[x265] cleanup CUData::m_skipFlag

Satoshi Nakagawa nakagawa424 at oki.com
Mon Nov 3 09:05:52 CET 2014


# HG changeset patch
# User Satoshi Nakagawa <nakagawa424 at oki.com>
# Date 1415001734 -32400
#      Mon Nov 03 17:02:14 2014 +0900
# Node ID ef411645295a51cf276e7830d9a98ffe50d85f63
# Parent  eebb372eec893efc50e66806fcc19b1c1bd89683
cleanup CUData::m_skipFlag

diff -r eebb372eec89 -r ef411645295a source/common/cudata.cpp
--- a/source/common/cudata.cpp	Fri Oct 31 16:29:20 2014 -0500
+++ b/source/common/cudata.cpp	Mon Nov 03 17:02:14 2014 +0900
@@ -230,13 +230,12 @@
     m_qp          = (char*)charBuf; charBuf += m_numPartitions;
     m_log2CUSize         = charBuf; charBuf += m_numPartitions;
     m_partSize           = charBuf; charBuf += m_numPartitions;
-    m_predMode           = charBuf; charBuf += m_numPartitions;
     m_lumaIntraDir       = charBuf; charBuf += m_numPartitions;
     m_tqBypass           = charBuf; charBuf += m_numPartitions;
     m_refIdx[0]   = (char*)charBuf; charBuf += m_numPartitions;
     m_refIdx[1]   = (char*)charBuf; charBuf += m_numPartitions;
     m_cuDepth            = charBuf; charBuf += m_numPartitions;
-    m_skipFlag           = charBuf; charBuf += m_numPartitions; /* the order up to here is important in initCTU() and initSubCU() */
+    m_predMode           = charBuf; charBuf += m_numPartitions; /* the order up to here is important in initCTU() and initSubCU() */
     m_mergeFlag          = charBuf; charBuf += m_numPartitions;
     m_interDir           = charBuf; charBuf += m_numPartitions;
     m_mvpIdx[0]          = charBuf; charBuf += m_numPartitions;
@@ -279,7 +278,6 @@
     m_partSet((uint8_t*)m_qp, (uint8_t)qp);
     m_partSet(m_log2CUSize,   (uint8_t)g_maxLog2CUSize);
     m_partSet(m_partSize,     (uint8_t)SIZE_NONE);
-    m_partSet(m_predMode,     (uint8_t)MODE_NONE);
     m_partSet(m_lumaIntraDir, (uint8_t)DC_IDX);
     m_partSet(m_tqBypass,     (uint8_t)frame.m_encData->m_param->bLossless);
     if (m_slice->m_sliceType != I_SLICE)
@@ -291,7 +289,7 @@
     X265_CHECK(!(frame.m_encData->m_param->bLossless && !m_slice->m_pps->bTransquantBypassEnabled), "lossless enabled without TQbypass in PPS\n");
 
     /* initialize the remaining CU data in one memset */
-    memset(m_cuDepth, 0, (BytesPerPartition - 8) * m_numPartitions);
+    memset(m_cuDepth, 0, (BytesPerPartition - 7) * m_numPartitions);
 
     uint32_t widthInCU = m_slice->m_sps->numCuInWidth;
     m_cuLeft = (m_cuAddr % widthInCU) ? m_encData->getPicCTU(m_cuAddr - 1) : NULL;
@@ -319,7 +317,6 @@
     m_partSet((uint8_t*)m_qp, (uint8_t)ctu.m_qp[0]);
     m_partSet(m_log2CUSize,   (uint8_t)cuGeom.log2CUSize);
     m_partSet(m_partSize,     (uint8_t)SIZE_NONE);
-    m_partSet(m_predMode,     (uint8_t)MODE_NONE);
     m_partSet(m_lumaIntraDir, (uint8_t)DC_IDX);
     m_partSet(m_tqBypass,     (uint8_t)m_encData->m_param->bLossless);
     m_partSet((uint8_t*)m_refIdx[0], (uint8_t)REF_NOT_VALID);
@@ -327,7 +324,7 @@
     m_partSet(m_cuDepth,      (uint8_t)cuGeom.depth);
 
     /* initialize the remaining CU data in one memset */
-    memset(m_skipFlag, 0, (BytesPerPartition - 9) * m_numPartitions);
+    memset(m_predMode, 0, (BytesPerPartition - 8) * m_numPartitions);
 }
 
 /* Copy the results of a sub-part (split) CU to the parent CU */
@@ -340,13 +337,12 @@
     m_subPartCopy((uint8_t*)m_qp + offset, (uint8_t*)subCU.m_qp);
     m_subPartCopy(m_log2CUSize + offset, subCU.m_log2CUSize);
     m_subPartCopy(m_partSize + offset, subCU.m_partSize);
-    m_subPartCopy(m_predMode + offset, subCU.m_predMode);
     m_subPartCopy(m_lumaIntraDir + offset, subCU.m_lumaIntraDir);
     m_subPartCopy(m_tqBypass + offset, subCU.m_tqBypass);
     m_subPartCopy((uint8_t*)m_refIdx[0] + offset, (uint8_t*)subCU.m_refIdx[0]);
     m_subPartCopy((uint8_t*)m_refIdx[1] + offset, (uint8_t*)subCU.m_refIdx[1]);
     m_subPartCopy(m_cuDepth + offset, subCU.m_cuDepth);
-    m_subPartCopy(m_skipFlag + offset, subCU.m_skipFlag);
+    m_subPartCopy(m_predMode + offset, subCU.m_predMode);
     m_subPartCopy(m_mergeFlag + offset, subCU.m_mergeFlag);
     m_subPartCopy(m_interDir + offset, subCU.m_interDir);
     m_subPartCopy(m_mvpIdx[0] + offset, subCU.m_mvpIdx[0]);
@@ -410,7 +406,7 @@
     m_partSet(m_tqBypass, true);
 
     /* clear residual coding flags */
-    m_partSet(m_skipFlag, 0);
+    m_partSet(m_predMode, cu.m_predMode[0] & (MODE_INTRA | MODE_INTER));
     m_partSet(m_tuDepth, 0);
     m_partSet(m_transformSkip[0], 0);
     m_partSet(m_transformSkip[1], 0);
@@ -428,13 +424,12 @@
     m_partCopy((uint8_t*)ctu.m_qp + m_absIdxInCTU, (uint8_t*)m_qp);
     m_partCopy(ctu.m_log2CUSize + m_absIdxInCTU, m_log2CUSize);
     m_partCopy(ctu.m_partSize + m_absIdxInCTU, m_partSize);
-    m_partCopy(ctu.m_predMode + m_absIdxInCTU, m_predMode);
     m_partCopy(ctu.m_lumaIntraDir + m_absIdxInCTU, m_lumaIntraDir);
     m_partCopy(ctu.m_tqBypass + m_absIdxInCTU, m_tqBypass);
     m_partCopy((uint8_t*)ctu.m_refIdx[0] + m_absIdxInCTU, (uint8_t*)m_refIdx[0]);
     m_partCopy((uint8_t*)ctu.m_refIdx[1] + m_absIdxInCTU, (uint8_t*)m_refIdx[1]);
     m_partCopy(ctu.m_cuDepth + m_absIdxInCTU, m_cuDepth);
-    m_partCopy(ctu.m_skipFlag + m_absIdxInCTU, m_skipFlag);
+    m_partCopy(ctu.m_predMode + m_absIdxInCTU, m_predMode);
     m_partCopy(ctu.m_mergeFlag + m_absIdxInCTU, m_mergeFlag);
     m_partCopy(ctu.m_interDir + m_absIdxInCTU, m_interDir);
     m_partCopy(ctu.m_mvpIdx[0] + m_absIdxInCTU, m_mvpIdx[0]);
@@ -478,7 +473,6 @@
     m_partCopy((uint8_t*)m_qp, (uint8_t*)ctu.m_qp + m_absIdxInCTU);
     m_partCopy(m_log2CUSize,   ctu.m_log2CUSize + m_absIdxInCTU);
     m_partCopy(m_partSize,     ctu.m_partSize + m_absIdxInCTU);
-    m_partCopy(m_predMode,     ctu.m_predMode + m_absIdxInCTU);
     m_partCopy(m_lumaIntraDir, ctu.m_lumaIntraDir + m_absIdxInCTU);
     m_partCopy(m_tqBypass,     ctu.m_tqBypass + m_absIdxInCTU);
     m_partCopy((uint8_t*)m_refIdx[0], (uint8_t*)ctu.m_refIdx[0] + m_absIdxInCTU);
@@ -496,7 +490,7 @@
     memcpy(m_mvd[1], ctu.m_mvd[1] + m_absIdxInCTU, m_numPartitions * sizeof(MV));
 
     /* clear residual coding flags */
-    m_partSet(m_skipFlag, 0);
+    m_partSet(m_predMode, ctu.m_predMode[m_absIdxInCTU] & (MODE_INTRA | MODE_INTER));
     m_partSet(m_tuDepth, 0);
     m_partSet(m_transformSkip[0], 0);
     m_partSet(m_transformSkip[1], 0);
@@ -515,7 +509,7 @@
     m_partCopy(ctu.m_transformSkip[0] + m_absIdxInCTU, m_transformSkip[0]);
     m_partCopy(ctu.m_transformSkip[1] + m_absIdxInCTU, m_transformSkip[1]);
     m_partCopy(ctu.m_transformSkip[2] + m_absIdxInCTU, m_transformSkip[2]);
-    m_partCopy(ctu.m_skipFlag + m_absIdxInCTU, m_skipFlag);
+    m_partCopy(ctu.m_predMode + m_absIdxInCTU, m_predMode);
     m_partCopy(ctu.m_tuDepth + m_absIdxInCTU, m_tuDepth);
     m_partCopy(ctu.m_cbf[0] + m_absIdxInCTU, m_cbf[0]);
     m_partCopy(ctu.m_cbf[1] + m_absIdxInCTU, m_cbf[1]);
@@ -1441,7 +1435,7 @@
     bool isAvailableA1 = cuLeft &&
         cuLeft->isDiffMER(xP - 1, yP + nPSH - 1, xP, yP) &&
         !(puIdx == 1 && (curPS == SIZE_Nx2N || curPS == SIZE_nLx2N || curPS == SIZE_nRx2N)) &&
-        !cuLeft->isIntra(leftPartIdx);
+        cuLeft->isInter(leftPartIdx);
     if (isAvailableA1)
     {
         // get Inter Dir
@@ -1465,7 +1459,7 @@
     bool isAvailableB1 = cuAbove &&
         cuAbove->isDiffMER(xP + nPSW - 1, yP - 1, xP, yP) &&
         !(puIdx == 1 && (curPS == SIZE_2NxN || curPS == SIZE_2NxnU || curPS == SIZE_2NxnD)) &&
-        !cuAbove->isIntra(abovePartIdx);
+        cuAbove->isInter(abovePartIdx);
     if (isAvailableB1 && (!isAvailableA1 || !cuLeft->hasEqualMotion(leftPartIdx, *cuAbove, abovePartIdx)))
     {
         // get Inter Dir
@@ -1486,7 +1480,7 @@
     const CUData* cuAboveRight = getPUAboveRight(aboveRightPartIdx, partIdxRT);
     bool isAvailableB0 = cuAboveRight &&
         cuAboveRight->isDiffMER(xP + nPSW, yP - 1, xP, yP) &&
-        !cuAboveRight->isIntra(aboveRightPartIdx);
+        cuAboveRight->isInter(aboveRightPartIdx);
     if (isAvailableB0 && (!isAvailableB1 || !cuAbove->hasEqualMotion(abovePartIdx, *cuAboveRight, aboveRightPartIdx)))
     {
         // get Inter Dir
@@ -1507,7 +1501,7 @@
     const CUData* cuLeftBottom = this->getPUBelowLeft(leftBottomPartIdx, partIdxLB);
     bool isAvailableA0 = cuLeftBottom &&
         cuLeftBottom->isDiffMER(xP - 1, yP + nPSH, xP, yP) &&
-        !cuLeftBottom->isIntra(leftBottomPartIdx);
+        cuLeftBottom->isInter(leftBottomPartIdx);
     if (isAvailableA0 && (!isAvailableA1 || !cuLeft->hasEqualMotion(leftPartIdx, *cuLeftBottom, leftBottomPartIdx)))
     {
         // get Inter Dir
@@ -1530,7 +1524,7 @@
         const CUData* cuAboveLeft = getPUAboveLeft(aboveLeftPartIdx, absPartAddr);
         bool isAvailableB2 = cuAboveLeft &&
             cuAboveLeft->isDiffMER(xP - 1, yP - 1, xP, yP) &&
-            !cuAboveLeft->isIntra(aboveLeftPartIdx);
+            cuAboveLeft->isInter(aboveLeftPartIdx);
         if (isAvailableB2 && (!isAvailableA1 || !cuLeft->hasEqualMotion(leftPartIdx, *cuAboveLeft, aboveLeftPartIdx))
             && (!isAvailableB1 || !cuAbove->hasEqualMotion(abovePartIdx, *cuAboveLeft, aboveLeftPartIdx)))
         {
@@ -1966,26 +1960,18 @@
 
 bool CUData::getColMVP(MV& outMV, int& outRefIdx, int picList, int cuAddr, int partUnitIdx) const
 {
-    uint32_t absPartAddr = partUnitIdx & TMVP_UNIT_MASK;
-
-    int colRefPicList;
-    int colPOC, colRefPOC, curPOC, curRefPOC;
-    MV colmv;
-
-    // use coldir.
     Frame *colPic = m_slice->m_refPicList[m_slice->isInterB() ? 1 - m_slice->m_colFromL0Flag : 0][m_slice->m_colRefIdx];
     CUData *colCU = colPic->m_encData->getPicCTU(cuAddr);
 
     if (colCU->m_partSize[partUnitIdx] == SIZE_NONE)
         return false;
 
-    curPOC = m_slice->m_poc;
-    colPOC = colCU->m_slice->m_poc;
+    uint32_t absPartAddr = partUnitIdx & TMVP_UNIT_MASK;
 
     if (colCU->isIntra(absPartAddr))
         return false;
 
-    colRefPicList = m_slice->m_bCheckLDC ? picList : m_slice->m_colFromL0Flag;
+    int colRefPicList = m_slice->m_bCheckLDC ? picList : m_slice->m_colFromL0Flag;
 
     int colRefIdx = colCU->m_refIdx[colRefPicList][absPartAddr];
 
@@ -1999,9 +1985,12 @@
     }
 
     // Scale the vector
-    colRefPOC = colCU->m_slice->m_refPOCList[colRefPicList][colRefIdx];
-    colmv = colCU->m_mv[colRefPicList][absPartAddr];
-    curRefPOC = m_slice->m_refPOCList[picList][outRefIdx];
+    int colRefPOC = colCU->m_slice->m_refPOCList[colRefPicList][colRefIdx];
+    int colPOC = colCU->m_slice->m_poc;
+    MV colmv = colCU->m_mv[colRefPicList][absPartAddr];
+
+    int curRefPOC = m_slice->m_refPOCList[picList][outRefIdx];
+    int curPOC = m_slice->m_poc;
 
     scaleMvByPOCDist(outMV, colmv, curPOC, curRefPOC, colPOC, colRefPOC);
     return true;
diff -r eebb372eec89 -r ef411645295a source/common/cudata.h
--- a/source/common/cudata.h	Fri Oct 31 16:29:20 2014 -0500
+++ b/source/common/cudata.h	Mon Nov 03 17:02:14 2014 +0900
@@ -51,9 +51,10 @@
 
 enum PredMode
 {
-    MODE_INTER,
-    MODE_INTRA,
-    MODE_NONE = 15
+    MODE_NONE  = 0,
+    MODE_INTER = (1 << 0),
+    MODE_INTRA = (1 << 1),
+    MODE_SKIP  = (1 << 2) | MODE_INTER
 };
 
 // motion vector predictor direction used in AMVP
@@ -129,12 +130,11 @@
     char*         m_qp;               // array of QP values
     uint8_t*      m_log2CUSize;       // array of cu log2Size TODO: seems redundant to depth
     uint8_t*      m_partSize;         // array of partition sizes
-    uint8_t*      m_predMode;         // array of prediction modes
     uint8_t*      m_lumaIntraDir;     // array of intra directions (luma)
     uint8_t*      m_tqBypass;         // array of CU lossless flags
     char*         m_refIdx[2];        // array of motion reference indices per list
     uint8_t*      m_cuDepth;          // array of depths
-    uint8_t*      m_skipFlag;         // array of skip flags
+    uint8_t*      m_predMode;         // array of prediction modes
     uint8_t*      m_mergeFlag;        // array of merge flags
     uint8_t*      m_interDir;         // array of inter directions
     uint8_t*      m_mvpIdx[2];        // array of motion vector predictor candidates or merge candidate indices [0]
@@ -142,7 +142,7 @@
     uint8_t*      m_transformSkip[3]; // array of transform skipping flags per plane
     uint8_t*      m_cbf[3];           // array of coded block flags (CBF) per plane
     uint8_t*      m_chromaIntraDir;   // array of intra directions (chroma)
-    enum { BytesPerPartition = 22 };  // combined sizeof() of all per-part data
+    enum { BytesPerPartition = 21 };  // combined sizeof() of all per-part data
 
     coeff_t*      m_trCoeff[3];       // transformed coefficient buffer per plane
 
@@ -173,7 +173,6 @@
     void     updatePic(uint32_t depth) const;
 
     void     setPartSizeSubParts(PartSize size)    { m_partSet(m_partSize, (uint8_t)size); }
-    void     setSkipFlagSubParts(uint8_t skipFlag) { m_partSet(m_skipFlag, skipFlag); }
     void     setPredModeSubParts(PredMode mode)    { m_partSet(m_predMode, (uint8_t)mode); }
     void     clearCbf()                            { m_partSet(m_cbf[0], 0); m_partSet(m_cbf[1], 0); m_partSet(m_cbf[2], 0); }
 
@@ -204,7 +203,8 @@
 
     uint32_t getNumPartInter() const              { return nbPartsTable[(int)m_partSize[0]]; }
     bool     isIntra(uint32_t absPartIdx) const   { return m_predMode[absPartIdx] == MODE_INTRA; }
-    bool     isSkipped(uint32_t absPartIdx) const { return !!m_skipFlag[absPartIdx]; }
+    bool     isInter(uint32_t absPartIdx) const   { return !!(m_predMode[absPartIdx] & MODE_INTER); }
+    bool     isSkipped(uint32_t absPartIdx) const { return m_predMode[absPartIdx] == MODE_SKIP; }
     bool     isBipredRestriction() const          { return m_log2CUSize[0] == 3 && m_partSize[0] != SIZE_2Nx2N; }
 
     void     getPartIndexAndSize(uint32_t puIdx, uint32_t& absPartIdx, int& puWidth, int& puHeight) const;
diff -r eebb372eec89 -r ef411645295a source/common/quant.cpp
--- a/source/common/quant.cpp	Fri Oct 31 16:29:20 2014 -0500
+++ b/source/common/quant.cpp	Mon Nov 03 17:02:14 2014 +0900
@@ -333,7 +333,6 @@
 
     bool isLuma  = ttype == TEXT_LUMA;
     bool usePsy  = m_psyRdoqScale && isLuma && !useTransformSkip;
-    bool isIntra = cu.m_predMode[absPartIdx] == MODE_INTRA;
     int transformShift = MAX_TR_DYNAMIC_RANGE - X265_DEPTH - log2TrSize; // Represents scaling through forward transform
     int trSize = 1 << log2TrSize;
 
@@ -355,6 +354,7 @@
     }
     else
     {
+        bool isIntra = cu.isIntra(absPartIdx);
         const uint32_t sizeIdx = log2TrSize - 2;
         int useDST = !sizeIdx && isLuma && isIntra;
         int index = DCT_4x4 + sizeIdx - useDST;
diff -r eebb372eec89 -r ef411645295a source/encoder/analysis.cpp
--- a/source/encoder/analysis.cpp	Fri Oct 31 16:29:20 2014 -0500
+++ b/source/encoder/analysis.cpp	Mon Nov 03 17:02:14 2014 +0900
@@ -178,7 +178,7 @@
     if (!md.bestMode->distortion)
         /* already lossless */
         return;
-    else if (md.bestMode->cu.m_predMode[0] == MODE_INTRA)
+    else if (md.bestMode->cu.isIntra(0))
     {
         md.pred[PRED_LOSSLESS].cu.initLosslessCU(md.bestMode->cu, cuGeom);
         PartSize size = (PartSize)md.pred[PRED_LOSSLESS].cu.m_partSize[0];
@@ -695,7 +695,7 @@
     bool bNoSplit = false;
     if (md.bestMode)
     {
-        bNoSplit = !!md.bestMode->cu.isSkipped(0);
+        bNoSplit = md.bestMode->cu.isSkipped(0);
         if (mightSplit && depth && depth >= minDepth && !bNoSplit && m_param->rdLevel <= 4)
             bNoSplit = recursionDepthCheck(parentCTU, cuGeom, *md.bestMode);
     }
@@ -741,7 +741,7 @@
         checkBestMode(*splitPred, depth);
     }
 
-    if (!depth || md.bestMode->cu.m_predMode[0] != MODE_INTRA)
+    if (!depth || md.bestMode->cu.isInter(0))
     {
         /* early-out statistics */
         FrameData& curEncData = const_cast<FrameData&>(*m_frame->m_encData);
@@ -894,7 +894,7 @@
                     /* prediction already generated for this CU, and if rd level
                      * is not 0, it is already fully encoded */
                 }
-                else if (md.bestMode->cu.m_predMode[0] == MODE_INTER)
+                else if (md.bestMode->cu.isInter(0))
                 {
                     for (uint32_t puIdx = 0; puIdx < md.bestMode->cu.getNumPartInter(); puIdx++)
                     {
@@ -920,7 +920,7 @@
                         {
                             md.bestMode->reconYuv.copyFromYuv(md.bestMode->predYuv);
                             if (cu.m_mergeFlag[0] && cu.m_partSize[0] == SIZE_2Nx2N)
-                                cu.setSkipFlagSubParts(true);
+                                cu.setPredModeSubParts(MODE_SKIP);
                         }
                     }
                 }
@@ -957,7 +957,7 @@
     bool bNoSplit = false;
     if (md.bestMode)
     {
-        bNoSplit = !!md.bestMode->cu.isSkipped(0);
+        bNoSplit = md.bestMode->cu.isSkipped(0);
         if (mightSplit && depth && depth >= minDepth && !bNoSplit)
             bNoSplit = recursionDepthCheck(parentCTU, cuGeom, *md.bestMode);
     }
@@ -1014,7 +1014,7 @@
             md.bestMode = splitPred;
     }
 
-    if (!depth || md.bestMode->cu.m_predMode[0] != MODE_INTRA)
+    if (!depth || md.bestMode->cu.isInter(0))
     {
         /* early-out statistics */
         FrameData& curEncData = const_cast<FrameData&>(*m_frame->m_encData);
@@ -1334,7 +1334,7 @@
         tempPred->cu.m_refIdx[0][0] = (char)mvFieldNeighbours[i][0].refIdx;
         tempPred->cu.m_mv[1][0] = mvFieldNeighbours[i][1].mv;
         tempPred->cu.m_refIdx[1][0] = (char)mvFieldNeighbours[i][1].refIdx;
-        tempPred->cu.setSkipFlagSubParts(false);     /* must be cleared between encode iterations */
+        tempPred->cu.setPredModeSubParts(MODE_INTER); /* must be cleared between encode iterations */
 
         prepMotionCompensation(tempPred->cu, cuGeom, 0);
         motionCompensation(tempPred->predYuv, true, true);
@@ -1367,7 +1367,7 @@
                 tempPred->cu.m_refIdx[0][0] = (char)mvFieldNeighbours[i][0].refIdx;
                 tempPred->cu.m_mv[1][0] = mvFieldNeighbours[i][1].mv;
                 tempPred->cu.m_refIdx[1][0] = (char)mvFieldNeighbours[i][1].refIdx;
-                tempPred->cu.setSkipFlagSubParts(false);
+                tempPred->cu.setPredModeSubParts(MODE_INTER);
                 tempPred->predYuv.copyFromYuv(bestPred->predYuv);
             }
             
@@ -1457,7 +1457,7 @@
     cu.copyFromPic(ctu, cuGeom);
     m_quant.setQPforQuant(cu);
 
-    if (cu.m_predMode[0] == MODE_INTRA)
+    if (cu.isIntra(0))
     {
         uint32_t tuDepthRange[2];
         cu.getIntraTUQtDepthRange(tuDepthRange, 0);
@@ -1467,9 +1467,9 @@
         getBestIntraModeChroma(*bestMode, cuGeom);
         residualQTIntraChroma(*bestMode, cuGeom, 0, 0);
     }
-    else if (cu.m_predMode[0] == MODE_INTER)
+    else if (cu.isInter(0))
     {
-        X265_CHECK(!ctu.m_skipFlag[absPartIdx], "skip not expected prior to transform\n");
+        X265_CHECK(!ctu.isSkipped(absPartIdx), "skip not expected prior to transform\n");
 
         /* Calculate residual for current CU part into depth sized resiYuv */
 
@@ -1499,7 +1499,7 @@
         residualTransformQuantInter(*bestMode, cuGeom, 0, cuGeom.depth, tuDepthRange);
 
         if (cu.m_mergeFlag[0] && cu.m_partSize[0] == SIZE_2Nx2N && !cu.getQtRootCbf(0))
-            cu.setSkipFlagSubParts(true);
+            cu.setPredModeSubParts(MODE_SKIP);
 
         PicYuv& reconPicYuv = *m_frame->m_reconPicYuv;
         if (cu.getQtRootCbf(0)) // TODO: split to each component
diff -r eebb372eec89 -r ef411645295a source/encoder/entropy.cpp
--- a/source/encoder/entropy.cpp	Fri Oct 31 16:29:20 2014 -0500
+++ b/source/encoder/entropy.cpp	Mon Nov 03 17:02:14 2014 +0900
@@ -557,18 +557,17 @@
         codeCUTransquantBypassFlag(cu.m_tqBypass[absPartIdx]);
 
     if (!slice->isIntra())
+    {
         codeSkipFlag(cu, absPartIdx);
-
-    if (cu.isSkipped(absPartIdx))
-    {
-        codeMergeIndex(cu, absPartIdx);
-        finishCU(cu, absPartIdx, depth);
-        return;
+        if (cu.isSkipped(absPartIdx))
+        {
+            codeMergeIndex(cu, absPartIdx);
+            finishCU(cu, absPartIdx, depth);
+            return;
+        }
+        codePredMode(cu.m_predMode[absPartIdx]);
     }
 
-    if (!slice->isIntra())
-        codePredMode(cu.m_predMode[absPartIdx]);
-
     codePartSize(cu, absPartIdx, depth);
 
     // prediction Info ( Intra : direction mode, Inter : Mv, reference idx )
@@ -648,11 +647,11 @@
 
     /* in each of these conditions, the subdiv flag is implied and not signaled,
      * so we have checks to make sure the implied value matches our intentions */
-    if (cu.m_predMode[absPartIdx] == MODE_INTRA && cu.m_partSize[absPartIdx] == SIZE_NxN && depth == cu.m_cuDepth[absPartIdx])
+    if (cu.isIntra(absPartIdx) && cu.m_partSize[absPartIdx] == SIZE_NxN && depth == cu.m_cuDepth[absPartIdx])
     {
         X265_CHECK(subdiv, "intra NxN requires TU depth below CU depth\n");
     }
-    else if (cu.m_predMode[absPartIdx] == MODE_INTER && (cu.m_partSize[absPartIdx] != SIZE_2Nx2N) && depth == cu.m_cuDepth[absPartIdx] &&
+    else if (cu.isInter(absPartIdx) && (cu.m_partSize[absPartIdx] != SIZE_2Nx2N) && depth == cu.m_cuDepth[absPartIdx] &&
              cu.m_slice->m_sps->quadtreeTUMaxDepthInter == 1)
     {
         X265_CHECK(subdiv, "inter TU must be smaller than CU when not 2Nx2N part size: log2TrSize %d, depthRange[0] %d\n", log2TrSize, depthRange[0]);
@@ -722,7 +721,7 @@
     }
     else
     {
-        if (cu.m_predMode[absPartIdx] != MODE_INTRA && depth == cu.m_cuDepth[absPartIdx] && !cu.getCbf(absPartIdx, TEXT_CHROMA_U, 0) && !cu.getCbf(absPartIdx, TEXT_CHROMA_V, 0))
+        if (cu.isInter(absPartIdx) && depth == cu.m_cuDepth[absPartIdx] && !cu.getCbf(absPartIdx, TEXT_CHROMA_U, 0) && !cu.getCbf(absPartIdx, TEXT_CHROMA_V, 0))
         {
             X265_CHECK(cu.getCbf(absPartIdx, TEXT_LUMA, 0), "CBF should have been set\n");
         }
@@ -1202,7 +1201,7 @@
 
 void Entropy::codePredMode(int predMode)
 {
-    encodeBin(predMode == MODE_INTER ? 0 : 1, m_contextState[OFF_PRED_MODE_CTX]);
+    encodeBin(predMode == MODE_INTRA ? 1 : 0, m_contextState[OFF_PRED_MODE_CTX]);
 }
 
 void Entropy::codeCUTransquantBypassFlag(uint32_t symbol)
diff -r eebb372eec89 -r ef411645295a source/encoder/frameencoder.cpp
--- a/source/encoder/frameencoder.cpp	Fri Oct 31 16:29:20 2014 -0500
+++ b/source/encoder/frameencoder.cpp	Mon Nov 03 17:02:14 2014 +0900
@@ -1011,7 +1011,7 @@
                 log->cntSkipCu[depth]++;
                 log->qTreeSkipCnt[depth]++;
             }
-            else if (ctu.m_predMode[absPartIdx] == MODE_INTER)
+            else if (ctu.isInter(absPartIdx))
             {
                 log->cntInter[depth]++;
                 log->qTreeInterCnt[depth]++;
@@ -1021,7 +1021,7 @@
                 else
                     log->cuInterDistribution[depth][AMP_ID]++;
             }
-            else if (ctu.m_predMode[absPartIdx] == MODE_INTRA)
+            else if (ctu.isIntra(absPartIdx))
             {
                 log->cntIntra[depth]++;
                 log->qTreeIntraCnt[depth]++;
diff -r eebb372eec89 -r ef411645295a source/encoder/search.cpp
--- a/source/encoder/search.cpp	Fri Oct 31 16:29:20 2014 -0500
+++ b/source/encoder/search.cpp	Mon Nov 03 17:02:14 2014 +0900
@@ -2366,7 +2366,7 @@
 
     // No residual coding : SKIP mode
 
-    cu.setSkipFlagSubParts(true);
+    cu.setPredModeSubParts(MODE_SKIP);
     cu.clearCbf();
     cu.setTUDepthSubParts(0, 0, depth);
 
@@ -2466,7 +2466,7 @@
     uint32_t coeffBits, bits;
     if (cu.m_mergeFlag[0] && cu.m_partSize[0] == SIZE_2Nx2N && !cu.getQtRootCbf(0))
     {
-        cu.setSkipFlagSubParts(true);
+        cu.setPredModeSubParts(MODE_SKIP);
 
         /* Merge/Skip */
         m_entropyCoder.resetBits();
@@ -3233,7 +3233,7 @@
 void Search::encodeResidualQT(CUData& cu, uint32_t absPartIdx, const uint32_t depth, bool bSubdivAndCbf, TextType ttype, uint32_t depthRange[2])
 {
     X265_CHECK(cu.m_cuDepth[0] == cu.m_cuDepth[absPartIdx], "depth not matching\n");
-    X265_CHECK(cu.m_predMode[absPartIdx] != MODE_INTRA, "encodeResidualQT() with intra block\n");
+    X265_CHECK(cu.isInter(absPartIdx), "encodeResidualQT() with intra block\n");
 
     const uint32_t curTuDepth  = depth - cu.m_cuDepth[0];
     const uint32_t tuDepth     = cu.m_tuDepth[absPartIdx];


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