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/** \file QuantRDOQ.cpp
\brief transform and quantization class
*/
#include "QuantRDOQ.h"
#include "UnitTools.h"
#include "ContextModelling.h"
#include "CodingStructure.h"
#include "CrossCompPrediction.h"
#include "dtrace_next.h"
#include "dtrace_buffer.h"
#include <stdlib.h>
#include <limits>
#include <memory.h>
struct coeffGroupRDStats
{
int iNNZbeforePos0;
double d64CodedLevelandDist; // distortion and level cost only
double d64UncodedDist; // all zero coded block distortion
double d64SigCost;
double d64SigCost_0;
};
//! \ingroup CommonLib
//! \{
// ====================================================================================================================
// Constants
// ====================================================================================================================
// ====================================================================================================================
// Static functions
// ====================================================================================================================
// ====================================================================================================================
// QuantRDOQ class member functions
// ====================================================================================================================
QuantRDOQ::QuantRDOQ( const Quant* other ) : Quant( other )
{
const QuantRDOQ *rdoq = dynamic_cast<const QuantRDOQ*>( other );
CHECK( other && !rdoq, "The RDOQ cast must be successfull!" );
#if HEVC_USE_SCALING_LISTS
xInitScalingList( rdoq );
#endif
}
QuantRDOQ::~QuantRDOQ()
{
#if HEVC_USE_SCALING_LISTS
xDestroyScalingList();
#endif
}
/** Get the best level in RD sense
*
* \returns best quantized transform level for given scan position
*
* This method calculates the best quantized transform level for a given scan position.
*/
inline uint32_t QuantRDOQ::xGetCodedLevel( double& rd64CodedCost,
double& rd64CodedCost0,
double& rd64CodedCostSig,
Intermediate_Int lLevelDouble,
uint32_t uiMaxAbsLevel,
const BinFracBits* fracBitsSig,
const BinFracBits& fracBitsPar,
const BinFracBits& fracBitsGt1,
const BinFracBits& fracBitsGt2,
const int remGt2Bins,
const int remRegBins,
unsigned goRiceZero,
uint16_t ui16AbsGoRice,
int iQBits,
double errorScale,
bool bLast,
bool useLimitedPrefixLength,
const int maxLog2TrDynamicRange
) const
{
double dCurrCostSig = 0;
uint32_t uiBestAbsLevel = 0;
if( !bLast && uiMaxAbsLevel < 3 )
{
rd64CodedCostSig = xGetRateSigCoef( *fracBitsSig, 0 );
rd64CodedCost = rd64CodedCost0 + rd64CodedCostSig;
if( uiMaxAbsLevel == 0 )
{
return uiBestAbsLevel;
}
}
else
{
rd64CodedCost = MAX_DOUBLE;
}
if( !bLast )
{
dCurrCostSig = xGetRateSigCoef( *fracBitsSig, 1 );
}
uint32_t uiMinAbsLevel = ( uiMaxAbsLevel > 1 ? uiMaxAbsLevel - 1 : 1 );
for( int uiAbsLevel = uiMaxAbsLevel; uiAbsLevel >= uiMinAbsLevel ; uiAbsLevel-- )
{
double dErr = double( lLevelDouble - ( Intermediate_Int(uiAbsLevel) << iQBits ) );
double dCurrCost = dErr * dErr * errorScale + xGetICost( xGetICRate( uiAbsLevel, fracBitsPar, fracBitsGt1, fracBitsGt2, remGt2Bins, remRegBins, goRiceZero, ui16AbsGoRice, true, maxLog2TrDynamicRange ) );
dCurrCost += dCurrCostSig;
if( dCurrCost < rd64CodedCost )
{
uiBestAbsLevel = uiAbsLevel;
rd64CodedCost = dCurrCost;
rd64CodedCostSig = dCurrCostSig;
}
}
return uiBestAbsLevel;
}
/** Calculates the cost for specific absolute transform level
* \param uiAbsLevel scaled quantized level
* \param ui16CtxNumOne current ctxInc for coeff_abs_level_greater1 (1st bin of coeff_abs_level_minus1 in AVC)
* \param ui16CtxNumAbs current ctxInc for coeff_abs_level_greater2 (remaining bins of coeff_abs_level_minus1 in AVC)
* \param ui16AbsGoRice Rice parameter for coeff_abs_level_minus3
* \param c1Idx
* \param c2Idx
* \param useLimitedPrefixLength
* \param maxLog2TrDynamicRange
* \returns cost of given absolute transform level
*/
inline int QuantRDOQ::xGetICRate( const uint32_t uiAbsLevel,
const BinFracBits& fracBitsPar,
const BinFracBits& fracBitsGt1,
const BinFracBits& fracBitsGt2,
const int remGt2Bins,
const int remRegBins,
unsigned goRiceZero,
const uint16_t ui16AbsGoRice,
const bool useLimitedPrefixLength,
const int maxLog2TrDynamicRange ) const
{
if( remRegBins < 4 )
{
int iRate = int( xGetIEPRate() ); // cost of sign bit
uint32_t symbol = ( uiAbsLevel == 0 ? goRiceZero : uiAbsLevel <= goRiceZero ? uiAbsLevel-1 : uiAbsLevel );
uint32_t length;
const int threshold = COEF_REMAIN_BIN_REDUCTION;
if( symbol < ( threshold << ui16AbsGoRice ) )
{
length = symbol >> ui16AbsGoRice;
iRate += ( length + 1 + ui16AbsGoRice ) << SCALE_BITS;
}
else if( useLimitedPrefixLength )
{
const uint32_t maximumPrefixLength = ( 32 - ( COEF_REMAIN_BIN_REDUCTION + maxLog2TrDynamicRange ) );
uint32_t prefixLength = 0;
uint32_t suffix = ( symbol >> ui16AbsGoRice ) - COEF_REMAIN_BIN_REDUCTION;
while( ( prefixLength < maximumPrefixLength ) && ( suffix > ( ( 2 << prefixLength ) - 2 ) ) )
{
prefixLength++;
}
const uint32_t suffixLength = ( prefixLength == maximumPrefixLength ) ? ( maxLog2TrDynamicRange - ui16AbsGoRice ) : ( prefixLength + 1/*separator*/ );
iRate += ( COEF_REMAIN_BIN_REDUCTION + prefixLength + suffixLength + ui16AbsGoRice ) << SCALE_BITS;
}
else
{
length = ui16AbsGoRice;
symbol = symbol - ( threshold << ui16AbsGoRice );
while( symbol >= ( 1 << length ) )
{
symbol -= ( 1 << ( length++ ) );
}
iRate += ( threshold + length + 1 - ui16AbsGoRice + length ) << SCALE_BITS;
}
return iRate;
}
int iRate = int( xGetIEPRate() ); // cost of sign bit
const uint32_t cthres = 4;
if( uiAbsLevel >= cthres )
{
uint32_t symbol = ( uiAbsLevel - cthres ) >> 1;
uint32_t length;
const int threshold = COEF_REMAIN_BIN_REDUCTION;
if( symbol < ( threshold << ui16AbsGoRice ) )
{
length = symbol >> ui16AbsGoRice;
iRate += ( length + 1 + ui16AbsGoRice ) << SCALE_BITS;
}
else if( useLimitedPrefixLength )
{
const uint32_t maximumPrefixLength = ( 32 - ( COEF_REMAIN_BIN_REDUCTION + maxLog2TrDynamicRange ) );
uint32_t prefixLength = 0;
uint32_t suffix = ( symbol >> ui16AbsGoRice ) - COEF_REMAIN_BIN_REDUCTION;
while( ( prefixLength < maximumPrefixLength ) && ( suffix > ( ( 2 << prefixLength ) - 2 ) ) )
{
prefixLength++;
}
const uint32_t suffixLength = ( prefixLength == maximumPrefixLength ) ? ( maxLog2TrDynamicRange - ui16AbsGoRice ) : ( prefixLength + 1/*separator*/ );
iRate += ( COEF_REMAIN_BIN_REDUCTION + prefixLength + suffixLength + ui16AbsGoRice ) << SCALE_BITS;
}
else
{
length = ui16AbsGoRice;
symbol = symbol - ( threshold << ui16AbsGoRice );
while( symbol >= ( 1 << length ) )
{
symbol -= ( 1 << ( length++ ) );
}
iRate += ( threshold + length + 1 - ui16AbsGoRice + length ) << SCALE_BITS;
}
iRate += fracBitsGt1.intBits[1];
iRate += fracBitsPar.intBits[( uiAbsLevel - 2 ) & 1];
iRate += fracBitsGt2.intBits[1];
}
else if( uiAbsLevel == 1 )
{
iRate += fracBitsGt1.intBits[0];
}
else if( uiAbsLevel == 2 )
{
iRate += fracBitsGt1.intBits[1];
iRate += fracBitsPar.intBits[0];
iRate += fracBitsGt2.intBits[0];
}
else if( uiAbsLevel == 3 )
{
iRate += fracBitsGt1.intBits[1];
iRate += fracBitsPar.intBits[1];
iRate += fracBitsGt2.intBits[0];
}
else
{
iRate = 0;
}
return iRate;
}
inline double QuantRDOQ::xGetRateSigCoeffGroup( const BinFracBits& fracBitsSigCG, unsigned uiSignificanceCoeffGroup ) const
{
return xGetICost( fracBitsSigCG.intBits[uiSignificanceCoeffGroup] );
}
/** Calculates the cost of signaling the last significant coefficient in the block
* \param uiPosX X coordinate of the last significant coefficient
* \param uiPosY Y coordinate of the last significant coefficient
* \param component colour component ID
* \returns cost of last significant coefficient
*/
/*
* \param uiWidth width of the transform unit (TU)
*/
inline double QuantRDOQ::xGetRateLast( const int* lastBitsX, const int* lastBitsY, unsigned PosX, unsigned PosY ) const
{
uint32_t CtxX = g_uiGroupIdx[PosX];
uint32_t CtxY = g_uiGroupIdx[PosY];
double Cost = lastBitsX[ CtxX ] + lastBitsY[ CtxY ];
if( CtxX > 3 )
{
Cost += xGetIEPRate() * ((CtxX-2)>>1);
}
if( CtxY > 3 )
{
Cost += xGetIEPRate() * ((CtxY-2)>>1);
}
return xGetICost( Cost );
}
inline double QuantRDOQ::xGetRateSigCoef( const BinFracBits& fracBitsSig, unsigned uiSignificance ) const
{
return xGetICost( fracBitsSig.intBits[uiSignificance] );
}
/** Get the cost for a specific rate
* \param dRate rate of a bit
* \returns cost at the specific rate
*/
inline double QuantRDOQ::xGetICost ( double dRate ) const
{
return m_dLambda * dRate;
}
/** Get the cost of an equal probable bit
* \returns cost of equal probable bit
*/
inline double QuantRDOQ::xGetIEPRate ( ) const
{
return 32768;
}
#if HEVC_USE_SCALING_LISTS
/** set quantized matrix coefficient for encode
* \param scalingList quantized matrix address
* \param format chroma format
* \param maxLog2TrDynamicRange
* \param bitDepths reference to bit depth array for all channels
*/
void QuantRDOQ::setScalingList(ScalingList *scalingList, const int maxLog2TrDynamicRange[MAX_NUM_CHANNEL_TYPE], const BitDepths &bitDepths)
{
Quant::setScalingList( scalingList, maxLog2TrDynamicRange, bitDepths );
const int minimumQp = 0;
const int maximumQp = SCALING_LIST_REM_NUM;
for(uint32_t size = 0; size < SCALING_LIST_SIZE_NUM; size++)
{
for(uint32_t list = 0; list < SCALING_LIST_NUM; list++)
{
for(int qp = minimumQp; qp < maximumQp; qp++)
{
// xSetScalingListEnc(scalingList,list,size,qp);
// xSetScalingListDec(*scalingList,list,size,qp);
xSetErrScaleCoeff(list,size, size,qp,maxLog2TrDynamicRange, bitDepths);
}
}
}
}
#if HM_QTBT_AS_IN_JEM_QUANT
#endif
#else
double QuantRDOQ::xGetErrScaleCoeff( const bool needsSqrt2, SizeType width, SizeType height, int qp, const int maxLog2TrDynamicRange, const int channelBitDepth )
{
const int iTransformShift = getTransformShift(channelBitDepth, Size(width, height), maxLog2TrDynamicRange);
#if HM_QTBT_AS_IN_JEM_QUANT
double dErrScale = (double)( 1 << SCALE_BITS ); // Compensate for scaling of bitcount in Lagrange cost function
double dTransShift = (double)iTransformShift + ( needsSqrt2 ? -0.5 : 0.0 );
dErrScale = dErrScale*pow( 2.0, ( -2.0*dTransShift ) ); // Compensate for scaling through forward transform
int QStep = ( needsSqrt2 ? ( ( g_quantScales[qp] * 181 ) >> 7 ) : g_quantScales[qp] );
double finalErrScale = dErrScale / QStep / QStep / (1 << (DISTORTION_PRECISION_ADJUSTMENT(channelBitDepth) << 1));
#else
int errShift = SCALE_BITS - ((iTransformShift + DISTORTION_PRECISION_ADJUSTMENT(channelBitDepth)) << 1);
double dErrScale = exp2( double( errShift ) );
double finalErrScale = dErrScale / double( g_quantScales[qp] * g_quantScales[qp] );
#endif
return finalErrScale;
}
#endif
#if HEVC_USE_SCALING_LISTS
/** set error scale coefficients
* \param list list ID
* \param size
* \param qp quantization parameter
* \param maxLog2TrDynamicRange
* \param bitDepths reference to bit depth array for all channels
*/
void QuantRDOQ::xSetErrScaleCoeff( uint32_t list, uint32_t sizeX, uint32_t sizeY, int qp, const int maxLog2TrDynamicRange[MAX_NUM_CHANNEL_TYPE], const BitDepths &bitDepths )
{
const int width = g_scalingListSizeX[sizeX];
const int height = g_scalingListSizeX[sizeY];
const ChannelType channelType = ( ( list == 0 ) || ( list == MAX_NUM_COMPONENT ) ) ? CHANNEL_TYPE_LUMA : CHANNEL_TYPE_CHROMA;
const int channelBitDepth = bitDepths.recon[channelType];
const int iTransformShift = getTransformShift( channelBitDepth, Size( g_scalingListSizeX[sizeX], g_scalingListSizeX[sizeY] ), maxLog2TrDynamicRange[channelType] ); // Represents scaling through forward transform
uint32_t i, uiMaxNumCoeff = width * height;
int *piQuantcoeff;
double *pdErrScale;
piQuantcoeff = getQuantCoeff( list, qp, sizeX, sizeY );
pdErrScale = xGetErrScaleCoeff( list, sizeX, sizeY, qp );
#if HM_QTBT_AS_IN_JEM_QUANT
double dErrScale = (double)( 1 << SCALE_BITS ); // Compensate for scaling of bitcount in Lagrange cost function
bool needsSqrt2 = TU::needsBlockSizeTrafoScale( Size( g_scalingListSizeX[sizeX], g_scalingListSizeX[sizeY] ) );// ( ( (sizeX+sizeY) & 1 ) !=0 );
double dTransShift = (double)iTransformShift + ( needsSqrt2 ? -0.5 : 0.0 );
dErrScale = dErrScale*pow( 2.0, ( -2.0*dTransShift ) ); // Compensate for scaling through forward transform
for( i = 0; i < uiMaxNumCoeff; i++ )
{
pdErrScale[i] = dErrScale / piQuantcoeff[i] / piQuantcoeff[i]
/ (1 << (DISTORTION_PRECISION_ADJUSTMENT(bitDepths.recon[channelType]) << 1));
}
int QStep = ( needsSqrt2 ? ( ( g_quantScales[qp] * 181 ) >> 7 ) : g_quantScales[qp] );
xGetErrScaleCoeffNoScalingList(list, sizeX, sizeY, qp) =
dErrScale / QStep / QStep / (1 << (DISTORTION_PRECISION_ADJUSTMENT(bitDepths.recon[channelType]) << 1));
#else
int errShift = SCALE_BITS - ((iTransformShift + DISTORTION_PRECISION_ADJUSTMENT(bitDepths.recon[channelType])) << 1);
double dErrScale = exp2( double( errShift ) );
for( i = 0; i < uiMaxNumCoeff; i++ )
{
pdErrScale[i] = dErrScale / double( piQuantcoeff[i] * piQuantcoeff[i] );
}
xGetErrScaleCoeffNoScalingList( list, sizeX, sizeY, qp ) = dErrScale / double( g_quantScales[qp] * g_quantScales[qp] );
#endif
}
/** set flat matrix value to quantized coefficient
*/
void QuantRDOQ::setFlatScalingList(const int maxLog2TrDynamicRange[MAX_NUM_CHANNEL_TYPE], const BitDepths &bitDepths)
{
Quant::setFlatScalingList( maxLog2TrDynamicRange, bitDepths );
const int minimumQp = 0;
const int maximumQp = SCALING_LIST_REM_NUM;
for(uint32_t sizeX = 0; sizeX < SCALING_LIST_SIZE_NUM; sizeX++)
{
for(uint32_t sizeY = 0; sizeY < SCALING_LIST_SIZE_NUM; sizeY++)
{
for(uint32_t list = 0; list < SCALING_LIST_NUM; list++)
{
for(int qp = minimumQp; qp < maximumQp; qp++)
{
xSetErrScaleCoeff( list, sizeX, sizeY, qp, maxLog2TrDynamicRange, bitDepths );
}
}
}
}
}
/** initialization process of scaling list array
*/
void QuantRDOQ::xInitScalingList( const QuantRDOQ* other )
{
m_isErrScaleListOwner = other == nullptr;
for(uint32_t sizeIdX = 0; sizeIdX < SCALING_LIST_SIZE_NUM; sizeIdX++)
{
for(uint32_t sizeIdY = 0; sizeIdY < SCALING_LIST_SIZE_NUM; sizeIdY++)
{
for(uint32_t qp = 0; qp < SCALING_LIST_REM_NUM; qp++)
{
for(uint32_t listId = 0; listId < SCALING_LIST_NUM; listId++)
{
if( m_isErrScaleListOwner )
{
m_errScale[sizeIdX][sizeIdY][listId][qp] = new double[g_scalingListSizeX[sizeIdX] * g_scalingListSizeX[sizeIdY]];
}
else
{
m_errScale[sizeIdX][sizeIdY][listId][qp] = other->m_errScale[sizeIdX][sizeIdY][listId][qp];
}
} // listID loop
}
}
}
}
/** destroy quantization matrix array
*/
void QuantRDOQ::xDestroyScalingList()
{
if( !m_isErrScaleListOwner ) return;
for(uint32_t sizeIdX = 0; sizeIdX < SCALING_LIST_SIZE_NUM; sizeIdX++)
{
for(uint32_t sizeIdY = 0; sizeIdY < SCALING_LIST_SIZE_NUM; sizeIdY++)
{
for(uint32_t listId = 0; listId < SCALING_LIST_NUM; listId++)
{
for(uint32_t qp = 0; qp < SCALING_LIST_REM_NUM; qp++)
{
if(m_errScale[sizeIdX][sizeIdY][listId][qp])
{
delete [] m_errScale[sizeIdX][sizeIdY][listId][qp];
}
}
}
}
}
// Quant::destroyScalingList();
}
#endif
void QuantRDOQ::quant(TransformUnit &tu, const ComponentID &compID, const CCoeffBuf &pSrc, TCoeff &uiAbsSum, const QpParam &cQP, const Ctx& ctx)
{
const CompArea &rect = tu.blocks[compID];
const uint32_t uiWidth = rect.width;
const uint32_t uiHeight = rect.height;
const CCoeffBuf &piCoef = pSrc;
CoeffBuf piQCoef = tu.getCoeffs(compID);
const bool useTransformSkip = tu.mtsIdx==1;
bool useRDOQ = useTransformSkip ? m_useRDOQTS : m_useRDOQ;
if( !tu.cu->ispMode || !isLuma(compID) )
{
useRDOQ &= uiWidth > 2;
useRDOQ &= uiHeight > 2;
}
if (useRDOQ && (isLuma(compID) || RDOQ_CHROMA))
{
#if T0196_SELECTIVE_RDOQ
if (!m_useSelectiveRDOQ || xNeedRDOQ(tu, compID, piCoef, cQP))
{
#endif
xRateDistOptQuant( tu, compID, pSrc, uiAbsSum, cQP, ctx );
#if T0196_SELECTIVE_RDOQ
}
else
{
piQCoef.fill(0);
uiAbsSum = 0;
}
#endif
}
else
{
Quant::quant( tu, compID, pSrc, uiAbsSum, cQP, ctx );
}
}
void QuantRDOQ::xRateDistOptQuant(TransformUnit &tu, const ComponentID &compID, const CCoeffBuf &pSrc, TCoeff &uiAbsSum, const QpParam &cQP, const Ctx &ctx)
{
const FracBitsAccess& fracBits = ctx.getFracBitsAcess();
const SPS &sps = *tu.cs->sps;
const CompArea &rect = tu.blocks[compID];
const uint32_t uiWidth = rect.width;
const uint32_t uiHeight = rect.height;
const ChannelType chType = toChannelType(compID);
const int channelBitDepth = sps.getBitDepth( chType );
const bool extendedPrecision = sps.getSpsRangeExtension().getExtendedPrecisionProcessingFlag();
const int maxLog2TrDynamicRange = sps.getMaxLog2TrDynamicRange(chType);
const bool useIntraSubPartitions = tu.cu->ispMode && isLuma(compID);
/* for 422 chroma blocks, the effective scaling applied during transformation is not a power of 2, hence it cannot be
* implemented as a bit-shift (the quantised result will be sqrt(2) * larger than required). Alternatively, adjust the
* uiLog2TrSize applied in iTransformShift, such that the result is 1/sqrt(2) the required result (i.e. smaller)
* Then a QP+3 (sqrt(2)) or QP-3 (1/sqrt(2)) method could be used to get the required result
*/
// Represents scaling through forward transform
int iTransformShift = getTransformShift(channelBitDepth, rect.size(), maxLog2TrDynamicRange);
if (tu.mtsIdx==1 && extendedPrecision)
{
iTransformShift = std::max<int>(0, iTransformShift);
}
double d64BlockUncodedCost = 0;
const uint32_t uiLog2BlockWidth = g_aucLog2[uiWidth];
#if HEVC_USE_SCALING_LISTS
const uint32_t uiLog2BlockHeight = g_aucLog2[uiHeight];
#endif
const uint32_t uiMaxNumCoeff = rect.area();
CHECK(compID >= MAX_NUM_TBLOCKS, "Invalid component ID");
#if HEVC_USE_SCALING_LISTS
int scalingListType = getScalingListType(tu.cu->predMode, compID);
CHECK(scalingListType >= SCALING_LIST_NUM, "Invalid scaling list");
#endif
const TCoeff *plSrcCoeff = pSrc.buf;
TCoeff *piDstCoeff = tu.getCoeffs(compID).buf;
double *pdCostCoeff = m_pdCostCoeff;
double *pdCostSig = m_pdCostSig;
double *pdCostCoeff0 = m_pdCostCoeff0;
#if HEVC_USE_SIGN_HIDING
int *rateIncUp = m_rateIncUp;
int *rateIncDown = m_rateIncDown;
int *sigRateDelta = m_sigRateDelta;
TCoeff *deltaU = m_deltaU;
#endif
memset(piDstCoeff, 0, sizeof(*piDstCoeff) * uiMaxNumCoeff);
memset( m_pdCostCoeff, 0, sizeof( double ) * uiMaxNumCoeff );
memset( m_pdCostSig, 0, sizeof( double ) * uiMaxNumCoeff );
#if HEVC_USE_SIGN_HIDING
memset( m_rateIncUp, 0, sizeof( int ) * uiMaxNumCoeff );
memset( m_rateIncDown, 0, sizeof( int ) * uiMaxNumCoeff );
memset( m_sigRateDelta, 0, sizeof( int ) * uiMaxNumCoeff );
memset( m_deltaU, 0, sizeof( TCoeff ) * uiMaxNumCoeff );
#endif
const int iQBits = QUANT_SHIFT + cQP.per + iTransformShift; // Right shift of non-RDOQ quantizer; level = (coeff*uiQ + offset)>>q_bits
#if HEVC_USE_SCALING_LISTS
const double *const pdErrScale = xGetErrScaleCoeff(scalingListType, (uiLog2BlockWidth-1), (uiLog2BlockHeight-1), cQP.rem);
const int *const piQCoef = getQuantCoeff(scalingListType, cQP.rem, (uiLog2BlockWidth-1), (uiLog2BlockHeight-1));
const bool enableScalingLists = getUseScalingList(uiWidth, uiHeight, tu.transformSkip[compID]);
#if HM_QTBT_AS_IN_JEM_QUANT
const int defaultQuantisationCoefficient = ( TU::needsSqrt2Scale( rect, tu.transformSkip[compID] ) ? ( g_quantScales[cQP.rem] * 181 ) >> 7 : g_quantScales[cQP.rem] );
const double defaultErrorScale = xGetErrScaleCoeffNoScalingList(scalingListType, (uiLog2BlockWidth-1), (uiLog2BlockHeight-1), cQP.rem);
#else
const double blkErrScale = ( TU::needsQP3Offset( tu, compID ) ? 2.0 : 1.0 );
const int defaultQuantisationCoefficient = g_quantScales[cQP.rem];
const double defaultErrorScale = blkErrScale * xGetErrScaleCoeffNoScalingList( scalingListType, ( uiLog2BlockWidth - 1 ), ( uiLog2BlockHeight - 1 ), cQP.rem );
#endif
#else //HEVC_USE_SCALING_LISTS
#if HM_QTBT_AS_IN_JEM_QUANT
const int quantisationCoefficient = ( TU::needsSqrt2Scale( tu, compID ) ? ( g_quantScales[cQP.rem] * 181 ) >> 7 : g_quantScales[cQP.rem] );
const double errorScale = xGetErrScaleCoeff( TU::needsSqrt2Scale( tu, compID ), uiWidth, uiHeight, cQP.rem, maxLog2TrDynamicRange, channelBitDepth );
#else
const double blkErrScale = ( TU::needsQP3Offset( tu, compID ) ? 2.0 : 1.0 );
const int quantisationCoefficient = g_quantScales[cQP.rem];
const double errorScale = blkErrScale * xGetErrScaleCoeff( uiWidth, uiHeight, cQP.rem, maxLog2TrDynamicRange, channelBitDepth );
#endif
#endif//HEVC_USE_SCALING_LISTS
#if HEVC_USE_SIGN_HIDING
const TCoeff entropyCodingMinimum = -(1 << maxLog2TrDynamicRange);
#endif
const TCoeff entropyCodingMaximum = (1 << maxLog2TrDynamicRange) - 1;
#if HEVC_USE_SIGN_HIDING
CoeffCodingContext cctx(tu, compID, tu.cs->slice->getSignDataHidingEnabledFlag());
#else
CoeffCodingContext cctx(tu, compID);
#endif
const int iCGSizeM1 = (1 << cctx.log2CGSize()) - 1;
int iCGLastScanPos = -1;
double d64BaseCost = 0;
int iLastScanPos = -1;
bool is2x2subblock = ( iCGSizeM1 == 3 );
int remGt2Bins = ( is2x2subblock ? MAX_NUM_GT2_BINS_2x2SUBBLOCK : MAX_NUM_GT2_BINS_4x4SUBBLOCK );
int remRegBins = ( is2x2subblock ? MAX_NUM_REG_BINS_2x2SUBBLOCK : MAX_NUM_REG_BINS_4x4SUBBLOCK );
uint32_t goRiceParam = 0;
double *pdCostCoeffGroupSig = m_pdCostCoeffGroupSig;
memset( pdCostCoeffGroupSig, 0, ( uiMaxNumCoeff >> cctx.log2CGSize() ) * sizeof( double ) );
const int iCGNum = std::min<int>(JVET_C0024_ZERO_OUT_TH, uiWidth) * std::min<int>(JVET_C0024_ZERO_OUT_TH, uiHeight) >> cctx.log2CGSize();
int iScanPos;
coeffGroupRDStats rdStats;
#if ENABLE_TRACING
DTRACE( g_trace_ctx, D_RDOQ, "%d: %3d, %3d, %dx%d, comp=%d\n", DTRACE_GET_COUNTER( g_trace_ctx, D_RDOQ ), rect.x, rect.y, rect.width, rect.height, compID );
#endif
for (int subSetId = iCGNum - 1; subSetId >= 0; subSetId--)
{
cctx.initSubblock( subSetId );
memset( &rdStats, 0, sizeof (coeffGroupRDStats));
for (int iScanPosinCG = iCGSizeM1; iScanPosinCG >= 0; iScanPosinCG--)
{
iScanPos = cctx.minSubPos() + iScanPosinCG;
//===== quantization =====
uint32_t uiBlkPos = cctx.blockPos(iScanPos);
// set coeff
#if HEVC_USE_SCALING_LISTS
const int quantisationCoefficient = (enableScalingLists) ? piQCoef [uiBlkPos] : defaultQuantisationCoefficient;
#if HM_QTBT_AS_IN_JEM_QUANT
const double errorScale = (enableScalingLists) ? pdErrScale[uiBlkPos] : defaultErrorScale;
#else
const double errorScale = (enableScalingLists) ? pdErrScale[uiBlkPos] * blkErrScale : defaultErrorScale;
#endif
#endif
const int64_t tmpLevel = int64_t(abs(plSrcCoeff[ uiBlkPos ])) * quantisationCoefficient;
const Intermediate_Int lLevelDouble = (Intermediate_Int)std::min<int64_t>(tmpLevel, std::numeric_limits<Intermediate_Int>::max() - (Intermediate_Int(1) << (iQBits - 1)));
uint32_t uiMaxAbsLevel = std::min<uint32_t>(uint32_t(entropyCodingMaximum), uint32_t((lLevelDouble + (Intermediate_Int(1) << (iQBits - 1))) >> iQBits));
const double dErr = double( lLevelDouble );
pdCostCoeff0[ iScanPos ] = dErr * dErr * errorScale;
d64BlockUncodedCost += pdCostCoeff0[ iScanPos ];
piDstCoeff[ uiBlkPos ] = uiMaxAbsLevel;
if ( uiMaxAbsLevel > 0 && iLastScanPos < 0 )
{
iLastScanPos = iScanPos;
iCGLastScanPos = cctx.subSetId();
}
if ( iLastScanPos >= 0 )
{
#if ENABLE_TRACING
uint32_t uiCGPosY = cctx.cgPosX();
uint32_t uiCGPosX = cctx.cgPosY();
uint32_t uiPosY = cctx.posY( iScanPos );
uint32_t uiPosX = cctx.posX( iScanPos );
DTRACE( g_trace_ctx, D_RDOQ, "%d [%d][%d][%2d:%2d][%2d:%2d]", DTRACE_GET_COUNTER( g_trace_ctx, D_RDOQ ), iScanPos, uiBlkPos, uiCGPosX, uiCGPosY, uiPosX, uiPosY );
#endif
//===== coefficient level estimation =====
unsigned ctxIdSig = 0;
if( iScanPos != iLastScanPos )
{
ctxIdSig = cctx.sigCtxIdAbs( iScanPos, piDstCoeff, 0 );
}
uint32_t uiLevel;
uint8_t ctxOffset = cctx.ctxOffsetAbs ();
uint32_t uiParCtx = cctx.parityCtxIdAbs ( ctxOffset );
uint32_t uiGt1Ctx = cctx.greater1CtxIdAbs ( ctxOffset );
uint32_t uiGt2Ctx = cctx.greater2CtxIdAbs ( ctxOffset );
uint32_t goRiceZero = 0;
if( remRegBins < 4 )
{
unsigned sumAbs = cctx.templateAbsSum( iScanPos, piDstCoeff );
goRiceParam = g_auiGoRiceParsCoeff [ sumAbs ];
goRiceZero = g_auiGoRicePosCoeff0[0][ sumAbs ];
}
const BinFracBits fracBitsPar = fracBits.getFracBitsArray( uiParCtx );
const BinFracBits fracBitsGt1 = fracBits.getFracBitsArray( uiGt1Ctx );
const BinFracBits fracBitsGt2 = fracBits.getFracBitsArray( uiGt2Ctx );
if( iScanPos == iLastScanPos )
{
uiLevel = xGetCodedLevel( pdCostCoeff[ iScanPos ], pdCostCoeff0[ iScanPos ], pdCostSig[ iScanPos ],
lLevelDouble, uiMaxAbsLevel, nullptr, fracBitsPar, fracBitsGt1, fracBitsGt2, remGt2Bins, remRegBins, goRiceZero, goRiceParam, iQBits, errorScale, 1, extendedPrecision, maxLog2TrDynamicRange );
}
else
{
DTRACE_COND( ( uiMaxAbsLevel != 0 ), g_trace_ctx, D_RDOQ_MORE, " uiCtxSig=%d", ctxIdSig );
const BinFracBits fracBitsSig = fracBits.getFracBitsArray( ctxIdSig );
uiLevel = xGetCodedLevel( pdCostCoeff[ iScanPos ], pdCostCoeff0[ iScanPos ], pdCostSig[ iScanPos ],
lLevelDouble, uiMaxAbsLevel, &fracBitsSig, fracBitsPar, fracBitsGt1, fracBitsGt2, remGt2Bins, remRegBins, goRiceZero, goRiceParam, iQBits, errorScale, 0, extendedPrecision, maxLog2TrDynamicRange );
#if HEVC_USE_SIGN_HIDING
sigRateDelta[ uiBlkPos ] = ( remRegBins < 4 ? 0 : fracBitsSig.intBits[1] - fracBitsSig.intBits[0] );
#endif
}
DTRACE( g_trace_ctx, D_RDOQ, " Lev=%d \n", uiLevel );
DTRACE_COND( ( uiMaxAbsLevel != 0 ), g_trace_ctx, D_RDOQ, " CostC0=%d\n", (int64_t)( pdCostCoeff0[iScanPos] ) );
DTRACE_COND( ( uiMaxAbsLevel != 0 ), g_trace_ctx, D_RDOQ, " CostC =%d\n", (int64_t)( pdCostCoeff[iScanPos] ) );
#if HEVC_USE_SIGN_HIDING
deltaU[ uiBlkPos ] = TCoeff((lLevelDouble - (Intermediate_Int(uiLevel) << iQBits)) >> (iQBits-8));
if( uiLevel > 0 )
{
int rateNow = xGetICRate( uiLevel, fracBitsPar, fracBitsGt1, fracBitsGt2, remGt2Bins, remRegBins, goRiceZero, goRiceParam, extendedPrecision, maxLog2TrDynamicRange );
rateIncUp [ uiBlkPos ] = xGetICRate( uiLevel+1, fracBitsPar, fracBitsGt1, fracBitsGt2, remGt2Bins, remRegBins, goRiceZero, goRiceParam, extendedPrecision, maxLog2TrDynamicRange ) - rateNow;
rateIncDown [ uiBlkPos ] = xGetICRate( uiLevel-1, fracBitsPar, fracBitsGt1, fracBitsGt2, remGt2Bins, remRegBins, goRiceZero, goRiceParam, extendedPrecision, maxLog2TrDynamicRange ) - rateNow;
}
else // uiLevel == 0
{
if( remRegBins < 4 )
{
int rateNow = xGetICRate( uiLevel, fracBitsPar, fracBitsGt1, fracBitsGt2, remGt2Bins, remRegBins, goRiceZero, goRiceParam, extendedPrecision, maxLog2TrDynamicRange );
rateIncUp [ uiBlkPos ] = xGetICRate( uiLevel+1, fracBitsPar, fracBitsGt1, fracBitsGt2, remGt2Bins, remRegBins, goRiceZero, goRiceParam, extendedPrecision, maxLog2TrDynamicRange ) - rateNow;
}
else
{
rateIncUp [ uiBlkPos ] = fracBitsGt1.intBits[ 0 ];
}
}
#endif
piDstCoeff[ uiBlkPos ] = uiLevel;
d64BaseCost += pdCostCoeff [ iScanPos ];
if( ( (iScanPos & iCGSizeM1) == 0 ) && ( iScanPos > 0 ) )
{
remGt2Bins = ( is2x2subblock ? MAX_NUM_GT2_BINS_2x2SUBBLOCK : MAX_NUM_GT2_BINS_4x4SUBBLOCK );
remRegBins = ( is2x2subblock ? MAX_NUM_REG_BINS_2x2SUBBLOCK : MAX_NUM_REG_BINS_4x4SUBBLOCK ) - remGt2Bins;
goRiceParam = 0;
}
else if( remRegBins >= 4 )
{
const uint32_t baseLevel = 4;
if( goRiceParam < 3 && ((uiLevel-baseLevel)>>1) > (3<<goRiceParam)-1 )
{
goRiceParam++;
}
remRegBins -= (uiLevel < 2 ? uiLevel : 3) + (iScanPos != iLastScanPos);
}
}
else
{
d64BaseCost += pdCostCoeff0[ iScanPos ];
}
rdStats.d64SigCost += pdCostSig[ iScanPos ];
if (iScanPosinCG == 0 )
{
rdStats.d64SigCost_0 = pdCostSig[ iScanPos ];
}
if (piDstCoeff[ uiBlkPos ] )
{
cctx.setSigGroup();
rdStats.d64CodedLevelandDist += pdCostCoeff[ iScanPos ] - pdCostSig[ iScanPos ];
rdStats.d64UncodedDist += pdCostCoeff0[ iScanPos ];
if ( iScanPosinCG != 0 )
{
rdStats.iNNZbeforePos0++;
}
}
} //end for (iScanPosinCG)
if (iCGLastScanPos >= 0)
{
if( cctx.subSetId() )
{
if( !cctx.isSigGroup() )
{
const BinFracBits fracBitsSigGroup = fracBits.getFracBitsArray( cctx.sigGroupCtxId() );
d64BaseCost += xGetRateSigCoeffGroup(fracBitsSigGroup, 0) - rdStats.d64SigCost;
pdCostCoeffGroupSig[ cctx.subSetId() ] = xGetRateSigCoeffGroup(fracBitsSigGroup, 0);
}
else
{
if (cctx.subSetId() < iCGLastScanPos) //skip the last coefficient group, which will be handled together with last position below.
{
if ( rdStats.iNNZbeforePos0 == 0 )
{
d64BaseCost -= rdStats.d64SigCost_0;
rdStats.d64SigCost -= rdStats.d64SigCost_0;
}
// rd-cost if SigCoeffGroupFlag = 0, initialization
double d64CostZeroCG = d64BaseCost;
const BinFracBits fracBitsSigGroup = fracBits.getFracBitsArray( cctx.sigGroupCtxId() );
if (cctx.subSetId() < iCGLastScanPos)
{
d64BaseCost += xGetRateSigCoeffGroup(fracBitsSigGroup,1);
d64CostZeroCG += xGetRateSigCoeffGroup(fracBitsSigGroup,0);
pdCostCoeffGroupSig[ cctx.subSetId() ] = xGetRateSigCoeffGroup(fracBitsSigGroup,1);
}
// try to convert the current coeff group from non-zero to all-zero
d64CostZeroCG += rdStats.d64UncodedDist; // distortion for resetting non-zero levels to zero levels
d64CostZeroCG -= rdStats.d64CodedLevelandDist; // distortion and level cost for keeping all non-zero levels
d64CostZeroCG -= rdStats.d64SigCost; // sig cost for all coeffs, including zero levels and non-zerl levels
// if we can save cost, change this block to all-zero block
if ( d64CostZeroCG < d64BaseCost )
{
cctx.resetSigGroup();
d64BaseCost = d64CostZeroCG;
if (cctx.subSetId() < iCGLastScanPos)
{
pdCostCoeffGroupSig[ cctx.subSetId() ] = xGetRateSigCoeffGroup(fracBitsSigGroup,0);
}
// reset coeffs to 0 in this block
for (int iScanPosinCG = iCGSizeM1; iScanPosinCG >= 0; iScanPosinCG--)
{
iScanPos = cctx.minSubPos() + iScanPosinCG;
uint32_t uiBlkPos = cctx.blockPos( iScanPos );
if (piDstCoeff[ uiBlkPos ])
{
piDstCoeff [ uiBlkPos ] = 0;
pdCostCoeff[ iScanPos ] = pdCostCoeff0[ iScanPos ];
pdCostSig [ iScanPos ] = 0;
}
}
} // end if ( d64CostAllZeros < d64BaseCost )
}
} // end if if (uiSigCoeffGroupFlag[ uiCGBlkPos ] == 0)
}
else
{
cctx.setSigGroup();
}
}
} //end for (cctx.subSetId)
//===== estimate last position =====
if ( iLastScanPos < 0 )
{
return;
}
double d64BestCost = 0;
int iBestLastIdxP1 = 0;
if( !CU::isIntra( *tu.cu ) && isLuma( compID ) && tu.depth == 0 )
{
const BinFracBits fracBitsQtRootCbf = fracBits.getFracBitsArray( Ctx::QtRootCbf() );
d64BestCost = d64BlockUncodedCost + xGetICost( fracBitsQtRootCbf.intBits[ 0 ] );
d64BaseCost += xGetICost( fracBitsQtRootCbf.intBits[ 1 ] );
}
else
{
bool previousCbf = tu.cbf[COMPONENT_Cb];
bool lastCbfIsInferred = false;
if( useIntraSubPartitions )
{
bool rootCbfSoFar = false;
bool isLastSubPartition = CU::isISPLast(*tu.cu, tu.Y(), compID);
uint32_t nTus = tu.cu->ispMode == HOR_INTRA_SUBPARTITIONS ? tu.cu->lheight() >> g_aucLog2[tu.lheight()] : tu.cu->lwidth() >> g_aucLog2[tu.lwidth()];
if( isLastSubPartition )
{
TransformUnit* tuPointer = tu.cu->firstTU;
for( int tuIdx = 0; tuIdx < nTus - 1; tuIdx++ )
{
rootCbfSoFar |= TU::getCbfAtDepth(*tuPointer, COMPONENT_Y, tu.depth);
tuPointer = tuPointer->next;
}
if( !rootCbfSoFar )
{
lastCbfIsInferred = true;
}
}
if( !lastCbfIsInferred )
{
previousCbf = TU::getPrevTuCbfAtDepth(tu, compID, tu.depth);
}
}
BinFracBits fracBitsQtCbf = fracBits.getFracBitsArray( Ctx::QtCbf[compID]( DeriveCtx::CtxQtCbf( rect.compID, tu.depth, previousCbf, useIntraSubPartitions ) ) );
if( !lastCbfIsInferred )
{
d64BestCost = d64BlockUncodedCost + xGetICost(fracBitsQtCbf.intBits[0]);
d64BaseCost += xGetICost(fracBitsQtCbf.intBits[1]);
}
else
{
d64BestCost = d64BlockUncodedCost;
}
}
int lastBitsX[LAST_SIGNIFICANT_GROUPS] = { 0 };
int lastBitsY[LAST_SIGNIFICANT_GROUPS] = { 0 };
{
#if HEVC_USE_MDCS
int dim1 = ( cctx.scanType() == SCAN_VER ? uiHeight : uiWidth );
int dim2 = ( cctx.scanType() == SCAN_VER ? uiWidth : uiHeight );
#else
int dim1 = std::min<int>(JVET_C0024_ZERO_OUT_TH, uiWidth);
int dim2 = std::min<int>(JVET_C0024_ZERO_OUT_TH, uiHeight);
#endif
int bitsX = 0;
int bitsY = 0;
int ctxId;
//X-coordinate
for ( ctxId = 0; ctxId < g_uiGroupIdx[dim1-1]; ctxId++)
{
const BinFracBits fB = fracBits.getFracBitsArray( cctx.lastXCtxId(ctxId) );
lastBitsX[ ctxId ] = bitsX + fB.intBits[ 0 ];
bitsX += fB.intBits[ 1 ];
}
lastBitsX[ctxId] = bitsX;
//Y-coordinate
for ( ctxId = 0; ctxId < g_uiGroupIdx[dim2-1]; ctxId++)
{
const BinFracBits fB = fracBits.getFracBitsArray( cctx.lastYCtxId(ctxId) );
lastBitsY[ ctxId ] = bitsY + fB.intBits[ 0 ];
bitsY += fB.intBits[ 1 ];
}
lastBitsY[ctxId] = bitsY;
}
bool bFoundLast = false;
for (int iCGScanPos = iCGLastScanPos; iCGScanPos >= 0; iCGScanPos--)
{
d64BaseCost -= pdCostCoeffGroupSig [ iCGScanPos ];
if (cctx.isSigGroup( iCGScanPos ) )
{
for (int iScanPosinCG = iCGSizeM1; iScanPosinCG >= 0; iScanPosinCG--)
{
iScanPos = iCGScanPos * (iCGSizeM1 + 1) + iScanPosinCG;
if (iScanPos > iLastScanPos)
{
continue;
}
uint32_t uiBlkPos = cctx.blockPos( iScanPos );
if( piDstCoeff[ uiBlkPos ] )
{
uint32_t uiPosY = uiBlkPos >> uiLog2BlockWidth;
uint32_t uiPosX = uiBlkPos - ( uiPosY << uiLog2BlockWidth );
#if HEVC_USE_MDCS
double d64CostLast = ( cctx.scanType() == SCAN_VER ? xGetRateLast( lastBitsX, lastBitsY, uiPosY, uiPosX ) : xGetRateLast( lastBitsX, lastBitsY, uiPosX, uiPosY ) );
#else
double d64CostLast = xGetRateLast( lastBitsX, lastBitsY, uiPosX, uiPosY );
#endif
double totalCost = d64BaseCost + d64CostLast - pdCostSig[ iScanPos ];
if( totalCost < d64BestCost )
{
iBestLastIdxP1 = iScanPos + 1;
d64BestCost = totalCost;
}
if( piDstCoeff[ uiBlkPos ] > 1 )
{
bFoundLast = true;
break;
}
d64BaseCost -= pdCostCoeff[ iScanPos ];
d64BaseCost += pdCostCoeff0[ iScanPos ];
}
else
{
d64BaseCost -= pdCostSig[ iScanPos ];
}
} //end for
if (bFoundLast)
{
break;
}
} // end if (uiSigCoeffGroupFlag[ uiCGBlkPos ])
DTRACE( g_trace_ctx, D_RDOQ_COST, "%d: %3d, %3d, %dx%d, comp=%d\n", DTRACE_GET_COUNTER( g_trace_ctx, D_RDOQ_COST ), rect.x, rect.y, rect.width, rect.height, compID );
DTRACE( g_trace_ctx, D_RDOQ_COST, "Uncoded=%d\n", (int64_t)( d64BlockUncodedCost ) );
DTRACE( g_trace_ctx, D_RDOQ_COST, "Coded =%d\n", (int64_t)( d64BaseCost ) );
} // end for
for ( int scanPos = 0; scanPos < iBestLastIdxP1; scanPos++ )
{
int blkPos = cctx.blockPos( scanPos );
TCoeff level = piDstCoeff[ blkPos ];
uiAbsSum += level;
piDstCoeff[ blkPos ] = ( plSrcCoeff[ blkPos ] < 0 ) ? -level : level;
}
//===== clean uncoded coefficients =====
for ( int scanPos = iBestLastIdxP1; scanPos <= iLastScanPos; scanPos++ )
{
piDstCoeff[ cctx.blockPos( scanPos ) ] = 0;
}
#if HEVC_USE_SIGN_HIDING
if( cctx.signHiding() && uiAbsSum>=2)
{
const double inverseQuantScale = double(g_invQuantScales[cQP.rem]);
int64_t rdFactor = (int64_t)(inverseQuantScale * inverseQuantScale * (1 << (2 * cQP.per)) / m_dLambda / 16
/ (1 << (2 * DISTORTION_PRECISION_ADJUSTMENT(channelBitDepth)))
#if HM_QTBT_AS_IN_JEM_QUANT
#else
* blkErrScale
#endif
+ 0.5);
int lastCG = -1;
int absSum = 0 ;
int n ;
for (int subSet = iCGNum - 1; subSet >= 0; subSet--)
{
int subPos = subSet << cctx.log2CGSize();
int firstNZPosInCG = iCGSizeM1 + 1, lastNZPosInCG = -1;
absSum = 0 ;
for( n = iCGSizeM1; n >= 0; --n )
{
if( piDstCoeff[ cctx.blockPos( n + subPos )] )
{
lastNZPosInCG = n;
break;
}
}
for( n = 0; n <= iCGSizeM1; n++ )
{
if( piDstCoeff[ cctx.blockPos( n + subPos )] )
{
firstNZPosInCG = n;
break;
}
}
for( n = firstNZPosInCG; n <= lastNZPosInCG; n++ )
{
absSum += int(piDstCoeff[ cctx.blockPos( n + subPos )]);
}
if(lastNZPosInCG>=0 && lastCG==-1)
{
lastCG = 1;
}
if( lastNZPosInCG-firstNZPosInCG>=SBH_THRESHOLD )
{
uint32_t signbit = (piDstCoeff[cctx.blockPos(subPos+firstNZPosInCG)]>0?0:1);
if( signbit!=(absSum&0x1) ) // hide but need tune
{
// calculate the cost
int64_t minCostInc = std::numeric_limits<int64_t>::max(), curCost = std::numeric_limits<int64_t>::max();
int minPos = -1, finalChange = 0, curChange = 0;
for( n = (lastCG == 1 ? lastNZPosInCG : iCGSizeM1); n >= 0; --n )
{
uint32_t uiBlkPos = cctx.blockPos( n + subPos );
if(piDstCoeff[ uiBlkPos ] != 0 )
{
int64_t costUp = rdFactor * ( - deltaU[uiBlkPos] ) + rateIncUp[uiBlkPos];
int64_t costDown = rdFactor * ( deltaU[uiBlkPos] ) + rateIncDown[uiBlkPos]
- ((abs(piDstCoeff[uiBlkPos]) == 1) ? sigRateDelta[uiBlkPos] : 0);
if(lastCG==1 && lastNZPosInCG==n && abs(piDstCoeff[uiBlkPos])==1)
{
costDown -= (4<<SCALE_BITS);
}
if(costUp<costDown)
{
curCost = costUp;
curChange = 1;
}
else
{
curChange = -1;
if(n==firstNZPosInCG && abs(piDstCoeff[uiBlkPos])==1)
{
curCost = std::numeric_limits<int64_t>::max();
}
else
{
curCost = costDown;
}
}
}
else
{
curCost = rdFactor * ( - (abs(deltaU[uiBlkPos])) ) + (1<<SCALE_BITS) + rateIncUp[uiBlkPos] + sigRateDelta[uiBlkPos] ;
curChange = 1 ;
if(n<firstNZPosInCG)
{
uint32_t thissignbit = (plSrcCoeff[uiBlkPos]>=0?0:1);
if(thissignbit != signbit )
{
curCost = std::numeric_limits<int64_t>::max();
}
}
}
if( curCost<minCostInc)
{
minCostInc = curCost;
finalChange = curChange;
minPos = uiBlkPos;
}
}
if(piDstCoeff[minPos] == entropyCodingMaximum || piDstCoeff[minPos] == entropyCodingMinimum)
{
finalChange = -1;
}
if(plSrcCoeff[minPos]>=0)
{
piDstCoeff[minPos] += finalChange ;
}
else
{
piDstCoeff[minPos] -= finalChange ;
}
}
}
if(lastCG==1)
{
lastCG=0 ;
}
}
}
#endif
}
//! \}