2008 lines
70 KiB
C++
2008 lines
70 KiB
C++
/* The copyright in this software is being made available under the BSD
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* License, included below. This software may be subject to other third party
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* and contributor rights, including patent rights, and no such rights are
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* granted under this license.
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*
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* Copyright (c) 2010-2014, ITU/ISO/IEC
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/** \file TEncSbac.cpp
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\brief SBAC encoder class
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*/
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#include "TEncTop.h"
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#include "TEncSbac.h"
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#include "TLibCommon/TComTU.h"
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#include <map>
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#include <algorithm>
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#if ENVIRONMENT_VARIABLE_DEBUG_AND_TEST
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#include "../TLibCommon/Debug.h"
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#endif
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//! \ingroup TLibEncoder
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//! \{
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// ====================================================================================================================
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// Constructor / destructor / create / destroy
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// ====================================================================================================================
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TEncSbac::TEncSbac()
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// new structure here
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: m_pcBitIf ( NULL )
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, m_pcSlice ( NULL )
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, m_pcBinIf ( NULL )
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, m_numContextModels ( 0 )
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, m_cCUSplitFlagSCModel ( 1, 1, NUM_SPLIT_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUSkipFlagSCModel ( 1, 1, NUM_SKIP_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUMergeFlagExtSCModel ( 1, 1, NUM_MERGE_FLAG_EXT_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUMergeIdxExtSCModel ( 1, 1, NUM_MERGE_IDX_EXT_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUPartSizeSCModel ( 1, 1, NUM_PART_SIZE_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUPredModeSCModel ( 1, 1, NUM_PRED_MODE_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUIntraPredSCModel ( 1, 1, NUM_ADI_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUChromaPredSCModel ( 1, 1, NUM_CHROMA_PRED_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUDeltaQpSCModel ( 1, 1, NUM_DELTA_QP_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUInterDirSCModel ( 1, 1, NUM_INTER_DIR_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCURefPicSCModel ( 1, 1, NUM_REF_NO_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUMvdSCModel ( 1, 1, NUM_MV_RES_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUQtCbfSCModel ( 1, NUM_QT_CBF_CTX_SETS, NUM_QT_CBF_CTX_PER_SET , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUTransSubdivFlagSCModel ( 1, 1, NUM_TRANS_SUBDIV_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUQtRootCbfSCModel ( 1, 1, NUM_QT_ROOT_CBF_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUSigCoeffGroupSCModel ( 1, 2, NUM_SIG_CG_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUSigSCModel ( 1, 1, NUM_SIG_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCuCtxLastX ( 1, NUM_CTX_LAST_FLAG_SETS, NUM_CTX_LAST_FLAG_XY , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCuCtxLastY ( 1, NUM_CTX_LAST_FLAG_SETS, NUM_CTX_LAST_FLAG_XY , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUOneSCModel ( 1, 1, NUM_ONE_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCUAbsSCModel ( 1, 1, NUM_ABS_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cMVPIdxSCModel ( 1, 1, NUM_MVP_IDX_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cSaoMergeSCModel ( 1, 1, NUM_SAO_MERGE_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cSaoTypeIdxSCModel ( 1, 1, NUM_SAO_TYPE_IDX_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cTransformSkipSCModel ( 1, MAX_NUM_CHANNEL_TYPE, NUM_TRANSFORMSKIP_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_CUTransquantBypassFlagSCModel ( 1, 1, NUM_CU_TRANSQUANT_BYPASS_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_explicitRdpcmFlagSCModel ( 1, MAX_NUM_CHANNEL_TYPE, NUM_EXPLICIT_RDPCM_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_explicitRdpcmDirSCModel ( 1, MAX_NUM_CHANNEL_TYPE, NUM_EXPLICIT_RDPCM_DIR_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_cCrossComponentPredictionSCModel ( 1, 1, NUM_CROSS_COMPONENT_PREDICTION_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_ChromaQpAdjFlagSCModel ( 1, 1, NUM_CHROMA_QP_ADJ_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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, m_ChromaQpAdjIdcSCModel ( 1, 1, NUM_CHROMA_QP_ADJ_IDC_CTX , m_contextModels + m_numContextModels, m_numContextModels)
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{
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assert( m_numContextModels <= MAX_NUM_CTX_MOD );
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}
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TEncSbac::~TEncSbac()
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{
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}
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// ====================================================================================================================
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// Public member functions
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// ====================================================================================================================
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Void TEncSbac::resetEntropy ()
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{
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Int iQp = m_pcSlice->getSliceQp();
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SliceType eSliceType = m_pcSlice->getSliceType();
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Int encCABACTableIdx = m_pcSlice->getPPS()->getEncCABACTableIdx();
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if (!m_pcSlice->isIntra() && (encCABACTableIdx==B_SLICE || encCABACTableIdx==P_SLICE) && m_pcSlice->getPPS()->getCabacInitPresentFlag())
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{
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eSliceType = (SliceType) encCABACTableIdx;
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}
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m_cCUSplitFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SPLIT_FLAG );
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m_cCUSkipFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SKIP_FLAG );
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m_cCUMergeFlagExtSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MERGE_FLAG_EXT);
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m_cCUMergeIdxExtSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MERGE_IDX_EXT);
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m_cCUPartSizeSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_PART_SIZE );
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m_cCUPredModeSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_PRED_MODE );
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m_cCUIntraPredSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_INTRA_PRED_MODE );
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m_cCUChromaPredSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CHROMA_PRED_MODE );
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m_cCUInterDirSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_INTER_DIR );
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m_cCUMvdSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MVD );
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m_cCURefPicSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_REF_PIC );
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m_cCUDeltaQpSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_DQP );
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m_cCUQtCbfSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_QT_CBF );
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m_cCUQtRootCbfSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_QT_ROOT_CBF );
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m_cCUSigCoeffGroupSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SIG_CG_FLAG );
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m_cCUSigSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SIG_FLAG );
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m_cCuCtxLastX.initBuffer ( eSliceType, iQp, (UChar*)INIT_LAST );
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m_cCuCtxLastY.initBuffer ( eSliceType, iQp, (UChar*)INIT_LAST );
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m_cCUOneSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_ONE_FLAG );
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m_cCUAbsSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_ABS_FLAG );
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m_cMVPIdxSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MVP_IDX );
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m_cCUTransSubdivFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_TRANS_SUBDIV_FLAG );
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m_cSaoMergeSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SAO_MERGE_FLAG );
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m_cSaoTypeIdxSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SAO_TYPE_IDX );
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m_cTransformSkipSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_TRANSFORMSKIP_FLAG );
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m_CUTransquantBypassFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CU_TRANSQUANT_BYPASS_FLAG );
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m_explicitRdpcmFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_EXPLICIT_RDPCM_FLAG);
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m_explicitRdpcmDirSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_EXPLICIT_RDPCM_DIR);
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m_cCrossComponentPredictionSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CROSS_COMPONENT_PREDICTION );
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m_ChromaQpAdjFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CHROMA_QP_ADJ_FLAG );
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m_ChromaQpAdjIdcSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CHROMA_QP_ADJ_IDC );
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for (UInt statisticIndex = 0; statisticIndex < RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS ; statisticIndex++)
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{
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m_golombRiceAdaptationStatistics[statisticIndex] = 0;
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}
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m_pcBinIf->start();
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return;
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}
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/** The function does the following:
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* If current slice type is P/B then it determines the distance of initialisation type 1 and 2 from the current CABAC states and
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* stores the index of the closest table. This index is used for the next P/B slice when cabac_init_present_flag is true.
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*/
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Void TEncSbac::determineCabacInitIdx()
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{
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Int qp = m_pcSlice->getSliceQp();
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if (!m_pcSlice->isIntra())
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{
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SliceType aSliceTypeChoices[] = {B_SLICE, P_SLICE};
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UInt bestCost = MAX_UINT;
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SliceType bestSliceType = aSliceTypeChoices[0];
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for (UInt idx=0; idx<2; idx++)
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{
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UInt curCost = 0;
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SliceType curSliceType = aSliceTypeChoices[idx];
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curCost = m_cCUSplitFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SPLIT_FLAG );
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curCost += m_cCUSkipFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SKIP_FLAG );
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curCost += m_cCUMergeFlagExtSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MERGE_FLAG_EXT);
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curCost += m_cCUMergeIdxExtSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MERGE_IDX_EXT);
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curCost += m_cCUPartSizeSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_PART_SIZE );
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curCost += m_cCUPredModeSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_PRED_MODE );
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curCost += m_cCUIntraPredSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_INTRA_PRED_MODE );
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curCost += m_cCUChromaPredSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CHROMA_PRED_MODE );
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curCost += m_cCUInterDirSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_INTER_DIR );
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curCost += m_cCUMvdSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MVD );
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curCost += m_cCURefPicSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_REF_PIC );
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curCost += m_cCUDeltaQpSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_DQP );
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curCost += m_cCUQtCbfSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_QT_CBF );
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curCost += m_cCUQtRootCbfSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_QT_ROOT_CBF );
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curCost += m_cCUSigCoeffGroupSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SIG_CG_FLAG );
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curCost += m_cCUSigSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SIG_FLAG );
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curCost += m_cCuCtxLastX.calcCost ( curSliceType, qp, (UChar*)INIT_LAST );
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curCost += m_cCuCtxLastY.calcCost ( curSliceType, qp, (UChar*)INIT_LAST );
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curCost += m_cCUOneSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_ONE_FLAG );
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curCost += m_cCUAbsSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_ABS_FLAG );
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curCost += m_cMVPIdxSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MVP_IDX );
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curCost += m_cCUTransSubdivFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_TRANS_SUBDIV_FLAG );
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curCost += m_cSaoMergeSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SAO_MERGE_FLAG );
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curCost += m_cSaoTypeIdxSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SAO_TYPE_IDX );
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curCost += m_cTransformSkipSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_TRANSFORMSKIP_FLAG );
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curCost += m_CUTransquantBypassFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CU_TRANSQUANT_BYPASS_FLAG );
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curCost += m_explicitRdpcmFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_EXPLICIT_RDPCM_FLAG);
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curCost += m_explicitRdpcmDirSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_EXPLICIT_RDPCM_DIR);
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curCost += m_cCrossComponentPredictionSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CROSS_COMPONENT_PREDICTION );
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curCost += m_ChromaQpAdjFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CHROMA_QP_ADJ_FLAG );
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curCost += m_ChromaQpAdjIdcSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CHROMA_QP_ADJ_IDC );
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if (curCost < bestCost)
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{
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bestSliceType = curSliceType;
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bestCost = curCost;
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}
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}
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m_pcSlice->getPPS()->setEncCABACTableIdx( bestSliceType );
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}
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else
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{
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m_pcSlice->getPPS()->setEncCABACTableIdx( I_SLICE );
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}
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}
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Void TEncSbac::codeVPS( TComVPS* pcVPS )
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{
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assert (0);
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return;
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}
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Void TEncSbac::codeSPS( TComSPS* pcSPS )
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{
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assert (0);
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return;
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}
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Void TEncSbac::codePPS( TComPPS* pcPPS )
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{
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assert (0);
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return;
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}
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Void TEncSbac::codeSliceHeader( TComSlice* pcSlice )
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{
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assert (0);
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return;
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}
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Void TEncSbac::codeTilesWPPEntryPoint( TComSlice* pSlice )
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{
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assert (0);
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return;
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}
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Void TEncSbac::codeTerminatingBit( UInt uilsLast )
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{
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m_pcBinIf->encodeBinTrm( uilsLast );
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}
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Void TEncSbac::codeSliceFinish()
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{
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m_pcBinIf->finish();
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}
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Void TEncSbac::xWriteUnarySymbol( UInt uiSymbol, ContextModel* pcSCModel, Int iOffset )
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{
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m_pcBinIf->encodeBin( uiSymbol ? 1 : 0, pcSCModel[0] );
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if( 0 == uiSymbol)
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{
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return;
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}
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while( uiSymbol-- )
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{
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m_pcBinIf->encodeBin( uiSymbol ? 1 : 0, pcSCModel[ iOffset ] );
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}
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return;
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}
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Void TEncSbac::xWriteUnaryMaxSymbol( UInt uiSymbol, ContextModel* pcSCModel, Int iOffset, UInt uiMaxSymbol )
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{
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if (uiMaxSymbol == 0)
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{
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return;
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}
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m_pcBinIf->encodeBin( uiSymbol ? 1 : 0, pcSCModel[ 0 ] );
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if ( uiSymbol == 0 )
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{
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return;
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}
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Bool bCodeLast = ( uiMaxSymbol > uiSymbol );
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while( --uiSymbol )
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{
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m_pcBinIf->encodeBin( 1, pcSCModel[ iOffset ] );
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}
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if( bCodeLast )
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{
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m_pcBinIf->encodeBin( 0, pcSCModel[ iOffset ] );
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}
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return;
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}
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Void TEncSbac::xWriteEpExGolomb( UInt uiSymbol, UInt uiCount )
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{
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UInt bins = 0;
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Int numBins = 0;
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while( uiSymbol >= (UInt)(1<<uiCount) )
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{
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bins = 2 * bins + 1;
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numBins++;
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uiSymbol -= 1 << uiCount;
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uiCount ++;
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}
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bins = 2 * bins + 0;
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numBins++;
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bins = (bins << uiCount) | uiSymbol;
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numBins += uiCount;
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assert( numBins <= 32 );
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m_pcBinIf->encodeBinsEP( bins, numBins );
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}
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/** Coding of coeff_abs_level_minus3
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* \param uiSymbol value of coeff_abs_level_minus3
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* \param ruiGoRiceParam reference to Rice parameter
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* \returns Void
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*/
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Void TEncSbac::xWriteCoefRemainExGolomb ( UInt symbol, UInt &rParam, const Bool useLimitedPrefixLength, const ChannelType channelType )
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{
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Int codeNumber = (Int)symbol;
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UInt length;
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if (codeNumber < (COEF_REMAIN_BIN_REDUCTION << rParam))
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{
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length = codeNumber>>rParam;
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m_pcBinIf->encodeBinsEP( (1<<(length+1))-2 , length+1);
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m_pcBinIf->encodeBinsEP((codeNumber%(1<<rParam)),rParam);
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}
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else if (useLimitedPrefixLength)
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{
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const UInt maximumPrefixLength = (32 - (COEF_REMAIN_BIN_REDUCTION + g_maxTrDynamicRange[channelType]));
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UInt prefixLength = 0;
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UInt suffixLength = MAX_UINT;
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UInt codeValue = (symbol >> rParam) - COEF_REMAIN_BIN_REDUCTION;
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|
|
if (codeValue >= ((1 << maximumPrefixLength) - 1))
|
|
{
|
|
prefixLength = maximumPrefixLength;
|
|
suffixLength = g_maxTrDynamicRange[channelType] - rParam;
|
|
}
|
|
else
|
|
{
|
|
while (codeValue > ((2 << prefixLength) - 2))
|
|
{
|
|
prefixLength++;
|
|
}
|
|
|
|
suffixLength = prefixLength + 1; //+1 for the separator bit
|
|
}
|
|
|
|
const UInt suffix = codeValue - ((1 << prefixLength) - 1);
|
|
|
|
const UInt totalPrefixLength = prefixLength + COEF_REMAIN_BIN_REDUCTION;
|
|
const UInt prefix = (1 << totalPrefixLength) - 1;
|
|
const UInt rParamBitMask = (1 << rParam) - 1;
|
|
|
|
m_pcBinIf->encodeBinsEP( prefix, totalPrefixLength ); //prefix
|
|
m_pcBinIf->encodeBinsEP(((suffix << rParam) | (symbol & rParamBitMask)), (suffixLength + rParam)); //separator, suffix, and rParam bits
|
|
}
|
|
else
|
|
{
|
|
length = rParam;
|
|
codeNumber = codeNumber - ( COEF_REMAIN_BIN_REDUCTION << rParam);
|
|
|
|
while (codeNumber >= (1<<length))
|
|
{
|
|
codeNumber -= (1<<(length++));
|
|
}
|
|
|
|
m_pcBinIf->encodeBinsEP((1<<(COEF_REMAIN_BIN_REDUCTION+length+1-rParam))-2,COEF_REMAIN_BIN_REDUCTION+length+1-rParam);
|
|
m_pcBinIf->encodeBinsEP(codeNumber,length);
|
|
}
|
|
}
|
|
|
|
// SBAC RD
|
|
Void TEncSbac::load ( const TEncSbac* pSrc)
|
|
{
|
|
this->xCopyFrom(pSrc);
|
|
}
|
|
|
|
Void TEncSbac::loadIntraDirMode( const TEncSbac* pSrc, const ChannelType chType )
|
|
{
|
|
m_pcBinIf->copyState( pSrc->m_pcBinIf );
|
|
if (isLuma(chType))
|
|
this->m_cCUIntraPredSCModel .copyFrom( &pSrc->m_cCUIntraPredSCModel );
|
|
else
|
|
this->m_cCUChromaPredSCModel .copyFrom( &pSrc->m_cCUChromaPredSCModel );
|
|
}
|
|
|
|
|
|
Void TEncSbac::store( TEncSbac* pDest) const
|
|
{
|
|
pDest->xCopyFrom( this );
|
|
}
|
|
|
|
|
|
Void TEncSbac::xCopyFrom( const TEncSbac* pSrc )
|
|
{
|
|
m_pcBinIf->copyState( pSrc->m_pcBinIf );
|
|
xCopyContextsFrom(pSrc);
|
|
}
|
|
|
|
Void TEncSbac::codeMVPIdx ( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList )
|
|
{
|
|
Int iSymbol = pcCU->getMVPIdx(eRefList, uiAbsPartIdx);
|
|
Int iNum = AMVP_MAX_NUM_CANDS;
|
|
|
|
xWriteUnaryMaxSymbol(iSymbol, m_cMVPIdxSCModel.get(0), 1, iNum-1);
|
|
}
|
|
|
|
Void TEncSbac::codePartSize( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
|
|
{
|
|
PartSize eSize = pcCU->getPartitionSize( uiAbsPartIdx );
|
|
|
|
if ( pcCU->isIntra( uiAbsPartIdx ) )
|
|
{
|
|
if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth )
|
|
{
|
|
m_pcBinIf->encodeBin( eSize == SIZE_2Nx2N? 1 : 0, m_cCUPartSizeSCModel.get( 0, 0, 0 ) );
|
|
}
|
|
return;
|
|
}
|
|
|
|
switch(eSize)
|
|
{
|
|
case SIZE_2Nx2N:
|
|
{
|
|
m_pcBinIf->encodeBin( 1, m_cCUPartSizeSCModel.get( 0, 0, 0) );
|
|
break;
|
|
}
|
|
case SIZE_2NxN:
|
|
case SIZE_2NxnU:
|
|
case SIZE_2NxnD:
|
|
{
|
|
m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 0) );
|
|
m_pcBinIf->encodeBin( 1, m_cCUPartSizeSCModel.get( 0, 0, 1) );
|
|
if ( pcCU->getSlice()->getSPS()->getAMPAcc( uiDepth ) )
|
|
{
|
|
if (eSize == SIZE_2NxN)
|
|
{
|
|
m_pcBinIf->encodeBin(1, m_cCUPartSizeSCModel.get( 0, 0, 3 ));
|
|
}
|
|
else
|
|
{
|
|
m_pcBinIf->encodeBin(0, m_cCUPartSizeSCModel.get( 0, 0, 3 ));
|
|
m_pcBinIf->encodeBinEP((eSize == SIZE_2NxnU? 0: 1));
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case SIZE_Nx2N:
|
|
case SIZE_nLx2N:
|
|
case SIZE_nRx2N:
|
|
{
|
|
m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 0) );
|
|
m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 1) );
|
|
|
|
if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth && !( pcCU->getWidth(uiAbsPartIdx) == 8 && pcCU->getHeight(uiAbsPartIdx) == 8 ) )
|
|
{
|
|
m_pcBinIf->encodeBin( 1, m_cCUPartSizeSCModel.get( 0, 0, 2) );
|
|
}
|
|
|
|
if ( pcCU->getSlice()->getSPS()->getAMPAcc( uiDepth ) )
|
|
{
|
|
if (eSize == SIZE_Nx2N)
|
|
{
|
|
m_pcBinIf->encodeBin(1, m_cCUPartSizeSCModel.get( 0, 0, 3 ));
|
|
}
|
|
else
|
|
{
|
|
m_pcBinIf->encodeBin(0, m_cCUPartSizeSCModel.get( 0, 0, 3 ));
|
|
m_pcBinIf->encodeBinEP((eSize == SIZE_nLx2N? 0: 1));
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case SIZE_NxN:
|
|
{
|
|
if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth && !( pcCU->getWidth(uiAbsPartIdx) == 8 && pcCU->getHeight(uiAbsPartIdx) == 8 ) )
|
|
{
|
|
m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 0) );
|
|
m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 1) );
|
|
m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 2) );
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
assert(0);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/** code prediction mode
|
|
* \param pcCU
|
|
* \param uiAbsPartIdx
|
|
* \returns Void
|
|
*/
|
|
Void TEncSbac::codePredMode( TComDataCU* pcCU, UInt uiAbsPartIdx )
|
|
{
|
|
// get context function is here
|
|
m_pcBinIf->encodeBin( pcCU->isIntra( uiAbsPartIdx ) ? 1 : 0, m_cCUPredModeSCModel.get( 0, 0, 0 ) );
|
|
}
|
|
|
|
Void TEncSbac::codeCUTransquantBypassFlag( TComDataCU* pcCU, UInt uiAbsPartIdx )
|
|
{
|
|
UInt uiSymbol = pcCU->getCUTransquantBypass(uiAbsPartIdx);
|
|
m_pcBinIf->encodeBin( uiSymbol, m_CUTransquantBypassFlagSCModel.get( 0, 0, 0 ) );
|
|
}
|
|
|
|
/** code skip flag
|
|
* \param pcCU
|
|
* \param uiAbsPartIdx
|
|
* \returns Void
|
|
*/
|
|
Void TEncSbac::codeSkipFlag( TComDataCU* pcCU, UInt uiAbsPartIdx )
|
|
{
|
|
// get context function is here
|
|
UInt uiSymbol = pcCU->isSkipped( uiAbsPartIdx ) ? 1 : 0;
|
|
UInt uiCtxSkip = pcCU->getCtxSkipFlag( uiAbsPartIdx ) ;
|
|
m_pcBinIf->encodeBin( uiSymbol, m_cCUSkipFlagSCModel.get( 0, 0, uiCtxSkip ) );
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ );
|
|
DTRACE_CABAC_T( "\tSkipFlag" );
|
|
DTRACE_CABAC_T( "\tuiCtxSkip: ");
|
|
DTRACE_CABAC_V( uiCtxSkip );
|
|
DTRACE_CABAC_T( "\tuiSymbol: ");
|
|
DTRACE_CABAC_V( uiSymbol );
|
|
DTRACE_CABAC_T( "\n");
|
|
}
|
|
|
|
/** code merge flag
|
|
* \param pcCU
|
|
* \param uiAbsPartIdx
|
|
* \returns Void
|
|
*/
|
|
Void TEncSbac::codeMergeFlag( TComDataCU* pcCU, UInt uiAbsPartIdx )
|
|
{
|
|
const UInt uiSymbol = pcCU->getMergeFlag( uiAbsPartIdx ) ? 1 : 0;
|
|
m_pcBinIf->encodeBin( uiSymbol, *m_cCUMergeFlagExtSCModel.get( 0 ) );
|
|
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ );
|
|
DTRACE_CABAC_T( "\tMergeFlag: " );
|
|
DTRACE_CABAC_V( uiSymbol );
|
|
DTRACE_CABAC_T( "\tAddress: " );
|
|
DTRACE_CABAC_V( pcCU->getCtuRsAddr() );
|
|
DTRACE_CABAC_T( "\tuiAbsPartIdx: " );
|
|
DTRACE_CABAC_V( uiAbsPartIdx );
|
|
DTRACE_CABAC_T( "\n" );
|
|
}
|
|
|
|
/** code merge index
|
|
* \param pcCU
|
|
* \param uiAbsPartIdx
|
|
* \returns Void
|
|
*/
|
|
Void TEncSbac::codeMergeIndex( TComDataCU* pcCU, UInt uiAbsPartIdx )
|
|
{
|
|
UInt uiUnaryIdx = pcCU->getMergeIndex( uiAbsPartIdx );
|
|
UInt uiNumCand = pcCU->getSlice()->getMaxNumMergeCand();
|
|
if ( uiNumCand > 1 )
|
|
{
|
|
for( UInt ui = 0; ui < uiNumCand - 1; ++ui )
|
|
{
|
|
const UInt uiSymbol = ui == uiUnaryIdx ? 0 : 1;
|
|
if ( ui==0 )
|
|
{
|
|
m_pcBinIf->encodeBin( uiSymbol, m_cCUMergeIdxExtSCModel.get( 0, 0, 0 ) );
|
|
}
|
|
else
|
|
{
|
|
m_pcBinIf->encodeBinEP( uiSymbol );
|
|
}
|
|
if( uiSymbol == 0 )
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ );
|
|
DTRACE_CABAC_T( "\tparseMergeIndex()" );
|
|
DTRACE_CABAC_T( "\tuiMRGIdx= " );
|
|
DTRACE_CABAC_V( pcCU->getMergeIndex( uiAbsPartIdx ) );
|
|
DTRACE_CABAC_T( "\n" );
|
|
}
|
|
|
|
Void TEncSbac::codeSplitFlag ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth )
|
|
{
|
|
if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth )
|
|
return;
|
|
|
|
UInt uiCtx = pcCU->getCtxSplitFlag( uiAbsPartIdx, uiDepth );
|
|
UInt uiCurrSplitFlag = ( pcCU->getDepth( uiAbsPartIdx ) > uiDepth ) ? 1 : 0;
|
|
|
|
assert( uiCtx < 3 );
|
|
m_pcBinIf->encodeBin( uiCurrSplitFlag, m_cCUSplitFlagSCModel.get( 0, 0, uiCtx ) );
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ )
|
|
DTRACE_CABAC_T( "\tSplitFlag\n" )
|
|
return;
|
|
}
|
|
|
|
Void TEncSbac::codeTransformSubdivFlag( UInt uiSymbol, UInt uiCtx )
|
|
{
|
|
m_pcBinIf->encodeBin( uiSymbol, m_cCUTransSubdivFlagSCModel.get( 0, 0, uiCtx ) );
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ )
|
|
DTRACE_CABAC_T( "\tparseTransformSubdivFlag()" )
|
|
DTRACE_CABAC_T( "\tsymbol=" )
|
|
DTRACE_CABAC_V( uiSymbol )
|
|
DTRACE_CABAC_T( "\tctx=" )
|
|
DTRACE_CABAC_V( uiCtx )
|
|
DTRACE_CABAC_T( "\n" )
|
|
}
|
|
|
|
|
|
Void TEncSbac::codeIntraDirLumaAng( TComDataCU* pcCU, UInt absPartIdx, Bool isMultiple)
|
|
{
|
|
UInt dir[4],j;
|
|
Int preds[4][NUM_MOST_PROBABLE_MODES] = {{-1, -1, -1},{-1, -1, -1},{-1, -1, -1},{-1, -1, -1}};
|
|
Int predNum[4], predIdx[4] ={ -1,-1,-1,-1};
|
|
PartSize mode = pcCU->getPartitionSize( absPartIdx );
|
|
UInt partNum = isMultiple?(mode==SIZE_NxN?4:1):1;
|
|
UInt partOffset = ( pcCU->getPic()->getNumPartitionsInCtu() >> ( pcCU->getDepth(absPartIdx) << 1 ) ) >> 2;
|
|
for (j=0;j<partNum;j++)
|
|
{
|
|
dir[j] = pcCU->getIntraDir( CHANNEL_TYPE_LUMA, absPartIdx+partOffset*j );
|
|
predNum[j] = pcCU->getIntraDirPredictor(absPartIdx+partOffset*j, preds[j], COMPONENT_Y);
|
|
for(UInt i = 0; i < predNum[j]; i++)
|
|
{
|
|
if(dir[j] == preds[j][i])
|
|
{
|
|
predIdx[j] = i;
|
|
}
|
|
}
|
|
m_pcBinIf->encodeBin((predIdx[j] != -1)? 1 : 0, m_cCUIntraPredSCModel.get( 0, 0, 0 ) );
|
|
}
|
|
for (j=0;j<partNum;j++)
|
|
{
|
|
if(predIdx[j] != -1)
|
|
{
|
|
m_pcBinIf->encodeBinEP( predIdx[j] ? 1 : 0 );
|
|
if (predIdx[j])
|
|
{
|
|
m_pcBinIf->encodeBinEP( predIdx[j]-1 );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
assert(predNum[j]>=3); // It is currently always 3!
|
|
if (preds[j][0] > preds[j][1])
|
|
{
|
|
std::swap(preds[j][0], preds[j][1]);
|
|
}
|
|
if (preds[j][0] > preds[j][2])
|
|
{
|
|
std::swap(preds[j][0], preds[j][2]);
|
|
}
|
|
if (preds[j][1] > preds[j][2])
|
|
{
|
|
std::swap(preds[j][1], preds[j][2]);
|
|
}
|
|
for(Int i = (predNum[j] - 1); i >= 0; i--)
|
|
{
|
|
dir[j] = dir[j] > preds[j][i] ? dir[j] - 1 : dir[j];
|
|
}
|
|
m_pcBinIf->encodeBinsEP( dir[j], 5 );
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
Void TEncSbac::codeIntraDirChroma( TComDataCU* pcCU, UInt uiAbsPartIdx )
|
|
{
|
|
UInt uiIntraDirChroma = pcCU->getIntraDir( CHANNEL_TYPE_CHROMA, uiAbsPartIdx );
|
|
|
|
if( uiIntraDirChroma == DM_CHROMA_IDX )
|
|
{
|
|
m_pcBinIf->encodeBin( 0, m_cCUChromaPredSCModel.get( 0, 0, 0 ) );
|
|
}
|
|
else
|
|
{
|
|
m_pcBinIf->encodeBin( 1, m_cCUChromaPredSCModel.get( 0, 0, 0 ) );
|
|
|
|
UInt uiAllowedChromaDir[ NUM_CHROMA_MODE ];
|
|
pcCU->getAllowedChromaDir( uiAbsPartIdx, uiAllowedChromaDir );
|
|
|
|
for( Int i = 0; i < NUM_CHROMA_MODE - 1; i++ )
|
|
{
|
|
if( uiIntraDirChroma == uiAllowedChromaDir[i] )
|
|
{
|
|
uiIntraDirChroma = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
m_pcBinIf->encodeBinsEP( uiIntraDirChroma, 2 );
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
Void TEncSbac::codeInterDir( TComDataCU* pcCU, UInt uiAbsPartIdx )
|
|
{
|
|
const UInt uiInterDir = pcCU->getInterDir( uiAbsPartIdx ) - 1;
|
|
const UInt uiCtx = pcCU->getCtxInterDir( uiAbsPartIdx );
|
|
ContextModel *pCtx = m_cCUInterDirSCModel.get( 0 );
|
|
|
|
if (pcCU->getPartitionSize(uiAbsPartIdx) == SIZE_2Nx2N || pcCU->getHeight(uiAbsPartIdx) != 8 )
|
|
{
|
|
m_pcBinIf->encodeBin( uiInterDir == 2 ? 1 : 0, *( pCtx + uiCtx ) );
|
|
}
|
|
|
|
if (uiInterDir < 2)
|
|
{
|
|
m_pcBinIf->encodeBin( uiInterDir, *( pCtx + 4 ) );
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
Void TEncSbac::codeRefFrmIdx( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList )
|
|
{
|
|
Int iRefFrame = pcCU->getCUMvField( eRefList )->getRefIdx( uiAbsPartIdx );
|
|
ContextModel *pCtx = m_cCURefPicSCModel.get( 0 );
|
|
m_pcBinIf->encodeBin( ( iRefFrame == 0 ? 0 : 1 ), *pCtx );
|
|
|
|
if( iRefFrame > 0 )
|
|
{
|
|
UInt uiRefNum = pcCU->getSlice()->getNumRefIdx( eRefList ) - 2;
|
|
pCtx++;
|
|
iRefFrame--;
|
|
for( UInt ui = 0; ui < uiRefNum; ++ui )
|
|
{
|
|
const UInt uiSymbol = ui == iRefFrame ? 0 : 1;
|
|
if( ui == 0 )
|
|
{
|
|
m_pcBinIf->encodeBin( uiSymbol, *pCtx );
|
|
}
|
|
else
|
|
{
|
|
m_pcBinIf->encodeBinEP( uiSymbol );
|
|
}
|
|
if( uiSymbol == 0 )
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
Void TEncSbac::codeMvd( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList )
|
|
{
|
|
if(pcCU->getSlice()->getMvdL1ZeroFlag() && eRefList == REF_PIC_LIST_1 && pcCU->getInterDir(uiAbsPartIdx)==3)
|
|
{
|
|
return;
|
|
}
|
|
|
|
const TComCUMvField* pcCUMvField = pcCU->getCUMvField( eRefList );
|
|
const Int iHor = pcCUMvField->getMvd( uiAbsPartIdx ).getHor();
|
|
const Int iVer = pcCUMvField->getMvd( uiAbsPartIdx ).getVer();
|
|
ContextModel* pCtx = m_cCUMvdSCModel.get( 0 );
|
|
|
|
m_pcBinIf->encodeBin( iHor != 0 ? 1 : 0, *pCtx );
|
|
m_pcBinIf->encodeBin( iVer != 0 ? 1 : 0, *pCtx );
|
|
|
|
const Bool bHorAbsGr0 = iHor != 0;
|
|
const Bool bVerAbsGr0 = iVer != 0;
|
|
const UInt uiHorAbs = 0 > iHor ? -iHor : iHor;
|
|
const UInt uiVerAbs = 0 > iVer ? -iVer : iVer;
|
|
pCtx++;
|
|
|
|
if( bHorAbsGr0 )
|
|
{
|
|
m_pcBinIf->encodeBin( uiHorAbs > 1 ? 1 : 0, *pCtx );
|
|
}
|
|
|
|
if( bVerAbsGr0 )
|
|
{
|
|
m_pcBinIf->encodeBin( uiVerAbs > 1 ? 1 : 0, *pCtx );
|
|
}
|
|
|
|
if( bHorAbsGr0 )
|
|
{
|
|
if( uiHorAbs > 1 )
|
|
{
|
|
xWriteEpExGolomb( uiHorAbs-2, 1 );
|
|
}
|
|
|
|
m_pcBinIf->encodeBinEP( 0 > iHor ? 1 : 0 );
|
|
}
|
|
|
|
if( bVerAbsGr0 )
|
|
{
|
|
if( uiVerAbs > 1 )
|
|
{
|
|
xWriteEpExGolomb( uiVerAbs-2, 1 );
|
|
}
|
|
|
|
m_pcBinIf->encodeBinEP( 0 > iVer ? 1 : 0 );
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
Void TEncSbac::codeCrossComponentPrediction( TComTU &rTu, ComponentID compID )
|
|
{
|
|
TComDataCU *pcCU = rTu.getCU();
|
|
|
|
if( isLuma(compID) || !pcCU->getSlice()->getPPS()->getUseCrossComponentPrediction() ) return;
|
|
|
|
const UInt uiAbsPartIdx = rTu.GetAbsPartIdxTU();
|
|
|
|
if (!pcCU->isIntra(uiAbsPartIdx) || (pcCU->getIntraDir( CHANNEL_TYPE_CHROMA, uiAbsPartIdx ) == DM_CHROMA_IDX))
|
|
{
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ )
|
|
DTRACE_CABAC_T("\tparseCrossComponentPrediction()")
|
|
DTRACE_CABAC_T( "\tAddr=" )
|
|
DTRACE_CABAC_V( compID )
|
|
DTRACE_CABAC_T( "\tuiAbsPartIdx=" )
|
|
DTRACE_CABAC_V( uiAbsPartIdx )
|
|
|
|
Int alpha = pcCU->getCrossComponentPredictionAlpha( uiAbsPartIdx, compID );
|
|
ContextModel *pCtx = m_cCrossComponentPredictionSCModel.get(0, 0) + ((compID == COMPONENT_Cr) ? (NUM_CROSS_COMPONENT_PREDICTION_CTX >> 1) : 0);
|
|
m_pcBinIf->encodeBin(((alpha != 0) ? 1 : 0), pCtx[0]);
|
|
|
|
if (alpha != 0)
|
|
{
|
|
static const Int log2AbsAlphaMinus1Table[8] = { 0, 1, 1, 2, 2, 2, 3, 3 };
|
|
assert(abs(alpha) <= 8);
|
|
|
|
if (abs(alpha)>1)
|
|
{
|
|
m_pcBinIf->encodeBin(1, pCtx[1]);
|
|
xWriteUnaryMaxSymbol( log2AbsAlphaMinus1Table[abs(alpha) - 1] - 1, (pCtx + 2), 1, 2 );
|
|
}
|
|
else
|
|
{
|
|
m_pcBinIf->encodeBin(0, pCtx[1]);
|
|
}
|
|
m_pcBinIf->encodeBin( ((alpha < 0) ? 1 : 0), pCtx[4] );
|
|
}
|
|
DTRACE_CABAC_T( "\tAlpha=" )
|
|
DTRACE_CABAC_V( pcCU->getCrossComponentPredictionAlpha( uiAbsPartIdx, compID ) )
|
|
DTRACE_CABAC_T( "\n" )
|
|
}
|
|
}
|
|
|
|
Void TEncSbac::codeDeltaQP( TComDataCU* pcCU, UInt uiAbsPartIdx )
|
|
{
|
|
Int iDQp = pcCU->getQP( uiAbsPartIdx ) - pcCU->getRefQP( uiAbsPartIdx );
|
|
|
|
Int qpBdOffsetY = pcCU->getSlice()->getSPS()->getQpBDOffset(CHANNEL_TYPE_LUMA);
|
|
iDQp = (iDQp + 78 + qpBdOffsetY + (qpBdOffsetY/2)) % (52 + qpBdOffsetY) - 26 - (qpBdOffsetY/2);
|
|
|
|
UInt uiAbsDQp = (UInt)((iDQp > 0)? iDQp : (-iDQp));
|
|
UInt TUValue = min((Int)uiAbsDQp, CU_DQP_TU_CMAX);
|
|
xWriteUnaryMaxSymbol( TUValue, &m_cCUDeltaQpSCModel.get( 0, 0, 0 ), 1, CU_DQP_TU_CMAX);
|
|
if( uiAbsDQp >= CU_DQP_TU_CMAX )
|
|
{
|
|
xWriteEpExGolomb( uiAbsDQp - CU_DQP_TU_CMAX, CU_DQP_EG_k );
|
|
}
|
|
|
|
if ( uiAbsDQp > 0)
|
|
{
|
|
UInt uiSign = (iDQp > 0 ? 0 : 1);
|
|
m_pcBinIf->encodeBinEP(uiSign);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/** code chroma qp adjustment, converting from the internal table representation
|
|
* \returns Void
|
|
*/
|
|
Void TEncSbac::codeChromaQpAdjustment( TComDataCU* cu, UInt absPartIdx )
|
|
{
|
|
Int internalIdc = cu->getChromaQpAdj( absPartIdx );
|
|
Int tableSize = cu->getSlice()->getPPS()->getChromaQpAdjTableSize();
|
|
/* internal_idc == 0 => flag = 0
|
|
* internal_idc > 1 => code idc value (if table size warrents) */
|
|
m_pcBinIf->encodeBin( internalIdc > 0, m_ChromaQpAdjFlagSCModel.get( 0, 0, 0 ) );
|
|
|
|
if (internalIdc > 0 && tableSize > 1)
|
|
{
|
|
xWriteUnaryMaxSymbol( internalIdc - 1, &m_ChromaQpAdjIdcSCModel.get( 0, 0, 0 ), 0, tableSize - 1 );
|
|
}
|
|
}
|
|
|
|
Void TEncSbac::codeQtCbf( TComTU &rTu, const ComponentID compID, const Bool lowestLevel )
|
|
{
|
|
TComDataCU* pcCU = rTu.getCU();
|
|
|
|
const UInt absPartIdx = rTu.GetAbsPartIdxTU(compID);
|
|
const UInt TUDepth = rTu.GetTransformDepthRel();
|
|
UInt uiCtx = pcCU->getCtxQtCbf( rTu, toChannelType(compID) );
|
|
const UInt contextSet = toChannelType(compID);
|
|
|
|
const UInt width = rTu.getRect(compID).width;
|
|
const UInt height = rTu.getRect(compID).height;
|
|
const Bool canQuadSplit = (width >= (MIN_TU_SIZE * 2)) && (height >= (MIN_TU_SIZE * 2));
|
|
|
|
// Since the CBF for chroma is coded at the highest level possible, if sub-TUs are
|
|
// to be coded for a 4x8 chroma TU, their CBFs must be coded at the highest 4x8 level
|
|
// (i.e. where luma TUs are 8x8 rather than 4x4)
|
|
// ___ ___
|
|
// | | | <- 4 x (8x8 luma + 4x8 4:2:2 chroma)
|
|
// |___|___| each quadrant has its own chroma CBF
|
|
// | | | _ _ _ _
|
|
// |___|___| |
|
|
// <--16---> V
|
|
// _ _
|
|
// |_|_| <- 4 x 4x4 luma + 1 x 4x8 4:2:2 chroma
|
|
// |_|_| no chroma CBF is coded - instead the parent CBF is inherited
|
|
// <-8-> if sub-TUs are present, their CBFs had to be coded at the parent level
|
|
|
|
const UInt lowestTUDepth = TUDepth + ((!lowestLevel && !canQuadSplit) ? 1 : 0); //unsplittable TUs inherit their parent's CBF
|
|
|
|
if ((width != height) && (lowestLevel || !canQuadSplit)) //if sub-TUs are present
|
|
{
|
|
const UInt subTUDepth = lowestTUDepth + 1; //if this is the lowest level of the TU-tree, the sub-TUs are directly below. Otherwise, this must be the level above the lowest level (as specified above)
|
|
const UInt partIdxesPerSubTU = rTu.GetAbsPartIdxNumParts(compID) >> 1;
|
|
|
|
for (UInt subTU = 0; subTU < 2; subTU++)
|
|
{
|
|
const UInt subTUAbsPartIdx = absPartIdx + (subTU * partIdxesPerSubTU);
|
|
const UInt uiCbf = pcCU->getCbf(subTUAbsPartIdx, compID, subTUDepth);
|
|
|
|
m_pcBinIf->encodeBin(uiCbf, m_cCUQtCbfSCModel.get(0, contextSet, uiCtx));
|
|
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ )
|
|
DTRACE_CABAC_T( "\tparseQtCbf()" )
|
|
DTRACE_CABAC_T( "\tsub-TU=" )
|
|
DTRACE_CABAC_V( subTU )
|
|
DTRACE_CABAC_T( "\tsymbol=" )
|
|
DTRACE_CABAC_V( uiCbf )
|
|
DTRACE_CABAC_T( "\tctx=" )
|
|
DTRACE_CABAC_V( uiCtx )
|
|
DTRACE_CABAC_T( "\tetype=" )
|
|
DTRACE_CABAC_V( compID )
|
|
DTRACE_CABAC_T( "\tuiAbsPartIdx=" )
|
|
DTRACE_CABAC_V( subTUAbsPartIdx )
|
|
DTRACE_CABAC_T( "\n" )
|
|
}
|
|
}
|
|
else
|
|
{
|
|
const UInt uiCbf = pcCU->getCbf( absPartIdx, compID, lowestTUDepth );
|
|
m_pcBinIf->encodeBin( uiCbf , m_cCUQtCbfSCModel.get( 0, contextSet, uiCtx ) );
|
|
|
|
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ )
|
|
DTRACE_CABAC_T( "\tparseQtCbf()" )
|
|
DTRACE_CABAC_T( "\tsymbol=" )
|
|
DTRACE_CABAC_V( uiCbf )
|
|
DTRACE_CABAC_T( "\tctx=" )
|
|
DTRACE_CABAC_V( uiCtx )
|
|
DTRACE_CABAC_T( "\tetype=" )
|
|
DTRACE_CABAC_V( compID )
|
|
DTRACE_CABAC_T( "\tuiAbsPartIdx=" )
|
|
DTRACE_CABAC_V( rTu.GetAbsPartIdxTU(compID) )
|
|
DTRACE_CABAC_T( "\n" )
|
|
}
|
|
}
|
|
|
|
|
|
Void TEncSbac::codeTransformSkipFlags (TComTU &rTu, ComponentID component )
|
|
{
|
|
TComDataCU* pcCU=rTu.getCU();
|
|
const UInt uiAbsPartIdx=rTu.GetAbsPartIdxTU();
|
|
|
|
if (pcCU->getCUTransquantBypass(uiAbsPartIdx))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (!TUCompRectHasAssociatedTransformSkipFlag(rTu.getRect(component), pcCU->getSlice()->getPPS()->getTransformSkipLog2MaxSize()))
|
|
{
|
|
return;
|
|
}
|
|
|
|
UInt useTransformSkip = pcCU->getTransformSkip( uiAbsPartIdx,component);
|
|
m_pcBinIf->encodeBin( useTransformSkip, m_cTransformSkipSCModel.get( 0, toChannelType(component), 0 ) );
|
|
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ )
|
|
DTRACE_CABAC_T("\tparseTransformSkip()");
|
|
DTRACE_CABAC_T( "\tsymbol=" )
|
|
DTRACE_CABAC_V( useTransformSkip )
|
|
DTRACE_CABAC_T( "\tAddr=" )
|
|
DTRACE_CABAC_V( pcCU->getCtuRsAddr() )
|
|
DTRACE_CABAC_T( "\tetype=" )
|
|
DTRACE_CABAC_V( component )
|
|
DTRACE_CABAC_T( "\tuiAbsPartIdx=" )
|
|
DTRACE_CABAC_V( rTu.GetAbsPartIdxTU() )
|
|
DTRACE_CABAC_T( "\n" )
|
|
}
|
|
|
|
|
|
/** Code I_PCM information.
|
|
* \param pcCU pointer to CU
|
|
* \param uiAbsPartIdx CU index
|
|
* \returns Void
|
|
*/
|
|
Void TEncSbac::codeIPCMInfo( TComDataCU* pcCU, UInt uiAbsPartIdx )
|
|
{
|
|
UInt uiIPCM = (pcCU->getIPCMFlag(uiAbsPartIdx) == true)? 1 : 0;
|
|
|
|
Bool writePCMSampleFlag = pcCU->getIPCMFlag(uiAbsPartIdx);
|
|
|
|
m_pcBinIf->encodeBinTrm (uiIPCM);
|
|
|
|
if (writePCMSampleFlag)
|
|
{
|
|
m_pcBinIf->encodePCMAlignBits();
|
|
|
|
const UInt minCoeffSizeY = pcCU->getPic()->getMinCUWidth() * pcCU->getPic()->getMinCUHeight();
|
|
const UInt offsetY = minCoeffSizeY * uiAbsPartIdx;
|
|
for (UInt ch=0; ch < pcCU->getPic()->getNumberValidComponents(); ch++)
|
|
{
|
|
const ComponentID compID = ComponentID(ch);
|
|
const UInt offset = offsetY >> (pcCU->getPic()->getComponentScaleX(compID) + pcCU->getPic()->getComponentScaleY(compID));
|
|
Pel * pPCMSample = pcCU->getPCMSample(compID) + offset;
|
|
const UInt width = pcCU->getWidth (uiAbsPartIdx) >> pcCU->getPic()->getComponentScaleX(compID);
|
|
const UInt height = pcCU->getHeight(uiAbsPartIdx) >> pcCU->getPic()->getComponentScaleY(compID);
|
|
const UInt sampleBits = pcCU->getSlice()->getSPS()->getPCMBitDepth(toChannelType(compID));
|
|
for (UInt y=0; y<height; y++)
|
|
{
|
|
for (UInt x=0; x<width; x++)
|
|
{
|
|
UInt sample = pPCMSample[x];
|
|
m_pcBinIf->xWritePCMCode(sample, sampleBits);
|
|
}
|
|
pPCMSample += width;
|
|
}
|
|
}
|
|
|
|
m_pcBinIf->resetBac();
|
|
}
|
|
}
|
|
|
|
Void TEncSbac::codeQtRootCbf( TComDataCU* pcCU, UInt uiAbsPartIdx )
|
|
{
|
|
UInt uiCbf = pcCU->getQtRootCbf( uiAbsPartIdx );
|
|
UInt uiCtx = 0;
|
|
m_pcBinIf->encodeBin( uiCbf , m_cCUQtRootCbfSCModel.get( 0, 0, uiCtx ) );
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ )
|
|
DTRACE_CABAC_T( "\tparseQtRootCbf()" )
|
|
DTRACE_CABAC_T( "\tsymbol=" )
|
|
DTRACE_CABAC_V( uiCbf )
|
|
DTRACE_CABAC_T( "\tctx=" )
|
|
DTRACE_CABAC_V( uiCtx )
|
|
DTRACE_CABAC_T( "\tuiAbsPartIdx=" )
|
|
DTRACE_CABAC_V( uiAbsPartIdx )
|
|
DTRACE_CABAC_T( "\n" )
|
|
}
|
|
|
|
Void TEncSbac::codeQtCbfZero( TComTU & rTu, const ChannelType chType )
|
|
{
|
|
// this function is only used to estimate the bits when cbf is 0
|
|
// and will never be called when writing the bistream. do not need to write log
|
|
UInt uiCbf = 0;
|
|
UInt uiCtx = rTu.getCU()->getCtxQtCbf( rTu, chType );
|
|
|
|
m_pcBinIf->encodeBin( uiCbf , m_cCUQtCbfSCModel.get( 0, chType, uiCtx ) );
|
|
}
|
|
|
|
Void TEncSbac::codeQtRootCbfZero( TComDataCU* pcCU )
|
|
{
|
|
// this function is only used to estimate the bits when cbf is 0
|
|
// and will never be called when writing the bistream. do not need to write log
|
|
UInt uiCbf = 0;
|
|
UInt uiCtx = 0;
|
|
m_pcBinIf->encodeBin( uiCbf , m_cCUQtRootCbfSCModel.get( 0, 0, uiCtx ) );
|
|
}
|
|
|
|
/** Encode (X,Y) position of the last significant coefficient
|
|
* \param uiPosX X component of last coefficient
|
|
* \param uiPosY Y component of last coefficient
|
|
* \param width Block width
|
|
* \param height Block height
|
|
* \param eTType plane type / luminance or chrominance
|
|
* \param uiScanIdx scan type (zig-zag, hor, ver)
|
|
* This method encodes the X and Y component within a block of the last significant coefficient.
|
|
*/
|
|
Void TEncSbac::codeLastSignificantXY( UInt uiPosX, UInt uiPosY, Int width, Int height, ComponentID component, UInt uiScanIdx )
|
|
{
|
|
// swap
|
|
if( uiScanIdx == SCAN_VER )
|
|
{
|
|
swap( uiPosX, uiPosY );
|
|
swap( width, height );
|
|
}
|
|
|
|
UInt uiCtxLast;
|
|
UInt uiGroupIdxX = g_uiGroupIdx[ uiPosX ];
|
|
UInt uiGroupIdxY = g_uiGroupIdx[ uiPosY ];
|
|
|
|
ContextModel *pCtxX = m_cCuCtxLastX.get( 0, toChannelType(component) );
|
|
ContextModel *pCtxY = m_cCuCtxLastY.get( 0, toChannelType(component) );
|
|
|
|
Int blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY;
|
|
getLastSignificantContextParameters(component, width, height, blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY);
|
|
|
|
//------------------
|
|
|
|
// posX
|
|
|
|
for( uiCtxLast = 0; uiCtxLast < uiGroupIdxX; uiCtxLast++ )
|
|
{
|
|
m_pcBinIf->encodeBin( 1, *( pCtxX + blkSizeOffsetX + (uiCtxLast >>shiftX) ) );
|
|
}
|
|
if( uiGroupIdxX < g_uiGroupIdx[ width - 1 ])
|
|
{
|
|
m_pcBinIf->encodeBin( 0, *( pCtxX + blkSizeOffsetX + (uiCtxLast >>shiftX) ) );
|
|
}
|
|
|
|
// posY
|
|
|
|
for( uiCtxLast = 0; uiCtxLast < uiGroupIdxY; uiCtxLast++ )
|
|
{
|
|
m_pcBinIf->encodeBin( 1, *( pCtxY + blkSizeOffsetY + (uiCtxLast >>shiftY) ) );
|
|
}
|
|
if( uiGroupIdxY < g_uiGroupIdx[ height - 1 ])
|
|
{
|
|
m_pcBinIf->encodeBin( 0, *( pCtxY + blkSizeOffsetY + (uiCtxLast >>shiftY) ) );
|
|
}
|
|
|
|
// EP-coded part
|
|
|
|
if ( uiGroupIdxX > 3 )
|
|
{
|
|
UInt uiCount = ( uiGroupIdxX - 2 ) >> 1;
|
|
uiPosX = uiPosX - g_uiMinInGroup[ uiGroupIdxX ];
|
|
for (Int i = uiCount - 1 ; i >= 0; i-- )
|
|
{
|
|
m_pcBinIf->encodeBinEP( ( uiPosX >> i ) & 1 );
|
|
}
|
|
}
|
|
if ( uiGroupIdxY > 3 )
|
|
{
|
|
UInt uiCount = ( uiGroupIdxY - 2 ) >> 1;
|
|
uiPosY = uiPosY - g_uiMinInGroup[ uiGroupIdxY ];
|
|
for ( Int i = uiCount - 1 ; i >= 0; i-- )
|
|
{
|
|
m_pcBinIf->encodeBinEP( ( uiPosY >> i ) & 1 );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
Void TEncSbac::codeCoeffNxN( TComTU &rTu, TCoeff* pcCoef, const ComponentID compID )
|
|
{
|
|
TComDataCU* pcCU=rTu.getCU();
|
|
const UInt uiAbsPartIdx=rTu.GetAbsPartIdxTU(compID);
|
|
const TComRectangle &tuRect=rTu.getRect(compID);
|
|
const UInt uiWidth=tuRect.width;
|
|
const UInt uiHeight=tuRect.height;
|
|
|
|
DTRACE_CABAC_VL( g_nSymbolCounter++ )
|
|
DTRACE_CABAC_T( "\tparseCoeffNxN()\teType=" )
|
|
DTRACE_CABAC_V( compID )
|
|
DTRACE_CABAC_T( "\twidth=" )
|
|
DTRACE_CABAC_V( uiWidth )
|
|
DTRACE_CABAC_T( "\theight=" )
|
|
DTRACE_CABAC_V( uiHeight )
|
|
DTRACE_CABAC_T( "\tdepth=" )
|
|
// DTRACE_CABAC_V( rTu.GetTransformDepthTotalAdj(compID) )
|
|
DTRACE_CABAC_V( rTu.GetTransformDepthTotal() )
|
|
DTRACE_CABAC_T( "\tabspartidx=" )
|
|
DTRACE_CABAC_V( uiAbsPartIdx )
|
|
DTRACE_CABAC_T( "\ttoCU-X=" )
|
|
DTRACE_CABAC_V( pcCU->getCUPelX() )
|
|
DTRACE_CABAC_T( "\ttoCU-Y=" )
|
|
DTRACE_CABAC_V( pcCU->getCUPelY() )
|
|
DTRACE_CABAC_T( "\tCU-addr=" )
|
|
DTRACE_CABAC_V( pcCU->getCtuRsAddr() )
|
|
DTRACE_CABAC_T( "\tinCU-X=" )
|
|
// DTRACE_CABAC_V( g_auiRasterToPelX[ g_auiZscanToRaster[uiAbsPartIdx] ] )
|
|
DTRACE_CABAC_V( g_auiRasterToPelX[ g_auiZscanToRaster[rTu.GetAbsPartIdxTU(compID)] ] )
|
|
DTRACE_CABAC_T( "\tinCU-Y=" )
|
|
// DTRACE_CABAC_V( g_auiRasterToPelY[ g_auiZscanToRaster[uiAbsPartIdx] ] )
|
|
DTRACE_CABAC_V( g_auiRasterToPelY[ g_auiZscanToRaster[rTu.GetAbsPartIdxTU(compID)] ] )
|
|
DTRACE_CABAC_T( "\tpredmode=" )
|
|
DTRACE_CABAC_V( pcCU->getPredictionMode( uiAbsPartIdx ) )
|
|
DTRACE_CABAC_T( "\n" )
|
|
|
|
//--------------------------------------------------------------------------------------------------
|
|
|
|
if( uiWidth > m_pcSlice->getSPS()->getMaxTrSize() )
|
|
{
|
|
std::cerr << "ERROR: codeCoeffNxN was passed a TU with dimensions larger than the maximum allowed size" << std::endl;
|
|
assert(false);
|
|
exit(1);
|
|
}
|
|
|
|
// compute number of significant coefficients
|
|
UInt uiNumSig = TEncEntropy::countNonZeroCoeffs(pcCoef, uiWidth * uiHeight);
|
|
|
|
if ( uiNumSig == 0 )
|
|
{
|
|
std::cerr << "ERROR: codeCoeffNxN called for empty TU!" << std::endl;
|
|
assert(false);
|
|
exit(1);
|
|
}
|
|
|
|
//--------------------------------------------------------------------------------------------------
|
|
|
|
//set parameters
|
|
|
|
const ChannelType chType = toChannelType(compID);
|
|
const UInt uiLog2BlockWidth = g_aucConvertToBit[ uiWidth ] + 2;
|
|
const UInt uiLog2BlockHeight = g_aucConvertToBit[ uiHeight ] + 2;
|
|
|
|
const ChannelType channelType = toChannelType(compID);
|
|
const Bool extendedPrecision = pcCU->getSlice()->getSPS()->getUseExtendedPrecision();
|
|
|
|
const Bool alignCABACBeforeBypass = pcCU->getSlice()->getSPS()->getAlignCABACBeforeBypass();
|
|
|
|
Bool beValid;
|
|
|
|
{
|
|
Int uiIntraMode = -1;
|
|
const Bool bIsLuma = isLuma(compID);
|
|
Int isIntra = pcCU->isIntra(uiAbsPartIdx) ? 1 : 0;
|
|
if ( isIntra )
|
|
{
|
|
uiIntraMode = pcCU->getIntraDir( toChannelType(compID), uiAbsPartIdx );
|
|
|
|
uiIntraMode = (uiIntraMode==DM_CHROMA_IDX && !bIsLuma) ? pcCU->getIntraDir(CHANNEL_TYPE_LUMA, getChromasCorrespondingPULumaIdx(uiAbsPartIdx, rTu.GetChromaFormat())) : uiIntraMode;
|
|
uiIntraMode = ((rTu.GetChromaFormat() == CHROMA_422) && !bIsLuma) ? g_chroma422IntraAngleMappingTable[uiIntraMode] : uiIntraMode;
|
|
}
|
|
|
|
Int transformSkip = pcCU->getTransformSkip( uiAbsPartIdx,compID) ? 1 : 0;
|
|
Bool rdpcm_lossy = ( transformSkip && isIntra && ( (uiIntraMode == HOR_IDX) || (uiIntraMode == VER_IDX) ) ) && pcCU->isRDPCMEnabled(uiAbsPartIdx);
|
|
|
|
if ( (pcCU->getCUTransquantBypass(uiAbsPartIdx)) || rdpcm_lossy )
|
|
{
|
|
beValid = false;
|
|
if ( (!pcCU->isIntra(uiAbsPartIdx)) && pcCU->isRDPCMEnabled(uiAbsPartIdx))
|
|
codeExplicitRdpcmMode( rTu, compID);
|
|
}
|
|
else
|
|
{
|
|
beValid = pcCU->getSlice()->getPPS()->getSignHideFlag() > 0;
|
|
}
|
|
}
|
|
|
|
//--------------------------------------------------------------------------------------------------
|
|
|
|
if(pcCU->getSlice()->getPPS()->getUseTransformSkip())
|
|
{
|
|
codeTransformSkipFlags(rTu, compID);
|
|
if(pcCU->getTransformSkip(uiAbsPartIdx, compID) && !pcCU->isIntra(uiAbsPartIdx) && pcCU->isRDPCMEnabled(uiAbsPartIdx))
|
|
{
|
|
// This TU has coefficients and is transform skipped. Check whether is inter coded and if yes encode the explicit RDPCM mode
|
|
codeExplicitRdpcmMode( rTu, compID);
|
|
|
|
if(pcCU->getExplicitRdpcmMode(compID, uiAbsPartIdx) != RDPCM_OFF)
|
|
{
|
|
// Sign data hiding is avoided for horizontal and vertical explicit RDPCM modes
|
|
beValid = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
//--------------------------------------------------------------------------------------------------
|
|
|
|
const Bool bUseGolombRiceParameterAdaptation = pcCU->getSlice()->getSPS()->getUseGolombRiceParameterAdaptation();
|
|
UInt ¤tGolombRiceStatistic = m_golombRiceAdaptationStatistics[rTu.getGolombRiceStatisticsIndex(compID)];
|
|
|
|
//select scans
|
|
TUEntropyCodingParameters codingParameters;
|
|
getTUEntropyCodingParameters(codingParameters, rTu, compID);
|
|
|
|
//----- encode significance map -----
|
|
|
|
// Find position of last coefficient
|
|
Int scanPosLast = -1;
|
|
Int posLast;
|
|
|
|
|
|
UInt uiSigCoeffGroupFlag[ MLS_GRP_NUM ];
|
|
|
|
memset( uiSigCoeffGroupFlag, 0, sizeof(UInt) * MLS_GRP_NUM );
|
|
do
|
|
{
|
|
posLast = codingParameters.scan[ ++scanPosLast ];
|
|
|
|
if( pcCoef[ posLast ] != 0 )
|
|
{
|
|
// get L1 sig map
|
|
UInt uiPosY = posLast >> uiLog2BlockWidth;
|
|
UInt uiPosX = posLast - ( uiPosY << uiLog2BlockWidth );
|
|
|
|
UInt uiBlkIdx = (codingParameters.widthInGroups * (uiPosY >> MLS_CG_LOG2_HEIGHT)) + (uiPosX >> MLS_CG_LOG2_WIDTH);
|
|
uiSigCoeffGroupFlag[ uiBlkIdx ] = 1;
|
|
|
|
uiNumSig--;
|
|
}
|
|
}
|
|
while ( uiNumSig > 0 );
|
|
|
|
// Code position of last coefficient
|
|
Int posLastY = posLast >> uiLog2BlockWidth;
|
|
Int posLastX = posLast - ( posLastY << uiLog2BlockWidth );
|
|
codeLastSignificantXY(posLastX, posLastY, uiWidth, uiHeight, compID, codingParameters.scanType);
|
|
|
|
//===== code significance flag =====
|
|
ContextModel * const baseCoeffGroupCtx = m_cCUSigCoeffGroupSCModel.get( 0, chType );
|
|
ContextModel * const baseCtx = m_cCUSigSCModel.get( 0, 0 ) + getSignificanceMapContextOffset(compID);
|
|
|
|
const Int iLastScanSet = scanPosLast >> MLS_CG_SIZE;
|
|
|
|
UInt c1 = 1;
|
|
UInt uiGoRiceParam = 0;
|
|
Int iScanPosSig = scanPosLast;
|
|
|
|
for( Int iSubSet = iLastScanSet; iSubSet >= 0; iSubSet-- )
|
|
{
|
|
Int numNonZero = 0;
|
|
Int iSubPos = iSubSet << MLS_CG_SIZE;
|
|
uiGoRiceParam = currentGolombRiceStatistic / RExt__GOLOMB_RICE_INCREMENT_DIVISOR;
|
|
Bool updateGolombRiceStatistics = bUseGolombRiceParameterAdaptation; //leave the statistics at 0 when not using the adaptation system
|
|
UInt coeffSigns = 0;
|
|
|
|
Int absCoeff[1 << MLS_CG_SIZE];
|
|
|
|
Int lastNZPosInCG = -1;
|
|
Int firstNZPosInCG = 1 << MLS_CG_SIZE;
|
|
|
|
Bool escapeDataPresentInGroup = false;
|
|
|
|
if( iScanPosSig == scanPosLast )
|
|
{
|
|
absCoeff[ 0 ] = Int(abs( pcCoef[ posLast ] ));
|
|
coeffSigns = ( pcCoef[ posLast ] < 0 );
|
|
numNonZero = 1;
|
|
lastNZPosInCG = iScanPosSig;
|
|
firstNZPosInCG = iScanPosSig;
|
|
iScanPosSig--;
|
|
}
|
|
|
|
// encode significant_coeffgroup_flag
|
|
Int iCGBlkPos = codingParameters.scanCG[ iSubSet ];
|
|
Int iCGPosY = iCGBlkPos / codingParameters.widthInGroups;
|
|
Int iCGPosX = iCGBlkPos - (iCGPosY * codingParameters.widthInGroups);
|
|
|
|
if( iSubSet == iLastScanSet || iSubSet == 0)
|
|
{
|
|
uiSigCoeffGroupFlag[ iCGBlkPos ] = 1;
|
|
}
|
|
else
|
|
{
|
|
UInt uiSigCoeffGroup = (uiSigCoeffGroupFlag[ iCGBlkPos ] != 0);
|
|
UInt uiCtxSig = TComTrQuant::getSigCoeffGroupCtxInc( uiSigCoeffGroupFlag, iCGPosX, iCGPosY, codingParameters.widthInGroups, codingParameters.heightInGroups );
|
|
m_pcBinIf->encodeBin( uiSigCoeffGroup, baseCoeffGroupCtx[ uiCtxSig ] );
|
|
}
|
|
|
|
// encode significant_coeff_flag
|
|
if( uiSigCoeffGroupFlag[ iCGBlkPos ] )
|
|
{
|
|
const Int patternSigCtx = TComTrQuant::calcPatternSigCtx(uiSigCoeffGroupFlag, iCGPosX, iCGPosY, codingParameters.widthInGroups, codingParameters.heightInGroups);
|
|
|
|
UInt uiBlkPos, uiSig, uiCtxSig;
|
|
for( ; iScanPosSig >= iSubPos; iScanPosSig-- )
|
|
{
|
|
uiBlkPos = codingParameters.scan[ iScanPosSig ];
|
|
uiSig = (pcCoef[ uiBlkPos ] != 0);
|
|
if( iScanPosSig > iSubPos || iSubSet == 0 || numNonZero )
|
|
{
|
|
uiCtxSig = TComTrQuant::getSigCtxInc( patternSigCtx, codingParameters, iScanPosSig, uiLog2BlockWidth, uiLog2BlockHeight, chType );
|
|
m_pcBinIf->encodeBin( uiSig, baseCtx[ uiCtxSig ] );
|
|
}
|
|
if( uiSig )
|
|
{
|
|
absCoeff[ numNonZero ] = Int(abs( pcCoef[ uiBlkPos ] ));
|
|
coeffSigns = 2 * coeffSigns + ( pcCoef[ uiBlkPos ] < 0 );
|
|
numNonZero++;
|
|
if( lastNZPosInCG == -1 )
|
|
{
|
|
lastNZPosInCG = iScanPosSig;
|
|
}
|
|
firstNZPosInCG = iScanPosSig;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
iScanPosSig = iSubPos - 1;
|
|
}
|
|
|
|
if( numNonZero > 0 )
|
|
{
|
|
Bool signHidden = ( lastNZPosInCG - firstNZPosInCG >= SBH_THRESHOLD );
|
|
|
|
const UInt uiCtxSet = getContextSetIndex(compID, iSubSet, (c1 == 0));
|
|
c1 = 1;
|
|
|
|
ContextModel *baseCtxMod = m_cCUOneSCModel.get( 0, 0 ) + (NUM_ONE_FLAG_CTX_PER_SET * uiCtxSet);
|
|
|
|
Int numC1Flag = min(numNonZero, C1FLAG_NUMBER);
|
|
Int firstC2FlagIdx = -1;
|
|
for( Int idx = 0; idx < numC1Flag; idx++ )
|
|
{
|
|
UInt uiSymbol = absCoeff[ idx ] > 1;
|
|
m_pcBinIf->encodeBin( uiSymbol, baseCtxMod[c1] );
|
|
if( uiSymbol )
|
|
{
|
|
c1 = 0;
|
|
|
|
if (firstC2FlagIdx == -1)
|
|
{
|
|
firstC2FlagIdx = idx;
|
|
}
|
|
else //if a greater-than-one has been encountered already this group
|
|
{
|
|
escapeDataPresentInGroup = true;
|
|
}
|
|
}
|
|
else if( (c1 < 3) && (c1 > 0) )
|
|
{
|
|
c1++;
|
|
}
|
|
}
|
|
|
|
if (c1 == 0)
|
|
{
|
|
baseCtxMod = m_cCUAbsSCModel.get( 0, 0 ) + (NUM_ABS_FLAG_CTX_PER_SET * uiCtxSet);
|
|
if ( firstC2FlagIdx != -1)
|
|
{
|
|
UInt symbol = absCoeff[ firstC2FlagIdx ] > 2;
|
|
m_pcBinIf->encodeBin( symbol, baseCtxMod[0] );
|
|
if (symbol != 0)
|
|
{
|
|
escapeDataPresentInGroup = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
escapeDataPresentInGroup = escapeDataPresentInGroup || (numNonZero > C1FLAG_NUMBER);
|
|
|
|
if (escapeDataPresentInGroup && alignCABACBeforeBypass)
|
|
{
|
|
m_pcBinIf->align();
|
|
}
|
|
|
|
if( beValid && signHidden )
|
|
{
|
|
m_pcBinIf->encodeBinsEP( (coeffSigns >> 1), numNonZero-1 );
|
|
}
|
|
else
|
|
{
|
|
m_pcBinIf->encodeBinsEP( coeffSigns, numNonZero );
|
|
}
|
|
|
|
Int iFirstCoeff2 = 1;
|
|
if (escapeDataPresentInGroup)
|
|
{
|
|
for ( Int idx = 0; idx < numNonZero; idx++ )
|
|
{
|
|
UInt baseLevel = (idx < C1FLAG_NUMBER)? (2 + iFirstCoeff2 ) : 1;
|
|
|
|
if( absCoeff[ idx ] >= baseLevel)
|
|
{
|
|
const UInt escapeCodeValue = absCoeff[idx] - baseLevel;
|
|
|
|
xWriteCoefRemainExGolomb( escapeCodeValue, uiGoRiceParam, extendedPrecision, channelType );
|
|
|
|
if (absCoeff[idx] > (3 << uiGoRiceParam))
|
|
{
|
|
uiGoRiceParam = bUseGolombRiceParameterAdaptation ? (uiGoRiceParam + 1) : (std::min<UInt>((uiGoRiceParam + 1), 4));
|
|
}
|
|
|
|
if (updateGolombRiceStatistics)
|
|
{
|
|
const UInt initialGolombRiceParameter = currentGolombRiceStatistic / RExt__GOLOMB_RICE_INCREMENT_DIVISOR;
|
|
|
|
if (escapeCodeValue >= (3 << initialGolombRiceParameter))
|
|
{
|
|
currentGolombRiceStatistic++;
|
|
}
|
|
else if (((escapeCodeValue * 2) < (1 << initialGolombRiceParameter)) && (currentGolombRiceStatistic > 0))
|
|
{
|
|
currentGolombRiceStatistic--;
|
|
}
|
|
|
|
updateGolombRiceStatistics = false;
|
|
}
|
|
}
|
|
|
|
if(absCoeff[ idx ] >= 2)
|
|
{
|
|
iFirstCoeff2 = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#if ENVIRONMENT_VARIABLE_DEBUG_AND_TEST
|
|
printSBACCoeffData(posLastX, posLastY, uiWidth, uiHeight, compID, uiAbsPartIdx, codingParameters.scanType, pcCoef, g_bFinalEncode);
|
|
#endif
|
|
|
|
return;
|
|
}
|
|
|
|
/** code SAO offset sign
|
|
* \param code sign value
|
|
*/
|
|
Void TEncSbac::codeSAOSign( UInt code )
|
|
{
|
|
m_pcBinIf->encodeBinEP( code );
|
|
}
|
|
|
|
Void TEncSbac::codeSaoMaxUvlc ( UInt code, UInt maxSymbol )
|
|
{
|
|
if (maxSymbol == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
Int i;
|
|
Bool bCodeLast = ( maxSymbol > code );
|
|
|
|
if ( code == 0 )
|
|
{
|
|
m_pcBinIf->encodeBinEP( 0 );
|
|
}
|
|
else
|
|
{
|
|
m_pcBinIf->encodeBinEP( 1 );
|
|
for ( i=0; i<code-1; i++ )
|
|
{
|
|
m_pcBinIf->encodeBinEP( 1 );
|
|
}
|
|
if( bCodeLast )
|
|
{
|
|
m_pcBinIf->encodeBinEP( 0 );
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Code SAO EO class or BO band position
|
|
* \param uiLength
|
|
* \param uiCode
|
|
*/
|
|
Void TEncSbac::codeSaoUflc ( UInt uiLength, UInt uiCode )
|
|
{
|
|
m_pcBinIf->encodeBinsEP ( uiCode, uiLength );
|
|
}
|
|
|
|
/** Code SAO merge flags
|
|
* \param uiCode
|
|
* \param uiCompIdx
|
|
*/
|
|
Void TEncSbac::codeSaoMerge ( UInt uiCode )
|
|
{
|
|
m_pcBinIf->encodeBin(((uiCode == 0) ? 0 : 1), m_cSaoMergeSCModel.get( 0, 0, 0 ));
|
|
}
|
|
|
|
/** Code SAO type index
|
|
* \param uiCode
|
|
*/
|
|
Void TEncSbac::codeSaoTypeIdx ( UInt uiCode)
|
|
{
|
|
if (uiCode == 0)
|
|
{
|
|
m_pcBinIf->encodeBin( 0, m_cSaoTypeIdxSCModel.get( 0, 0, 0 ) );
|
|
}
|
|
else
|
|
{
|
|
m_pcBinIf->encodeBin( 1, m_cSaoTypeIdxSCModel.get( 0, 0, 0 ) );
|
|
m_pcBinIf->encodeBinEP( uiCode == 1 ? 0 : 1 );
|
|
}
|
|
}
|
|
|
|
Void TEncSbac::codeSAOOffsetParam(ComponentID compIdx, SAOOffset& ctbParam, Bool sliceEnabled)
|
|
{
|
|
UInt uiSymbol;
|
|
if(!sliceEnabled)
|
|
{
|
|
assert(ctbParam.modeIdc == SAO_MODE_OFF);
|
|
return;
|
|
}
|
|
const Bool bIsFirstCompOfChType = (getFirstComponentOfChannel(toChannelType(compIdx)) == compIdx);
|
|
|
|
//type
|
|
if(bIsFirstCompOfChType)
|
|
{
|
|
//sao_type_idx_luma or sao_type_idx_chroma
|
|
if(ctbParam.modeIdc == SAO_MODE_OFF)
|
|
{
|
|
uiSymbol =0;
|
|
}
|
|
else if(ctbParam.typeIdc == SAO_TYPE_BO) //BO
|
|
{
|
|
uiSymbol = 1;
|
|
}
|
|
else
|
|
{
|
|
assert(ctbParam.typeIdc < SAO_TYPE_START_BO); //EO
|
|
uiSymbol = 2;
|
|
}
|
|
codeSaoTypeIdx(uiSymbol);
|
|
}
|
|
|
|
if(ctbParam.modeIdc == SAO_MODE_NEW)
|
|
{
|
|
Int numClasses = (ctbParam.typeIdc == SAO_TYPE_BO)?4:NUM_SAO_EO_CLASSES;
|
|
Int offset[4];
|
|
Int k=0;
|
|
for(Int i=0; i< numClasses; i++)
|
|
{
|
|
if(ctbParam.typeIdc != SAO_TYPE_BO && i == SAO_CLASS_EO_PLAIN)
|
|
{
|
|
continue;
|
|
}
|
|
Int classIdx = (ctbParam.typeIdc == SAO_TYPE_BO)?( (ctbParam.typeAuxInfo+i)% NUM_SAO_BO_CLASSES ):i;
|
|
offset[k] = ctbParam.offset[classIdx];
|
|
k++;
|
|
}
|
|
|
|
for(Int i=0; i< 4; i++)
|
|
{
|
|
codeSaoMaxUvlc((offset[i]<0)?(-offset[i]):(offset[i]), g_saoMaxOffsetQVal[compIdx] ); //sao_offset_abs
|
|
}
|
|
|
|
|
|
if(ctbParam.typeIdc == SAO_TYPE_BO)
|
|
{
|
|
for(Int i=0; i< 4; i++)
|
|
{
|
|
if(offset[i] != 0)
|
|
{
|
|
codeSAOSign((offset[i]< 0)?1:0);
|
|
}
|
|
}
|
|
|
|
codeSaoUflc(NUM_SAO_BO_CLASSES_LOG2, ctbParam.typeAuxInfo ); //sao_band_position
|
|
}
|
|
else //EO
|
|
{
|
|
if(bIsFirstCompOfChType)
|
|
{
|
|
assert(ctbParam.typeIdc - SAO_TYPE_START_EO >=0);
|
|
codeSaoUflc(NUM_SAO_EO_TYPES_LOG2, ctbParam.typeIdc - SAO_TYPE_START_EO ); //sao_eo_class_luma or sao_eo_class_chroma
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
|
|
Void TEncSbac::codeSAOBlkParam(SAOBlkParam& saoBlkParam
|
|
, Bool* sliceEnabled
|
|
, Bool leftMergeAvail
|
|
, Bool aboveMergeAvail
|
|
, Bool onlyEstMergeInfo // = false
|
|
)
|
|
{
|
|
|
|
Bool isLeftMerge = false;
|
|
Bool isAboveMerge= false;
|
|
|
|
if(leftMergeAvail)
|
|
{
|
|
isLeftMerge = ((saoBlkParam[COMPONENT_Y].modeIdc == SAO_MODE_MERGE) && (saoBlkParam[COMPONENT_Y].typeIdc == SAO_MERGE_LEFT));
|
|
codeSaoMerge( isLeftMerge?1:0 ); //sao_merge_left_flag
|
|
}
|
|
|
|
if( aboveMergeAvail && !isLeftMerge)
|
|
{
|
|
isAboveMerge = ((saoBlkParam[COMPONENT_Y].modeIdc == SAO_MODE_MERGE) && (saoBlkParam[COMPONENT_Y].typeIdc == SAO_MERGE_ABOVE));
|
|
codeSaoMerge( isAboveMerge?1:0 ); //sao_merge_left_flag
|
|
}
|
|
|
|
if(onlyEstMergeInfo)
|
|
{
|
|
return; //only for RDO
|
|
}
|
|
|
|
if(!isLeftMerge && !isAboveMerge) //not merge mode
|
|
{
|
|
for(Int compIdx=0; compIdx < MAX_NUM_COMPONENT; compIdx++)
|
|
{
|
|
codeSAOOffsetParam(ComponentID(compIdx), saoBlkParam[compIdx], sliceEnabled[compIdx]);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*!
|
|
****************************************************************************
|
|
* \brief
|
|
* estimate bit cost for CBP, significant map and significant coefficients
|
|
****************************************************************************
|
|
*/
|
|
Void TEncSbac::estBit( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType )
|
|
{
|
|
estCBFBit( pcEstBitsSbac );
|
|
|
|
estSignificantCoeffGroupMapBit( pcEstBitsSbac, chType );
|
|
|
|
// encode significance map
|
|
estSignificantMapBit( pcEstBitsSbac, width, height, chType );
|
|
|
|
// encode last significant position
|
|
estLastSignificantPositionBit( pcEstBitsSbac, width, height, chType );
|
|
|
|
// encode significant coefficients
|
|
estSignificantCoefficientsBit( pcEstBitsSbac, chType );
|
|
|
|
memcpy(pcEstBitsSbac->golombRiceAdaptationStatistics, m_golombRiceAdaptationStatistics, (sizeof(UInt) * RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS));
|
|
}
|
|
|
|
/*!
|
|
****************************************************************************
|
|
* \brief
|
|
* estimate bit cost for each CBP bit
|
|
****************************************************************************
|
|
*/
|
|
Void TEncSbac::estCBFBit( estBitsSbacStruct* pcEstBitsSbac )
|
|
{
|
|
ContextModel *pCtx = m_cCUQtCbfSCModel.get( 0 );
|
|
|
|
for( UInt uiCtxInc = 0; uiCtxInc < (NUM_QT_CBF_CTX_SETS * NUM_QT_CBF_CTX_PER_SET); uiCtxInc++ )
|
|
{
|
|
pcEstBitsSbac->blockCbpBits[ uiCtxInc ][ 0 ] = pCtx[ uiCtxInc ].getEntropyBits( 0 );
|
|
pcEstBitsSbac->blockCbpBits[ uiCtxInc ][ 1 ] = pCtx[ uiCtxInc ].getEntropyBits( 1 );
|
|
}
|
|
|
|
pCtx = m_cCUQtRootCbfSCModel.get( 0 );
|
|
|
|
for( UInt uiCtxInc = 0; uiCtxInc < 4; uiCtxInc++ )
|
|
{
|
|
pcEstBitsSbac->blockRootCbpBits[ uiCtxInc ][ 0 ] = pCtx[ uiCtxInc ].getEntropyBits( 0 );
|
|
pcEstBitsSbac->blockRootCbpBits[ uiCtxInc ][ 1 ] = pCtx[ uiCtxInc ].getEntropyBits( 1 );
|
|
}
|
|
}
|
|
|
|
|
|
/*!
|
|
****************************************************************************
|
|
* \brief
|
|
* estimate SAMBAC bit cost for significant coefficient group map
|
|
****************************************************************************
|
|
*/
|
|
Void TEncSbac::estSignificantCoeffGroupMapBit( estBitsSbacStruct* pcEstBitsSbac, ChannelType chType )
|
|
{
|
|
Int firstCtx = 0, numCtx = NUM_SIG_CG_FLAG_CTX;
|
|
|
|
for ( Int ctxIdx = firstCtx; ctxIdx < firstCtx + numCtx; ctxIdx++ )
|
|
{
|
|
for( UInt uiBin = 0; uiBin < 2; uiBin++ )
|
|
{
|
|
pcEstBitsSbac->significantCoeffGroupBits[ ctxIdx ][ uiBin ] = m_cCUSigCoeffGroupSCModel.get( 0, chType, ctxIdx ).getEntropyBits( uiBin );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*!
|
|
****************************************************************************
|
|
* \brief
|
|
* estimate SAMBAC bit cost for significant coefficient map
|
|
****************************************************************************
|
|
*/
|
|
Void TEncSbac::estSignificantMapBit( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType )
|
|
{
|
|
//--------------------------------------------------------------------------------------------------
|
|
|
|
//set up the number of channels and context variables
|
|
|
|
const UInt firstComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb));
|
|
const UInt lastComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb));
|
|
|
|
//----------------------------------------------------------
|
|
|
|
Int firstCtx = MAX_INT;
|
|
Int numCtx = MAX_INT;
|
|
|
|
if ((width == 4) && (height == 4))
|
|
{
|
|
firstCtx = significanceMapContextSetStart[chType][CONTEXT_TYPE_4x4];
|
|
numCtx = significanceMapContextSetSize [chType][CONTEXT_TYPE_4x4];
|
|
}
|
|
else if ((width == 8) && (height == 8))
|
|
{
|
|
firstCtx = significanceMapContextSetStart[chType][CONTEXT_TYPE_8x8];
|
|
numCtx = significanceMapContextSetSize [chType][CONTEXT_TYPE_8x8];
|
|
}
|
|
else
|
|
{
|
|
firstCtx = significanceMapContextSetStart[chType][CONTEXT_TYPE_NxN];
|
|
numCtx = significanceMapContextSetSize [chType][CONTEXT_TYPE_NxN];
|
|
}
|
|
|
|
//--------------------------------------------------------------------------------------------------
|
|
|
|
//fill the data for the significace map
|
|
|
|
for (UInt component = firstComponent; component <= lastComponent; component++)
|
|
{
|
|
const UInt contextOffset = getSignificanceMapContextOffset(ComponentID(component));
|
|
|
|
if (firstCtx > 0)
|
|
{
|
|
for( UInt bin = 0; bin < 2; bin++ ) //always get the DC
|
|
{
|
|
pcEstBitsSbac->significantBits[ contextOffset ][ bin ] = m_cCUSigSCModel.get( 0, 0, contextOffset ).getEntropyBits( bin );
|
|
}
|
|
}
|
|
|
|
// This could be made optional, but would require this function to have knowledge of whether the
|
|
// TU is transform-skipped or transquant-bypassed and whether the SPS flag is set
|
|
for( UInt bin = 0; bin < 2; bin++ )
|
|
{
|
|
const Int ctxIdx = significanceMapContextSetStart[chType][CONTEXT_TYPE_SINGLE];
|
|
pcEstBitsSbac->significantBits[ contextOffset + ctxIdx ][ bin ] = m_cCUSigSCModel.get( 0, 0, (contextOffset + ctxIdx) ).getEntropyBits( bin );
|
|
}
|
|
|
|
for ( Int ctxIdx = firstCtx; ctxIdx < firstCtx + numCtx; ctxIdx++ )
|
|
{
|
|
for( UInt uiBin = 0; uiBin < 2; uiBin++ )
|
|
{
|
|
pcEstBitsSbac->significantBits[ contextOffset + ctxIdx ][ uiBin ] = m_cCUSigSCModel.get( 0, 0, (contextOffset + ctxIdx) ).getEntropyBits( uiBin );
|
|
}
|
|
}
|
|
}
|
|
|
|
//--------------------------------------------------------------------------------------------------
|
|
}
|
|
|
|
|
|
/*!
|
|
****************************************************************************
|
|
* \brief
|
|
* estimate bit cost of significant coefficient
|
|
****************************************************************************
|
|
*/
|
|
|
|
Void TEncSbac::estLastSignificantPositionBit( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType )
|
|
{
|
|
//--------------------------------------------------------------------------------------------------.
|
|
|
|
//set up the number of channels
|
|
|
|
const UInt firstComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb));
|
|
const UInt lastComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb));
|
|
|
|
//--------------------------------------------------------------------------------------------------
|
|
|
|
//fill the data for the last-significant-coefficient position
|
|
|
|
for (UInt componentIndex = firstComponent; componentIndex <= lastComponent; componentIndex++)
|
|
{
|
|
const ComponentID component = ComponentID(componentIndex);
|
|
|
|
Int iBitsX = 0, iBitsY = 0;
|
|
|
|
Int blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY;
|
|
getLastSignificantContextParameters(ComponentID(component), width, height, blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY);
|
|
|
|
Int ctx;
|
|
|
|
const ChannelType channelType = toChannelType(ComponentID(component));
|
|
|
|
ContextModel *const pCtxX = m_cCuCtxLastX.get( 0, channelType );
|
|
ContextModel *const pCtxY = m_cCuCtxLastY.get( 0, channelType );
|
|
Int *const lastXBitsArray = pcEstBitsSbac->lastXBits[channelType];
|
|
Int *const lastYBitsArray = pcEstBitsSbac->lastYBits[channelType];
|
|
|
|
//------------------------------------------------
|
|
|
|
//X-coordinate
|
|
|
|
for (ctx = 0; ctx < g_uiGroupIdx[ width - 1 ]; ctx++)
|
|
{
|
|
Int ctxOffset = blkSizeOffsetX + (ctx >>shiftX);
|
|
lastXBitsArray[ ctx ] = iBitsX + pCtxX[ ctxOffset ].getEntropyBits( 0 );
|
|
iBitsX += pCtxX[ ctxOffset ].getEntropyBits( 1 );
|
|
}
|
|
|
|
lastXBitsArray[ctx] = iBitsX;
|
|
|
|
//------------------------------------------------
|
|
|
|
//Y-coordinate
|
|
|
|
for (ctx = 0; ctx < g_uiGroupIdx[ height - 1 ]; ctx++)
|
|
{
|
|
Int ctxOffset = blkSizeOffsetY + (ctx >>shiftY);
|
|
lastYBitsArray[ ctx ] = iBitsY + pCtxY[ ctxOffset ].getEntropyBits( 0 );
|
|
iBitsY += pCtxY[ ctxOffset ].getEntropyBits( 1 );
|
|
}
|
|
|
|
lastYBitsArray[ctx] = iBitsY;
|
|
|
|
} //end of component loop
|
|
|
|
//--------------------------------------------------------------------------------------------------
|
|
}
|
|
|
|
|
|
/*!
|
|
****************************************************************************
|
|
* \brief
|
|
* estimate bit cost of significant coefficient
|
|
****************************************************************************
|
|
*/
|
|
Void TEncSbac::estSignificantCoefficientsBit( estBitsSbacStruct* pcEstBitsSbac, ChannelType chType )
|
|
{
|
|
ContextModel *ctxOne = m_cCUOneSCModel.get(0, 0);
|
|
ContextModel *ctxAbs = m_cCUAbsSCModel.get(0, 0);
|
|
|
|
const UInt oneStartIndex = ((isLuma(chType)) ? (0) : (NUM_ONE_FLAG_CTX_LUMA));
|
|
const UInt oneStopIndex = ((isLuma(chType)) ? (NUM_ONE_FLAG_CTX_LUMA) : (NUM_ONE_FLAG_CTX));
|
|
const UInt absStartIndex = ((isLuma(chType)) ? (0) : (NUM_ABS_FLAG_CTX_LUMA));
|
|
const UInt absStopIndex = ((isLuma(chType)) ? (NUM_ABS_FLAG_CTX_LUMA) : (NUM_ABS_FLAG_CTX));
|
|
|
|
for (Int ctxIdx = oneStartIndex; ctxIdx < oneStopIndex; ctxIdx++)
|
|
{
|
|
pcEstBitsSbac->m_greaterOneBits[ ctxIdx ][ 0 ] = ctxOne[ ctxIdx ].getEntropyBits( 0 );
|
|
pcEstBitsSbac->m_greaterOneBits[ ctxIdx ][ 1 ] = ctxOne[ ctxIdx ].getEntropyBits( 1 );
|
|
}
|
|
|
|
for (Int ctxIdx = absStartIndex; ctxIdx < absStopIndex; ctxIdx++)
|
|
{
|
|
pcEstBitsSbac->m_levelAbsBits[ ctxIdx ][ 0 ] = ctxAbs[ ctxIdx ].getEntropyBits( 0 );
|
|
pcEstBitsSbac->m_levelAbsBits[ ctxIdx ][ 1 ] = ctxAbs[ ctxIdx ].getEntropyBits( 1 );
|
|
}
|
|
}
|
|
|
|
/**
|
|
- Initialize our context information from the nominated source.
|
|
.
|
|
\param pSrc From where to copy context information.
|
|
*/
|
|
Void TEncSbac::xCopyContextsFrom( const TEncSbac* pSrc )
|
|
{
|
|
memcpy(m_contextModels, pSrc->m_contextModels, m_numContextModels*sizeof(m_contextModels[0]));
|
|
memcpy(m_golombRiceAdaptationStatistics, pSrc->m_golombRiceAdaptationStatistics, (sizeof(UInt) * RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS));
|
|
}
|
|
|
|
Void TEncSbac::loadContexts ( const TEncSbac* pSrc)
|
|
{
|
|
xCopyContextsFrom(pSrc);
|
|
}
|
|
|
|
/** Performs CABAC encoding of the explicit RDPCM mode
|
|
* \param rTu current TU data structure
|
|
* \param compID component identifier
|
|
*/
|
|
Void TEncSbac::codeExplicitRdpcmMode( TComTU &rTu, const ComponentID compID )
|
|
{
|
|
TComDataCU *cu = rTu.getCU();
|
|
const TComRectangle &rect = rTu.getRect(compID);
|
|
const UInt absPartIdx = rTu.GetAbsPartIdxTU(compID);
|
|
const UInt tuHeight = g_aucConvertToBit[rect.height];
|
|
const UInt tuWidth = g_aucConvertToBit[rect.width];
|
|
|
|
assert(tuHeight == tuWidth);
|
|
assert(tuHeight < 4);
|
|
|
|
UInt explicitRdpcmMode = cu->getExplicitRdpcmMode(compID, absPartIdx);
|
|
|
|
if( explicitRdpcmMode == RDPCM_OFF )
|
|
{
|
|
m_pcBinIf->encodeBin (0, m_explicitRdpcmFlagSCModel.get (0, toChannelType(compID), 0));
|
|
}
|
|
else if( explicitRdpcmMode == RDPCM_HOR || explicitRdpcmMode == RDPCM_VER )
|
|
{
|
|
m_pcBinIf->encodeBin (1, m_explicitRdpcmFlagSCModel.get (0, toChannelType(compID), 0));
|
|
if(explicitRdpcmMode == RDPCM_HOR)
|
|
{
|
|
m_pcBinIf->encodeBin ( 0, m_explicitRdpcmDirSCModel.get(0, toChannelType(compID), 0));
|
|
}
|
|
else
|
|
{
|
|
m_pcBinIf->encodeBin ( 1, m_explicitRdpcmDirSCModel.get(0, toChannelType(compID), 0));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
assert(0);
|
|
}
|
|
}
|
|
|
|
//! \}
|