| 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) 2010-2015, 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 TComWeightPrediction.h |
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| 35 | \brief weighting prediction class (header) |
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| 36 | */ |
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| 37 | |
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| 38 | // Include files |
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| 39 | #include "CommonDef.h" |
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| 40 | #include "TComYuv.h" |
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| 41 | #include "TComPic.h" |
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| 42 | #include "TComInterpolationFilter.h" |
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| 43 | #include "TComWeightPrediction.h" |
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| 44 | |
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| 45 | |
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| 46 | static inline Pel weightBidir( Int w0, Pel P0, Int w1, Pel P1, Int round, Int shift, Int offset, Int clipBD) |
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| 47 | { |
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| 48 | return ClipBD( ( (w0*(P0 + IF_INTERNAL_OFFS) + w1*(P1 + IF_INTERNAL_OFFS) + round + (offset << (shift-1))) >> shift ), clipBD ); |
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| 49 | } |
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| 50 | |
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| 51 | |
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| 52 | static inline Pel weightUnidir( Int w0, Pel P0, Int round, Int shift, Int offset, Int clipBD) |
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| 53 | { |
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| 54 | return ClipBD( ( (w0*(P0 + IF_INTERNAL_OFFS) + round) >> shift ) + offset, clipBD ); |
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| 55 | } |
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| 56 | |
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| 57 | static inline Pel noWeightUnidir( Pel P0, Int round, Int shift, Int offset, Int clipBD) |
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| 58 | { |
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| 59 | return ClipBD( ( ((P0 + IF_INTERNAL_OFFS) + round) >> shift ) + offset, clipBD ); |
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| 60 | } |
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| 61 | |
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| 62 | static inline Pel noWeightOffsetUnidir( Pel P0, Int round, Int shift, Int clipBD) |
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| 63 | { |
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| 64 | return ClipBD( ( ((P0 + IF_INTERNAL_OFFS) + round) >> shift ), clipBD ); |
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| 65 | } |
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| 66 | |
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| 67 | |
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| 68 | // ==================================================================================================================== |
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| 69 | // Class definition |
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| 70 | // ==================================================================================================================== |
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| 71 | |
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| 72 | TComWeightPrediction::TComWeightPrediction() |
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| 73 | { |
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| 74 | } |
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| 75 | |
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| 76 | |
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| 77 | //! weighted averaging for bi-pred |
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| 78 | Void TComWeightPrediction::addWeightBi( const TComYuv *pcYuvSrc0, |
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| 79 | const TComYuv *pcYuvSrc1, |
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| 80 | const BitDepths &bitDepths, |
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| 81 | const UInt iPartUnitIdx, |
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| 82 | const UInt uiWidth, |
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| 83 | const UInt uiHeight, |
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| 84 | const WPScalingParam *const wp0, |
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| 85 | const WPScalingParam *const wp1, |
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| 86 | TComYuv *const rpcYuvDst, |
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| 87 | const Bool bRoundLuma) |
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| 88 | { |
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| 89 | |
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| 90 | const Bool enableRounding[MAX_NUM_COMPONENT]={ bRoundLuma, true, true }; |
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| 91 | |
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| 92 | const UInt numValidComponent = pcYuvSrc0->getNumberValidComponents(); |
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| 93 | |
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| 94 | for(Int componentIndex=0; componentIndex<numValidComponent; componentIndex++) |
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| 95 | { |
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| 96 | const ComponentID compID=ComponentID(componentIndex); |
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| 97 | |
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| 98 | const Pel* pSrc0 = pcYuvSrc0->getAddr( compID, iPartUnitIdx ); |
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| 99 | const Pel* pSrc1 = pcYuvSrc1->getAddr( compID, iPartUnitIdx ); |
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| 100 | Pel* pDst = rpcYuvDst->getAddr( compID, iPartUnitIdx ); |
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| 101 | |
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| 102 | // Luma : -------------------------------------------- |
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| 103 | const Int w0 = wp0[compID].w; |
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| 104 | const Int offset = wp0[compID].offset; |
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| 105 | const Int clipBD = bitDepths.recon[toChannelType(compID)]; |
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| 106 | const Int shiftNum = std::max<Int>(2, (IF_INTERNAL_PREC - clipBD)); |
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| 107 | const Int shift = wp0[compID].shift + shiftNum; |
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| 108 | const Int round = (enableRounding[compID] && (shift > 0)) ? (1<<(shift-1)) : 0; |
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| 109 | const Int w1 = wp1[compID].w; |
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| 110 | const UInt csx = pcYuvSrc0->getComponentScaleX(compID); |
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| 111 | const UInt csy = pcYuvSrc0->getComponentScaleY(compID); |
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| 112 | const Int iHeight = uiHeight>>csy; |
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| 113 | const Int iWidth = uiWidth>>csx; |
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| 114 | |
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| 115 | const UInt iSrc0Stride = pcYuvSrc0->getStride(compID); |
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| 116 | const UInt iSrc1Stride = pcYuvSrc1->getStride(compID); |
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| 117 | const UInt iDstStride = rpcYuvDst->getStride(compID); |
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| 118 | |
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| 119 | for ( Int y = iHeight-1; y >= 0; y-- ) |
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| 120 | { |
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| 121 | // do it in batches of 4 (partial unroll) |
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| 122 | Int x = iWidth-1; |
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| 123 | for ( ; x >= 3; ) |
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| 124 | { |
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| 125 | pDst[x] = weightBidir(w0,pSrc0[x], w1,pSrc1[x], round, shift, offset, clipBD); x--; |
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| 126 | pDst[x] = weightBidir(w0,pSrc0[x], w1,pSrc1[x], round, shift, offset, clipBD); x--; |
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| 127 | pDst[x] = weightBidir(w0,pSrc0[x], w1,pSrc1[x], round, shift, offset, clipBD); x--; |
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| 128 | pDst[x] = weightBidir(w0,pSrc0[x], w1,pSrc1[x], round, shift, offset, clipBD); x--; |
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| 129 | } |
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| 130 | for( ; x >= 0; x-- ) |
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| 131 | { |
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| 132 | pDst[x] = weightBidir(w0,pSrc0[x], w1,pSrc1[x], round, shift, offset, clipBD); |
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| 133 | } |
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| 134 | |
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| 135 | pSrc0 += iSrc0Stride; |
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| 136 | pSrc1 += iSrc1Stride; |
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| 137 | pDst += iDstStride; |
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| 138 | } // y loop |
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| 139 | } // compID loop |
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| 140 | } |
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| 141 | |
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| 142 | |
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| 143 | //! weighted averaging for uni-pred |
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| 144 | Void TComWeightPrediction::addWeightUni( const TComYuv *const pcYuvSrc0, |
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| 145 | const BitDepths &bitDepths, |
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| 146 | const UInt iPartUnitIdx, |
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| 147 | const UInt uiWidth, |
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| 148 | const UInt uiHeight, |
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| 149 | const WPScalingParam *const wp0, |
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| 150 | TComYuv *const pcYuvDst ) |
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| 151 | { |
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| 152 | const UInt numValidComponent = pcYuvSrc0->getNumberValidComponents(); |
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| 153 | |
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| 154 | for(Int componentIndex=0; componentIndex<numValidComponent; componentIndex++) |
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| 155 | { |
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| 156 | const ComponentID compID=ComponentID(componentIndex); |
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| 157 | |
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| 158 | const Pel* pSrc0 = pcYuvSrc0->getAddr( compID, iPartUnitIdx ); |
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| 159 | Pel* pDst = pcYuvDst->getAddr( compID, iPartUnitIdx ); |
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| 160 | |
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| 161 | // Luma : -------------------------------------------- |
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| 162 | const Int w0 = wp0[compID].w; |
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| 163 | const Int offset = wp0[compID].offset; |
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| 164 | const Int clipBD = bitDepths.recon[toChannelType(compID)]; |
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| 165 | const Int shiftNum = std::max<Int>(2, (IF_INTERNAL_PREC - clipBD)); |
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| 166 | const Int shift = wp0[compID].shift + shiftNum; |
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| 167 | const UInt iSrc0Stride = pcYuvSrc0->getStride(compID); |
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| 168 | const UInt iDstStride = pcYuvDst->getStride(compID); |
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| 169 | const UInt csx = pcYuvSrc0->getComponentScaleX(compID); |
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| 170 | const UInt csy = pcYuvSrc0->getComponentScaleY(compID); |
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| 171 | const Int iHeight = uiHeight>>csy; |
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| 172 | const Int iWidth = uiWidth>>csx; |
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| 173 | |
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| 174 | if (w0 != 1 << wp0[compID].shift) |
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| 175 | { |
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| 176 | const Int round = (shift > 0) ? (1<<(shift-1)) : 0; |
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| 177 | for (Int y = iHeight-1; y >= 0; y-- ) |
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| 178 | { |
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| 179 | Int x = iWidth-1; |
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| 180 | for ( ; x >= 3; ) |
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| 181 | { |
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| 182 | pDst[x] = weightUnidir(w0, pSrc0[x], round, shift, offset, clipBD); x--; |
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| 183 | pDst[x] = weightUnidir(w0, pSrc0[x], round, shift, offset, clipBD); x--; |
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| 184 | pDst[x] = weightUnidir(w0, pSrc0[x], round, shift, offset, clipBD); x--; |
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| 185 | pDst[x] = weightUnidir(w0, pSrc0[x], round, shift, offset, clipBD); x--; |
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| 186 | } |
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| 187 | for( ; x >= 0; x--) |
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| 188 | { |
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| 189 | pDst[x] = weightUnidir(w0, pSrc0[x], round, shift, offset, clipBD); |
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| 190 | } |
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| 191 | pSrc0 += iSrc0Stride; |
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| 192 | pDst += iDstStride; |
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| 193 | } |
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| 194 | } |
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| 195 | else |
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| 196 | { |
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| 197 | const Int round = (shiftNum > 0) ? (1<<(shiftNum-1)) : 0; |
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| 198 | if (offset == 0) |
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| 199 | { |
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| 200 | for (Int y = iHeight-1; y >= 0; y-- ) |
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| 201 | { |
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| 202 | Int x = iWidth-1; |
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| 203 | for ( ; x >= 3; ) |
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| 204 | { |
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| 205 | pDst[x] = noWeightOffsetUnidir(pSrc0[x], round, shiftNum, clipBD); x--; |
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| 206 | pDst[x] = noWeightOffsetUnidir(pSrc0[x], round, shiftNum, clipBD); x--; |
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| 207 | pDst[x] = noWeightOffsetUnidir(pSrc0[x], round, shiftNum, clipBD); x--; |
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| 208 | pDst[x] = noWeightOffsetUnidir(pSrc0[x], round, shiftNum, clipBD); x--; |
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| 209 | } |
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| 210 | for( ; x >= 0; x--) |
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| 211 | { |
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| 212 | pDst[x] = noWeightOffsetUnidir(pSrc0[x], round, shiftNum, clipBD); |
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| 213 | } |
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| 214 | pSrc0 += iSrc0Stride; |
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| 215 | pDst += iDstStride; |
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| 216 | } |
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| 217 | } |
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| 218 | else |
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| 219 | { |
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| 220 | for (Int y = iHeight-1; y >= 0; y-- ) |
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| 221 | { |
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| 222 | Int x = iWidth-1; |
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| 223 | for ( ; x >= 3; ) |
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| 224 | { |
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| 225 | pDst[x] = noWeightUnidir(pSrc0[x], round, shiftNum, offset, clipBD); x--; |
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| 226 | pDst[x] = noWeightUnidir(pSrc0[x], round, shiftNum, offset, clipBD); x--; |
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| 227 | pDst[x] = noWeightUnidir(pSrc0[x], round, shiftNum, offset, clipBD); x--; |
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| 228 | pDst[x] = noWeightUnidir(pSrc0[x], round, shiftNum, offset, clipBD); x--; |
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| 229 | } |
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| 230 | for( ; x >= 0; x--) |
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| 231 | { |
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| 232 | pDst[x] = noWeightUnidir(pSrc0[x], round, shiftNum, offset, clipBD); |
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| 233 | } |
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| 234 | pSrc0 += iSrc0Stride; |
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| 235 | pDst += iDstStride; |
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| 236 | } |
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| 237 | } |
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| 238 | } |
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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 | // getWpScaling() |
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| 245 | //======================================================= |
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| 246 | //! derivation of wp tables |
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| 247 | Void TComWeightPrediction::getWpScaling( TComDataCU *const pcCU, |
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| 248 | const Int iRefIdx0, |
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| 249 | const Int iRefIdx1, |
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| 250 | WPScalingParam *&wp0, |
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| 251 | WPScalingParam *&wp1) |
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| 252 | { |
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| 253 | assert(iRefIdx0 >= 0 || iRefIdx1 >= 0); |
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| 254 | |
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| 255 | TComSlice *const pcSlice = pcCU->getSlice(); |
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| 256 | const Bool wpBiPred = pcCU->getSlice()->getPPS()->getWPBiPred(); |
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| 257 | const Bool bBiPred = (iRefIdx0>=0 && iRefIdx1>=0); |
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| 258 | const Bool bUniPred = !bBiPred; |
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| 259 | |
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| 260 | if ( bUniPred || wpBiPred ) |
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| 261 | { // explicit -------------------- |
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| 262 | if ( iRefIdx0 >= 0 ) |
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| 263 | { |
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| 264 | pcSlice->getWpScaling(REF_PIC_LIST_0, iRefIdx0, wp0); |
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| 265 | } |
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| 266 | if ( iRefIdx1 >= 0 ) |
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| 267 | { |
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| 268 | pcSlice->getWpScaling(REF_PIC_LIST_1, iRefIdx1, wp1); |
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| 269 | } |
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| 270 | } |
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| 271 | else |
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| 272 | { |
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| 273 | assert(0); |
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| 274 | } |
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| 275 | |
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| 276 | if ( iRefIdx0 < 0 ) |
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| 277 | { |
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| 278 | wp0 = NULL; |
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| 279 | } |
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| 280 | if ( iRefIdx1 < 0 ) |
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| 281 | { |
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| 282 | wp1 = NULL; |
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| 283 | } |
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| 284 | |
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| 285 | const UInt numValidComponent = pcCU->getPic()->getNumberValidComponents(); |
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| 286 | const Bool bUseHighPrecisionPredictionWeighting = pcSlice->getSPS()->getSpsRangeExtension().getHighPrecisionOffsetsEnabledFlag(); |
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| 287 | |
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| 288 | if ( bBiPred ) |
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| 289 | { // Bi-predictive case |
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| 290 | for ( Int yuv=0 ; yuv<numValidComponent ; yuv++ ) |
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| 291 | { |
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| 292 | #if SVC_EXTENSION |
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| 293 | const Int bitDepth = pcSlice->getBitDepth(toChannelType(ComponentID(yuv))); |
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| 294 | #else |
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| 295 | const Int bitDepth = pcSlice->getSPS()->getBitDepth(toChannelType(ComponentID(yuv))); |
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| 296 | #endif |
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| 297 | const Int offsetScalingFactor = bUseHighPrecisionPredictionWeighting ? 1 : (1 << (bitDepth-8)); |
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| 298 | |
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| 299 | wp0[yuv].w = wp0[yuv].iWeight; |
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| 300 | wp1[yuv].w = wp1[yuv].iWeight; |
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| 301 | wp0[yuv].o = wp0[yuv].iOffset * offsetScalingFactor; |
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| 302 | wp1[yuv].o = wp1[yuv].iOffset * offsetScalingFactor; |
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| 303 | wp0[yuv].offset = wp0[yuv].o + wp1[yuv].o; |
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| 304 | wp0[yuv].shift = wp0[yuv].uiLog2WeightDenom + 1; |
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| 305 | wp0[yuv].round = (1 << wp0[yuv].uiLog2WeightDenom); |
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| 306 | wp1[yuv].offset = wp0[yuv].offset; |
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| 307 | wp1[yuv].shift = wp0[yuv].shift; |
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| 308 | wp1[yuv].round = wp0[yuv].round; |
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| 309 | } |
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| 310 | } |
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| 311 | else |
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| 312 | { // UniPred |
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| 313 | WPScalingParam *const pwp = (iRefIdx0>=0) ? wp0 : wp1 ; |
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| 314 | |
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| 315 | for ( Int yuv=0 ; yuv<numValidComponent ; yuv++ ) |
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| 316 | { |
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| 317 | #if SVC_EXTENSION |
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| 318 | const Int bitDepth = pcSlice->getBitDepth(toChannelType(ComponentID(yuv))); |
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| 319 | #else |
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| 320 | const Int bitDepth = pcSlice->getSPS()->getBitDepth(toChannelType(ComponentID(yuv))); |
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| 321 | #endif |
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| 322 | const Int offsetScalingFactor = bUseHighPrecisionPredictionWeighting ? 1 : (1 << (bitDepth-8)); |
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| 323 | |
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| 324 | pwp[yuv].w = pwp[yuv].iWeight; |
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| 325 | pwp[yuv].offset = pwp[yuv].iOffset * offsetScalingFactor; |
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| 326 | pwp[yuv].shift = pwp[yuv].uiLog2WeightDenom; |
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| 327 | pwp[yuv].round = (pwp[yuv].uiLog2WeightDenom>=1) ? (1 << (pwp[yuv].uiLog2WeightDenom-1)) : (0); |
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| 328 | } |
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| 329 | } |
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| 330 | } |
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| 331 | |
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| 332 | |
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| 333 | //! weighted prediction for bi-pred |
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| 334 | Void TComWeightPrediction::xWeightedPredictionBi( TComDataCU *const pcCU, |
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| 335 | const TComYuv *const pcYuvSrc0, |
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| 336 | const TComYuv *const pcYuvSrc1, |
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| 337 | const Int iRefIdx0, |
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| 338 | const Int iRefIdx1, |
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| 339 | const UInt uiPartIdx, |
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| 340 | const Int iWidth, |
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| 341 | const Int iHeight, |
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| 342 | TComYuv *rpcYuvDst ) |
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| 343 | { |
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| 344 | WPScalingParam *pwp0; |
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| 345 | WPScalingParam *pwp1; |
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| 346 | |
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| 347 | assert(pcCU->getSlice()->getPPS()->getWPBiPred()); |
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| 348 | |
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| 349 | getWpScaling(pcCU, iRefIdx0, iRefIdx1, pwp0, pwp1); |
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| 350 | |
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| 351 | if( iRefIdx0 >= 0 && iRefIdx1 >= 0 ) |
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| 352 | { |
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| 353 | #if SVC_EXTENSION |
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| 354 | addWeightBi(pcYuvSrc0, pcYuvSrc1, pcCU->getSlice()->getBitDepths(), uiPartIdx, iWidth, iHeight, pwp0, pwp1, rpcYuvDst ); |
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| 355 | #else |
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| 356 | addWeightBi(pcYuvSrc0, pcYuvSrc1, pcCU->getSlice()->getSPS()->getBitDepths(), uiPartIdx, iWidth, iHeight, pwp0, pwp1, rpcYuvDst ); |
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| 357 | #endif |
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| 358 | } |
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| 359 | else if ( iRefIdx0 >= 0 && iRefIdx1 < 0 ) |
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| 360 | { |
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| 361 | #if SVC_EXTENSION |
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| 362 | addWeightUni( pcYuvSrc0, pcCU->getSlice()->getBitDepths(), uiPartIdx, iWidth, iHeight, pwp0, rpcYuvDst ); |
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| 363 | #else |
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| 364 | addWeightUni( pcYuvSrc0, pcCU->getSlice()->getSPS()->getBitDepths(), uiPartIdx, iWidth, iHeight, pwp0, rpcYuvDst ); |
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| 365 | #endif |
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| 366 | } |
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| 367 | else if ( iRefIdx0 < 0 && iRefIdx1 >= 0 ) |
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| 368 | { |
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| 369 | #if SVC_EXTENSION |
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| 370 | addWeightUni( pcYuvSrc1, pcCU->getSlice()->getBitDepths(), uiPartIdx, iWidth, iHeight, pwp1, rpcYuvDst ); |
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| 371 | #else |
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| 372 | addWeightUni( pcYuvSrc1, pcCU->getSlice()->getSPS()->getBitDepths(), uiPartIdx, iWidth, iHeight, pwp1, rpcYuvDst ); |
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| 373 | #endif |
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| 374 | } |
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| 375 | else |
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| 376 | { |
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| 377 | assert (0); |
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| 378 | } |
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| 379 | } |
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| 380 | |
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| 381 | |
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| 382 | //! weighted prediction for uni-pred |
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| 383 | Void TComWeightPrediction::xWeightedPredictionUni( TComDataCU *const pcCU, |
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| 384 | const TComYuv *const pcYuvSrc, |
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| 385 | const UInt uiPartAddr, |
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| 386 | const Int iWidth, |
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| 387 | const Int iHeight, |
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| 388 | const RefPicList eRefPicList, |
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| 389 | TComYuv *pcYuvPred, |
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| 390 | const Int iRefIdx_input) |
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| 391 | { |
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| 392 | WPScalingParam *pwp, *pwpTmp; |
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| 393 | |
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| 394 | Int iRefIdx=iRefIdx_input; |
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| 395 | if ( iRefIdx < 0 ) |
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| 396 | { |
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| 397 | iRefIdx = pcCU->getCUMvField( eRefPicList )->getRefIdx( uiPartAddr ); |
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| 398 | } |
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| 399 | assert (iRefIdx >= 0); |
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| 400 | |
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| 401 | if ( eRefPicList == REF_PIC_LIST_0 ) |
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| 402 | { |
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| 403 | getWpScaling(pcCU, iRefIdx, -1, pwp, pwpTmp); |
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| 404 | } |
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| 405 | else |
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| 406 | { |
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| 407 | getWpScaling(pcCU, -1, iRefIdx, pwpTmp, pwp); |
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| 408 | } |
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| 409 | #if SVC_EXTENSION |
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| 410 | addWeightUni( pcYuvSrc, pcCU->getSlice()->getBitDepths(), uiPartAddr, iWidth, iHeight, pwp, pcYuvPred ); |
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| 411 | #else |
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| 412 | addWeightUni( pcYuvSrc, pcCU->getSlice()->getSPS()->getBitDepths(), uiPartAddr, iWidth, iHeight, pwp, pcYuvPred ); |
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| 413 | #endif |
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| 414 | } |
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