ref: b5792a09f9c80c0f0bf3a6faacd8883c086817e6
dir: /codec/decoder/core/src/decode_slice.cpp/
/*! * \copy * Copyright (c) 2008-2013, Cisco Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * * Abstract * current slice decoding * * History * 07/10/2008 Created * 08/09/2013 Modified * *****************************************************************************/ #include "deblocking.h" #include "decode_slice.h" #include "parse_mb_syn_cavlc.h" #include "parse_mb_syn_cabac.h" #include "rec_mb.h" #include "mv_pred.h" #include "cpu_core.h" namespace WelsDec { int32_t WelsTargetSliceConstruction (PWelsDecoderContext pCtx) { PDqLayer pCurLayer = pCtx->pCurDqLayer; PSlice pCurSlice = &pCurLayer->sLayerInfo.sSliceInLayer; PSliceHeader pSliceHeader = &pCurSlice->sSliceHeaderExt.sSliceHeader; int32_t iTotalMbTargetLayer = pSliceHeader->pSps->uiTotalMbCount; int32_t iCurLayerWidth = pCurLayer->iMbWidth << 4; int32_t iCurLayerHeight = pCurLayer->iMbHeight << 4; int32_t iNextMbXyIndex = 0; PFmo pFmo = pCtx->pFmo; int32_t iTotalNumMb = pCurSlice->iTotalMbInCurSlice; int32_t iCountNumMb = 0; PDeblockingFilterMbFunc pDeblockMb; if (!pCtx->bAvcBasedFlag && iCurLayerWidth != pCtx->iCurSeqIntervalMaxPicWidth) { return -1; } iNextMbXyIndex = pSliceHeader->iFirstMbInSlice; pCurLayer->iMbX = iNextMbXyIndex % pCurLayer->iMbWidth; pCurLayer->iMbY = iNextMbXyIndex / pCurLayer->iMbWidth; pCurLayer->iMbXyIndex = iNextMbXyIndex; if (0 == iNextMbXyIndex) { pCurLayer->pDec->iSpsId = pCtx->pSps->iSpsId; pCurLayer->pDec->iPpsId = pCtx->pPps->iPpsId; pCurLayer->pDec->uiQualityId = pCurLayer->sLayerInfo.sNalHeaderExt.uiQualityId; } do { if (iCountNumMb >= iTotalNumMb) { break; } if (!pCtx->bParseOnly) { //for parse only, actual recon MB unnecessary if (WelsTargetMbConstruction (pCtx)) { WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING, "WelsTargetSliceConstruction():::MB(%d, %d) construction error. pCurSlice_type:%d", pCurLayer->iMbX, pCurLayer->iMbY, pCurSlice->eSliceType); return -1; } } ++iCountNumMb; if (!pCurLayer->pMbCorrectlyDecodedFlag[iNextMbXyIndex]) { //already con-ed, overwrite pCurLayer->pMbCorrectlyDecodedFlag[iNextMbXyIndex] = true; pCtx->pDec->iMbEcedPropNum += (pCurLayer->pMbRefConcealedFlag[iNextMbXyIndex] ? 1 : 0); ++pCtx->iTotalNumMbRec; } if (pCtx->iTotalNumMbRec > iTotalMbTargetLayer) { WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING, "WelsTargetSliceConstruction():::pCtx->iTotalNumMbRec:%d, iTotalMbTargetLayer:%d", pCtx->iTotalNumMbRec, iTotalMbTargetLayer); return -1; } if (pSliceHeader->pPps->uiNumSliceGroups > 1) { iNextMbXyIndex = FmoNextMb (pFmo, iNextMbXyIndex); } else { ++iNextMbXyIndex; } if (-1 == iNextMbXyIndex || iNextMbXyIndex >= iTotalMbTargetLayer) { // slice group boundary or end of a frame break; } pCurLayer->iMbX = iNextMbXyIndex % pCurLayer->iMbWidth; pCurLayer->iMbY = iNextMbXyIndex / pCurLayer->iMbWidth; pCurLayer->iMbXyIndex = iNextMbXyIndex; } while (1); pCtx->pDec->iWidthInPixel = iCurLayerWidth; pCtx->pDec->iHeightInPixel = iCurLayerHeight; if ((pCurSlice->eSliceType != I_SLICE) && (pCurSlice->eSliceType != P_SLICE)) return 0; if (pCtx->bParseOnly) //for parse only, deblocking should not go on return 0; pDeblockMb = WelsDeblockingMb; if (1 == pSliceHeader->uiDisableDeblockingFilterIdc || pCtx->pCurDqLayer->sLayerInfo.sSliceInLayer.iTotalMbInCurSlice <= 0) { return 0;//NO_SUPPORTED_FILTER_IDX } else { WelsDeblockingFilterSlice (pCtx, pDeblockMb); } // any other filter_idc not supported here, 7/22/2010 return 0; } int32_t WelsMbInterSampleConstruction (PWelsDecoderContext pCtx, PDqLayer pCurLayer, uint8_t* pDstY, uint8_t* pDstU, uint8_t* pDstV, int32_t iStrideL, int32_t iStrideC) { int32_t iMbXy = pCurLayer->iMbXyIndex; int32_t i, iIndex, iOffset; WelsChromaDcIdct (pCurLayer->pScaledTCoeff[iMbXy] + 256); // 256 = 16*16 WelsChromaDcIdct (pCurLayer->pScaledTCoeff[iMbXy] + 320); // 320 = 16*16 + 16*4 if (pCurLayer->pTransformSize8x8Flag[iMbXy]) { for (i = 0; i < 4; i++) { iIndex = g_kuiMbCountScan4Idx[i << 2]; if (pCurLayer->pNzc[iMbXy][iIndex] || pCurLayer->pNzc[iMbXy][iIndex + 1] || pCurLayer->pNzc[iMbXy][iIndex + 4] || pCurLayer->pNzc[iMbXy][iIndex + 5]) { iOffset = ((iIndex >> 2) << 2) * iStrideL + ((iIndex % 4) << 2); pCtx->pIdctResAddPredFunc8x8 (pDstY + iOffset, iStrideL, pCurLayer->pScaledTCoeff[iMbXy] + (i << 6)); } } } else { for (i = 0; i < 16; i++) { //luma iIndex = g_kuiMbCountScan4Idx[i]; if (pCurLayer->pNzc[iMbXy][iIndex]) { iOffset = ((iIndex >> 2) << 2) * iStrideL + ((iIndex % 4) << 2); pCtx->pIdctResAddPredFunc (pDstY + iOffset, iStrideL, pCurLayer->pScaledTCoeff[iMbXy] + (i << 4)); } } } for (i = 0; i < 4; i++) { //chroma iIndex = g_kuiMbCountScan4Idx[i + 16]; //Cb if (pCurLayer->pNzc[iMbXy][iIndex] || * (pCurLayer->pScaledTCoeff[iMbXy] + ((i + 16) << 4))) { iOffset = (((iIndex - 16) >> 2) << 2) * iStrideC + (((iIndex - 16) % 4) << 2); pCtx->pIdctResAddPredFunc (pDstU + iOffset, iStrideC, pCurLayer->pScaledTCoeff[iMbXy] + ((i + 16) << 4)); } iIndex = g_kuiMbCountScan4Idx[i + 20]; //Cr if (pCurLayer->pNzc[iMbXy][iIndex] || * (pCurLayer->pScaledTCoeff[iMbXy] + ((i + 20) << 4))) { iOffset = (((iIndex - 18) >> 2) << 2) * iStrideC + (((iIndex - 18) % 4) << 2); pCtx->pIdctResAddPredFunc (pDstV + iOffset, iStrideC , pCurLayer->pScaledTCoeff[iMbXy] + ((i + 20) << 4)); } } return 0; } int32_t WelsMbInterConstruction (PWelsDecoderContext pCtx, PDqLayer pCurLayer) { int32_t iMbX = pCurLayer->iMbX; int32_t iMbY = pCurLayer->iMbY; uint8_t* pDstY, *pDstCb, *pDstCr; int32_t iLumaStride = pCtx->pDec->iLinesize[0]; int32_t iChromaStride = pCtx->pDec->iLinesize[1]; pDstY = pCurLayer->pDec->pData[0] + ((iMbY * iLumaStride + iMbX) << 4); pDstCb = pCurLayer->pDec->pData[1] + ((iMbY * iChromaStride + iMbX) << 3); pDstCr = pCurLayer->pDec->pData[2] + ((iMbY * iChromaStride + iMbX) << 3); GetInterPred (pDstY, pDstCb, pDstCr, pCtx); WelsMbInterSampleConstruction (pCtx, pCurLayer, pDstY, pDstCb, pDstCr, iLumaStride, iChromaStride); pCtx->sBlockFunc.pWelsSetNonZeroCountFunc ( pCurLayer->pNzc[pCurLayer->iMbXyIndex]); // set all none-zero nzc to 1; dbk can be opti! return 0; } void WelsLumaDcDequantIdct (int16_t* pBlock, int32_t iQp, PWelsDecoderContext pCtx) { const int32_t kiQMul = pCtx->bUseScalingList ? pCtx->pDequant_coeff4x4[0][iQp][0] >> 4 : g_kuiDequantCoeff[iQp][0]; #define STRIDE 16 int32_t i; int32_t iTemp[16]; //FIXME check if this is a good idea int16_t* pBlk = pBlock; static const int32_t kiXOffset[4] = {0, STRIDE, STRIDE << 2, 5 * STRIDE}; static const int32_t kiYOffset[4] = {0, STRIDE << 1, STRIDE << 3, 10 * STRIDE}; for (i = 0; i < 4; i++) { const int32_t kiOffset = kiYOffset[i]; const int32_t kiX1 = kiOffset + kiXOffset[2]; const int32_t kiX2 = STRIDE + kiOffset; const int32_t kiX3 = kiOffset + kiXOffset[3]; const int32_t kiI4 = i << 2; // 4*i const int32_t kiZ0 = pBlk[kiOffset] + pBlk[kiX1]; const int32_t kiZ1 = pBlk[kiOffset] - pBlk[kiX1]; const int32_t kiZ2 = pBlk[kiX2] - pBlk[kiX3]; const int32_t kiZ3 = pBlk[kiX2] + pBlk[kiX3]; iTemp[kiI4] = kiZ0 + kiZ3; iTemp[1 + kiI4] = kiZ1 + kiZ2; iTemp[2 + kiI4] = kiZ1 - kiZ2; iTemp[3 + kiI4] = kiZ0 - kiZ3; } for (i = 0; i < 4; i++) { const int32_t kiOffset = kiXOffset[i]; const int32_t kiI4 = 4 + i; const int32_t kiZ0 = iTemp[i] + iTemp[4 + kiI4]; const int32_t kiZ1 = iTemp[i] - iTemp[4 + kiI4]; const int32_t kiZ2 = iTemp[kiI4] - iTemp[8 + kiI4]; const int32_t kiZ3 = iTemp[kiI4] + iTemp[8 + kiI4]; pBlk[kiOffset] = ((kiZ0 + kiZ3) * kiQMul + 2) >> 2; //FIXME think about merging this into decode_resdual pBlk[kiYOffset[1] + kiOffset] = ((kiZ1 + kiZ2) * kiQMul + 2) >> 2; pBlk[kiYOffset[2] + kiOffset] = ((kiZ1 - kiZ2) * kiQMul + 2) >> 2; pBlk[kiYOffset[3] + kiOffset] = ((kiZ0 - kiZ3) * kiQMul + 2) >> 2; } #undef STRIDE } int32_t WelsMbIntraPredictionConstruction (PWelsDecoderContext pCtx, PDqLayer pCurLayer, bool bOutput) { //seems IPCM should not enter this path int32_t iMbXy = pCurLayer->iMbXyIndex; WelsFillRecNeededMbInfo (pCtx, bOutput, pCurLayer); if (IS_INTRA16x16 (pCurLayer->pMbType[iMbXy])) { WelsLumaDcDequantIdct (pCurLayer->pScaledTCoeff[iMbXy], pCurLayer->pLumaQp[iMbXy], pCtx); RecI16x16Mb (iMbXy, pCtx, pCurLayer->pScaledTCoeff[iMbXy], pCurLayer); return 0; } if (IS_INTRA8x8 (pCurLayer->pMbType[iMbXy])) { RecI8x8Mb (iMbXy, pCtx, pCurLayer->pScaledTCoeff[iMbXy], pCurLayer); } if (IS_INTRA4x4 (pCurLayer->pMbType[iMbXy])) RecI4x4Mb (iMbXy, pCtx, pCurLayer->pScaledTCoeff[iMbXy], pCurLayer); return 0; } int32_t WelsMbInterPrediction (PWelsDecoderContext pCtx, PDqLayer pCurLayer) { int32_t iMbX = pCurLayer->iMbX; int32_t iMbY = pCurLayer->iMbY; uint8_t* pDstY, *pDstCb, *pDstCr; int32_t iLumaStride = pCtx->pDec->iLinesize[0]; int32_t iChromaStride = pCtx->pDec->iLinesize[1]; pDstY = pCurLayer->pDec->pData[0] + ((iMbY * iLumaStride + iMbX) << 4); pDstCb = pCurLayer->pDec->pData[1] + ((iMbY * iChromaStride + iMbX) << 3); pDstCr = pCurLayer->pDec->pData[2] + ((iMbY * iChromaStride + iMbX) << 3); GetInterPred (pDstY, pDstCb, pDstCr, pCtx); return 0; } int32_t WelsTargetMbConstruction (PWelsDecoderContext pCtx) { PDqLayer pCurLayer = pCtx->pCurDqLayer; if (MB_TYPE_INTRA_PCM == pCurLayer->pMbType[pCurLayer->iMbXyIndex]) { //already decoded and reconstructed when parsing return 0; } else if (IS_INTRA (pCurLayer->pMbType[pCurLayer->iMbXyIndex])) { WelsMbIntraPredictionConstruction (pCtx, pCurLayer, 1); } else if (IS_INTER (pCurLayer->pMbType[pCurLayer->iMbXyIndex])) { //InterMB if (0 == pCurLayer->pCbp[pCurLayer->iMbXyIndex]) { //uiCbp==0 include SKIP WelsMbInterPrediction (pCtx, pCurLayer); } else { WelsMbInterConstruction (pCtx, pCurLayer); } } else { WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING, "WelsTargetMbConstruction():::::Unknown MB type: %d", pCurLayer->pMbType[pCurLayer->iMbXyIndex]); return -1; } return 0; } void WelsChromaDcIdct (int16_t* pBlock) { int32_t iStride = 32; int32_t iXStride = 16; int32_t iStride1 = iXStride + iStride; int16_t* pBlk = pBlock; int32_t iA, iB, iC, iD, iE; iA = pBlk[0]; iB = pBlk[iXStride]; iC = pBlk[iStride]; iD = pBlk[iStride1]; iE = iA - iB; iA += iB; iB = iC - iD; iC += iD; pBlk[0] = (iA + iC) >> 1; pBlk[iXStride] = (iE + iB) >> 1; pBlk[iStride] = (iA - iC) >> 1; pBlk[iStride1] = (iE - iB) >> 1; } void WelsMapNxNNeighToSampleNormal (PWelsNeighAvail pNeighAvail, int32_t* pSampleAvail) { if (pNeighAvail->iLeftAvail) { //left pSampleAvail[ 6] = pSampleAvail[12] = pSampleAvail[18] = pSampleAvail[24] = 1; } if (pNeighAvail->iLeftTopAvail) { //top_left pSampleAvail[0] = 1; } if (pNeighAvail->iTopAvail) { //top pSampleAvail[1] = pSampleAvail[2] = pSampleAvail[3] = pSampleAvail[4] = 1; } if (pNeighAvail->iRightTopAvail) { //top_right pSampleAvail[5] = 1; } } void WelsMapNxNNeighToSampleConstrain1 (PWelsNeighAvail pNeighAvail, int32_t* pSampleAvail) { if (pNeighAvail->iLeftAvail && IS_INTRA (pNeighAvail->iLeftType)) { //left pSampleAvail[ 6] = pSampleAvail[12] = pSampleAvail[18] = pSampleAvail[24] = 1; } if (pNeighAvail->iLeftTopAvail && IS_INTRA (pNeighAvail->iLeftTopType)) { //top_left pSampleAvail[0] = 1; } if (pNeighAvail->iTopAvail && IS_INTRA (pNeighAvail->iTopType)) { //top pSampleAvail[1] = pSampleAvail[2] = pSampleAvail[3] = pSampleAvail[4] = 1; } if (pNeighAvail->iRightTopAvail && IS_INTRA (pNeighAvail->iRightTopType)) { //top_right pSampleAvail[5] = 1; } } void WelsMap16x16NeighToSampleNormal (PWelsNeighAvail pNeighAvail, uint8_t* pSampleAvail) { if (pNeighAvail->iLeftAvail) { *pSampleAvail = (1 << 2); } if (pNeighAvail->iLeftTopAvail) { *pSampleAvail |= (1 << 1); } if (pNeighAvail->iTopAvail) { *pSampleAvail |= 1; } } void WelsMap16x16NeighToSampleConstrain1 (PWelsNeighAvail pNeighAvail, uint8_t* pSampleAvail) { if (pNeighAvail->iLeftAvail && IS_INTRA (pNeighAvail->iLeftType)) { *pSampleAvail = (1 << 2); } if (pNeighAvail->iLeftTopAvail && IS_INTRA (pNeighAvail->iLeftTopType)) { *pSampleAvail |= (1 << 1); } if (pNeighAvail->iTopAvail && IS_INTRA (pNeighAvail->iTopType)) { *pSampleAvail |= 1; } } int32_t ParseIntra4x4Mode (PWelsDecoderContext pCtx, PWelsNeighAvail pNeighAvail, int8_t* pIntraPredMode, PBitStringAux pBs, PDqLayer pCurDqLayer) { int32_t iSampleAvail[5 * 6] = { 0 }; //initialize as 0 int32_t iMbXy = pCurDqLayer->iMbXyIndex; int32_t iFinalMode, i; uint8_t uiNeighAvail = 0; uint32_t uiCode; int32_t iCode; pCtx->pMapNxNNeighToSampleFunc (pNeighAvail, iSampleAvail); uiNeighAvail = (iSampleAvail[6] << 2) | (iSampleAvail[0] << 1) | (iSampleAvail[1]); for (i = 0; i < 16; i++) { int32_t iPrevIntra4x4PredMode = 0; if (pCurDqLayer->sLayerInfo.pPps->bEntropyCodingModeFlag) { WELS_READ_VERIFY (ParseIntraPredModeLumaCabac (pCtx, iCode)); iPrevIntra4x4PredMode = iCode; } else { WELS_READ_VERIFY (BsGetOneBit (pBs, &uiCode)); iPrevIntra4x4PredMode = uiCode; } const int32_t kiPredMode = PredIntra4x4Mode (pIntraPredMode, i); int8_t iBestMode; if (pCurDqLayer->sLayerInfo.pPps->bEntropyCodingModeFlag) { if (iPrevIntra4x4PredMode == -1) iBestMode = kiPredMode; else iBestMode = iPrevIntra4x4PredMode + (iPrevIntra4x4PredMode >= kiPredMode); } else { if (iPrevIntra4x4PredMode) { iBestMode = kiPredMode; } else { WELS_READ_VERIFY (BsGetBits (pBs, 3, &uiCode)); iBestMode = uiCode + ((int32_t) uiCode >= kiPredMode); } } iFinalMode = CheckIntraNxNPredMode (&iSampleAvail[0], &iBestMode, i, false); if (iFinalMode == ERR_INVALID_INTRA4X4_MODE) { return ERR_INFO_INVALID_I4x4_PRED_MODE; } pCurDqLayer->pIntra4x4FinalMode[iMbXy][g_kuiScan4[i]] = iFinalMode; pIntraPredMode[g_kuiScan8[i]] = iBestMode; iSampleAvail[g_kuiCache30ScanIdx[i]] = 1; } ST32 (&pCurDqLayer->pIntraPredMode[iMbXy][0], LD32 (&pIntraPredMode[1 + 8 * 4])); pCurDqLayer->pIntraPredMode[iMbXy][4] = pIntraPredMode[4 + 8 * 1]; pCurDqLayer->pIntraPredMode[iMbXy][5] = pIntraPredMode[4 + 8 * 2]; pCurDqLayer->pIntraPredMode[iMbXy][6] = pIntraPredMode[4 + 8 * 3]; if (pCtx->pSps->uiChromaFormatIdc == 0)//no need parse chroma return ERR_NONE; if (pCurDqLayer->sLayerInfo.pPps->bEntropyCodingModeFlag) { WELS_READ_VERIFY (ParseIntraPredModeChromaCabac (pCtx, uiNeighAvail, iCode)); if (iCode > MAX_PRED_MODE_ID_CHROMA) { return ERR_INFO_INVALID_I_CHROMA_PRED_MODE; } pCurDqLayer->pChromaPredMode[iMbXy] = iCode; } else { WELS_READ_VERIFY (BsGetUe (pBs, &uiCode)); //intra_chroma_pred_mode if (uiCode > MAX_PRED_MODE_ID_CHROMA) { return ERR_INFO_INVALID_I_CHROMA_PRED_MODE; } pCurDqLayer->pChromaPredMode[iMbXy] = uiCode; } if (-1 == pCurDqLayer->pChromaPredMode[iMbXy] || CheckIntraChromaPredMode (uiNeighAvail, &pCurDqLayer->pChromaPredMode[iMbXy])) { return ERR_INFO_INVALID_I_CHROMA_PRED_MODE; } return ERR_NONE; } int32_t ParseIntra8x8Mode (PWelsDecoderContext pCtx, PWelsNeighAvail pNeighAvail, int8_t* pIntraPredMode, PBitStringAux pBs, PDqLayer pCurDqLayer) { // Similar with Intra_4x4, can put them together when needed int32_t iSampleAvail[5 * 6] = { 0 }; //initialize as 0 int32_t iMbXy = pCurDqLayer->iMbXyIndex; int32_t iFinalMode, i; uint8_t uiNeighAvail = 0; uint32_t uiCode; int32_t iCode; pCtx->pMapNxNNeighToSampleFunc (pNeighAvail, iSampleAvail); // Top-Right : Left : Top-Left : Top uiNeighAvail = (iSampleAvail[5] << 3) | (iSampleAvail[6] << 2) | (iSampleAvail[0] << 1) | (iSampleAvail[1]); pCurDqLayer->pIntraNxNAvailFlag[iMbXy] = uiNeighAvail; for (i = 0; i < 4; i++) { int32_t iPrevIntra4x4PredMode = 0; if (pCurDqLayer->sLayerInfo.pPps->bEntropyCodingModeFlag) { WELS_READ_VERIFY (ParseIntraPredModeLumaCabac (pCtx, iCode)); iPrevIntra4x4PredMode = iCode; } else { WELS_READ_VERIFY (BsGetOneBit (pBs, &uiCode)); iPrevIntra4x4PredMode = uiCode; } const int32_t kiPredMode = PredIntra4x4Mode (pIntraPredMode, i << 2); int8_t iBestMode; if (pCurDqLayer->sLayerInfo.pPps->bEntropyCodingModeFlag) { if (iPrevIntra4x4PredMode == -1) iBestMode = kiPredMode; else iBestMode = iPrevIntra4x4PredMode + (iPrevIntra4x4PredMode >= kiPredMode); } else { if (iPrevIntra4x4PredMode) { iBestMode = kiPredMode; } else { WELS_READ_VERIFY (BsGetBits (pBs, 3, &uiCode)); iBestMode = uiCode + ((int32_t) uiCode >= kiPredMode); } } iFinalMode = CheckIntraNxNPredMode (&iSampleAvail[0], &iBestMode, i << 2, true); if (iFinalMode == ERR_INVALID_INTRA4X4_MODE) { return ERR_INFO_INVALID_I4x4_PRED_MODE; } for (int j = 0; j < 4; j++) { pCurDqLayer->pIntra4x4FinalMode[iMbXy][g_kuiScan4[ (i << 2) + j]] = iFinalMode; pIntraPredMode[g_kuiScan8[ (i << 2) + j]] = iBestMode; iSampleAvail[g_kuiCache30ScanIdx[ (i << 2) + j]] = 1; } } ST32 (&pCurDqLayer->pIntraPredMode[iMbXy][0], LD32 (&pIntraPredMode[1 + 8 * 4])); pCurDqLayer->pIntraPredMode[iMbXy][4] = pIntraPredMode[4 + 8 * 1]; pCurDqLayer->pIntraPredMode[iMbXy][5] = pIntraPredMode[4 + 8 * 2]; pCurDqLayer->pIntraPredMode[iMbXy][6] = pIntraPredMode[4 + 8 * 3]; if (pCurDqLayer->sLayerInfo.pPps->bEntropyCodingModeFlag) { WELS_READ_VERIFY (ParseIntraPredModeChromaCabac (pCtx, uiNeighAvail, iCode)); if (iCode > MAX_PRED_MODE_ID_CHROMA) { return ERR_INFO_INVALID_I_CHROMA_PRED_MODE; } pCurDqLayer->pChromaPredMode[iMbXy] = iCode; } else { WELS_READ_VERIFY (BsGetUe (pBs, &uiCode)); //intra_chroma_pred_mode if (uiCode > MAX_PRED_MODE_ID_CHROMA) { return ERR_INFO_INVALID_I_CHROMA_PRED_MODE; } pCurDqLayer->pChromaPredMode[iMbXy] = uiCode; } if (-1 == pCurDqLayer->pChromaPredMode[iMbXy] || CheckIntraChromaPredMode (uiNeighAvail, &pCurDqLayer->pChromaPredMode[iMbXy])) { return ERR_INFO_INVALID_I_CHROMA_PRED_MODE; } return ERR_NONE; } int32_t ParseIntra16x16Mode (PWelsDecoderContext pCtx, PWelsNeighAvail pNeighAvail, PBitStringAux pBs, PDqLayer pCurDqLayer) { int32_t iMbXy = pCurDqLayer->iMbXyIndex; uint8_t uiNeighAvail = 0; //0x07 = 0 1 1 1, means left, top-left, top avail or not. (1: avail, 0: unavail) uint32_t uiCode; int32_t iCode; pCtx->pMap16x16NeighToSampleFunc (pNeighAvail, &uiNeighAvail); if (CheckIntra16x16PredMode (uiNeighAvail, &pCurDqLayer->pIntraPredMode[iMbXy][7])) { //invalid iPredMode, must stop decoding return ERR_INFO_INVALID_I16x16_PRED_MODE; } if (pCtx->pSps->uiChromaFormatIdc == 0) return ERR_NONE; if (pCurDqLayer->sLayerInfo.pPps->bEntropyCodingModeFlag) { WELS_READ_VERIFY (ParseIntraPredModeChromaCabac (pCtx, uiNeighAvail, iCode)); if (iCode > MAX_PRED_MODE_ID_CHROMA) { return ERR_INFO_INVALID_I_CHROMA_PRED_MODE; } pCurDqLayer->pChromaPredMode[iMbXy] = iCode; } else { WELS_READ_VERIFY (BsGetUe (pBs, &uiCode)); //intra_chroma_pred_mode if (uiCode > MAX_PRED_MODE_ID_CHROMA) { return ERR_INFO_INVALID_I_CHROMA_PRED_MODE; } pCurDqLayer->pChromaPredMode[iMbXy] = uiCode; } if (-1 == pCurDqLayer->pChromaPredMode[iMbXy] || CheckIntraChromaPredMode (uiNeighAvail, &pCurDqLayer->pChromaPredMode[iMbXy])) { return ERR_INFO_INVALID_I_CHROMA_PRED_MODE; } return ERR_NONE; } int32_t WelsDecodeMbCabacISliceBaseMode0 (PWelsDecoderContext pCtx, uint32_t& uiEosFlag) { PDqLayer pCurLayer = pCtx->pCurDqLayer; PBitStringAux pBsAux = pCurLayer->pBitStringAux; PSlice pSlice = &pCurLayer->sLayerInfo.sSliceInLayer; PSliceHeader pSliceHeader = &pSlice->sSliceHeaderExt.sSliceHeader; SWelsNeighAvail sNeighAvail; int32_t iScanIdxStart = pSlice->sSliceHeaderExt.uiScanIdxStart; int32_t iScanIdxEnd = pSlice->sSliceHeaderExt.uiScanIdxEnd; int32_t iMbXy = pCurLayer->iMbXyIndex; int32_t i; uint32_t uiMbType = 0, uiCbp = 0, uiCbpLuma = 0, uiCbpChroma = 0; ENFORCE_STACK_ALIGN_1D (uint8_t, pNonZeroCount, 48, 16); pCurLayer->pNoSubMbPartSizeLessThan8x8Flag[iMbXy] = true; pCurLayer->pTransformSize8x8Flag[iMbXy] = false; pCurLayer->pInterPredictionDoneFlag[iMbXy] = 0; pCurLayer->pResidualPredFlag[iMbXy] = pSlice->sSliceHeaderExt.bDefaultResidualPredFlag; GetNeighborAvailMbType (&sNeighAvail, pCurLayer); WELS_READ_VERIFY (ParseMBTypeISliceCabac (pCtx, &sNeighAvail, uiMbType)); if (uiMbType > 25) { return ERR_INFO_INVALID_MB_TYPE; } else if (!pCtx->pSps->uiChromaFormatIdc && ((uiMbType >= 5 && uiMbType <= 12) || (uiMbType >= 17 && uiMbType <= 24))) { return ERR_INFO_INVALID_MB_TYPE; } else if (25 == uiMbType) { //I_PCM WELS_READ_VERIFY (ParseIPCMInfoCabac (pCtx)); pSlice->iLastDeltaQp = 0; WELS_READ_VERIFY (ParseEndOfSliceCabac (pCtx, uiEosFlag)); if (uiEosFlag) { RestoreCabacDecEngineToBS (pCtx->pCabacDecEngine, pCtx->pCurDqLayer->pBitStringAux); } return ERR_NONE; } else if (0 == uiMbType) { //I4x4 ENFORCE_STACK_ALIGN_1D (int8_t, pIntraPredMode, 48, 16); pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA4x4; if (pCtx->pPps->bTransform8x8ModeFlag) { // Transform 8x8 cabac will be added soon WELS_READ_VERIFY (ParseTransformSize8x8FlagCabac (pCtx, &sNeighAvail, pCtx->pCurDqLayer->pTransformSize8x8Flag[iMbXy])); } if (pCtx->pCurDqLayer->pTransformSize8x8Flag[iMbXy]) { uiMbType = pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA8x8; pCtx->pFillInfoCacheIntraNxNFunc (&sNeighAvail, pNonZeroCount, pIntraPredMode, pCurLayer); WELS_READ_VERIFY (ParseIntra8x8Mode (pCtx, &sNeighAvail, pIntraPredMode, pBsAux, pCurLayer)); } else { pCtx->pFillInfoCacheIntraNxNFunc (&sNeighAvail, pNonZeroCount, pIntraPredMode, pCurLayer); WELS_READ_VERIFY (ParseIntra4x4Mode (pCtx, &sNeighAvail, pIntraPredMode, pBsAux, pCurLayer)); } //get uiCbp for I4x4 WELS_READ_VERIFY (ParseCbpInfoCabac (pCtx, &sNeighAvail, uiCbp)); pCurLayer->pCbp[iMbXy] = uiCbp; pSlice->iLastDeltaQp = uiCbp == 0 ? 0 : pSlice->iLastDeltaQp; uiCbpChroma = pCtx->pSps->uiChromaFormatIdc ? uiCbp >> 4 : 0; uiCbpLuma = uiCbp & 15; } else { //I16x16; pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA16x16; pCurLayer->pTransformSize8x8Flag[iMbXy] = false; pCurLayer->pNoSubMbPartSizeLessThan8x8Flag[iMbXy] = true; pCurLayer->pIntraPredMode[iMbXy][7] = (uiMbType - 1) & 3; pCurLayer->pCbp[iMbXy] = g_kuiI16CbpTable[ (uiMbType - 1) >> 2]; uiCbpChroma = pCtx->pSps->uiChromaFormatIdc ? pCurLayer->pCbp[iMbXy] >> 4 : 0 ; uiCbpLuma = pCurLayer->pCbp[iMbXy] & 15; WelsFillCacheNonZeroCount (&sNeighAvail, pNonZeroCount, pCurLayer); WELS_READ_VERIFY (ParseIntra16x16Mode (pCtx, &sNeighAvail, pBsAux, pCurLayer)); } ST32 (&pCurLayer->pNzc[iMbXy][0], 0); ST32 (&pCurLayer->pNzc[iMbXy][4], 0); ST32 (&pCurLayer->pNzc[iMbXy][8], 0); ST32 (&pCurLayer->pNzc[iMbXy][12], 0); ST32 (&pCurLayer->pNzc[iMbXy][16], 0); ST32 (&pCurLayer->pNzc[iMbXy][20], 0); pCurLayer->pCbfDc[iMbXy] = 0; if (pCurLayer->pCbp[iMbXy] == 0 && IS_INTRANxN (pCurLayer->pMbType[iMbXy])) { pCurLayer->pLumaQp[iMbXy] = pSlice->iLastMbQp; for (i = 0; i < 2; i++) { pCurLayer->pChromaQp[iMbXy][i] = g_kuiChromaQpTable[WELS_CLIP3 ((pCurLayer->pLumaQp[iMbXy] + pSliceHeader->pPps->iChromaQpIndexOffset[i]), 0, 51)]; } } if (pCurLayer->pCbp[iMbXy] || MB_TYPE_INTRA16x16 == pCurLayer->pMbType[iMbXy]) { memset (pCurLayer->pScaledTCoeff[iMbXy], 0, 384 * sizeof (pCurLayer->pScaledTCoeff[iMbXy][0])); int32_t iQpDelta, iId8x8, iId4x4; WELS_READ_VERIFY (ParseDeltaQpCabac (pCtx, iQpDelta)); if (iQpDelta > 25 || iQpDelta < -26) {//out of iQpDelta range return ERR_INFO_INVALID_QP; } pCurLayer->pLumaQp[iMbXy] = (pSlice->iLastMbQp + iQpDelta + 52) % 52; //update last_mb_qp pSlice->iLastMbQp = pCurLayer->pLumaQp[iMbXy]; for (i = 0; i < 2; i++) { pCurLayer->pChromaQp[iMbXy][i] = g_kuiChromaQpTable[WELS_CLIP3 ((pSlice->iLastMbQp + pSliceHeader->pPps->iChromaQpIndexOffset[i]), 0, 51)]; } if (MB_TYPE_INTRA16x16 == pCurLayer->pMbType[iMbXy]) { //step1: Luma DC WELS_READ_VERIFY (ParseResidualBlockCabac (&sNeighAvail, pNonZeroCount, pBsAux, 0, 16, g_kuiLumaDcZigzagScan, I16_LUMA_DC, pCurLayer->pScaledTCoeff[iMbXy], pCurLayer->pLumaQp[iMbXy], pCtx)); //step2: Luma AC if (uiCbpLuma) { for (i = 0; i < 16; i++) { WELS_READ_VERIFY (ParseResidualBlockCabac (&sNeighAvail, pNonZeroCount, pBsAux, i, iScanIdxEnd - WELS_MAX (iScanIdxStart, 1) + 1, g_kuiZigzagScan + WELS_MAX (iScanIdxStart, 1), I16_LUMA_AC, pCurLayer->pScaledTCoeff[iMbXy] + (i << 4), pCurLayer->pLumaQp[iMbXy], pCtx)); } ST32 (&pCurLayer->pNzc[iMbXy][0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32 (&pCurLayer->pNzc[iMbXy][4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32 (&pCurLayer->pNzc[iMbXy][8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32 (&pCurLayer->pNzc[iMbXy][12], LD32 (&pNonZeroCount[1 + 8 * 4])); } else { //pNonZeroCount = 0 ST32 (&pCurLayer->pNzc[iMbXy][0], 0); ST32 (&pCurLayer->pNzc[iMbXy][4], 0); ST32 (&pCurLayer->pNzc[iMbXy][8], 0); ST32 (&pCurLayer->pNzc[iMbXy][12], 0); } } else { //non-MB_TYPE_INTRA16x16 if (pCurLayer->pTransformSize8x8Flag[iMbXy]) { // Transform 8x8 support for CABAC for (iId8x8 = 0; iId8x8 < 4; iId8x8++) { if (uiCbpLuma & (1 << iId8x8)) { WELS_READ_VERIFY (ParseResidualBlockCabac8x8 (&sNeighAvail, pNonZeroCount, pBsAux, (iId8x8 << 2), iScanIdxEnd - iScanIdxStart + 1, g_kuiZigzagScan8x8 + iScanIdxStart, LUMA_DC_AC_INTRA_8, pCurLayer->pScaledTCoeff[iMbXy] + (iId8x8 << 6), pCurLayer->pLumaQp[iMbXy], pCtx)); } else { ST16 (&pNonZeroCount[g_kCacheNzcScanIdx[ (iId8x8 << 2)]], 0); ST16 (&pNonZeroCount[g_kCacheNzcScanIdx[ (iId8x8 << 2) + 2]], 0); } } ST32 (&pCurLayer->pNzc[iMbXy][0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32 (&pCurLayer->pNzc[iMbXy][4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32 (&pCurLayer->pNzc[iMbXy][8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32 (&pCurLayer->pNzc[iMbXy][12], LD32 (&pNonZeroCount[1 + 8 * 4])); } else { for (iId8x8 = 0; iId8x8 < 4; iId8x8++) { if (uiCbpLuma & (1 << iId8x8)) { int32_t iIdx = (iId8x8 << 2); for (iId4x4 = 0; iId4x4 < 4; iId4x4++) { //Luma (DC and AC decoding together) WELS_READ_VERIFY (ParseResidualBlockCabac (&sNeighAvail, pNonZeroCount, pBsAux, iIdx, iScanIdxEnd - iScanIdxStart + 1, g_kuiZigzagScan + iScanIdxStart, LUMA_DC_AC_INTRA, pCurLayer->pScaledTCoeff[iMbXy] + (iIdx << 4), pCurLayer->pLumaQp[iMbXy], pCtx)); iIdx++; } } else { ST16 (&pNonZeroCount[g_kCacheNzcScanIdx[ (iId8x8 << 2)]], 0); ST16 (&pNonZeroCount[g_kCacheNzcScanIdx[ (iId8x8 << 2) + 2]], 0); } } ST32 (&pCurLayer->pNzc[iMbXy][0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32 (&pCurLayer->pNzc[iMbXy][4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32 (&pCurLayer->pNzc[iMbXy][8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32 (&pCurLayer->pNzc[iMbXy][12], LD32 (&pNonZeroCount[1 + 8 * 4])); } } int32_t iMbResProperty; //chroma //step1: DC if (1 == uiCbpChroma || 2 == uiCbpChroma) { //Cb Cr for (i = 0; i < 2; i++) { iMbResProperty = i ? CHROMA_DC_V : CHROMA_DC_U; WELS_READ_VERIFY (ParseResidualBlockCabac (&sNeighAvail, pNonZeroCount, pBsAux, 16 + (i << 2), 4, g_kuiChromaDcScan, iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + 256 + (i << 6), pCurLayer->pChromaQp[iMbXy][i], pCtx)); } } //step2: AC if (2 == uiCbpChroma) { for (i = 0; i < 2; i++) { //Cb Cr iMbResProperty = i ? CHROMA_AC_V : CHROMA_AC_U; int32_t iIdx = 16 + (i << 2); for (iId4x4 = 0; iId4x4 < 4; iId4x4++) { WELS_READ_VERIFY (ParseResidualBlockCabac (&sNeighAvail, pNonZeroCount, pBsAux, iIdx, iScanIdxEnd - WELS_MAX (iScanIdxStart, 1) + 1, g_kuiZigzagScan + WELS_MAX (iScanIdxStart, 1), iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + (iIdx << 4), pCurLayer->pChromaQp[iMbXy][i], pCtx)); iIdx++; } } ST16 (&pCurLayer->pNzc[iMbXy][16], LD16 (&pNonZeroCount[6 + 8 * 1])); ST16 (&pCurLayer->pNzc[iMbXy][20], LD16 (&pNonZeroCount[6 + 8 * 2])); ST16 (&pCurLayer->pNzc[iMbXy][18], LD16 (&pNonZeroCount[6 + 8 * 4])); ST16 (&pCurLayer->pNzc[iMbXy][22], LD16 (&pNonZeroCount[6 + 8 * 5])); } else { ST16 (&pCurLayer->pNzc[iMbXy][16], 0); ST16 (&pCurLayer->pNzc[iMbXy][20], 0); ST16 (&pCurLayer->pNzc[iMbXy][18], 0); ST16 (&pCurLayer->pNzc[iMbXy][22], 0); } } else { ST32 (&pCurLayer->pNzc[iMbXy][0], 0); ST32 (&pCurLayer->pNzc[iMbXy][4], 0); ST32 (&pCurLayer->pNzc[iMbXy][8], 0); ST32 (&pCurLayer->pNzc[iMbXy][12], 0); ST32 (&pCurLayer->pNzc[iMbXy][16], 0); ST32 (&pCurLayer->pNzc[iMbXy][20], 0); } WELS_READ_VERIFY (ParseEndOfSliceCabac (pCtx, uiEosFlag)); if (uiEosFlag) { RestoreCabacDecEngineToBS (pCtx->pCabacDecEngine, pCtx->pCurDqLayer->pBitStringAux); } return ERR_NONE; } int32_t WelsDecodeMbCabacISlice (PWelsDecoderContext pCtx, PNalUnit pNalCur, uint32_t& uiEosFlag) { WELS_READ_VERIFY (WelsDecodeMbCabacISliceBaseMode0 (pCtx, uiEosFlag)); return ERR_NONE; } int32_t WelsDecodeMbCabacPSliceBaseMode0 (PWelsDecoderContext pCtx, PWelsNeighAvail pNeighAvail, uint32_t& uiEosFlag) { PDqLayer pCurLayer = pCtx->pCurDqLayer; PBitStringAux pBsAux = pCurLayer->pBitStringAux; PSlice pSlice = &pCurLayer->sLayerInfo.sSliceInLayer; PSliceHeader pSliceHeader = &pSlice->sSliceHeaderExt.sSliceHeader; int32_t iScanIdxStart = pSlice->sSliceHeaderExt.uiScanIdxStart; int32_t iScanIdxEnd = pSlice->sSliceHeaderExt.uiScanIdxEnd; int32_t iMbXy = pCurLayer->iMbXyIndex; int32_t iMbResProperty; int32_t i; uint32_t uiMbType = 0, uiCbp = 0, uiCbpLuma = 0, uiCbpChroma = 0; ENFORCE_STACK_ALIGN_1D (uint8_t, pNonZeroCount, 48, 16); pCurLayer->pInterPredictionDoneFlag[iMbXy] = 0; WELS_READ_VERIFY (ParseMBTypePSliceCabac (pCtx, pNeighAvail, uiMbType)); // uiMbType = 4 is not allowded. if (uiMbType < 4) { //Inter mode int16_t pMotionVector[LIST_A][30][MV_A]; int16_t pMvdCache[LIST_A][30][MV_A]; int8_t pRefIndex[LIST_A][30]; pCurLayer->pMbType[iMbXy] = g_ksInterMbTypeInfo[uiMbType].iType; WelsFillCacheInterCabac (pNeighAvail, pNonZeroCount, pMotionVector, pMvdCache, pRefIndex, pCurLayer); WELS_READ_VERIFY (ParseInterMotionInfoCabac (pCtx, pNeighAvail, pNonZeroCount, pMotionVector, pMvdCache, pRefIndex)); pCurLayer->pInterPredictionDoneFlag[iMbXy] = 0; } else { //Intra mode uiMbType -= 5; if (uiMbType > 25) return ERR_INFO_INVALID_MB_TYPE; if (!pCtx->pSps->uiChromaFormatIdc && ((uiMbType >= 5 && uiMbType <= 12) || (uiMbType >= 17 && uiMbType <= 24))) return ERR_INFO_INVALID_MB_TYPE; if (25 == uiMbType) { //I_PCM WELS_READ_VERIFY (ParseIPCMInfoCabac (pCtx)); pSlice->iLastDeltaQp = 0; WELS_READ_VERIFY (ParseEndOfSliceCabac (pCtx, uiEosFlag)); if (uiEosFlag) { RestoreCabacDecEngineToBS (pCtx->pCabacDecEngine, pCtx->pCurDqLayer->pBitStringAux); } return ERR_NONE; } else { //normal Intra mode if (0 == uiMbType) { //Intra4x4 ENFORCE_STACK_ALIGN_1D (int8_t, pIntraPredMode, 48, 16); pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA4x4; if (pCtx->pPps->bTransform8x8ModeFlag) { WELS_READ_VERIFY (ParseTransformSize8x8FlagCabac (pCtx, pNeighAvail, pCtx->pCurDqLayer->pTransformSize8x8Flag[iMbXy])); } if (pCtx->pCurDqLayer->pTransformSize8x8Flag[iMbXy]) { uiMbType = pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA8x8; pCtx->pFillInfoCacheIntraNxNFunc (pNeighAvail, pNonZeroCount, pIntraPredMode, pCurLayer); WELS_READ_VERIFY (ParseIntra8x8Mode (pCtx, pNeighAvail, pIntraPredMode, pBsAux, pCurLayer)); } else { pCtx->pFillInfoCacheIntraNxNFunc (pNeighAvail, pNonZeroCount, pIntraPredMode, pCurLayer); WELS_READ_VERIFY (ParseIntra4x4Mode (pCtx, pNeighAvail, pIntraPredMode, pBsAux, pCurLayer)); } } else { //Intra16x16 pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA16x16; pCurLayer->pTransformSize8x8Flag[iMbXy] = false; pCurLayer->pNoSubMbPartSizeLessThan8x8Flag[iMbXy] = true; pCurLayer->pIntraPredMode[iMbXy][7] = (uiMbType - 1) & 3; pCurLayer->pCbp[iMbXy] = g_kuiI16CbpTable[ (uiMbType - 1) >> 2]; uiCbpChroma = pCtx->pSps->uiChromaFormatIdc ? pCurLayer->pCbp[iMbXy] >> 4 : 0; uiCbpLuma = pCurLayer->pCbp[iMbXy] & 15; WelsFillCacheNonZeroCount (pNeighAvail, pNonZeroCount, pCurLayer); WELS_READ_VERIFY (ParseIntra16x16Mode (pCtx, pNeighAvail, pBsAux, pCurLayer)); } } } ST32 (&pCurLayer->pNzc[iMbXy][0], 0); ST32 (&pCurLayer->pNzc[iMbXy][4], 0); ST32 (&pCurLayer->pNzc[iMbXy][8], 0); ST32 (&pCurLayer->pNzc[iMbXy][12], 0); ST32 (&pCurLayer->pNzc[iMbXy][16], 0); ST32 (&pCurLayer->pNzc[iMbXy][20], 0); if (MB_TYPE_INTRA16x16 != pCurLayer->pMbType[iMbXy]) { WELS_READ_VERIFY (ParseCbpInfoCabac (pCtx, pNeighAvail, uiCbp)); pCurLayer->pCbp[iMbXy] = uiCbp; pSlice->iLastDeltaQp = uiCbp == 0 ? 0 : pSlice->iLastDeltaQp; uiCbpChroma = pCtx->pSps->uiChromaFormatIdc ? pCurLayer->pCbp[iMbXy] >> 4 : 0 ; uiCbpLuma = pCurLayer->pCbp[iMbXy] & 15; } if (pCurLayer->pCbp[iMbXy] || MB_TYPE_INTRA16x16 == pCurLayer->pMbType[iMbXy]) { if (MB_TYPE_INTRA16x16 != pCurLayer->pMbType[iMbXy]) { // Need modification when B picutre add in bool bNeedParseTransformSize8x8Flag = (((pCurLayer->pMbType[iMbXy] >= MB_TYPE_16x16 && pCurLayer->pMbType[iMbXy] <= MB_TYPE_8x16) || pCurLayer->pNoSubMbPartSizeLessThan8x8Flag[iMbXy]) && (pCurLayer->pMbType[iMbXy] != MB_TYPE_INTRA8x8) && (pCurLayer->pMbType[iMbXy] != MB_TYPE_INTRA4x4) && ((pCurLayer->pCbp[iMbXy] & 0x0F) > 0) && (pCtx->pPps->bTransform8x8ModeFlag)); if (bNeedParseTransformSize8x8Flag) { WELS_READ_VERIFY (ParseTransformSize8x8FlagCabac (pCtx, pNeighAvail, pCtx->pCurDqLayer->pTransformSize8x8Flag[iMbXy])); //transform_size_8x8_flag } } memset (pCurLayer->pScaledTCoeff[iMbXy], 0, 384 * sizeof (pCurLayer->pScaledTCoeff[iMbXy][0])); int32_t iQpDelta, iId8x8, iId4x4; WELS_READ_VERIFY (ParseDeltaQpCabac (pCtx, iQpDelta)); if (iQpDelta > 25 || iQpDelta < -26) { //out of iQpDelta range return ERR_INFO_INVALID_QP; } pCurLayer->pLumaQp[iMbXy] = (pSlice->iLastMbQp + iQpDelta + 52) % 52; //update last_mb_qp pSlice->iLastMbQp = pCurLayer->pLumaQp[iMbXy]; for (i = 0; i < 2; i++) { pCurLayer->pChromaQp[iMbXy][i] = g_kuiChromaQpTable[WELS_CLIP3 (pSlice->iLastMbQp + pSliceHeader->pPps->iChromaQpIndexOffset[i], 0, 51)]; } if (MB_TYPE_INTRA16x16 == pCurLayer->pMbType[iMbXy]) { //step1: Luma DC WELS_READ_VERIFY (ParseResidualBlockCabac (pNeighAvail, pNonZeroCount, pBsAux, 0, 16, g_kuiLumaDcZigzagScan, I16_LUMA_DC, pCurLayer->pScaledTCoeff[iMbXy], pCurLayer->pLumaQp[iMbXy], pCtx)); //step2: Luma AC if (uiCbpLuma) { for (i = 0; i < 16; i++) { WELS_READ_VERIFY (ParseResidualBlockCabac (pNeighAvail, pNonZeroCount, pBsAux, i, iScanIdxEnd - WELS_MAX (iScanIdxStart, 1) + 1, g_kuiZigzagScan + WELS_MAX (iScanIdxStart, 1), I16_LUMA_AC, pCurLayer->pScaledTCoeff[iMbXy] + (i << 4), pCurLayer->pLumaQp[iMbXy], pCtx)); } ST32 (&pCurLayer->pNzc[iMbXy][0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32 (&pCurLayer->pNzc[iMbXy][4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32 (&pCurLayer->pNzc[iMbXy][8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32 (&pCurLayer->pNzc[iMbXy][12], LD32 (&pNonZeroCount[1 + 8 * 4])); } else { ST32 (&pCurLayer->pNzc[iMbXy][0], 0); ST32 (&pCurLayer->pNzc[iMbXy][4], 0); ST32 (&pCurLayer->pNzc[iMbXy][8], 0); ST32 (&pCurLayer->pNzc[iMbXy][12], 0); } } else { //non-MB_TYPE_INTRA16x16 if (pCtx->pCurDqLayer->pTransformSize8x8Flag[iMbXy]) { // Transform 8x8 support for CABAC for (iId8x8 = 0; iId8x8 < 4; iId8x8++) { if (uiCbpLuma & (1 << iId8x8)) { WELS_READ_VERIFY (ParseResidualBlockCabac8x8 (pNeighAvail, pNonZeroCount, pBsAux, (iId8x8 << 2), iScanIdxEnd - iScanIdxStart + 1, g_kuiZigzagScan8x8 + iScanIdxStart, IS_INTRA (pCurLayer->pMbType[iMbXy]) ? LUMA_DC_AC_INTRA_8 : LUMA_DC_AC_INTER_8, pCurLayer->pScaledTCoeff[iMbXy] + (iId8x8 << 6), pCurLayer->pLumaQp[iMbXy], pCtx)); } else { ST16 (&pNonZeroCount[g_kCacheNzcScanIdx[ (iId8x8 << 2)]], 0); ST16 (&pNonZeroCount[g_kCacheNzcScanIdx[ (iId8x8 << 2) + 2]], 0); } } ST32 (&pCurLayer->pNzc[iMbXy][0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32 (&pCurLayer->pNzc[iMbXy][4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32 (&pCurLayer->pNzc[iMbXy][8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32 (&pCurLayer->pNzc[iMbXy][12], LD32 (&pNonZeroCount[1 + 8 * 4])); } else { iMbResProperty = (IS_INTRA (pCurLayer->pMbType[iMbXy])) ? LUMA_DC_AC_INTRA : LUMA_DC_AC_INTER; for (iId8x8 = 0; iId8x8 < 4; iId8x8++) { if (uiCbpLuma & (1 << iId8x8)) { int32_t iIdx = (iId8x8 << 2); for (iId4x4 = 0; iId4x4 < 4; iId4x4++) { //Luma (DC and AC decoding together) WELS_READ_VERIFY (ParseResidualBlockCabac (pNeighAvail, pNonZeroCount, pBsAux, iIdx, iScanIdxEnd - iScanIdxStart + 1, g_kuiZigzagScan + iScanIdxStart, iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + (iIdx << 4), pCurLayer->pLumaQp[iMbXy], pCtx)); iIdx++; } } else { ST16 (&pNonZeroCount[g_kCacheNzcScanIdx[iId8x8 << 2]], 0); ST16 (&pNonZeroCount[g_kCacheNzcScanIdx[ (iId8x8 << 2) + 2]], 0); } } ST32 (&pCurLayer->pNzc[iMbXy][0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32 (&pCurLayer->pNzc[iMbXy][4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32 (&pCurLayer->pNzc[iMbXy][8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32 (&pCurLayer->pNzc[iMbXy][12], LD32 (&pNonZeroCount[1 + 8 * 4])); } } //chroma //step1: DC if (1 == uiCbpChroma || 2 == uiCbpChroma) { for (i = 0; i < 2; i++) { if (IS_INTRA (pCurLayer->pMbType[iMbXy])) iMbResProperty = i ? CHROMA_DC_V : CHROMA_DC_U; else iMbResProperty = i ? CHROMA_DC_V_INTER : CHROMA_DC_U_INTER; WELS_READ_VERIFY (ParseResidualBlockCabac (pNeighAvail, pNonZeroCount, pBsAux, 16 + (i << 2), 4, g_kuiChromaDcScan, iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + 256 + (i << 6), pCurLayer->pChromaQp[iMbXy][i], pCtx)); } } //step2: AC if (2 == uiCbpChroma) { for (i = 0; i < 2; i++) { if (IS_INTRA (pCurLayer->pMbType[iMbXy])) iMbResProperty = i ? CHROMA_AC_V : CHROMA_AC_U; else iMbResProperty = i ? CHROMA_AC_V_INTER : CHROMA_AC_U_INTER; int32_t index = 16 + (i << 2); for (iId4x4 = 0; iId4x4 < 4; iId4x4++) { WELS_READ_VERIFY (ParseResidualBlockCabac (pNeighAvail, pNonZeroCount, pBsAux, index, iScanIdxEnd - WELS_MAX (iScanIdxStart, 1) + 1, g_kuiZigzagScan + WELS_MAX (iScanIdxStart, 1), iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + (index << 4), pCurLayer->pChromaQp[iMbXy][i], pCtx)); index++; } } ST16 (&pCurLayer->pNzc[iMbXy][16], LD16 (&pNonZeroCount[6 + 8 * 1])); ST16 (&pCurLayer->pNzc[iMbXy][20], LD16 (&pNonZeroCount[6 + 8 * 2])); ST16 (&pCurLayer->pNzc[iMbXy][18], LD16 (&pNonZeroCount[6 + 8 * 4])); ST16 (&pCurLayer->pNzc[iMbXy][22], LD16 (&pNonZeroCount[6 + 8 * 5])); } else { ST32 (&pCurLayer->pNzc[iMbXy][16], 0); ST32 (&pCurLayer->pNzc[iMbXy][20], 0); } } else { pCurLayer->pLumaQp[iMbXy] = pSlice->iLastMbQp; for (i = 0; i < 2; i++) { pCurLayer->pChromaQp[iMbXy][i] = g_kuiChromaQpTable[WELS_CLIP3 (pCurLayer->pLumaQp[iMbXy] + pSliceHeader->pPps->iChromaQpIndexOffset[i], 0, 51)]; } } WELS_READ_VERIFY (ParseEndOfSliceCabac (pCtx, uiEosFlag)); if (uiEosFlag) { RestoreCabacDecEngineToBS (pCtx->pCabacDecEngine, pCtx->pCurDqLayer->pBitStringAux); } return ERR_NONE; } int32_t WelsDecodeMbCabacPSlice (PWelsDecoderContext pCtx, PNalUnit pNalCur, uint32_t& uiEosFlag) { PDqLayer pCurLayer = pCtx->pCurDqLayer; PSlice pSlice = &pCurLayer->sLayerInfo.sSliceInLayer; PSliceHeader pSliceHeader = &pSlice->sSliceHeaderExt.sSliceHeader; PPicture* ppRefPic = pCtx->sRefPic.pRefList[LIST_0]; uint32_t uiCode; int32_t iMbXy = pCurLayer->iMbXyIndex; int32_t i; SWelsNeighAvail uiNeighAvail; pCurLayer->pCbp[iMbXy] = 0; pCurLayer->pCbfDc[iMbXy] = 0; pCurLayer->pChromaPredMode[iMbXy] = C_PRED_DC; pCurLayer->pNoSubMbPartSizeLessThan8x8Flag[iMbXy] = true; pCurLayer->pTransformSize8x8Flag[iMbXy] = false; GetNeighborAvailMbType (&uiNeighAvail, pCurLayer); WELS_READ_VERIFY (ParseSkipFlagCabac (pCtx, &uiNeighAvail, uiCode)); if (uiCode) { int16_t pMv[2] = {0}; pCurLayer->pMbType[iMbXy] = MB_TYPE_SKIP; ST32 (&pCurLayer->pNzc[iMbXy][0], 0); ST32 (&pCurLayer->pNzc[iMbXy][4], 0); ST32 (&pCurLayer->pNzc[iMbXy][8], 0); ST32 (&pCurLayer->pNzc[iMbXy][12], 0); ST32 (&pCurLayer->pNzc[iMbXy][16], 0); ST32 (&pCurLayer->pNzc[iMbXy][20], 0); pCurLayer->pInterPredictionDoneFlag[iMbXy] = 0; memset (pCurLayer->pRefIndex[0][iMbXy], 0, sizeof (int8_t) * 16); pCtx->bMbRefConcealed = pCtx->bRPLRError || pCtx->bMbRefConcealed || ! (ppRefPic[0] && ppRefPic[0]->bIsComplete); //predict mv PredPSkipMvFromNeighbor (pCurLayer, pMv); for (i = 0; i < 16; i++) { ST32 (pCurLayer->pMv[0][iMbXy][i], * (uint32_t*)pMv); ST32 (pCurLayer->pMvd[0][iMbXy][i], 0); } //if (!pSlice->sSliceHeaderExt.bDefaultResidualPredFlag) { // memset (pCurLayer->pScaledTCoeff[iMbXy], 0, 384 * sizeof (int16_t)); //} //reset rS pCurLayer->pLumaQp[iMbXy] = pSlice->iLastMbQp; //??????????????? dqaunt of previous mb for (i = 0; i < 2; i++) { pCurLayer->pChromaQp[iMbXy][i] = g_kuiChromaQpTable[WELS_CLIP3 (pCurLayer->pLumaQp[iMbXy] + pSliceHeader->pPps->iChromaQpIndexOffset[i], 0, 51)]; } //for neighboring CABAC usage pSlice->iLastDeltaQp = 0; WELS_READ_VERIFY (ParseEndOfSliceCabac (pCtx, uiEosFlag)); return ERR_NONE; } WELS_READ_VERIFY (WelsDecodeMbCabacPSliceBaseMode0 (pCtx, &uiNeighAvail, uiEosFlag)); return ERR_NONE; } // Calculate deqaunt coeff scaling list value int32_t WelsCalcDeqCoeffScalingList (PWelsDecoderContext pCtx) { if (pCtx->pSps->bSeqScalingMatrixPresentFlag || pCtx->pPps->bPicScalingMatrixPresentFlag) { pCtx->bUseScalingList = true; if (!pCtx->bDequantCoeff4x4Init || (pCtx->iDequantCoeffPpsid != pCtx->pPps->iPpsId)) { int i, q, x, y; // Rewrite pps scaling list for scalingList present flag=0 if (pCtx->bSpsLatePps) { for (i = 0; i < 12; i++) { //if (!pCtx->pSps->bSeqScalingListPresentFlag[i]) { if (!pCtx->pPps->bPicScalingListPresentFlag[i]) { if (i < 6) { if (i == 0 || i == 3) memcpy (pCtx->pPps->iScalingList4x4[i], pCtx->pSps->iScalingList4x4[i], 16 * sizeof (uint8_t)); else memcpy (pCtx->pPps->iScalingList4x4[i], pCtx->pPps->iScalingList4x4[i - 1], 16 * sizeof (uint8_t)); } else { if (i == 6 || i == 7) memcpy (pCtx->pPps->iScalingList8x8[ i - 6 ], pCtx->pSps->iScalingList8x8[ i - 6 ], 64 * sizeof (uint8_t)); else memcpy (pCtx->pPps->iScalingList8x8[ i - 6 ], pCtx->pPps->iScalingList8x8[i - 8], 64 * sizeof (uint8_t)); } } } } //Init dequant coeff value for different QP for (i = 0; i < 6; i++) { pCtx->pDequant_coeff4x4[i] = pCtx->pDequant_coeff_buffer4x4[i]; pCtx->pDequant_coeff8x8[i] = pCtx->pDequant_coeff_buffer8x8[i]; for (q = 0; q < 51; q++) { for (x = 0; x < 16; x++) { pCtx->pDequant_coeff4x4[i][q][x] = pCtx->pPps->bPicScalingMatrixPresentFlag ? pCtx->pPps->iScalingList4x4[i][x] * g_kuiDequantCoeff[q][x & 0x07] : pCtx->pSps->iScalingList4x4[i][x] * g_kuiDequantCoeff[q][x & 0x07]; } for (y = 0; y < 64; y++) { pCtx->pDequant_coeff8x8[i][q][y] = pCtx->pPps->bPicScalingMatrixPresentFlag ? pCtx->pPps->iScalingList8x8[i][y] * g_kuiMatrixV[q % 6][y / 8][y % 8] : pCtx->pSps->iScalingList8x8[i][y] * g_kuiMatrixV[q % 6][y / 8][y % 8]; } } } pCtx->bDequantCoeff4x4Init = true; pCtx->iDequantCoeffPpsid = pCtx->pPps->iPpsId; } } else pCtx->bUseScalingList = false; return ERR_NONE; } int32_t WelsDecodeSlice (PWelsDecoderContext pCtx, bool bFirstSliceInLayer, PNalUnit pNalCur) { PDqLayer pCurLayer = pCtx->pCurDqLayer; PFmo pFmo = pCtx->pFmo; int32_t iRet; int32_t iNextMbXyIndex, iSliceIdc; PSlice pSlice = &pCurLayer->sLayerInfo.sSliceInLayer; PSliceHeaderExt pSliceHeaderExt = &pSlice->sSliceHeaderExt; PSliceHeader pSliceHeader = &pSliceHeaderExt->sSliceHeader; int32_t iMbX, iMbY; const int32_t kiCountNumMb = pSliceHeader->pSps->uiTotalMbCount; //need to be correct when fmo or multi slice uint32_t uiEosFlag = 0; PWelsDecMbFunc pDecMbFunc; pSlice->iTotalMbInCurSlice = 0; //initialize at the starting of slice decoding. if (pCtx->pPps->bEntropyCodingModeFlag) { if (pSlice->sSliceHeaderExt.bAdaptiveMotionPredFlag || pSlice->sSliceHeaderExt.bAdaptiveBaseModeFlag || pSlice->sSliceHeaderExt.bAdaptiveResidualPredFlag) { WelsLog (& (pCtx->sLogCtx), WELS_LOG_ERROR, "WelsDecodeSlice()::::ILP flag exist, not supported with CABAC enabled!"); pCtx->iErrorCode |= dsBitstreamError; return dsBitstreamError; } if (P_SLICE == pSliceHeader->eSliceType) pDecMbFunc = WelsDecodeMbCabacPSlice; else //I_SLICE. B_SLICE not supported now pDecMbFunc = WelsDecodeMbCabacISlice; } else { if (P_SLICE == pSliceHeader->eSliceType) { pDecMbFunc = WelsDecodeMbCavlcPSlice; } else { //I_SLICE pDecMbFunc = WelsDecodeMbCavlcISlice; } } if (pSliceHeader->pPps->bConstainedIntraPredFlag) { pCtx->pFillInfoCacheIntraNxNFunc = WelsFillCacheConstrain1IntraNxN; pCtx->pMapNxNNeighToSampleFunc = WelsMapNxNNeighToSampleConstrain1; pCtx->pMap16x16NeighToSampleFunc = WelsMap16x16NeighToSampleConstrain1; } else { pCtx->pFillInfoCacheIntraNxNFunc = WelsFillCacheConstrain0IntraNxN; pCtx->pMapNxNNeighToSampleFunc = WelsMapNxNNeighToSampleNormal; pCtx->pMap16x16NeighToSampleFunc = WelsMap16x16NeighToSampleNormal; } pCtx->eSliceType = pSliceHeader->eSliceType; if (pCurLayer->sLayerInfo.pPps->bEntropyCodingModeFlag == 1) { int32_t iQp = pSlice->sSliceHeaderExt.sSliceHeader.iSliceQp; int32_t iCabacInitIdc = pSlice->sSliceHeaderExt.sSliceHeader.iCabacInitIdc; WelsCabacContextInit (pCtx, pSlice->eSliceType, iCabacInitIdc, iQp); //InitCabacCtx (pCtx->pCabacCtx, pSlice->eSliceType, iCabacInitIdc, iQp); pSlice->iLastDeltaQp = 0; WELS_READ_VERIFY (InitCabacDecEngineFromBS (pCtx->pCabacDecEngine, pCtx->pCurDqLayer->pBitStringAux)); } //try to calculate the dequant_coeff WelsCalcDeqCoeffScalingList (pCtx); iNextMbXyIndex = pSliceHeader->iFirstMbInSlice; iMbX = iNextMbXyIndex % pCurLayer->iMbWidth; iMbY = iNextMbXyIndex / pCurLayer->iMbWidth; // error is introduced by multiple slices case, 11/23/2009 pSlice->iMbSkipRun = -1; iSliceIdc = (pSliceHeader->iFirstMbInSlice << 7) + pCurLayer->uiLayerDqId; pCurLayer->iMbX = iMbX; pCurLayer->iMbY = iMbY; pCurLayer->iMbXyIndex = iNextMbXyIndex; do { if ((-1 == iNextMbXyIndex) || (iNextMbXyIndex >= kiCountNumMb)) { // slice group boundary or end of a frame break; } pCurLayer->pSliceIdc[iNextMbXyIndex] = iSliceIdc; pCtx->bMbRefConcealed = false; iRet = pDecMbFunc (pCtx, pNalCur, uiEosFlag); pCurLayer->pMbRefConcealedFlag[iNextMbXyIndex] = pCtx->bMbRefConcealed; if (iRet != ERR_NONE) { return iRet; } ++pSlice->iTotalMbInCurSlice; if (uiEosFlag) { //end of slice break; } if (pSliceHeader->pPps->uiNumSliceGroups > 1) { iNextMbXyIndex = FmoNextMb (pFmo, iNextMbXyIndex); } else { ++iNextMbXyIndex; } iMbX = iNextMbXyIndex % pCurLayer->iMbWidth; iMbY = iNextMbXyIndex / pCurLayer->iMbWidth; pCurLayer->iMbX = iMbX; pCurLayer->iMbY = iMbY; pCurLayer->iMbXyIndex = iNextMbXyIndex; } while (1); return ERR_NONE; } int32_t WelsActualDecodeMbCavlcISlice (PWelsDecoderContext pCtx) { SVlcTable* pVlcTable = &pCtx->sVlcTable; PDqLayer pCurLayer = pCtx->pCurDqLayer; PBitStringAux pBs = pCurLayer->pBitStringAux; PSlice pSlice = &pCurLayer->sLayerInfo.sSliceInLayer; PSliceHeader pSliceHeader = &pSlice->sSliceHeaderExt.sSliceHeader; SWelsNeighAvail sNeighAvail; int32_t iMbResProperty; int32_t iScanIdxStart = pSlice->sSliceHeaderExt.uiScanIdxStart; int32_t iScanIdxEnd = pSlice->sSliceHeaderExt.uiScanIdxEnd; int32_t iMbX = pCurLayer->iMbX; int32_t iMbY = pCurLayer->iMbY; const int32_t iMbXy = pCurLayer->iMbXyIndex; int8_t* pNzc = pCurLayer->pNzc[iMbXy]; int32_t i; uint32_t uiMbType = 0, uiCbp = 0, uiCbpL = 0, uiCbpC = 0; uint32_t uiCode; int32_t iCode; ENFORCE_STACK_ALIGN_1D (uint8_t, pNonZeroCount, 48, 16); GetNeighborAvailMbType (&sNeighAvail, pCurLayer); pCurLayer->pInterPredictionDoneFlag[iMbXy] = 0; pCurLayer->pResidualPredFlag[iMbXy] = pSlice->sSliceHeaderExt.bDefaultResidualPredFlag; pCurLayer->pNoSubMbPartSizeLessThan8x8Flag[iMbXy] = true; pCurLayer->pTransformSize8x8Flag[iMbXy] = false; WELS_READ_VERIFY (BsGetUe (pBs, &uiCode)); //uiMbType uiMbType = uiCode; if (uiMbType > 25) return ERR_INFO_INVALID_MB_TYPE; if (!pCtx->pSps->uiChromaFormatIdc && ((uiMbType >= 5 && uiMbType <= 12) || (uiMbType >= 17 && uiMbType <= 24))) return ERR_INFO_INVALID_MB_TYPE; if (25 == uiMbType) { int32_t iDecStrideL = pCurLayer->pDec->iLinesize[0]; int32_t iDecStrideC = pCurLayer->pDec->iLinesize[1]; int32_t iOffsetL = (iMbX + iMbY * iDecStrideL) << 4; int32_t iOffsetC = (iMbX + iMbY * iDecStrideC) << 3; uint8_t* pDecY = pCurLayer->pDec->pData[0] + iOffsetL; uint8_t* pDecU = pCurLayer->pDec->pData[1] + iOffsetC; uint8_t* pDecV = pCurLayer->pDec->pData[2] + iOffsetC; uint8_t* pTmpBsBuf; int32_t i; int32_t iCopySizeY = (sizeof (uint8_t) << 4); int32_t iCopySizeUV = (sizeof (uint8_t) << 3); int32_t iIndex = ((-pBs->iLeftBits) >> 3) + 2; pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA_PCM; //step 1: locating bit-stream pointer [must align into integer byte] pBs->pCurBuf -= iIndex; //step 2: copy pixel from bit-stream into fdec [reconstruction] pTmpBsBuf = pBs->pCurBuf; for (i = 0; i < 16; i++) { //luma memcpy (pDecY , pTmpBsBuf, iCopySizeY); pDecY += iDecStrideL; pTmpBsBuf += 16; } for (i = 0; i < 8; i++) { //cb memcpy (pDecU, pTmpBsBuf, iCopySizeUV); pDecU += iDecStrideC; pTmpBsBuf += 8; } for (i = 0; i < 8; i++) { //cr memcpy (pDecV, pTmpBsBuf, iCopySizeUV); pDecV += iDecStrideC; pTmpBsBuf += 8; } pBs->pCurBuf += 384; //step 3: update QP and pNonZeroCount pCurLayer->pLumaQp[iMbXy] = 0; memset (pCurLayer->pChromaQp[iMbXy], 0, sizeof (pCurLayer->pChromaQp[iMbXy])); memset (pNzc, 16, sizeof (pCurLayer->pNzc[iMbXy])); //Rec. 9.2.1 for PCM, nzc=16 WELS_READ_VERIFY (InitReadBits (pBs, 0)); return 0; } else if (0 == uiMbType) { //reference to JM ENFORCE_STACK_ALIGN_1D (int8_t, pIntraPredMode, 48, 16); pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA4x4; if (pCtx->pPps->bTransform8x8ModeFlag) { WELS_READ_VERIFY (BsGetOneBit (pBs, &uiCode)); //transform_size_8x8_flag pCurLayer->pTransformSize8x8Flag[iMbXy] = !!uiCode; if (pCurLayer->pTransformSize8x8Flag[iMbXy]) { uiMbType = pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA8x8; } } if (!pCurLayer->pTransformSize8x8Flag[iMbXy]) { pCtx->pFillInfoCacheIntraNxNFunc (&sNeighAvail, pNonZeroCount, pIntraPredMode, pCurLayer); WELS_READ_VERIFY (ParseIntra4x4Mode (pCtx, &sNeighAvail, pIntraPredMode, pBs, pCurLayer)); } else { pCtx->pFillInfoCacheIntraNxNFunc (&sNeighAvail, pNonZeroCount, pIntraPredMode, pCurLayer); WELS_READ_VERIFY (ParseIntra8x8Mode (pCtx, &sNeighAvail, pIntraPredMode, pBs, pCurLayer)); } //uiCbp WELS_READ_VERIFY (BsGetUe (pBs, &uiCode)); //coded_block_pattern uiCbp = uiCode; //G.9.1 Alternative parsing process for coded pBlock pattern if (pCtx->pSps->uiChromaFormatIdc && (uiCbp > 47)) return ERR_INFO_INVALID_CBP; if (!pCtx->pSps->uiChromaFormatIdc && (uiCbp > 15)) return ERR_INFO_INVALID_CBP; if (pCtx->pSps->uiChromaFormatIdc) uiCbp = g_kuiIntra4x4CbpTable[uiCbp]; else uiCbp = g_kuiIntra4x4CbpTable400[uiCbp]; pCurLayer->pCbp[iMbXy] = uiCbp; uiCbpC = uiCbp >> 4; uiCbpL = uiCbp & 15; } else { //I_PCM exclude, we can ignore it pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA16x16; pCurLayer->pTransformSize8x8Flag[iMbXy] = false; pCurLayer->pNoSubMbPartSizeLessThan8x8Flag[iMbXy] = true; pCurLayer->pIntraPredMode[iMbXy][7] = (uiMbType - 1) & 3; pCurLayer->pCbp[iMbXy] = g_kuiI16CbpTable[ (uiMbType - 1) >> 2]; uiCbpC = pCtx->pSps->uiChromaFormatIdc ? pCurLayer->pCbp[iMbXy] >> 4 : 0; uiCbpL = pCurLayer->pCbp[iMbXy] & 15; WelsFillCacheNonZeroCount (&sNeighAvail, pNonZeroCount, pCurLayer); WELS_READ_VERIFY (ParseIntra16x16Mode (pCtx, &sNeighAvail, pBs, pCurLayer)); } ST32A4 (&pNzc[0], 0); ST32A4 (&pNzc[4], 0); ST32A4 (&pNzc[8], 0); ST32A4 (&pNzc[12], 0); ST32A4 (&pNzc[16], 0); ST32A4 (&pNzc[20], 0); if (pCurLayer->pCbp[iMbXy] == 0 && IS_INTRA4x4 (pCurLayer->pMbType[iMbXy])) { pCurLayer->pLumaQp[iMbXy] = pSlice->iLastMbQp; for (i = 0; i < 2; i++) { pCurLayer->pChromaQp[iMbXy][i] = g_kuiChromaQpTable[WELS_CLIP3 (pCurLayer->pLumaQp[iMbXy] + pSliceHeader->pPps->iChromaQpIndexOffset[i], 0, 51)]; } } if (pCurLayer->pCbp[iMbXy] || MB_TYPE_INTRA16x16 == pCurLayer->pMbType[iMbXy]) { memset (pCurLayer->pScaledTCoeff[iMbXy], 0, 384 * sizeof (pCurLayer->pScaledTCoeff[iMbXy][0])); int32_t iQpDelta, iId8x8, iId4x4; WELS_READ_VERIFY (BsGetSe (pBs, &iCode)); //mb_qp_delta iQpDelta = iCode; if (iQpDelta > 25 || iQpDelta < -26) { //out of iQpDelta range return ERR_INFO_INVALID_QP; } pCurLayer->pLumaQp[iMbXy] = (pSlice->iLastMbQp + iQpDelta + 52) % 52; //update last_mb_qp pSlice->iLastMbQp = pCurLayer->pLumaQp[iMbXy]; for (i = 0; i < 2; i++) { pCurLayer->pChromaQp[iMbXy][i] = g_kuiChromaQpTable[WELS_CLIP3 (pSlice->iLastMbQp + pSliceHeader->pPps->iChromaQpIndexOffset[i], 0, 51)]; } BsStartCavlc (pBs); if (MB_TYPE_INTRA16x16 == pCurLayer->pMbType[iMbXy]) { //step1: Luma DC if (WelsResidualBlockCavlc (pVlcTable, pNonZeroCount, pBs, 0, 16, g_kuiLumaDcZigzagScan, I16_LUMA_DC, pCurLayer->pScaledTCoeff[iMbXy], pCurLayer->pLumaQp[iMbXy], pCtx)) { return -1;//abnormal } //step2: Luma AC if (uiCbpL) { for (i = 0; i < 16; i++) { if (WelsResidualBlockCavlc (pVlcTable, pNonZeroCount, pBs, i, iScanIdxEnd - WELS_MAX (iScanIdxStart, 1) + 1, g_kuiZigzagScan + WELS_MAX (iScanIdxStart, 1), I16_LUMA_AC, pCurLayer->pScaledTCoeff[iMbXy] + (i << 4), pCurLayer->pLumaQp[iMbXy], pCtx)) { return -1;//abnormal } } ST32A4 (&pNzc[0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32A4 (&pNzc[4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32A4 (&pNzc[8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32A4 (&pNzc[12], LD32 (&pNonZeroCount[1 + 8 * 4])); } } else { //non-MB_TYPE_INTRA16x16 if (pCurLayer->pTransformSize8x8Flag[iMbXy]) { for (iId8x8 = 0; iId8x8 < 4; iId8x8++) { iMbResProperty = (IS_INTRA (pCurLayer->pMbType[iMbXy])) ? LUMA_DC_AC_INTRA_8 : LUMA_DC_AC_INTER_8; if (uiCbpL & (1 << iId8x8)) { int32_t iIndex = (iId8x8 << 2); for (iId4x4 = 0; iId4x4 < 4; iId4x4++) { if (WelsResidualBlockCavlc8x8 (pVlcTable, pNonZeroCount, pBs, iIndex, iScanIdxEnd - iScanIdxStart + 1, g_kuiZigzagScan8x8 + iScanIdxStart, iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + (iId8x8 << 6), iId4x4, pCurLayer->pLumaQp[iMbXy], pCtx)) { return -1; } iIndex++; } } else { ST16 (&pNonZeroCount[g_kuiCache48CountScan4Idx[iId8x8 << 2]], 0); ST16 (&pNonZeroCount[g_kuiCache48CountScan4Idx[ (iId8x8 << 2) + 2]], 0); } } ST32A4 (&pNzc[0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32A4 (&pNzc[4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32A4 (&pNzc[8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32A4 (&pNzc[12], LD32 (&pNonZeroCount[1 + 8 * 4])); } else { for (iId8x8 = 0; iId8x8 < 4; iId8x8++) { if (uiCbpL & (1 << iId8x8)) { int32_t iIndex = (iId8x8 << 2); for (iId4x4 = 0; iId4x4 < 4; iId4x4++) { //Luma (DC and AC decoding together) if (WelsResidualBlockCavlc (pVlcTable, pNonZeroCount, pBs, iIndex, iScanIdxEnd - iScanIdxStart + 1, g_kuiZigzagScan + iScanIdxStart, LUMA_DC_AC_INTRA, pCurLayer->pScaledTCoeff[iMbXy] + (iIndex << 4), pCurLayer->pLumaQp[iMbXy], pCtx)) { return -1;//abnormal } iIndex++; } } else { ST16 (&pNonZeroCount[g_kuiCache48CountScan4Idx[ (iId8x8 << 2)]], 0); ST16 (&pNonZeroCount[g_kuiCache48CountScan4Idx[ (iId8x8 << 2) + 2]], 0); } } ST32A4 (&pNzc[0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32A4 (&pNzc[4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32A4 (&pNzc[8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32A4 (&pNzc[12], LD32 (&pNonZeroCount[1 + 8 * 4])); } } //chroma //step1: DC if (1 == uiCbpC || 2 == uiCbpC) { for (i = 0; i < 2; i++) { //Cb Cr iMbResProperty = i ? CHROMA_DC_V : CHROMA_DC_U; if (WelsResidualBlockCavlc (pVlcTable, pNonZeroCount, pBs, 16 + (i << 2), 4, g_kuiChromaDcScan, iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + 256 + (i << 6), pCurLayer->pChromaQp[iMbXy][i], pCtx)) { return -1;//abnormal } } } //step2: AC if (2 == uiCbpC) { for (i = 0; i < 2; i++) { //Cb Cr iMbResProperty = i ? CHROMA_AC_V : CHROMA_AC_U; int32_t iIndex = 16 + (i << 2); for (iId4x4 = 0; iId4x4 < 4; iId4x4++) { if (WelsResidualBlockCavlc (pVlcTable, pNonZeroCount, pBs, iIndex, iScanIdxEnd - WELS_MAX (iScanIdxStart, 1) + 1, g_kuiZigzagScan + WELS_MAX (iScanIdxStart, 1), iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + (iIndex << 4), pCurLayer->pChromaQp[iMbXy][i], pCtx)) { return -1;//abnormal } iIndex++; } } ST16A2 (&pNzc[16], LD16A2 (&pNonZeroCount[6 + 8 * 1])); ST16A2 (&pNzc[20], LD16A2 (&pNonZeroCount[6 + 8 * 2])); ST16A2 (&pNzc[18], LD16A2 (&pNonZeroCount[6 + 8 * 4])); ST16A2 (&pNzc[22], LD16A2 (&pNonZeroCount[6 + 8 * 5])); } BsEndCavlc (pBs); } return 0; } int32_t WelsDecodeMbCavlcISlice (PWelsDecoderContext pCtx, PNalUnit pNalCur, uint32_t& uiEosFlag) { PDqLayer pCurLayer = pCtx->pCurDqLayer; PBitStringAux pBs = pCurLayer->pBitStringAux; PSliceHeaderExt pSliceHeaderExt = &pCurLayer->sLayerInfo.sSliceInLayer.sSliceHeaderExt; int32_t iBaseModeFlag; int32_t iRet = 0; //should have the return value to indicate decoding error or not, It's NECESSARY--2010.4.15 uint32_t uiCode; intX_t iUsedBits; if (pSliceHeaderExt->bAdaptiveBaseModeFlag == 1) { WELS_READ_VERIFY (BsGetOneBit (pBs, &uiCode)); //base_mode_flag iBaseModeFlag = uiCode; } else { iBaseModeFlag = pSliceHeaderExt->bDefaultBaseModeFlag; } if (!iBaseModeFlag) { iRet = WelsActualDecodeMbCavlcISlice (pCtx); } else { WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING, "iBaseModeFlag (%d) != 0, inter-layer prediction not supported.", iBaseModeFlag); return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_UNSUPPORTED_ILP); } if (iRet) { //occur error when parsing, MUST STOP decoding return iRet; } // check whether there is left bits to read next time in case multiple slices iUsedBits = ((pBs->pCurBuf - pBs->pStartBuf) << 3) - (16 - pBs->iLeftBits); // sub 1, for stop bit if ((iUsedBits == (pBs->iBits - 1)) && (0 >= pCurLayer->sLayerInfo.sSliceInLayer.iMbSkipRun)) { // slice boundary uiEosFlag = 1; } if (iUsedBits > (pBs->iBits - 1)) { //When BS incomplete, as long as find it, SHOULD stop decoding to avoid mosaic or crash. WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING, "WelsDecodeMbCavlcISlice()::::pBs incomplete, iUsedBits:%" PRId64 " > pBs->iBits:%d, MUST stop decoding.", (int64_t) iUsedBits, pBs->iBits); return -1; } return 0; } int32_t WelsActualDecodeMbCavlcPSlice (PWelsDecoderContext pCtx) { SVlcTable* pVlcTable = &pCtx->sVlcTable; PDqLayer pCurLayer = pCtx->pCurDqLayer; PBitStringAux pBs = pCurLayer->pBitStringAux; PSlice pSlice = &pCurLayer->sLayerInfo.sSliceInLayer; PSliceHeader pSliceHeader = &pSlice->sSliceHeaderExt.sSliceHeader; int32_t iScanIdxStart = pSlice->sSliceHeaderExt.uiScanIdxStart; int32_t iScanIdxEnd = pSlice->sSliceHeaderExt.uiScanIdxEnd; SWelsNeighAvail sNeighAvail; int32_t iMbX = pCurLayer->iMbX; int32_t iMbY = pCurLayer->iMbY; const int32_t iMbXy = pCurLayer->iMbXyIndex; int8_t* pNzc = pCurLayer->pNzc[iMbXy]; int32_t i; uint32_t uiMbType = 0, uiCbp = 0, uiCbpL = 0, uiCbpC = 0; uint32_t uiCode; int32_t iCode; int32_t iMbResProperty; GetNeighborAvailMbType (&sNeighAvail, pCurLayer); ENFORCE_STACK_ALIGN_1D (uint8_t, pNonZeroCount, 48, 16); pCurLayer->pInterPredictionDoneFlag[iMbXy] = 0;//2009.10.23 WELS_READ_VERIFY (BsGetUe (pBs, &uiCode)); //uiMbType uiMbType = uiCode; if (uiMbType < 5) { //inter MB type int16_t iMotionVector[LIST_A][30][MV_A]; int8_t iRefIndex[LIST_A][30]; pCurLayer->pMbType[iMbXy] = g_ksInterMbTypeInfo[uiMbType].iType; WelsFillCacheInter (&sNeighAvail, pNonZeroCount, iMotionVector, iRefIndex, pCurLayer); if (ParseInterInfo (pCtx, iMotionVector, iRefIndex, pBs)) { return -1;//abnormal } if (pSlice->sSliceHeaderExt.bAdaptiveResidualPredFlag == 1) { WELS_READ_VERIFY (BsGetOneBit (pBs, &uiCode)); //residual_prediction_flag pCurLayer->pResidualPredFlag[iMbXy] = uiCode; } else { pCurLayer->pResidualPredFlag[iMbXy] = pSlice->sSliceHeaderExt.bDefaultResidualPredFlag; } if (pCurLayer->pResidualPredFlag[iMbXy] == 0) { pCurLayer->pInterPredictionDoneFlag[iMbXy] = 0; } else { WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING, "residual_pred_flag = 1 not supported."); return -1; } } else { //intra MB type uiMbType -= 5; if (uiMbType > 25) return ERR_INFO_INVALID_MB_TYPE; if (!pCtx->pSps->uiChromaFormatIdc && ((uiMbType >= 5 && uiMbType <= 12) || (uiMbType >= 17 && uiMbType <= 24))) return ERR_INFO_INVALID_MB_TYPE; if (25 == uiMbType) { int32_t iDecStrideL = pCurLayer->pDec->iLinesize[0]; int32_t iDecStrideC = pCurLayer->pDec->iLinesize[1]; int32_t iOffsetL = (iMbX + iMbY * iDecStrideL) << 4; int32_t iOffsetC = (iMbX + iMbY * iDecStrideC) << 3; uint8_t* pDecY = pCurLayer->pDec->pData[0] + iOffsetL; uint8_t* pDecU = pCurLayer->pDec->pData[1] + iOffsetC; uint8_t* pDecV = pCurLayer->pDec->pData[2] + iOffsetC; uint8_t* pTmpBsBuf; int32_t i; int32_t iCopySizeY = (sizeof (uint8_t) << 4); int32_t iCopySizeUV = (sizeof (uint8_t) << 3); int32_t iIndex = ((-pBs->iLeftBits) >> 3) + 2; pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA_PCM; //step 1: locating bit-stream pointer [must align into integer byte] pBs->pCurBuf -= iIndex; //step 2: copy pixel from bit-stream into fdec [reconstruction] pTmpBsBuf = pBs->pCurBuf; for (i = 0; i < 16; i++) { //luma memcpy (pDecY , pTmpBsBuf, iCopySizeY); pDecY += iDecStrideL; pTmpBsBuf += 16; } for (i = 0; i < 8; i++) { //cb memcpy (pDecU, pTmpBsBuf, iCopySizeUV); pDecU += iDecStrideC; pTmpBsBuf += 8; } for (i = 0; i < 8; i++) { //cr memcpy (pDecV, pTmpBsBuf, iCopySizeUV); pDecV += iDecStrideC; pTmpBsBuf += 8; } pBs->pCurBuf += 384; //step 3: update QP and pNonZeroCount pCurLayer->pLumaQp[iMbXy] = 0; pCurLayer->pChromaQp[iMbXy][0] = pCurLayer->pChromaQp[iMbXy][1] = 0; //Rec. 9.2.1 for PCM, nzc=16 ST32A4 (&pNzc[0], 0x10101010); ST32A4 (&pNzc[4], 0x10101010); ST32A4 (&pNzc[8], 0x10101010); ST32A4 (&pNzc[12], 0x10101010); ST32A4 (&pNzc[16], 0x10101010); ST32A4 (&pNzc[20], 0x10101010); WELS_READ_VERIFY (InitReadBits (pBs, 0)); return 0; } else { if (0 == uiMbType) { ENFORCE_STACK_ALIGN_1D (int8_t, pIntraPredMode, 48, 16); pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA4x4; if (pCtx->pPps->bTransform8x8ModeFlag) { WELS_READ_VERIFY (BsGetOneBit (pBs, &uiCode)); //transform_size_8x8_flag pCurLayer->pTransformSize8x8Flag[iMbXy] = !!uiCode; if (pCurLayer->pTransformSize8x8Flag[iMbXy]) { uiMbType = pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA8x8; } } if (!pCurLayer->pTransformSize8x8Flag[iMbXy]) { pCtx->pFillInfoCacheIntraNxNFunc (&sNeighAvail, pNonZeroCount, pIntraPredMode, pCurLayer); WELS_READ_VERIFY (ParseIntra4x4Mode (pCtx, &sNeighAvail, pIntraPredMode, pBs, pCurLayer)); } else { pCtx->pFillInfoCacheIntraNxNFunc (&sNeighAvail, pNonZeroCount, pIntraPredMode, pCurLayer); WELS_READ_VERIFY (ParseIntra8x8Mode (pCtx, &sNeighAvail, pIntraPredMode, pBs, pCurLayer)); } } else { //I_PCM exclude, we can ignore it pCurLayer->pMbType[iMbXy] = MB_TYPE_INTRA16x16; pCurLayer->pTransformSize8x8Flag[iMbXy] = false; pCurLayer->pNoSubMbPartSizeLessThan8x8Flag[iMbXy] = true; pCurLayer->pIntraPredMode[iMbXy][7] = (uiMbType - 1) & 3; pCurLayer->pCbp[iMbXy] = g_kuiI16CbpTable[ (uiMbType - 1) >> 2]; uiCbpC = pCtx->pSps->uiChromaFormatIdc ? pCurLayer->pCbp[iMbXy] >> 4 : 0; uiCbpL = pCurLayer->pCbp[iMbXy] & 15; WelsFillCacheNonZeroCount (&sNeighAvail, pNonZeroCount, pCurLayer); if (ParseIntra16x16Mode (pCtx, &sNeighAvail, pBs, pCurLayer)) { return -1; } } } } if (MB_TYPE_INTRA16x16 != pCurLayer->pMbType[iMbXy]) { WELS_READ_VERIFY (BsGetUe (pBs, &uiCode)); //coded_block_pattern uiCbp = uiCode; { if (pCtx->pSps->uiChromaFormatIdc && (uiCbp > 47)) return ERR_INFO_INVALID_CBP; if (!pCtx->pSps->uiChromaFormatIdc && (uiCbp > 15)) return ERR_INFO_INVALID_CBP; if (MB_TYPE_INTRA4x4 == pCurLayer->pMbType[iMbXy] || MB_TYPE_INTRA8x8 == pCurLayer->pMbType[iMbXy]) { uiCbp = pCtx->pSps->uiChromaFormatIdc ? g_kuiIntra4x4CbpTable[uiCbp] : g_kuiIntra4x4CbpTable400[uiCbp]; } else //inter uiCbp = pCtx->pSps->uiChromaFormatIdc ? g_kuiInterCbpTable[uiCbp] : g_kuiInterCbpTable400[uiCbp]; } pCurLayer->pCbp[iMbXy] = uiCbp; uiCbpC = pCurLayer->pCbp[iMbXy] >> 4; uiCbpL = pCurLayer->pCbp[iMbXy] & 15; // Need modification when B picutre add in bool bNeedParseTransformSize8x8Flag = (((pCurLayer->pMbType[iMbXy] >= MB_TYPE_16x16 && pCurLayer->pMbType[iMbXy] <= MB_TYPE_8x16) || pCurLayer->pNoSubMbPartSizeLessThan8x8Flag[iMbXy]) && (pCurLayer->pMbType[iMbXy] != MB_TYPE_INTRA8x8) && (pCurLayer->pMbType[iMbXy] != MB_TYPE_INTRA4x4) && (uiCbpL > 0) && (pCtx->pPps->bTransform8x8ModeFlag)); if (bNeedParseTransformSize8x8Flag) { WELS_READ_VERIFY (BsGetOneBit (pBs, &uiCode)); //transform_size_8x8_flag pCurLayer->pTransformSize8x8Flag[iMbXy] = !!uiCode; } } ST32A4 (&pNzc[0], 0); ST32A4 (&pNzc[4], 0); ST32A4 (&pNzc[8], 0); ST32A4 (&pNzc[12], 0); ST32A4 (&pNzc[16], 0); ST32A4 (&pNzc[20], 0); if (pCurLayer->pCbp[iMbXy] == 0 && !IS_INTRA16x16 (pCurLayer->pMbType[iMbXy]) && !IS_I_BL (pCurLayer->pMbType[iMbXy])) { pCurLayer->pLumaQp[iMbXy] = pSlice->iLastMbQp; for (i = 0; i < 2; i++) { pCurLayer->pChromaQp[iMbXy][i] = g_kuiChromaQpTable[WELS_CLIP3 (pCurLayer->pLumaQp[iMbXy] + pSliceHeader->pPps->iChromaQpIndexOffset[i], 0, 51)]; } } if (pCurLayer->pCbp[iMbXy] || MB_TYPE_INTRA16x16 == pCurLayer->pMbType[iMbXy]) { int32_t iQpDelta, iId8x8, iId4x4; memset (pCurLayer->pScaledTCoeff[iMbXy], 0, MB_COEFF_LIST_SIZE * sizeof (int16_t)); WELS_READ_VERIFY (BsGetSe (pBs, &iCode)); //mb_qp_delta iQpDelta = iCode; if (iQpDelta > 25 || iQpDelta < -26) { //out of iQpDelta range return ERR_INFO_INVALID_QP; } pCurLayer->pLumaQp[iMbXy] = (pSlice->iLastMbQp + iQpDelta + 52) % 52; //update last_mb_qp pSlice->iLastMbQp = pCurLayer->pLumaQp[iMbXy]; for (i = 0; i < 2; i++) { pCurLayer->pChromaQp[iMbXy][i] = g_kuiChromaQpTable[WELS_CLIP3 (pSlice->iLastMbQp + pSliceHeader->pPps->iChromaQpIndexOffset[i], 0, 51)]; } BsStartCavlc (pBs); if (MB_TYPE_INTRA16x16 == pCurLayer->pMbType[iMbXy]) { //step1: Luma DC if (WelsResidualBlockCavlc (pVlcTable, pNonZeroCount, pBs, 0, 16, g_kuiLumaDcZigzagScan, I16_LUMA_DC, pCurLayer->pScaledTCoeff[iMbXy], pCurLayer->pLumaQp[iMbXy], pCtx)) { return -1;//abnormal } //step2: Luma AC if (uiCbpL) { for (i = 0; i < 16; i++) { if (WelsResidualBlockCavlc (pVlcTable, pNonZeroCount, pBs, i, iScanIdxEnd - WELS_MAX (iScanIdxStart, 1) + 1, g_kuiZigzagScan + WELS_MAX (iScanIdxStart, 1), I16_LUMA_AC, pCurLayer->pScaledTCoeff[iMbXy] + (i << 4), pCurLayer->pLumaQp[iMbXy], pCtx)) { return -1;//abnormal } } ST32A4 (&pNzc[0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32A4 (&pNzc[4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32A4 (&pNzc[8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32A4 (&pNzc[12], LD32 (&pNonZeroCount[1 + 8 * 4])); } } else { //non-MB_TYPE_INTRA16x16 if (pCurLayer->pTransformSize8x8Flag[iMbXy]) { for (iId8x8 = 0; iId8x8 < 4; iId8x8++) { iMbResProperty = (IS_INTRA (pCurLayer->pMbType[iMbXy])) ? LUMA_DC_AC_INTRA_8 : LUMA_DC_AC_INTER_8; if (uiCbpL & (1 << iId8x8)) { int32_t iIndex = (iId8x8 << 2); for (iId4x4 = 0; iId4x4 < 4; iId4x4++) { if (WelsResidualBlockCavlc8x8 (pVlcTable, pNonZeroCount, pBs, iIndex, iScanIdxEnd - iScanIdxStart + 1, g_kuiZigzagScan8x8 + iScanIdxStart, iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + (iId8x8 << 6), iId4x4, pCurLayer->pLumaQp[iMbXy], pCtx)) { return -1; } iIndex++; } } else { ST16 (&pNonZeroCount[g_kuiCache48CountScan4Idx[iId8x8 << 2]], 0); ST16 (&pNonZeroCount[g_kuiCache48CountScan4Idx[ (iId8x8 << 2) + 2]], 0); } } ST32A4 (&pNzc[0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32A4 (&pNzc[4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32A4 (&pNzc[8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32A4 (&pNzc[12], LD32 (&pNonZeroCount[1 + 8 * 4])); } else { // Normal T4x4 for (iId8x8 = 0; iId8x8 < 4; iId8x8++) { iMbResProperty = (IS_INTRA (pCurLayer->pMbType[iMbXy])) ? LUMA_DC_AC_INTRA : LUMA_DC_AC_INTER; if (uiCbpL & (1 << iId8x8)) { int32_t iIndex = (iId8x8 << 2); for (iId4x4 = 0; iId4x4 < 4; iId4x4++) { //Luma (DC and AC decoding together) if (WelsResidualBlockCavlc (pVlcTable, pNonZeroCount, pBs, iIndex, iScanIdxEnd - iScanIdxStart + 1, g_kuiZigzagScan + iScanIdxStart, iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + (iIndex << 4), pCurLayer->pLumaQp[iMbXy], pCtx)) { return -1;//abnormal } iIndex++; } } else { ST16 (&pNonZeroCount[g_kuiCache48CountScan4Idx[iId8x8 << 2]], 0); ST16 (&pNonZeroCount[g_kuiCache48CountScan4Idx[ (iId8x8 << 2) + 2]], 0); } } ST32A4 (&pNzc[0], LD32 (&pNonZeroCount[1 + 8 * 1])); ST32A4 (&pNzc[4], LD32 (&pNonZeroCount[1 + 8 * 2])); ST32A4 (&pNzc[8], LD32 (&pNonZeroCount[1 + 8 * 3])); ST32A4 (&pNzc[12], LD32 (&pNonZeroCount[1 + 8 * 4])); } } //chroma //step1: DC if (1 == uiCbpC || 2 == uiCbpC) { for (i = 0; i < 2; i++) { //Cb Cr if (IS_INTRA (pCurLayer->pMbType[iMbXy])) iMbResProperty = i ? CHROMA_DC_V : CHROMA_DC_U; else iMbResProperty = i ? CHROMA_DC_V_INTER : CHROMA_DC_U_INTER; if (WelsResidualBlockCavlc (pVlcTable, pNonZeroCount, pBs, 16 + (i << 2), 4, g_kuiChromaDcScan, iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + 256 + (i << 6), pCurLayer->pChromaQp[iMbXy][i], pCtx)) { return -1;//abnormal } } } else { } //step2: AC if (2 == uiCbpC) { for (i = 0; i < 2; i++) { //Cb Cr if (IS_INTRA (pCurLayer->pMbType[iMbXy])) iMbResProperty = i ? CHROMA_AC_V : CHROMA_AC_U; else iMbResProperty = i ? CHROMA_AC_V_INTER : CHROMA_AC_U_INTER; int32_t iIndex = 16 + (i << 2); for (iId4x4 = 0; iId4x4 < 4; iId4x4++) { if (WelsResidualBlockCavlc (pVlcTable, pNonZeroCount, pBs, iIndex, iScanIdxEnd - WELS_MAX (iScanIdxStart, 1) + 1, g_kuiZigzagScan + WELS_MAX (iScanIdxStart, 1), iMbResProperty, pCurLayer->pScaledTCoeff[iMbXy] + (iIndex << 4), pCurLayer->pChromaQp[iMbXy][i], pCtx)) { return -1;//abnormal } iIndex++; } } ST16A2 (&pNzc[16], LD16A2 (&pNonZeroCount[6 + 8 * 1])); ST16A2 (&pNzc[20], LD16A2 (&pNonZeroCount[6 + 8 * 2])); ST16A2 (&pNzc[18], LD16A2 (&pNonZeroCount[6 + 8 * 4])); ST16A2 (&pNzc[22], LD16A2 (&pNonZeroCount[6 + 8 * 5])); } BsEndCavlc (pBs); } return 0; } int32_t WelsDecodeMbCavlcPSlice (PWelsDecoderContext pCtx, PNalUnit pNalCur, uint32_t& uiEosFlag) { PDqLayer pCurLayer = pCtx->pCurDqLayer; PBitStringAux pBs = pCurLayer->pBitStringAux; PSlice pSlice = &pCurLayer->sLayerInfo.sSliceInLayer; PSliceHeader pSliceHeader = &pSlice->sSliceHeaderExt.sSliceHeader; PPicture* ppRefPic = pCtx->sRefPic.pRefList[LIST_0]; intX_t iUsedBits; const int32_t iMbXy = pCurLayer->iMbXyIndex; int8_t* pNzc = pCurLayer->pNzc[iMbXy]; int32_t iBaseModeFlag, i; int32_t iRet = 0; //should have the return value to indicate decoding error or not, It's NECESSARY--2010.4.15 uint32_t uiCode; pCurLayer->pNoSubMbPartSizeLessThan8x8Flag[iMbXy] = true; pCurLayer->pTransformSize8x8Flag[iMbXy] = false; if (-1 == pSlice->iMbSkipRun) { WELS_READ_VERIFY (BsGetUe (pBs, &uiCode)); //mb_skip_run pSlice->iMbSkipRun = uiCode; if (-1 == pSlice->iMbSkipRun) { return -1; } } if (pSlice->iMbSkipRun--) { int16_t iMv[2]; pCurLayer->pMbType[iMbXy] = MB_TYPE_SKIP; ST32A4 (&pNzc[0], 0); ST32A4 (&pNzc[4], 0); ST32A4 (&pNzc[8], 0); ST32A4 (&pNzc[12], 0); ST32A4 (&pNzc[16], 0); ST32A4 (&pNzc[20], 0); pCurLayer->pInterPredictionDoneFlag[iMbXy] = 0; memset (pCurLayer->pRefIndex[0][iMbXy], 0, sizeof (int8_t) * 16); pCtx->bMbRefConcealed = pCtx->bRPLRError || pCtx->bMbRefConcealed || ! (ppRefPic[0] && ppRefPic[0]->bIsComplete); //predict iMv PredPSkipMvFromNeighbor (pCurLayer, iMv); for (i = 0; i < 16; i++) { ST32A2 (pCurLayer->pMv[0][iMbXy][i], * (uint32_t*)iMv); } //if (!pSlice->sSliceHeaderExt.bDefaultResidualPredFlag) { // memset (pCurLayer->pScaledTCoeff[iMbXy], 0, 384 * sizeof (int16_t)); //} //reset rS if (!pSlice->sSliceHeaderExt.bDefaultResidualPredFlag || (pNalCur->sNalHeaderExt.uiQualityId == 0 && pNalCur->sNalHeaderExt.uiDependencyId == 0)) { pCurLayer->pLumaQp[iMbXy] = pSlice->iLastMbQp; for (i = 0; i < 2; i++) { pCurLayer->pChromaQp[iMbXy][i] = g_kuiChromaQpTable[WELS_CLIP3 (pCurLayer->pLumaQp[iMbXy] + pSliceHeader->pPps->iChromaQpIndexOffset[i], 0, 51)]; } } pCurLayer->pCbp[iMbXy] = 0; } else { if (pSlice->sSliceHeaderExt.bAdaptiveBaseModeFlag == 1) { WELS_READ_VERIFY (BsGetOneBit (pBs, &uiCode)); //base_mode_flag iBaseModeFlag = uiCode; } else { iBaseModeFlag = pSlice->sSliceHeaderExt.bDefaultBaseModeFlag; } if (!iBaseModeFlag) { iRet = WelsActualDecodeMbCavlcPSlice (pCtx); } else { WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING, "iBaseModeFlag (%d) != 0, inter-layer prediction not supported.", iBaseModeFlag); return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_UNSUPPORTED_ILP); } if (iRet) { //occur error when parsing, MUST STOP decoding return iRet; } } // check whether there is left bits to read next time in case multiple slices iUsedBits = ((pBs->pCurBuf - pBs->pStartBuf) << 3) - (16 - pBs->iLeftBits); // sub 1, for stop bit if ((iUsedBits == (pBs->iBits - 1)) && (0 >= pCurLayer->sLayerInfo.sSliceInLayer.iMbSkipRun)) { // slice boundary uiEosFlag = 1; } if (iUsedBits > (pBs->iBits - 1)) { //When BS incomplete, as long as find it, SHOULD stop decoding to avoid mosaic or crash. WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING, "WelsDecodeMbCavlcISlice()::::pBs incomplete, iUsedBits:%" PRId64 " > pBs->iBits:%d, MUST stop decoding.", (int64_t) iUsedBits, pBs->iBits); return -1; } return 0; } void WelsBlockFuncInit (SBlockFunc* pFunc, int32_t iCpu) { pFunc->pWelsSetNonZeroCountFunc = WelsNonZeroCount_c; pFunc->pWelsBlockZero16x16Func = WelsBlockZero16x16_c; pFunc->pWelsBlockZero8x8Func = WelsBlockZero8x8_c; #ifdef HAVE_NEON if (iCpu & WELS_CPU_NEON) { pFunc->pWelsSetNonZeroCountFunc = WelsNonZeroCount_neon; pFunc->pWelsBlockZero16x16Func = WelsBlockZero16x16_neon; pFunc->pWelsBlockZero8x8Func = WelsBlockZero8x8_neon; } #endif #ifdef HAVE_NEON_AARCH64 if (iCpu & WELS_CPU_NEON) { pFunc->pWelsSetNonZeroCountFunc = WelsNonZeroCount_AArch64_neon; pFunc->pWelsBlockZero16x16Func = WelsBlockZero16x16_AArch64_neon; pFunc->pWelsBlockZero8x8Func = WelsBlockZero8x8_AArch64_neon; } #endif #if defined(X86_ASM) if (iCpu & WELS_CPU_SSE2) { pFunc->pWelsSetNonZeroCountFunc = WelsNonZeroCount_sse2; pFunc->pWelsBlockZero16x16Func = WelsBlockZero16x16_sse2; pFunc->pWelsBlockZero8x8Func = WelsBlockZero8x8_sse2; } #endif } void WelsBlockInit (int16_t* pBlock, int iW, int iH, int iStride, uint8_t uiVal) { int32_t i; int16_t* pDst = pBlock; for (i = 0; i < iH; i++) { memset (pDst, uiVal, iW * sizeof (int16_t)); pDst += iStride; } } void WelsBlockZero16x16_c (int16_t* pBlock, int32_t iStride) { WelsBlockInit (pBlock, 16, 16, iStride, 0); } void WelsBlockZero8x8_c (int16_t* pBlock, int32_t iStride) { WelsBlockInit (pBlock, 8, 8, iStride, 0); } } // namespace WelsDec