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/* The copyright in this software is being made available under the BSD
* License, included below. This software may be subject to other third party
* and contributor rights, including patent rights, and no such rights are
* granted under this license.
*
* Copyright (c) 2010-2018, ITU/ISO/IEC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "DepQuant.h"
#include "TrQuant.h"
#include "CodingStructure.h"
#include "UnitTools.h"
#include <bitset>
namespace DQIntern
{
/*================================================================================*/
/*===== =====*/
/*===== R A T E E S T I M A T O R =====*/
/*===== =====*/
/*================================================================================*/
struct NbInfoSbb
{
uint8_t num;
uint8_t inPos[5];
};
struct NbInfoOut
{
uint16_t maxDist;
uint16_t num;
uint16_t outPos[5];
};
struct CoeffFracBits
{
#if JVET_L0274
int32_t bits[6];
#else
Karsten Suehring
committed
int32_t bits[7];
#endif
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};
#if JVET_L0274_ENCODER_SPEED_UP
enum ScanPosType { SCAN_ISCSBB = 0, SCAN_SOCSBB = 1, SCAN_EOCSBB = 2 };
struct ScanInfo
{
ScanInfo() {}
int sbbSize;
int numSbb;
int scanIdx;
int rasterPos;
int sbbPos;
int insidePos;
bool eosbb;
ScanPosType spt;
unsigned sigCtxOffsetNext;
unsigned gtxCtxOffsetNext;
int nextInsidePos;
NbInfoSbb nextNbInfoSbb;
int nextSbbRight;
int nextSbbBelow;
};
class Rom;
struct TUParameters
{
TUParameters ( const Rom& rom, const unsigned width, const unsigned height, const ChannelType chType );
~TUParameters()
{
delete [] m_scanInfo;
}
ChannelType m_chType;
unsigned m_width;
unsigned m_height;
unsigned m_numCoeff;
unsigned m_numSbb;
unsigned m_log2SbbWidth;
unsigned m_log2SbbHeight;
unsigned m_log2SbbSize;
unsigned m_sbbSize;
unsigned m_sbbMask;
unsigned m_widthInSbb;
unsigned m_heightInSbb;
CoeffScanType m_scanType;
const unsigned* m_scanSbbId2SbbPos;
const unsigned* m_scanId2BlkPos;
const unsigned* m_scanId2PosX;
const unsigned* m_scanId2PosY;
const NbInfoSbb* m_scanId2NbInfoSbb;
const NbInfoOut* m_scanId2NbInfoOut;
ScanInfo* m_scanInfo;
private:
void xSetScanInfo( ScanInfo& scanInfo, int scanIdx );
};
class Rom
{
public:
Rom() : m_scansInitialized(false) {}
~Rom() { xUninitScanArrays(); }
void init () { xInitScanArrays(); }
const NbInfoSbb* getNbInfoSbb( int hd, int vd ) const { return m_scanId2NbInfoSbbArray[hd][vd]; }
const NbInfoOut* getNbInfoOut( int hd, int vd ) const { return m_scanId2NbInfoOutArray[hd][vd]; }
const TUParameters* getTUPars ( const CompArea& area, const ComponentID compID ) const
{
return m_tuParameters[g_aucLog2[area.width]][g_aucLog2[area.height]][toChannelType(compID)];
}
private:
void xInitScanArrays ();
void xUninitScanArrays ();
private:
bool m_scansInitialized;
NbInfoSbb* m_scanId2NbInfoSbbArray[ MAX_CU_DEPTH+1 ][ MAX_CU_DEPTH+1 ];
NbInfoOut* m_scanId2NbInfoOutArray[ MAX_CU_DEPTH+1 ][ MAX_CU_DEPTH+1 ];
TUParameters* m_tuParameters [ MAX_CU_DEPTH+1 ][ MAX_CU_DEPTH+1 ][ MAX_NUM_CHANNEL_TYPE ];
};
void Rom::xInitScanArrays()
{
if( m_scansInitialized )
{
return;
}
::memset( m_scanId2NbInfoSbbArray, 0, sizeof(m_scanId2NbInfoSbbArray) );
::memset( m_scanId2NbInfoOutArray, 0, sizeof(m_scanId2NbInfoOutArray) );
::memset( m_tuParameters, 0, sizeof(m_tuParameters) );
uint32_t raster2id[ MAX_CU_SIZE * MAX_CU_SIZE ];
for( int hd = 1; hd <= MAX_CU_DEPTH; hd++ )
{
for( int vd = 1; vd <= MAX_CU_DEPTH; vd++ )
{
const uint32_t blockWidth = (1 << hd);
const uint32_t blockHeight = (1 << vd);
const uint32_t totalValues = blockWidth * blockHeight;
const uint32_t log2CGWidth = (blockWidth & 3) + (blockHeight & 3) > 0 ? 1 : 2;
const uint32_t log2CGHeight = (blockWidth & 3) + (blockHeight & 3) > 0 ? 1 : 2;
const uint32_t groupWidth = 1 << log2CGWidth;
const uint32_t groupHeight = 1 << log2CGHeight;
const uint32_t groupSize = groupWidth * groupHeight;
const CoeffScanType scanType = SCAN_DIAG;
const SizeType blkWidthIdx = gp_sizeIdxInfo->idxFrom( blockWidth );
const SizeType blkHeightIdx = gp_sizeIdxInfo->idxFrom( blockHeight );
const uint32_t* scanId2RP = g_scanOrder [SCAN_GROUPED_4x4][scanType][blkWidthIdx][blkHeightIdx];
const uint32_t* scanId2X = g_scanOrderPosXY[SCAN_GROUPED_4x4][scanType][blkWidthIdx][blkHeightIdx][0];
const uint32_t* scanId2Y = g_scanOrderPosXY[SCAN_GROUPED_4x4][scanType][blkWidthIdx][blkHeightIdx][1];
NbInfoSbb*& sId2NbSbb = m_scanId2NbInfoSbbArray[hd][vd];
NbInfoOut*& sId2NbOut = m_scanId2NbInfoOutArray[hd][vd];
sId2NbSbb = new NbInfoSbb[ totalValues ];
sId2NbOut = new NbInfoOut[ totalValues ];
for( uint32_t scanId = 0; scanId < totalValues; scanId++ )
{
raster2id[ scanId2RP[ scanId ] ] = scanId;
}
for( unsigned scanId = 0; scanId < totalValues; scanId++ )
{
const int posX = scanId2X [ scanId ];
const int posY = scanId2Y [ scanId ];
const int rpos = scanId2RP[ scanId ];
{
//===== inside subband neighbours =====
NbInfoSbb& nbSbb = sId2NbSbb[ scanId ];
const int begSbb = scanId - ( scanId & (groupSize-1) ); // first pos in current subblock
int cpos[5];
cpos[0] = ( posX < blockWidth -1 ? ( raster2id[rpos+1 ] - begSbb < groupSize ? raster2id[rpos+1 ] - begSbb : 0 ) : 0 );
cpos[1] = ( posX < blockWidth -2 ? ( raster2id[rpos+2 ] - begSbb < groupSize ? raster2id[rpos+2 ] - begSbb : 0 ) : 0 );
cpos[2] = ( posX < blockWidth -1 && posY < blockHeight-1 ? ( raster2id[rpos+1+blockWidth] - begSbb < groupSize ? raster2id[rpos+1+blockWidth] - begSbb : 0 ) : 0 );
cpos[3] = ( posY < blockHeight-1 ? ( raster2id[rpos+ blockWidth] - begSbb < groupSize ? raster2id[rpos+ blockWidth] - begSbb : 0 ) : 0 );
cpos[4] = ( posY < blockHeight-2 ? ( raster2id[rpos+2*blockWidth] - begSbb < groupSize ? raster2id[rpos+2*blockWidth] - begSbb : 0 ) : 0 );
for( nbSbb.num = 0; true; )
{
int nk = -1;
for( int k = 0; k < 5; k++ )
{
if( cpos[k] != 0 && ( nk < 0 || cpos[k] < cpos[nk] ) )
{
nk = k;
}
}
if( nk < 0 )
{
break;
}
nbSbb.inPos[ nbSbb.num++ ] = uint8_t( cpos[nk] );
cpos[nk] = 0;
}
for( int k = nbSbb.num; k < 5; k++ )
{
nbSbb.inPos[k] = 0;
}
}
{
//===== outside subband neighbours =====
NbInfoOut& nbOut = sId2NbOut[ scanId ];
const int begSbb = scanId - ( scanId & (groupSize-1) ); // first pos in current subblock
int cpos[5];
cpos[0] = ( posX < blockWidth -1 ? ( raster2id[rpos+1 ] - begSbb >= groupSize ? raster2id[rpos+1 ] : 0 ) : 0 );
cpos[1] = ( posX < blockWidth -2 ? ( raster2id[rpos+2 ] - begSbb >= groupSize ? raster2id[rpos+2 ] : 0 ) : 0 );
cpos[2] = ( posX < blockWidth -1 && posY < blockHeight-1 ? ( raster2id[rpos+1+blockWidth] - begSbb >= groupSize ? raster2id[rpos+1+blockWidth] : 0 ) : 0 );
cpos[3] = ( posY < blockHeight-1 ? ( raster2id[rpos+ blockWidth] - begSbb >= groupSize ? raster2id[rpos+ blockWidth] : 0 ) : 0 );
cpos[4] = ( posY < blockHeight-2 ? ( raster2id[rpos+2*blockWidth] - begSbb >= groupSize ? raster2id[rpos+2*blockWidth] : 0 ) : 0 );
for( nbOut.num = 0; true; )
{
int nk = -1;
for( int k = 0; k < 5; k++ )
{
if( cpos[k] != 0 && ( nk < 0 || cpos[k] < cpos[nk] ) )
{
nk = k;
}
}
if( nk < 0 )
{
break;
}
nbOut.outPos[ nbOut.num++ ] = uint16_t( cpos[nk] );
cpos[nk] = 0;
}
for( int k = nbOut.num; k < 5; k++ )
{
nbOut.outPos[k] = 0;
}
nbOut.maxDist = ( scanId == 0 ? 0 : sId2NbOut[scanId-1].maxDist );
for( int k = 0; k < nbOut.num; k++ )
{
if( nbOut.outPos[k] > nbOut.maxDist )
{
nbOut.maxDist = nbOut.outPos[k];
}
}
}
}
// make it relative
for( unsigned scanId = 0; scanId < totalValues; scanId++ )
{
NbInfoOut& nbOut = sId2NbOut[scanId];
const int begSbb = scanId - ( scanId & (groupSize-1) ); // first pos in current subblock
for( int k = 0; k < nbOut.num; k++ )
{
nbOut.outPos[k] -= begSbb;
}
nbOut.maxDist -= scanId;
}
for( int chId = 0; chId < MAX_NUM_CHANNEL_TYPE; chId++ )
{
m_tuParameters[hd][vd][chId] = new TUParameters( *this, blockWidth, blockHeight, ChannelType(chId) );
}
}
}
m_scansInitialized = true;
}
void Rom::xUninitScanArrays()
{
if( !m_scansInitialized )
{
return;
}
for( int hd = 0; hd <= MAX_CU_DEPTH; hd++ )
{
for( int vd = 0; vd <= MAX_CU_DEPTH; vd++ )
{
NbInfoSbb*& sId2NbSbb = m_scanId2NbInfoSbbArray[hd][vd];
NbInfoOut*& sId2NbOut = m_scanId2NbInfoOutArray[hd][vd];
if( sId2NbSbb )
{
delete [] sId2NbSbb;
}
if( sId2NbOut )
{
delete [] sId2NbOut;
}
for( int chId = 0; chId < MAX_NUM_CHANNEL_TYPE; chId++ )
{
TUParameters*& tuPars = m_tuParameters[hd][vd][chId];
if( tuPars )
{
delete tuPars;
}
}
}
}
m_scansInitialized = false;
}
static Rom g_Rom;
TUParameters::TUParameters( const Rom& rom, const unsigned width, const unsigned height, const ChannelType chType )
{
m_chType = chType;
m_width = width;
m_height = height;
m_numCoeff = m_width * m_height;
const bool no4x4 = ( ( m_width & 3 ) != 0 || ( m_height & 3 ) != 0 );
m_log2SbbWidth = ( no4x4 ? 1 : 2 );
m_log2SbbHeight = ( no4x4 ? 1 : 2 );
m_log2SbbSize = m_log2SbbWidth + m_log2SbbHeight;
m_sbbSize = ( 1 << m_log2SbbSize );
m_sbbMask = m_sbbSize - 1;
m_widthInSbb = m_width >> m_log2SbbWidth;
m_heightInSbb = m_height >> m_log2SbbHeight;
m_numSbb = m_widthInSbb * m_heightInSbb;
#if HEVC_USE_MDCS
#error "MDCS is not supported" // use different function...
// m_scanType = CoeffScanType( TU::getCoefScanIdx( tu, m_compID ) );
#else
m_scanType = SCAN_DIAG;
#endif
SizeType hsbb = gp_sizeIdxInfo->idxFrom( m_widthInSbb );
SizeType vsbb = gp_sizeIdxInfo->idxFrom( m_heightInSbb );
SizeType hsId = gp_sizeIdxInfo->idxFrom( m_width );
SizeType vsId = gp_sizeIdxInfo->idxFrom( m_height );
m_scanSbbId2SbbPos = g_scanOrder [ SCAN_UNGROUPED ][ m_scanType ][ hsbb ][ vsbb ];
m_scanId2BlkPos = g_scanOrder [ SCAN_GROUPED_4x4 ][ m_scanType ][ hsId ][ vsId ];
m_scanId2PosX = g_scanOrderPosXY[ SCAN_GROUPED_4x4 ][ m_scanType ][ hsId ][ vsId ][ 0 ];
m_scanId2PosY = g_scanOrderPosXY[ SCAN_GROUPED_4x4 ][ m_scanType ][ hsId ][ vsId ][ 1 ];
int log2W = g_aucLog2[ m_width ];
int log2H = g_aucLog2[ m_height ];
m_scanId2NbInfoSbb = rom.getNbInfoSbb( log2W, log2H );
m_scanId2NbInfoOut = rom.getNbInfoOut( log2W, log2H );
m_scanInfo = new ScanInfo[ m_numCoeff ];
for( int scanIdx = 0; scanIdx < m_numCoeff; scanIdx++ )
{
xSetScanInfo( m_scanInfo[scanIdx], scanIdx );
}
}
void TUParameters::xSetScanInfo( ScanInfo& scanInfo, int scanIdx )
{
scanInfo.sbbSize = m_sbbSize;
scanInfo.numSbb = m_numSbb;
scanInfo.scanIdx = scanIdx;
scanInfo.rasterPos = m_scanId2BlkPos[ scanIdx ];
scanInfo.sbbPos = m_scanSbbId2SbbPos[ scanIdx >> m_log2SbbSize ];
scanInfo.insidePos = scanIdx & m_sbbMask;
scanInfo.eosbb = ( scanInfo.insidePos == 0 );
scanInfo.spt = SCAN_ISCSBB;
if( scanInfo.insidePos == m_sbbMask && scanIdx > scanInfo.sbbSize && scanIdx < m_numCoeff - 1 )
scanInfo.spt = SCAN_SOCSBB;
else if( scanInfo.eosbb && scanIdx > 0 && scanIdx < m_numCoeff - m_sbbSize )
scanInfo.spt = SCAN_EOCSBB;
if( scanIdx )
{
const int nextScanIdx = scanIdx - 1;
const int diag = m_scanId2PosX[ nextScanIdx ] + m_scanId2PosY[ nextScanIdx ];
if( m_chType == CHANNEL_TYPE_LUMA )
{
scanInfo.sigCtxOffsetNext = ( diag < 2 ? 12 : diag < 5 ? 6 : 0 );
scanInfo.gtxCtxOffsetNext = ( diag < 1 ? 16 : diag < 3 ? 11 : diag < 10 ? 6 : 1 );
}
else
{
scanInfo.sigCtxOffsetNext = ( diag < 2 ? 6 : 0 );
scanInfo.gtxCtxOffsetNext = ( diag < 1 ? 6 : 1 );
}
scanInfo.nextInsidePos = nextScanIdx & m_sbbMask;
scanInfo.nextNbInfoSbb = m_scanId2NbInfoSbb[ nextScanIdx ];
if( scanInfo.eosbb )
{
const int nextSbbPos = m_scanSbbId2SbbPos[ nextScanIdx >> m_log2SbbSize ];
const int nextSbbPosY = nextSbbPos / m_widthInSbb;
const int nextSbbPosX = nextSbbPos - nextSbbPosY * m_widthInSbb;
scanInfo.nextSbbRight = ( nextSbbPosX < m_widthInSbb - 1 ? nextSbbPos + 1 : 0 );
scanInfo.nextSbbBelow = ( nextSbbPosY < m_heightInSbb - 1 ? nextSbbPos + m_widthInSbb : 0 );
}
}
}
class RateEstimator
{
public:
RateEstimator () {}
~RateEstimator() {}
void initCtx ( const TUParameters& tuPars, const TransformUnit& tu, const ComponentID compID, const FracBitsAccess& fracBitsAccess );
inline const BinFracBits *sigSbbFracBits() const { return m_sigSbbFracBits; }
inline const BinFracBits *sigFlagBits(unsigned stateId) const
{
return m_sigFracBits[std::max(((int) stateId) - 1, 0)];
}
inline const CoeffFracBits *gtxFracBits(unsigned stateId) const { return m_gtxFracBits; }
inline int32_t lastOffset(unsigned scanIdx) const
{
return m_lastBitsX[m_scanId2PosX[scanIdx]] + m_lastBitsY[m_scanId2PosY[scanIdx]];
}
private:
void xSetLastCoeffOffset ( const FracBitsAccess& fracBitsAccess, const TUParameters& tuPars, const TransformUnit& tu, const ComponentID compID );
void xSetSigSbbFracBits ( const FracBitsAccess& fracBitsAccess, ChannelType chType );
void xSetSigFlagBits ( const FracBitsAccess& fracBitsAccess, ChannelType chType );
void xSetGtxFlagBits ( const FracBitsAccess& fracBitsAccess, ChannelType chType );
private:
static const unsigned sm_numCtxSetsSig = 3;
static const unsigned sm_numCtxSetsGtx = 2;
static const unsigned sm_maxNumSigSbbCtx = 2;
static const unsigned sm_maxNumSigCtx = 18;
static const unsigned sm_maxNumGtxCtx = 21;
private:
const unsigned* m_scanId2PosX;
const unsigned* m_scanId2PosY;
int32_t m_lastBitsX [ MAX_TU_SIZE ];
int32_t m_lastBitsY [ MAX_TU_SIZE ];
BinFracBits m_sigSbbFracBits [ sm_maxNumSigSbbCtx ];
BinFracBits m_sigFracBits [ sm_numCtxSetsSig ][ sm_maxNumSigCtx ];
CoeffFracBits m_gtxFracBits [ sm_maxNumGtxCtx ];
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};
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void RateEstimator::initCtx( const TUParameters& tuPars, const TransformUnit& tu, const ComponentID compID, const FracBitsAccess& fracBitsAccess )
{
m_scanId2PosX = tuPars.m_scanId2PosX;
m_scanId2PosY = tuPars.m_scanId2PosY;
xSetSigSbbFracBits ( fracBitsAccess, tuPars.m_chType );
xSetSigFlagBits ( fracBitsAccess, tuPars.m_chType );
xSetGtxFlagBits ( fracBitsAccess, tuPars.m_chType );
xSetLastCoeffOffset ( fracBitsAccess, tuPars, tu, compID );
}
void RateEstimator::xSetLastCoeffOffset( const FracBitsAccess& fracBitsAccess, const TUParameters& tuPars, const TransformUnit& tu, const ComponentID compID )
{
const ChannelType chType = ( compID == COMPONENT_Y ? CHANNEL_TYPE_LUMA : CHANNEL_TYPE_CHROMA );
int32_t cbfDeltaBits = 0;
if( compID == COMPONENT_Y && !CU::isIntra(*tu.cu) && !tu.depth )
{
const BinFracBits bits = fracBitsAccess.getFracBitsArray( Ctx::QtRootCbf() );
cbfDeltaBits = int32_t( bits.intBits[1] ) - int32_t( bits.intBits[0] );
}
else
{
BinFracBits bits = fracBitsAccess.getFracBitsArray( Ctx::QtCbf[compID]( DeriveCtx::CtxQtCbf( compID, tu.depth, tu.cbf[COMPONENT_Cb] ) ) );
cbfDeltaBits = int32_t( bits.intBits[1] ) - int32_t( bits.intBits[0] );
}
static const unsigned prefixCtx[] = { 0, 0, 0, 3, 6, 10, 15, 21 };
uint32_t ctxBits [ LAST_SIGNIFICANT_GROUPS ];
for( unsigned xy = 0; xy < 2; xy++ )
{
int32_t bitOffset = ( xy ? cbfDeltaBits : 0 );
int32_t* lastBits = ( xy ? m_lastBitsY : m_lastBitsX );
const unsigned size = ( xy ? tuPars.m_height : tuPars.m_width );
const unsigned log2Size = g_aucNextLog2[ size ];
#if HEVC_USE_MDCS
const bool useYCtx = ( m_scanType == SCAN_VER ? ( xy == 0 ) : ( xy != 0 ) );
#else
const bool useYCtx = ( xy != 0 );
#endif
const CtxSet& ctxSetLast = ( useYCtx ? Ctx::LastY : Ctx::LastX )[ chType ];
const unsigned lastShift = ( compID == COMPONENT_Y ? (log2Size+1)>>2 : Clip3<unsigned>(0,2,size>>3) );
const unsigned lastOffset = ( compID == COMPONENT_Y ? ( prefixCtx[log2Size] ) : 0 );
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uint32_t sumFBits = 0;
unsigned maxCtxId = g_uiGroupIdx[ size - 1 ];
for( unsigned ctxId = 0; ctxId < maxCtxId; ctxId++ )
{
const BinFracBits bits = fracBitsAccess.getFracBitsArray( ctxSetLast( lastOffset + ( ctxId >> lastShift ) ) );
ctxBits[ ctxId ] = sumFBits + bits.intBits[0] + ( ctxId>3 ? ((ctxId-2)>>1)<<SCALE_BITS : 0 ) + bitOffset;
sumFBits += bits.intBits[1];
}
ctxBits [ maxCtxId ] = sumFBits + ( maxCtxId>3 ? ((maxCtxId-2)>>1)<<SCALE_BITS : 0 ) + bitOffset;
for( unsigned pos = 0; pos < size; pos++ )
{
lastBits[ pos ] = ctxBits[ g_uiGroupIdx[ pos ] ];
}
}
}
void RateEstimator::xSetSigSbbFracBits( const FracBitsAccess& fracBitsAccess, ChannelType chType )
{
const CtxSet& ctxSet = Ctx::SigCoeffGroup[ chType ];
for( unsigned ctxId = 0; ctxId < sm_maxNumSigSbbCtx; ctxId++ )
{
m_sigSbbFracBits[ ctxId ] = fracBitsAccess.getFracBitsArray( ctxSet( ctxId ) );
}
}
void RateEstimator::xSetSigFlagBits( const FracBitsAccess& fracBitsAccess, ChannelType chType )
{
for( unsigned ctxSetId = 0; ctxSetId < sm_numCtxSetsSig; ctxSetId++ )
{
BinFracBits* bits = m_sigFracBits [ ctxSetId ];
const CtxSet& ctxSet = Ctx::SigFlag [ chType + 2*ctxSetId ];
const unsigned numCtx = ( chType == CHANNEL_TYPE_LUMA ? 18 : 12 );
for( unsigned ctxId = 0; ctxId < numCtx; ctxId++ )
{
bits[ ctxId ] = fracBitsAccess.getFracBitsArray( ctxSet( ctxId ) );
}
}
}
void RateEstimator::xSetGtxFlagBits( const FracBitsAccess& fracBitsAccess, ChannelType chType )
{
const CtxSet& ctxSetPar = Ctx::ParFlag [ chType ];
const CtxSet& ctxSetGt1 = Ctx::GtxFlag [ 2 + chType ];
const CtxSet& ctxSetGt2 = Ctx::GtxFlag [ chType ];
const unsigned numCtx = ( chType == CHANNEL_TYPE_LUMA ? 21 : 11 );
for( unsigned ctxId = 0; ctxId < numCtx; ctxId++ )
{
BinFracBits fbPar = fracBitsAccess.getFracBitsArray( ctxSetPar( ctxId ) );
BinFracBits fbGt1 = fracBitsAccess.getFracBitsArray( ctxSetGt1( ctxId ) );
BinFracBits fbGt2 = fracBitsAccess.getFracBitsArray( ctxSetGt2( ctxId ) );
CoeffFracBits& cb = m_gtxFracBits[ ctxId ];
int32_t par0 = (1<<SCALE_BITS) + int32_t(fbPar.intBits[0]);
int32_t par1 = (1<<SCALE_BITS) + int32_t(fbPar.intBits[1]);
cb.bits[0] = 0;
cb.bits[1] = fbGt1.intBits[0] + (1 << SCALE_BITS);
cb.bits[2] = fbGt1.intBits[1] + par0 + fbGt2.intBits[0];
cb.bits[3] = fbGt1.intBits[1] + par1 + fbGt2.intBits[0];
cb.bits[4] = fbGt1.intBits[1] + par0 + fbGt2.intBits[1];
cb.bits[5] = fbGt1.intBits[1] + par1 + fbGt2.intBits[1];
}
}
#else
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class Rom
{
public:
Rom() : m_scansInitialized(false) {}
~Rom() { xUninitScanArrays(); }
void init () { xInitScanArrays(); }
const NbInfoSbb* getNbInfoSbb( int sId, int hId, int vId ) const { return m_scanId2NbInfoSbbArray[sId][hId][vId]; }
const NbInfoOut* getNbInfoOut( int sId, int hId, int vId ) const { return m_scanId2NbInfoOutArray[sId][hId][vId]; }
private:
void xInitScanArrays ();
void xUninitScanArrays ();
private:
bool m_scansInitialized;
NbInfoSbb* m_scanId2NbInfoSbbArray[ SCAN_NUMBER_OF_TYPES ][ MAX_CU_SIZE/2+1 ][ MAX_CU_SIZE/2+1 ];
NbInfoOut* m_scanId2NbInfoOutArray[ SCAN_NUMBER_OF_TYPES ][ MAX_CU_SIZE/2+1 ][ MAX_CU_SIZE/2+1 ];
};
void Rom::xInitScanArrays()
{
if( m_scansInitialized )
{
return;
}
::memset( m_scanId2NbInfoSbbArray, 0, sizeof(m_scanId2NbInfoSbbArray) );
::memset( m_scanId2NbInfoOutArray, 0, sizeof(m_scanId2NbInfoOutArray) );
SizeIndexInfoLog2 sizeInfo;
sizeInfo.init ( MAX_CU_SIZE );
uint32_t raster2id[ MAX_CU_SIZE * MAX_CU_SIZE ];
for( uint32_t blockHeightIdx = 0; blockHeightIdx < sizeInfo.numHeights(); blockHeightIdx++ )
{
for( uint32_t blockWidthIdx = 0; blockWidthIdx < sizeInfo.numWidths(); blockWidthIdx++ )
{
const uint32_t blockWidth = sizeInfo.sizeFrom( blockWidthIdx );
const uint32_t blockHeight = sizeInfo.sizeFrom( blockHeightIdx );
const uint32_t totalValues = blockWidth * blockHeight;
const uint32_t log2CGWidth = (blockWidth & 3) + (blockHeight & 3) > 0 ? 1 : 2;
const uint32_t log2CGHeight = (blockWidth & 3) + (blockHeight & 3) > 0 ? 1 : 2;
const uint32_t groupWidth = 1 << log2CGWidth;
const uint32_t groupHeight = 1 << log2CGHeight;
const uint32_t groupSize = groupWidth * groupHeight;
if( ((blockWidth>>log2CGWidth)<<log2CGWidth)!=blockWidth || ((blockHeight>>log2CGHeight)<<log2CGHeight)!=blockHeight )
{
continue;
}
for( uint32_t scanTypeIdx = 0; scanTypeIdx < SCAN_NUMBER_OF_TYPES; scanTypeIdx++ )
{
const CoeffScanType scanType = CoeffScanType(scanTypeIdx);
const uint32_t* scanId2RP = g_scanOrder [SCAN_GROUPED_4x4][scanType][blockWidthIdx][blockHeightIdx];
const uint32_t* scanId2X = g_scanOrderPosXY[SCAN_GROUPED_4x4][scanType][blockWidthIdx][blockHeightIdx][0];
const uint32_t* scanId2Y = g_scanOrderPosXY[SCAN_GROUPED_4x4][scanType][blockWidthIdx][blockHeightIdx][1];
NbInfoSbb*& sId2NbSbb = m_scanId2NbInfoSbbArray [scanType][blockWidthIdx][blockHeightIdx];
NbInfoOut*& sId2NbOut = m_scanId2NbInfoOutArray [scanType][blockWidthIdx][blockHeightIdx];
sId2NbSbb = new NbInfoSbb[ totalValues ];
sId2NbOut = new NbInfoOut[ totalValues ];
for( uint32_t scanId = 0; scanId < totalValues; scanId++ )
{
raster2id[ scanId2RP[ scanId ] ] = scanId;
}
for( unsigned scanId = 0; scanId < totalValues; scanId++ )
{
const int posX = scanId2X [ scanId ];
const int posY = scanId2Y [ scanId ];
const int rpos = scanId2RP[ scanId ];
{
//===== inside subband neighbours =====
NbInfoSbb& nbSbb = sId2NbSbb[ scanId ];
const int begSbb = scanId - ( scanId & (groupSize-1) ); // first pos in current subblock
int cpos[5];
cpos[0] = ( posX < blockWidth -1 ? ( raster2id[rpos+1 ] - begSbb < groupSize ? raster2id[rpos+1 ] - begSbb : 0 ) : 0 );
cpos[1] = ( posX < blockWidth -2 ? ( raster2id[rpos+2 ] - begSbb < groupSize ? raster2id[rpos+2 ] - begSbb : 0 ) : 0 );
cpos[2] = ( posX < blockWidth -1 && posY < blockHeight-1 ? ( raster2id[rpos+1+blockWidth] - begSbb < groupSize ? raster2id[rpos+1+blockWidth] - begSbb : 0 ) : 0 );
cpos[3] = ( posY < blockHeight-1 ? ( raster2id[rpos+ blockWidth] - begSbb < groupSize ? raster2id[rpos+ blockWidth] - begSbb : 0 ) : 0 );
cpos[4] = ( posY < blockHeight-2 ? ( raster2id[rpos+2*blockWidth] - begSbb < groupSize ? raster2id[rpos+2*blockWidth] - begSbb : 0 ) : 0 );
for( nbSbb.num = 0; true; )
{
int nk = -1;
for( int k = 0; k < 5; k++ )
{
if( cpos[k] != 0 && ( nk < 0 || cpos[k] < cpos[nk] ) )
{
nk = k;
}
}
if( nk < 0 )
{
break;
}
nbSbb.inPos[ nbSbb.num++ ] = uint8_t( cpos[nk] );
cpos[nk] = 0;
}
for( int k = nbSbb.num; k < 5; k++ )
{
nbSbb.inPos[k] = 0;
}
}
{
//===== outside subband neighbours =====
NbInfoOut& nbOut = sId2NbOut[ scanId ];
const int begSbb = scanId - ( scanId & (groupSize-1) ); // first pos in current subblock
int cpos[5];
cpos[0] = ( posX < blockWidth -1 ? ( raster2id[rpos+1 ] - begSbb >= groupSize ? raster2id[rpos+1 ] : 0 ) : 0 );
cpos[1] = ( posX < blockWidth -2 ? ( raster2id[rpos+2 ] - begSbb >= groupSize ? raster2id[rpos+2 ] : 0 ) : 0 );
cpos[2] = ( posX < blockWidth -1 && posY < blockHeight-1 ? ( raster2id[rpos+1+blockWidth] - begSbb >= groupSize ? raster2id[rpos+1+blockWidth] : 0 ) : 0 );
cpos[3] = ( posY < blockHeight-1 ? ( raster2id[rpos+ blockWidth] - begSbb >= groupSize ? raster2id[rpos+ blockWidth] : 0 ) : 0 );
cpos[4] = ( posY < blockHeight-2 ? ( raster2id[rpos+2*blockWidth] - begSbb >= groupSize ? raster2id[rpos+2*blockWidth] : 0 ) : 0 );
for( nbOut.num = 0; true; )
{
int nk = -1;
for( int k = 0; k < 5; k++ )
{
if( cpos[k] != 0 && ( nk < 0 || cpos[k] < cpos[nk] ) )
{
nk = k;
}
}
if( nk < 0 )
{
break;
}
nbOut.outPos[ nbOut.num++ ] = uint16_t( cpos[nk] );
cpos[nk] = 0;
}
for( int k = nbOut.num; k < 5; k++ )
{
nbOut.outPos[k] = 0;
}
nbOut.maxDist = ( scanId == 0 ? 0 : sId2NbOut[scanId-1].maxDist );
for( int k = 0; k < nbOut.num; k++ )
{
if( nbOut.outPos[k] > nbOut.maxDist )
{
nbOut.maxDist = nbOut.outPos[k];
}
}
}
}
// make it relative
for( unsigned scanId = 0; scanId < totalValues; scanId++ )
{
NbInfoOut& nbOut = sId2NbOut[scanId];
const int begSbb = scanId - ( scanId & (groupSize-1) ); // first pos in current subblock
for( int k = 0; k < nbOut.num; k++ )
{
nbOut.outPos[k] -= begSbb;
}
nbOut.maxDist -= scanId;
}
}
}
}
m_scansInitialized = true;
}
void Rom::xUninitScanArrays()
{
if( !m_scansInitialized )
{
return;
}
for( uint32_t blockHeightIdx = 0; blockHeightIdx <= MAX_CU_SIZE/2; blockHeightIdx++ )
{
for( uint32_t blockWidthIdx = 0; blockWidthIdx <= MAX_CU_SIZE/2; blockWidthIdx++ )
{
for( uint32_t scanTypeIdx = 0; scanTypeIdx < SCAN_NUMBER_OF_TYPES; scanTypeIdx++ )
{
NbInfoSbb*& sId2NbSbb = m_scanId2NbInfoSbbArray[scanTypeIdx][blockWidthIdx][blockHeightIdx];
NbInfoOut*& sId2NbOut = m_scanId2NbInfoOutArray[scanTypeIdx][blockWidthIdx][blockHeightIdx];
if( sId2NbSbb )
{
delete [] sId2NbSbb;
}
if( sId2NbOut )
{
delete [] sId2NbOut;
}
}
}
}
m_scansInitialized = false;
}
static Rom g_Rom;
class RateEstimator
{
public:
RateEstimator () {}
~RateEstimator() {}
void initBlock( const TransformUnit& tu, const ComponentID compID );
void initCtx ( const TransformUnit& tu, const FracBitsAccess& fracBitsAccess );
inline bool luma() const { return m_compID == COMPONENT_Y; }
inline int32_t widthInSbb() const { return m_widthInSbb; }
inline int32_t heightInSbb() const { return m_heightInSbb; }
inline int32_t numCoeff() const { return m_numCoeff; }
inline int32_t numSbb() const { return m_numSbb; }
inline int32_t sbbSize() const { return m_sbbSize; }
inline int32_t sbbPos(unsigned scanIdx) const { return m_scanSbbId2SbbPos[scanIdx >> m_log2SbbSize]; }
inline int32_t rasterPos(unsigned scanIdx) const { return m_scanId2BlkPos[scanIdx]; }
inline int32_t posX(unsigned scanIdx) const { return m_scanId2PosX[scanIdx]; }
inline int32_t posY(unsigned scanIdx) const { return m_scanId2PosY[scanIdx]; }
inline const NbInfoSbb & nbInfoSbb(unsigned scanIdx) const { return m_scanId2NbInfoSbb[scanIdx]; }
inline const NbInfoOut * nbInfoOut() const { return m_scanId2NbInfoOut; }
inline const BinFracBits *sigSbbFracBits() const { return m_sigSbbFracBits; }
inline const BinFracBits *sigFlagBits(unsigned stateId) const
{
return m_sigFracBits[std::max(((int) stateId) - 1, 0)];
}
inline const CoeffFracBits *gtxFracBits(unsigned stateId) const { return m_gtxFracBits; }
inline int32_t lastOffset(unsigned scanIdx) const
{
return m_lastBitsX[m_scanId2PosX[scanIdx]] + m_lastBitsY[m_scanId2PosY[scanIdx]];
}
private:
void xSetLastCoeffOffset ( const FracBitsAccess& fracBitsAccess, const TransformUnit& tu );
void xSetSigSbbFracBits ( const FracBitsAccess& fracBitsAccess );
void xSetSigFlagBits ( const FracBitsAccess& fracBitsAccess );
void xSetGtxFlagBits ( const FracBitsAccess& fracBitsAccess );
private:
static const unsigned sm_numCtxSetsSig = 3;
static const unsigned sm_numCtxSetsGtx = 2;
static const unsigned sm_maxNumSigSbbCtx = 2;
static const unsigned sm_maxNumSigCtx = 18;
static const unsigned sm_maxNumGtxCtx = 21;
private:
ComponentID m_compID;
ChannelType m_chType;
unsigned m_width;
unsigned m_height;
unsigned m_numCoeff;
unsigned m_numSbb;
unsigned m_log2SbbWidth;
unsigned m_log2SbbHeight;
unsigned m_log2SbbSize;
unsigned m_sbbSize;
unsigned m_sbbMask;
unsigned m_widthInSbb;
unsigned m_heightInSbb;
CoeffScanType m_scanType;
const unsigned* m_scanSbbId2SbbPos;
const unsigned* m_scanId2BlkPos;
const unsigned* m_scanId2PosX;
const unsigned* m_scanId2PosY;
const NbInfoSbb* m_scanId2NbInfoSbb;
const NbInfoOut* m_scanId2NbInfoOut;
int32_t m_lastBitsX [ MAX_TU_SIZE ];
int32_t m_lastBitsY [ MAX_TU_SIZE ];
BinFracBits m_sigSbbFracBits [ sm_maxNumSigSbbCtx ];
BinFracBits m_sigFracBits [ sm_numCtxSetsSig ][ sm_maxNumSigCtx ];
CoeffFracBits m_gtxFracBits [ sm_maxNumGtxCtx ];
};
void RateEstimator::initBlock( const TransformUnit& tu, const ComponentID compID )
{
CHECKD( tu.cs->sps->getSpsRangeExtension().getExtendedPrecisionProcessingFlag(), "ext precision is not supported" );
const CompArea& area = tu.blocks[ compID ];
m_compID = compID;
m_chType = toChannelType( m_compID );
m_width = area.width;
m_height = area.height;
m_numCoeff = m_width * m_height;
const bool no4x4 = ( ( m_width & 3 ) != 0 || ( m_height & 3 ) != 0 );
m_log2SbbWidth = ( no4x4 ? 1 : 2 );
m_log2SbbHeight = ( no4x4 ? 1 : 2 );
m_log2SbbSize = m_log2SbbWidth + m_log2SbbHeight;
m_sbbSize = ( 1 << m_log2SbbSize );
m_sbbMask = m_sbbSize - 1;
m_widthInSbb = m_width >> m_log2SbbWidth;
m_heightInSbb = m_height >> m_log2SbbHeight;
m_numSbb = m_widthInSbb * m_heightInSbb;
#if HEVC_USE_MDCS
m_scanType = CoeffScanType( TU::getCoefScanIdx( tu, m_compID ) );
#else
m_scanType = SCAN_DIAG;
#endif
SizeType hsbb = gp_sizeIdxInfo->idxFrom( m_widthInSbb );
SizeType vsbb = gp_sizeIdxInfo->idxFrom( m_heightInSbb );
SizeType hsId = gp_sizeIdxInfo->idxFrom( m_width );
SizeType vsId = gp_sizeIdxInfo->idxFrom( m_height );
m_scanSbbId2SbbPos = g_scanOrder [ SCAN_UNGROUPED ][ m_scanType ][ hsbb ][ vsbb ];
m_scanId2BlkPos = g_scanOrder [ SCAN_GROUPED_4x4 ][ m_scanType ][ hsId ][ vsId ];
m_scanId2PosX = g_scanOrderPosXY[ SCAN_GROUPED_4x4 ][ m_scanType ][ hsId ][ vsId ][ 0 ];
m_scanId2PosY = g_scanOrderPosXY[ SCAN_GROUPED_4x4 ][ m_scanType ][ hsId ][ vsId ][ 1 ];
m_scanId2NbInfoSbb = g_Rom.getNbInfoSbb( m_scanType, hsId, vsId );
m_scanId2NbInfoOut = g_Rom.getNbInfoOut( m_scanType, hsId, vsId );
}
void RateEstimator::initCtx( const TransformUnit& tu, const FracBitsAccess& fracBitsAccess )
{
xSetSigSbbFracBits ( fracBitsAccess );
xSetSigFlagBits ( fracBitsAccess );
xSetGtxFlagBits ( fracBitsAccess );
xSetLastCoeffOffset ( fracBitsAccess, tu );
}
void RateEstimator::xSetLastCoeffOffset( const FracBitsAccess& fracBitsAccess, const TransformUnit& tu )
{
int32_t cbfDeltaBits = 0;
if( m_compID == COMPONENT_Y && !CU::isIntra(*tu.cu) && !tu.depth )
{
const BinFracBits bits = fracBitsAccess.getFracBitsArray( Ctx::QtRootCbf() );
cbfDeltaBits = int32_t( bits.intBits[1] ) - int32_t( bits.intBits[0] );
}
else
{
BinFracBits bits = fracBitsAccess.getFracBitsArray( Ctx::QtCbf[m_compID]( DeriveCtx::CtxQtCbf( m_compID, tu.depth, tu.cbf[COMPONENT_Cb] ) ) );
cbfDeltaBits = int32_t( bits.intBits[1] ) - int32_t( bits.intBits[0] );
}
static const unsigned prefixCtx[] = { 0, 0, 0, 3, 6, 10, 15, 21 };
uint32_t ctxBits [ LAST_SIGNIFICANT_GROUPS ];
for( unsigned xy = 0; xy < 2; xy++ )
{
int32_t bitOffset = ( xy ? cbfDeltaBits : 0 );
int32_t* lastBits = ( xy ? m_lastBitsY : m_lastBitsX );
const unsigned size = ( xy ? m_height : m_width );
const unsigned log2Size = g_aucNextLog2[ size ];
#if HEVC_USE_MDCS
const bool useYCtx = ( m_scanType == SCAN_VER ? ( xy == 0 ) : ( xy != 0 ) );
#else
const bool useYCtx = ( xy != 0 );
#endif
const CtxSet& ctxSetLast = ( useYCtx ? Ctx::LastY : Ctx::LastX )[ m_chType ];
const unsigned lastShift = ( m_compID == COMPONENT_Y ? (log2Size+1)>>2 : Clip3<unsigned>(0,2,size>>3) );
const unsigned lastOffset = ( m_compID == COMPONENT_Y ? prefixCtx[log2Size] : 0 );
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uint32_t sumFBits = 0;
unsigned maxCtxId = g_uiGroupIdx[ size - 1 ];
for( unsigned ctxId = 0; ctxId < maxCtxId; ctxId++ )
{
const BinFracBits bits = fracBitsAccess.getFracBitsArray( ctxSetLast( lastOffset + ( ctxId >> lastShift ) ) );
ctxBits[ ctxId ] = sumFBits + bits.intBits[0] + ( ctxId>3 ? ((ctxId-2)>>1)<<SCALE_BITS : 0 ) + bitOffset;
sumFBits += bits.intBits[1];
}
ctxBits [ maxCtxId ] = sumFBits + ( maxCtxId>3 ? ((maxCtxId-2)>>1)<<SCALE_BITS : 0 ) + bitOffset;
for( unsigned pos = 0; pos < size; pos++ )
{
lastBits[ pos ] = ctxBits[ g_uiGroupIdx[ pos ] ];
}
}
}
void RateEstimator::xSetSigSbbFracBits( const FracBitsAccess& fracBitsAccess )
{
const CtxSet& ctxSet = Ctx::SigCoeffGroup[ m_chType ];
for( unsigned ctxId = 0; ctxId < sm_maxNumSigSbbCtx; ctxId++ )
{
m_sigSbbFracBits[ ctxId ] = fracBitsAccess.getFracBitsArray( ctxSet( ctxId ) );
}
}
void RateEstimator::xSetSigFlagBits( const FracBitsAccess& fracBitsAccess )
{
for( unsigned ctxSetId = 0; ctxSetId < sm_numCtxSetsSig; ctxSetId++ )
{
BinFracBits* bits = m_sigFracBits [ ctxSetId ];
const CtxSet& ctxSet = Ctx::SigFlag [ m_chType + 2*ctxSetId ];
const unsigned numCtx = ( m_compID == COMPONENT_Y ? 18 : 12 );
for( unsigned ctxId = 0; ctxId < numCtx; ctxId++ )
{
bits[ ctxId ] = fracBitsAccess.getFracBitsArray( ctxSet( ctxId ) );
}
}
}
void RateEstimator::xSetGtxFlagBits( const FracBitsAccess& fracBitsAccess )
{
const CtxSet& ctxSetPar = Ctx::ParFlag [ m_chType ];
const CtxSet& ctxSetGt1 = Ctx::GtxFlag [ 2 + m_chType ];
const CtxSet& ctxSetGt2 = Ctx::GtxFlag [ m_chType ];
const unsigned numCtx = ( m_compID == COMPONENT_Y ? 21 : 11 );
for( unsigned ctxId = 0; ctxId < numCtx; ctxId++ )
{
BinFracBits fbPar = fracBitsAccess.getFracBitsArray( ctxSetPar( ctxId ) );
BinFracBits fbGt1 = fracBitsAccess.getFracBitsArray( ctxSetGt1( ctxId ) );
BinFracBits fbGt2 = fracBitsAccess.getFracBitsArray( ctxSetGt2( ctxId ) );
CoeffFracBits& cb = m_gtxFracBits[ ctxId ];
int32_t par0 = (1<<SCALE_BITS) + int32_t(fbPar.intBits[0]);
int32_t par1 = (1<<SCALE_BITS) + int32_t(fbPar.intBits[1]);
cb.bits[0] = 0;
#if JVET_L0274
cb.bits[1] = fbGt1.intBits[0] + (1 << SCALE_BITS);
cb.bits[2] = fbGt1.intBits[1] + par0 + fbGt2.intBits[0];
cb.bits[3] = fbGt1.intBits[1] + par1 + fbGt2.intBits[0];
cb.bits[4] = fbGt1.intBits[1] + par0 + fbGt2.intBits[1];
cb.bits[5] = fbGt1.intBits[1] + par1 + fbGt2.intBits[1];
#else
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cb.bits[1] = par0 + fbGt1.intBits[0];
cb.bits[2] = par1 + fbGt1.intBits[0];
cb.bits[3] = par0 + fbGt1.intBits[1] + fbGt2.intBits[0];
cb.bits[4] = par1 + fbGt1.intBits[1] + fbGt2.intBits[0];
cb.bits[5] = par0 + fbGt1.intBits[1] + fbGt2.intBits[1];
cb.bits[6] = par1 + fbGt1.intBits[1] + fbGt2.intBits[1];
#endif
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}
}
#endif
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/*================================================================================*/
/*===== =====*/
/*===== D A T A S T R U C T U R E S =====*/
/*===== =====*/
/*================================================================================*/
#if JVET_L0274_ENCODER_SPEED_UP
#else
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enum ScanPosType { SCAN_ISCSBB = 0, SCAN_SOCSBB = 1, SCAN_EOCSBB = 2 };
struct ScanInfo
{
const int sbbSize;
const int numSbb;
int scanIdx;
int rasterPos;
int lastOffset;
unsigned sigCtxOffsetNext;
unsigned gtxCtxOffsetNext;
int insidePos;
int nextInsidePos;
NbInfoSbb nextNbInfoSbb;
#if JVET_L0274
bool eosbb;
ScanPosType spt;
#else
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bool sosbb;
bool eosbb;
bool socsbb;