBLSkipFlag( rcMbDataAccess.getSH().getDefaultBaseModeFlag() );
}
}
else
{
rcMbDataAccess.getMbData().setBLSkipFlag( false );
}
}
else
{
rcMbDataAccess.getMbData().setBLSkipFlag( false );
}
if( rcMbDataAccess.getSH().getStoreRefBasePicFlag() && rcMbDataAccess.getSH().getQualityId() > 0 && rcMbDataAccess.getMbData().getBLSkipFlag() == false )
{
printf("Conformance Issue: base_mode_flag = 0 in enhancement layer MGS key picture\n");
}
//===== macroblock mode =====
if( ! rcMbDataAccess.getMbData().getBLSkipFlag() )
{
DECRNOK( m_pcMbSymbolReadIf->mbMode( rcMbDataAccess ) );
}
if( rcMbDataAccess.getMbData().getBLSkipFlag() )
{
//===== copy motion data from base layer ======
rcMbDataAccess.getMbMvdData( LIST_0 ).clear();
rcMbDataAccess.getMbMvdData( LIST_1 ).clear();
rcMbDataAccess.getMbData().setBLSkipFlag( true );
}
else
{
//===== BLOCK MODES =====
if( rcMbDataAccess.getMbData().isInter8x8() )
{
DECRNOK( m_pcMbSymbolReadIf->blockModes( rcMbDataAccess ) );
//===== set motion data for skip block mode =====
UInt uiFwdBwd = 0;
for( B8x8Idx c8x8Idx; c8x8Idx.isLegal(); c8x8Idx++ )
{
UInt uiBlkFwdBwd = rcMbDataAccess.getMbData().getBlockFwdBwd( c8x8Idx.b8x8Index() );
if( rcMbDataAccess.getMbData().getBlkMode( c8x8Idx.b8x8Index() ) == BLK_SKIP )
{
uiBlkFwdBwd = 3;
rcMbDataAccess.getMbMotionData( LIST_0 ).setRefIdx( 1, c8x8Idx.b8x8() );
rcMbDataAccess.getMbMotionData( LIST_1 ).setRefIdx( 1, c8x8Idx.b8x8() );
rcMbDataAccess.getMbMvdData ( LIST_0 ).setAllMv ( Mv::ZeroMv(), c8x8Idx.b8x8() );
rcMbDataAccess.getMbMvdData ( LIST_1 ).setAllMv ( Mv::ZeroMv(), c8x8Idx.b8x8() );
}
uiFwdBwd |= ( uiBlkFwdBwd << ( c8x8Idx.b8x8Index() * 4 ) );
}
rcMbDataAccess.getMbData().setFwdBwd( uiFwdBwd );
}
rcMbDataAccess.resetQp(); // set QP to that of the last macroblock
//===== MOTION DATA =====
MbMode eMbMode = rcMbDataAccess.getMbData().getMbMode();
if( rcMbDataAccess.getMbData().isIntra() )
{
//===== clear mtoion data for intra blocks =====
rcMbDataAccess.getMbMotionData( LIST_0 ).clear( BLOCK_NOT_PREDICTED );
rcMbDataAccess.getMbMvdData ( LIST_0 ).clear();
if( rcMbDataAccess.getSH().isBSlice() )
{
rcMbDataAccess.getMbMotionData( LIST_1 ).clear( BLOCK_NOT_PREDICTED );
rcMbDataAccess.getMbMvdData ( LIST_1 ).clear();
}
}
else if( eMbMode == MODE_SKIP )
{
if( rcMbDataAccess.getSH().isBSlice() )
{
rcMbDataAccess.getMbData().setFwdBwd( 0x3333 );
rcMbDataAccess.getMbMotionData( LIST_0 ).clear( RefIdxValues(1) );
rcMbDataAccess.getMbMvdData ( LIST_0 ).clear();
rcMbDataAccess.getMbMotionData( LIST_1 ).clear( RefIdxValues(1) );
rcMbDataAccess.getMbMvdData ( LIST_1 ).clear();
}
else
{
rcMbDataAccess.getMbData().setFwdBwd( 0x1111 );
rcMbDataAccess.getMbMotionData( LIST_0 ).clear( RefIdxValues(1) );
rcMbDataAccess.getMbMvdData ( LIST_0 ).clear();
rcMbDataAccess.getMbMotionData( LIST_1 ).clear( BLOCK_NOT_PREDICTED );
rcMbDataAccess.getMbMvdData ( LIST_1 ).clear();
}
}
else
{
if( rcMbDataAccess.getSH().isBSlice() )
{
DECRNOK( xReadMotionPredFlags ( rcMbDataAccess, eMbMode, LIST_0 ) );
DECRNOK( xReadMotionPredFlags ( rcMbDataAccess, eMbMode, LIST_1 ) );
DECRNOK( xReadReferenceIndices ( rcMbDataAccess, eMbMode, LIST_0 ) );
DECRNOK( xReadReferenceIndices ( rcMbDataAccess, eMbMode, LIST_1 ) );
DECRNOK( xReadMotionVectors ( rcMbDataAccess, eMbMode, LIST_0 ) );
DECRNOK( xReadMotionVectors ( rcMbDataAccess, eMbMode, LIST_1 ) );
}
else
{
DECRNOK( xReadMotionPredFlags ( rcMbDataAccess, eMbMode, LIST_0 ) );
DECRNOK( xReadReferenceIndices ( rcMbDataAccess, eMbMode, LIST_0 ) );
DECRNOK( xReadMotionVectors ( rcMbDataAccess, eMbMode, LIST_0 ) );
}
}
}
//===== TEXTURE INFO =====
if( rcMbDataAccess.getMbData().isPCM() )
{
DECRNOK( m_pcMbSymbolReadIf->samplesPCM( rcMbDataAccess ) );
}
else
{
if( ! rcMbDataAccess.getMbData().getBLSkipFlag() )
{
DECRNOK( xReadIntraPredModes( rcMbDataAccess ) );
}
Bool bTrafo8x8Flag = ( rcMbDataAccess.getSH().getPPS().getTransform8x8ModeFlag() &&
( rcMbDataAccess.getMbData().getBLSkipFlag() ||
( rcMbDataAccess.getMbData().is8x8TrafoFlagPresent( rcMbDataAccess.getSH().getSPS().getDirect8x8InferenceFlag() ) &&
!rcMbDataAccess.getMbData().isIntra4x4() ) ) );
bBaseLayerAvailable = ! rcMbDataAccess.getSH().getNoInterLayerPredFlag();
DECRNOK( xReadTextureInfo( rcMbDataAccess,
bTrafo8x8Flag,
bBaseLayerAvailable,
rcMbDataAccess.getSH().getScanIdxStart(),
rcMbDataAccess.getSH().getScanIdxStop() ) );
}
}
m_bPrevIsSkipped = ! bIsCoded;
if( rcMbDataAccess.getSH().isMbaffFrame() && ( rcMbDataAccess.isTopMb() ) )
{
rbEndOfSlice = false;
return Err::m_nOK;
}
//===== terminating bits =====
rbEndOfSlice = m_pcMbSymbolReadIf->isEndOfSlice();
return Err::m_nOK;
}
ErrVal
SliceEncoder::xAddTCoeffs2( MbDataAccess& rcMbDataAccess, MbDataAccess& rcMbDataAccessBase )
{
if( rcMbDataAccess.getMbData().isPCM() )
{
TCoeff* pSrc = rcMbDataAccessBase.getMbTCoeffs().getTCoeffBuffer();
TCoeff* pDes = rcMbDataAccess .getMbTCoeffs().getTCoeffBuffer();
for( UInt ui = 0; ui < 384; ui++, pSrc++, pDes++ )
{
ROT( pDes->getLevel() );
pDes->setLevel( pSrc->getLevel() );
}
ROT( rcMbDataAccess.getMbData().getMbExtCbp() );
return Err::m_nOK;
}
UInt uiBCBP = 0;
UInt uiCoded = 0;
Bool bCoded = false;
Bool bChromaAC = false;
Bool bChromaDC = false;
// Add the luma coefficients and track the new BCBP
if( rcMbDataAccess.getMbData().isTransformSize8x8() )
{
for( B8x8Idx c8x8Idx; c8x8Idx.isLegal(); c8x8Idx++ )
{
bCoded = false;
m_pcTransform->addPrediction8x8Blk( rcMbDataAccess.getMbTCoeffs().get8x8( c8x8Idx ),
rcMbDataAccessBase.getMbTCoeffs().get8x8( c8x8Idx ),
rcMbDataAccess.getMbData().getQp(),
rcMbDataAccessBase.getMbData().getQp(), bCoded );
if( rcMbDataAccess.getMbData().isIntra16x16() )
AOT(1);
if( bCoded )
uiBCBP |= (0x33 << c8x8Idx.b4x4());
}
}
else
{
for( B4x4Idx cIdx; cIdx.isLegal(); cIdx++ )
{
uiCoded = 0;
m_pcTransform->addPrediction4x4Blk( rcMbDataAccess.getMbTCoeffs().get( cIdx ),
rcMbDataAccessBase.getMbTCoeffs().get( cIdx ),
rcMbDataAccess.getMbData().getQp(),
rcMbDataAccessBase.getMbData().getQp(), uiCoded );
if( rcMbDataAccess.getMbData().isIntra16x16() )
{
if( *(rcMbDataAccess.getMbTCoeffs().get( cIdx )) )
uiCoded--;
}
if( uiCoded )
uiBCBP |= 1<<cIdx;
}
if( rcMbDataAccess.getMbData().isIntra16x16() )
{
uiBCBP = uiBCBP?((1<<16)-1):0;
}
}
// Add the chroma coefficients and update the BCBP
m_pcTransform->addPredictionChromaBlocks( rcMbDataAccess.getMbTCoeffs().get( CIdx(0) ),
rcMbDataAccessBase.getMbTCoeffs().get( CIdx(0) ),
rcMbDataAccess.getSH().getCbQp( rcMbDataAccess.getMbData().getQp() ),
rcMbDataAccess.getSH().getBaseSliceHeader()->getCbQp( rcMbDataAccessBase.getMbData().getQp() ),
bChromaDC, bChromaAC );
m_pcTransform->addPredictionChromaBlocks( rcMbDataAccess.getMbTCoeffs().get( CIdx(4) ),
rcMbDataAccessBase.getMbTCoeffs().get( CIdx(4) ),
rcMbDataAccess.getSH().getCrQp( rcMbDataAccess.getMbData().getQp() ),
rcMbDataAccess.getSH().getBaseSliceHeader()->getCrQp( rcMbDataAccessBase.getMbData().getQp() ),
bChromaDC, bChromaAC );
uiBCBP |= (bChromaAC?2:(bChromaDC?1:0))<<16;
// Update the CBP
rcMbDataAccess.getMbData().setAndConvertMbExtCbp( uiBCBP );
// Update the Intra16x16 mode
if( rcMbDataAccess.getMbData().isIntra16x16() )
{
UInt uiMbType = INTRA_4X4 + 1;
UInt uiPredMode = rcMbDataAccess.getMbData().intraPredMode();
UInt uiChromaCbp = uiBCBP>>16;
Bool bACcoded = (uiBCBP && ((1<<16)-1));
uiMbType += uiPredMode;
uiMbType += ( bACcoded ) ? 12 : 0;
uiMbType += uiChromaCbp << 2;
rcMbDataAccess.getMbData().setMbMode( MbMode(uiMbType) );
// Sanity checks
if( rcMbDataAccess.getMbData().intraPredMode() != uiPredMode )
AOT(1);
if( rcMbDataAccess.getMbData().getCbpChroma16x16() != uiChromaCbp )
AOT(1);
if( rcMbDataAccess.getMbData().isAcCoded() != bACcoded )
AOT(1);
}
ErrVal MbDecoder::xDecodeMbPCM( MbDataAccess& rcMbDataAccess, IntYuvPicBuffer *pcRecYuvBuffer )
{
Pel* pucSrc = rcMbDataAccess.getMbTCoeffs().getPelBuffer();
XPel* pucDest = pcRecYuvBuffer->getMbLumAddr();
Int iStride = pcRecYuvBuffer->getLStride();
UInt uiDelta = 1;
Int n, m, n1, m1, dest;
for( n = 0; n < 16; n+=uiDelta )
{
for( m = 0; m < 16; m+=uiDelta )
{
dest = *pucSrc++;
for( n1=0; n1< +(Int)uiDelta; n1++ )
for( m1=m; m1<m+(Int)uiDelta; m1++ )
{
pucDest[m1+n1*iStride] = dest;
}
}
pucDest += uiDelta*iStride;
}
pucDest = pcRecYuvBuffer->getMbCbAddr();
iStride = pcRecYuvBuffer->getCStride();
for( n = 0; n < 8; n+=uiDelta )
{
for( m = 0; m < 8; m+=uiDelta )
{
dest = *pucSrc++;
for( n1=0; n1< +(Int)uiDelta; n1++ )
for( m1=m; m1<m+(Int)uiDelta; m1++ )
{
pucDest[m1+n1*iStride] = dest;
}
}
pucDest += uiDelta*iStride;
}
pucDest = pcRecYuvBuffer->getMbCrAddr();
for( n = 0; n < 8; n+=uiDelta )
{
for( m = 0; m < 8; m+=uiDelta )
{
dest = *pucSrc++;
for( n1=0; n1< +(Int)uiDelta; n1++ )
for( m1=m; m1<m+(Int)uiDelta; m1++ )
{
pucDest[m1+n1*iStride] = dest;
}
}
pucDest += uiDelta*iStride;
}
return Err::m_nOK;
}