[313] | 1 | /* The copyright in this software is being made available under the BSD |
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| 2 | * License, included below. This software may be subject to other third party |
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| 3 | * and contributor rights, including patent rights, and no such rights are |
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[1029] | 4 | * granted under this license. |
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[313] | 5 | * |
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[1259] | 6 | * Copyright (c) 2010-2015, ITU/ISO/IEC |
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[313] | 7 | * All rights reserved. |
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| 8 | * |
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| 9 | * Redistribution and use in source and binary forms, with or without |
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| 10 | * modification, are permitted provided that the following conditions are met: |
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| 11 | * |
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| 12 | * * Redistributions of source code must retain the above copyright notice, |
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| 13 | * this list of conditions and the following disclaimer. |
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| 14 | * * Redistributions in binary form must reproduce the above copyright notice, |
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| 15 | * this list of conditions and the following disclaimer in the documentation |
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| 16 | * and/or other materials provided with the distribution. |
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| 17 | * * Neither the name of the ITU/ISO/IEC nor the names of its contributors may |
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| 18 | * be used to endorse or promote products derived from this software without |
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| 19 | * specific prior written permission. |
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| 20 | * |
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS |
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| 25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
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| 31 | * THE POSSIBILITY OF SUCH DAMAGE. |
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| 32 | */ |
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| 33 | |
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| 34 | /** \file TEncSbac.cpp |
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| 35 | \brief SBAC encoder class |
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| 36 | */ |
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| 37 | |
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| 38 | #include "TEncTop.h" |
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| 39 | #include "TEncSbac.h" |
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[1029] | 40 | #include "TLibCommon/TComTU.h" |
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[313] | 41 | |
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| 42 | #include <map> |
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| 43 | #include <algorithm> |
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| 44 | |
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[1029] | 45 | #if ENVIRONMENT_VARIABLE_DEBUG_AND_TEST |
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| 46 | #include "../TLibCommon/Debug.h" |
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| 47 | #endif |
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| 48 | |
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| 49 | |
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[313] | 50 | //! \ingroup TLibEncoder |
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| 51 | //! \{ |
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| 52 | |
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| 53 | // ==================================================================================================================== |
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| 54 | // Constructor / destructor / create / destroy |
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| 55 | // ==================================================================================================================== |
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| 56 | |
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| 57 | TEncSbac::TEncSbac() |
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| 58 | // new structure here |
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[1029] | 59 | : m_pcBitIf ( NULL ) |
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| 60 | , m_pcSlice ( NULL ) |
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| 61 | , m_pcBinIf ( NULL ) |
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| 62 | , m_numContextModels ( 0 ) |
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| 63 | , m_cCUSplitFlagSCModel ( 1, 1, NUM_SPLIT_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 64 | , m_cCUSkipFlagSCModel ( 1, 1, NUM_SKIP_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 65 | , m_cCUMergeFlagExtSCModel ( 1, 1, NUM_MERGE_FLAG_EXT_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 66 | , m_cCUMergeIdxExtSCModel ( 1, 1, NUM_MERGE_IDX_EXT_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 67 | , m_cCUPartSizeSCModel ( 1, 1, NUM_PART_SIZE_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 68 | , m_cCUPredModeSCModel ( 1, 1, NUM_PRED_MODE_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 69 | , m_cCUIntraPredSCModel ( 1, 1, NUM_ADI_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 70 | , m_cCUChromaPredSCModel ( 1, 1, NUM_CHROMA_PRED_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 71 | , m_cCUDeltaQpSCModel ( 1, 1, NUM_DELTA_QP_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 72 | , m_cCUInterDirSCModel ( 1, 1, NUM_INTER_DIR_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 73 | , m_cCURefPicSCModel ( 1, 1, NUM_REF_NO_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 74 | , m_cCUMvdSCModel ( 1, 1, NUM_MV_RES_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 75 | , m_cCUQtCbfSCModel ( 1, NUM_QT_CBF_CTX_SETS, NUM_QT_CBF_CTX_PER_SET , m_contextModels + m_numContextModels, m_numContextModels) |
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| 76 | , m_cCUTransSubdivFlagSCModel ( 1, 1, NUM_TRANS_SUBDIV_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 77 | , m_cCUQtRootCbfSCModel ( 1, 1, NUM_QT_ROOT_CBF_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 78 | , m_cCUSigCoeffGroupSCModel ( 1, 2, NUM_SIG_CG_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 79 | , m_cCUSigSCModel ( 1, 1, NUM_SIG_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 80 | , m_cCuCtxLastX ( 1, NUM_CTX_LAST_FLAG_SETS, NUM_CTX_LAST_FLAG_XY , m_contextModels + m_numContextModels, m_numContextModels) |
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| 81 | , m_cCuCtxLastY ( 1, NUM_CTX_LAST_FLAG_SETS, NUM_CTX_LAST_FLAG_XY , m_contextModels + m_numContextModels, m_numContextModels) |
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| 82 | , m_cCUOneSCModel ( 1, 1, NUM_ONE_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 83 | , m_cCUAbsSCModel ( 1, 1, NUM_ABS_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 84 | , m_cMVPIdxSCModel ( 1, 1, NUM_MVP_IDX_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 85 | , m_cSaoMergeSCModel ( 1, 1, NUM_SAO_MERGE_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 86 | , m_cSaoTypeIdxSCModel ( 1, 1, NUM_SAO_TYPE_IDX_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 87 | , m_cTransformSkipSCModel ( 1, MAX_NUM_CHANNEL_TYPE, NUM_TRANSFORMSKIP_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 88 | , m_CUTransquantBypassFlagSCModel ( 1, 1, NUM_CU_TRANSQUANT_BYPASS_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 89 | , m_explicitRdpcmFlagSCModel ( 1, MAX_NUM_CHANNEL_TYPE, NUM_EXPLICIT_RDPCM_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 90 | , m_explicitRdpcmDirSCModel ( 1, MAX_NUM_CHANNEL_TYPE, NUM_EXPLICIT_RDPCM_DIR_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 91 | , m_cCrossComponentPredictionSCModel ( 1, 1, NUM_CROSS_COMPONENT_PREDICTION_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 92 | , m_ChromaQpAdjFlagSCModel ( 1, 1, NUM_CHROMA_QP_ADJ_FLAG_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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| 93 | , m_ChromaQpAdjIdcSCModel ( 1, 1, NUM_CHROMA_QP_ADJ_IDC_CTX , m_contextModels + m_numContextModels, m_numContextModels) |
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[313] | 94 | { |
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| 95 | assert( m_numContextModels <= MAX_NUM_CTX_MOD ); |
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| 96 | } |
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| 97 | |
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| 98 | TEncSbac::~TEncSbac() |
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| 99 | { |
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| 100 | } |
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| 101 | |
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| 102 | // ==================================================================================================================== |
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| 103 | // Public member functions |
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| 104 | // ==================================================================================================================== |
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| 105 | |
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| 106 | Void TEncSbac::resetEntropy () |
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| 107 | { |
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| 108 | Int iQp = m_pcSlice->getSliceQp(); |
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| 109 | SliceType eSliceType = m_pcSlice->getSliceType(); |
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[1029] | 110 | |
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[1246] | 111 | SliceType encCABACTableIdx = m_pcSlice->getEncCABACTableIdx(); |
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[313] | 112 | if (!m_pcSlice->isIntra() && (encCABACTableIdx==B_SLICE || encCABACTableIdx==P_SLICE) && m_pcSlice->getPPS()->getCabacInitPresentFlag()) |
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| 113 | { |
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[1235] | 114 | eSliceType = encCABACTableIdx; |
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[313] | 115 | } |
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| 116 | |
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[1029] | 117 | m_cCUSplitFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SPLIT_FLAG ); |
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| 118 | m_cCUSkipFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SKIP_FLAG ); |
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| 119 | m_cCUMergeFlagExtSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MERGE_FLAG_EXT); |
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| 120 | m_cCUMergeIdxExtSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MERGE_IDX_EXT); |
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| 121 | m_cCUPartSizeSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_PART_SIZE ); |
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| 122 | m_cCUPredModeSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_PRED_MODE ); |
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| 123 | m_cCUIntraPredSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_INTRA_PRED_MODE ); |
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| 124 | m_cCUChromaPredSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CHROMA_PRED_MODE ); |
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| 125 | m_cCUInterDirSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_INTER_DIR ); |
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| 126 | m_cCUMvdSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MVD ); |
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| 127 | m_cCURefPicSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_REF_PIC ); |
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| 128 | m_cCUDeltaQpSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_DQP ); |
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| 129 | m_cCUQtCbfSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_QT_CBF ); |
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| 130 | m_cCUQtRootCbfSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_QT_ROOT_CBF ); |
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| 131 | m_cCUSigCoeffGroupSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SIG_CG_FLAG ); |
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| 132 | m_cCUSigSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SIG_FLAG ); |
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| 133 | m_cCuCtxLastX.initBuffer ( eSliceType, iQp, (UChar*)INIT_LAST ); |
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| 134 | m_cCuCtxLastY.initBuffer ( eSliceType, iQp, (UChar*)INIT_LAST ); |
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| 135 | m_cCUOneSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_ONE_FLAG ); |
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| 136 | m_cCUAbsSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_ABS_FLAG ); |
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| 137 | m_cMVPIdxSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_MVP_IDX ); |
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| 138 | m_cCUTransSubdivFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_TRANS_SUBDIV_FLAG ); |
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| 139 | m_cSaoMergeSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SAO_MERGE_FLAG ); |
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| 140 | m_cSaoTypeIdxSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_SAO_TYPE_IDX ); |
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| 141 | m_cTransformSkipSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_TRANSFORMSKIP_FLAG ); |
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| 142 | m_CUTransquantBypassFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CU_TRANSQUANT_BYPASS_FLAG ); |
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| 143 | m_explicitRdpcmFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_EXPLICIT_RDPCM_FLAG); |
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| 144 | m_explicitRdpcmDirSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_EXPLICIT_RDPCM_DIR); |
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| 145 | m_cCrossComponentPredictionSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CROSS_COMPONENT_PREDICTION ); |
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| 146 | m_ChromaQpAdjFlagSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CHROMA_QP_ADJ_FLAG ); |
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| 147 | m_ChromaQpAdjIdcSCModel.initBuffer ( eSliceType, iQp, (UChar*)INIT_CHROMA_QP_ADJ_IDC ); |
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| 148 | |
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| 149 | for (UInt statisticIndex = 0; statisticIndex < RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS ; statisticIndex++) |
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| 150 | { |
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| 151 | m_golombRiceAdaptationStatistics[statisticIndex] = 0; |
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| 152 | } |
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| 153 | |
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[313] | 154 | m_pcBinIf->start(); |
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[1029] | 155 | |
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[313] | 156 | return; |
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| 157 | } |
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| 158 | |
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[1029] | 159 | /** The function does the following: |
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| 160 | * 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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[313] | 161 | * 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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| 162 | */ |
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[1235] | 163 | SliceType TEncSbac::determineCabacInitIdx() |
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[313] | 164 | { |
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| 165 | Int qp = m_pcSlice->getSliceQp(); |
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| 166 | |
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| 167 | if (!m_pcSlice->isIntra()) |
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| 168 | { |
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| 169 | SliceType aSliceTypeChoices[] = {B_SLICE, P_SLICE}; |
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| 170 | |
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| 171 | UInt bestCost = MAX_UINT; |
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| 172 | SliceType bestSliceType = aSliceTypeChoices[0]; |
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| 173 | for (UInt idx=0; idx<2; idx++) |
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| 174 | { |
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| 175 | UInt curCost = 0; |
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| 176 | SliceType curSliceType = aSliceTypeChoices[idx]; |
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| 177 | |
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[1029] | 178 | curCost = m_cCUSplitFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SPLIT_FLAG ); |
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| 179 | curCost += m_cCUSkipFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SKIP_FLAG ); |
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| 180 | curCost += m_cCUMergeFlagExtSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MERGE_FLAG_EXT); |
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| 181 | curCost += m_cCUMergeIdxExtSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MERGE_IDX_EXT); |
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| 182 | curCost += m_cCUPartSizeSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_PART_SIZE ); |
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| 183 | curCost += m_cCUPredModeSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_PRED_MODE ); |
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| 184 | curCost += m_cCUIntraPredSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_INTRA_PRED_MODE ); |
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| 185 | curCost += m_cCUChromaPredSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CHROMA_PRED_MODE ); |
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| 186 | curCost += m_cCUInterDirSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_INTER_DIR ); |
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| 187 | curCost += m_cCUMvdSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MVD ); |
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| 188 | curCost += m_cCURefPicSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_REF_PIC ); |
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| 189 | curCost += m_cCUDeltaQpSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_DQP ); |
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| 190 | curCost += m_cCUQtCbfSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_QT_CBF ); |
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| 191 | curCost += m_cCUQtRootCbfSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_QT_ROOT_CBF ); |
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| 192 | curCost += m_cCUSigCoeffGroupSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SIG_CG_FLAG ); |
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| 193 | curCost += m_cCUSigSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SIG_FLAG ); |
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| 194 | curCost += m_cCuCtxLastX.calcCost ( curSliceType, qp, (UChar*)INIT_LAST ); |
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| 195 | curCost += m_cCuCtxLastY.calcCost ( curSliceType, qp, (UChar*)INIT_LAST ); |
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| 196 | curCost += m_cCUOneSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_ONE_FLAG ); |
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| 197 | curCost += m_cCUAbsSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_ABS_FLAG ); |
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| 198 | curCost += m_cMVPIdxSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_MVP_IDX ); |
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| 199 | curCost += m_cCUTransSubdivFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_TRANS_SUBDIV_FLAG ); |
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| 200 | curCost += m_cSaoMergeSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SAO_MERGE_FLAG ); |
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| 201 | curCost += m_cSaoTypeIdxSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_SAO_TYPE_IDX ); |
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| 202 | curCost += m_cTransformSkipSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_TRANSFORMSKIP_FLAG ); |
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| 203 | curCost += m_CUTransquantBypassFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CU_TRANSQUANT_BYPASS_FLAG ); |
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| 204 | curCost += m_explicitRdpcmFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_EXPLICIT_RDPCM_FLAG); |
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| 205 | curCost += m_explicitRdpcmDirSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_EXPLICIT_RDPCM_DIR); |
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| 206 | curCost += m_cCrossComponentPredictionSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CROSS_COMPONENT_PREDICTION ); |
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| 207 | curCost += m_ChromaQpAdjFlagSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CHROMA_QP_ADJ_FLAG ); |
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| 208 | curCost += m_ChromaQpAdjIdcSCModel.calcCost ( curSliceType, qp, (UChar*)INIT_CHROMA_QP_ADJ_IDC ); |
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| 209 | |
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[313] | 210 | if (curCost < bestCost) |
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| 211 | { |
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| 212 | bestSliceType = curSliceType; |
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| 213 | bestCost = curCost; |
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| 214 | } |
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| 215 | } |
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[1235] | 216 | return bestSliceType; |
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[313] | 217 | } |
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| 218 | else |
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| 219 | { |
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[1235] | 220 | return I_SLICE; |
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[1029] | 221 | } |
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[313] | 222 | } |
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| 223 | |
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[1235] | 224 | Void TEncSbac::codeVPS( const TComVPS* pcVPS ) |
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[313] | 225 | { |
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| 226 | assert (0); |
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| 227 | return; |
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| 228 | } |
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| 229 | |
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[1235] | 230 | Void TEncSbac::codeSPS( const TComSPS* pcSPS ) |
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[313] | 231 | { |
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| 232 | assert (0); |
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| 233 | return; |
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| 234 | } |
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| 235 | |
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[1212] | 236 | #if CGS_3D_ASYMLUT |
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[1235] | 237 | Void TEncSbac::codePPS( const TComPPS* pcPPS, TEnc3DAsymLUT * pc3DAsymLUT ) |
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| 238 | #else |
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| 239 | Void TEncSbac::codePPS( const TComPPS* pcPPS ) |
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[713] | 240 | #endif |
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[313] | 241 | { |
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| 242 | assert (0); |
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| 243 | return; |
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| 244 | } |
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| 245 | |
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| 246 | Void TEncSbac::codeSliceHeader( TComSlice* pcSlice ) |
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| 247 | { |
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| 248 | assert (0); |
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| 249 | return; |
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| 250 | } |
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| 251 | |
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| 252 | Void TEncSbac::codeTilesWPPEntryPoint( TComSlice* pSlice ) |
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| 253 | { |
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| 254 | assert (0); |
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| 255 | return; |
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| 256 | } |
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| 257 | |
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| 258 | Void TEncSbac::codeTerminatingBit( UInt uilsLast ) |
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| 259 | { |
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| 260 | m_pcBinIf->encodeBinTrm( uilsLast ); |
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| 261 | } |
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| 262 | |
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| 263 | Void TEncSbac::codeSliceFinish() |
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| 264 | { |
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| 265 | m_pcBinIf->finish(); |
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| 266 | } |
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| 267 | |
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| 268 | Void TEncSbac::xWriteUnarySymbol( UInt uiSymbol, ContextModel* pcSCModel, Int iOffset ) |
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| 269 | { |
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| 270 | m_pcBinIf->encodeBin( uiSymbol ? 1 : 0, pcSCModel[0] ); |
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[1029] | 271 | |
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[313] | 272 | if( 0 == uiSymbol) |
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| 273 | { |
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| 274 | return; |
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| 275 | } |
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[1029] | 276 | |
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[313] | 277 | while( uiSymbol-- ) |
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| 278 | { |
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| 279 | m_pcBinIf->encodeBin( uiSymbol ? 1 : 0, pcSCModel[ iOffset ] ); |
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| 280 | } |
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[1029] | 281 | |
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[313] | 282 | return; |
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| 283 | } |
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| 284 | |
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| 285 | Void TEncSbac::xWriteUnaryMaxSymbol( UInt uiSymbol, ContextModel* pcSCModel, Int iOffset, UInt uiMaxSymbol ) |
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| 286 | { |
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| 287 | if (uiMaxSymbol == 0) |
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| 288 | { |
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| 289 | return; |
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| 290 | } |
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[1029] | 291 | |
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[313] | 292 | m_pcBinIf->encodeBin( uiSymbol ? 1 : 0, pcSCModel[ 0 ] ); |
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[1029] | 293 | |
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[313] | 294 | if ( uiSymbol == 0 ) |
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| 295 | { |
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| 296 | return; |
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| 297 | } |
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[1029] | 298 | |
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[313] | 299 | Bool bCodeLast = ( uiMaxSymbol > uiSymbol ); |
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[1029] | 300 | |
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[313] | 301 | while( --uiSymbol ) |
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| 302 | { |
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| 303 | m_pcBinIf->encodeBin( 1, pcSCModel[ iOffset ] ); |
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| 304 | } |
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| 305 | if( bCodeLast ) |
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| 306 | { |
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| 307 | m_pcBinIf->encodeBin( 0, pcSCModel[ iOffset ] ); |
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| 308 | } |
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[1029] | 309 | |
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[313] | 310 | return; |
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| 311 | } |
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| 312 | |
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| 313 | Void TEncSbac::xWriteEpExGolomb( UInt uiSymbol, UInt uiCount ) |
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| 314 | { |
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| 315 | UInt bins = 0; |
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| 316 | Int numBins = 0; |
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[1029] | 317 | |
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[313] | 318 | while( uiSymbol >= (UInt)(1<<uiCount) ) |
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| 319 | { |
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| 320 | bins = 2 * bins + 1; |
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| 321 | numBins++; |
---|
| 322 | uiSymbol -= 1 << uiCount; |
---|
| 323 | uiCount ++; |
---|
| 324 | } |
---|
| 325 | bins = 2 * bins + 0; |
---|
| 326 | numBins++; |
---|
[1029] | 327 | |
---|
[313] | 328 | bins = (bins << uiCount) | uiSymbol; |
---|
| 329 | numBins += uiCount; |
---|
[1029] | 330 | |
---|
[313] | 331 | assert( numBins <= 32 ); |
---|
| 332 | m_pcBinIf->encodeBinsEP( bins, numBins ); |
---|
| 333 | } |
---|
| 334 | |
---|
[1029] | 335 | |
---|
[313] | 336 | /** Coding of coeff_abs_level_minus3 |
---|
[1260] | 337 | * \param symbol value of coeff_abs_level_minus3 |
---|
| 338 | * \param rParam reference to Rice parameter |
---|
| 339 | * \param useLimitedPrefixLength |
---|
| 340 | * \param channelType plane type (luma/chroma) |
---|
[313] | 341 | */ |
---|
[1029] | 342 | Void TEncSbac::xWriteCoefRemainExGolomb ( UInt symbol, UInt &rParam, const Bool useLimitedPrefixLength, const ChannelType channelType ) |
---|
[313] | 343 | { |
---|
| 344 | Int codeNumber = (Int)symbol; |
---|
| 345 | UInt length; |
---|
[1029] | 346 | |
---|
[313] | 347 | if (codeNumber < (COEF_REMAIN_BIN_REDUCTION << rParam)) |
---|
| 348 | { |
---|
| 349 | length = codeNumber>>rParam; |
---|
| 350 | m_pcBinIf->encodeBinsEP( (1<<(length+1))-2 , length+1); |
---|
| 351 | m_pcBinIf->encodeBinsEP((codeNumber%(1<<rParam)),rParam); |
---|
| 352 | } |
---|
[1029] | 353 | else if (useLimitedPrefixLength) |
---|
| 354 | { |
---|
| 355 | const UInt maximumPrefixLength = (32 - (COEF_REMAIN_BIN_REDUCTION + g_maxTrDynamicRange[channelType])); |
---|
| 356 | |
---|
| 357 | UInt prefixLength = 0; |
---|
| 358 | UInt suffixLength = MAX_UINT; |
---|
| 359 | UInt codeValue = (symbol >> rParam) - COEF_REMAIN_BIN_REDUCTION; |
---|
| 360 | |
---|
| 361 | if (codeValue >= ((1 << maximumPrefixLength) - 1)) |
---|
| 362 | { |
---|
| 363 | prefixLength = maximumPrefixLength; |
---|
| 364 | suffixLength = g_maxTrDynamicRange[channelType] - rParam; |
---|
| 365 | } |
---|
| 366 | else |
---|
| 367 | { |
---|
| 368 | while (codeValue > ((2 << prefixLength) - 2)) |
---|
| 369 | { |
---|
| 370 | prefixLength++; |
---|
| 371 | } |
---|
| 372 | |
---|
| 373 | suffixLength = prefixLength + 1; //+1 for the separator bit |
---|
| 374 | } |
---|
| 375 | |
---|
| 376 | const UInt suffix = codeValue - ((1 << prefixLength) - 1); |
---|
| 377 | |
---|
| 378 | const UInt totalPrefixLength = prefixLength + COEF_REMAIN_BIN_REDUCTION; |
---|
| 379 | const UInt prefix = (1 << totalPrefixLength) - 1; |
---|
| 380 | const UInt rParamBitMask = (1 << rParam) - 1; |
---|
| 381 | |
---|
| 382 | m_pcBinIf->encodeBinsEP( prefix, totalPrefixLength ); //prefix |
---|
| 383 | m_pcBinIf->encodeBinsEP(((suffix << rParam) | (symbol & rParamBitMask)), (suffixLength + rParam)); //separator, suffix, and rParam bits |
---|
| 384 | } |
---|
[313] | 385 | else |
---|
| 386 | { |
---|
| 387 | length = rParam; |
---|
| 388 | codeNumber = codeNumber - ( COEF_REMAIN_BIN_REDUCTION << rParam); |
---|
[1029] | 389 | |
---|
[313] | 390 | while (codeNumber >= (1<<length)) |
---|
| 391 | { |
---|
[1029] | 392 | codeNumber -= (1<<(length++)); |
---|
[313] | 393 | } |
---|
[1029] | 394 | |
---|
[313] | 395 | m_pcBinIf->encodeBinsEP((1<<(COEF_REMAIN_BIN_REDUCTION+length+1-rParam))-2,COEF_REMAIN_BIN_REDUCTION+length+1-rParam); |
---|
| 396 | m_pcBinIf->encodeBinsEP(codeNumber,length); |
---|
| 397 | } |
---|
| 398 | } |
---|
| 399 | |
---|
| 400 | // SBAC RD |
---|
[1029] | 401 | Void TEncSbac::load ( const TEncSbac* pSrc) |
---|
[313] | 402 | { |
---|
| 403 | this->xCopyFrom(pSrc); |
---|
| 404 | } |
---|
| 405 | |
---|
[1029] | 406 | Void TEncSbac::loadIntraDirMode( const TEncSbac* pSrc, const ChannelType chType ) |
---|
[313] | 407 | { |
---|
| 408 | m_pcBinIf->copyState( pSrc->m_pcBinIf ); |
---|
[1029] | 409 | if (isLuma(chType)) |
---|
[1246] | 410 | { |
---|
[1029] | 411 | this->m_cCUIntraPredSCModel .copyFrom( &pSrc->m_cCUIntraPredSCModel ); |
---|
[1246] | 412 | } |
---|
[1029] | 413 | else |
---|
[1246] | 414 | { |
---|
[1029] | 415 | this->m_cCUChromaPredSCModel .copyFrom( &pSrc->m_cCUChromaPredSCModel ); |
---|
[1246] | 416 | } |
---|
[313] | 417 | } |
---|
| 418 | |
---|
| 419 | |
---|
[1029] | 420 | Void TEncSbac::store( TEncSbac* pDest) const |
---|
[313] | 421 | { |
---|
| 422 | pDest->xCopyFrom( this ); |
---|
| 423 | } |
---|
| 424 | |
---|
| 425 | |
---|
[1029] | 426 | Void TEncSbac::xCopyFrom( const TEncSbac* pSrc ) |
---|
[313] | 427 | { |
---|
| 428 | m_pcBinIf->copyState( pSrc->m_pcBinIf ); |
---|
[1029] | 429 | xCopyContextsFrom(pSrc); |
---|
[313] | 430 | } |
---|
| 431 | |
---|
| 432 | Void TEncSbac::codeMVPIdx ( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList ) |
---|
| 433 | { |
---|
| 434 | Int iSymbol = pcCU->getMVPIdx(eRefList, uiAbsPartIdx); |
---|
| 435 | Int iNum = AMVP_MAX_NUM_CANDS; |
---|
| 436 | |
---|
| 437 | xWriteUnaryMaxSymbol(iSymbol, m_cMVPIdxSCModel.get(0), 1, iNum-1); |
---|
| 438 | } |
---|
| 439 | |
---|
| 440 | Void TEncSbac::codePartSize( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth ) |
---|
| 441 | { |
---|
| 442 | PartSize eSize = pcCU->getPartitionSize( uiAbsPartIdx ); |
---|
[1029] | 443 | |
---|
[313] | 444 | if ( pcCU->isIntra( uiAbsPartIdx ) ) |
---|
| 445 | { |
---|
| 446 | if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth ) |
---|
| 447 | { |
---|
| 448 | m_pcBinIf->encodeBin( eSize == SIZE_2Nx2N? 1 : 0, m_cCUPartSizeSCModel.get( 0, 0, 0 ) ); |
---|
| 449 | } |
---|
| 450 | return; |
---|
| 451 | } |
---|
[1029] | 452 | |
---|
[313] | 453 | switch(eSize) |
---|
| 454 | { |
---|
| 455 | case SIZE_2Nx2N: |
---|
| 456 | { |
---|
| 457 | m_pcBinIf->encodeBin( 1, m_cCUPartSizeSCModel.get( 0, 0, 0) ); |
---|
| 458 | break; |
---|
| 459 | } |
---|
| 460 | case SIZE_2NxN: |
---|
| 461 | case SIZE_2NxnU: |
---|
| 462 | case SIZE_2NxnD: |
---|
| 463 | { |
---|
| 464 | m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 0) ); |
---|
| 465 | m_pcBinIf->encodeBin( 1, m_cCUPartSizeSCModel.get( 0, 0, 1) ); |
---|
[1235] | 466 | if ( pcCU->getSlice()->getSPS()->getUseAMP() && uiDepth < g_uiMaxCUDepth-g_uiAddCUDepth ) |
---|
[313] | 467 | { |
---|
| 468 | if (eSize == SIZE_2NxN) |
---|
| 469 | { |
---|
[595] | 470 | m_pcBinIf->encodeBin(1, m_cCUPartSizeSCModel.get( 0, 0, 3 )); |
---|
[313] | 471 | } |
---|
| 472 | else |
---|
| 473 | { |
---|
[595] | 474 | m_pcBinIf->encodeBin(0, m_cCUPartSizeSCModel.get( 0, 0, 3 )); |
---|
[313] | 475 | m_pcBinIf->encodeBinEP((eSize == SIZE_2NxnU? 0: 1)); |
---|
| 476 | } |
---|
| 477 | } |
---|
| 478 | break; |
---|
| 479 | } |
---|
| 480 | case SIZE_Nx2N: |
---|
| 481 | case SIZE_nLx2N: |
---|
| 482 | case SIZE_nRx2N: |
---|
| 483 | { |
---|
| 484 | m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 0) ); |
---|
| 485 | m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 1) ); |
---|
[1029] | 486 | |
---|
[313] | 487 | if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth && !( pcCU->getWidth(uiAbsPartIdx) == 8 && pcCU->getHeight(uiAbsPartIdx) == 8 ) ) |
---|
| 488 | { |
---|
| 489 | m_pcBinIf->encodeBin( 1, m_cCUPartSizeSCModel.get( 0, 0, 2) ); |
---|
| 490 | } |
---|
[1029] | 491 | |
---|
[1235] | 492 | if ( pcCU->getSlice()->getSPS()->getUseAMP() && uiDepth < g_uiMaxCUDepth-g_uiAddCUDepth ) |
---|
[313] | 493 | { |
---|
| 494 | if (eSize == SIZE_Nx2N) |
---|
| 495 | { |
---|
[595] | 496 | m_pcBinIf->encodeBin(1, m_cCUPartSizeSCModel.get( 0, 0, 3 )); |
---|
[313] | 497 | } |
---|
| 498 | else |
---|
| 499 | { |
---|
[595] | 500 | m_pcBinIf->encodeBin(0, m_cCUPartSizeSCModel.get( 0, 0, 3 )); |
---|
[313] | 501 | m_pcBinIf->encodeBinEP((eSize == SIZE_nLx2N? 0: 1)); |
---|
| 502 | } |
---|
| 503 | } |
---|
| 504 | break; |
---|
| 505 | } |
---|
| 506 | case SIZE_NxN: |
---|
| 507 | { |
---|
| 508 | if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth && !( pcCU->getWidth(uiAbsPartIdx) == 8 && pcCU->getHeight(uiAbsPartIdx) == 8 ) ) |
---|
| 509 | { |
---|
| 510 | m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 0) ); |
---|
| 511 | m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 1) ); |
---|
| 512 | m_pcBinIf->encodeBin( 0, m_cCUPartSizeSCModel.get( 0, 0, 2) ); |
---|
| 513 | } |
---|
| 514 | break; |
---|
| 515 | } |
---|
| 516 | default: |
---|
| 517 | { |
---|
| 518 | assert(0); |
---|
[1029] | 519 | break; |
---|
[313] | 520 | } |
---|
| 521 | } |
---|
| 522 | } |
---|
| 523 | |
---|
[1029] | 524 | |
---|
[313] | 525 | /** code prediction mode |
---|
| 526 | * \param pcCU |
---|
[1029] | 527 | * \param uiAbsPartIdx |
---|
[313] | 528 | * \returns Void |
---|
| 529 | */ |
---|
| 530 | Void TEncSbac::codePredMode( TComDataCU* pcCU, UInt uiAbsPartIdx ) |
---|
| 531 | { |
---|
| 532 | // get context function is here |
---|
[1029] | 533 | m_pcBinIf->encodeBin( pcCU->isIntra( uiAbsPartIdx ) ? 1 : 0, m_cCUPredModeSCModel.get( 0, 0, 0 ) ); |
---|
[313] | 534 | } |
---|
| 535 | |
---|
| 536 | Void TEncSbac::codeCUTransquantBypassFlag( TComDataCU* pcCU, UInt uiAbsPartIdx ) |
---|
| 537 | { |
---|
| 538 | UInt uiSymbol = pcCU->getCUTransquantBypass(uiAbsPartIdx); |
---|
| 539 | m_pcBinIf->encodeBin( uiSymbol, m_CUTransquantBypassFlagSCModel.get( 0, 0, 0 ) ); |
---|
| 540 | } |
---|
| 541 | |
---|
| 542 | /** code skip flag |
---|
| 543 | * \param pcCU |
---|
[1029] | 544 | * \param uiAbsPartIdx |
---|
[313] | 545 | * \returns Void |
---|
| 546 | */ |
---|
| 547 | Void TEncSbac::codeSkipFlag( TComDataCU* pcCU, UInt uiAbsPartIdx ) |
---|
| 548 | { |
---|
| 549 | // get context function is here |
---|
| 550 | UInt uiSymbol = pcCU->isSkipped( uiAbsPartIdx ) ? 1 : 0; |
---|
| 551 | UInt uiCtxSkip = pcCU->getCtxSkipFlag( uiAbsPartIdx ) ; |
---|
| 552 | m_pcBinIf->encodeBin( uiSymbol, m_cCUSkipFlagSCModel.get( 0, 0, uiCtxSkip ) ); |
---|
| 553 | DTRACE_CABAC_VL( g_nSymbolCounter++ ); |
---|
| 554 | DTRACE_CABAC_T( "\tSkipFlag" ); |
---|
| 555 | DTRACE_CABAC_T( "\tuiCtxSkip: "); |
---|
| 556 | DTRACE_CABAC_V( uiCtxSkip ); |
---|
| 557 | DTRACE_CABAC_T( "\tuiSymbol: "); |
---|
| 558 | DTRACE_CABAC_V( uiSymbol ); |
---|
| 559 | DTRACE_CABAC_T( "\n"); |
---|
| 560 | } |
---|
| 561 | |
---|
| 562 | /** code merge flag |
---|
| 563 | * \param pcCU |
---|
[1029] | 564 | * \param uiAbsPartIdx |
---|
[313] | 565 | * \returns Void |
---|
| 566 | */ |
---|
| 567 | Void TEncSbac::codeMergeFlag( TComDataCU* pcCU, UInt uiAbsPartIdx ) |
---|
| 568 | { |
---|
| 569 | const UInt uiSymbol = pcCU->getMergeFlag( uiAbsPartIdx ) ? 1 : 0; |
---|
| 570 | m_pcBinIf->encodeBin( uiSymbol, *m_cCUMergeFlagExtSCModel.get( 0 ) ); |
---|
| 571 | |
---|
| 572 | DTRACE_CABAC_VL( g_nSymbolCounter++ ); |
---|
| 573 | DTRACE_CABAC_T( "\tMergeFlag: " ); |
---|
| 574 | DTRACE_CABAC_V( uiSymbol ); |
---|
| 575 | DTRACE_CABAC_T( "\tAddress: " ); |
---|
[1029] | 576 | DTRACE_CABAC_V( pcCU->getCtuRsAddr() ); |
---|
[313] | 577 | DTRACE_CABAC_T( "\tuiAbsPartIdx: " ); |
---|
| 578 | DTRACE_CABAC_V( uiAbsPartIdx ); |
---|
| 579 | DTRACE_CABAC_T( "\n" ); |
---|
| 580 | } |
---|
| 581 | |
---|
| 582 | /** code merge index |
---|
| 583 | * \param pcCU |
---|
[1029] | 584 | * \param uiAbsPartIdx |
---|
[313] | 585 | * \returns Void |
---|
| 586 | */ |
---|
| 587 | Void TEncSbac::codeMergeIndex( TComDataCU* pcCU, UInt uiAbsPartIdx ) |
---|
| 588 | { |
---|
| 589 | UInt uiUnaryIdx = pcCU->getMergeIndex( uiAbsPartIdx ); |
---|
| 590 | UInt uiNumCand = pcCU->getSlice()->getMaxNumMergeCand(); |
---|
| 591 | if ( uiNumCand > 1 ) |
---|
| 592 | { |
---|
| 593 | for( UInt ui = 0; ui < uiNumCand - 1; ++ui ) |
---|
| 594 | { |
---|
| 595 | const UInt uiSymbol = ui == uiUnaryIdx ? 0 : 1; |
---|
| 596 | if ( ui==0 ) |
---|
| 597 | { |
---|
| 598 | m_pcBinIf->encodeBin( uiSymbol, m_cCUMergeIdxExtSCModel.get( 0, 0, 0 ) ); |
---|
| 599 | } |
---|
| 600 | else |
---|
| 601 | { |
---|
| 602 | m_pcBinIf->encodeBinEP( uiSymbol ); |
---|
| 603 | } |
---|
| 604 | if( uiSymbol == 0 ) |
---|
| 605 | { |
---|
| 606 | break; |
---|
| 607 | } |
---|
| 608 | } |
---|
| 609 | } |
---|
| 610 | DTRACE_CABAC_VL( g_nSymbolCounter++ ); |
---|
| 611 | DTRACE_CABAC_T( "\tparseMergeIndex()" ); |
---|
| 612 | DTRACE_CABAC_T( "\tuiMRGIdx= " ); |
---|
| 613 | DTRACE_CABAC_V( pcCU->getMergeIndex( uiAbsPartIdx ) ); |
---|
| 614 | DTRACE_CABAC_T( "\n" ); |
---|
| 615 | } |
---|
| 616 | |
---|
| 617 | Void TEncSbac::codeSplitFlag ( TComDataCU* pcCU, UInt uiAbsPartIdx, UInt uiDepth ) |
---|
| 618 | { |
---|
| 619 | if( uiDepth == g_uiMaxCUDepth - g_uiAddCUDepth ) |
---|
[1246] | 620 | { |
---|
[313] | 621 | return; |
---|
[1246] | 622 | } |
---|
[1029] | 623 | |
---|
[313] | 624 | UInt uiCtx = pcCU->getCtxSplitFlag( uiAbsPartIdx, uiDepth ); |
---|
| 625 | UInt uiCurrSplitFlag = ( pcCU->getDepth( uiAbsPartIdx ) > uiDepth ) ? 1 : 0; |
---|
[1029] | 626 | |
---|
[313] | 627 | assert( uiCtx < 3 ); |
---|
| 628 | m_pcBinIf->encodeBin( uiCurrSplitFlag, m_cCUSplitFlagSCModel.get( 0, 0, uiCtx ) ); |
---|
| 629 | DTRACE_CABAC_VL( g_nSymbolCounter++ ) |
---|
| 630 | DTRACE_CABAC_T( "\tSplitFlag\n" ) |
---|
| 631 | return; |
---|
| 632 | } |
---|
| 633 | |
---|
| 634 | Void TEncSbac::codeTransformSubdivFlag( UInt uiSymbol, UInt uiCtx ) |
---|
| 635 | { |
---|
| 636 | m_pcBinIf->encodeBin( uiSymbol, m_cCUTransSubdivFlagSCModel.get( 0, 0, uiCtx ) ); |
---|
| 637 | DTRACE_CABAC_VL( g_nSymbolCounter++ ) |
---|
| 638 | DTRACE_CABAC_T( "\tparseTransformSubdivFlag()" ) |
---|
| 639 | DTRACE_CABAC_T( "\tsymbol=" ) |
---|
| 640 | DTRACE_CABAC_V( uiSymbol ) |
---|
| 641 | DTRACE_CABAC_T( "\tctx=" ) |
---|
| 642 | DTRACE_CABAC_V( uiCtx ) |
---|
| 643 | DTRACE_CABAC_T( "\n" ) |
---|
| 644 | } |
---|
| 645 | |
---|
[1029] | 646 | |
---|
[313] | 647 | Void TEncSbac::codeIntraDirLumaAng( TComDataCU* pcCU, UInt absPartIdx, Bool isMultiple) |
---|
| 648 | { |
---|
| 649 | UInt dir[4],j; |
---|
[1029] | 650 | Int preds[4][NUM_MOST_PROBABLE_MODES] = {{-1, -1, -1},{-1, -1, -1},{-1, -1, -1},{-1, -1, -1}}; |
---|
[1244] | 651 | Int predIdx[4] ={ -1,-1,-1,-1}; |
---|
[313] | 652 | PartSize mode = pcCU->getPartitionSize( absPartIdx ); |
---|
| 653 | UInt partNum = isMultiple?(mode==SIZE_NxN?4:1):1; |
---|
[1029] | 654 | UInt partOffset = ( pcCU->getPic()->getNumPartitionsInCtu() >> ( pcCU->getDepth(absPartIdx) << 1 ) ) >> 2; |
---|
[313] | 655 | for (j=0;j<partNum;j++) |
---|
| 656 | { |
---|
[1029] | 657 | dir[j] = pcCU->getIntraDir( CHANNEL_TYPE_LUMA, absPartIdx+partOffset*j ); |
---|
[1244] | 658 | pcCU->getIntraDirPredictor(absPartIdx+partOffset*j, preds[j], COMPONENT_Y); |
---|
| 659 | for(UInt i = 0; i < NUM_MOST_PROBABLE_MODES; i++) |
---|
[313] | 660 | { |
---|
| 661 | if(dir[j] == preds[j][i]) |
---|
| 662 | { |
---|
| 663 | predIdx[j] = i; |
---|
| 664 | } |
---|
| 665 | } |
---|
| 666 | m_pcBinIf->encodeBin((predIdx[j] != -1)? 1 : 0, m_cCUIntraPredSCModel.get( 0, 0, 0 ) ); |
---|
[1029] | 667 | } |
---|
[313] | 668 | for (j=0;j<partNum;j++) |
---|
| 669 | { |
---|
| 670 | if(predIdx[j] != -1) |
---|
| 671 | { |
---|
| 672 | m_pcBinIf->encodeBinEP( predIdx[j] ? 1 : 0 ); |
---|
| 673 | if (predIdx[j]) |
---|
| 674 | { |
---|
| 675 | m_pcBinIf->encodeBinEP( predIdx[j]-1 ); |
---|
| 676 | } |
---|
| 677 | } |
---|
| 678 | else |
---|
| 679 | { |
---|
| 680 | if (preds[j][0] > preds[j][1]) |
---|
[1029] | 681 | { |
---|
| 682 | std::swap(preds[j][0], preds[j][1]); |
---|
[313] | 683 | } |
---|
| 684 | if (preds[j][0] > preds[j][2]) |
---|
| 685 | { |
---|
| 686 | std::swap(preds[j][0], preds[j][2]); |
---|
| 687 | } |
---|
| 688 | if (preds[j][1] > preds[j][2]) |
---|
| 689 | { |
---|
| 690 | std::swap(preds[j][1], preds[j][2]); |
---|
| 691 | } |
---|
[1244] | 692 | for(Int i = (Int(NUM_MOST_PROBABLE_MODES) - 1); i >= 0; i--) |
---|
[313] | 693 | { |
---|
| 694 | dir[j] = dir[j] > preds[j][i] ? dir[j] - 1 : dir[j]; |
---|
| 695 | } |
---|
| 696 | m_pcBinIf->encodeBinsEP( dir[j], 5 ); |
---|
| 697 | } |
---|
| 698 | } |
---|
| 699 | return; |
---|
| 700 | } |
---|
| 701 | |
---|
| 702 | Void TEncSbac::codeIntraDirChroma( TComDataCU* pcCU, UInt uiAbsPartIdx ) |
---|
| 703 | { |
---|
[1029] | 704 | UInt uiIntraDirChroma = pcCU->getIntraDir( CHANNEL_TYPE_CHROMA, uiAbsPartIdx ); |
---|
[313] | 705 | |
---|
[1029] | 706 | if( uiIntraDirChroma == DM_CHROMA_IDX ) |
---|
[313] | 707 | { |
---|
| 708 | m_pcBinIf->encodeBin( 0, m_cCUChromaPredSCModel.get( 0, 0, 0 ) ); |
---|
| 709 | } |
---|
| 710 | else |
---|
[1029] | 711 | { |
---|
| 712 | m_pcBinIf->encodeBin( 1, m_cCUChromaPredSCModel.get( 0, 0, 0 ) ); |
---|
| 713 | |
---|
[313] | 714 | UInt uiAllowedChromaDir[ NUM_CHROMA_MODE ]; |
---|
| 715 | pcCU->getAllowedChromaDir( uiAbsPartIdx, uiAllowedChromaDir ); |
---|
| 716 | |
---|
| 717 | for( Int i = 0; i < NUM_CHROMA_MODE - 1; i++ ) |
---|
| 718 | { |
---|
| 719 | if( uiIntraDirChroma == uiAllowedChromaDir[i] ) |
---|
| 720 | { |
---|
| 721 | uiIntraDirChroma = i; |
---|
| 722 | break; |
---|
| 723 | } |
---|
| 724 | } |
---|
| 725 | |
---|
| 726 | m_pcBinIf->encodeBinsEP( uiIntraDirChroma, 2 ); |
---|
| 727 | } |
---|
[1029] | 728 | |
---|
[313] | 729 | return; |
---|
| 730 | } |
---|
| 731 | |
---|
[1029] | 732 | |
---|
[313] | 733 | Void TEncSbac::codeInterDir( TComDataCU* pcCU, UInt uiAbsPartIdx ) |
---|
| 734 | { |
---|
| 735 | const UInt uiInterDir = pcCU->getInterDir( uiAbsPartIdx ) - 1; |
---|
| 736 | const UInt uiCtx = pcCU->getCtxInterDir( uiAbsPartIdx ); |
---|
| 737 | ContextModel *pCtx = m_cCUInterDirSCModel.get( 0 ); |
---|
[1029] | 738 | |
---|
[313] | 739 | if (pcCU->getPartitionSize(uiAbsPartIdx) == SIZE_2Nx2N || pcCU->getHeight(uiAbsPartIdx) != 8 ) |
---|
| 740 | { |
---|
| 741 | m_pcBinIf->encodeBin( uiInterDir == 2 ? 1 : 0, *( pCtx + uiCtx ) ); |
---|
| 742 | } |
---|
[1029] | 743 | |
---|
[313] | 744 | if (uiInterDir < 2) |
---|
| 745 | { |
---|
| 746 | m_pcBinIf->encodeBin( uiInterDir, *( pCtx + 4 ) ); |
---|
| 747 | } |
---|
[1029] | 748 | |
---|
[313] | 749 | return; |
---|
| 750 | } |
---|
| 751 | |
---|
| 752 | Void TEncSbac::codeRefFrmIdx( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList ) |
---|
| 753 | { |
---|
[1029] | 754 | Int iRefFrame = pcCU->getCUMvField( eRefList )->getRefIdx( uiAbsPartIdx ); |
---|
| 755 | ContextModel *pCtx = m_cCURefPicSCModel.get( 0 ); |
---|
| 756 | m_pcBinIf->encodeBin( ( iRefFrame == 0 ? 0 : 1 ), *pCtx ); |
---|
| 757 | |
---|
| 758 | if( iRefFrame > 0 ) |
---|
[313] | 759 | { |
---|
[1029] | 760 | UInt uiRefNum = pcCU->getSlice()->getNumRefIdx( eRefList ) - 2; |
---|
| 761 | pCtx++; |
---|
| 762 | iRefFrame--; |
---|
| 763 | for( UInt ui = 0; ui < uiRefNum; ++ui ) |
---|
[313] | 764 | { |
---|
[1029] | 765 | const UInt uiSymbol = ui == iRefFrame ? 0 : 1; |
---|
| 766 | if( ui == 0 ) |
---|
[313] | 767 | { |
---|
[1029] | 768 | m_pcBinIf->encodeBin( uiSymbol, *pCtx ); |
---|
[313] | 769 | } |
---|
[1029] | 770 | else |
---|
| 771 | { |
---|
| 772 | m_pcBinIf->encodeBinEP( uiSymbol ); |
---|
| 773 | } |
---|
| 774 | if( uiSymbol == 0 ) |
---|
| 775 | { |
---|
| 776 | break; |
---|
| 777 | } |
---|
[313] | 778 | } |
---|
| 779 | } |
---|
| 780 | return; |
---|
| 781 | } |
---|
| 782 | |
---|
| 783 | Void TEncSbac::codeMvd( TComDataCU* pcCU, UInt uiAbsPartIdx, RefPicList eRefList ) |
---|
| 784 | { |
---|
| 785 | if(pcCU->getSlice()->getMvdL1ZeroFlag() && eRefList == REF_PIC_LIST_1 && pcCU->getInterDir(uiAbsPartIdx)==3) |
---|
| 786 | { |
---|
| 787 | return; |
---|
| 788 | } |
---|
| 789 | |
---|
| 790 | const TComCUMvField* pcCUMvField = pcCU->getCUMvField( eRefList ); |
---|
| 791 | const Int iHor = pcCUMvField->getMvd( uiAbsPartIdx ).getHor(); |
---|
| 792 | const Int iVer = pcCUMvField->getMvd( uiAbsPartIdx ).getVer(); |
---|
| 793 | ContextModel* pCtx = m_cCUMvdSCModel.get( 0 ); |
---|
| 794 | |
---|
| 795 | m_pcBinIf->encodeBin( iHor != 0 ? 1 : 0, *pCtx ); |
---|
| 796 | m_pcBinIf->encodeBin( iVer != 0 ? 1 : 0, *pCtx ); |
---|
| 797 | |
---|
| 798 | const Bool bHorAbsGr0 = iHor != 0; |
---|
| 799 | const Bool bVerAbsGr0 = iVer != 0; |
---|
| 800 | const UInt uiHorAbs = 0 > iHor ? -iHor : iHor; |
---|
| 801 | const UInt uiVerAbs = 0 > iVer ? -iVer : iVer; |
---|
| 802 | pCtx++; |
---|
| 803 | |
---|
| 804 | if( bHorAbsGr0 ) |
---|
| 805 | { |
---|
| 806 | m_pcBinIf->encodeBin( uiHorAbs > 1 ? 1 : 0, *pCtx ); |
---|
| 807 | } |
---|
| 808 | |
---|
| 809 | if( bVerAbsGr0 ) |
---|
| 810 | { |
---|
| 811 | m_pcBinIf->encodeBin( uiVerAbs > 1 ? 1 : 0, *pCtx ); |
---|
| 812 | } |
---|
| 813 | |
---|
| 814 | if( bHorAbsGr0 ) |
---|
| 815 | { |
---|
| 816 | if( uiHorAbs > 1 ) |
---|
| 817 | { |
---|
| 818 | xWriteEpExGolomb( uiHorAbs-2, 1 ); |
---|
| 819 | } |
---|
| 820 | |
---|
| 821 | m_pcBinIf->encodeBinEP( 0 > iHor ? 1 : 0 ); |
---|
| 822 | } |
---|
| 823 | |
---|
| 824 | if( bVerAbsGr0 ) |
---|
| 825 | { |
---|
| 826 | if( uiVerAbs > 1 ) |
---|
| 827 | { |
---|
| 828 | xWriteEpExGolomb( uiVerAbs-2, 1 ); |
---|
| 829 | } |
---|
| 830 | |
---|
| 831 | m_pcBinIf->encodeBinEP( 0 > iVer ? 1 : 0 ); |
---|
| 832 | } |
---|
[1029] | 833 | |
---|
[313] | 834 | return; |
---|
| 835 | } |
---|
| 836 | |
---|
[1029] | 837 | Void TEncSbac::codeCrossComponentPrediction( TComTU &rTu, ComponentID compID ) |
---|
| 838 | { |
---|
| 839 | TComDataCU *pcCU = rTu.getCU(); |
---|
| 840 | |
---|
[1246] | 841 | if( isLuma(compID) || !pcCU->getSlice()->getPPS()->getUseCrossComponentPrediction() ) |
---|
| 842 | { |
---|
| 843 | return; |
---|
| 844 | } |
---|
[1029] | 845 | |
---|
| 846 | const UInt uiAbsPartIdx = rTu.GetAbsPartIdxTU(); |
---|
| 847 | |
---|
| 848 | if (!pcCU->isIntra(uiAbsPartIdx) || (pcCU->getIntraDir( CHANNEL_TYPE_CHROMA, uiAbsPartIdx ) == DM_CHROMA_IDX)) |
---|
| 849 | { |
---|
| 850 | DTRACE_CABAC_VL( g_nSymbolCounter++ ) |
---|
| 851 | DTRACE_CABAC_T("\tparseCrossComponentPrediction()") |
---|
| 852 | DTRACE_CABAC_T( "\tAddr=" ) |
---|
| 853 | DTRACE_CABAC_V( compID ) |
---|
| 854 | DTRACE_CABAC_T( "\tuiAbsPartIdx=" ) |
---|
| 855 | DTRACE_CABAC_V( uiAbsPartIdx ) |
---|
| 856 | |
---|
| 857 | Int alpha = pcCU->getCrossComponentPredictionAlpha( uiAbsPartIdx, compID ); |
---|
| 858 | ContextModel *pCtx = m_cCrossComponentPredictionSCModel.get(0, 0) + ((compID == COMPONENT_Cr) ? (NUM_CROSS_COMPONENT_PREDICTION_CTX >> 1) : 0); |
---|
| 859 | m_pcBinIf->encodeBin(((alpha != 0) ? 1 : 0), pCtx[0]); |
---|
| 860 | |
---|
| 861 | if (alpha != 0) |
---|
| 862 | { |
---|
| 863 | static const Int log2AbsAlphaMinus1Table[8] = { 0, 1, 1, 2, 2, 2, 3, 3 }; |
---|
| 864 | assert(abs(alpha) <= 8); |
---|
| 865 | |
---|
| 866 | if (abs(alpha)>1) |
---|
| 867 | { |
---|
| 868 | m_pcBinIf->encodeBin(1, pCtx[1]); |
---|
| 869 | xWriteUnaryMaxSymbol( log2AbsAlphaMinus1Table[abs(alpha) - 1] - 1, (pCtx + 2), 1, 2 ); |
---|
| 870 | } |
---|
| 871 | else |
---|
| 872 | { |
---|
| 873 | m_pcBinIf->encodeBin(0, pCtx[1]); |
---|
| 874 | } |
---|
| 875 | m_pcBinIf->encodeBin( ((alpha < 0) ? 1 : 0), pCtx[4] ); |
---|
| 876 | } |
---|
| 877 | DTRACE_CABAC_T( "\tAlpha=" ) |
---|
| 878 | DTRACE_CABAC_V( pcCU->getCrossComponentPredictionAlpha( uiAbsPartIdx, compID ) ) |
---|
| 879 | DTRACE_CABAC_T( "\n" ) |
---|
| 880 | } |
---|
| 881 | } |
---|
| 882 | |
---|
[313] | 883 | Void TEncSbac::codeDeltaQP( TComDataCU* pcCU, UInt uiAbsPartIdx ) |
---|
| 884 | { |
---|
| 885 | Int iDQp = pcCU->getQP( uiAbsPartIdx ) - pcCU->getRefQP( uiAbsPartIdx ); |
---|
| 886 | |
---|
[1203] | 887 | #if SVC_EXTENSION |
---|
[442] | 888 | Int qpBdOffsetY = pcCU->getSlice()->getQpBDOffsetY(); |
---|
| 889 | #else |
---|
[1029] | 890 | Int qpBdOffsetY = pcCU->getSlice()->getSPS()->getQpBDOffset(CHANNEL_TYPE_LUMA); |
---|
[442] | 891 | #endif |
---|
[313] | 892 | iDQp = (iDQp + 78 + qpBdOffsetY + (qpBdOffsetY/2)) % (52 + qpBdOffsetY) - 26 - (qpBdOffsetY/2); |
---|
| 893 | |
---|
| 894 | UInt uiAbsDQp = (UInt)((iDQp > 0)? iDQp : (-iDQp)); |
---|
| 895 | UInt TUValue = min((Int)uiAbsDQp, CU_DQP_TU_CMAX); |
---|
| 896 | xWriteUnaryMaxSymbol( TUValue, &m_cCUDeltaQpSCModel.get( 0, 0, 0 ), 1, CU_DQP_TU_CMAX); |
---|
| 897 | if( uiAbsDQp >= CU_DQP_TU_CMAX ) |
---|
| 898 | { |
---|
| 899 | xWriteEpExGolomb( uiAbsDQp - CU_DQP_TU_CMAX, CU_DQP_EG_k ); |
---|
| 900 | } |
---|
| 901 | |
---|
| 902 | if ( uiAbsDQp > 0) |
---|
| 903 | { |
---|
| 904 | UInt uiSign = (iDQp > 0 ? 0 : 1); |
---|
| 905 | m_pcBinIf->encodeBinEP(uiSign); |
---|
| 906 | } |
---|
| 907 | |
---|
| 908 | return; |
---|
| 909 | } |
---|
| 910 | |
---|
[1029] | 911 | /** code chroma qp adjustment, converting from the internal table representation |
---|
| 912 | * \returns Void |
---|
| 913 | */ |
---|
| 914 | Void TEncSbac::codeChromaQpAdjustment( TComDataCU* cu, UInt absPartIdx ) |
---|
[313] | 915 | { |
---|
[1029] | 916 | Int internalIdc = cu->getChromaQpAdj( absPartIdx ); |
---|
| 917 | Int tableSize = cu->getSlice()->getPPS()->getChromaQpAdjTableSize(); |
---|
| 918 | /* internal_idc == 0 => flag = 0 |
---|
| 919 | * internal_idc > 1 => code idc value (if table size warrents) */ |
---|
| 920 | m_pcBinIf->encodeBin( internalIdc > 0, m_ChromaQpAdjFlagSCModel.get( 0, 0, 0 ) ); |
---|
| 921 | |
---|
| 922 | if (internalIdc > 0 && tableSize > 1) |
---|
| 923 | { |
---|
| 924 | xWriteUnaryMaxSymbol( internalIdc - 1, &m_ChromaQpAdjIdcSCModel.get( 0, 0, 0 ), 0, tableSize - 1 ); |
---|
| 925 | } |
---|
[313] | 926 | } |
---|
| 927 | |
---|
[1029] | 928 | Void TEncSbac::codeQtCbf( TComTU &rTu, const ComponentID compID, const Bool lowestLevel ) |
---|
[313] | 929 | { |
---|
[1029] | 930 | TComDataCU* pcCU = rTu.getCU(); |
---|
| 931 | |
---|
| 932 | const UInt absPartIdx = rTu.GetAbsPartIdxTU(compID); |
---|
| 933 | const UInt TUDepth = rTu.GetTransformDepthRel(); |
---|
| 934 | UInt uiCtx = pcCU->getCtxQtCbf( rTu, toChannelType(compID) ); |
---|
| 935 | const UInt contextSet = toChannelType(compID); |
---|
| 936 | |
---|
| 937 | const UInt width = rTu.getRect(compID).width; |
---|
| 938 | const UInt height = rTu.getRect(compID).height; |
---|
| 939 | const Bool canQuadSplit = (width >= (MIN_TU_SIZE * 2)) && (height >= (MIN_TU_SIZE * 2)); |
---|
| 940 | |
---|
| 941 | // Since the CBF for chroma is coded at the highest level possible, if sub-TUs are |
---|
| 942 | // to be coded for a 4x8 chroma TU, their CBFs must be coded at the highest 4x8 level |
---|
| 943 | // (i.e. where luma TUs are 8x8 rather than 4x4) |
---|
| 944 | // ___ ___ |
---|
| 945 | // | | | <- 4 x (8x8 luma + 4x8 4:2:2 chroma) |
---|
| 946 | // |___|___| each quadrant has its own chroma CBF |
---|
| 947 | // | | | _ _ _ _ |
---|
| 948 | // |___|___| | |
---|
| 949 | // <--16---> V |
---|
| 950 | // _ _ |
---|
| 951 | // |_|_| <- 4 x 4x4 luma + 1 x 4x8 4:2:2 chroma |
---|
| 952 | // |_|_| no chroma CBF is coded - instead the parent CBF is inherited |
---|
| 953 | // <-8-> if sub-TUs are present, their CBFs had to be coded at the parent level |
---|
| 954 | |
---|
| 955 | const UInt lowestTUDepth = TUDepth + ((!lowestLevel && !canQuadSplit) ? 1 : 0); //unsplittable TUs inherit their parent's CBF |
---|
| 956 | |
---|
| 957 | if ((width != height) && (lowestLevel || !canQuadSplit)) //if sub-TUs are present |
---|
| 958 | { |
---|
| 959 | 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) |
---|
| 960 | const UInt partIdxesPerSubTU = rTu.GetAbsPartIdxNumParts(compID) >> 1; |
---|
| 961 | |
---|
| 962 | for (UInt subTU = 0; subTU < 2; subTU++) |
---|
| 963 | { |
---|
| 964 | const UInt subTUAbsPartIdx = absPartIdx + (subTU * partIdxesPerSubTU); |
---|
| 965 | const UInt uiCbf = pcCU->getCbf(subTUAbsPartIdx, compID, subTUDepth); |
---|
| 966 | |
---|
| 967 | m_pcBinIf->encodeBin(uiCbf, m_cCUQtCbfSCModel.get(0, contextSet, uiCtx)); |
---|
| 968 | |
---|
| 969 | DTRACE_CABAC_VL( g_nSymbolCounter++ ) |
---|
| 970 | DTRACE_CABAC_T( "\tparseQtCbf()" ) |
---|
| 971 | DTRACE_CABAC_T( "\tsub-TU=" ) |
---|
| 972 | DTRACE_CABAC_V( subTU ) |
---|
| 973 | DTRACE_CABAC_T( "\tsymbol=" ) |
---|
| 974 | DTRACE_CABAC_V( uiCbf ) |
---|
| 975 | DTRACE_CABAC_T( "\tctx=" ) |
---|
| 976 | DTRACE_CABAC_V( uiCtx ) |
---|
| 977 | DTRACE_CABAC_T( "\tetype=" ) |
---|
| 978 | DTRACE_CABAC_V( compID ) |
---|
| 979 | DTRACE_CABAC_T( "\tuiAbsPartIdx=" ) |
---|
| 980 | DTRACE_CABAC_V( subTUAbsPartIdx ) |
---|
| 981 | DTRACE_CABAC_T( "\n" ) |
---|
| 982 | } |
---|
| 983 | } |
---|
| 984 | else |
---|
| 985 | { |
---|
| 986 | const UInt uiCbf = pcCU->getCbf( absPartIdx, compID, lowestTUDepth ); |
---|
| 987 | m_pcBinIf->encodeBin( uiCbf , m_cCUQtCbfSCModel.get( 0, contextSet, uiCtx ) ); |
---|
| 988 | |
---|
| 989 | |
---|
| 990 | DTRACE_CABAC_VL( g_nSymbolCounter++ ) |
---|
| 991 | DTRACE_CABAC_T( "\tparseQtCbf()" ) |
---|
| 992 | DTRACE_CABAC_T( "\tsymbol=" ) |
---|
| 993 | DTRACE_CABAC_V( uiCbf ) |
---|
| 994 | DTRACE_CABAC_T( "\tctx=" ) |
---|
| 995 | DTRACE_CABAC_V( uiCtx ) |
---|
| 996 | DTRACE_CABAC_T( "\tetype=" ) |
---|
| 997 | DTRACE_CABAC_V( compID ) |
---|
| 998 | DTRACE_CABAC_T( "\tuiAbsPartIdx=" ) |
---|
| 999 | DTRACE_CABAC_V( rTu.GetAbsPartIdxTU(compID) ) |
---|
| 1000 | DTRACE_CABAC_T( "\n" ) |
---|
| 1001 | } |
---|
| 1002 | } |
---|
| 1003 | |
---|
| 1004 | |
---|
| 1005 | Void TEncSbac::codeTransformSkipFlags (TComTU &rTu, ComponentID component ) |
---|
| 1006 | { |
---|
| 1007 | TComDataCU* pcCU=rTu.getCU(); |
---|
| 1008 | const UInt uiAbsPartIdx=rTu.GetAbsPartIdxTU(); |
---|
| 1009 | |
---|
[313] | 1010 | if (pcCU->getCUTransquantBypass(uiAbsPartIdx)) |
---|
| 1011 | { |
---|
| 1012 | return; |
---|
| 1013 | } |
---|
[1029] | 1014 | |
---|
| 1015 | if (!TUCompRectHasAssociatedTransformSkipFlag(rTu.getRect(component), pcCU->getSlice()->getPPS()->getTransformSkipLog2MaxSize())) |
---|
[313] | 1016 | { |
---|
| 1017 | return; |
---|
| 1018 | } |
---|
| 1019 | |
---|
[1029] | 1020 | UInt useTransformSkip = pcCU->getTransformSkip( uiAbsPartIdx,component); |
---|
| 1021 | m_pcBinIf->encodeBin( useTransformSkip, m_cTransformSkipSCModel.get( 0, toChannelType(component), 0 ) ); |
---|
| 1022 | |
---|
[313] | 1023 | DTRACE_CABAC_VL( g_nSymbolCounter++ ) |
---|
| 1024 | DTRACE_CABAC_T("\tparseTransformSkip()"); |
---|
| 1025 | DTRACE_CABAC_T( "\tsymbol=" ) |
---|
| 1026 | DTRACE_CABAC_V( useTransformSkip ) |
---|
| 1027 | DTRACE_CABAC_T( "\tAddr=" ) |
---|
[1029] | 1028 | DTRACE_CABAC_V( pcCU->getCtuRsAddr() ) |
---|
[313] | 1029 | DTRACE_CABAC_T( "\tetype=" ) |
---|
[1029] | 1030 | DTRACE_CABAC_V( component ) |
---|
[313] | 1031 | DTRACE_CABAC_T( "\tuiAbsPartIdx=" ) |
---|
[1029] | 1032 | DTRACE_CABAC_V( rTu.GetAbsPartIdxTU() ) |
---|
[313] | 1033 | DTRACE_CABAC_T( "\n" ) |
---|
| 1034 | } |
---|
| 1035 | |
---|
[1029] | 1036 | |
---|
[313] | 1037 | /** Code I_PCM information. |
---|
| 1038 | * \param pcCU pointer to CU |
---|
| 1039 | * \param uiAbsPartIdx CU index |
---|
| 1040 | * \returns Void |
---|
| 1041 | */ |
---|
| 1042 | Void TEncSbac::codeIPCMInfo( TComDataCU* pcCU, UInt uiAbsPartIdx ) |
---|
| 1043 | { |
---|
| 1044 | UInt uiIPCM = (pcCU->getIPCMFlag(uiAbsPartIdx) == true)? 1 : 0; |
---|
| 1045 | |
---|
| 1046 | Bool writePCMSampleFlag = pcCU->getIPCMFlag(uiAbsPartIdx); |
---|
| 1047 | |
---|
| 1048 | m_pcBinIf->encodeBinTrm (uiIPCM); |
---|
| 1049 | |
---|
| 1050 | if (writePCMSampleFlag) |
---|
| 1051 | { |
---|
| 1052 | m_pcBinIf->encodePCMAlignBits(); |
---|
| 1053 | |
---|
[1029] | 1054 | const UInt minCoeffSizeY = pcCU->getPic()->getMinCUWidth() * pcCU->getPic()->getMinCUHeight(); |
---|
| 1055 | const UInt offsetY = minCoeffSizeY * uiAbsPartIdx; |
---|
| 1056 | for (UInt ch=0; ch < pcCU->getPic()->getNumberValidComponents(); ch++) |
---|
[313] | 1057 | { |
---|
[1029] | 1058 | const ComponentID compID = ComponentID(ch); |
---|
| 1059 | const UInt offset = offsetY >> (pcCU->getPic()->getComponentScaleX(compID) + pcCU->getPic()->getComponentScaleY(compID)); |
---|
| 1060 | Pel * pPCMSample = pcCU->getPCMSample(compID) + offset; |
---|
| 1061 | const UInt width = pcCU->getWidth (uiAbsPartIdx) >> pcCU->getPic()->getComponentScaleX(compID); |
---|
| 1062 | const UInt height = pcCU->getHeight(uiAbsPartIdx) >> pcCU->getPic()->getComponentScaleY(compID); |
---|
| 1063 | const UInt sampleBits = pcCU->getSlice()->getSPS()->getPCMBitDepth(toChannelType(compID)); |
---|
| 1064 | for (UInt y=0; y<height; y++) |
---|
[313] | 1065 | { |
---|
[1029] | 1066 | for (UInt x=0; x<width; x++) |
---|
| 1067 | { |
---|
| 1068 | UInt sample = pPCMSample[x]; |
---|
| 1069 | m_pcBinIf->xWritePCMCode(sample, sampleBits); |
---|
| 1070 | } |
---|
| 1071 | pPCMSample += width; |
---|
[313] | 1072 | } |
---|
| 1073 | } |
---|
| 1074 | |
---|
| 1075 | m_pcBinIf->resetBac(); |
---|
| 1076 | } |
---|
| 1077 | } |
---|
| 1078 | |
---|
| 1079 | Void TEncSbac::codeQtRootCbf( TComDataCU* pcCU, UInt uiAbsPartIdx ) |
---|
| 1080 | { |
---|
| 1081 | UInt uiCbf = pcCU->getQtRootCbf( uiAbsPartIdx ); |
---|
| 1082 | UInt uiCtx = 0; |
---|
| 1083 | m_pcBinIf->encodeBin( uiCbf , m_cCUQtRootCbfSCModel.get( 0, 0, uiCtx ) ); |
---|
| 1084 | DTRACE_CABAC_VL( g_nSymbolCounter++ ) |
---|
| 1085 | DTRACE_CABAC_T( "\tparseQtRootCbf()" ) |
---|
| 1086 | DTRACE_CABAC_T( "\tsymbol=" ) |
---|
| 1087 | DTRACE_CABAC_V( uiCbf ) |
---|
| 1088 | DTRACE_CABAC_T( "\tctx=" ) |
---|
| 1089 | DTRACE_CABAC_V( uiCtx ) |
---|
| 1090 | DTRACE_CABAC_T( "\tuiAbsPartIdx=" ) |
---|
| 1091 | DTRACE_CABAC_V( uiAbsPartIdx ) |
---|
| 1092 | DTRACE_CABAC_T( "\n" ) |
---|
| 1093 | } |
---|
| 1094 | |
---|
[1029] | 1095 | Void TEncSbac::codeQtCbfZero( TComTU & rTu, const ChannelType chType ) |
---|
[313] | 1096 | { |
---|
| 1097 | // this function is only used to estimate the bits when cbf is 0 |
---|
| 1098 | // and will never be called when writing the bistream. do not need to write log |
---|
| 1099 | UInt uiCbf = 0; |
---|
[1029] | 1100 | UInt uiCtx = rTu.getCU()->getCtxQtCbf( rTu, chType ); |
---|
| 1101 | |
---|
| 1102 | m_pcBinIf->encodeBin( uiCbf , m_cCUQtCbfSCModel.get( 0, chType, uiCtx ) ); |
---|
[313] | 1103 | } |
---|
| 1104 | |
---|
| 1105 | Void TEncSbac::codeQtRootCbfZero( TComDataCU* pcCU ) |
---|
| 1106 | { |
---|
| 1107 | // this function is only used to estimate the bits when cbf is 0 |
---|
| 1108 | // and will never be called when writing the bistream. do not need to write log |
---|
| 1109 | UInt uiCbf = 0; |
---|
| 1110 | UInt uiCtx = 0; |
---|
| 1111 | m_pcBinIf->encodeBin( uiCbf , m_cCUQtRootCbfSCModel.get( 0, 0, uiCtx ) ); |
---|
| 1112 | } |
---|
| 1113 | |
---|
| 1114 | /** Encode (X,Y) position of the last significant coefficient |
---|
[1260] | 1115 | * \param uiPosX X component of last coefficient |
---|
| 1116 | * \param uiPosY Y component of last coefficient |
---|
| 1117 | * \param width Block width |
---|
| 1118 | * \param height Block height |
---|
| 1119 | * \param component chroma component ID |
---|
| 1120 | * \param uiScanIdx scan type (zig-zag, hor, ver) |
---|
[313] | 1121 | * This method encodes the X and Y component within a block of the last significant coefficient. |
---|
| 1122 | */ |
---|
[1029] | 1123 | Void TEncSbac::codeLastSignificantXY( UInt uiPosX, UInt uiPosY, Int width, Int height, ComponentID component, UInt uiScanIdx ) |
---|
| 1124 | { |
---|
[313] | 1125 | // swap |
---|
| 1126 | if( uiScanIdx == SCAN_VER ) |
---|
| 1127 | { |
---|
| 1128 | swap( uiPosX, uiPosY ); |
---|
[1029] | 1129 | swap( width, height ); |
---|
[313] | 1130 | } |
---|
| 1131 | |
---|
| 1132 | UInt uiCtxLast; |
---|
| 1133 | UInt uiGroupIdxX = g_uiGroupIdx[ uiPosX ]; |
---|
| 1134 | UInt uiGroupIdxY = g_uiGroupIdx[ uiPosY ]; |
---|
| 1135 | |
---|
[1029] | 1136 | ContextModel *pCtxX = m_cCuCtxLastX.get( 0, toChannelType(component) ); |
---|
| 1137 | ContextModel *pCtxY = m_cCuCtxLastY.get( 0, toChannelType(component) ); |
---|
[313] | 1138 | |
---|
| 1139 | Int blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY; |
---|
[1029] | 1140 | getLastSignificantContextParameters(component, width, height, blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY); |
---|
| 1141 | |
---|
| 1142 | //------------------ |
---|
| 1143 | |
---|
[313] | 1144 | // posX |
---|
[1029] | 1145 | |
---|
[313] | 1146 | for( uiCtxLast = 0; uiCtxLast < uiGroupIdxX; uiCtxLast++ ) |
---|
| 1147 | { |
---|
[1029] | 1148 | m_pcBinIf->encodeBin( 1, *( pCtxX + blkSizeOffsetX + (uiCtxLast >>shiftX) ) ); |
---|
[313] | 1149 | } |
---|
| 1150 | if( uiGroupIdxX < g_uiGroupIdx[ width - 1 ]) |
---|
| 1151 | { |
---|
[1029] | 1152 | m_pcBinIf->encodeBin( 0, *( pCtxX + blkSizeOffsetX + (uiCtxLast >>shiftX) ) ); |
---|
[313] | 1153 | } |
---|
| 1154 | |
---|
| 1155 | // posY |
---|
[1029] | 1156 | |
---|
[313] | 1157 | for( uiCtxLast = 0; uiCtxLast < uiGroupIdxY; uiCtxLast++ ) |
---|
| 1158 | { |
---|
| 1159 | m_pcBinIf->encodeBin( 1, *( pCtxY + blkSizeOffsetY + (uiCtxLast >>shiftY) ) ); |
---|
| 1160 | } |
---|
| 1161 | if( uiGroupIdxY < g_uiGroupIdx[ height - 1 ]) |
---|
| 1162 | { |
---|
| 1163 | m_pcBinIf->encodeBin( 0, *( pCtxY + blkSizeOffsetY + (uiCtxLast >>shiftY) ) ); |
---|
| 1164 | } |
---|
[1029] | 1165 | |
---|
| 1166 | // EP-coded part |
---|
| 1167 | |
---|
[313] | 1168 | if ( uiGroupIdxX > 3 ) |
---|
[1029] | 1169 | { |
---|
[313] | 1170 | UInt uiCount = ( uiGroupIdxX - 2 ) >> 1; |
---|
| 1171 | uiPosX = uiPosX - g_uiMinInGroup[ uiGroupIdxX ]; |
---|
| 1172 | for (Int i = uiCount - 1 ; i >= 0; i-- ) |
---|
| 1173 | { |
---|
| 1174 | m_pcBinIf->encodeBinEP( ( uiPosX >> i ) & 1 ); |
---|
| 1175 | } |
---|
| 1176 | } |
---|
| 1177 | if ( uiGroupIdxY > 3 ) |
---|
[1029] | 1178 | { |
---|
[313] | 1179 | UInt uiCount = ( uiGroupIdxY - 2 ) >> 1; |
---|
| 1180 | uiPosY = uiPosY - g_uiMinInGroup[ uiGroupIdxY ]; |
---|
| 1181 | for ( Int i = uiCount - 1 ; i >= 0; i-- ) |
---|
| 1182 | { |
---|
| 1183 | m_pcBinIf->encodeBinEP( ( uiPosY >> i ) & 1 ); |
---|
| 1184 | } |
---|
| 1185 | } |
---|
| 1186 | } |
---|
| 1187 | |
---|
[1029] | 1188 | |
---|
| 1189 | Void TEncSbac::codeCoeffNxN( TComTU &rTu, TCoeff* pcCoef, const ComponentID compID ) |
---|
[313] | 1190 | { |
---|
[1029] | 1191 | TComDataCU* pcCU=rTu.getCU(); |
---|
| 1192 | const UInt uiAbsPartIdx=rTu.GetAbsPartIdxTU(compID); |
---|
| 1193 | const TComRectangle &tuRect=rTu.getRect(compID); |
---|
| 1194 | const UInt uiWidth=tuRect.width; |
---|
| 1195 | const UInt uiHeight=tuRect.height; |
---|
| 1196 | |
---|
[313] | 1197 | DTRACE_CABAC_VL( g_nSymbolCounter++ ) |
---|
| 1198 | DTRACE_CABAC_T( "\tparseCoeffNxN()\teType=" ) |
---|
[1029] | 1199 | DTRACE_CABAC_V( compID ) |
---|
[313] | 1200 | DTRACE_CABAC_T( "\twidth=" ) |
---|
| 1201 | DTRACE_CABAC_V( uiWidth ) |
---|
| 1202 | DTRACE_CABAC_T( "\theight=" ) |
---|
| 1203 | DTRACE_CABAC_V( uiHeight ) |
---|
| 1204 | DTRACE_CABAC_T( "\tdepth=" ) |
---|
[1029] | 1205 | // DTRACE_CABAC_V( rTu.GetTransformDepthTotalAdj(compID) ) |
---|
| 1206 | DTRACE_CABAC_V( rTu.GetTransformDepthTotal() ) |
---|
[313] | 1207 | DTRACE_CABAC_T( "\tabspartidx=" ) |
---|
| 1208 | DTRACE_CABAC_V( uiAbsPartIdx ) |
---|
| 1209 | DTRACE_CABAC_T( "\ttoCU-X=" ) |
---|
| 1210 | DTRACE_CABAC_V( pcCU->getCUPelX() ) |
---|
| 1211 | DTRACE_CABAC_T( "\ttoCU-Y=" ) |
---|
| 1212 | DTRACE_CABAC_V( pcCU->getCUPelY() ) |
---|
| 1213 | DTRACE_CABAC_T( "\tCU-addr=" ) |
---|
[1029] | 1214 | DTRACE_CABAC_V( pcCU->getCtuRsAddr() ) |
---|
[313] | 1215 | DTRACE_CABAC_T( "\tinCU-X=" ) |
---|
[1029] | 1216 | // DTRACE_CABAC_V( g_auiRasterToPelX[ g_auiZscanToRaster[uiAbsPartIdx] ] ) |
---|
| 1217 | DTRACE_CABAC_V( g_auiRasterToPelX[ g_auiZscanToRaster[rTu.GetAbsPartIdxTU(compID)] ] ) |
---|
[313] | 1218 | DTRACE_CABAC_T( "\tinCU-Y=" ) |
---|
[1029] | 1219 | // DTRACE_CABAC_V( g_auiRasterToPelY[ g_auiZscanToRaster[uiAbsPartIdx] ] ) |
---|
| 1220 | DTRACE_CABAC_V( g_auiRasterToPelY[ g_auiZscanToRaster[rTu.GetAbsPartIdxTU(compID)] ] ) |
---|
[313] | 1221 | DTRACE_CABAC_T( "\tpredmode=" ) |
---|
| 1222 | DTRACE_CABAC_V( pcCU->getPredictionMode( uiAbsPartIdx ) ) |
---|
| 1223 | DTRACE_CABAC_T( "\n" ) |
---|
| 1224 | |
---|
[1029] | 1225 | //-------------------------------------------------------------------------------------------------- |
---|
| 1226 | |
---|
[313] | 1227 | if( uiWidth > m_pcSlice->getSPS()->getMaxTrSize() ) |
---|
| 1228 | { |
---|
[1029] | 1229 | std::cerr << "ERROR: codeCoeffNxN was passed a TU with dimensions larger than the maximum allowed size" << std::endl; |
---|
| 1230 | assert(false); |
---|
| 1231 | exit(1); |
---|
[313] | 1232 | } |
---|
[1029] | 1233 | |
---|
[313] | 1234 | // compute number of significant coefficients |
---|
[1029] | 1235 | UInt uiNumSig = TEncEntropy::countNonZeroCoeffs(pcCoef, uiWidth * uiHeight); |
---|
| 1236 | |
---|
[313] | 1237 | if ( uiNumSig == 0 ) |
---|
| 1238 | { |
---|
[1029] | 1239 | std::cerr << "ERROR: codeCoeffNxN called for empty TU!" << std::endl; |
---|
| 1240 | assert(false); |
---|
| 1241 | exit(1); |
---|
[313] | 1242 | } |
---|
[1029] | 1243 | |
---|
| 1244 | //-------------------------------------------------------------------------------------------------- |
---|
| 1245 | |
---|
| 1246 | //set parameters |
---|
| 1247 | |
---|
| 1248 | const ChannelType chType = toChannelType(compID); |
---|
| 1249 | const UInt uiLog2BlockWidth = g_aucConvertToBit[ uiWidth ] + 2; |
---|
| 1250 | const UInt uiLog2BlockHeight = g_aucConvertToBit[ uiHeight ] + 2; |
---|
| 1251 | |
---|
| 1252 | const ChannelType channelType = toChannelType(compID); |
---|
| 1253 | const Bool extendedPrecision = pcCU->getSlice()->getSPS()->getUseExtendedPrecision(); |
---|
| 1254 | |
---|
| 1255 | const Bool alignCABACBeforeBypass = pcCU->getSlice()->getSPS()->getAlignCABACBeforeBypass(); |
---|
| 1256 | |
---|
[313] | 1257 | Bool beValid; |
---|
[1029] | 1258 | |
---|
[313] | 1259 | { |
---|
[1029] | 1260 | Int uiIntraMode = -1; |
---|
| 1261 | const Bool bIsLuma = isLuma(compID); |
---|
| 1262 | Int isIntra = pcCU->isIntra(uiAbsPartIdx) ? 1 : 0; |
---|
| 1263 | if ( isIntra ) |
---|
| 1264 | { |
---|
| 1265 | uiIntraMode = pcCU->getIntraDir( toChannelType(compID), uiAbsPartIdx ); |
---|
[313] | 1266 | |
---|
[1029] | 1267 | uiIntraMode = (uiIntraMode==DM_CHROMA_IDX && !bIsLuma) ? pcCU->getIntraDir(CHANNEL_TYPE_LUMA, getChromasCorrespondingPULumaIdx(uiAbsPartIdx, rTu.GetChromaFormat())) : uiIntraMode; |
---|
| 1268 | uiIntraMode = ((rTu.GetChromaFormat() == CHROMA_422) && !bIsLuma) ? g_chroma422IntraAngleMappingTable[uiIntraMode] : uiIntraMode; |
---|
| 1269 | } |
---|
[313] | 1270 | |
---|
[1029] | 1271 | Int transformSkip = pcCU->getTransformSkip( uiAbsPartIdx,compID) ? 1 : 0; |
---|
| 1272 | Bool rdpcm_lossy = ( transformSkip && isIntra && ( (uiIntraMode == HOR_IDX) || (uiIntraMode == VER_IDX) ) ) && pcCU->isRDPCMEnabled(uiAbsPartIdx); |
---|
| 1273 | |
---|
| 1274 | if ( (pcCU->getCUTransquantBypass(uiAbsPartIdx)) || rdpcm_lossy ) |
---|
[313] | 1275 | { |
---|
[1029] | 1276 | beValid = false; |
---|
| 1277 | if ( (!pcCU->isIntra(uiAbsPartIdx)) && pcCU->isRDPCMEnabled(uiAbsPartIdx)) |
---|
[1246] | 1278 | { |
---|
[1029] | 1279 | codeExplicitRdpcmMode( rTu, compID); |
---|
[1246] | 1280 | } |
---|
[313] | 1281 | } |
---|
[1029] | 1282 | else |
---|
[313] | 1283 | { |
---|
[1230] | 1284 | beValid = pcCU->getSlice()->getPPS()->getSignHideFlag(); |
---|
[313] | 1285 | } |
---|
| 1286 | } |
---|
| 1287 | |
---|
[1029] | 1288 | //-------------------------------------------------------------------------------------------------- |
---|
[313] | 1289 | |
---|
[1029] | 1290 | if(pcCU->getSlice()->getPPS()->getUseTransformSkip()) |
---|
| 1291 | { |
---|
| 1292 | codeTransformSkipFlags(rTu, compID); |
---|
| 1293 | if(pcCU->getTransformSkip(uiAbsPartIdx, compID) && !pcCU->isIntra(uiAbsPartIdx) && pcCU->isRDPCMEnabled(uiAbsPartIdx)) |
---|
[313] | 1294 | { |
---|
[1029] | 1295 | // This TU has coefficients and is transform skipped. Check whether is inter coded and if yes encode the explicit RDPCM mode |
---|
| 1296 | codeExplicitRdpcmMode( rTu, compID); |
---|
[313] | 1297 | |
---|
[1029] | 1298 | if(pcCU->getExplicitRdpcmMode(compID, uiAbsPartIdx) != RDPCM_OFF) |
---|
[313] | 1299 | { |
---|
[1029] | 1300 | // Sign data hiding is avoided for horizontal and vertical explicit RDPCM modes |
---|
| 1301 | beValid = false; |
---|
[313] | 1302 | } |
---|
[1029] | 1303 | } |
---|
| 1304 | } |
---|
[313] | 1305 | |
---|
[1029] | 1306 | //-------------------------------------------------------------------------------------------------- |
---|
| 1307 | |
---|
| 1308 | const Bool bUseGolombRiceParameterAdaptation = pcCU->getSlice()->getSPS()->getUseGolombRiceParameterAdaptation(); |
---|
| 1309 | UInt ¤tGolombRiceStatistic = m_golombRiceAdaptationStatistics[rTu.getGolombRiceStatisticsIndex(compID)]; |
---|
| 1310 | |
---|
| 1311 | //select scans |
---|
| 1312 | TUEntropyCodingParameters codingParameters; |
---|
| 1313 | getTUEntropyCodingParameters(codingParameters, rTu, compID); |
---|
| 1314 | |
---|
| 1315 | //----- encode significance map ----- |
---|
| 1316 | |
---|
| 1317 | // Find position of last coefficient |
---|
| 1318 | Int scanPosLast = -1; |
---|
| 1319 | Int posLast; |
---|
| 1320 | |
---|
| 1321 | |
---|
| 1322 | UInt uiSigCoeffGroupFlag[ MLS_GRP_NUM ]; |
---|
| 1323 | |
---|
| 1324 | memset( uiSigCoeffGroupFlag, 0, sizeof(UInt) * MLS_GRP_NUM ); |
---|
| 1325 | do |
---|
| 1326 | { |
---|
| 1327 | posLast = codingParameters.scan[ ++scanPosLast ]; |
---|
| 1328 | |
---|
| 1329 | if( pcCoef[ posLast ] != 0 ) |
---|
| 1330 | { |
---|
| 1331 | // get L1 sig map |
---|
| 1332 | UInt uiPosY = posLast >> uiLog2BlockWidth; |
---|
| 1333 | UInt uiPosX = posLast - ( uiPosY << uiLog2BlockWidth ); |
---|
| 1334 | |
---|
| 1335 | UInt uiBlkIdx = (codingParameters.widthInGroups * (uiPosY >> MLS_CG_LOG2_HEIGHT)) + (uiPosX >> MLS_CG_LOG2_WIDTH); |
---|
| 1336 | uiSigCoeffGroupFlag[ uiBlkIdx ] = 1; |
---|
| 1337 | |
---|
| 1338 | uiNumSig--; |
---|
[313] | 1339 | } |
---|
[1246] | 1340 | } while ( uiNumSig > 0 ); |
---|
[313] | 1341 | |
---|
| 1342 | // Code position of last coefficient |
---|
[1029] | 1343 | Int posLastY = posLast >> uiLog2BlockWidth; |
---|
| 1344 | Int posLastX = posLast - ( posLastY << uiLog2BlockWidth ); |
---|
| 1345 | codeLastSignificantXY(posLastX, posLastY, uiWidth, uiHeight, compID, codingParameters.scanType); |
---|
| 1346 | |
---|
[313] | 1347 | //===== code significance flag ===== |
---|
[1029] | 1348 | ContextModel * const baseCoeffGroupCtx = m_cCUSigCoeffGroupSCModel.get( 0, chType ); |
---|
| 1349 | ContextModel * const baseCtx = m_cCUSigSCModel.get( 0, 0 ) + getSignificanceMapContextOffset(compID); |
---|
[313] | 1350 | |
---|
[1029] | 1351 | const Int iLastScanSet = scanPosLast >> MLS_CG_SIZE; |
---|
[313] | 1352 | |
---|
[1029] | 1353 | UInt c1 = 1; |
---|
| 1354 | UInt uiGoRiceParam = 0; |
---|
| 1355 | Int iScanPosSig = scanPosLast; |
---|
[313] | 1356 | |
---|
| 1357 | for( Int iSubSet = iLastScanSet; iSubSet >= 0; iSubSet-- ) |
---|
| 1358 | { |
---|
| 1359 | Int numNonZero = 0; |
---|
[1029] | 1360 | Int iSubPos = iSubSet << MLS_CG_SIZE; |
---|
| 1361 | uiGoRiceParam = currentGolombRiceStatistic / RExt__GOLOMB_RICE_INCREMENT_DIVISOR; |
---|
| 1362 | Bool updateGolombRiceStatistics = bUseGolombRiceParameterAdaptation; //leave the statistics at 0 when not using the adaptation system |
---|
[313] | 1363 | UInt coeffSigns = 0; |
---|
| 1364 | |
---|
[1029] | 1365 | Int absCoeff[1 << MLS_CG_SIZE]; |
---|
[313] | 1366 | |
---|
[1029] | 1367 | Int lastNZPosInCG = -1; |
---|
| 1368 | Int firstNZPosInCG = 1 << MLS_CG_SIZE; |
---|
| 1369 | |
---|
| 1370 | Bool escapeDataPresentInGroup = false; |
---|
| 1371 | |
---|
[313] | 1372 | if( iScanPosSig == scanPosLast ) |
---|
| 1373 | { |
---|
[1029] | 1374 | absCoeff[ 0 ] = Int(abs( pcCoef[ posLast ] )); |
---|
[313] | 1375 | coeffSigns = ( pcCoef[ posLast ] < 0 ); |
---|
| 1376 | numNonZero = 1; |
---|
| 1377 | lastNZPosInCG = iScanPosSig; |
---|
| 1378 | firstNZPosInCG = iScanPosSig; |
---|
| 1379 | iScanPosSig--; |
---|
| 1380 | } |
---|
| 1381 | |
---|
[1029] | 1382 | // encode significant_coeffgroup_flag |
---|
| 1383 | Int iCGBlkPos = codingParameters.scanCG[ iSubSet ]; |
---|
| 1384 | Int iCGPosY = iCGBlkPos / codingParameters.widthInGroups; |
---|
| 1385 | Int iCGPosX = iCGBlkPos - (iCGPosY * codingParameters.widthInGroups); |
---|
| 1386 | |
---|
| 1387 | if( iSubSet == iLastScanSet || iSubSet == 0) |
---|
| 1388 | { |
---|
| 1389 | uiSigCoeffGroupFlag[ iCGBlkPos ] = 1; |
---|
| 1390 | } |
---|
| 1391 | else |
---|
| 1392 | { |
---|
| 1393 | UInt uiSigCoeffGroup = (uiSigCoeffGroupFlag[ iCGBlkPos ] != 0); |
---|
| 1394 | UInt uiCtxSig = TComTrQuant::getSigCoeffGroupCtxInc( uiSigCoeffGroupFlag, iCGPosX, iCGPosY, codingParameters.widthInGroups, codingParameters.heightInGroups ); |
---|
| 1395 | m_pcBinIf->encodeBin( uiSigCoeffGroup, baseCoeffGroupCtx[ uiCtxSig ] ); |
---|
| 1396 | } |
---|
| 1397 | |
---|
| 1398 | // encode significant_coeff_flag |
---|
| 1399 | if( uiSigCoeffGroupFlag[ iCGBlkPos ] ) |
---|
| 1400 | { |
---|
| 1401 | const Int patternSigCtx = TComTrQuant::calcPatternSigCtx(uiSigCoeffGroupFlag, iCGPosX, iCGPosY, codingParameters.widthInGroups, codingParameters.heightInGroups); |
---|
| 1402 | |
---|
| 1403 | UInt uiBlkPos, uiSig, uiCtxSig; |
---|
| 1404 | for( ; iScanPosSig >= iSubPos; iScanPosSig-- ) |
---|
[313] | 1405 | { |
---|
[1029] | 1406 | uiBlkPos = codingParameters.scan[ iScanPosSig ]; |
---|
| 1407 | uiSig = (pcCoef[ uiBlkPos ] != 0); |
---|
| 1408 | if( iScanPosSig > iSubPos || iSubSet == 0 || numNonZero ) |
---|
[313] | 1409 | { |
---|
[1029] | 1410 | uiCtxSig = TComTrQuant::getSigCtxInc( patternSigCtx, codingParameters, iScanPosSig, uiLog2BlockWidth, uiLog2BlockHeight, chType ); |
---|
| 1411 | m_pcBinIf->encodeBin( uiSig, baseCtx[ uiCtxSig ] ); |
---|
| 1412 | } |
---|
| 1413 | if( uiSig ) |
---|
| 1414 | { |
---|
| 1415 | absCoeff[ numNonZero ] = Int(abs( pcCoef[ uiBlkPos ] )); |
---|
| 1416 | coeffSigns = 2 * coeffSigns + ( pcCoef[ uiBlkPos ] < 0 ); |
---|
| 1417 | numNonZero++; |
---|
| 1418 | if( lastNZPosInCG == -1 ) |
---|
[313] | 1419 | { |
---|
[1029] | 1420 | lastNZPosInCG = iScanPosSig; |
---|
[313] | 1421 | } |
---|
[1029] | 1422 | firstNZPosInCG = iScanPosSig; |
---|
[313] | 1423 | } |
---|
| 1424 | } |
---|
[1029] | 1425 | } |
---|
| 1426 | else |
---|
| 1427 | { |
---|
| 1428 | iScanPosSig = iSubPos - 1; |
---|
| 1429 | } |
---|
[313] | 1430 | |
---|
| 1431 | if( numNonZero > 0 ) |
---|
| 1432 | { |
---|
| 1433 | Bool signHidden = ( lastNZPosInCG - firstNZPosInCG >= SBH_THRESHOLD ); |
---|
[1029] | 1434 | |
---|
| 1435 | const UInt uiCtxSet = getContextSetIndex(compID, iSubSet, (c1 == 0)); |
---|
[313] | 1436 | c1 = 1; |
---|
[1029] | 1437 | |
---|
| 1438 | ContextModel *baseCtxMod = m_cCUOneSCModel.get( 0, 0 ) + (NUM_ONE_FLAG_CTX_PER_SET * uiCtxSet); |
---|
| 1439 | |
---|
[313] | 1440 | Int numC1Flag = min(numNonZero, C1FLAG_NUMBER); |
---|
| 1441 | Int firstC2FlagIdx = -1; |
---|
| 1442 | for( Int idx = 0; idx < numC1Flag; idx++ ) |
---|
| 1443 | { |
---|
| 1444 | UInt uiSymbol = absCoeff[ idx ] > 1; |
---|
| 1445 | m_pcBinIf->encodeBin( uiSymbol, baseCtxMod[c1] ); |
---|
| 1446 | if( uiSymbol ) |
---|
| 1447 | { |
---|
| 1448 | c1 = 0; |
---|
| 1449 | |
---|
| 1450 | if (firstC2FlagIdx == -1) |
---|
| 1451 | { |
---|
| 1452 | firstC2FlagIdx = idx; |
---|
| 1453 | } |
---|
[1029] | 1454 | else //if a greater-than-one has been encountered already this group |
---|
| 1455 | { |
---|
| 1456 | escapeDataPresentInGroup = true; |
---|
| 1457 | } |
---|
[313] | 1458 | } |
---|
| 1459 | else if( (c1 < 3) && (c1 > 0) ) |
---|
| 1460 | { |
---|
| 1461 | c1++; |
---|
| 1462 | } |
---|
| 1463 | } |
---|
[1029] | 1464 | |
---|
[313] | 1465 | if (c1 == 0) |
---|
| 1466 | { |
---|
[1029] | 1467 | baseCtxMod = m_cCUAbsSCModel.get( 0, 0 ) + (NUM_ABS_FLAG_CTX_PER_SET * uiCtxSet); |
---|
[313] | 1468 | if ( firstC2FlagIdx != -1) |
---|
| 1469 | { |
---|
| 1470 | UInt symbol = absCoeff[ firstC2FlagIdx ] > 2; |
---|
| 1471 | m_pcBinIf->encodeBin( symbol, baseCtxMod[0] ); |
---|
[1029] | 1472 | if (symbol != 0) |
---|
| 1473 | { |
---|
| 1474 | escapeDataPresentInGroup = true; |
---|
| 1475 | } |
---|
[313] | 1476 | } |
---|
| 1477 | } |
---|
[1029] | 1478 | |
---|
| 1479 | escapeDataPresentInGroup = escapeDataPresentInGroup || (numNonZero > C1FLAG_NUMBER); |
---|
| 1480 | |
---|
| 1481 | if (escapeDataPresentInGroup && alignCABACBeforeBypass) |
---|
| 1482 | { |
---|
| 1483 | m_pcBinIf->align(); |
---|
| 1484 | } |
---|
| 1485 | |
---|
[313] | 1486 | if( beValid && signHidden ) |
---|
| 1487 | { |
---|
| 1488 | m_pcBinIf->encodeBinsEP( (coeffSigns >> 1), numNonZero-1 ); |
---|
| 1489 | } |
---|
| 1490 | else |
---|
| 1491 | { |
---|
| 1492 | m_pcBinIf->encodeBinsEP( coeffSigns, numNonZero ); |
---|
| 1493 | } |
---|
[1029] | 1494 | |
---|
| 1495 | Int iFirstCoeff2 = 1; |
---|
| 1496 | if (escapeDataPresentInGroup) |
---|
[313] | 1497 | { |
---|
| 1498 | for ( Int idx = 0; idx < numNonZero; idx++ ) |
---|
| 1499 | { |
---|
| 1500 | UInt baseLevel = (idx < C1FLAG_NUMBER)? (2 + iFirstCoeff2 ) : 1; |
---|
| 1501 | |
---|
| 1502 | if( absCoeff[ idx ] >= baseLevel) |
---|
| 1503 | { |
---|
[1029] | 1504 | const UInt escapeCodeValue = absCoeff[idx] - baseLevel; |
---|
| 1505 | |
---|
| 1506 | xWriteCoefRemainExGolomb( escapeCodeValue, uiGoRiceParam, extendedPrecision, channelType ); |
---|
| 1507 | |
---|
| 1508 | if (absCoeff[idx] > (3 << uiGoRiceParam)) |
---|
[313] | 1509 | { |
---|
[1029] | 1510 | uiGoRiceParam = bUseGolombRiceParameterAdaptation ? (uiGoRiceParam + 1) : (std::min<UInt>((uiGoRiceParam + 1), 4)); |
---|
[313] | 1511 | } |
---|
[1029] | 1512 | |
---|
| 1513 | if (updateGolombRiceStatistics) |
---|
| 1514 | { |
---|
| 1515 | const UInt initialGolombRiceParameter = currentGolombRiceStatistic / RExt__GOLOMB_RICE_INCREMENT_DIVISOR; |
---|
| 1516 | |
---|
| 1517 | if (escapeCodeValue >= (3 << initialGolombRiceParameter)) |
---|
| 1518 | { |
---|
| 1519 | currentGolombRiceStatistic++; |
---|
| 1520 | } |
---|
| 1521 | else if (((escapeCodeValue * 2) < (1 << initialGolombRiceParameter)) && (currentGolombRiceStatistic > 0)) |
---|
| 1522 | { |
---|
| 1523 | currentGolombRiceStatistic--; |
---|
| 1524 | } |
---|
| 1525 | |
---|
| 1526 | updateGolombRiceStatistics = false; |
---|
| 1527 | } |
---|
[313] | 1528 | } |
---|
[1029] | 1529 | |
---|
| 1530 | if(absCoeff[ idx ] >= 2) |
---|
[313] | 1531 | { |
---|
| 1532 | iFirstCoeff2 = 0; |
---|
| 1533 | } |
---|
[1029] | 1534 | } |
---|
[313] | 1535 | } |
---|
| 1536 | } |
---|
| 1537 | } |
---|
[1029] | 1538 | #if ENVIRONMENT_VARIABLE_DEBUG_AND_TEST |
---|
| 1539 | printSBACCoeffData(posLastX, posLastY, uiWidth, uiHeight, compID, uiAbsPartIdx, codingParameters.scanType, pcCoef, g_bFinalEncode); |
---|
| 1540 | #endif |
---|
[313] | 1541 | |
---|
| 1542 | return; |
---|
| 1543 | } |
---|
| 1544 | |
---|
| 1545 | /** code SAO offset sign |
---|
| 1546 | * \param code sign value |
---|
| 1547 | */ |
---|
| 1548 | Void TEncSbac::codeSAOSign( UInt code ) |
---|
| 1549 | { |
---|
| 1550 | m_pcBinIf->encodeBinEP( code ); |
---|
| 1551 | } |
---|
| 1552 | |
---|
| 1553 | Void TEncSbac::codeSaoMaxUvlc ( UInt code, UInt maxSymbol ) |
---|
| 1554 | { |
---|
| 1555 | if (maxSymbol == 0) |
---|
| 1556 | { |
---|
| 1557 | return; |
---|
| 1558 | } |
---|
| 1559 | |
---|
| 1560 | Int i; |
---|
| 1561 | Bool bCodeLast = ( maxSymbol > code ); |
---|
| 1562 | |
---|
| 1563 | if ( code == 0 ) |
---|
| 1564 | { |
---|
| 1565 | m_pcBinIf->encodeBinEP( 0 ); |
---|
| 1566 | } |
---|
| 1567 | else |
---|
| 1568 | { |
---|
| 1569 | m_pcBinIf->encodeBinEP( 1 ); |
---|
| 1570 | for ( i=0; i<code-1; i++ ) |
---|
| 1571 | { |
---|
| 1572 | m_pcBinIf->encodeBinEP( 1 ); |
---|
| 1573 | } |
---|
| 1574 | if( bCodeLast ) |
---|
| 1575 | { |
---|
| 1576 | m_pcBinIf->encodeBinEP( 0 ); |
---|
| 1577 | } |
---|
| 1578 | } |
---|
| 1579 | } |
---|
| 1580 | |
---|
[1029] | 1581 | /** Code SAO EO class or BO band position |
---|
[313] | 1582 | */ |
---|
| 1583 | Void TEncSbac::codeSaoUflc ( UInt uiLength, UInt uiCode ) |
---|
| 1584 | { |
---|
[1029] | 1585 | m_pcBinIf->encodeBinsEP ( uiCode, uiLength ); |
---|
[313] | 1586 | } |
---|
[1029] | 1587 | |
---|
[313] | 1588 | /** Code SAO merge flags |
---|
| 1589 | */ |
---|
| 1590 | Void TEncSbac::codeSaoMerge ( UInt uiCode ) |
---|
| 1591 | { |
---|
[1029] | 1592 | m_pcBinIf->encodeBin(((uiCode == 0) ? 0 : 1), m_cSaoMergeSCModel.get( 0, 0, 0 )); |
---|
[313] | 1593 | } |
---|
[1029] | 1594 | |
---|
| 1595 | /** Code SAO type index |
---|
[313] | 1596 | */ |
---|
| 1597 | Void TEncSbac::codeSaoTypeIdx ( UInt uiCode) |
---|
| 1598 | { |
---|
| 1599 | if (uiCode == 0) |
---|
| 1600 | { |
---|
| 1601 | m_pcBinIf->encodeBin( 0, m_cSaoTypeIdxSCModel.get( 0, 0, 0 ) ); |
---|
| 1602 | } |
---|
| 1603 | else |
---|
| 1604 | { |
---|
| 1605 | m_pcBinIf->encodeBin( 1, m_cSaoTypeIdxSCModel.get( 0, 0, 0 ) ); |
---|
[540] | 1606 | m_pcBinIf->encodeBinEP( uiCode == 1 ? 0 : 1 ); |
---|
[313] | 1607 | } |
---|
| 1608 | } |
---|
[1029] | 1609 | #if SVC_EXTENSION |
---|
| 1610 | Void TEncSbac::codeSAOOffsetParam(ComponentID compIdx, SAOOffset& ctbParam, Bool sliceEnabled, UInt* saoMaxOffsetQVal) |
---|
| 1611 | #else |
---|
| 1612 | Void TEncSbac::codeSAOOffsetParam(ComponentID compIdx, SAOOffset& ctbParam, Bool sliceEnabled) |
---|
| 1613 | #endif |
---|
| 1614 | { |
---|
| 1615 | UInt uiSymbol; |
---|
| 1616 | if(!sliceEnabled) |
---|
| 1617 | { |
---|
| 1618 | assert(ctbParam.modeIdc == SAO_MODE_OFF); |
---|
| 1619 | return; |
---|
| 1620 | } |
---|
| 1621 | const Bool bIsFirstCompOfChType = (getFirstComponentOfChannel(toChannelType(compIdx)) == compIdx); |
---|
| 1622 | |
---|
| 1623 | //type |
---|
| 1624 | if(bIsFirstCompOfChType) |
---|
| 1625 | { |
---|
| 1626 | //sao_type_idx_luma or sao_type_idx_chroma |
---|
| 1627 | if(ctbParam.modeIdc == SAO_MODE_OFF) |
---|
| 1628 | { |
---|
| 1629 | uiSymbol =0; |
---|
| 1630 | } |
---|
| 1631 | else if(ctbParam.typeIdc == SAO_TYPE_BO) //BO |
---|
| 1632 | { |
---|
| 1633 | uiSymbol = 1; |
---|
| 1634 | } |
---|
| 1635 | else |
---|
| 1636 | { |
---|
| 1637 | assert(ctbParam.typeIdc < SAO_TYPE_START_BO); //EO |
---|
| 1638 | uiSymbol = 2; |
---|
| 1639 | } |
---|
| 1640 | codeSaoTypeIdx(uiSymbol); |
---|
| 1641 | } |
---|
| 1642 | |
---|
| 1643 | if(ctbParam.modeIdc == SAO_MODE_NEW) |
---|
| 1644 | { |
---|
| 1645 | Int numClasses = (ctbParam.typeIdc == SAO_TYPE_BO)?4:NUM_SAO_EO_CLASSES; |
---|
| 1646 | Int offset[4]; |
---|
| 1647 | Int k=0; |
---|
| 1648 | for(Int i=0; i< numClasses; i++) |
---|
| 1649 | { |
---|
| 1650 | if(ctbParam.typeIdc != SAO_TYPE_BO && i == SAO_CLASS_EO_PLAIN) |
---|
| 1651 | { |
---|
| 1652 | continue; |
---|
| 1653 | } |
---|
| 1654 | Int classIdx = (ctbParam.typeIdc == SAO_TYPE_BO)?( (ctbParam.typeAuxInfo+i)% NUM_SAO_BO_CLASSES ):i; |
---|
| 1655 | offset[k] = ctbParam.offset[classIdx]; |
---|
| 1656 | k++; |
---|
| 1657 | } |
---|
| 1658 | |
---|
| 1659 | for(Int i=0; i< 4; i++) |
---|
| 1660 | { |
---|
| 1661 | #if SVC_EXTENSION |
---|
| 1662 | codeSaoMaxUvlc((offset[i]<0)?(-offset[i]):(offset[i]), saoMaxOffsetQVal[compIdx] ); //sao_offset_abs |
---|
| 1663 | #else |
---|
| 1664 | codeSaoMaxUvlc((offset[i]<0)?(-offset[i]):(offset[i]), g_saoMaxOffsetQVal[compIdx] ); //sao_offset_abs |
---|
| 1665 | #endif |
---|
| 1666 | } |
---|
| 1667 | |
---|
| 1668 | |
---|
| 1669 | if(ctbParam.typeIdc == SAO_TYPE_BO) |
---|
| 1670 | { |
---|
| 1671 | for(Int i=0; i< 4; i++) |
---|
| 1672 | { |
---|
| 1673 | if(offset[i] != 0) |
---|
| 1674 | { |
---|
| 1675 | codeSAOSign((offset[i]< 0)?1:0); |
---|
| 1676 | } |
---|
| 1677 | } |
---|
| 1678 | |
---|
| 1679 | codeSaoUflc(NUM_SAO_BO_CLASSES_LOG2, ctbParam.typeAuxInfo ); //sao_band_position |
---|
| 1680 | } |
---|
| 1681 | else //EO |
---|
| 1682 | { |
---|
| 1683 | if(bIsFirstCompOfChType) |
---|
| 1684 | { |
---|
| 1685 | assert(ctbParam.typeIdc - SAO_TYPE_START_EO >=0); |
---|
| 1686 | codeSaoUflc(NUM_SAO_EO_TYPES_LOG2, ctbParam.typeIdc - SAO_TYPE_START_EO ); //sao_eo_class_luma or sao_eo_class_chroma |
---|
| 1687 | } |
---|
| 1688 | } |
---|
| 1689 | |
---|
| 1690 | } |
---|
| 1691 | } |
---|
| 1692 | |
---|
| 1693 | |
---|
| 1694 | Void TEncSbac::codeSAOBlkParam(SAOBlkParam& saoBlkParam |
---|
| 1695 | #if SVC_EXTENSION |
---|
| 1696 | , UInt* saoMaxOffsetQVal |
---|
| 1697 | #endif |
---|
| 1698 | , Bool* sliceEnabled |
---|
| 1699 | , Bool leftMergeAvail |
---|
| 1700 | , Bool aboveMergeAvail |
---|
| 1701 | , Bool onlyEstMergeInfo // = false |
---|
| 1702 | ) |
---|
| 1703 | { |
---|
| 1704 | |
---|
| 1705 | Bool isLeftMerge = false; |
---|
| 1706 | Bool isAboveMerge= false; |
---|
| 1707 | |
---|
| 1708 | if(leftMergeAvail) |
---|
| 1709 | { |
---|
| 1710 | isLeftMerge = ((saoBlkParam[COMPONENT_Y].modeIdc == SAO_MODE_MERGE) && (saoBlkParam[COMPONENT_Y].typeIdc == SAO_MERGE_LEFT)); |
---|
| 1711 | codeSaoMerge( isLeftMerge?1:0 ); //sao_merge_left_flag |
---|
| 1712 | } |
---|
| 1713 | |
---|
| 1714 | if( aboveMergeAvail && !isLeftMerge) |
---|
| 1715 | { |
---|
| 1716 | isAboveMerge = ((saoBlkParam[COMPONENT_Y].modeIdc == SAO_MODE_MERGE) && (saoBlkParam[COMPONENT_Y].typeIdc == SAO_MERGE_ABOVE)); |
---|
| 1717 | codeSaoMerge( isAboveMerge?1:0 ); //sao_merge_left_flag |
---|
| 1718 | } |
---|
| 1719 | |
---|
| 1720 | if(onlyEstMergeInfo) |
---|
| 1721 | { |
---|
| 1722 | return; //only for RDO |
---|
| 1723 | } |
---|
| 1724 | |
---|
| 1725 | if(!isLeftMerge && !isAboveMerge) //not merge mode |
---|
| 1726 | { |
---|
| 1727 | for(Int compIdx=0; compIdx < MAX_NUM_COMPONENT; compIdx++) |
---|
| 1728 | { |
---|
| 1729 | #if SVC_EXTENSION |
---|
| 1730 | codeSAOOffsetParam(ComponentID(compIdx), saoBlkParam[compIdx], sliceEnabled[compIdx], saoMaxOffsetQVal); |
---|
| 1731 | #else |
---|
| 1732 | codeSAOOffsetParam(ComponentID(compIdx), saoBlkParam[compIdx], sliceEnabled[compIdx]); |
---|
| 1733 | #endif |
---|
| 1734 | } |
---|
| 1735 | } |
---|
| 1736 | } |
---|
| 1737 | |
---|
[313] | 1738 | /*! |
---|
| 1739 | **************************************************************************** |
---|
| 1740 | * \brief |
---|
| 1741 | * estimate bit cost for CBP, significant map and significant coefficients |
---|
| 1742 | **************************************************************************** |
---|
| 1743 | */ |
---|
[1029] | 1744 | Void TEncSbac::estBit( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType ) |
---|
[313] | 1745 | { |
---|
| 1746 | estCBFBit( pcEstBitsSbac ); |
---|
| 1747 | |
---|
[1029] | 1748 | estSignificantCoeffGroupMapBit( pcEstBitsSbac, chType ); |
---|
| 1749 | |
---|
[313] | 1750 | // encode significance map |
---|
[1029] | 1751 | estSignificantMapBit( pcEstBitsSbac, width, height, chType ); |
---|
| 1752 | |
---|
| 1753 | // encode last significant position |
---|
| 1754 | estLastSignificantPositionBit( pcEstBitsSbac, width, height, chType ); |
---|
| 1755 | |
---|
[313] | 1756 | // encode significant coefficients |
---|
[1029] | 1757 | estSignificantCoefficientsBit( pcEstBitsSbac, chType ); |
---|
| 1758 | |
---|
| 1759 | memcpy(pcEstBitsSbac->golombRiceAdaptationStatistics, m_golombRiceAdaptationStatistics, (sizeof(UInt) * RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS)); |
---|
[313] | 1760 | } |
---|
| 1761 | |
---|
| 1762 | /*! |
---|
| 1763 | **************************************************************************** |
---|
| 1764 | * \brief |
---|
| 1765 | * estimate bit cost for each CBP bit |
---|
| 1766 | **************************************************************************** |
---|
| 1767 | */ |
---|
| 1768 | Void TEncSbac::estCBFBit( estBitsSbacStruct* pcEstBitsSbac ) |
---|
| 1769 | { |
---|
| 1770 | ContextModel *pCtx = m_cCUQtCbfSCModel.get( 0 ); |
---|
| 1771 | |
---|
[1029] | 1772 | for( UInt uiCtxInc = 0; uiCtxInc < (NUM_QT_CBF_CTX_SETS * NUM_QT_CBF_CTX_PER_SET); uiCtxInc++ ) |
---|
[313] | 1773 | { |
---|
| 1774 | pcEstBitsSbac->blockCbpBits[ uiCtxInc ][ 0 ] = pCtx[ uiCtxInc ].getEntropyBits( 0 ); |
---|
| 1775 | pcEstBitsSbac->blockCbpBits[ uiCtxInc ][ 1 ] = pCtx[ uiCtxInc ].getEntropyBits( 1 ); |
---|
| 1776 | } |
---|
| 1777 | |
---|
| 1778 | pCtx = m_cCUQtRootCbfSCModel.get( 0 ); |
---|
[1029] | 1779 | |
---|
[313] | 1780 | for( UInt uiCtxInc = 0; uiCtxInc < 4; uiCtxInc++ ) |
---|
| 1781 | { |
---|
| 1782 | pcEstBitsSbac->blockRootCbpBits[ uiCtxInc ][ 0 ] = pCtx[ uiCtxInc ].getEntropyBits( 0 ); |
---|
| 1783 | pcEstBitsSbac->blockRootCbpBits[ uiCtxInc ][ 1 ] = pCtx[ uiCtxInc ].getEntropyBits( 1 ); |
---|
| 1784 | } |
---|
| 1785 | } |
---|
| 1786 | |
---|
| 1787 | |
---|
| 1788 | /*! |
---|
| 1789 | **************************************************************************** |
---|
| 1790 | * \brief |
---|
| 1791 | * estimate SAMBAC bit cost for significant coefficient group map |
---|
| 1792 | **************************************************************************** |
---|
| 1793 | */ |
---|
[1029] | 1794 | Void TEncSbac::estSignificantCoeffGroupMapBit( estBitsSbacStruct* pcEstBitsSbac, ChannelType chType ) |
---|
[313] | 1795 | { |
---|
| 1796 | Int firstCtx = 0, numCtx = NUM_SIG_CG_FLAG_CTX; |
---|
| 1797 | |
---|
| 1798 | for ( Int ctxIdx = firstCtx; ctxIdx < firstCtx + numCtx; ctxIdx++ ) |
---|
| 1799 | { |
---|
| 1800 | for( UInt uiBin = 0; uiBin < 2; uiBin++ ) |
---|
| 1801 | { |
---|
[1029] | 1802 | pcEstBitsSbac->significantCoeffGroupBits[ ctxIdx ][ uiBin ] = m_cCUSigCoeffGroupSCModel.get( 0, chType, ctxIdx ).getEntropyBits( uiBin ); |
---|
[313] | 1803 | } |
---|
| 1804 | } |
---|
| 1805 | } |
---|
| 1806 | |
---|
| 1807 | |
---|
| 1808 | /*! |
---|
| 1809 | **************************************************************************** |
---|
| 1810 | * \brief |
---|
| 1811 | * estimate SAMBAC bit cost for significant coefficient map |
---|
| 1812 | **************************************************************************** |
---|
| 1813 | */ |
---|
[1029] | 1814 | Void TEncSbac::estSignificantMapBit( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType ) |
---|
[313] | 1815 | { |
---|
[1029] | 1816 | //-------------------------------------------------------------------------------------------------- |
---|
| 1817 | |
---|
| 1818 | //set up the number of channels and context variables |
---|
| 1819 | |
---|
| 1820 | const UInt firstComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb)); |
---|
| 1821 | const UInt lastComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb)); |
---|
| 1822 | |
---|
| 1823 | //---------------------------------------------------------- |
---|
| 1824 | |
---|
| 1825 | Int firstCtx = MAX_INT; |
---|
| 1826 | Int numCtx = MAX_INT; |
---|
| 1827 | |
---|
| 1828 | if ((width == 4) && (height == 4)) |
---|
[313] | 1829 | { |
---|
[1029] | 1830 | firstCtx = significanceMapContextSetStart[chType][CONTEXT_TYPE_4x4]; |
---|
| 1831 | numCtx = significanceMapContextSetSize [chType][CONTEXT_TYPE_4x4]; |
---|
[313] | 1832 | } |
---|
[1029] | 1833 | else if ((width == 8) && (height == 8)) |
---|
[313] | 1834 | { |
---|
[1029] | 1835 | firstCtx = significanceMapContextSetStart[chType][CONTEXT_TYPE_8x8]; |
---|
| 1836 | numCtx = significanceMapContextSetSize [chType][CONTEXT_TYPE_8x8]; |
---|
[313] | 1837 | } |
---|
[1029] | 1838 | else |
---|
[313] | 1839 | { |
---|
[1029] | 1840 | firstCtx = significanceMapContextSetStart[chType][CONTEXT_TYPE_NxN]; |
---|
| 1841 | numCtx = significanceMapContextSetSize [chType][CONTEXT_TYPE_NxN]; |
---|
| 1842 | } |
---|
[313] | 1843 | |
---|
[1029] | 1844 | //-------------------------------------------------------------------------------------------------- |
---|
| 1845 | |
---|
| 1846 | //fill the data for the significace map |
---|
| 1847 | |
---|
| 1848 | for (UInt component = firstComponent; component <= lastComponent; component++) |
---|
| 1849 | { |
---|
| 1850 | const UInt contextOffset = getSignificanceMapContextOffset(ComponentID(component)); |
---|
| 1851 | |
---|
| 1852 | if (firstCtx > 0) |
---|
[313] | 1853 | { |
---|
[1029] | 1854 | for( UInt bin = 0; bin < 2; bin++ ) //always get the DC |
---|
[313] | 1855 | { |
---|
[1029] | 1856 | pcEstBitsSbac->significantBits[ contextOffset ][ bin ] = m_cCUSigSCModel.get( 0, 0, contextOffset ).getEntropyBits( bin ); |
---|
[313] | 1857 | } |
---|
| 1858 | } |
---|
[1029] | 1859 | |
---|
| 1860 | // This could be made optional, but would require this function to have knowledge of whether the |
---|
| 1861 | // TU is transform-skipped or transquant-bypassed and whether the SPS flag is set |
---|
[313] | 1862 | for( UInt bin = 0; bin < 2; bin++ ) |
---|
| 1863 | { |
---|
[1029] | 1864 | const Int ctxIdx = significanceMapContextSetStart[chType][CONTEXT_TYPE_SINGLE]; |
---|
| 1865 | pcEstBitsSbac->significantBits[ contextOffset + ctxIdx ][ bin ] = m_cCUSigSCModel.get( 0, 0, (contextOffset + ctxIdx) ).getEntropyBits( bin ); |
---|
[313] | 1866 | } |
---|
[1029] | 1867 | |
---|
[313] | 1868 | for ( Int ctxIdx = firstCtx; ctxIdx < firstCtx + numCtx; ctxIdx++ ) |
---|
| 1869 | { |
---|
| 1870 | for( UInt uiBin = 0; uiBin < 2; uiBin++ ) |
---|
| 1871 | { |
---|
[1029] | 1872 | pcEstBitsSbac->significantBits[ contextOffset + ctxIdx ][ uiBin ] = m_cCUSigSCModel.get( 0, 0, (contextOffset + ctxIdx) ).getEntropyBits( uiBin ); |
---|
[313] | 1873 | } |
---|
| 1874 | } |
---|
| 1875 | } |
---|
| 1876 | |
---|
[1029] | 1877 | //-------------------------------------------------------------------------------------------------- |
---|
[313] | 1878 | } |
---|
| 1879 | |
---|
[1029] | 1880 | |
---|
[313] | 1881 | /*! |
---|
| 1882 | **************************************************************************** |
---|
| 1883 | * \brief |
---|
| 1884 | * estimate bit cost of significant coefficient |
---|
| 1885 | **************************************************************************** |
---|
| 1886 | */ |
---|
[1029] | 1887 | |
---|
| 1888 | Void TEncSbac::estLastSignificantPositionBit( estBitsSbacStruct* pcEstBitsSbac, Int width, Int height, ChannelType chType ) |
---|
[313] | 1889 | { |
---|
[1029] | 1890 | //--------------------------------------------------------------------------------------------------. |
---|
| 1891 | |
---|
| 1892 | //set up the number of channels |
---|
| 1893 | |
---|
| 1894 | const UInt firstComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb)); |
---|
| 1895 | const UInt lastComponent = ((isLuma(chType)) ? (COMPONENT_Y) : (COMPONENT_Cb)); |
---|
| 1896 | |
---|
| 1897 | //-------------------------------------------------------------------------------------------------- |
---|
| 1898 | |
---|
| 1899 | //fill the data for the last-significant-coefficient position |
---|
| 1900 | |
---|
| 1901 | for (UInt componentIndex = firstComponent; componentIndex <= lastComponent; componentIndex++) |
---|
[313] | 1902 | { |
---|
[1029] | 1903 | const ComponentID component = ComponentID(componentIndex); |
---|
[313] | 1904 | |
---|
[1029] | 1905 | Int iBitsX = 0, iBitsY = 0; |
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[313] | 1906 | |
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[1029] | 1907 | Int blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY; |
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| 1908 | getLastSignificantContextParameters(ComponentID(component), width, height, blkSizeOffsetX, blkSizeOffsetY, shiftX, shiftY); |
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| 1909 | |
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| 1910 | Int ctx; |
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| 1911 | |
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| 1912 | const ChannelType channelType = toChannelType(ComponentID(component)); |
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| 1913 | |
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| 1914 | ContextModel *const pCtxX = m_cCuCtxLastX.get( 0, channelType ); |
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| 1915 | ContextModel *const pCtxY = m_cCuCtxLastY.get( 0, channelType ); |
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| 1916 | Int *const lastXBitsArray = pcEstBitsSbac->lastXBits[channelType]; |
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| 1917 | Int *const lastYBitsArray = pcEstBitsSbac->lastYBits[channelType]; |
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| 1918 | |
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| 1919 | //------------------------------------------------ |
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| 1920 | |
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| 1921 | //X-coordinate |
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| 1922 | |
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| 1923 | for (ctx = 0; ctx < g_uiGroupIdx[ width - 1 ]; ctx++) |
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[313] | 1924 | { |
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[1029] | 1925 | Int ctxOffset = blkSizeOffsetX + (ctx >>shiftX); |
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| 1926 | lastXBitsArray[ ctx ] = iBitsX + pCtxX[ ctxOffset ].getEntropyBits( 0 ); |
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| 1927 | iBitsX += pCtxX[ ctxOffset ].getEntropyBits( 1 ); |
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[313] | 1928 | } |
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| 1929 | |
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[1029] | 1930 | lastXBitsArray[ctx] = iBitsX; |
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| 1931 | |
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| 1932 | //------------------------------------------------ |
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| 1933 | |
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| 1934 | //Y-coordinate |
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| 1935 | |
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| 1936 | for (ctx = 0; ctx < g_uiGroupIdx[ height - 1 ]; ctx++) |
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[313] | 1937 | { |
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[1029] | 1938 | Int ctxOffset = blkSizeOffsetY + (ctx >>shiftY); |
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| 1939 | lastYBitsArray[ ctx ] = iBitsY + pCtxY[ ctxOffset ].getEntropyBits( 0 ); |
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| 1940 | iBitsY += pCtxY[ ctxOffset ].getEntropyBits( 1 ); |
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[313] | 1941 | } |
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| 1942 | |
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[1029] | 1943 | lastYBitsArray[ctx] = iBitsY; |
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| 1944 | |
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| 1945 | } //end of component loop |
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| 1946 | |
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| 1947 | //-------------------------------------------------------------------------------------------------- |
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| 1948 | } |
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| 1949 | |
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| 1950 | |
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| 1951 | /*! |
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| 1952 | **************************************************************************** |
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| 1953 | * \brief |
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| 1954 | * estimate bit cost of significant coefficient |
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| 1955 | **************************************************************************** |
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| 1956 | */ |
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| 1957 | Void TEncSbac::estSignificantCoefficientsBit( estBitsSbacStruct* pcEstBitsSbac, ChannelType chType ) |
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| 1958 | { |
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| 1959 | ContextModel *ctxOne = m_cCUOneSCModel.get(0, 0); |
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| 1960 | ContextModel *ctxAbs = m_cCUAbsSCModel.get(0, 0); |
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| 1961 | |
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| 1962 | const UInt oneStartIndex = ((isLuma(chType)) ? (0) : (NUM_ONE_FLAG_CTX_LUMA)); |
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| 1963 | const UInt oneStopIndex = ((isLuma(chType)) ? (NUM_ONE_FLAG_CTX_LUMA) : (NUM_ONE_FLAG_CTX)); |
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| 1964 | const UInt absStartIndex = ((isLuma(chType)) ? (0) : (NUM_ABS_FLAG_CTX_LUMA)); |
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| 1965 | const UInt absStopIndex = ((isLuma(chType)) ? (NUM_ABS_FLAG_CTX_LUMA) : (NUM_ABS_FLAG_CTX)); |
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| 1966 | |
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| 1967 | for (Int ctxIdx = oneStartIndex; ctxIdx < oneStopIndex; ctxIdx++) |
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| 1968 | { |
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| 1969 | pcEstBitsSbac->m_greaterOneBits[ ctxIdx ][ 0 ] = ctxOne[ ctxIdx ].getEntropyBits( 0 ); |
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| 1970 | pcEstBitsSbac->m_greaterOneBits[ ctxIdx ][ 1 ] = ctxOne[ ctxIdx ].getEntropyBits( 1 ); |
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[313] | 1971 | } |
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[1029] | 1972 | |
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| 1973 | for (Int ctxIdx = absStartIndex; ctxIdx < absStopIndex; ctxIdx++) |
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| 1974 | { |
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| 1975 | pcEstBitsSbac->m_levelAbsBits[ ctxIdx ][ 0 ] = ctxAbs[ ctxIdx ].getEntropyBits( 0 ); |
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| 1976 | pcEstBitsSbac->m_levelAbsBits[ ctxIdx ][ 1 ] = ctxAbs[ ctxIdx ].getEntropyBits( 1 ); |
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| 1977 | } |
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[313] | 1978 | } |
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| 1979 | |
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| 1980 | /** |
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| 1981 | - Initialize our context information from the nominated source. |
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| 1982 | . |
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| 1983 | \param pSrc From where to copy context information. |
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| 1984 | */ |
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[1029] | 1985 | Void TEncSbac::xCopyContextsFrom( const TEncSbac* pSrc ) |
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| 1986 | { |
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[313] | 1987 | memcpy(m_contextModels, pSrc->m_contextModels, m_numContextModels*sizeof(m_contextModels[0])); |
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[1029] | 1988 | memcpy(m_golombRiceAdaptationStatistics, pSrc->m_golombRiceAdaptationStatistics, (sizeof(UInt) * RExt__GOLOMB_RICE_ADAPTATION_STATISTICS_SETS)); |
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[313] | 1989 | } |
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| 1990 | |
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[1029] | 1991 | Void TEncSbac::loadContexts ( const TEncSbac* pSrc) |
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[313] | 1992 | { |
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[1029] | 1993 | xCopyContextsFrom(pSrc); |
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[313] | 1994 | } |
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| 1995 | |
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[1029] | 1996 | /** Performs CABAC encoding of the explicit RDPCM mode |
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| 1997 | * \param rTu current TU data structure |
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| 1998 | * \param compID component identifier |
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| 1999 | */ |
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| 2000 | Void TEncSbac::codeExplicitRdpcmMode( TComTU &rTu, const ComponentID compID ) |
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[540] | 2001 | { |
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[1029] | 2002 | TComDataCU *cu = rTu.getCU(); |
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| 2003 | const TComRectangle &rect = rTu.getRect(compID); |
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| 2004 | const UInt absPartIdx = rTu.GetAbsPartIdxTU(compID); |
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| 2005 | const UInt tuHeight = g_aucConvertToBit[rect.height]; |
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| 2006 | const UInt tuWidth = g_aucConvertToBit[rect.width]; |
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| 2007 | |
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| 2008 | assert(tuHeight == tuWidth); |
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| 2009 | assert(tuHeight < 4); |
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| 2010 | |
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| 2011 | UInt explicitRdpcmMode = cu->getExplicitRdpcmMode(compID, absPartIdx); |
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| 2012 | |
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| 2013 | if( explicitRdpcmMode == RDPCM_OFF ) |
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[540] | 2014 | { |
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[1029] | 2015 | m_pcBinIf->encodeBin (0, m_explicitRdpcmFlagSCModel.get (0, toChannelType(compID), 0)); |
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[540] | 2016 | } |
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[1029] | 2017 | else if( explicitRdpcmMode == RDPCM_HOR || explicitRdpcmMode == RDPCM_VER ) |
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[540] | 2018 | { |
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[1029] | 2019 | m_pcBinIf->encodeBin (1, m_explicitRdpcmFlagSCModel.get (0, toChannelType(compID), 0)); |
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| 2020 | if(explicitRdpcmMode == RDPCM_HOR) |
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[540] | 2021 | { |
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[1029] | 2022 | m_pcBinIf->encodeBin ( 0, m_explicitRdpcmDirSCModel.get(0, toChannelType(compID), 0)); |
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[540] | 2023 | } |
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| 2024 | else |
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| 2025 | { |
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[1029] | 2026 | m_pcBinIf->encodeBin ( 1, m_explicitRdpcmDirSCModel.get(0, toChannelType(compID), 0)); |
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[540] | 2027 | } |
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| 2028 | } |
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[1029] | 2029 | else |
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[540] | 2030 | { |
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[1029] | 2031 | assert(0); |
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[540] | 2032 | } |
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| 2033 | } |
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| 2034 | |
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[1207] | 2035 | #if SVC_EXTENSION |
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| 2036 | Void TEncSbac::codeSliceHeaderExtn( TComSlice* pSlice, Int shBitsWrittenTillNow ) |
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[540] | 2037 | { |
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[1029] | 2038 | assert (0); |
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| 2039 | return; |
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| 2040 | } |
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[644] | 2041 | #endif |
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[540] | 2042 | |
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[313] | 2043 | //! \} |
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