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