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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 #ifndef __TCOMTU__
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35 #define __TCOMTU__
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36
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37 class TComTU; // forward declaration
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38
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39 #include "CommonDef.h"
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40 #include "TComRectangle.h"
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41 #include "TComChromaFormat.h"
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42
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43 class TComDataCU; // forward declaration
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44
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45 //----------------------------------------------------------------------------------------------------------------------
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46
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47
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48 class TComTU
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49 {
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50 public:
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51 typedef enum TU_SPLIT_MODE { DONT_SPLIT=0, VERTICAL_SPLIT=1, QUAD_SPLIT=2, NUMBER_OF_SPLIT_MODES=3 } SPLIT_MODE;
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52
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53 static const UInt NUMBER_OF_SECTIONS[NUMBER_OF_SPLIT_MODES];
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54
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55 protected:
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56 ChromaFormat mChromaFormat;
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57 Bool mbProcessLastOfLevel; // if true, then if size n/2 x n/2 is invalid, the nxn block for a channel is processed only for the last block, not the first.
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58 UInt mCuDepth;
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59 UInt mTrDepthRelCU[MAX_NUM_COMPONENT];
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60 UInt mSection;
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61 TU_SPLIT_MODE mSplitMode;
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62 TComRectangle mRect[MAX_NUM_COMPONENT];
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63 Bool mCodeAll[MAX_NUM_COMPONENT];
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64 UInt mOrigWidth[MAX_NUM_COMPONENT];
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65 UInt mOffsets[MAX_NUM_COMPONENT];
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66 UInt mAbsPartIdxCU;
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67 UInt mAbsPartIdxTURelCU;
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68 UInt mAbsPartIdxStep;
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69 TComDataCU *mpcCU;
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70 UInt mLog2TrLumaSize;
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71 TComTU *mpParent;
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72
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73 TComTU(const TComTU &); // not defined - do not use
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74 TComTU&operator=(const TComTU &); // not defined - do not use
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75
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76 public:
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77 TComTU( TComDataCU *pcCU,
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78 const UInt absPartIdxCU,
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79 const UInt cuDepth,
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80 const UInt initTrDepthRelCU);
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81
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82 protected:
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83 TComTU( TComTU &parentLevel,
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84 const Bool bProcessLastOfLevel,
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85 const TU_SPLIT_MODE splitMode = QUAD_SPLIT,
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86 const Bool splitAtCurrentDepth = false,
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87 const ComponentID absPartIdxSourceComponent = COMPONENT_Y
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88 );
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89
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90 public:
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91 TComTU *Parent() { return mpParent; }
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92 const TComTU *Parent() const { return mpParent; }
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93
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94 UInt getCoefficientOffset(const ComponentID compID) const { return mOffsets[compID]; }
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95
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96 const TComRectangle &getRect(const ComponentID compID) const { return mRect[compID]; }
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97
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98 Bool ProcessingAllQuadrants(const ComponentID compID) const { return mCodeAll[compID]; }
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99 Bool ProcessComponentSection(const ComponentID compID) const { return mRect[compID].width != 0; }
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100 Bool ProcessChannelSection(const ChannelType chType) const { return mRect[chType].width != 0; }
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101 UInt GetSectionNumber() const { return mSection; }
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102
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103 UInt getCUDepth() const { return mCuDepth; }
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104
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105 UInt GetTransformDepthTotal() const { return mCuDepth+GetTransformDepthRel(); }
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106 UInt GetTransformDepthTotalAdj(const ComponentID compID) const { return mCuDepth+GetTransformDepthRelAdj(compID); }
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107
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108 UInt GetTransformDepthRel() const { return mTrDepthRelCU[COMPONENT_Y]; }
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109 UInt GetTransformDepthRelAdj(const ComponentID compID) const { return mTrDepthRelCU[compID]; }
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110 UInt GetTransformDepthRelAdj(const ChannelType chType) const
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111 {
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112 assert(isLuma(chType) || (mTrDepthRelCU[COMPONENT_Cb] == mTrDepthRelCU[COMPONENT_Cr]));
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113 return mTrDepthRelCU[isLuma(chType) ? COMPONENT_Y : COMPONENT_Cb];
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114 }
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115
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116 UInt GetAbsPartIdxCU() const { return mAbsPartIdxCU; }
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117 UInt GetRelPartIdxTU() const { return mAbsPartIdxTURelCU; }
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118 UInt GetRelPartIdxTU(const ComponentID compID) const { return ProcessingAllQuadrants(compID) ? mAbsPartIdxTURelCU : (mAbsPartIdxTURelCU & (~0x3)); }
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119 UInt GetAbsPartIdxTU() const { return GetAbsPartIdxCU() + GetRelPartIdxTU(); }
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120 UInt GetAbsPartIdxTU(const ComponentID compID) const { return GetAbsPartIdxCU() + GetRelPartIdxTU(compID); }
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121 UInt GetAbsPartIdxNumParts() const { return mAbsPartIdxStep; }
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122 UInt GetAbsPartIdxNumParts(const ComponentID compID) const { return ProcessingAllQuadrants(compID) ? mAbsPartIdxStep : (mAbsPartIdxStep * NUMBER_OF_SECTIONS[mSplitMode]); }
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123
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124 ChromaFormat GetChromaFormat() const { return mChromaFormat; }
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125
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126 TComDataCU *getCU() { return mpcCU; }
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127 const TComDataCU *getCU() const { return mpcCU; }
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128 Bool IsLastSection() const { return mSection+1>=((1<<mSplitMode)); }
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129
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130 UInt GetLog2LumaTrSize() const { return mLog2TrLumaSize; }
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131 UInt GetEquivalentLog2TrSize(const ComponentID compID) const;
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132 TU_SPLIT_MODE GetSplitMode() const { return mSplitMode; }
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133
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134 Bool useDST(const ComponentID compID);
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135 Bool isNonTransformedResidualRotated(const ComponentID compID);
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136
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137 UInt getGolombRiceStatisticsIndex(const ComponentID compID);
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138 };
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139
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140
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141
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142 class TComTURecurse : public TComTU
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143 {
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144 public:
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145
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146 TComTURecurse( TComDataCU *pcCU,
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147 const UInt absPartIdxCU,
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148 const UInt forcedDepthOfCU)
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149 : TComTU(pcCU, absPartIdxCU, forcedDepthOfCU, 0) { }
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150
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151 TComTURecurse( TComDataCU *pcCU,
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152 const UInt absPartIdxCU); // CU's depth is taken from CU->getDepth(idx)
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153
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154 TComTURecurse( TComTU &parentLevel, //Parent TU from which recursion children are derived
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155 const Bool bProcessLastOfLevel, //If true (and the split results in a "step-up" for chroma), the chroma TU is colocated with the last luma TU instead of the first
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156 const TU_SPLIT_MODE splitMode = QUAD_SPLIT, //DONT_SPLIT = create one new TU as a copy of its parent, VERTICAL_SPLIT = split the TU into top and bottom halves, QUAD_SPLIT = split the TU into four equal quadrants
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157 const Bool splitAtCurrentDepth = false, //Set true to keep the current depth when applying a vertical or quad split
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158 const ComponentID absPartIdxSourceComponent = COMPONENT_Y //Specifies which component of the parent TU should be used to initialise the absPartIdx of the first child and the absPartIdx step (this is needed when splitting a "stepped-up" chroma TU)
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159 )
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160 : TComTU(parentLevel, bProcessLastOfLevel, splitMode, splitAtCurrentDepth, absPartIdxSourceComponent) { }
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161
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162 Bool nextSection(const TComTU &parent); // returns true if there is another section to process, and prepares internal structures, else returns false
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163 };
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164
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165 //----------------------------------------------------------------------------------------------------------------------
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166
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167 #endif
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