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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 TComPattern.cpp
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35 \brief neighbouring pixel access classes
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36 */
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37
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38 #include "TComPic.h"
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39 #include "TComPattern.h"
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40 #include "TComDataCU.h"
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41 #include "TComTU.h"
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42 #include "Debug.h"
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43 #include "TComPrediction.h"
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44
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45 //! \ingroup TLibCommon
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46 //! \{
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47
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48 // Forward declarations
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49
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50 /// padding of unavailable reference samples for intra prediction
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51 #if O0043_BEST_EFFORT_DECODING
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52 Void fillReferenceSamples( const Int bitDepth, const Int bitDepthDelta, TComDataCU* pcCU, const Pel* piRoiOrigin, Pel* piAdiTemp, const Bool* bNeighborFlags,
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53 #else
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54 Void fillReferenceSamples( const Int bitDepth, TComDataCU* pcCU, const Pel* piRoiOrigin, Pel* piAdiTemp, const Bool* bNeighborFlags,
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55 #endif
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56 const Int iNumIntraNeighbor, const Int unitWidth, const Int unitHeight, const Int iAboveUnits, const Int iLeftUnits,
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57 const UInt uiCuWidth, const UInt uiCuHeight, const UInt uiWidth, const UInt uiHeight, const Int iPicStride,
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58 const ChannelType chType, const ChromaFormat chFmt );
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59
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60 /// constrained intra prediction
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61 Bool isAboveLeftAvailable ( TComDataCU* pcCU, UInt uiPartIdxLT );
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62 Int isAboveAvailable ( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxRT, Bool* bValidFlags );
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63 Int isLeftAvailable ( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxLB, Bool* bValidFlags );
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64 Int isAboveRightAvailable ( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxRT, Bool* bValidFlags );
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65 Int isBelowLeftAvailable ( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxLB, Bool* bValidFlags );
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66
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67
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68 // ====================================================================================================================
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69 // Public member functions (TComPatternParam)
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70 // ====================================================================================================================
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71
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72 /** \param piTexture pixel data
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73 \param iRoiWidth pattern width
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74 \param iRoiHeight pattern height
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75 \param iStride buffer stride
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76 \param iOffsetLeft neighbour offset (left)
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77 \param iOffsetRight neighbour offset (right)
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78 \param iOffsetAbove neighbour offset (above)
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79 \param iOffsetBottom neighbour offset (bottom)
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80 */
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81 Void TComPatternParam::setPatternParamPel ( Pel* piTexture,
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82 Int iRoiWidth,
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83 Int iRoiHeight,
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84 Int iStride
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85 )
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86 {
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87 m_piROIOrigin = piTexture;
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88 m_iROIWidth = iRoiWidth;
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89 m_iROIHeight = iRoiHeight;
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90 m_iPatternStride = iStride;
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91 }
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92
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93 // ====================================================================================================================
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94 // Public member functions (TComPattern)
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95 // ====================================================================================================================
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96
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97 Void TComPattern::initPattern (Pel* piY,
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98 Int iRoiWidth,
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99 Int iRoiHeight,
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100 Int iStride)
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101 {
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102 m_cPatternY. setPatternParamPel( piY, iRoiWidth, iRoiHeight, iStride);
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103 }
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104
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105
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106 // TODO: move this function to TComPrediction.cpp.
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107 Void TComPrediction::initAdiPatternChType( TComTU &rTu, Bool& bAbove, Bool& bLeft, const ComponentID compID, const Bool bFilterRefSamples DEBUG_STRING_FN_DECLARE(sDebug))
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108 {
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109 const ChannelType chType = toChannelType(compID);
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110
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111 TComDataCU *pcCU=rTu.getCU();
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112 const UInt uiZorderIdxInPart=rTu.GetAbsPartIdxTU();
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113 const UInt uiTuWidth = rTu.getRect(compID).width;
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114 const UInt uiTuHeight = rTu.getRect(compID).height;
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115 const UInt uiTuWidth2 = uiTuWidth << 1;
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116 const UInt uiTuHeight2 = uiTuHeight << 1;
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117
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118 const Int iBaseUnitSize = g_uiMaxCUWidth >> g_uiMaxCUDepth;
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119 const Int iUnitWidth = iBaseUnitSize >> pcCU->getPic()->getPicYuvRec()->getComponentScaleX(compID);
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120 const Int iUnitHeight = iBaseUnitSize >> pcCU->getPic()->getPicYuvRec()->getComponentScaleY(compID);
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121 const Int iTUWidthInUnits = uiTuWidth / iUnitWidth;
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122 const Int iTUHeightInUnits = uiTuHeight / iUnitHeight;
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123 const Int iAboveUnits = iTUWidthInUnits << 1;
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124 const Int iLeftUnits = iTUHeightInUnits << 1;
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125
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126 assert(iTUHeightInUnits > 0 && iTUWidthInUnits > 0);
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127
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128 const Int iPartIdxStride = pcCU->getPic()->getNumPartInCtuWidth();
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129 const UInt uiPartIdxLT = pcCU->getZorderIdxInCtu() + uiZorderIdxInPart;
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130 const UInt uiPartIdxRT = g_auiRasterToZscan[ g_auiZscanToRaster[ uiPartIdxLT ] + iTUWidthInUnits - 1 ];
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131 const UInt uiPartIdxLB = g_auiRasterToZscan[ g_auiZscanToRaster[ uiPartIdxLT ] + ((iTUHeightInUnits - 1) * iPartIdxStride)];
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132
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133 Int iPicStride = pcCU->getPic()->getStride(compID);
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134 Bool bNeighborFlags[4 * MAX_NUM_SPU_W + 1];
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135 Int iNumIntraNeighbor = 0;
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136
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137 bNeighborFlags[iLeftUnits] = isAboveLeftAvailable( pcCU, uiPartIdxLT );
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138 iNumIntraNeighbor += bNeighborFlags[iLeftUnits] ? 1 : 0;
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139 iNumIntraNeighbor += isAboveAvailable ( pcCU, uiPartIdxLT, uiPartIdxRT, (bNeighborFlags + iLeftUnits + 1) );
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140 iNumIntraNeighbor += isAboveRightAvailable( pcCU, uiPartIdxLT, uiPartIdxRT, (bNeighborFlags + iLeftUnits + 1 + iTUWidthInUnits ) );
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141 iNumIntraNeighbor += isLeftAvailable ( pcCU, uiPartIdxLT, uiPartIdxLB, (bNeighborFlags + iLeftUnits - 1) );
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142 iNumIntraNeighbor += isBelowLeftAvailable ( pcCU, uiPartIdxLT, uiPartIdxLB, (bNeighborFlags + iLeftUnits - 1 - iTUHeightInUnits) );
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143
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144 bAbove = true;
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145 bLeft = true;
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146
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147 const ChromaFormat chFmt = rTu.GetChromaFormat();
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148 const UInt uiROIWidth = uiTuWidth2+1;
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149 const UInt uiROIHeight = uiTuHeight2+1;
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150
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151 assert(uiROIWidth*uiROIHeight <= m_iYuvExtSize);
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152
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153 #ifdef DEBUG_STRING
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154 std::stringstream ss(stringstream::out);
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155 #endif
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156
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157 {
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158 Pel *piAdiTemp = m_piYuvExt[compID][PRED_BUF_UNFILTERED];
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159 Pel *piRoiOrigin = pcCU->getPic()->getPicYuvRec()->getAddr(compID, pcCU->getCtuRsAddr(), pcCU->getZorderIdxInCtu()+uiZorderIdxInPart);
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160 #if O0043_BEST_EFFORT_DECODING
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161 fillReferenceSamples (g_bitDepthInStream[chType], g_bitDepthInStream[chType] - g_bitDepth[chType], pcCU, piRoiOrigin, piAdiTemp, bNeighborFlags, iNumIntraNeighbor, iUnitWidth, iUnitHeight, iAboveUnits, iLeftUnits,
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162 #else
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163 fillReferenceSamples (g_bitDepth[chType], pcCU, piRoiOrigin, piAdiTemp, bNeighborFlags, iNumIntraNeighbor, iUnitWidth, iUnitHeight, iAboveUnits, iLeftUnits,
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164 #endif
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165 uiTuWidth, uiTuHeight, uiROIWidth, uiROIHeight, iPicStride, toChannelType(compID), chFmt);
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166
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167
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168 #ifdef DEBUG_STRING
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169 if (DebugOptionList::DebugString_Pred.getInt()&DebugStringGetPredModeMask(MODE_INTRA))
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170 {
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171 ss << "###: generating Ref Samples for channel " << compID << " and " << rTu.getRect(compID).width << " x " << rTu.getRect(compID).height << "\n";
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172 for (UInt y=0; y<uiROIHeight; y++)
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173 {
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174 ss << "###: - ";
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175 for (UInt x=0; x<uiROIWidth; x++)
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176 {
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177 if (x==0 || y==0)
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178 ss << piAdiTemp[y*uiROIWidth + x] << ", ";
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179 // if (x%16==15) ss << "\nPart size: ~ ";
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180 }
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181 ss << "\n";
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182 }
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183 }
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184 #endif
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185
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186 if (bFilterRefSamples)
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187 {
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188 // generate filtered intra prediction samples
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189
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190 Int stride = uiROIWidth;
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191 const Pel *piSrcPtr = piAdiTemp + (stride * uiTuHeight2); // bottom left
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192 Pel *piDestPtr = m_piYuvExt[compID][PRED_BUF_FILTERED] + (stride * uiTuHeight2); // bottom left
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193
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194 //------------------------------------------------
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195
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196 Bool useStrongIntraSmoothing = isLuma(chType) && pcCU->getSlice()->getSPS()->getUseStrongIntraSmoothing();
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197
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198 const Pel bottomLeft = piAdiTemp[stride * uiTuHeight2];
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199 const Pel topLeft = piAdiTemp[0];
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200 const Pel topRight = piAdiTemp[uiTuWidth2];
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201
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202 if (useStrongIntraSmoothing)
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203 {
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204 #if O0043_BEST_EFFORT_DECODING
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205 const Int threshold = 1 << (g_bitDepthInStream[chType] - 5);
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206 #else
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207 const Int threshold = 1 << (g_bitDepth[chType] - 5);
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208 #endif
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209 const Bool bilinearLeft = abs((bottomLeft + topLeft ) - (2 * piAdiTemp[stride * uiTuHeight])) < threshold; //difference between the
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210 const Bool bilinearAbove = abs((topLeft + topRight) - (2 * piAdiTemp[ uiTuWidth ])) < threshold; //ends and the middle
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211 if ((uiTuWidth < 32) || (!bilinearLeft) || (!bilinearAbove))
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212 useStrongIntraSmoothing = false;
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213 }
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214
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215 *piDestPtr = *piSrcPtr; // bottom left is not filtered
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216 piDestPtr -= stride;
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217 piSrcPtr -= stride;
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218
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219 //------------------------------------------------
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220
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221 //left column (bottom to top)
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222
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223 if (useStrongIntraSmoothing)
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224 {
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225 const Int shift = g_aucConvertToBit[uiTuHeight] + 3; //log2(uiTuHeight2)
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226
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227 for(UInt i=1; i<uiTuHeight2; i++, piDestPtr-=stride)
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228 {
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229 *piDestPtr = (((uiTuHeight2 - i) * bottomLeft) + (i * topLeft) + uiTuHeight) >> shift;
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230 }
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231
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232 piSrcPtr -= stride * (uiTuHeight2 - 1);
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233 }
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234 else
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235 {
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236 for(UInt i=1; i<uiTuHeight2; i++, piDestPtr-=stride, piSrcPtr-=stride)
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237 {
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238 *piDestPtr = ( piSrcPtr[stride] + 2*piSrcPtr[0] + piSrcPtr[-stride] + 2 ) >> 2;
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239 }
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240 }
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241
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242 //------------------------------------------------
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243
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244 //top-left
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245
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246 if (useStrongIntraSmoothing)
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247 {
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248 *piDestPtr = piSrcPtr[0];
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249 }
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250 else
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251 {
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252 *piDestPtr = ( piSrcPtr[stride] + 2*piSrcPtr[0] + piSrcPtr[1] + 2 ) >> 2;
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253 }
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254 piDestPtr += 1;
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255 piSrcPtr += 1;
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256
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257 //------------------------------------------------
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258
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259 //top row (left-to-right)
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260
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261 if (useStrongIntraSmoothing)
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262 {
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263 const Int shift = g_aucConvertToBit[uiTuWidth] + 3; //log2(uiTuWidth2)
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264
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265 for(UInt i=1; i<uiTuWidth2; i++, piDestPtr++)
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266 {
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267 *piDestPtr = (((uiTuWidth2 - i) * topLeft) + (i * topRight) + uiTuWidth) >> shift;
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268 }
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269
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270 piSrcPtr += uiTuWidth2 - 1;
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271 }
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272 else
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273 {
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274 for(UInt i=1; i<uiTuWidth2; i++, piDestPtr++, piSrcPtr++)
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275 {
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276 *piDestPtr = ( piSrcPtr[1] + 2*piSrcPtr[0] + piSrcPtr[-1] + 2 ) >> 2;
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277 }
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278 }
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279
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280 //------------------------------------------------
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281
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282 *piDestPtr=*piSrcPtr; // far right is not filtered
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283
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284 #ifdef DEBUG_STRING
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285 if (DebugOptionList::DebugString_Pred.getInt()&DebugStringGetPredModeMask(MODE_INTRA))
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286 {
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287 ss << "###: filtered result for channel " << compID <<"\n";
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288 for (UInt y=0; y<uiROIHeight; y++)
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289 {
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290 ss << "###: - ";
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291 for (UInt x=0; x<uiROIWidth; x++)
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292 {
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293 if (x==0 || y==0)
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294 ss << m_piYuvExt[compID][PRED_BUF_FILTERED][y*uiROIWidth + x] << ", ";
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295 // if (x%16==15) ss << "\nPart size: ~ ";
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296 }
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297 ss << "\n";
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298 }
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299 }
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300 #endif
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301
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302
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303 }
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304 }
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305 DEBUG_STRING_APPEND(sDebug, ss.str())
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306 }
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307
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308 #if O0043_BEST_EFFORT_DECODING
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309 Void fillReferenceSamples( const Int bitDepth, const Int bitDepthDelta, TComDataCU* pcCU, const Pel* piRoiOrigin, Pel* piAdiTemp, const Bool* bNeighborFlags,
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310 #else
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311 Void fillReferenceSamples( const Int bitDepth, TComDataCU* pcCU, const Pel* piRoiOrigin, Pel* piAdiTemp, const Bool* bNeighborFlags,
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312 #endif
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313 const Int iNumIntraNeighbor, const Int unitWidth, const Int unitHeight, const Int iAboveUnits, const Int iLeftUnits,
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314 const UInt uiCuWidth, const UInt uiCuHeight, const UInt uiWidth, const UInt uiHeight, const Int iPicStride,
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315 const ChannelType chType, const ChromaFormat chFmt )
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316 {
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317 const Pel* piRoiTemp;
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318 Int i, j;
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319 Int iDCValue = 1 << (bitDepth - 1);
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320 const Int iTotalUnits = iAboveUnits + iLeftUnits + 1; //+1 for top-left
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321
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322 if (iNumIntraNeighbor == 0)
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323 {
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324 // Fill border with DC value
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325 for (i=0; i<uiWidth; i++)
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326 {
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327 piAdiTemp[i] = iDCValue;
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328 }
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329 for (i=1; i<uiHeight; i++)
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330 {
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331 piAdiTemp[i*uiWidth] = iDCValue;
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332 }
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333 }
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334 else if (iNumIntraNeighbor == iTotalUnits)
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335 {
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336 // Fill top-left border and top and top right with rec. samples
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337 piRoiTemp = piRoiOrigin - iPicStride - 1;
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338
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339 for (i=0; i<uiWidth; i++)
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340 {
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341 #if O0043_BEST_EFFORT_DECODING
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342 piAdiTemp[i] = piRoiTemp[i] << bitDepthDelta;
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343 #else
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344 piAdiTemp[i] = piRoiTemp[i];
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345 #endif
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346 }
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347
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348 // Fill left and below left border with rec. samples
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349 piRoiTemp = piRoiOrigin - 1;
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350
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351 for (i=1; i<uiHeight; i++)
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352 {
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353 #if O0043_BEST_EFFORT_DECODING
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354 piAdiTemp[i*uiWidth] = (*(piRoiTemp)) << bitDepthDelta;
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355 #else
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356 piAdiTemp[i*uiWidth] = *(piRoiTemp);
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357 #endif
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358 piRoiTemp += iPicStride;
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|
359 }
|
|
|
360 }
|
|
|
361 else // reference samples are partially available
|
|
|
362 {
|
|
|
363 // all above units have "unitWidth" samples each, all left/below-left units have "unitHeight" samples each
|
|
|
364 const Int iTotalSamples = (iLeftUnits * unitHeight) + ((iAboveUnits + 1) * unitWidth);
|
|
|
365 Pel piAdiLine[5 * MAX_CU_SIZE];
|
|
|
366 Pel *piAdiLineTemp;
|
|
|
367 const Bool *pbNeighborFlags;
|
|
|
368
|
|
|
369
|
|
|
370 // Initialize
|
|
|
371 for (i=0; i<iTotalSamples; i++)
|
|
|
372 {
|
|
|
373 piAdiLine[i] = iDCValue;
|
|
|
374 }
|
|
|
375
|
|
|
376 // Fill top-left sample
|
|
|
377 piRoiTemp = piRoiOrigin - iPicStride - 1;
|
|
|
378 piAdiLineTemp = piAdiLine + (iLeftUnits * unitHeight);
|
|
|
379 pbNeighborFlags = bNeighborFlags + iLeftUnits;
|
|
|
380 if (*pbNeighborFlags)
|
|
|
381 {
|
|
|
382 #if O0043_BEST_EFFORT_DECODING
|
|
|
383 Pel topLeftVal=piRoiTemp[0] << bitDepthDelta;
|
|
|
384 #else
|
|
|
385 Pel topLeftVal=piRoiTemp[0];
|
|
|
386 #endif
|
|
|
387 for (i=0; i<unitWidth; i++)
|
|
|
388 {
|
|
|
389 piAdiLineTemp[i] = topLeftVal;
|
|
|
390 }
|
|
|
391 }
|
|
|
392
|
|
|
393 // Fill left & below-left samples (downwards)
|
|
|
394 piRoiTemp += iPicStride;
|
|
|
395 piAdiLineTemp--;
|
|
|
396 pbNeighborFlags--;
|
|
|
397
|
|
|
398 for (j=0; j<iLeftUnits; j++)
|
|
|
399 {
|
|
|
400 if (*pbNeighborFlags)
|
|
|
401 {
|
|
|
402 for (i=0; i<unitHeight; i++)
|
|
|
403 {
|
|
|
404 #if O0043_BEST_EFFORT_DECODING
|
|
|
405 piAdiLineTemp[-i] = piRoiTemp[i*iPicStride] << bitDepthDelta;
|
|
|
406 #else
|
|
|
407 piAdiLineTemp[-i] = piRoiTemp[i*iPicStride];
|
|
|
408 #endif
|
|
|
409 }
|
|
|
410 }
|
|
|
411 piRoiTemp += unitHeight*iPicStride;
|
|
|
412 piAdiLineTemp -= unitHeight;
|
|
|
413 pbNeighborFlags--;
|
|
|
414 }
|
|
|
415
|
|
|
416 // Fill above & above-right samples (left-to-right) (each unit has "unitWidth" samples)
|
|
|
417 piRoiTemp = piRoiOrigin - iPicStride;
|
|
|
418 // offset line buffer by iNumUints2*unitHeight (for left/below-left) + unitWidth (for above-left)
|
|
|
419 piAdiLineTemp = piAdiLine + (iLeftUnits * unitHeight) + unitWidth;
|
|
|
420 pbNeighborFlags = bNeighborFlags + iLeftUnits + 1;
|
|
|
421 for (j=0; j<iAboveUnits; j++)
|
|
|
422 {
|
|
|
423 if (*pbNeighborFlags)
|
|
|
424 {
|
|
|
425 for (i=0; i<unitWidth; i++)
|
|
|
426 {
|
|
|
427 #if O0043_BEST_EFFORT_DECODING
|
|
|
428 piAdiLineTemp[i] = piRoiTemp[i] << bitDepthDelta;
|
|
|
429 #else
|
|
|
430 piAdiLineTemp[i] = piRoiTemp[i];
|
|
|
431 #endif
|
|
|
432 }
|
|
|
433 }
|
|
|
434 piRoiTemp += unitWidth;
|
|
|
435 piAdiLineTemp += unitWidth;
|
|
|
436 pbNeighborFlags++;
|
|
|
437 }
|
|
|
438
|
|
|
439 // Pad reference samples when necessary
|
|
|
440 Int iCurrJnit = 0;
|
|
|
441 Pel *piAdiLineCur = piAdiLine;
|
|
|
442 const UInt piAdiLineTopRowOffset = iLeftUnits * (unitHeight - unitWidth);
|
|
|
443
|
|
|
444 if (!bNeighborFlags[0])
|
|
|
445 {
|
|
|
446 // very bottom unit of bottom-left; at least one unit will be valid.
|
|
|
447 {
|
|
|
448 Int iNext = 1;
|
|
|
449 while (iNext < iTotalUnits && !bNeighborFlags[iNext])
|
|
|
450 {
|
|
|
451 iNext++;
|
|
|
452 }
|
|
|
453 Pel *piAdiLineNext = piAdiLine + ((iNext < iLeftUnits) ? (iNext * unitHeight) : (piAdiLineTopRowOffset + (iNext * unitWidth)));
|
|
|
454 const Pel refSample = *piAdiLineNext;
|
|
|
455 // Pad unavailable samples with new value
|
|
|
456 Int iNextOrTop = std::min<Int>(iNext, iLeftUnits);
|
|
|
457 // fill left column
|
|
|
458 while (iCurrJnit < iNextOrTop)
|
|
|
459 {
|
|
|
460 for (i=0; i<unitHeight; i++)
|
|
|
461 {
|
|
|
462 piAdiLineCur[i] = refSample;
|
|
|
463 }
|
|
|
464 piAdiLineCur += unitHeight;
|
|
|
465 iCurrJnit++;
|
|
|
466 }
|
|
|
467 // fill top row
|
|
|
468 while (iCurrJnit < iNext)
|
|
|
469 {
|
|
|
470 for (i=0; i<unitWidth; i++)
|
|
|
471 {
|
|
|
472 piAdiLineCur[i] = refSample;
|
|
|
473 }
|
|
|
474 piAdiLineCur += unitWidth;
|
|
|
475 iCurrJnit++;
|
|
|
476 }
|
|
|
477 }
|
|
|
478 }
|
|
|
479
|
|
|
480 // pad all other reference samples.
|
|
|
481 while (iCurrJnit < iTotalUnits)
|
|
|
482 {
|
|
|
483 if (!bNeighborFlags[iCurrJnit]) // samples not available
|
|
|
484 {
|
|
|
485 {
|
|
|
486 const Int numSamplesInCurrUnit = (iCurrJnit >= iLeftUnits) ? unitWidth : unitHeight;
|
|
|
487 const Pel refSample = *(piAdiLineCur-1);
|
|
|
488 for (i=0; i<numSamplesInCurrUnit; i++)
|
|
|
489 {
|
|
|
490 piAdiLineCur[i] = refSample;
|
|
|
491 }
|
|
|
492 piAdiLineCur += numSamplesInCurrUnit;
|
|
|
493 iCurrJnit++;
|
|
|
494 }
|
|
|
495 }
|
|
|
496 else
|
|
|
497 {
|
|
|
498 piAdiLineCur += (iCurrJnit >= iLeftUnits) ? unitWidth : unitHeight;
|
|
|
499 iCurrJnit++;
|
|
|
500 }
|
|
|
501 }
|
|
|
502
|
|
|
503 // Copy processed samples
|
|
|
504
|
|
|
505 piAdiLineTemp = piAdiLine + uiHeight + unitWidth - 2;
|
|
|
506 // top left, top and top right samples
|
|
|
507 for (i=0; i<uiWidth; i++)
|
|
|
508 {
|
|
|
509 piAdiTemp[i] = piAdiLineTemp[i];
|
|
|
510 }
|
|
|
511
|
|
|
512 piAdiLineTemp = piAdiLine + uiHeight - 1;
|
|
|
513 for (i=1; i<uiHeight; i++)
|
|
|
514 {
|
|
|
515 piAdiTemp[i*uiWidth] = piAdiLineTemp[-i];
|
|
|
516 }
|
|
|
517 }
|
|
|
518 }
|
|
|
519
|
|
|
520 /** Get pointer to reference samples for intra prediction
|
|
|
521 * \param uiDirMode prediction mode index
|
|
|
522 * \param log2BlkSize size of block (2 = 4x4, 3 = 8x8, 4 = 16x16, 5 = 32x32, 6 = 64x64)
|
|
|
523 * \param piAdiBuf pointer to unfiltered reference samples
|
|
|
524 * \return pointer to (possibly filtered) reference samples
|
|
|
525 *
|
|
|
526 * The prediction mode index is used to determine whether a smoothed reference sample buffer is returned.
|
|
|
527 */
|
|
|
528
|
|
|
529 Bool TComPrediction::filteringIntraReferenceSamples(const ComponentID compID, UInt uiDirMode, UInt uiTuChWidth, UInt uiTuChHeight, const ChromaFormat chFmt, const Bool intraReferenceSmoothingDisabled)
|
|
|
530 {
|
|
|
531 Bool bFilter;
|
|
|
532
|
|
|
533 if (!filterIntraReferenceSamples(toChannelType(compID), chFmt, intraReferenceSmoothingDisabled))
|
|
|
534 {
|
|
|
535 bFilter=false;
|
|
|
536 }
|
|
|
537 else
|
|
|
538 {
|
|
|
539 assert(uiTuChWidth>=4 && uiTuChHeight>=4 && uiTuChWidth<128 && uiTuChHeight<128);
|
|
|
540
|
|
|
541 if (uiDirMode == DC_IDX)
|
|
|
542 {
|
|
|
543 bFilter=false; //no smoothing for DC or LM chroma
|
|
|
544 }
|
|
|
545 else
|
|
|
546 {
|
|
|
547 Int diff = min<Int>(abs((Int) uiDirMode - HOR_IDX), abs((Int)uiDirMode - VER_IDX));
|
|
|
548 UInt sizeIndex=g_aucConvertToBit[uiTuChWidth];
|
|
|
549 assert(sizeIndex < MAX_INTRA_FILTER_DEPTHS);
|
|
|
550 bFilter = diff > m_aucIntraFilter[toChannelType(compID)][sizeIndex];
|
|
|
551 }
|
|
|
552 }
|
|
|
553 return bFilter;
|
|
|
554 }
|
|
|
555
|
|
|
556 Bool isAboveLeftAvailable( TComDataCU* pcCU, UInt uiPartIdxLT )
|
|
|
557 {
|
|
|
558 Bool bAboveLeftFlag;
|
|
|
559 UInt uiPartAboveLeft;
|
|
|
560 TComDataCU* pcCUAboveLeft = pcCU->getPUAboveLeft( uiPartAboveLeft, uiPartIdxLT );
|
|
|
561 if(pcCU->getSlice()->getPPS()->getConstrainedIntraPred())
|
|
|
562 {
|
|
|
563 bAboveLeftFlag = ( pcCUAboveLeft && pcCUAboveLeft->isIntra( uiPartAboveLeft ) );
|
|
|
564 }
|
|
|
565 else
|
|
|
566 {
|
|
|
567 bAboveLeftFlag = (pcCUAboveLeft ? true : false);
|
|
|
568 }
|
|
|
569 return bAboveLeftFlag;
|
|
|
570 }
|
|
|
571
|
|
|
572 Int isAboveAvailable( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxRT, Bool *bValidFlags )
|
|
|
573 {
|
|
|
574 const UInt uiRasterPartBegin = g_auiZscanToRaster[uiPartIdxLT];
|
|
|
575 const UInt uiRasterPartEnd = g_auiZscanToRaster[uiPartIdxRT]+1;
|
|
|
576 const UInt uiIdxStep = 1;
|
|
|
577 Bool *pbValidFlags = bValidFlags;
|
|
|
578 Int iNumIntra = 0;
|
|
|
579
|
|
|
580 for ( UInt uiRasterPart = uiRasterPartBegin; uiRasterPart < uiRasterPartEnd; uiRasterPart += uiIdxStep )
|
|
|
581 {
|
|
|
582 UInt uiPartAbove;
|
|
|
583 TComDataCU* pcCUAbove = pcCU->getPUAbove( uiPartAbove, g_auiRasterToZscan[uiRasterPart] );
|
|
|
584 if(pcCU->getSlice()->getPPS()->getConstrainedIntraPred())
|
|
|
585 {
|
|
|
586 if ( pcCUAbove && pcCUAbove->isIntra( uiPartAbove ) )
|
|
|
587 {
|
|
|
588 iNumIntra++;
|
|
|
589 *pbValidFlags = true;
|
|
|
590 }
|
|
|
591 else
|
|
|
592 {
|
|
|
593 *pbValidFlags = false;
|
|
|
594 }
|
|
|
595 }
|
|
|
596 else
|
|
|
597 {
|
|
|
598 if (pcCUAbove)
|
|
|
599 {
|
|
|
600 iNumIntra++;
|
|
|
601 *pbValidFlags = true;
|
|
|
602 }
|
|
|
603 else
|
|
|
604 {
|
|
|
605 *pbValidFlags = false;
|
|
|
606 }
|
|
|
607 }
|
|
|
608 pbValidFlags++;
|
|
|
609 }
|
|
|
610 return iNumIntra;
|
|
|
611 }
|
|
|
612
|
|
|
613 Int isLeftAvailable( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxLB, Bool *bValidFlags )
|
|
|
614 {
|
|
|
615 const UInt uiRasterPartBegin = g_auiZscanToRaster[uiPartIdxLT];
|
|
|
616 const UInt uiRasterPartEnd = g_auiZscanToRaster[uiPartIdxLB]+1;
|
|
|
617 const UInt uiIdxStep = pcCU->getPic()->getNumPartInCtuWidth();
|
|
|
618 Bool *pbValidFlags = bValidFlags;
|
|
|
619 Int iNumIntra = 0;
|
|
|
620
|
|
|
621 for ( UInt uiRasterPart = uiRasterPartBegin; uiRasterPart < uiRasterPartEnd; uiRasterPart += uiIdxStep )
|
|
|
622 {
|
|
|
623 UInt uiPartLeft;
|
|
|
624 TComDataCU* pcCULeft = pcCU->getPULeft( uiPartLeft, g_auiRasterToZscan[uiRasterPart] );
|
|
|
625 if(pcCU->getSlice()->getPPS()->getConstrainedIntraPred())
|
|
|
626 {
|
|
|
627 if ( pcCULeft && pcCULeft->isIntra( uiPartLeft ) )
|
|
|
628 {
|
|
|
629 iNumIntra++;
|
|
|
630 *pbValidFlags = true;
|
|
|
631 }
|
|
|
632 else
|
|
|
633 {
|
|
|
634 *pbValidFlags = false;
|
|
|
635 }
|
|
|
636 }
|
|
|
637 else
|
|
|
638 {
|
|
|
639 if ( pcCULeft )
|
|
|
640 {
|
|
|
641 iNumIntra++;
|
|
|
642 *pbValidFlags = true;
|
|
|
643 }
|
|
|
644 else
|
|
|
645 {
|
|
|
646 *pbValidFlags = false;
|
|
|
647 }
|
|
|
648 }
|
|
|
649 pbValidFlags--; // opposite direction
|
|
|
650 }
|
|
|
651
|
|
|
652 return iNumIntra;
|
|
|
653 }
|
|
|
654
|
|
|
655 Int isAboveRightAvailable( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxRT, Bool *bValidFlags )
|
|
|
656 {
|
|
|
657 const UInt uiNumUnitsInPU = g_auiZscanToRaster[uiPartIdxRT] - g_auiZscanToRaster[uiPartIdxLT] + 1;
|
|
|
658 Bool *pbValidFlags = bValidFlags;
|
|
|
659 Int iNumIntra = 0;
|
|
|
660
|
|
|
661 for ( UInt uiOffset = 1; uiOffset <= uiNumUnitsInPU; uiOffset++ )
|
|
|
662 {
|
|
|
663 UInt uiPartAboveRight;
|
|
|
664 TComDataCU* pcCUAboveRight = pcCU->getPUAboveRightAdi( uiPartAboveRight, uiPartIdxRT, uiOffset );
|
|
|
665 if(pcCU->getSlice()->getPPS()->getConstrainedIntraPred())
|
|
|
666 {
|
|
|
667 if ( pcCUAboveRight && pcCUAboveRight->isIntra( uiPartAboveRight ) )
|
|
|
668 {
|
|
|
669 iNumIntra++;
|
|
|
670 *pbValidFlags = true;
|
|
|
671 }
|
|
|
672 else
|
|
|
673 {
|
|
|
674 *pbValidFlags = false;
|
|
|
675 }
|
|
|
676 }
|
|
|
677 else
|
|
|
678 {
|
|
|
679 if ( pcCUAboveRight )
|
|
|
680 {
|
|
|
681 iNumIntra++;
|
|
|
682 *pbValidFlags = true;
|
|
|
683 }
|
|
|
684 else
|
|
|
685 {
|
|
|
686 *pbValidFlags = false;
|
|
|
687 }
|
|
|
688 }
|
|
|
689 pbValidFlags++;
|
|
|
690 }
|
|
|
691
|
|
|
692 return iNumIntra;
|
|
|
693 }
|
|
|
694
|
|
|
695 Int isBelowLeftAvailable( TComDataCU* pcCU, UInt uiPartIdxLT, UInt uiPartIdxLB, Bool *bValidFlags )
|
|
|
696 {
|
|
|
697 const UInt uiNumUnitsInPU = (g_auiZscanToRaster[uiPartIdxLB] - g_auiZscanToRaster[uiPartIdxLT]) / pcCU->getPic()->getNumPartInCtuWidth() + 1;
|
|
|
698 Bool *pbValidFlags = bValidFlags;
|
|
|
699 Int iNumIntra = 0;
|
|
|
700
|
|
|
701 for ( UInt uiOffset = 1; uiOffset <= uiNumUnitsInPU; uiOffset++ )
|
|
|
702 {
|
|
|
703 UInt uiPartBelowLeft;
|
|
|
704 TComDataCU* pcCUBelowLeft = pcCU->getPUBelowLeftAdi( uiPartBelowLeft, uiPartIdxLB, uiOffset );
|
|
|
705 if(pcCU->getSlice()->getPPS()->getConstrainedIntraPred())
|
|
|
706 {
|
|
|
707 if ( pcCUBelowLeft && pcCUBelowLeft->isIntra( uiPartBelowLeft ) )
|
|
|
708 {
|
|
|
709 iNumIntra++;
|
|
|
710 *pbValidFlags = true;
|
|
|
711 }
|
|
|
712 else
|
|
|
713 {
|
|
|
714 *pbValidFlags = false;
|
|
|
715 }
|
|
|
716 }
|
|
|
717 else
|
|
|
718 {
|
|
|
719 if ( pcCUBelowLeft )
|
|
|
720 {
|
|
|
721 iNumIntra++;
|
|
|
722 *pbValidFlags = true;
|
|
|
723 }
|
|
|
724 else
|
|
|
725 {
|
|
|
726 *pbValidFlags = false;
|
|
|
727 }
|
|
|
728 }
|
|
|
729 pbValidFlags--; // opposite direction
|
|
|
730 }
|
|
|
731
|
|
|
732 return iNumIntra;
|
|
|
733 }
|
|
|
734 //! \}
|
