[x265] [PATCH] cleanup: simplify slice ref lists; moving shared offset buffers into SPS

Pradeep pradeep at multicorewareinc.com
Wed Aug 12 16:05:22 CEST 2015


# HG changeset patch
# User Pradeep
# Date 1439388222 0
#      Wed Aug 12 14:03:42 2015 +0000
# Node ID 390992e54c4ea4c8a08cb172dacd0006064e6f40
# Parent  c4d75c9585e4b024b185c3affe8edfb7079e19e7
cleanup: simplify slice ref lists; moving shared offset buffers into SPS

(this is part 1 of Steve's experimental patches)

Rename slice.m_refPicList to m_refFrameList since it is an array of Frame
pointers, and make a new slice.m_refReconPicList array which points directly
to the motion reference PicYuv buffers (bypassing the Frame structure)

The shared offset buffers were moved from the top-level encoder into the SPS
structure so the FrameData functions could use them directly (avoiding a major
layering violations). The offset buffers are computed based on SPS values, so it
seems minimally ugly to keep them there.

diff -r c4d75c9585e4 -r 390992e54c4e source/common/cudata.cpp
--- a/source/common/cudata.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/common/cudata.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -1676,7 +1676,7 @@
         if (tempRefIdx != -1)
         {
             uint32_t cuAddr = neighbours[MD_COLLOCATED].cuAddr[picList];
-            const Frame* colPic = m_slice->m_refPicList[m_slice->isInterB() && !m_slice->m_colFromL0Flag][m_slice->m_colRefIdx];
+            const Frame* colPic = m_slice->m_refFrameList[m_slice->isInterB() && !m_slice->m_colFromL0Flag][m_slice->m_colRefIdx];
             const CUData* colCU = colPic->m_encData->getPicCTU(cuAddr);
 
             // Scale the vector
@@ -1857,7 +1857,7 @@
 
 bool CUData::getColMVP(MV& outMV, int& outRefIdx, int picList, int cuAddr, int partUnitIdx) const
 {
-    const Frame* colPic = m_slice->m_refPicList[m_slice->isInterB() && !m_slice->m_colFromL0Flag][m_slice->m_colRefIdx];
+    const Frame* colPic = m_slice->m_refFrameList[m_slice->isInterB() && !m_slice->m_colFromL0Flag][m_slice->m_colRefIdx];
     const CUData* colCU = colPic->m_encData->getPicCTU(cuAddr);
 
     uint32_t absPartAddr = partUnitIdx & TMVP_UNIT_MASK;
@@ -1892,7 +1892,7 @@
 // Cache the collocated MV.
 bool CUData::getCollocatedMV(int cuAddr, int partUnitIdx, InterNeighbourMV *neighbour) const
 {
-    const Frame* colPic = m_slice->m_refPicList[m_slice->isInterB() && !m_slice->m_colFromL0Flag][m_slice->m_colRefIdx];
+    const Frame* colPic = m_slice->m_refFrameList[m_slice->isInterB() && !m_slice->m_colFromL0Flag][m_slice->m_colRefIdx];
     const CUData* colCU = colPic->m_encData->getPicCTU(cuAddr);
 
     uint32_t absPartAddr = partUnitIdx & TMVP_UNIT_MASK;
diff -r c4d75c9585e4 -r 390992e54c4e source/common/deblock.cpp
--- a/source/common/deblock.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/common/deblock.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -209,8 +209,8 @@
     const Slice* const sliceQ = cuQ->m_slice;
     const Slice* const sliceP = cuP->m_slice;
 
-    const Frame* refP0 = sliceP->getRefPic(0, cuP->m_refIdx[0][partP]);
-    const Frame* refQ0 = sliceQ->getRefPic(0, cuQ->m_refIdx[0][partQ]);
+    const Frame* refP0 = sliceP->m_refFrameList[0][cuP->m_refIdx[0][partP]];
+    const Frame* refQ0 = sliceQ->m_refFrameList[0][cuQ->m_refIdx[0][partQ]];
     const MV& mvP0 = refP0 ? cuP->m_mv[0][partP] : zeroMv;
     const MV& mvQ0 = refQ0 ? cuQ->m_mv[0][partQ] : zeroMv;
 
@@ -221,8 +221,8 @@
     }
 
     // (sliceQ->isInterB() || sliceP->isInterB())
-    const Frame* refP1 = sliceP->getRefPic(1, cuP->m_refIdx[1][partP]);
-    const Frame* refQ1 = sliceQ->getRefPic(1, cuQ->m_refIdx[1][partQ]);
+    const Frame* refP1 = sliceP->m_refFrameList[1][cuP->m_refIdx[1][partP]];
+    const Frame* refQ1 = sliceQ->m_refFrameList[1][cuQ->m_refIdx[1][partQ]];
     const MV& mvP1 = refP1 ? cuP->m_mv[1][partP] : zeroMv;
     const MV& mvQ1 = refQ1 ? cuQ->m_mv[1][partQ] : zeroMv;
 
diff -r c4d75c9585e4 -r 390992e54c4e source/common/frame.cpp
--- a/source/common/frame.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/common/frame.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -57,7 +57,7 @@
     m_encData = new FrameData;
     m_reconPic = new PicYuv;
     m_encData->m_reconPic = m_reconPic;
-    bool ok = m_encData->create(param, sps) && m_reconPic->create(param->sourceWidth, param->sourceHeight, param->internalCsp);
+    bool ok = m_encData->create(*param, sps) && m_reconPic->create(param->sourceWidth, param->sourceHeight, param->internalCsp);
     if (ok)
     {
         /* initialize right border of m_reconpicYuv as SAO may read beyond the
@@ -66,6 +66,12 @@
         memset(m_reconPic->m_picOrg[0], 0, sizeof(pixel) * m_reconPic->m_stride * maxHeight);
         memset(m_reconPic->m_picOrg[1], 0, sizeof(pixel) * m_reconPic->m_strideC * (maxHeight >> m_reconPic->m_vChromaShift));
         memset(m_reconPic->m_picOrg[2], 0, sizeof(pixel) * m_reconPic->m_strideC * (maxHeight >> m_reconPic->m_vChromaShift));
+
+        /* use pre-calculated cu/pu offsets cached in the SPS structure */
+        m_reconPic->m_cuOffsetC = sps.cuOffsetC;
+        m_reconPic->m_cuOffsetY = sps.cuOffsetY;
+        m_reconPic->m_buOffsetC = sps.buOffsetC;
+        m_reconPic->m_buOffsetY = sps.buOffsetY;
     }
     return ok;
 }
diff -r c4d75c9585e4 -r 390992e54c4e source/common/framedata.cpp
--- a/source/common/framedata.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/common/framedata.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -31,15 +31,15 @@
     memset(this, 0, sizeof(*this));
 }
 
-bool FrameData::create(x265_param *param, const SPS& sps)
+bool FrameData::create(const x265_param& param, const SPS& sps)
 {
-    m_param = param;
+    m_param = ¶m;
     m_slice  = new Slice;
     m_picCTU = new CUData[sps.numCUsInFrame];
 
-    m_cuMemPool.create(0, param->internalCsp, sps.numCUsInFrame);
+    m_cuMemPool.create(0, param.internalCsp, sps.numCUsInFrame);
     for (uint32_t ctuAddr = 0; ctuAddr < sps.numCUsInFrame; ctuAddr++)
-        m_picCTU[ctuAddr].initialize(m_cuMemPool, 0, param->internalCsp, ctuAddr);
+        m_picCTU[ctuAddr].initialize(m_cuMemPool, 0, param.internalCsp, ctuAddr);
 
     CHECKED_MALLOC(m_cuStat, RCStatCU, sps.numCUsInFrame);
     CHECKED_MALLOC(m_rowStat, RCStatRow, sps.numCuInHeight);
diff -r c4d75c9585e4 -r 390992e54c4e source/common/framedata.h
--- a/source/common/framedata.h	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/common/framedata.h	Wed Aug 12 14:03:42 2015 +0000
@@ -96,7 +96,7 @@
 
     Slice*         m_slice;
     SAOParam*      m_saoParam;
-    x265_param*    m_param;
+    const x265_param* m_param;
 
     FrameData*     m_freeListNext;
     PicYuv*        m_reconPic;
@@ -142,11 +142,11 @@
 
     FrameData();
 
-    bool create(x265_param *param, const SPS& sps);
+    bool create(const x265_param& param, const SPS& sps);
     void reinit(const SPS& sps);
     void destroy();
 
-    CUData* getPicCTU(uint32_t ctuAddr) { return &m_picCTU[ctuAddr]; }
+    inline CUData* getPicCTU(uint32_t ctuAddr) { return &m_picCTU[ctuAddr]; }
 };
 }
 
diff -r c4d75c9585e4 -r 390992e54c4e source/common/predict.cpp
--- a/source/common/predict.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/common/predict.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -109,18 +109,18 @@
             ShortYuv& shortYuv = m_predShortYuv[0];
 
             if (bLuma)
-                predInterLumaShort(pu, shortYuv, *cu.m_slice->m_refPicList[0][refIdx0]->m_reconPic, mv0);
+                predInterLumaShort(pu, shortYuv, *cu.m_slice->m_refReconPicList[0][refIdx0], mv0);
             if (bChroma)
-                predInterChromaShort(pu, shortYuv, *cu.m_slice->m_refPicList[0][refIdx0]->m_reconPic, mv0);
+                predInterChromaShort(pu, shortYuv, *cu.m_slice->m_refReconPicList[0][refIdx0], mv0);
 
             addWeightUni(pu, predYuv, shortYuv, wv0, bLuma, bChroma);
         }
         else
         {
             if (bLuma)
-                predInterLumaPixel(pu, predYuv, *cu.m_slice->m_refPicList[0][refIdx0]->m_reconPic, mv0);
+                predInterLumaPixel(pu, predYuv, *cu.m_slice->m_refReconPicList[0][refIdx0], mv0);
             if (bChroma)
-                predInterChromaPixel(pu, predYuv, *cu.m_slice->m_refPicList[0][refIdx0]->m_reconPic, mv0);
+                predInterChromaPixel(pu, predYuv, *cu.m_slice->m_refReconPicList[0][refIdx0], mv0);
         }
     }
     else
@@ -179,13 +179,13 @@
 
             if (bLuma)
             {
-                predInterLumaShort(pu, m_predShortYuv[0], *cu.m_slice->m_refPicList[0][refIdx0]->m_reconPic, mv0);
-                predInterLumaShort(pu, m_predShortYuv[1], *cu.m_slice->m_refPicList[1][refIdx1]->m_reconPic, mv1);
+                predInterLumaShort(pu, m_predShortYuv[0], *cu.m_slice->m_refReconPicList[0][refIdx0], mv0);
+                predInterLumaShort(pu, m_predShortYuv[1], *cu.m_slice->m_refReconPicList[1][refIdx1], mv1);
             }
             if (bChroma)
             {
-                predInterChromaShort(pu, m_predShortYuv[0], *cu.m_slice->m_refPicList[0][refIdx0]->m_reconPic, mv0);
-                predInterChromaShort(pu, m_predShortYuv[1], *cu.m_slice->m_refPicList[1][refIdx1]->m_reconPic, mv1);
+                predInterChromaShort(pu, m_predShortYuv[0], *cu.m_slice->m_refReconPicList[0][refIdx0], mv0);
+                predInterChromaShort(pu, m_predShortYuv[1], *cu.m_slice->m_refReconPicList[1][refIdx1], mv1);
             }
 
             if (pwp0 && pwp1 && (pwp0->bPresentFlag || pwp1->bPresentFlag))
@@ -203,18 +203,18 @@
                 ShortYuv& shortYuv = m_predShortYuv[0];
 
                 if (bLuma)
-                    predInterLumaShort(pu, shortYuv, *cu.m_slice->m_refPicList[0][refIdx0]->m_reconPic, mv0);
+                    predInterLumaShort(pu, shortYuv, *cu.m_slice->m_refReconPicList[0][refIdx0], mv0);
                 if (bChroma)
-                    predInterChromaShort(pu, shortYuv, *cu.m_slice->m_refPicList[0][refIdx0]->m_reconPic, mv0);
+                    predInterChromaShort(pu, shortYuv, *cu.m_slice->m_refReconPicList[0][refIdx0], mv0);
 
                 addWeightUni(pu, predYuv, shortYuv, wv0, bLuma, bChroma);
             }
             else
             {
                 if (bLuma)
-                    predInterLumaPixel(pu, predYuv, *cu.m_slice->m_refPicList[0][refIdx0]->m_reconPic, mv0);
+                    predInterLumaPixel(pu, predYuv, *cu.m_slice->m_refReconPicList[0][refIdx0], mv0);
                 if (bChroma)
-                    predInterChromaPixel(pu, predYuv, *cu.m_slice->m_refPicList[0][refIdx0]->m_reconPic, mv0);
+                    predInterChromaPixel(pu, predYuv, *cu.m_slice->m_refReconPicList[0][refIdx0], mv0);
             }
         }
         else
@@ -230,18 +230,18 @@
                 ShortYuv& shortYuv = m_predShortYuv[0];
 
                 if (bLuma)
-                    predInterLumaShort(pu, shortYuv, *cu.m_slice->m_refPicList[1][refIdx1]->m_reconPic, mv1);
+                    predInterLumaShort(pu, shortYuv, *cu.m_slice->m_refReconPicList[1][refIdx1], mv1);
                 if (bChroma)
-                    predInterChromaShort(pu, shortYuv, *cu.m_slice->m_refPicList[1][refIdx1]->m_reconPic, mv1);
+                    predInterChromaShort(pu, shortYuv, *cu.m_slice->m_refReconPicList[1][refIdx1], mv1);
 
                 addWeightUni(pu, predYuv, shortYuv, wv0, bLuma, bChroma);
             }
             else
             {
                 if (bLuma)
-                    predInterLumaPixel(pu, predYuv, *cu.m_slice->m_refPicList[1][refIdx1]->m_reconPic, mv1);
+                    predInterLumaPixel(pu, predYuv, *cu.m_slice->m_refReconPicList[1][refIdx1], mv1);
                 if (bChroma)
-                    predInterChromaPixel(pu, predYuv, *cu.m_slice->m_refPicList[1][refIdx1]->m_reconPic, mv1);
+                    predInterChromaPixel(pu, predYuv, *cu.m_slice->m_refReconPicList[1][refIdx1], mv1);
             }
         }
     }
@@ -600,8 +600,9 @@
     int tuSize = 1 << intraNeighbors.log2TrSize;
     int tuSize2 = tuSize << 1;
 
-    pixel* adiOrigin = cu.m_encData->m_reconPic->getLumaAddr(cu.m_cuAddr, cuGeom.absPartIdx + puAbsPartIdx);
-    intptr_t picStride = cu.m_encData->m_reconPic->m_stride;
+    PicYuv* reconPic = cu.m_encData->m_reconPic;
+    pixel* adiOrigin = reconPic->getLumaAddr(cu.m_cuAddr, cuGeom.absPartIdx + puAbsPartIdx);
+    intptr_t picStride = reconPic->m_stride;
 
     fillReferenceSamples(adiOrigin, picStride, intraNeighbors, intraNeighbourBuf[0]);
 
@@ -648,8 +649,9 @@
 
 void Predict::initAdiPatternChroma(const CUData& cu, const CUGeom& cuGeom, uint32_t puAbsPartIdx, const IntraNeighbors& intraNeighbors, uint32_t chromaId)
 {
-    const pixel* adiOrigin = cu.m_encData->m_reconPic->getChromaAddr(chromaId, cu.m_cuAddr, cuGeom.absPartIdx + puAbsPartIdx);
-    intptr_t picStride = cu.m_encData->m_reconPic->m_strideC;
+    PicYuv* reconPic = cu.m_encData->m_reconPic;
+    const pixel* adiOrigin = reconPic->getChromaAddr(chromaId, cu.m_cuAddr, cuGeom.absPartIdx + puAbsPartIdx);
+    intptr_t picStride = reconPic->m_strideC;
 
     fillReferenceSamples(adiOrigin, picStride, intraNeighbors, intraNeighbourBuf[0]);
 
diff -r c4d75c9585e4 -r 390992e54c4e source/common/slice.cpp
--- a/source/common/slice.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/common/slice.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -33,7 +33,9 @@
 {
     if (m_sliceType == I_SLICE)
     {
-        memset(m_refPicList, 0, sizeof(m_refPicList));
+        memset(m_refFrameList, 0, sizeof(m_refFrameList));
+        memset(m_refReconPicList, 0, sizeof(m_refReconPicList));
+        memset(m_refPOCList, 0, sizeof(m_refPOCList));
         m_numRefIdx[1] = m_numRefIdx[0] = 0;
         return;
     }
@@ -106,13 +108,13 @@
     {
         cIdx = rIdx % numPocTotalCurr;
         X265_CHECK(cIdx >= 0 && cIdx < numPocTotalCurr, "RPS index check fail\n");
-        m_refPicList[0][rIdx] = rpsCurrList0[cIdx];
+        m_refFrameList[0][rIdx] = rpsCurrList0[cIdx];
     }
 
     if (m_sliceType != B_SLICE)
     {
         m_numRefIdx[1] = 0;
-        memset(m_refPicList[1], 0, sizeof(m_refPicList[1]));
+        memset(m_refFrameList[1], 0, sizeof(m_refFrameList[1]));
     }
     else
     {
@@ -120,13 +122,13 @@
         {
             cIdx = rIdx % numPocTotalCurr;
             X265_CHECK(cIdx >= 0 && cIdx < numPocTotalCurr, "RPS index check fail\n");
-            m_refPicList[1][rIdx] = rpsCurrList1[cIdx];
+            m_refFrameList[1][rIdx] = rpsCurrList1[cIdx];
         }
     }
 
     for (int dir = 0; dir < 2; dir++)
         for (int numRefIdx = 0; numRefIdx < m_numRefIdx[dir]; numRefIdx++)
-            m_refPOCList[dir][numRefIdx] = m_refPicList[dir][numRefIdx]->m_poc;
+            m_refPOCList[dir][numRefIdx] = m_refFrameList[dir][numRefIdx]->m_poc;
 }
 
 void Slice::disableWeights()
diff -r c4d75c9585e4 -r 390992e54c4e source/common/slice.h
--- a/source/common/slice.h	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/common/slice.h	Wed Aug 12 14:03:42 2015 +0000
@@ -31,6 +31,7 @@
 
 class Frame;
 class PicList;
+class PicYuv;
 class MotionReference;
 
 enum SliceType
@@ -209,6 +210,13 @@
 
 struct SPS
 {
+    /* cached PicYuv offset arrays, shared by all instances of
+     * PicYuv created by this encoder */
+    intptr_t* cuOffsetY;
+    intptr_t* cuOffsetC;
+    intptr_t* buOffsetY;
+    intptr_t* buOffsetC;
+
     int      chromaFormatIdc;        // use param
     uint32_t picWidthInLumaSamples;  // use param
     uint32_t picHeightInLumaSamples; // use param
@@ -242,6 +250,19 @@
 
     Window   conformanceWindow;
     VUI      vuiParameters;
+
+    SPS()
+    {
+        memset(this, 0, sizeof(*this));
+    }
+
+    ~SPS()
+    {
+        X265_FREE(cuOffsetY);
+        X265_FREE(cuOffsetC);
+        X265_FREE(buOffsetY);
+        X265_FREE(buOffsetC);
+    }
 };
 
 struct PPS
@@ -321,7 +342,8 @@
     uint32_t    m_colRefIdx;       // never modified
     
     int         m_numRefIdx[2];
-    Frame*      m_refPicList[2][MAX_NUM_REF + 1];
+    Frame*      m_refFrameList[2][MAX_NUM_REF + 1];
+    PicYuv*     m_refReconPicList[2][MAX_NUM_REF + 1];
     int         m_refPOCList[2][MAX_NUM_REF + 1];
 
     uint32_t    m_maxNumMergeCand; // use param
@@ -332,14 +354,9 @@
         m_lastIDR = 0;
         m_sLFaseFlag = true;
         m_numRefIdx[0] = m_numRefIdx[1] = 0;
-        for (int i = 0; i < MAX_NUM_REF; i++)
-        {
-            m_refPicList[0][i] = NULL;
-            m_refPicList[1][i] = NULL;
-            m_refPOCList[0][i] = 0;
-            m_refPOCList[1][i] = 0;
-        }
-
+        memset(m_refFrameList, 0, sizeof(m_refFrameList));
+        memset(m_refReconPicList, 0, sizeof(m_refReconPicList));
+        memset(m_refPOCList, 0, sizeof(m_refPOCList));
         disableWeights();
     }
 
@@ -347,8 +364,6 @@
 
     void setRefPicList(PicList& picList);
 
-    const Frame* getRefPic(int list, int refIdx) const { return refIdx >= 0 ? m_refPicList[list][refIdx] : NULL; }
-
     bool getRapPicFlag() const
     {
         return m_nalUnitType == NAL_UNIT_CODED_SLICE_IDR_W_RADL
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/analysis.cpp
--- a/source/encoder/analysis.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/analysis.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -757,6 +757,8 @@
     ModeDepth& md = m_modeDepth[depth];
     md.bestMode = NULL;
 
+    PicYuv& reconPic = *m_frame->m_reconPic;
+
     bool mightSplit = !(cuGeom.flags & CUGeom::LEAF);
     bool mightNotSplit = !(cuGeom.flags & CUGeom::SPLIT_MANDATORY);
     uint32_t minDepth = topSkipMinDepth(parentCTU, cuGeom);
@@ -1051,7 +1053,7 @@
                         residualTransformQuantIntra(*md.bestMode, cuGeom, 0, 0, tuDepthRange);
                         getBestIntraModeChroma(*md.bestMode, cuGeom);
                         residualQTIntraChroma(*md.bestMode, cuGeom, 0, 0);
-                        md.bestMode->reconYuv.copyFromPicYuv(*m_frame->m_reconPic, cu.m_cuAddr, cuGeom.absPartIdx); // TODO:
+                        md.bestMode->reconYuv.copyFromPicYuv(reconPic, cu.m_cuAddr, cuGeom.absPartIdx); // TODO:
                     }
                 }
             }
@@ -1107,7 +1109,7 @@
     X265_CHECK(md.bestMode->ok(), "best mode is not ok");
     md.bestMode->cu.copyToPic(depth);
     if (m_param->rdLevel)
-        md.bestMode->reconYuv.copyToPicYuv(*m_frame->m_reconPic, cuAddr, cuGeom.absPartIdx);
+        md.bestMode->reconYuv.copyToPicYuv(reconPic, cuAddr, cuGeom.absPartIdx);
 
     return refMask;
 }
@@ -1851,6 +1853,8 @@
 
     cu.copyFromPic(ctu, cuGeom);
 
+    PicYuv& reconPic = *m_frame->m_reconPic;
+
     Yuv& fencYuv = m_modeDepth[cuGeom.depth].fencYuv;
     if (cuGeom.depth)
         m_modeDepth[0].fencYuv.copyPartToYuv(fencYuv, absPartIdx);
@@ -1906,7 +1910,6 @@
         /* residualTransformQuantInter() wrote transformed residual back into
          * resiYuv. Generate the recon pixels by adding it to the prediction */
 
-        PicYuv& reconPic = *m_frame->m_reconPic;
         if (cu.m_cbf[0][0])
             primitives.cu[sizeIdx].add_ps(reconPic.getLumaAddr(cu.m_cuAddr, absPartIdx), reconPic.m_stride,
                                           predY, resiYuv.m_buf[0], predYuv.m_size, resiYuv.m_size);
@@ -1969,7 +1972,7 @@
     if (m_slice->m_numRefIdx[0])
     {
         numRefs++;
-        const CUData& cu = *m_slice->m_refPicList[0][0]->m_encData->getPicCTU(parentCTU.m_cuAddr);
+        const CUData& cu = *m_slice->m_refFrameList[0][0]->m_encData->getPicCTU(parentCTU.m_cuAddr);
         previousQP = cu.m_qp[0];
         if (!cu.m_cuDepth[cuGeom.absPartIdx])
             return 0;
@@ -1983,7 +1986,7 @@
     if (m_slice->m_numRefIdx[1])
     {
         numRefs++;
-        const CUData& cu = *m_slice->m_refPicList[1][0]->m_encData->getPicCTU(parentCTU.m_cuAddr);
+        const CUData& cu = *m_slice->m_refFrameList[1][0]->m_encData->getPicCTU(parentCTU.m_cuAddr);
         if (!cu.m_cuDepth[cuGeom.absPartIdx])
             return 0;
         for (uint32_t i = 0; i < cuGeom.numPartitions; i += 4)
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/dpb.cpp
--- a/source/encoder/dpb.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/dpb.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -47,16 +47,16 @@
         delete curFrame;
     }
 
-    while (m_picSymFreeList)
+    while (m_frameDataFreeList)
     {
-        FrameData* next = m_picSymFreeList->m_freeListNext;
-        m_picSymFreeList->destroy();
+        FrameData* next = m_frameDataFreeList->m_freeListNext;
+        m_frameDataFreeList->destroy();
 
-        m_picSymFreeList->m_reconPic->destroy();
-        delete m_picSymFreeList->m_reconPic;
+        m_frameDataFreeList->m_reconPic->destroy();
+        delete m_frameDataFreeList->m_reconPic;
 
-        delete m_picSymFreeList;
-        m_picSymFreeList = next;
+        delete m_frameDataFreeList;
+        m_frameDataFreeList = next;
     }
 }
 
@@ -79,8 +79,8 @@
             iterFrame = m_picList.first();
 
             m_freeList.pushBack(*curFrame);
-            curFrame->m_encData->m_freeListNext = m_picSymFreeList;
-            m_picSymFreeList = curFrame->m_encData;
+            curFrame->m_encData->m_freeListNext = m_frameDataFreeList;
+            m_frameDataFreeList = curFrame->m_encData;
             curFrame->m_encData = NULL;
             curFrame->m_reconPic = NULL;
         }
@@ -171,7 +171,7 @@
     {
         for (int ref = 0; ref < slice->m_numRefIdx[l]; ref++)
         {
-            Frame *refpic = slice->m_refPicList[l][ref];
+            Frame *refpic = slice->m_refFrameList[l][ref];
             ATOMIC_INC(&refpic->m_countRefEncoders);
         }
     }
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/dpb.h
--- a/source/encoder/dpb.h	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/dpb.h	Wed Aug 12 14:03:42 2015 +0000
@@ -46,14 +46,14 @@
     bool               m_bTemporalSublayer;
     PicList            m_picList;
     PicList            m_freeList;
-    FrameData*         m_picSymFreeList;
+    FrameData*         m_frameDataFreeList;
 
     DPB(x265_param *param)
     {
         m_lastIDR = 0;
         m_pocCRA = 0;
         m_bRefreshPending = false;
-        m_picSymFreeList = NULL;
+        m_frameDataFreeList = NULL;
         m_maxRefL0 = param->maxNumReferences;
         m_maxRefL1 = param->bBPyramid ? 2 : 1;
         m_bOpenGOP = param->bOpenGOP;
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/encoder.cpp
--- a/source/encoder/encoder.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/encoder.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -66,10 +66,6 @@
     m_outputCount = 0;
     m_param = NULL;
     m_latestParam = NULL;
-    m_cuOffsetY = NULL;
-    m_cuOffsetC = NULL;
-    m_buOffsetY = NULL;
-    m_buOffsetC = NULL;
     m_threadPool = NULL;
     m_analysisFile = NULL;
     for (int i = 0; i < X265_MAX_FRAME_THREADS; i++)
@@ -318,11 +314,6 @@
         delete m_rateControl;
     }
 
-    X265_FREE(m_cuOffsetY);
-    X265_FREE(m_cuOffsetC);
-    X265_FREE(m_buOffsetY);
-    X265_FREE(m_buOffsetC);
-
     if (m_analysisFile)
         fclose(m_analysisFile);
 
@@ -417,12 +408,12 @@
                 /* the first PicYuv created is asked to generate the CU and block unit offset
                  * arrays which are then shared with all subsequent PicYuv (orig and recon) 
                  * allocated by this top level encoder */
-                if (m_cuOffsetY)
+                if (m_sps.cuOffsetY)
                 {
-                    inFrame->m_fencPic->m_cuOffsetC = m_cuOffsetC;
-                    inFrame->m_fencPic->m_cuOffsetY = m_cuOffsetY;
-                    inFrame->m_fencPic->m_buOffsetC = m_buOffsetC;
-                    inFrame->m_fencPic->m_buOffsetY = m_buOffsetY;
+                    inFrame->m_fencPic->m_cuOffsetC = m_sps.cuOffsetC;
+                    inFrame->m_fencPic->m_cuOffsetY = m_sps.cuOffsetY;
+                    inFrame->m_fencPic->m_buOffsetC = m_sps.buOffsetC;
+                    inFrame->m_fencPic->m_buOffsetY = m_sps.buOffsetY;
                 }
                 else
                 {
@@ -436,10 +427,10 @@
                     }
                     else
                     {
-                        m_cuOffsetC = inFrame->m_fencPic->m_cuOffsetC;
-                        m_cuOffsetY = inFrame->m_fencPic->m_cuOffsetY;
-                        m_buOffsetC = inFrame->m_fencPic->m_buOffsetC;
-                        m_buOffsetY = inFrame->m_fencPic->m_buOffsetY;
+                        m_sps.cuOffsetC = inFrame->m_fencPic->m_cuOffsetC;
+                        m_sps.cuOffsetY = inFrame->m_fencPic->m_cuOffsetY;
+                        m_sps.buOffsetC = inFrame->m_fencPic->m_buOffsetC;
+                        m_sps.buOffsetY = inFrame->m_fencPic->m_buOffsetY;
                     }
                 }
                 if (pic_in->quantOffsets != NULL)
@@ -641,10 +632,10 @@
         if (frameEnc && !pass)
         {
             /* give this frame a FrameData instance before encoding */
-            if (m_dpb->m_picSymFreeList)
+            if (m_dpb->m_frameDataFreeList)
             {
-                frameEnc->m_encData = m_dpb->m_picSymFreeList;
-                m_dpb->m_picSymFreeList = m_dpb->m_picSymFreeList->m_freeListNext;
+                frameEnc->m_encData = m_dpb->m_frameDataFreeList;
+                m_dpb->m_frameDataFreeList = m_dpb->m_frameDataFreeList->m_freeListNext;
                 frameEnc->reinit(m_sps);
             }
             else
@@ -655,10 +646,6 @@
                 slice->m_pps = &m_pps;
                 slice->m_maxNumMergeCand = m_param->maxNumMergeCand;
                 slice->m_endCUAddr = slice->realEndAddress(m_sps.numCUsInFrame * NUM_4x4_PARTITIONS);
-                frameEnc->m_reconPic->m_cuOffsetC = m_cuOffsetC;
-                frameEnc->m_reconPic->m_cuOffsetY = m_cuOffsetY;
-                frameEnc->m_reconPic->m_buOffsetC = m_buOffsetC;
-                frameEnc->m_reconPic->m_buOffsetY = m_buOffsetY;
             }
 
             curEncoder->m_rce.encodeOrder = m_encodedFrameNum++;
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/encoder.h
--- a/source/encoder/encoder.h	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/encoder.h	Wed Aug 12 14:03:42 2015 +0000
@@ -93,13 +93,6 @@
     int                m_numPools;
     int                m_curEncoder;
 
-    /* cached PicYuv offset arrays, shared by all instances of
-     * PicYuv created by this encoder */
-    intptr_t*          m_cuOffsetY;
-    intptr_t*          m_cuOffsetC;
-    intptr_t*          m_buOffsetY;
-    intptr_t*          m_buOffsetC;
-
     /* Collect statistics globally */
     EncStats           m_analyzeAll;
     EncStats           m_analyzeI;
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/frameencoder.cpp
--- a/source/encoder/frameencoder.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/frameencoder.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -357,7 +357,8 @@
             WeightParam *w = NULL;
             if ((bUseWeightP || bUseWeightB) && slice->m_weightPredTable[l][ref][0].bPresentFlag)
                 w = slice->m_weightPredTable[l][ref];
-            m_mref[l][ref].init(slice->m_refPicList[l][ref]->m_reconPic, w, *m_param);
+            slice->m_refReconPicList[l][ref] = slice->m_refFrameList[l][ref]->m_reconPic;
+            m_mref[l][ref].init(slice->m_refReconPicList[l][ref], w, *m_param);
         }
     }
 
@@ -477,7 +478,7 @@
     /* CQP and CRF (without capped VBV) doesn't use mid-frame statistics to 
      * tune RateControl parameters for other frames.
      * Hence, for these modes, update m_startEndOrder and unlock RC for previous threads waiting in
-     * RateControlEnd here, after the slicecontexts are initialized. For the rest - ABR
+     * RateControlEnd here, after the slice contexts are initialized. For the rest - ABR
      * and VBV, unlock only after rateControlUpdateStats of this frame is called */
     if (m_param->rc.rateControlMode != X265_RC_ABR && !m_top->m_rateControl->m_isVbv)
     {
@@ -501,7 +502,7 @@
             {
                 for (int ref = 0; ref < slice->m_numRefIdx[l]; ref++)
                 {
-                    Frame *refpic = slice->m_refPicList[l][ref];
+                    Frame *refpic = slice->m_refFrameList[l][ref];
 
                     uint32_t reconRowCount = refpic->m_reconRowCount.get();
                     while ((reconRowCount != m_numRows) && (reconRowCount < row + m_refLagRows))
@@ -540,7 +541,7 @@
                     int list = l;
                     for (int ref = 0; ref < slice->m_numRefIdx[list]; ref++)
                     {
-                        Frame *refpic = slice->m_refPicList[list][ref];
+                        Frame *refpic = slice->m_refFrameList[list][ref];
 
                         uint32_t reconRowCount = refpic->m_reconRowCount.get();
                         while ((reconRowCount != m_numRows) && (reconRowCount < i + m_refLagRows))
@@ -697,7 +698,7 @@
     {
         for (int ref = 0; ref < slice->m_numRefIdx[l]; ref++)
         {
-            Frame *refpic = slice->m_refPicList[l][ref];
+            Frame *refpic = slice->m_refFrameList[l][ref];
             ATOMIC_DEC(&refpic->m_countRefEncoders);
         }
     }
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/framefilter.cpp
--- a/source/encoder/framefilter.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/framefilter.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -233,10 +233,10 @@
     }
     if (m_param->bEnableSsim && m_ssimBuf)
     {
-        pixel *rec = m_frame->m_reconPic->m_picOrg[0];
+        pixel *rec = reconPic->m_picOrg[0];
         pixel *fenc = m_frame->m_fencPic->m_picOrg[0];
-        intptr_t stride1 = m_frame->m_fencPic->m_stride;
-        intptr_t stride2 = m_frame->m_reconPic->m_stride;
+        intptr_t stride1 = reconPic->m_stride;
+        intptr_t stride2 = m_frame->m_fencPic->m_stride;
         uint32_t bEnd = ((row + 1) == (this->m_numRows - 1));
         uint32_t bStart = (row == 0);
         uint32_t minPixY = row * g_maxCUSize - 4 * !bStart;
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/ratecontrol.cpp
--- a/source/encoder/ratecontrol.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/ratecontrol.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -1345,10 +1345,10 @@
     {
         /* B-frames don't have independent rate control, but rather get the
          * average QP of the two adjacent P-frames + an offset */
-        Slice* prevRefSlice = m_curSlice->m_refPicList[0][0]->m_encData->m_slice;
-        Slice* nextRefSlice = m_curSlice->m_refPicList[1][0]->m_encData->m_slice;
-        double q0 = m_curSlice->m_refPicList[0][0]->m_encData->m_avgQpRc;
-        double q1 = m_curSlice->m_refPicList[1][0]->m_encData->m_avgQpRc;
+        Slice* prevRefSlice = m_curSlice->m_refFrameList[0][0]->m_encData->m_slice;
+        Slice* nextRefSlice = m_curSlice->m_refFrameList[1][0]->m_encData->m_slice;
+        double q0 = m_curSlice->m_refFrameList[0][0]->m_encData->m_avgQpRc;
+        double q1 = m_curSlice->m_refFrameList[1][0]->m_encData->m_avgQpRc;
         bool i0 = prevRefSlice->m_sliceType == I_SLICE;
         bool i1 = nextRefSlice->m_sliceType == I_SLICE;
         int dt0 = abs(m_curSlice->m_poc - prevRefSlice->m_poc);
@@ -1364,9 +1364,9 @@
                 q0 = q1;
             }
         }
-        if (prevRefSlice->m_sliceType == B_SLICE && IS_REFERENCED(m_curSlice->m_refPicList[0][0]))
+        if (prevRefSlice->m_sliceType == B_SLICE && IS_REFERENCED(m_curSlice->m_refFrameList[0][0]))
             q0 -= m_pbOffset / 2;
-        if (nextRefSlice->m_sliceType == B_SLICE && IS_REFERENCED(m_curSlice->m_refPicList[1][0]))
+        if (nextRefSlice->m_sliceType == B_SLICE && IS_REFERENCED(m_curSlice->m_refFrameList[1][0]))
             q1 -= m_pbOffset / 2;
         if (i0 && i1)
             q = (q0 + q1) / 2 + m_ipOffset;
@@ -1483,7 +1483,7 @@
              * Then bias the quant up or down if total size so far was far from
              * the target.
              * Result: Depending on the value of rate_tolerance, there is a
-             * tradeoff between quality and bitrate precision. But at large
+             * trade-off between quality and bitrate precision. But at large
              * tolerances, the bit distribution approaches that of 2pass. */
 
             double overflow = 1;
@@ -1832,7 +1832,7 @@
     double qScale = x265_qp2qScale(qpVbv);
     FrameData& curEncData = *curFrame->m_encData;
     int picType = curEncData.m_slice->m_sliceType;
-    Frame* refFrame = curEncData.m_slice->m_refPicList[0][0];
+    Frame* refFrame = curEncData.m_slice->m_refFrameList[0][0];
 
     uint32_t maxRows = curEncData.m_slice->m_sps->numCuInHeight;
     uint32_t maxCols = curEncData.m_slice->m_sps->numCuInWidth;
@@ -1921,7 +1921,7 @@
     updatePredictor(rce->rowPred[0], qScaleVbv, (double)rowSatdCost, encodedBits);
     if (curEncData.m_slice->m_sliceType == P_SLICE)
     {
-        Frame* refFrame = curEncData.m_slice->m_refPicList[0][0];
+        Frame* refFrame = curEncData.m_slice->m_refFrameList[0][0];
         if (qpVbv < refFrame->m_encData->m_rowStat[row].diagQp)
         {
             uint64_t intraRowSatdCost = curEncData.m_rowStat[row].diagIntraSatd;
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/sao.cpp
--- a/source/encoder/sao.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/sao.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -243,12 +243,13 @@
 void SAO::processSaoCu(int addr, int typeIdx, int plane)
 {
     int x, y;
-    const CUData* cu = m_frame->m_encData->getPicCTU(addr);
-    pixel* rec = m_frame->m_reconPic->getPlaneAddr(plane, addr);
-    intptr_t stride = plane ? m_frame->m_reconPic->m_strideC : m_frame->m_reconPic->m_stride;
+    PicYuv* reconPic = m_frame->m_reconPic;
+    pixel* rec = reconPic->getPlaneAddr(plane, addr);
+    intptr_t stride = plane ? reconPic->m_strideC : reconPic->m_stride;
     uint32_t picWidth  = m_param->sourceWidth;
     uint32_t picHeight = m_param->sourceHeight;
-    int ctuWidth  = g_maxCUSize;
+    const CUData* cu = m_frame->m_encData->getPicCTU(addr);
+    int ctuWidth = g_maxCUSize;
     int ctuHeight = g_maxCUSize;
     uint32_t lpelx = cu->m_cuPelX;
     uint32_t tpely = cu->m_cuPelY;
@@ -572,7 +573,8 @@
 /* Process SAO all units */
 void SAO::processSaoUnitRow(SaoCtuParam* ctuParam, int idxY, int plane)
 {
-    intptr_t stride = plane ? m_frame->m_reconPic->m_strideC : m_frame->m_reconPic->m_stride;
+    PicYuv* reconPic = m_frame->m_reconPic;
+    intptr_t stride = plane ? reconPic->m_strideC : reconPic->m_stride;
     uint32_t picWidth  = m_param->sourceWidth;
     int ctuWidth  = g_maxCUSize;
     int ctuHeight = g_maxCUSize;
@@ -585,12 +587,12 @@
 
     if (!idxY)
     {
-        pixel* rec = m_frame->m_reconPic->m_picOrg[plane];
+        pixel* rec = reconPic->m_picOrg[plane];
         memcpy(m_tmpU1[plane], rec, sizeof(pixel) * picWidth);
     }
 
     int addr = idxY * m_numCuInWidth;
-    pixel* rec = plane ? m_frame->m_reconPic->getChromaAddr(plane, addr) : m_frame->m_reconPic->getLumaAddr(addr);
+    pixel* rec = plane ? reconPic->getChromaAddr(plane, addr) : reconPic->getLumaAddr(addr);
 
     for (int i = 0; i < ctuHeight + 1; i++)
     {
@@ -635,7 +637,7 @@
         }
         else if (idxX != (m_numCuInWidth - 1))
         {
-            rec = plane ? m_frame->m_reconPic->getChromaAddr(plane, addr) : m_frame->m_reconPic->getLumaAddr(addr);
+            rec = plane ? reconPic->getChromaAddr(plane, addr) : reconPic->getLumaAddr(addr);
 
             for (int i = 0; i < ctuHeight + 1; i++)
             {
@@ -671,12 +673,13 @@
 /* Calculate SAO statistics for current CTU without non-crossing slice */
 void SAO::calcSaoStatsCu(int addr, int plane)
 {
+    const PicYuv* reconPic = m_frame->m_reconPic;
     const CUData* cu = m_frame->m_encData->getPicCTU(addr);
     const pixel* fenc0 = m_frame->m_fencPic->getPlaneAddr(plane, addr);
-    const pixel* rec0  = m_frame->m_reconPic->getPlaneAddr(plane, addr);
+    const pixel* rec0  = reconPic->getPlaneAddr(plane, addr);
     const pixel* fenc;
     const pixel* rec;
-    intptr_t stride = plane ? m_frame->m_reconPic->m_strideC : m_frame->m_reconPic->m_stride;
+    intptr_t stride = plane ? reconPic->m_strideC : reconPic->m_stride;
     uint32_t picWidth  = m_param->sourceWidth;
     uint32_t picHeight = m_param->sourceHeight;
     int ctuWidth  = g_maxCUSize;
@@ -825,9 +828,10 @@
 
     int x, y;
     const CUData* cu = frame->m_encData->getPicCTU(addr);
+    const PicYuv* reconPic = m_frame->m_reconPic;
     const pixel* fenc;
     const pixel* rec;
-    intptr_t stride = m_frame->m_reconPic->m_stride;
+    intptr_t stride = reconPic->m_stride;
     uint32_t picWidth  = m_param->sourceWidth;
     uint32_t picHeight = m_param->sourceHeight;
     int ctuWidth  = g_maxCUSize;
@@ -861,7 +865,7 @@
     {
         if (plane == 1)
         {
-            stride = frame->m_reconPic->m_strideC;
+            stride = reconPic->m_strideC;
             picWidth  >>= m_hChromaShift;
             picHeight >>= m_vChromaShift;
             ctuWidth  >>= m_hChromaShift;
@@ -881,7 +885,7 @@
         count = m_countPreDblk[addr][plane][SAO_BO];
 
         const pixel* fenc0 = m_frame->m_fencPic->getPlaneAddr(plane, addr);
-        const pixel* rec0  = m_frame->m_reconPic->getPlaneAddr(plane, addr);
+        const pixel* rec0 = reconPic->getPlaneAddr(plane, addr);
         fenc = fenc0;
         rec  = rec0;
 
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/search.cpp
--- a/source/encoder/search.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/search.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -446,8 +446,9 @@
     }
 
     // set reconstruction for next intra prediction blocks if full TU prediction won
-    pixel*   picReconY = m_frame->m_reconPic->getLumaAddr(cu.m_cuAddr, cuGeom.absPartIdx + absPartIdx);
-    intptr_t picStride = m_frame->m_reconPic->m_stride;
+    PicYuv*  reconPic = m_frame->m_reconPic;
+    pixel*   picReconY = reconPic->getLumaAddr(cu.m_cuAddr, cuGeom.absPartIdx + absPartIdx);
+    intptr_t picStride = reconPic->m_stride;
     primitives.cu[sizeIdx].copy_pp(picReconY, picStride, reconQt, reconQtStride);
 
     outCost.rdcost     += fullCost.rdcost;
@@ -611,8 +612,9 @@
     }
 
     // set reconstruction for next intra prediction blocks
-    pixel*   picReconY = m_frame->m_reconPic->getLumaAddr(cu.m_cuAddr, cuGeom.absPartIdx + absPartIdx);
-    intptr_t picStride = m_frame->m_reconPic->m_stride;
+    PicYuv*  reconPic = m_frame->m_reconPic;
+    pixel*   picReconY = reconPic->getLumaAddr(cu.m_cuAddr, cuGeom.absPartIdx + absPartIdx);
+    intptr_t picStride = reconPic->m_stride;
     primitives.cu[sizeIdx].copy_pp(picReconY, picStride, reconQt, reconQtStride);
 
     outCost.rdcost += fullCost.rdcost;
@@ -661,8 +663,9 @@
         uint32_t sizeIdx   = log2TrSize - 2;
         primitives.cu[sizeIdx].calcresidual(fenc, pred, residual, stride);
 
-        pixel*   picReconY = m_frame->m_reconPic->getLumaAddr(cu.m_cuAddr, cuGeom.absPartIdx + absPartIdx);
-        intptr_t picStride = m_frame->m_reconPic->m_stride;
+        PicYuv*  reconPic = m_frame->m_reconPic;
+        pixel*   picReconY = reconPic->getLumaAddr(cu.m_cuAddr, cuGeom.absPartIdx + absPartIdx);
+        intptr_t picStride = reconPic->m_stride;
 
         uint32_t numSig = m_quant.transformNxN(cu, fenc, stride, residual, stride, coeffY, log2TrSize, TEXT_LUMA, absPartIdx, false);
         if (numSig)
@@ -821,8 +824,9 @@
             coeff_t* coeffC        = m_rqt[qtLayer].coeffRQT[chromaId] + coeffOffsetC;
             pixel*   reconQt       = m_rqt[qtLayer].reconQtYuv.getChromaAddr(chromaId, absPartIdxC);
             uint32_t reconQtStride = m_rqt[qtLayer].reconQtYuv.m_csize;
-            pixel*   picReconC = m_frame->m_reconPic->getChromaAddr(chromaId, cu.m_cuAddr, cuGeom.absPartIdx + absPartIdxC);
-            intptr_t picStride = m_frame->m_reconPic->m_strideC;
+            PicYuv*  reconPic = m_frame->m_reconPic;
+            pixel*   picReconC = reconPic->getChromaAddr(chromaId, cu.m_cuAddr, cuGeom.absPartIdx + absPartIdxC);
+            intptr_t picStride = reconPic->m_strideC;
 
             uint32_t chromaPredMode = cu.m_chromaIntraDir[absPartIdxC];
             if (chromaPredMode == DM_CHROMA_IDX)
@@ -998,8 +1002,9 @@
             cu.setCbfPartRange(bCbf << tuDepth, ttype, absPartIdxC, tuIterator.absPartIdxStep);
             cu.setTransformSkipPartRange(bTSkip, ttype, absPartIdxC, tuIterator.absPartIdxStep);
 
-            pixel*   reconPicC = m_frame->m_reconPic->getChromaAddr(chromaId, cu.m_cuAddr, cuGeom.absPartIdx + absPartIdxC);
-            intptr_t picStride = m_frame->m_reconPic->m_strideC;
+            PicYuv*  reconPic = m_frame->m_reconPic;
+            pixel*   reconPicC = reconPic->getChromaAddr(chromaId, cu.m_cuAddr, cuGeom.absPartIdx + absPartIdxC);
+            intptr_t picStride = reconPic->m_strideC;
             primitives.cu[sizeIdxC].copy_pp(reconPicC, picStride, reconQt, reconQtStride);
 
             outDist += bDist;
@@ -1108,8 +1113,9 @@
             int16_t* residual = resiYuv.getChromaAddr(chromaId, absPartIdxC);
             uint32_t coeffOffsetC  = absPartIdxC << (LOG2_UNIT_SIZE * 2 - (m_hChromaShift + m_vChromaShift));
             coeff_t* coeffC        = cu.m_trCoeff[ttype] + coeffOffsetC;
-            pixel*   picReconC = m_frame->m_reconPic->getChromaAddr(chromaId, cu.m_cuAddr, cuGeom.absPartIdx + absPartIdxC);
-            intptr_t picStride = m_frame->m_reconPic->m_strideC;
+            PicYuv*  reconPic = m_frame->m_reconPic;
+            pixel*   picReconC = reconPic->getChromaAddr(chromaId, cu.m_cuAddr, cuGeom.absPartIdx + absPartIdxC);
+            intptr_t picStride = reconPic->m_strideC;
 
             uint32_t chromaPredMode = cu.m_chromaIntraDir[absPartIdxC];
             if (chromaPredMode == DM_CHROMA_IDX)
@@ -1591,10 +1597,11 @@
              * output recon picture, so it cannot proceed in parallel with anything else when doing INTRA_NXN. Also
              * it is not updating m_rdContexts[depth].cur for the later PUs which I suspect is slightly wrong. I think
              * that the contexts should be tracked through each PU */
-            pixel*   dst         = m_frame->m_reconPic->getLumaAddr(cu.m_cuAddr, cuGeom.absPartIdx + absPartIdx);
-            uint32_t dststride   = m_frame->m_reconPic->m_stride;
-            const pixel*   src   = reconYuv->getLumaAddr(absPartIdx);
-            uint32_t srcstride   = reconYuv->m_size;
+            PicYuv*  reconPic = m_frame->m_reconPic;
+            pixel*   dst       = reconPic->getLumaAddr(cu.m_cuAddr, cuGeom.absPartIdx + absPartIdx);
+            uint32_t dststride = reconPic->m_stride;
+            const pixel*   src = reconYuv->getLumaAddr(absPartIdx);
+            uint32_t srcstride = reconYuv->m_size;
             primitives.cu[log2TrSize - 2].copy_pp(dst, dststride, src, srcstride);
         }
     }
@@ -1757,15 +1764,16 @@
         if (!tuIterator.isLastSection())
         {
             uint32_t zorder    = cuGeom.absPartIdx + absPartIdxC;
-            uint32_t dststride = m_frame->m_reconPic->m_strideC;
+            PicYuv*  reconPic  = m_frame->m_reconPic;
+            uint32_t dststride = reconPic->m_strideC;
             const pixel* src;
             pixel* dst;
 
-            dst = m_frame->m_reconPic->getCbAddr(cu.m_cuAddr, zorder);
+            dst = reconPic->getCbAddr(cu.m_cuAddr, zorder);
             src = reconYuv.getCbAddr(absPartIdxC);
             primitives.chroma[m_csp].cu[size].copy_pp(dst, dststride, src, reconYuv.m_csize);
 
-            dst = m_frame->m_reconPic->getCrAddr(cu.m_cuAddr, zorder);
+            dst = reconPic->getCrAddr(cu.m_cuAddr, zorder);
             src = reconYuv.getCrAddr(absPartIdxC);
             primitives.chroma[m_csp].cu[size].copy_pp(dst, dststride, src, reconYuv.m_csize);
         }
@@ -1866,7 +1874,7 @@
 /* find the lowres motion vector from lookahead in middle of current PU */
 MV Search::getLowresMV(const CUData& cu, const PredictionUnit& pu, int list, int ref)
 {
-    int diffPoc = abs(m_slice->m_poc - m_slice->m_refPicList[list][ref]->m_poc);
+    int diffPoc = abs(m_slice->m_poc - m_slice->m_refPOCList[list][ref]);
     if (diffPoc > m_param->bframes + 1)
         /* poc difference is out of range for lookahead */
         return 0;
@@ -1906,7 +1914,7 @@
         else
         {
             cu.clipMv(mvCand);
-            predInterLumaPixel(pu, tmpPredYuv, *m_slice->m_refPicList[list][ref]->m_reconPic, mvCand);
+            predInterLumaPixel(pu, tmpPredYuv, *m_slice->m_refReconPicList[list][ref], mvCand);
             costs[i] = m_me.bufSAD(tmpPredYuv.getLumaAddr(pu.puAbsPartIdx), tmpPredYuv.m_size);
         }
     }
@@ -2197,8 +2205,8 @@
             }
             else
             {
-                PicYuv* refPic0 = slice->m_refPicList[0][bestME[0].ref]->m_reconPic;
-                PicYuv* refPic1 = slice->m_refPicList[1][bestME[1].ref]->m_reconPic;
+                PicYuv* refPic0 = slice->m_refReconPicList[0][bestME[0].ref];
+                PicYuv* refPic1 = slice->m_refReconPicList[1][bestME[1].ref];
                 Yuv* bidirYuv = m_rqt[cuGeom.depth].bidirPredYuv;
 
                 /* Generate reference subpels */
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/slicetype.cpp
--- a/source/encoder/slicetype.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/slicetype.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -728,16 +728,16 @@
 
     case P_SLICE:
         b = p1 = poc - l0poc;
-        frames[p0] = &slice->m_refPicList[0][0]->m_lowres;
+        frames[p0] = &slice->m_refFrameList[0][0]->m_lowres;
         frames[b] = &curFrame->m_lowres;
         break;
 
     case B_SLICE:
         b = poc - l0poc;
         p1 = b + l1poc - poc;
-        frames[p0] = &slice->m_refPicList[0][0]->m_lowres;
+        frames[p0] = &slice->m_refFrameList[0][0]->m_lowres;
         frames[b] = &curFrame->m_lowres;
-        frames[p1] = &slice->m_refPicList[1][0]->m_lowres;
+        frames[p1] = &slice->m_refFrameList[1][0]->m_lowres;
         break;
 
     default:
diff -r c4d75c9585e4 -r 390992e54c4e source/encoder/weightPrediction.cpp
--- a/source/encoder/weightPrediction.cpp	Wed Aug 12 08:52:12 2015 +0530
+++ b/source/encoder/weightPrediction.cpp	Wed Aug 12 14:03:42 2015 +0000
@@ -259,7 +259,7 @@
     for (int list = 0; list < cache.numPredDir; list++)
     {
         WeightParam *weights = wp[list][0];
-        Frame *refFrame = slice.m_refPicList[list][0];
+        Frame *refFrame = slice.m_refFrameList[list][0];
         Lowres& refLowres = refFrame->m_lowres;
         int diffPoc = abs(curPoc - refFrame->m_poc);
 



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