Newer
Older

Karsten Suehring
committed
/* 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) 2010-2019, ITU/ISO/IEC

Karsten Suehring
committed
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
* 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
{
int32_t bits[6];
};
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 ScanElement *m_scanSbbId2SbbPos;
const ScanElement *m_scanId2BlkPos;
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(); }
#if JVET_N0103_CGSIZE_HARMONIZATION
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]; }
#else
const NbInfoSbb* getNbInfoSbb( int hd, int vd, int ch ) const { return m_scanId2NbInfoSbbArray[hd][vd][ch]; }
const NbInfoOut* getNbInfoOut( int hd, int vd, int ch ) const { return m_scanId2NbInfoOutArray[hd][vd][ch]; }
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;
#if JVET_N0103_CGSIZE_HARMONIZATION
NbInfoSbb* m_scanId2NbInfoSbbArray[ MAX_CU_DEPTH+1 ][ MAX_CU_DEPTH+1 ];
NbInfoOut* m_scanId2NbInfoOutArray[ MAX_CU_DEPTH+1 ][ MAX_CU_DEPTH+1 ];
#else
NbInfoSbb* m_scanId2NbInfoSbbArray[ MAX_CU_DEPTH+1 ][ MAX_CU_DEPTH+1 ][ MAX_NUM_CHANNEL_TYPE ];
NbInfoOut* m_scanId2NbInfoOutArray[ MAX_CU_DEPTH+1 ][ MAX_CU_DEPTH+1 ][ MAX_NUM_CHANNEL_TYPE ];
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 ];
::memset(raster2id, 0, sizeof(raster2id));
#if !JVET_N0103_CGSIZE_HARMONIZATION
for( int ch = 0; ch < MAX_NUM_CHANNEL_TYPE; ch++ )
{
for( int hd = 0; hd <= MAX_CU_DEPTH; hd++ )
{
for( int vd = 0; vd <= MAX_CU_DEPTH; vd++ )
{
if( (hd == 0 && vd <= 1) || (hd <= 1 && vd == 0) )
{
continue;
}
const uint32_t blockWidth = (1 << hd);
const uint32_t blockHeight = (1 << vd);
#if JVET_N0103_CGSIZE_HARMONIZATION
const uint32_t log2CGWidth = g_log2SbbSize[hd][vd][0];
const uint32_t log2CGHeight = g_log2SbbSize[hd][vd][1];
#else
const uint32_t log2CGWidth = g_log2SbbSize[ch][hd][vd][0];
const uint32_t log2CGHeight = g_log2SbbSize[ch][hd][vd][1];
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 );
#if JVET_N0103_CGSIZE_HARMONIZATION
const ScanElement * scanId2RP = g_scanOrder[SCAN_GROUPED_4x4][scanType][blkWidthIdx][blkHeightIdx];
NbInfoSbb*& sId2NbSbb = m_scanId2NbInfoSbbArray[hd][vd];
NbInfoOut*& sId2NbOut = m_scanId2NbInfoOutArray[hd][vd];
#else
const ScanElement * scanId2RP = g_scanOrder[ch][SCAN_GROUPED_4x4][scanType][blkWidthIdx][blkHeightIdx];
NbInfoSbb*& sId2NbSbb = m_scanId2NbInfoSbbArray[hd][vd][ch];
NbInfoOut*& sId2NbOut = m_scanId2NbInfoOutArray[hd][vd][ch];
// consider only non-zero-out region
const uint32_t blkWidthNZOut = std::min<unsigned>( JVET_C0024_ZERO_OUT_TH, blockWidth );
const uint32_t blkHeightNZOut= std::min<unsigned>( JVET_C0024_ZERO_OUT_TH, blockHeight );
const uint32_t totalValues = blkWidthNZOut * blkHeightNZOut;
sId2NbSbb = new NbInfoSbb[ totalValues ];
sId2NbOut = new NbInfoOut[ totalValues ];
for( uint32_t scanId = 0; scanId < totalValues; scanId++ )
{
}
for( unsigned scanId = 0; scanId < totalValues; scanId++ )
{
const int posX = scanId2RP[scanId].x;
const int posY = scanId2RP[scanId].y;
const int rpos = scanId2RP[scanId].idx;
{
//===== 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 + 1 < blkWidthNZOut ? ( raster2id[rpos+1 ] < groupSize + begSbb ? raster2id[rpos+1 ] - begSbb : 0 ) : 0 );
cpos[1] = ( posX + 2 < blkWidthNZOut ? ( raster2id[rpos+2 ] < groupSize + begSbb ? raster2id[rpos+2 ] - begSbb : 0 ) : 0 );
cpos[2] = ( posX + 1 < blkWidthNZOut && posY + 1 < blkHeightNZOut ? ( raster2id[rpos+1+blockWidth] < groupSize + begSbb ? raster2id[rpos+1+blockWidth] - begSbb : 0 ) : 0 );
cpos[3] = ( posY + 1 < blkHeightNZOut ? ( raster2id[rpos+ blockWidth] < groupSize + begSbb ? raster2id[rpos+ blockWidth] - begSbb : 0 ) : 0 );
cpos[4] = ( posY + 2 < blkHeightNZOut ? ( raster2id[rpos+2*blockWidth] < groupSize + begSbb ? raster2id[rpos+2*blockWidth] - begSbb : 0 ) : 0 );
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
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 + 1 < blkWidthNZOut ? ( raster2id[rpos+1 ] >= groupSize + begSbb ? raster2id[rpos+1 ] : 0 ) : 0 );
cpos[1] = ( posX + 2 < blkWidthNZOut ? ( raster2id[rpos+2 ] >= groupSize + begSbb ? raster2id[rpos+2 ] : 0 ) : 0 );
cpos[2] = ( posX + 1 < blkWidthNZOut && posY + 1 < blkHeightNZOut ? ( raster2id[rpos+1+blockWidth] >= groupSize + begSbb ? raster2id[rpos+1+blockWidth] : 0 ) : 0 );
cpos[3] = ( posY + 1 < blkHeightNZOut ? ( raster2id[rpos+ blockWidth] >= groupSize + begSbb ? raster2id[rpos+ blockWidth] : 0 ) : 0 );
cpos[4] = ( posY + 2 < blkHeightNZOut ? ( raster2id[rpos+2*blockWidth] >= groupSize + begSbb ? raster2id[rpos+2*blockWidth] : 0 ) : 0 );
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
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++ )
{
CHECK(begSbb > nbOut.outPos[k], "Position must be past sub block begin");
nbOut.outPos[k] -= begSbb;
}
nbOut.maxDist -= scanId;
}
#if JVET_N0103_CGSIZE_HARMONIZATION
for( int chId = 0; chId < MAX_NUM_CHANNEL_TYPE; chId++ )
{
m_tuParameters[hd][vd][chId] = new TUParameters( *this, blockWidth, blockHeight, ChannelType(chId) );
}
#else
m_tuParameters[hd][vd][ch] = new TUParameters( *this, blockWidth, blockHeight, ChannelType(ch) );
}
}
#if !JVET_N0103_CGSIZE_HARMONIZATION
m_scansInitialized = true;
}
void Rom::xUninitScanArrays()
{
if( !m_scansInitialized )
{
return;
}
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
#if JVET_N0103_CGSIZE_HARMONIZATION
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;
}
}
}
}
#else
for( int hd = 0; hd <= MAX_CU_DEPTH; hd++ )
{
for( int vd = 0; vd <= MAX_CU_DEPTH; vd++ )
{
for( int ch = 0; ch < 2; ch++ )
{
NbInfoSbb*& sId2NbSbb = m_scanId2NbInfoSbbArray[hd][vd][ch];
NbInfoOut*& sId2NbOut = m_scanId2NbInfoOutArray[hd][vd][ch];
TUParameters*& tuPars = m_tuParameters [hd][vd][ch];
if( sId2NbSbb )
{
delete [] sId2NbSbb;
}
if( sId2NbOut )
{
delete [] sId2NbOut;
}
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;
const uint32_t nonzeroWidth = std::min<uint32_t>(JVET_C0024_ZERO_OUT_TH, m_width);
const uint32_t nonzeroHeight = std::min<uint32_t>(JVET_C0024_ZERO_OUT_TH, m_height);
m_numCoeff = nonzeroWidth * nonzeroHeight;
#if JVET_N0103_CGSIZE_HARMONIZATION
m_log2SbbWidth = g_log2SbbSize[ g_aucLog2[m_width] ][ g_aucLog2[m_height] ][0];
m_log2SbbHeight = g_log2SbbSize[ g_aucLog2[m_width] ][ g_aucLog2[m_height] ][1];
#else
m_log2SbbWidth = g_log2SbbSize[m_chType][ g_aucLog2[m_width] ][ g_aucLog2[m_height] ][0];
m_log2SbbHeight = g_log2SbbSize[m_chType][ g_aucLog2[m_width] ][ g_aucLog2[m_height] ][1];
m_log2SbbSize = m_log2SbbWidth + m_log2SbbHeight;
m_sbbSize = ( 1 << m_log2SbbSize );
m_sbbMask = m_sbbSize - 1;
m_widthInSbb = nonzeroWidth >> m_log2SbbWidth;
m_heightInSbb = nonzeroHeight >> 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 );
#if JVET_N0103_CGSIZE_HARMONIZATION
m_scanSbbId2SbbPos = g_scanOrder [ SCAN_UNGROUPED ][ m_scanType ][ hsbb ][ vsbb ];
m_scanId2BlkPos = g_scanOrder [ SCAN_GROUPED_4x4 ][ m_scanType ][ hsId ][ vsId ];
int log2W = g_aucLog2[ m_width ];
int log2H = g_aucLog2[ m_height ];
m_scanId2NbInfoSbb = rom.getNbInfoSbb( log2W, log2H );
m_scanId2NbInfoOut = rom.getNbInfoOut( log2W, log2H );
#else
m_scanSbbId2SbbPos = g_scanOrder [ chType ][ SCAN_UNGROUPED ][ m_scanType ][ hsbb ][ vsbb ];
m_scanId2BlkPos = g_scanOrder [ chType ][ SCAN_GROUPED_4x4 ][ m_scanType ][ hsId ][ vsId ];
int log2W = g_aucLog2[ m_width ];
int log2H = g_aucLog2[ m_height ];
m_scanId2NbInfoSbb = rom.getNbInfoSbb( log2W, log2H, chType );
m_scanId2NbInfoOut = rom.getNbInfoOut( log2W, log2H, chType );
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].idx;
scanInfo.sbbPos = m_scanSbbId2SbbPos[scanIdx >> m_log2SbbSize].idx;
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;
scanInfo.posX = m_scanId2BlkPos[scanIdx].x;
scanInfo.posY = m_scanId2BlkPos[scanIdx].y;
if( scanIdx )
{
const int nextScanIdx = scanIdx - 1;
const int diag = m_scanId2BlkPos[nextScanIdx].x + m_scanId2BlkPos[nextScanIdx].y;
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].idx;
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_scanId2Pos[scanIdx].x] + m_lastBitsY[m_scanId2Pos[scanIdx].y];
}
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:
int32_t m_lastBitsX [ MAX_TB_SIZEY ];
int32_t m_lastBitsY [ MAX_TB_SIZEY ];
BinFracBits m_sigSbbFracBits [ sm_maxNumSigSbbCtx ];
BinFracBits m_sigFracBits [ sm_numCtxSetsSig ][ sm_maxNumSigCtx ];
CoeffFracBits m_gtxFracBits [ sm_maxNumGtxCtx ];

Karsten Suehring
committed
};
void RateEstimator::initCtx( const TUParameters& tuPars, const TransformUnit& tu, const ComponentID compID, const FracBitsAccess& fracBitsAccess )
{
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
{
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
BinFracBits bits;
bool prevLumaCbf = false;
bool lastCbfIsInferred = false;
bool useIntraSubPartitions = tu.cu->ispMode && isLuma(chType);
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 )
{
prevLumaCbf = TU::getPrevTuCbfAtDepth(tu, compID, tu.depth);
}
bits = fracBitsAccess.getFracBitsArray(Ctx::QtCbf[compID](DeriveCtx::CtxQtCbf(compID, tu.depth, prevLumaCbf, true)));
}
else
{
bits = fracBitsAccess.getFracBitsArray(Ctx::QtCbf[compID](DeriveCtx::CtxQtCbf(compID, tu.depth, tu.cbf[COMPONENT_Cb])));
}
cbfDeltaBits = lastCbfIsInferred ? 0 : 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 );
uint32_t sumFBits = 0;
unsigned maxCtxId = g_uiGroupIdx[std::min<unsigned>(JVET_C0024_ZERO_OUT_TH, 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 < std::min<unsigned>(JVET_C0024_ZERO_OUT_TH, size); pos++)
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
{
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];
}
}

Karsten Suehring
committed
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
/*================================================================================*/
/*===== =====*/
/*===== D A T A S T R U C T U R E S =====*/
/*===== =====*/
/*================================================================================*/
struct PQData
{
TCoeff absLevel;
int64_t deltaDist;
};
struct Decision
{
int64_t rdCost;
TCoeff absLevel;
int prevId;
};
/*================================================================================*/
/*===== =====*/
/*===== P R E - Q U A N T I Z E R =====*/
/*===== =====*/
/*================================================================================*/
class Quantizer
{
public:
Quantizer() {}
#if JVET_N0847_SCALING_LISTS
void dequantBlock ( const TransformUnit& tu, const ComponentID compID, const QpParam& cQP, CoeffBuf& recCoeff, bool enableScalingLists, int* piDequantCoef ) const;
void initQuantBlock2Pos ( const TransformUnit& tu, const ComponentID compID, const QpParam& cQP, const double lambda, int gValue );
inline void preQuantCoeff( const TCoeff absCoeff, PQData *pqData, int QuanCoeff ) const;
#else
void dequantBlock ( const TransformUnit& tu, const ComponentID compID, const QpParam& cQP, CoeffBuf& recCoeff) const;

Karsten Suehring
committed
void initQuantBlock( const TransformUnit& tu, const ComponentID compID, const QpParam& cQP, const double lambda );

Karsten Suehring
committed
inline void preQuantCoeff(const TCoeff absCoeff, PQData *pqData) const;

Karsten Suehring
committed
inline TCoeff getLastThreshold() const { return m_thresLast; }
inline TCoeff getSSbbThreshold() const { return m_thresSSbb; }
#if JVET_N0847_SCALING_LISTS
inline int64_t getQScale() const { return m_QScale; }
#endif

Karsten Suehring
committed
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
private:
// quantization
int m_QShift;
int64_t m_QAdd;
int64_t m_QScale;
TCoeff m_maxQIdx;
TCoeff m_thresLast;
TCoeff m_thresSSbb;
// distortion normalization
int m_DistShift;
int64_t m_DistAdd;
int64_t m_DistStepAdd;
int64_t m_DistOrgFact;
};
inline int ceil_log2(uint64_t x)
{
static const uint64_t t[6] = { 0xFFFFFFFF00000000ull, 0x00000000FFFF0000ull, 0x000000000000FF00ull, 0x00000000000000F0ull, 0x000000000000000Cull, 0x0000000000000002ull };
int y = (((x & (x - 1)) == 0) ? 0 : 1);
int j = 32;
for( int i = 0; i < 6; i++)
{
int k = (((x & t[i]) == 0) ? 0 : j);
y += k;
x >>= k;
j >>= 1;
}
return y;
}
#if JVET_N0847_SCALING_LISTS
void Quantizer::initQuantBlock2Pos(const TransformUnit& tu, const ComponentID compID, const QpParam& cQP, const double lambda, int gValue)
{
#if HEVC_USE_SCALING_LISTS && !JVET_N0847_SCALING_LISTS
CHECK(tu.cs->sps->getScalingListFlag(), "Scaling lists not supported");
#endif
CHECKD(lambda <= 0.0, "Lambda must be greater than 0");
const int qpDQ = cQP.Qp + 1;
const int qpPer = qpDQ / 6;
const int qpRem = qpDQ - 6 * qpPer;
const SPS& sps = *tu.cs->sps;
const CompArea& area = tu.blocks[compID];
const ChannelType chType = toChannelType(compID);
const int channelBitDepth = sps.getBitDepth(chType);
const int maxLog2TrDynamicRange = sps.getMaxLog2TrDynamicRange(chType);
const int nomTransformShift = getTransformShift(channelBitDepth, area.size(), maxLog2TrDynamicRange);
const bool clipTransformShift = (tu.mtsIdx == MTS_SKIP && sps.getSpsRangeExtension().getExtendedPrecisionProcessingFlag());
#if JVET_N0246_MODIFIED_QUANTSCALES
const bool needsSqrt2ScaleAdjustment = TU::needsSqrt2Scale(tu, compID);
const int transformShift = (clipTransformShift ? std::max<int>(0, nomTransformShift) : nomTransformShift) + (needsSqrt2ScaleAdjustment ? -1 : 0);
#else
const int transformShift = (clipTransformShift ? std::max<int>(0, nomTransformShift) : nomTransformShift);
#endif
// quant parameters
m_QShift = QUANT_SHIFT - 1 + qpPer + transformShift;
m_QAdd = -((3 << m_QShift) >> 1);
#if JVET_N0246_MODIFIED_QUANTSCALES
Intermediate_Int invShift = IQUANT_SHIFT + 1 - qpPer - transformShift;
m_QScale = g_quantScales[needsSqrt2ScaleAdjustment ? 1 : 0][qpRem];
#else // JVET_N0246_MODIFIED_QUANTSCALES
#if HM_QTBT_AS_IN_JEM_QUANT
Intermediate_Int invShift = IQUANT_SHIFT + 1 - qpPer - transformShift + (TU::needsBlockSizeTrafoScale(tu, compID) ? ADJ_DEQUANT_SHIFT : 0);
m_QScale = (TU::needsSqrt2Scale(tu, compID) ? (g_quantScales[qpRem] * 181) >> 7 : g_quantScales[qpRem]);
#else
Intermediate_Int invShift = IQUANT_SHIFT + 1 - qpPer - transformShift;
m_QScale = g_quantScales[qpRem];
#endif
#endif // JVET_N0246_MODIFIED_QUANTSCALES
const unsigned qIdxBD = std::min<unsigned>(maxLog2TrDynamicRange + 1, 8 * sizeof(Intermediate_Int) + invShift - IQUANT_SHIFT - 1);
m_maxQIdx = (1 << (qIdxBD - 1)) - 4;
#if JVET_N0847_SCALING_LISTS
m_thresLast = TCoeff((int64_t(3) << m_QShift));
m_thresSSbb = TCoeff((int64_t(3) << m_QShift));
#else
m_thresLast = TCoeff((int64_t(3) << m_QShift) / (4 * m_QScale));
m_thresSSbb = TCoeff((int64_t(3) << m_QShift) / (4 * m_QScale));
#endif

Karsten Suehring
committed
const int64_t qScale = gValue;
#if HM_QTBT_AS_IN_JEM_QUANT
const int nomDShift = SCALE_BITS - 2 * (nomTransformShift + DISTORTION_PRECISION_ADJUSTMENT(channelBitDepth)) + m_QShift;
#else
const int nomDShift = SCALE_BITS - 2 * (nomTransformShift + DISTORTION_PRECISION_ADJUSTMENT(channelBitDepth))
+ m_QShift + (TU::needsQP3Offset(tu, compID) ? 1 : 0);
#endif
const double qScale2 = double(qScale * qScale);
const double nomDistFactor = (nomDShift < 0 ? 1.0 / (double(int64_t(1) << (-nomDShift))*qScale2*lambda) : double(int64_t(1) << nomDShift) / (qScale2*lambda));
const int64_t pow2dfShift = (int64_t)(nomDistFactor * qScale2) + 1;
m_DistShift = 62 + m_QShift - 2 * maxLog2TrDynamicRange - dfShift;
m_DistAdd = (int64_t(1) << m_DistShift) >> 1;
m_DistStepAdd = (int64_t)(nomDistFactor * double(int64_t(1) << (m_DistShift + m_QShift)) + .5);
m_DistOrgFact = (int64_t)(nomDistFactor * double(int64_t(1) << (m_DistShift + 1)) + .5);
}
#endif

Karsten Suehring
committed
void Quantizer::initQuantBlock( const TransformUnit& tu, const ComponentID compID, const QpParam& cQP, const double lambda )
{
#if HEVC_USE_SCALING_LISTS && !JVET_N0847_SCALING_LISTS

Karsten Suehring
committed
CHECK ( tu.cs->sps->getScalingListFlag(), "Scaling lists not supported" );
#endif
CHECKD( lambda <= 0.0, "Lambda must be greater than 0" );
const int qpDQ = cQP.Qp + 1;
const int qpPer = qpDQ / 6;
const int qpRem = qpDQ - 6 * qpPer;
const SPS& sps = *tu.cs->sps;
const CompArea& area = tu.blocks[ compID ];
const ChannelType chType = toChannelType( compID );
const int channelBitDepth = sps.getBitDepth( chType );
const int maxLog2TrDynamicRange = sps.getMaxLog2TrDynamicRange( chType );
const int nomTransformShift = getTransformShift( channelBitDepth, area.size(), maxLog2TrDynamicRange );
const bool clipTransformShift = ( tu.mtsIdx==MTS_SKIP && sps.getSpsRangeExtension().getExtendedPrecisionProcessingFlag() );
#if JVET_N0246_MODIFIED_QUANTSCALES
const bool needsSqrt2ScaleAdjustment = TU::needsSqrt2Scale(tu, compID);
const int transformShift = ( clipTransformShift ? std::max<int>( 0, nomTransformShift ) : nomTransformShift ) + (needsSqrt2ScaleAdjustment?-1:0);
#else

Karsten Suehring
committed
const int transformShift = ( clipTransformShift ? std::max<int>( 0, nomTransformShift ) : nomTransformShift );

Karsten Suehring
committed
// quant parameters
m_QShift = QUANT_SHIFT - 1 + qpPer + transformShift;
m_QAdd = -( ( 3 << m_QShift ) >> 1 );
#if JVET_N0246_MODIFIED_QUANTSCALES
Intermediate_Int invShift = IQUANT_SHIFT + 1 - qpPer - transformShift;
m_QScale = g_quantScales[needsSqrt2ScaleAdjustment?1:0][ qpRem ];
#else // JVET_N0246_MODIFIED_QUANTSCALES

Karsten Suehring
committed
#if HM_QTBT_AS_IN_JEM_QUANT
Intermediate_Int invShift = IQUANT_SHIFT + 1 - qpPer - transformShift + ( TU::needsBlockSizeTrafoScale( tu, compID ) ? ADJ_DEQUANT_SHIFT : 0 );
m_QScale = ( TU::needsSqrt2Scale( tu, compID ) ? ( g_quantScales[ qpRem ] * 181 ) >> 7 : g_quantScales[ qpRem ] );

Karsten Suehring
committed
#else
Intermediate_Int invShift = IQUANT_SHIFT + 1 - qpPer - transformShift;
m_QScale = g_quantScales [ qpRem ];
#endif
#endif // JVET_N0246_MODIFIED_QUANTSCALES

Karsten Suehring
committed
const unsigned qIdxBD = std::min<unsigned>( maxLog2TrDynamicRange + 1, 8*sizeof(Intermediate_Int) + invShift - IQUANT_SHIFT - 1 );
m_maxQIdx = ( 1 << (qIdxBD-1) ) - 4;
m_thresLast = TCoeff( ( int64_t(3) << m_QShift ) / ( 4 * m_QScale ) );
m_thresSSbb = TCoeff( ( int64_t(3) << m_QShift ) / ( 4 * m_QScale ) );
// distortion calculation parameters
#if JVET_N0246_MODIFIED_QUANTSCALES
const int64_t qScale = m_QScale;
const int nomDShift =
SCALE_BITS - 2 * (nomTransformShift + DISTORTION_PRECISION_ADJUSTMENT(channelBitDepth)) + m_QShift + (needsSqrt2ScaleAdjustment ? 1 : 0);
#else // JVET_N0246_MODIFIED_QUANTSCALES

Karsten Suehring
committed
const int64_t qScale = g_quantScales[ qpRem ];
#if HM_QTBT_AS_IN_JEM_QUANT
const int nomDShift = SCALE_BITS - 2 * (nomTransformShift + DISTORTION_PRECISION_ADJUSTMENT(channelBitDepth)) + m_QShift;

Karsten Suehring
committed
#else
const int nomDShift = SCALE_BITS - 2 * (nomTransformShift + DISTORTION_PRECISION_ADJUSTMENT(channelBitDepth))
+ m_QShift + (TU::needsQP3Offset(tu, compID) ? 1 : 0);
#endif
#endif // JVET_N0246_MODIFIED_QUANTSCALES

Karsten Suehring
committed
const double qScale2 = double( qScale * qScale );
const double nomDistFactor = ( nomDShift < 0 ? 1.0/(double(int64_t(1)<<(-nomDShift))*qScale2*lambda) : double(int64_t(1)<<nomDShift)/(qScale2*lambda) );
const int64_t pow2dfShift = (int64_t)( nomDistFactor * qScale2 ) + 1;
const int dfShift = ceil_log2( pow2dfShift );
m_DistShift = 62 + m_QShift - 2*maxLog2TrDynamicRange - dfShift;
m_DistAdd = (int64_t(1) << m_DistShift) >> 1;
m_DistStepAdd = (int64_t)( nomDistFactor * double(int64_t(1)<<(m_DistShift+m_QShift)) + .5 );
m_DistOrgFact = (int64_t)( nomDistFactor * double(int64_t(1)<<(m_DistShift+1 )) + .5 );
}
#if JVET_N0847_SCALING_LISTS
void Quantizer::dequantBlock( const TransformUnit& tu, const ComponentID compID, const QpParam& cQP, CoeffBuf& recCoeff, bool enableScalingLists, int* piDequantCoef) const
#else

Karsten Suehring
committed
void Quantizer::dequantBlock( const TransformUnit& tu, const ComponentID compID, const QpParam& cQP, CoeffBuf& recCoeff ) const

Karsten Suehring
committed
{
#if HEVC_USE_SCALING_LISTS && !JVET_N0847_SCALING_LISTS

Karsten Suehring
committed
CHECK ( tu.cs->sps->getScalingListFlag(), "Scaling lists not supported" );
#endif
//----- set basic parameters -----
const CompArea& area = tu.blocks[ compID ];
const int numCoeff = area.area();
const SizeType hsId = gp_sizeIdxInfo->idxFrom( area.width );
const SizeType vsId = gp_sizeIdxInfo->idxFrom( area.height );
#if HEVC_USE_MDCS
const CoeffScanType scanType = CoeffScanType( TU::getCoefScanIdx( tu, compID ) );
#else
const CoeffScanType scanType = SCAN_DIAG;
#endif
#if JVET_N0103_CGSIZE_HARMONIZATION
const ScanElement *scan = g_scanOrder[SCAN_GROUPED_4x4][scanType][hsId][vsId];
#else
const ScanElement *scan = g_scanOrder[toChannelType(compID)][SCAN_GROUPED_4x4][scanType][hsId][vsId];

Karsten Suehring
committed
const TCoeff* qCoeff = tu.getCoeffs( compID ).buf;
TCoeff* tCoeff = recCoeff.buf;
//----- reset coefficients and get last scan index -----
::memset( tCoeff, 0, numCoeff * sizeof(TCoeff) );
int lastScanIdx = -1;
for( int scanIdx = numCoeff - 1; scanIdx >= 0; scanIdx-- )
{

Karsten Suehring
committed
{
lastScanIdx = scanIdx;
break;
}
}
if( lastScanIdx < 0 )
{
return;
}
//----- set dequant parameters -----
const int qpDQ = cQP.Qp + 1;
const int qpPer = qpDQ / 6;
const int qpRem = qpDQ - 6 * qpPer;
const SPS& sps = *tu.cs->sps;
const ChannelType chType = toChannelType( compID );
const int channelBitDepth = sps.getBitDepth( chType );
const int maxLog2TrDynamicRange = sps.getMaxLog2TrDynamicRange( chType );
const TCoeff minTCoeff = -( 1 << maxLog2TrDynamicRange );
const TCoeff maxTCoeff = ( 1 << maxLog2TrDynamicRange ) - 1;
const int nomTransformShift = getTransformShift( channelBitDepth, area.size(), maxLog2TrDynamicRange );
const bool clipTransformShift = ( tu.mtsIdx==MTS_SKIP && sps.getSpsRangeExtension().getExtendedPrecisionProcessingFlag() );
#if JVET_N0246_MODIFIED_QUANTSCALES
const bool needsSqrt2ScaleAdjustment = TU::needsSqrt2Scale(tu, compID);
const int transformShift = ( clipTransformShift ? std::max<int>( 0, nomTransformShift ) : nomTransformShift ) + (needsSqrt2ScaleAdjustment?-1:0);
#if JVET_N0847_SCALING_LISTS
Intermediate_Int shift = IQUANT_SHIFT + 1 - qpPer - transformShift + (enableScalingLists ? LOG2_SCALING_LIST_NEUTRAL_VALUE : 0);
#else
Intermediate_Int shift = IQUANT_SHIFT + 1 - qpPer - transformShift;
Intermediate_Int invQScale = g_invQuantScales[needsSqrt2ScaleAdjustment?1:0][ qpRem ];
#else // JVET_N0246_MODIFIED_QUANTSCALES

Karsten Suehring
committed
const int transformShift = ( clipTransformShift ? std::max<int>( 0, nomTransformShift ) : nomTransformShift );
#if HM_QTBT_AS_IN_JEM_QUANT
Intermediate_Int shift = IQUANT_SHIFT + 1 - qpPer - transformShift + ( TU::needsBlockSizeTrafoScale( tu, compID ) ? ADJ_DEQUANT_SHIFT : 0 );
Intermediate_Int invQScale = g_invQuantScales[ qpRem ] * ( TU::needsSqrt2Scale( tu, compID ) ? 181 : 1 );

Karsten Suehring
committed
#else
Intermediate_Int shift = IQUANT_SHIFT + 1 - qpPer - transformShift;
Intermediate_Int invQScale = g_invQuantScales[ qpRem ];
#endif
#endif // JVET_N0246_MODIFIED_QUANTSCALES
#if JVET_N0847_SCALING_LISTS
Intermediate_Int add = (shift < 0) ? 0 : ((1 << shift) >> 1);
#else

Karsten Suehring
committed
if( shift < 0 )
{
invQScale <<= -shift;
shift = 0;
}
Intermediate_Int add = ( 1 << shift ) >> 1;

Karsten Suehring
committed
//----- dequant coefficients -----
for( int state = 0, scanIdx = lastScanIdx; scanIdx >= 0; scanIdx-- )
{

Karsten Suehring
committed
const TCoeff& level = qCoeff[ rasterPos ];
if( level )
{
#if JVET_N0847_SCALING_LISTS
if (enableScalingLists)
invQScale = piDequantCoef[rasterPos];//scalingfactor*levelScale
if (shift < 0)
{
invQScale <<= -shift;
shift = 0;
//add = (1 << shift) >> 1;
}
#endif

Karsten Suehring
committed
Intermediate_Int qIdx = ( level << 1 ) + ( level > 0 ? -(state>>1) : (state>>1) );
Intermediate_Int nomTCoeff = ( qIdx * invQScale + add ) >> shift;
tCoeff[ rasterPos ] = (TCoeff)Clip3<Intermediate_Int>( minTCoeff, maxTCoeff, nomTCoeff );
}
state = ( 32040 >> ((state<<2)+((level&1)<<1)) ) & 3; // the 16-bit value "32040" represent the state transition table
}
}
#if JVET_N0847_SCALING_LISTS
inline void Quantizer::preQuantCoeff(const TCoeff absCoeff, PQData *pqData, int QuanCoeff) const
#else

Karsten Suehring
committed
inline void Quantizer::preQuantCoeff(const TCoeff absCoeff, PQData *pqData) const