ref: 319552db485eda7e907f785540eda1a4cab50043
dir: /codec/encoder/core/src/ratectl.cpp/
/*! * \copy * Copyright (c) 2009-2013, 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. * * * ratectl.c * * Abstract * Rate Control * * History * 9/8/2009 Created * 12/26/2011 Modified * * * *************************************************************************/ #include "rc.h" #include "encoder_context.h" #include "utils.h" #include "svc_enc_golomb.h" namespace WelsEnc { const int32_t g_kiQpToQstepTable[52] = { 63, 71, 79, 89, 100, 112, 126, 141, 159, 178, 200, 224, 252, 283, 317, 356, 400, 449, 504, 566, 635, 713, 800, 898, 1008, 1131, 1270, 1425, 1600, 1796, 2016, 2263, 2540, 2851, 3200, 3592, 4032, 4525, 5080, 5702, 6400, 7184, 8063, 9051, 10159, 11404, 12800, 14368, 16127, 18102, 20319, 22807 }; //WELS_ROUND(INT_MULTIPLY*pow (2.0, (iQP - 4.0) / 6.0)) void RcInitLayerMemory (SWelsSvcRc* pWelsSvcRc, CMemoryAlign* pMA, const int32_t kiMaxTl) { const int32_t kiSliceNum = pWelsSvcRc->iSliceNum; const int32_t kiGomSize = pWelsSvcRc->iGomSize; const int32_t kiGomSizeD = kiGomSize * sizeof (double); const int32_t kiGomSizeI = kiGomSize * sizeof (int32_t); const int32_t kiLayerRcSize = kiGomSizeD + (kiGomSizeI * 3) + sizeof (SRCTemporal) * kiMaxTl; uint8_t* pBaseMem = (uint8_t*)pMA->WelsMalloc (kiLayerRcSize, "pWelsSvcRc->pTemporalOverRc"); if (NULL == pBaseMem) return; pWelsSvcRc->pTemporalOverRc = (SRCTemporal*)pBaseMem; pBaseMem += sizeof (SRCTemporal) * kiMaxTl; pWelsSvcRc->pGomComplexity = (double*)pBaseMem; pBaseMem += kiGomSizeD; pWelsSvcRc->pGomForegroundBlockNum = (int32_t*)pBaseMem; pBaseMem += kiGomSizeI; pWelsSvcRc->pCurrentFrameGomSad = (int32_t*)pBaseMem; pBaseMem += kiGomSizeI; pWelsSvcRc->pGomCost = (int32_t*)pBaseMem; pWelsSvcRc->pSlicingOverRc = (SRCSlicing*)pMA->WelsMalloc (sizeof (SRCSlicing) * kiSliceNum, "SlicingOverRC"); } void RcFreeLayerMemory (SWelsSvcRc* pWelsSvcRc, CMemoryAlign* pMA) { if (pWelsSvcRc != NULL && pWelsSvcRc->pSlicingOverRc != NULL) { pMA->WelsFree (pWelsSvcRc->pSlicingOverRc, "SlicingOverRC"); pWelsSvcRc->pSlicingOverRc = NULL; } if (pWelsSvcRc != NULL && pWelsSvcRc->pTemporalOverRc != NULL) { pMA->WelsFree (pWelsSvcRc->pTemporalOverRc, "pWelsSvcRc->pTemporalOverRc"); pWelsSvcRc->pTemporalOverRc = NULL; pWelsSvcRc->pGomComplexity = NULL; pWelsSvcRc->pGomForegroundBlockNum = NULL; pWelsSvcRc->pCurrentFrameGomSad = NULL; pWelsSvcRc->pGomCost = NULL; } } static inline int32_t RcConvertQp2QStep (int32_t iQP) { return g_kiQpToQstepTable[iQP]; } static inline int32_t RcConvertQStep2Qp (int32_t iQpStep) { return WELS_ROUND ((6 * log (iQpStep * 1.0f / INT_MULTIPLY) / log (2.0) + 4.0)); } void RcInitSequenceParameter (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = NULL; SSpatialLayerConfig* pDLayerParam = NULL; int32_t j = 0; int32_t iMbWidth = 0; bool bMultiSliceMode = false; int32_t iGomRowMode0 = 1, iGomRowMode1 = 1; for (j = 0; j < pEncCtx->pSvcParam->iSpatialLayerNum; j++) { SSliceCtx* pSliceCtx = &pEncCtx->pSliceCtxList[j]; pWelsSvcRc = &pEncCtx->pWelsSvcRc[j]; pDLayerParam = &pEncCtx->pSvcParam->sSpatialLayers[j]; iMbWidth = (pDLayerParam->iVideoWidth >> 4); pWelsSvcRc->iNumberMbFrame = iMbWidth * (pDLayerParam->iVideoHeight >> 4); pWelsSvcRc->iSliceNum = pSliceCtx->iSliceNumInFrame; pWelsSvcRc->iRcVaryPercentage = pEncCtx->pSvcParam->iBitsVaryPercentage; // % -- for temp pWelsSvcRc->iRcVaryRatio = pWelsSvcRc->iRcVaryPercentage; pWelsSvcRc->iSkipBufferRatio = SKIP_RATIO; pWelsSvcRc->iQpRangeUpperInFrame = (QP_RANGE_UPPER_MODE1 * MAX_BITS_VARY_PERCENTAGE - (( QP_RANGE_UPPER_MODE1 - QP_RANGE_MODE0) * pWelsSvcRc->iRcVaryRatio)) / MAX_BITS_VARY_PERCENTAGE; pWelsSvcRc->iQpRangeLowerInFrame = (QP_RANGE_LOWER_MODE1 * MAX_BITS_VARY_PERCENTAGE - (( QP_RANGE_LOWER_MODE1 - QP_RANGE_MODE0) * pWelsSvcRc->iRcVaryRatio)) / MAX_BITS_VARY_PERCENTAGE; if (iMbWidth <= MB_WIDTH_THRESHOLD_90P) { pWelsSvcRc->iSkipQpValue = SKIP_QP_90P; iGomRowMode0 = GOM_ROW_MODE0_90P; iGomRowMode1 = GOM_ROW_MODE1_90P; } else if (iMbWidth <= MB_WIDTH_THRESHOLD_180P) { pWelsSvcRc->iSkipQpValue = SKIP_QP_180P; iGomRowMode0 = GOM_ROW_MODE0_180P; iGomRowMode1 = GOM_ROW_MODE1_180P; } else if (iMbWidth <= MB_WIDTH_THRESHOLD_360P) { pWelsSvcRc->iSkipQpValue = SKIP_QP_360P; iGomRowMode0 = GOM_ROW_MODE0_360P; iGomRowMode1 = GOM_ROW_MODE1_360P; } else { pWelsSvcRc->iSkipQpValue = SKIP_QP_720P; iGomRowMode0 = GOM_ROW_MODE0_720P; iGomRowMode1 = GOM_ROW_MODE1_720P; } iGomRowMode0 = iGomRowMode1 + ((iGomRowMode0 - iGomRowMode1) * pWelsSvcRc->iRcVaryRatio / MAX_BITS_VARY_PERCENTAGE); pWelsSvcRc->iNumberMbGom = iMbWidth * iGomRowMode0; pWelsSvcRc->iMinQp = pEncCtx->pSvcParam->iMinQp; pWelsSvcRc->iMaxQp = pEncCtx->pSvcParam->iMaxQp; pWelsSvcRc->iFrameDeltaQpUpper = LAST_FRAME_QP_RANGE_UPPER_MODE1 - ((LAST_FRAME_QP_RANGE_UPPER_MODE1 - LAST_FRAME_QP_RANGE_UPPER_MODE0) * pWelsSvcRc->iRcVaryRatio / MAX_BITS_VARY_PERCENTAGE); pWelsSvcRc->iFrameDeltaQpLower = LAST_FRAME_QP_RANGE_LOWER_MODE1 - ((LAST_FRAME_QP_RANGE_LOWER_MODE1 - LAST_FRAME_QP_RANGE_LOWER_MODE0) * pWelsSvcRc->iRcVaryRatio / MAX_BITS_VARY_PERCENTAGE); pWelsSvcRc->iSkipFrameNum = 0; pWelsSvcRc->iGomSize = (pWelsSvcRc->iNumberMbFrame + pWelsSvcRc->iNumberMbGom - 1) / pWelsSvcRc->iNumberMbGom; RcInitLayerMemory (pWelsSvcRc, pEncCtx->pMemAlign, 1 + pEncCtx->pSvcParam->sDependencyLayers[j].iHighestTemporalId); bMultiSliceMode = ((SM_RASTER_SLICE == pDLayerParam->sSliceCfg.uiSliceMode) || (SM_ROWMB_SLICE == pDLayerParam->sSliceCfg.uiSliceMode) || (SM_DYN_SLICE == pDLayerParam->sSliceCfg.uiSliceMode)); if (bMultiSliceMode) pWelsSvcRc->iNumberMbGom = pWelsSvcRc->iNumberMbFrame; } } void RcInitTlWeight (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SRCTemporal* pTOverRc = pWelsSvcRc->pTemporalOverRc; SSpatialLayerInternal* pDLayerParam = &pEncCtx->pSvcParam->sDependencyLayers[pEncCtx->uiDependencyId]; const int32_t kiDecompositionStages = pDLayerParam->iDecompositionStages; const int32_t kiHighestTid = pDLayerParam->iHighestTemporalId; //Index 0:Virtual GOP size, Index 1:Frame rate //double WeightArray[4][4] = { {1.0, 0, 0, 0}, {0.6, 0.4, 0, 0}, {0.4, 0.3, 0.15, 0}, {0.25, 0.15, 0.125, 0.0875}}; int32_t iWeightArray[4][4] = { {2000, 0, 0, 0}, {1200, 800, 0, 0}, {800, 600, 300, 0}, {500, 300, 250, 175}}; // original*WEIGHT_MULTIPLY const int32_t kiGopSize = (1 << kiDecompositionStages); int32_t i, k, n; n = 0; while (n <= kiHighestTid) { pTOverRc[n].iTlayerWeight = iWeightArray[kiDecompositionStages][n]; ++ n; } //Calculate the frame index for the current frame and its reference frame for (n = 0; n < VGOP_SIZE; n += kiGopSize) { pWelsSvcRc->iTlOfFrames[n] = 0; for (i = 1; i <= kiDecompositionStages; i++) { for (k = 1 << (kiDecompositionStages - i); k < kiGopSize; k += (kiGopSize >> (i - 1))) { pWelsSvcRc->iTlOfFrames[k + n] = i; } } } pWelsSvcRc->iPreviousGopSize = kiGopSize; pWelsSvcRc->iGopNumberInVGop = VGOP_SIZE / kiGopSize; } void RcUpdateBitrateFps (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SRCTemporal* pTOverRc = pWelsSvcRc->pTemporalOverRc; SSpatialLayerConfig* pDLayerParam = &pEncCtx->pSvcParam->sSpatialLayers[pEncCtx->uiDependencyId]; SSpatialLayerInternal* pDLayerParamInternal = &pEncCtx->pSvcParam->sDependencyLayers[pEncCtx->uiDependencyId]; const int32_t kiGopSize = (1 << pDLayerParamInternal->iDecompositionStages); const int32_t kiHighestTid = pDLayerParamInternal->iHighestTemporalId; const int32_t input_iBitsPerFrame = WELS_DIV_ROUND (pDLayerParam->iSpatialBitrate, pDLayerParamInternal->fOutputFrameRate); const int64_t kiGopBits = input_iBitsPerFrame * kiGopSize; int32_t i; pWelsSvcRc->iBitRate = pDLayerParam->iSpatialBitrate; pWelsSvcRc->fFrameRate = pDLayerParamInternal->fOutputFrameRate; int32_t iTargetVaryRange = ((MAX_BITS_VARY_PERCENTAGE - pWelsSvcRc->iRcVaryRatio) >> 1); int32_t iMinBitsRatio = MAX_BITS_VARY_PERCENTAGE - iTargetVaryRange; int32_t iMaxBitsRatio = MAX_BITS_VARY_PERCENTAGE_x3d2; for (i = 0; i <= kiHighestTid; i++) { const int64_t kdConstraitBits = kiGopBits * pTOverRc[i].iTlayerWeight; pTOverRc[i].iMinBitsTl = WELS_DIV_ROUND (kdConstraitBits * iMinBitsRatio, MAX_BITS_VARY_PERCENTAGE * WEIGHT_MULTIPLY); pTOverRc[i].iMaxBitsTl = WELS_DIV_ROUND (kdConstraitBits * iMaxBitsRatio, MAX_BITS_VARY_PERCENTAGE * WEIGHT_MULTIPLY); } //When bitrate is changed, pBuffer size should be updated pWelsSvcRc->iBufferSizeSkip = WELS_DIV_ROUND (pWelsSvcRc->iBitRate * pWelsSvcRc->iSkipBufferRatio, INT_MULTIPLY); pWelsSvcRc->iBufferSizePadding = WELS_DIV_ROUND (pWelsSvcRc->iBitRate * PADDING_BUFFER_RATIO, INT_MULTIPLY); //change remaining bits if (pWelsSvcRc->iBitsPerFrame > REMAIN_BITS_TH) { pWelsSvcRc->iRemainingBits = WELS_DIV_ROUND (static_cast<int64_t> (pWelsSvcRc->iRemainingBits) * input_iBitsPerFrame, pWelsSvcRc->iBitsPerFrame); } pWelsSvcRc->iBitsPerFrame = input_iBitsPerFrame; pWelsSvcRc->iMaxBitsPerFrame = WELS_DIV_ROUND (pDLayerParam->iMaxSpatialBitrate, pDLayerParamInternal->fOutputFrameRate); } void RcInitVGop (sWelsEncCtx* pEncCtx) { const int32_t kiDid = pEncCtx->uiDependencyId; SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[kiDid]; SRCTemporal* pTOverRc = pWelsSvcRc->pTemporalOverRc; const int32_t kiHighestTid = pEncCtx->pSvcParam->sDependencyLayers[kiDid].iHighestTemporalId; pWelsSvcRc->iRemainingBits = VGOP_SIZE * pWelsSvcRc->iBitsPerFrame; pWelsSvcRc->iRemainingWeights = pWelsSvcRc->iGopNumberInVGop * WEIGHT_MULTIPLY; pWelsSvcRc->iFrameCodedInVGop = 0; pWelsSvcRc->iGopIndexInVGop = 0; for (int32_t i = 0; i <= kiHighestTid; ++ i) pTOverRc[i].iGopBitsDq = 0; pWelsSvcRc->iSkipFrameInVGop = 0; } void RcInitRefreshParameter (sWelsEncCtx* pEncCtx) { const int32_t kiDid = pEncCtx->uiDependencyId; SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[kiDid]; SRCTemporal* pTOverRc = pWelsSvcRc->pTemporalOverRc; SSpatialLayerConfig* pDLayerParam = &pEncCtx->pSvcParam->sSpatialLayers[kiDid]; SSpatialLayerInternal* pDLayerParamInternal = &pEncCtx->pSvcParam->sDependencyLayers[kiDid]; const int32_t kiHighestTid = pDLayerParamInternal->iHighestTemporalId; int32_t i; //I frame R-Q Model pWelsSvcRc->iIntraComplexity = 0; pWelsSvcRc->iIntraMbCount = 0; //P frame R-Q Model for (i = 0; i <= kiHighestTid; i++) { pTOverRc[i].iPFrameNum = 0; pTOverRc[i].iLinearCmplx = 0; pTOverRc[i].iFrameCmplxMean = 0; } pWelsSvcRc->iBufferFullnessSkip = 0; pWelsSvcRc->iBufferMaxBRFullness[EVEN_TIME_WINDOW] = 0; pWelsSvcRc->iBufferMaxBRFullness[ODD_TIME_WINDOW] = 0; pWelsSvcRc->iPredFrameBit = 0; pWelsSvcRc->iBufferFullnessPadding = 0; pWelsSvcRc->iGopIndexInVGop = 0; pWelsSvcRc->iRemainingBits = 0; pWelsSvcRc->iBitsPerFrame = 0; //Backup the initial bitrate and fps pWelsSvcRc->iPreviousBitrate = pDLayerParam->iSpatialBitrate; pWelsSvcRc->dPreviousFps = pDLayerParamInternal->fOutputFrameRate; memset (pWelsSvcRc->pCurrentFrameGomSad, 0, pWelsSvcRc->iGomSize * sizeof (int32_t)); RcInitTlWeight (pEncCtx); RcUpdateBitrateFps (pEncCtx); RcInitVGop (pEncCtx); } bool RcJudgeBitrateFpsUpdate (sWelsEncCtx* pEncCtx) { int32_t iCurDid = pEncCtx->uiDependencyId; SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[iCurDid]; SSpatialLayerInternal* pDLayerParamInternal = &pEncCtx->pSvcParam->sDependencyLayers[iCurDid]; SSpatialLayerConfig* pDLayerParam = &pEncCtx->pSvcParam->sSpatialLayers[iCurDid]; if ((pWelsSvcRc->iPreviousBitrate != pDLayerParam->iSpatialBitrate) || (pWelsSvcRc->dPreviousFps - pDLayerParamInternal->fOutputFrameRate) > EPSN || (pWelsSvcRc->dPreviousFps - pDLayerParamInternal->fOutputFrameRate) < -EPSN) { pWelsSvcRc->iPreviousBitrate = pDLayerParam->iSpatialBitrate; pWelsSvcRc->dPreviousFps = pDLayerParamInternal->fOutputFrameRate; return true; } else return false; } #if GOM_TRACE_FLAG void RcTraceVGopBitrate (sWelsEncCtx* pEncCtx) { const int32_t kiDid = pEncCtx->uiDependencyId; SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[kiDid]; if (pWelsSvcRc->iFrameCodedInVGop) { const int32_t kiHighestTid = pEncCtx->pSvcParam->sDependencyLayers[kiDid].iHighestTemporalId; SRCTemporal* pTOverRc = pWelsSvcRc->pTemporalOverRc; int32_t iVGopBitrate = 0; int32_t iTotalBits = pWelsSvcRc->iPaddingBitrateStat; int32_t iTid = 0; while (iTid <= kiHighestTid) { iTotalBits += pTOverRc[iTid].iGopBitsDq; ++ iTid; } int32_t iFrameInVGop = pWelsSvcRc->iFrameCodedInVGop + pWelsSvcRc->iSkipFrameInVGop; if (0 != iFrameInVGop) iVGopBitrate = WELS_ROUND (iTotalBits / iFrameInVGop * pWelsSvcRc->fFrameRate); WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "[Rc] VGOPbitrate%d: %d ", kiDid, iVGopBitrate); if (iTotalBits > 0) { iTid = 0; while (iTid <= kiHighestTid) { WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "T%d=%8.3f ", iTid, (double) (pTOverRc[iTid].iGopBitsDq / iTotalBits)); ++ iTid; } } } } #endif void RcUpdateTemporalZero (sWelsEncCtx* pEncCtx) { const int32_t kiDid = pEncCtx->uiDependencyId; SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[kiDid]; SSpatialLayerInternal* pDLayerParam = &pEncCtx->pSvcParam->sDependencyLayers[kiDid]; const int32_t kiGopSize = (1 << pDLayerParam->iDecompositionStages); if (pWelsSvcRc->iPreviousGopSize != kiGopSize) { #if GOM_TRACE_FLAG RcTraceVGopBitrate (pEncCtx); #endif RcInitTlWeight (pEncCtx); RcInitVGop (pEncCtx); } else if (pWelsSvcRc->iGopIndexInVGop == pWelsSvcRc->iGopNumberInVGop || pEncCtx->eSliceType == I_SLICE) { #if GOM_TRACE_FLAG RcTraceVGopBitrate (pEncCtx); #endif RcInitVGop (pEncCtx); } pWelsSvcRc->iGopIndexInVGop++; } void RcInitIdrQp (sWelsEncCtx* pEncCtx) { double dBpp = 0; int32_t i; //64k@6fps for 90p: bpp 0.74 QP:24 //192k@12fps for 180p: bpp 0.28 QP:26 //512k@24fps for 360p: bpp 0.09 QP:30 //1500k@30fps for 720p: bpp 0.05 QP:32 double dBppArray[4][3] = {{0.5, 0.75, 1.0}, {0.2, 0.3, 0.4}, {0.05, 0.09, 0.13}, {0.03, 0.06, 0.1}}; int32_t dInitialQPArray[4][4] = {{28, 26, 24, 22}, {30, 28, 26, 24}, {32, 30, 28, 26}, {34, 32, 30, 28}}; int32_t iBppIndex = 0; SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SSpatialLayerConfig* pDLayerParam = &pEncCtx->pSvcParam->sSpatialLayers[pEncCtx->uiDependencyId]; SSpatialLayerInternal* pDLayerParamInternal = &pEncCtx->pSvcParam->sDependencyLayers[pEncCtx->uiDependencyId]; if (pDLayerParamInternal->fOutputFrameRate > EPSN && pDLayerParam->iVideoWidth && pDLayerParam->iVideoHeight) dBpp = (double) (pDLayerParam->iSpatialBitrate) / (double) (pDLayerParamInternal->fOutputFrameRate * pDLayerParam->iVideoWidth * pDLayerParam->iVideoHeight); else dBpp = 0.1; //Area*2 if (pDLayerParam->iVideoWidth * pDLayerParam->iVideoHeight <= 28800) // 90p video:160*90 iBppIndex = 0; else if (pDLayerParam->iVideoWidth * pDLayerParam->iVideoHeight <= 115200) // 180p video:320*180 iBppIndex = 1; else if (pDLayerParam->iVideoWidth * pDLayerParam->iVideoHeight <= 460800) // 360p video:640*360 iBppIndex = 2; else iBppIndex = 3; //Search for (i = 0; i < 3; i++) { if (dBpp <= dBppArray[iBppIndex][i]) break; } pWelsSvcRc->iInitialQp = dInitialQPArray[iBppIndex][i]; pWelsSvcRc->iInitialQp = WELS_CLIP3 (pWelsSvcRc->iInitialQp, pEncCtx->pSvcParam->iMinQp, pEncCtx->pSvcParam->iMaxQp); pEncCtx->iGlobalQp = pWelsSvcRc->iInitialQp; pWelsSvcRc->iQStep = RcConvertQp2QStep (pEncCtx->iGlobalQp); pWelsSvcRc->iLastCalculatedQScale = pEncCtx->iGlobalQp; } void RcCalculateIdrQp (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; //obtain the idr qp using previous idr complexity if (pWelsSvcRc->iNumberMbFrame != pWelsSvcRc->iIntraMbCount) { pWelsSvcRc->iIntraComplexity = pWelsSvcRc->iIntraComplexity * pWelsSvcRc->iNumberMbFrame / pWelsSvcRc->iIntraMbCount; } pWelsSvcRc->iInitialQp = RcConvertQStep2Qp (WELS_DIV_ROUND (pWelsSvcRc->iIntraComplexity, pWelsSvcRc->iTargetBits)); pWelsSvcRc->iInitialQp = WELS_CLIP3 (pWelsSvcRc->iInitialQp, pEncCtx->pSvcParam->iMinQp, pEncCtx->pSvcParam->iMaxQp); pEncCtx->iGlobalQp = pWelsSvcRc->iInitialQp; pWelsSvcRc->iQStep = RcConvertQp2QStep (pEncCtx->iGlobalQp); pWelsSvcRc->iLastCalculatedQScale = pEncCtx->iGlobalQp; } void RcCalculatePictureQp (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; int32_t iTl = pEncCtx->uiTemporalId; SRCTemporal* pTOverRc = &pWelsSvcRc->pTemporalOverRc[iTl]; int32_t iLumaQp = 0; if (0 == pTOverRc->iPFrameNum) { iLumaQp = pWelsSvcRc->iInitialQp; } else if (pWelsSvcRc->iCurrentBitsLevel == BITS_EXCEEDED) { iLumaQp = MAX_LOW_BR_QP; //limit QP int32_t iLastIdxCodecInVGop = pWelsSvcRc->iFrameCodedInVGop - 1; if (iLastIdxCodecInVGop < 0) iLastIdxCodecInVGop += VGOP_SIZE; int32_t iTlLast = pWelsSvcRc->iTlOfFrames[iLastIdxCodecInVGop]; int32_t iDeltaQpTemporal = iTl - iTlLast; if (0 == iTlLast && iTl > 0) iDeltaQpTemporal += 3; else if (0 == iTl && iTlLast > 0) iDeltaQpTemporal -= 3; iLumaQp = WELS_CLIP3 (iLumaQp, pWelsSvcRc->iLastCalculatedQScale - pWelsSvcRc->iFrameDeltaQpLower + iDeltaQpTemporal, pWelsSvcRc->iLastCalculatedQScale + pWelsSvcRc->iFrameDeltaQpUpper + iDeltaQpTemporal); iLumaQp = WELS_CLIP3 (iLumaQp, pEncCtx->pSvcParam->iMinQp, pEncCtx->pSvcParam->iMaxQp); pWelsSvcRc->iQStep = RcConvertQp2QStep (iLumaQp); pWelsSvcRc->iLastCalculatedQScale = iLumaQp; if (pEncCtx->pSvcParam->bEnableAdaptiveQuant) { iLumaQp = WELS_CLIP3 ((iLumaQp * INT_MULTIPLY - pEncCtx->pVaa->sAdaptiveQuantParam.iAverMotionTextureIndexToDeltaQp) / INT_MULTIPLY, pEncCtx->pSvcParam->iMinQp, pEncCtx->pSvcParam->iMaxQp); } pEncCtx->iGlobalQp = iLumaQp; return; } else { int64_t iCmplxRatio = WELS_DIV_ROUND64 (pEncCtx->pVaa->sComplexityAnalysisParam.iFrameComplexity * INT_MULTIPLY, pTOverRc->iFrameCmplxMean); iCmplxRatio = WELS_CLIP3 (iCmplxRatio, INT_MULTIPLY - FRAME_CMPLX_RATIO_RANGE, INT_MULTIPLY + FRAME_CMPLX_RATIO_RANGE); pWelsSvcRc->iQStep = WELS_DIV_ROUND ((pTOverRc->iLinearCmplx * iCmplxRatio), (pWelsSvcRc->iTargetBits * INT_MULTIPLY)); iLumaQp = RcConvertQStep2Qp (pWelsSvcRc->iQStep); //limit QP int32_t iLastIdxCodecInVGop = pWelsSvcRc->iFrameCodedInVGop - 1; if (iLastIdxCodecInVGop < 0) iLastIdxCodecInVGop += VGOP_SIZE; int32_t iTlLast = pWelsSvcRc->iTlOfFrames[iLastIdxCodecInVGop]; int32_t iDeltaQpTemporal = iTl - iTlLast; if (0 == iTlLast && iTl > 0) iDeltaQpTemporal += 3; else if (0 == iTl && iTlLast > 0) iDeltaQpTemporal -= 3; iLumaQp = WELS_CLIP3 (iLumaQp, pWelsSvcRc->iLastCalculatedQScale - pWelsSvcRc->iFrameDeltaQpLower + iDeltaQpTemporal, pWelsSvcRc->iLastCalculatedQScale + pWelsSvcRc->iFrameDeltaQpUpper + iDeltaQpTemporal); } iLumaQp = WELS_CLIP3 (iLumaQp, pEncCtx->pSvcParam->iMinQp, pEncCtx->pSvcParam->iMaxQp); pWelsSvcRc->iQStep = RcConvertQp2QStep (iLumaQp); pWelsSvcRc->iLastCalculatedQScale = iLumaQp; if (pEncCtx->pSvcParam->bEnableAdaptiveQuant) { iLumaQp = WELS_DIV_ROUND (iLumaQp * INT_MULTIPLY - pEncCtx->pVaa->sAdaptiveQuantParam.iAverMotionTextureIndexToDeltaQp, INT_MULTIPLY); iLumaQp = WELS_CLIP3 (iLumaQp, pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); } pEncCtx->iGlobalQp = iLumaQp; } void RcInitSliceInformation (sWelsEncCtx* pEncCtx) { SSliceCtx* pCurSliceCtx = pEncCtx->pCurDqLayer->pSliceEncCtx; SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SRCSlicing* pSOverRc = &pWelsSvcRc->pSlicingOverRc[0]; const int32_t kiSliceNum = pWelsSvcRc->iSliceNum; const int32_t kiBitsPerMb = WELS_DIV_ROUND (static_cast<int64_t> (pWelsSvcRc->iTargetBits) * INT_MULTIPLY, pWelsSvcRc->iNumberMbFrame); for (int32_t i = 0; i < kiSliceNum; i++) { pSOverRc->iStartMbSlice = pSOverRc->iEndMbSlice = pCurSliceCtx->pFirstMbInSlice[i]; pSOverRc->iEndMbSlice += (pCurSliceCtx->pCountMbNumInSlice[i] - 1); pSOverRc->iTotalQpSlice = 0; pSOverRc->iTotalMbSlice = 0; pSOverRc->iTargetBitsSlice = WELS_DIV_ROUND (kiBitsPerMb * pCurSliceCtx->pCountMbNumInSlice[i], INT_MULTIPLY); pSOverRc->iFrameBitsSlice = 0; pSOverRc->iGomBitsSlice = 0; ++ pSOverRc; } } void RcDecideTargetBits (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SRCTemporal* pTOverRc = &pWelsSvcRc->pTemporalOverRc[pEncCtx->uiTemporalId]; pWelsSvcRc->iCurrentBitsLevel = BITS_NORMAL; //allocate bits if (pEncCtx->eSliceType == I_SLICE) { pWelsSvcRc->iTargetBits = pWelsSvcRc->iBitsPerFrame * IDR_BITRATE_RATIO; } else { if (pWelsSvcRc->iRemainingWeights > pTOverRc->iTlayerWeight) pWelsSvcRc->iTargetBits = WELS_DIV_ROUND (static_cast<int64_t> (pWelsSvcRc->iRemainingBits) * pTOverRc->iTlayerWeight, pWelsSvcRc->iRemainingWeights); else //this case should be not hit. needs to more test case to verify this pWelsSvcRc->iTargetBits = pWelsSvcRc->iRemainingBits; if ((pWelsSvcRc->iTargetBits <= 0) && ((pEncCtx->pSvcParam->iRCMode == RC_BITRATE_MODE) && (pEncCtx->pSvcParam->bEnableFrameSkip == false))) { pWelsSvcRc->iCurrentBitsLevel = BITS_EXCEEDED; } pWelsSvcRc->iTargetBits = WELS_CLIP3 (pWelsSvcRc->iTargetBits, pTOverRc->iMinBitsTl, pTOverRc->iMaxBitsTl); } pWelsSvcRc->iRemainingWeights -= pTOverRc->iTlayerWeight; } void RcInitGomParameters (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SRCSlicing* pSOverRc = &pWelsSvcRc->pSlicingOverRc[0]; const int32_t kiSliceNum = pWelsSvcRc->iSliceNum; const int32_t kiGlobalQp = pEncCtx->iGlobalQp; pWelsSvcRc->iAverageFrameQp = 0; pWelsSvcRc->iMinFrameQp = 51; pWelsSvcRc->iMaxFrameQp = 0; for (int32_t i = 0; i < kiSliceNum; ++i) { pSOverRc->iComplexityIndexSlice = 0; pSOverRc->iCalculatedQpSlice = kiGlobalQp; ++ pSOverRc; } memset (pWelsSvcRc->pGomComplexity, 0, pWelsSvcRc->iGomSize * sizeof (double)); memset (pWelsSvcRc->pGomCost, 0, pWelsSvcRc->iGomSize * sizeof (int32_t)); } void RcCalculateMbQp (sWelsEncCtx* pEncCtx, SMB* pCurMb, const int32_t kiSliceId) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SRCSlicing* pSOverRc = &pWelsSvcRc->pSlicingOverRc[kiSliceId]; int32_t iLumaQp = pSOverRc->iCalculatedQpSlice; SDqLayer* pCurLayer = pEncCtx->pCurDqLayer; const uint8_t kuiChromaQpIndexOffset = pCurLayer->sLayerInfo.pPpsP->uiChromaQpIndexOffset; if (pEncCtx->pSvcParam->bEnableAdaptiveQuant) { iLumaQp = (int8_t)WELS_CLIP3 (iLumaQp + pEncCtx->pVaa->sAdaptiveQuantParam.pMotionTextureIndexToDeltaQp[pCurMb->iMbXY], pWelsSvcRc->iMinQp, 51); } pCurMb->uiChromaQp = g_kuiChromaQpTable[CLIP3_QP_0_51 (iLumaQp + kuiChromaQpIndexOffset)]; pCurMb->uiLumaQp = iLumaQp; } SWelsSvcRc* RcJudgeBaseUsability (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = NULL, *pWelsSvcRc_Base = NULL; SSpatialLayerConfig* pDlpBase = NULL, *pDLayerParam = NULL; SSpatialLayerInternal* pDlpBaseInternal = NULL; if (pEncCtx->uiDependencyId <= 0) return NULL; pDlpBaseInternal = &pEncCtx->pSvcParam->sDependencyLayers[pEncCtx->uiDependencyId - 1]; pDlpBase = &pEncCtx->pSvcParam->sSpatialLayers[pEncCtx->uiDependencyId - 1]; pWelsSvcRc_Base = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId - 1]; if (pEncCtx->uiTemporalId <= pDlpBaseInternal->iDecompositionStages) { pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; pWelsSvcRc_Base = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId - 1]; pDLayerParam = &pEncCtx->pSvcParam->sSpatialLayers[pEncCtx->uiDependencyId]; pDlpBase = &pEncCtx->pSvcParam->sSpatialLayers[pEncCtx->uiDependencyId - 1]; if ((pDLayerParam->iVideoWidth * pDLayerParam->iVideoHeight / pWelsSvcRc->iNumberMbGom) == (pDlpBase->iVideoWidth * pDlpBase->iVideoHeight / pWelsSvcRc_Base->iNumberMbGom)) return pWelsSvcRc_Base; else return NULL; } else return NULL; } void RcGomTargetBits (sWelsEncCtx* pEncCtx, const int32_t kiSliceId) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SWelsSvcRc* pWelsSvcRc_Base = NULL; SRCSlicing* pSOverRc = &pWelsSvcRc->pSlicingOverRc[kiSliceId]; int32_t iAllocateBits = 0; int32_t iSumSad = 0; int32_t iLastGomIndex = 0; int32_t iLeftBits = 0; const int32_t kiComplexityIndex = pSOverRc->iComplexityIndexSlice; int32_t i; iLastGomIndex = pSOverRc->iEndMbSlice / pWelsSvcRc->iNumberMbGom; iLeftBits = pSOverRc->iTargetBitsSlice - pSOverRc->iFrameBitsSlice; if (iLeftBits <= 0) { pSOverRc->iGomTargetBits = 0; return; } else if (kiComplexityIndex >= iLastGomIndex) { iAllocateBits = iLeftBits; } else { pWelsSvcRc_Base = RcJudgeBaseUsability (pEncCtx); pWelsSvcRc_Base = (pWelsSvcRc_Base) ? pWelsSvcRc_Base : pWelsSvcRc; for (i = kiComplexityIndex; i <= iLastGomIndex; i++) { iSumSad += pWelsSvcRc_Base->pCurrentFrameGomSad[i]; } if (0 == iSumSad) iAllocateBits = WELS_DIV_ROUND (iLeftBits, (iLastGomIndex - kiComplexityIndex)); else iAllocateBits = WELS_DIV_ROUND ((int64_t)iLeftBits * pWelsSvcRc_Base->pCurrentFrameGomSad[kiComplexityIndex + 1], iSumSad); } pSOverRc->iGomTargetBits = iAllocateBits; } void RcCalculateGomQp (sWelsEncCtx* pEncCtx, SMB* pCurMb, int32_t iSliceId) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SRCSlicing* pSOverRc = &pWelsSvcRc->pSlicingOverRc[iSliceId]; int64_t iBitsRatio = 1; int64_t iLeftBits = pSOverRc->iTargetBitsSlice - pSOverRc->iFrameBitsSlice; int64_t iTargetLeftBits = iLeftBits + pSOverRc->iGomBitsSlice - pSOverRc->iGomTargetBits; if (iLeftBits <= 0) { pSOverRc->iCalculatedQpSlice += 2; } else { //globe decision iBitsRatio = 10000 * iLeftBits / (iTargetLeftBits + 1); if (iBitsRatio < 8409) //2^(-1.5/6)*10000 pSOverRc->iCalculatedQpSlice += 2; else if (iBitsRatio < 9439) //2^(-0.5/6)*10000 pSOverRc->iCalculatedQpSlice += 1; else if (iBitsRatio > 10600) //2^(0.5/6)*10000 pSOverRc->iCalculatedQpSlice -= 1; else if (iBitsRatio > 11900) //2^(1.5/6)*10000 pSOverRc->iCalculatedQpSlice -= 2; } pSOverRc->iCalculatedQpSlice = WELS_CLIP3 (pSOverRc->iCalculatedQpSlice, pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); if (! (((pEncCtx->pSvcParam->iRCMode == RC_BITRATE_MODE) || (pEncCtx->pSvcParam->iRCMode == RC_TIMESTAMP_MODE)) && (pEncCtx->pSvcParam->bEnableFrameSkip == false))) pSOverRc->iCalculatedQpSlice = WELS_CLIP3 (pSOverRc->iCalculatedQpSlice, pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); pSOverRc->iGomBitsSlice = 0; } void RcVBufferCalculationSkip (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SRCTemporal* pTOverRc = pWelsSvcRc->pTemporalOverRc; const int32_t kiOutputBits = pWelsSvcRc->iBitsPerFrame; const int32_t kiOutputMaxBits = pWelsSvcRc->iMaxBitsPerFrame; //condition 1: whole pBuffer fullness pWelsSvcRc->iBufferFullnessSkip += (pWelsSvcRc->iFrameDqBits - kiOutputBits); pWelsSvcRc->iBufferMaxBRFullness[EVEN_TIME_WINDOW] += (pWelsSvcRc->iFrameDqBits - kiOutputMaxBits); pWelsSvcRc->iBufferMaxBRFullness[ODD_TIME_WINDOW] += (pWelsSvcRc->iFrameDqBits - kiOutputMaxBits); WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "[Rc] bits in buffer = %" PRId64 ", bits in Max bitrate buffer = %" PRId64, pWelsSvcRc->iBufferFullnessSkip, pWelsSvcRc->iBufferMaxBRFullness[EVEN_TIME_WINDOW]); //condition 2: VGOP bits constraint int64_t iVGopBitsPred = 0; for (int32_t i = pWelsSvcRc->iFrameCodedInVGop + 1; i < VGOP_SIZE; i++) iVGopBitsPred += pTOverRc[pWelsSvcRc->iTlOfFrames[i]].iMinBitsTl; iVGopBitsPred -= pWelsSvcRc->iRemainingBits; double dIncPercent = iVGopBitsPred * 100.0 / (pWelsSvcRc->iBitsPerFrame * VGOP_SIZE) - (double)VGOP_BITS_PERCENTAGE_DIFF; if ((pWelsSvcRc->iBufferFullnessSkip > pWelsSvcRc->iBufferSizeSkip && pWelsSvcRc->iAverageFrameQp > pWelsSvcRc->iSkipQpValue) || (dIncPercent > pWelsSvcRc->iRcVaryPercentage)) { pEncCtx->iSkipFrameFlag = 1; } } void WelsRcFrameDelayJudge (sWelsEncCtx* pEncCtx, EVideoFrameType eFrameType, long long uiTimeStamp) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SSpatialLayerConfig* pDLayerParam = &pEncCtx->pSvcParam->sSpatialLayers[pEncCtx->uiDependencyId]; //SSpatialLayerInternal* pDLayerParamInternal = &pEncCtx->pSvcParam->sDependencyLayers[pEncCtx->uiDependencyId]; if (!pEncCtx->pSvcParam->bEnableFrameSkip) return; const int32_t iSentBits = pWelsSvcRc->iBitsPerFrame; const int32_t kiOutputMaxBits = pWelsSvcRc->iMaxBitsPerFrame; const int64_t kiMaxSpatialBitRate = pDLayerParam->iMaxSpatialBitrate; //estimate allowed continual skipped frames in the sequence const int32_t iPredSkipFramesTarBr = (WELS_DIV_ROUND (pWelsSvcRc->iBufferFullnessSkip, iSentBits) + 1) >> 1; const int32_t iPredSkipFramesMaxBr = (WELS_MAX (WELS_DIV_ROUND (pWelsSvcRc->iBufferMaxBRFullness[EVEN_TIME_WINDOW], kiOutputMaxBits), 0) + 1) >> 1; //calculate the remaining bits in TIME_CHECK_WINDOW const int32_t iAvailableBitsInTimeWindow = WELS_DIV_ROUND ((TIME_CHECK_WINDOW - pEncCtx->iCheckWindowInterval) * kiMaxSpatialBitRate, 1000); const int32_t iAvailableBitsInShiftTimeWindow = WELS_DIV_ROUND ((TIME_CHECK_WINDOW - pEncCtx->iCheckWindowIntervalShift) * kiMaxSpatialBitRate, 1000); bool bJudgeMaxBRbSkip[TIME_WINDOW_TOTAL];//0: EVEN_TIME_WINDOW; 1: ODD_TIME_WINDOW /* 4 cases for frame skipping 1:skipping when buffer size larger than target threshold and current continual skip frames is allowed 2:skipping when MaxBr buffer size + predict frame size - remaining bits in time window < 0 and current continual skip frames is allowed 3:if in last ODD_TIME_WINDOW the MAX Br is overflowed, make more strict skipping conditions 4:such as case 3 in the other window */ bool bJudgeBufferFullSkip = (pEncCtx->iContinualSkipFrames <= iPredSkipFramesTarBr) && (pWelsSvcRc->iBufferFullnessSkip > pWelsSvcRc->iBufferSizeSkip); bool bJudgeMaxBRbufferFullSkip = (pEncCtx->iContinualSkipFrames <= iPredSkipFramesMaxBr) && (pEncCtx->iCheckWindowInterval > TIME_CHECK_WINDOW / 2) && (pWelsSvcRc->iBufferMaxBRFullness[EVEN_TIME_WINDOW] + pWelsSvcRc->iPredFrameBit - iAvailableBitsInTimeWindow > 0); bJudgeMaxBRbSkip[EVEN_TIME_WINDOW] = (pEncCtx->iCheckWindowInterval > TIME_CHECK_WINDOW / 2) && (pWelsSvcRc->bNeedShiftWindowCheck[EVEN_TIME_WINDOW]) && (pWelsSvcRc->iBufferMaxBRFullness[EVEN_TIME_WINDOW] + pWelsSvcRc->iPredFrameBit - iAvailableBitsInTimeWindow + kiOutputMaxBits > 0); bJudgeMaxBRbSkip[ODD_TIME_WINDOW] = (pEncCtx->iCheckWindowIntervalShift > TIME_CHECK_WINDOW / 2) && (pWelsSvcRc->bNeedShiftWindowCheck[ODD_TIME_WINDOW]) && (pWelsSvcRc->iBufferMaxBRFullness[ODD_TIME_WINDOW] + pWelsSvcRc->iPredFrameBit - iAvailableBitsInShiftTimeWindow + kiOutputMaxBits > 0); pWelsSvcRc->bSkipFlag = false; if (bJudgeBufferFullSkip || bJudgeMaxBRbufferFullSkip || bJudgeMaxBRbSkip[EVEN_TIME_WINDOW] || bJudgeMaxBRbSkip[ODD_TIME_WINDOW]) { pWelsSvcRc->bSkipFlag = true; pWelsSvcRc->iSkipFrameNum++; pWelsSvcRc->iSkipFrameInVGop++; pWelsSvcRc->iBufferFullnessSkip -= iSentBits; pWelsSvcRc->iRemainingBits += iSentBits; pWelsSvcRc->iBufferMaxBRFullness[EVEN_TIME_WINDOW] -= kiOutputMaxBits; pWelsSvcRc->iBufferMaxBRFullness[ODD_TIME_WINDOW] -= kiOutputMaxBits; WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "[Rc] bits in buffer = %" PRId64 ", bits in Max bitrate buffer = %" PRId64 ", Predict skip frames = %d and %d", pWelsSvcRc->iBufferFullnessSkip, pWelsSvcRc->iBufferMaxBRFullness[EVEN_TIME_WINDOW], iPredSkipFramesTarBr, iPredSkipFramesMaxBr); pWelsSvcRc->iBufferFullnessSkip = WELS_MAX (pWelsSvcRc->iBufferFullnessSkip, 0); } } //loop each layer to check if have skip frame when RC and frame skip enable (maxbr>0) bool CheckFrameSkipBasedMaxbr (sWelsEncCtx* pEncCtx, int32_t iSpatialNum, EVideoFrameType eFrameType, const uint32_t uiTimeStamp) { SSpatialPicIndex* pSpatialIndexMap = &pEncCtx->sSpatialIndexMap[0]; bool bSkipMustFlag = false; if (!pEncCtx->pFuncList->pfRc.pfWelsRcPicDelayJudge) return false; for (int32_t i = 0; i < iSpatialNum; i++) { if (UNSPECIFIED_BIT_RATE == pEncCtx->pSvcParam->sSpatialLayers[i].iMaxSpatialBitrate) { break; } pEncCtx->uiDependencyId = (uint8_t) (pSpatialIndexMap + i)->iDid; pEncCtx->pFuncList->pfRc.pfWelsRcPicDelayJudge (pEncCtx, eFrameType, uiTimeStamp); if (true == pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId].bSkipFlag) { bSkipMustFlag = true; pEncCtx->iContinualSkipFrames++; break; } } if (bSkipMustFlag) { for (int32_t i = 0; i < iSpatialNum; i++) pEncCtx->pWelsSvcRc[i].uiLastTimeStamp = uiTimeStamp; } return bSkipMustFlag; } void UpdateBufferWhenFrameSkipped (sWelsEncCtx* pEncCtx, int32_t iSpatialNum) { SSpatialPicIndex* pSpatialIndexMap = &pEncCtx->sSpatialIndexMap[0]; for (int32_t i = 0; i < iSpatialNum; i++) { int32_t iCurDid = (pSpatialIndexMap + i)->iDid; SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[iCurDid]; const int32_t kiOutputBits = pWelsSvcRc->iBitsPerFrame; const int32_t kiOutputMaxBits = pWelsSvcRc->iMaxBitsPerFrame; pWelsSvcRc->iBufferFullnessSkip = pWelsSvcRc->iBufferFullnessSkip - kiOutputBits; pWelsSvcRc->iBufferMaxBRFullness[EVEN_TIME_WINDOW] -= kiOutputMaxBits; pWelsSvcRc->iBufferMaxBRFullness[ODD_TIME_WINDOW] -= kiOutputMaxBits; WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "[Rc] bits in buffer = %" PRId64 ", bits in Max bitrate buffer = %" PRId64, pWelsSvcRc->iBufferFullnessSkip, pWelsSvcRc->iBufferMaxBRFullness[EVEN_TIME_WINDOW]); pWelsSvcRc->iBufferFullnessSkip = WELS_MAX (pWelsSvcRc->iBufferFullnessSkip, 0); pWelsSvcRc->iRemainingBits += kiOutputBits; pWelsSvcRc->iSkipFrameNum++; pWelsSvcRc->iSkipFrameInVGop++; } pEncCtx->iContinualSkipFrames++; if ((pEncCtx->iContinualSkipFrames % 3) == 0) { //output a warning when iContinualSkipFrames is large enough, which may indicate subjective quality problem //note that here iContinualSkipFrames must be >0, so the log output will be 3/6/.... WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_WARNING, "[Rc] iContinualSkipFrames(%d) is large", pEncCtx->iContinualSkipFrames); } } void UpdateMaxBrCheckWindowStatus (sWelsEncCtx* pEncCtx, int32_t iSpatialNum, const long long uiTimeStamp) { SSpatialPicIndex* pSpatialIndexMap = &pEncCtx->sSpatialIndexMap[0]; if (pEncCtx->bCheckWindowStatusRefreshFlag) { pEncCtx->iCheckWindowCurrentTs = uiTimeStamp; } else { pEncCtx->iCheckWindowCurrentTs = pEncCtx->iCheckWindowStartTs = uiTimeStamp; pEncCtx->bCheckWindowStatusRefreshFlag = true; for (int32_t i = 0; i < iSpatialNum; i++) { int32_t iCurDid = (pSpatialIndexMap + i)->iDid; pEncCtx->pWelsSvcRc[iCurDid].iBufferFullnessSkip = 0; pEncCtx->pWelsSvcRc[iCurDid].iBufferMaxBRFullness[ODD_TIME_WINDOW] = 0; pEncCtx->pWelsSvcRc[iCurDid].iBufferMaxBRFullness[EVEN_TIME_WINDOW] = 0; pEncCtx->pWelsSvcRc[iCurDid].bNeedShiftWindowCheck[ODD_TIME_WINDOW] = false; pEncCtx->pWelsSvcRc[iCurDid].bNeedShiftWindowCheck[EVEN_TIME_WINDOW] = false; } } pEncCtx->iCheckWindowInterval = (int32_t) (pEncCtx->iCheckWindowCurrentTs - pEncCtx->iCheckWindowStartTs); if (pEncCtx->iCheckWindowInterval >= (TIME_CHECK_WINDOW >> 1) && !pEncCtx->bCheckWindowShiftResetFlag) { pEncCtx->bCheckWindowShiftResetFlag = true; for (int32_t i = 0; i < iSpatialNum; i++) { int32_t iCurDid = (pSpatialIndexMap + i)->iDid; if (pEncCtx->pWelsSvcRc[iCurDid].iBufferMaxBRFullness[ODD_TIME_WINDOW] > 0 && pEncCtx->pWelsSvcRc[iCurDid].iBufferMaxBRFullness[ODD_TIME_WINDOW] != pEncCtx->pWelsSvcRc[iCurDid].iBufferMaxBRFullness[0]) { pEncCtx->pWelsSvcRc[iCurDid].bNeedShiftWindowCheck[EVEN_TIME_WINDOW] = true; } else { pEncCtx->pWelsSvcRc[iCurDid].bNeedShiftWindowCheck[EVEN_TIME_WINDOW] = false; } pEncCtx->pWelsSvcRc[iCurDid].iBufferMaxBRFullness[ODD_TIME_WINDOW] = 0; } } pEncCtx->iCheckWindowIntervalShift = pEncCtx->iCheckWindowInterval >= (TIME_CHECK_WINDOW >> 1) ? pEncCtx->iCheckWindowInterval - (TIME_CHECK_WINDOW >> 1) : pEncCtx->iCheckWindowInterval + (TIME_CHECK_WINDOW >> 1); if (pEncCtx->iCheckWindowInterval >= TIME_CHECK_WINDOW || pEncCtx->iCheckWindowInterval == 0) { pEncCtx->iCheckWindowStartTs = pEncCtx->iCheckWindowCurrentTs; pEncCtx->iCheckWindowInterval = 0; pEncCtx->bCheckWindowShiftResetFlag = false; for (int32_t i = 0; i < iSpatialNum; i++) { int32_t iCurDid = (pSpatialIndexMap + i)->iDid; if (pEncCtx->pWelsSvcRc[iCurDid].iBufferMaxBRFullness[EVEN_TIME_WINDOW] > 0) { pEncCtx->pWelsSvcRc[iCurDid].bNeedShiftWindowCheck[ODD_TIME_WINDOW] = true; } else { pEncCtx->pWelsSvcRc[iCurDid].bNeedShiftWindowCheck[ODD_TIME_WINDOW] = false; } pEncCtx->pWelsSvcRc[iCurDid].iBufferMaxBRFullness[EVEN_TIME_WINDOW] = 0; } } return; } bool WelsRcPostFrameSkipping (sWelsEncCtx* pCtx, const int32_t iDid, const long long uiTimeStamp) { //TODO: put in the decision of rate-control return false; } void WelsRcPostFrameSkippedUpdate (sWelsEncCtx* pCtx, const int32_t iDid) { //TODO: do something to update buffers after post-skipping is done //let RC know post-skipping happened and adjust strategy accordingly } void RcVBufferCalculationPadding (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; const int32_t kiOutputBits = pWelsSvcRc->iBitsPerFrame; const int32_t kiBufferThreshold = WELS_DIV_ROUND (PADDING_THRESHOLD * (-pWelsSvcRc->iBufferSizePadding), INT_MULTIPLY); pWelsSvcRc->iBufferFullnessPadding += (pWelsSvcRc->iFrameDqBits - kiOutputBits); if (pWelsSvcRc->iBufferFullnessPadding < kiBufferThreshold) { pWelsSvcRc->iPaddingSize = -pWelsSvcRc->iBufferFullnessPadding; pWelsSvcRc->iPaddingSize >>= 3; // /8 pWelsSvcRc->iBufferFullnessPadding = 0; } else pWelsSvcRc->iPaddingSize = 0; } void RcTraceFrameBits (sWelsEncCtx* pEncCtx, long long uiTimeStamp) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; if (pWelsSvcRc->iPredFrameBit != 0) pWelsSvcRc->iPredFrameBit = (int32_t) (LAST_FRAME_PREDICT_WEIGHT * pWelsSvcRc->iFrameDqBits + (1 - LAST_FRAME_PREDICT_WEIGHT) * pWelsSvcRc->iPredFrameBit); else pWelsSvcRc->iPredFrameBit = pWelsSvcRc->iFrameDqBits; WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "[Rc]Layer %d: Frame timestamp = %lld, Frame type = %d, encoding_qp = %d, average qp = %d, max qp = %d, min qp = %d, index = %d, " "iTid = %d, used = %d, bitsperframe = %d, target = %d, remainingbits = %d, skipbuffersize = %d", pEncCtx->uiDependencyId, uiTimeStamp, pEncCtx->eSliceType, pEncCtx->iGlobalQp, pWelsSvcRc->iAverageFrameQp, pWelsSvcRc->iMaxFrameQp, pWelsSvcRc->iMinFrameQp, pEncCtx->iFrameIndex, pEncCtx->uiTemporalId, pWelsSvcRc->iFrameDqBits, pWelsSvcRc->iBitsPerFrame, pWelsSvcRc->iTargetBits, pWelsSvcRc->iRemainingBits, pWelsSvcRc->iBufferSizeSkip); } void RcUpdatePictureQpBits (sWelsEncCtx* pEncCtx, int32_t iCodedBits) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SRCSlicing* pSOverRc = &pWelsSvcRc->pSlicingOverRc[0]; SSliceCtx* pCurSliceCtx = pEncCtx->pCurDqLayer->pSliceEncCtx; int32_t iTotalQp = 0, iTotalMb = 0; int32_t i; if (pEncCtx->eSliceType == P_SLICE) { for (i = 0; i < pCurSliceCtx->iSliceNumInFrame; i++) { iTotalQp += pSOverRc->iTotalQpSlice; iTotalMb += pSOverRc->iTotalMbSlice; ++ pSOverRc; } if (iTotalMb > 0) pWelsSvcRc->iAverageFrameQp = WELS_DIV_ROUND (INT_MULTIPLY * iTotalQp, iTotalMb * INT_MULTIPLY); else pWelsSvcRc->iAverageFrameQp = pEncCtx->iGlobalQp; } else { pWelsSvcRc->iAverageFrameQp = pEncCtx->iGlobalQp; } pWelsSvcRc->iFrameDqBits = iCodedBits; pWelsSvcRc->iLastCalculatedQScale = pWelsSvcRc->iAverageFrameQp; pWelsSvcRc->pTemporalOverRc[pEncCtx->uiTemporalId].iGopBitsDq += pWelsSvcRc->iFrameDqBits; } void RcUpdateIntraComplexity (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; int32_t iAlpha = WELS_DIV_ROUND (INT_MULTIPLY, (1 + pWelsSvcRc->iIdrNum)); if (iAlpha < (INT_MULTIPLY / 4)) iAlpha = INT_MULTIPLY / 4; int32_t iQStep = RcConvertQp2QStep (pWelsSvcRc->iAverageFrameQp); int64_t iIntraCmplx = iQStep * static_cast<int64_t> (pWelsSvcRc->iFrameDqBits); pWelsSvcRc->iIntraComplexity = WELS_DIV_ROUND (((INT_MULTIPLY - iAlpha) * pWelsSvcRc->iIntraComplexity + iAlpha * iIntraCmplx), INT_MULTIPLY); pWelsSvcRc->iIntraMbCount = pWelsSvcRc->iNumberMbFrame; pWelsSvcRc->iIdrNum++; if (pWelsSvcRc->iIdrNum > 255) pWelsSvcRc->iIdrNum = 255; WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "RcUpdateIntraComplexity iFrameDqBits = %d,iQStep= %d,iIntraCmplx = %" PRId64, pWelsSvcRc->iFrameDqBits, pWelsSvcRc->iQStep, pWelsSvcRc->iIntraComplexity); } void RcUpdateFrameComplexity (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; const int32_t kiTl = pEncCtx->uiTemporalId; SRCTemporal* pTOverRc = &pWelsSvcRc->pTemporalOverRc[kiTl]; int32_t iQStep = RcConvertQp2QStep (pWelsSvcRc->iAverageFrameQp); if (0 == pTOverRc->iPFrameNum) { pTOverRc->iLinearCmplx = ((int64_t)pWelsSvcRc->iFrameDqBits) * iQStep; } else { pTOverRc->iLinearCmplx = WELS_DIV_ROUND64 ((LINEAR_MODEL_DECAY_FACTOR * (int64_t)pTOverRc->iLinearCmplx + (INT_MULTIPLY - LINEAR_MODEL_DECAY_FACTOR) * (int64_t) (pWelsSvcRc->iFrameDqBits * iQStep)), INT_MULTIPLY); } int32_t iAlpha = WELS_DIV_ROUND (INT_MULTIPLY, (1 + pTOverRc->iPFrameNum)); if (iAlpha < SMOOTH_FACTOR_MIN_VALUE) iAlpha = SMOOTH_FACTOR_MIN_VALUE; pTOverRc->iFrameCmplxMean = WELS_DIV_ROUND ((LINEAR_MODEL_DECAY_FACTOR * static_cast<int64_t> (pTOverRc->iFrameCmplxMean) + (INT_MULTIPLY - LINEAR_MODEL_DECAY_FACTOR) * pEncCtx->pVaa->sComplexityAnalysisParam.iFrameComplexity), INT_MULTIPLY); pTOverRc->iPFrameNum++; if (pTOverRc->iPFrameNum > 255) pTOverRc->iPFrameNum = 255; WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "RcUpdateFrameComplexity iFrameDqBits = %d,iQStep= %d,pWelsSvcRc->iQStep= %d,pTOverRc->iLinearCmplx = %" PRId64, pWelsSvcRc->iFrameDqBits, iQStep, pWelsSvcRc->iQStep, pTOverRc->iLinearCmplx); WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "iFrameCmplxMean = %d,iFrameComplexity = %lld", pTOverRc->iFrameCmplxMean, pEncCtx->pVaa->sComplexityAnalysisParam.iFrameComplexity); } int32_t RcCalculateCascadingQp (struct TagWelsEncCtx* pEncCtx, int32_t iQp) { int32_t iTemporalQp = 0; if (pEncCtx->pSvcParam->iDecompStages) { if (pEncCtx->uiTemporalId == 0) iTemporalQp = iQp - 3 - (pEncCtx->pSvcParam->iDecompStages - 1); else iTemporalQp = iQp - (pEncCtx->pSvcParam->iDecompStages - pEncCtx->uiTemporalId); iTemporalQp = WELS_CLIP3 (iTemporalQp, 1, 51); } else iTemporalQp = iQp; return iTemporalQp; } void WelsRcPictureInitGom (sWelsEncCtx* pEncCtx, long long uiTimeStamp) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; if (pEncCtx->eSliceType == I_SLICE) { if (0 == pWelsSvcRc->iIdrNum) { //iIdrNum == 0 means encoder has been initialed RcInitRefreshParameter (pEncCtx); } } if (RcJudgeBitrateFpsUpdate (pEncCtx)) { RcUpdateBitrateFps (pEncCtx); } if (pEncCtx->uiTemporalId == 0) { RcUpdateTemporalZero (pEncCtx); } RcDecideTargetBits (pEncCtx); //decide globe_qp if (pEncCtx->eSliceType == I_SLICE) { if (0 == pWelsSvcRc->iIdrNum) RcInitIdrQp (pEncCtx); else { RcCalculateIdrQp (pEncCtx); } } else { RcCalculatePictureQp (pEncCtx); } RcInitSliceInformation (pEncCtx); RcInitGomParameters (pEncCtx); } void WelsRcPictureInfoUpdateGom (sWelsEncCtx* pEncCtx, int32_t iLayerSize) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; int32_t iCodedBits = (iLayerSize << 3); RcUpdatePictureQpBits (pEncCtx, iCodedBits); if (pEncCtx->eSliceType == P_SLICE) { RcUpdateFrameComplexity (pEncCtx); } else { RcUpdateIntraComplexity (pEncCtx); } pWelsSvcRc->iRemainingBits -= pWelsSvcRc->iFrameDqBits; if (pEncCtx->pSvcParam->bEnableFrameSkip /*&& pEncCtx->uiDependencyId == pEncCtx->pSvcParam->iSpatialLayerNum - 1*/) { RcVBufferCalculationSkip (pEncCtx); } if (pEncCtx->pSvcParam->iPaddingFlag) RcVBufferCalculationPadding (pEncCtx); pWelsSvcRc->iFrameCodedInVGop++; } void WelsRcMbInitGom (sWelsEncCtx* pEncCtx, SMB* pCurMb, SSlice* pSlice) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; const int32_t kiSliceId = pSlice->uiSliceIdx; SRCSlicing* pSOverRc = &pWelsSvcRc->pSlicingOverRc[kiSliceId]; SBitStringAux* bs = pSlice->pSliceBsa; SDqLayer* pCurLayer = pEncCtx->pCurDqLayer; const uint8_t kuiChromaQpIndexOffset = pCurLayer->sLayerInfo.pPpsP->uiChromaQpIndexOffset; pSOverRc->iBsPosSlice = BsGetBitsPos (bs); if (pEncCtx->eSliceType == I_SLICE) { pCurMb->uiLumaQp = pEncCtx->iGlobalQp; pCurMb->uiChromaQp = g_kuiChromaQpTable[CLIP3_QP_0_51 (pCurMb->uiLumaQp + kuiChromaQpIndexOffset)]; return; } //calculate gom qp and target bits at the beginning of gom if (0 == (pCurMb->iMbXY % pWelsSvcRc->iNumberMbGom)) { if (pCurMb->iMbXY != pSOverRc->iStartMbSlice) { pSOverRc->iComplexityIndexSlice++; RcCalculateGomQp (pEncCtx, pCurMb, kiSliceId); } RcGomTargetBits (pEncCtx, kiSliceId); } RcCalculateMbQp (pEncCtx, pCurMb, kiSliceId); } void WelsRcMbInfoUpdateGom (sWelsEncCtx* pEncCtx, SMB* pCurMb, int32_t iCostLuma, SSlice* pSlice) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SBitStringAux* bs = pSlice->pSliceBsa; int32_t iSliceId = pSlice->uiSliceIdx; SRCSlicing* pSOverRc = &pWelsSvcRc->pSlicingOverRc[iSliceId]; const int32_t kiComplexityIndex = pSOverRc->iComplexityIndexSlice; int32_t iCurMbBits = BsGetBitsPos (bs) - pSOverRc->iBsPosSlice; pSOverRc->iFrameBitsSlice += iCurMbBits; pSOverRc->iGomBitsSlice += iCurMbBits; pWelsSvcRc->pGomCost[kiComplexityIndex] += iCostLuma; pWelsSvcRc->iMinFrameQp = WELS_MIN (pWelsSvcRc->iMinFrameQp, pCurMb->uiLumaQp); pWelsSvcRc->iMaxFrameQp = WELS_MAX (pWelsSvcRc->iMaxFrameQp, pCurMb->uiLumaQp); if (iCurMbBits > 0) { pSOverRc->iTotalQpSlice += pCurMb->uiLumaQp; pSOverRc->iTotalMbSlice++; } } void WelsRcPictureInitDisable (sWelsEncCtx* pEncCtx, long long uiTimeStamp) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SSpatialLayerConfig* pDLayerParam = &pEncCtx->pSvcParam->sSpatialLayers[pEncCtx->uiDependencyId]; const int32_t kiQp = pDLayerParam->iDLayerQp; pEncCtx->iGlobalQp = RcCalculateCascadingQp (pEncCtx, kiQp); if (pEncCtx->pSvcParam->bEnableAdaptiveQuant && (pEncCtx->eSliceType == P_SLICE)) { pEncCtx->iGlobalQp = WELS_CLIP3 ((pEncCtx->iGlobalQp * INT_MULTIPLY - pEncCtx->pVaa->sAdaptiveQuantParam.iAverMotionTextureIndexToDeltaQp) / INT_MULTIPLY, pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); } else { pEncCtx->iGlobalQp = WELS_CLIP3 (pEncCtx->iGlobalQp, 0, 51); } pWelsSvcRc->iAverageFrameQp = pEncCtx->iGlobalQp; } void WelsRcPictureInfoUpdateDisable (sWelsEncCtx* pEncCtx, int32_t iLayerSize) { } void WelsRcMbInitDisable (sWelsEncCtx* pEncCtx, SMB* pCurMb, SSlice* pSlice) { int32_t iLumaQp = pEncCtx->iGlobalQp; SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SDqLayer* pCurLayer = pEncCtx->pCurDqLayer; const uint8_t kuiChromaQpIndexOffset = pCurLayer->sLayerInfo.pPpsP->uiChromaQpIndexOffset; if (pEncCtx->pSvcParam->bEnableAdaptiveQuant && (pEncCtx->eSliceType == P_SLICE)) { iLumaQp = (int8_t)WELS_CLIP3 (iLumaQp + pEncCtx->pVaa->sAdaptiveQuantParam.pMotionTextureIndexToDeltaQp[pCurMb->iMbXY], pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); } else { iLumaQp = WELS_CLIP3 (iLumaQp, 0, 51); } pCurMb->uiChromaQp = g_kuiChromaQpTable[CLIP3_QP_0_51 (iLumaQp + kuiChromaQpIndexOffset)]; pCurMb->uiLumaQp = iLumaQp; } void WelsRcMbInfoUpdateDisable (sWelsEncCtx* pEncCtx, SMB* pCurMb, int32_t iCostLuma, SSlice* pSlice) { } void WelRcPictureInitBufferBasedQp (sWelsEncCtx* pEncCtx, long long uiTimeStamp) { SVAAFrameInfo* pVaa = static_cast<SVAAFrameInfo*> (pEncCtx->pVaa); SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; int32_t iMinQp = MIN_SCREEN_QP; if (pVaa->eSceneChangeIdc == LARGE_CHANGED_SCENE) iMinQp = MIN_SCREEN_QP + 2; else if (pVaa->eSceneChangeIdc == MEDIUM_CHANGED_SCENE) iMinQp = MIN_SCREEN_QP + 1; else iMinQp = MIN_SCREEN_QP; if (pEncCtx->bDeliveryFlag) pEncCtx->iGlobalQp -= 1; else pEncCtx->iGlobalQp += 2; pEncCtx->iGlobalQp = WELS_CLIP3 (pEncCtx->iGlobalQp, iMinQp, pWelsSvcRc->iMaxQp); } void WelRcPictureInitScc (sWelsEncCtx* pEncCtx, long long uiTimeStamp) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SVAAFrameInfoExt* pVaa = static_cast<SVAAFrameInfoExt*> (pEncCtx->pVaa); SSpatialLayerConfig* pDLayerConfig = &pEncCtx->pSvcParam->sSpatialLayers[pEncCtx->uiDependencyId]; SSpatialLayerInternal* pDLayerParamInternal = &pEncCtx->pSvcParam->sDependencyLayers[pEncCtx->uiDependencyId]; int64_t iFrameCplx = pVaa->sComplexityScreenParam.iFrameComplexity; int32_t iBitRate = pDLayerConfig->iSpatialBitrate;// pEncCtx->pSvcParam->target_bitrate; int32_t iBaseQp = pWelsSvcRc->iBaseQp; pEncCtx->iGlobalQp = iBaseQp; int32_t iDeltaQp = 0; if (pEncCtx->eSliceType == I_SLICE) { int64_t iTargetBits = iBitRate * 2 - pWelsSvcRc->iBufferFullnessSkip; iTargetBits = WELS_MAX (1, iTargetBits); int32_t iQstep = WELS_DIV_ROUND (iFrameCplx * pWelsSvcRc->iCost2BitsIntra, iTargetBits); int32_t iQp = RcConvertQStep2Qp (iQstep); pEncCtx->iGlobalQp = WELS_CLIP3 (iQp, pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); } else { int64_t iTargetBits = WELS_ROUND (((float)iBitRate / pDLayerParamInternal->fOutputFrameRate)); //iBitRate / 10; int32_t iQstep = WELS_DIV_ROUND (iFrameCplx * pWelsSvcRc->iAvgCost2Bits, iTargetBits); int32_t iQp = RcConvertQStep2Qp (iQstep); iDeltaQp = iQp - iBaseQp; if (pWelsSvcRc->iBufferFullnessSkip > iBitRate) { if (iDeltaQp > 0) { ++iBaseQp; } } else if (pWelsSvcRc->iBufferFullnessSkip == 0) { if (iDeltaQp < 0) { --iBaseQp; } } if (iDeltaQp >= 6) { iBaseQp += 3; } else if ((iDeltaQp <= -6)) { --iBaseQp; } iBaseQp = WELS_CLIP3 (iBaseQp, pWelsSvcRc->iMinQp, pWelsSvcRc->iMinQp); pEncCtx->iGlobalQp = iBaseQp; if (iDeltaQp < -6) { pEncCtx->iGlobalQp = WELS_CLIP3 (pWelsSvcRc->iBaseQp - 6, pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); } if (iDeltaQp > 5) { if (LARGE_CHANGED_SCENE == pEncCtx->pVaa->eSceneChangeIdc || pWelsSvcRc->iBufferFullnessSkip > 2 * iBitRate || iDeltaQp > 10) { pEncCtx->iGlobalQp = WELS_CLIP3 (pWelsSvcRc->iBaseQp + iDeltaQp, pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); } else if (MEDIUM_CHANGED_SCENE == pEncCtx->pVaa->eSceneChangeIdc || pWelsSvcRc->iBufferFullnessSkip > iBitRate) { pEncCtx->iGlobalQp = WELS_CLIP3 (pWelsSvcRc->iBaseQp + 5, pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); } } pWelsSvcRc->iBaseQp = iBaseQp; } pWelsSvcRc->iAverageFrameQp = pEncCtx->iGlobalQp; WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "WelRcPictureInitScc iLumaQp = %d\n", pEncCtx->iGlobalQp); pWelsSvcRc->uiLastTimeStamp = uiTimeStamp; } void WelsRcDropFrameUpdate (sWelsEncCtx* pEncCtx, uint32_t iDropSize) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[0]; pWelsSvcRc->iBufferFullnessSkip -= (int32_t)iDropSize; pWelsSvcRc->iBufferFullnessSkip = WELS_MAX (0, pWelsSvcRc->iBufferFullnessSkip); WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "[WelsRcDropFrameUpdate:\tdrop:%d\t%" PRId64 "\n", iDropSize, pWelsSvcRc->iBufferFullnessSkip); } void WelsRcPictureInfoUpdateScc (sWelsEncCtx* pEncCtx, int32_t iNalSize) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; int32_t iFrameBits = (iNalSize << 3); pWelsSvcRc->iBufferFullnessSkip += iFrameBits; SVAAFrameInfoExt* pVaa = static_cast<SVAAFrameInfoExt*> (pEncCtx->pVaa); int32_t iQstep = RcConvertQp2QStep (pEncCtx->iGlobalQp); int64_t iCost2Bits = WELS_DIV_ROUND64 ((((int64_t)iFrameBits * iQstep)), pVaa->sComplexityScreenParam.iFrameComplexity); if (pEncCtx->eSliceType == P_SLICE) { pWelsSvcRc->iAvgCost2Bits = WELS_DIV_ROUND64 ((95 * pWelsSvcRc->iAvgCost2Bits + 5 * iCost2Bits), INT_MULTIPLY); } else { pWelsSvcRc->iCost2BitsIntra = WELS_DIV_ROUND64 ((90 * pWelsSvcRc->iCost2BitsIntra + 10 * iCost2Bits), INT_MULTIPLY); } } void WelsRcMbInitScc (sWelsEncCtx* pEncCtx, SMB* pCurMb, SSlice* pSlice) { /* Get delta iQp of this MB */ pCurMb->uiLumaQp = pEncCtx->iGlobalQp; pCurMb->uiChromaQp = g_kuiChromaQpTable[WELS_CLIP3 (pCurMb->uiLumaQp + pEncCtx->pPps->uiChromaQpIndexOffset, 0, 51)]; } void InitRcModuleTimeStamp (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; pWelsSvcRc->iBaseQp = 30; pWelsSvcRc->iBufferFullnessSkip = 0; pWelsSvcRc->uiLastTimeStamp = 0; pWelsSvcRc->iCost2BitsIntra = 1; pWelsSvcRc->iAvgCost2Bits = 1; pWelsSvcRc->iSkipBufferRatio = SKIP_RATIO; } void WelsRcFrameDelayJudgeTimeStamp (sWelsEncCtx* pEncCtx, EVideoFrameType eFrameType, long long uiTimeStamp) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SSpatialLayerConfig* pDLayerConfig = &pEncCtx->pSvcParam->sSpatialLayers[pEncCtx->uiDependencyId]; if (pDLayerConfig->iSpatialBitrate > pDLayerConfig->iMaxSpatialBitrate) pDLayerConfig->iSpatialBitrate = pDLayerConfig->iMaxSpatialBitrate; int32_t iBitRate = pDLayerConfig->iSpatialBitrate; int32_t iEncTimeInv = (pWelsSvcRc->uiLastTimeStamp == 0) ? 0 : (int32_t) (uiTimeStamp - pWelsSvcRc->uiLastTimeStamp); int32_t iSentBits = (int32_t) ((double)iBitRate * iEncTimeInv * (1.0E-3) + 0.5); iSentBits = WELS_MAX (iSentBits, 0); //When bitrate is changed, pBuffer size should be updated pWelsSvcRc->iBufferSizeSkip = WELS_DIV_ROUND (pDLayerConfig->iSpatialBitrate * pWelsSvcRc->iSkipBufferRatio, INT_MULTIPLY); pWelsSvcRc->iBufferSizePadding = WELS_DIV_ROUND (pDLayerConfig->iSpatialBitrate * PADDING_BUFFER_RATIO, INT_MULTIPLY); pWelsSvcRc->iBufferFullnessSkip -= iSentBits; pWelsSvcRc->iBufferFullnessSkip = WELS_MAX (0, pWelsSvcRc->iBufferFullnessSkip); if (pEncCtx->pSvcParam->bEnableFrameSkip) { pWelsSvcRc->bSkipFlag = true; if (pWelsSvcRc->iBufferFullnessSkip < pWelsSvcRc->iBufferSizeSkip) { pWelsSvcRc->bSkipFlag = false; } if (pWelsSvcRc->bSkipFlag) { pWelsSvcRc->iSkipFrameNum++; pWelsSvcRc->uiLastTimeStamp = uiTimeStamp; } } WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "WelsRcFrameDelayJudgeTimeStamp iSkipFrameNum = %d,buffer = %" PRId64 ",threadhold = %d,bitrate = %d,iSentBits = %d,lasttimestamp = %lld,timestamp=%lld\n", pWelsSvcRc->iSkipFrameNum, pWelsSvcRc->iBufferFullnessSkip, pWelsSvcRc->iBufferSizeSkip, iBitRate, iSentBits, pWelsSvcRc->uiLastTimeStamp, uiTimeStamp); } void WelsRcPictureInitGomTimeStamp (sWelsEncCtx* pEncCtx, long long uiTimeStamp) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; SSpatialLayerConfig* pDLayerParam = &pEncCtx->pSvcParam->sSpatialLayers[pEncCtx->uiDependencyId]; int32_t iLumaQp = pWelsSvcRc->iLastCalculatedQScale; //decide one frame bits allocated if (pEncCtx->eSliceType == I_SLICE) { if (0 == pWelsSvcRc->iIdrNum) { //iIdrNum == 0 means encoder has been initialed RcInitRefreshParameter (pEncCtx); RcInitIdrQp (pEncCtx); iLumaQp = pWelsSvcRc->iInitialQp; pWelsSvcRc->iTargetBits = static_cast<int32_t> (((double) (pDLayerParam->iSpatialBitrate) / (double) ( pDLayerParam->fFrameRate) * IDR_BITRATE_RATIO)); WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "[Rc] First IDR iSpatialBitrate = %d,iBufferFullnessSkip = %" PRId64 ",iTargetBits= %d,initQp = %d", pDLayerParam->iSpatialBitrate, pWelsSvcRc->iBufferFullnessSkip, pWelsSvcRc->iTargetBits, pWelsSvcRc->iInitialQp); } else { int32_t iMaxTh = static_cast<int32_t> (pWelsSvcRc->iBufferSizeSkip - pWelsSvcRc->iBufferFullnessSkip); int32_t iMinTh = iMaxTh / 2; pWelsSvcRc->iTargetBits = static_cast<int32_t> (((double) (pDLayerParam->iSpatialBitrate) / (double) ( pDLayerParam->fFrameRate) * IDR_BITRATE_RATIO)); if (iMaxTh > 0) { pWelsSvcRc->iTargetBits = WELS_CLIP3 (pWelsSvcRc->iTargetBits, iMinTh, iMaxTh); pWelsSvcRc->iQStep = WELS_DIV_ROUND (pWelsSvcRc->iIntraComplexity, pWelsSvcRc->iTargetBits); iLumaQp = RcConvertQStep2Qp (pWelsSvcRc->iQStep); iLumaQp = WELS_CLIP3 (iLumaQp, pWelsSvcRc->iLastCalculatedQScale - DELTA_QP_BGD_THD, pWelsSvcRc->iLastCalculatedQScale + DELTA_QP_BGD_THD); } else { iLumaQp = pWelsSvcRc->iLastCalculatedQScale + DELTA_QP_BGD_THD; } iLumaQp = WELS_CLIP3 (iLumaQp, pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "[Rc]I iLumaQp = %d,iQStep = %d,iTargetBits = %d,iBufferFullnessSkip =%" PRId64 ",iMaxTh=%d,iMinTh = %d,iFrameComplexity= %" PRId64, iLumaQp, pWelsSvcRc->iQStep, pWelsSvcRc->iTargetBits, pWelsSvcRc->iBufferFullnessSkip, iMaxTh, iMinTh, pWelsSvcRc->iIntraComplexity); } } else { int32_t iTl = pEncCtx->uiTemporalId; SRCTemporal* pTOverRc = &pWelsSvcRc->pTemporalOverRc[iTl]; int32_t iMaxTh = static_cast<int32_t> (pWelsSvcRc->iBufferSizeSkip - pWelsSvcRc->iBufferFullnessSkip); int32_t iMinTh = iMaxTh / (iTl + 2); SSpatialLayerInternal* pDLayerParamInternal = &pEncCtx->pSvcParam->sDependencyLayers[pEncCtx->uiDependencyId]; const int32_t kiGopSize = (1 << pDLayerParamInternal->iDecompositionStages); int32_t iAverageFrameSize = (int32_t) ((double) (pDLayerParam->iSpatialBitrate) / (double) (pDLayerParam->fFrameRate)); const int32_t kiGopBits = iAverageFrameSize * kiGopSize; int64_t iCmplxRatio = WELS_DIV_ROUND64 (pEncCtx->pVaa->sComplexityAnalysisParam.iFrameComplexity * INT_MULTIPLY, pTOverRc->iFrameCmplxMean); iCmplxRatio = WELS_CLIP3 (iCmplxRatio, INT_MULTIPLY - FRAME_CMPLX_RATIO_RANGE, INT_MULTIPLY + FRAME_CMPLX_RATIO_RANGE); pWelsSvcRc->iTargetBits = WELS_DIV_ROUND (pTOverRc->iTlayerWeight * kiGopBits, INT_MULTIPLY * 10 * 2); if (iMaxTh > 0) { pWelsSvcRc->iTargetBits = WELS_CLIP3 (pWelsSvcRc->iTargetBits, iMinTh, iMaxTh); if (0 == pTOverRc->iPFrameNum) iLumaQp = pWelsSvcRc->iInitialQp + DELTA_QP_BGD_THD; else { pWelsSvcRc->iQStep = WELS_DIV_ROUND ((pTOverRc->iLinearCmplx * iCmplxRatio), (pWelsSvcRc->iTargetBits * INT_MULTIPLY)); iLumaQp = RcConvertQStep2Qp (pWelsSvcRc->iQStep); iLumaQp = WELS_CLIP3 (iLumaQp, pWelsSvcRc->iLastCalculatedQScale - DELTA_QP_BGD_THD, pWelsSvcRc->iLastCalculatedQScale + DELTA_QP_BGD_THD); } } else { iLumaQp = pWelsSvcRc->iLastCalculatedQScale + DELTA_QP_BGD_THD; } iLumaQp = WELS_CLIP3 (iLumaQp, pWelsSvcRc->iMinQp, pWelsSvcRc->iMaxQp); WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "[Rc]P iTl = %d,iLumaQp = %d,iQStep = %d,iTargetBits = %d,iBufferFullnessSkip =%" PRId64 ",iMaxTh=%d,iMinTh = %d,iFrameComplexity= %lld,iCmplxRatio=%" PRId64, iTl, iLumaQp, pWelsSvcRc->iQStep, pWelsSvcRc->iTargetBits, pWelsSvcRc->iBufferFullnessSkip, iMaxTh, iMinTh, pEncCtx->pVaa->sComplexityAnalysisParam.iFrameComplexity, iCmplxRatio); } pWelsSvcRc->iQStep = RcConvertQp2QStep (iLumaQp); pWelsSvcRc->iLastCalculatedQScale = iLumaQp; pEncCtx->iGlobalQp = iLumaQp; RcInitSliceInformation (pEncCtx); RcInitGomParameters (pEncCtx); float fInstantFps = (uiTimeStamp - pWelsSvcRc->uiLastTimeStamp) > 0 ? (1000.0f / (uiTimeStamp - pWelsSvcRc->uiLastTimeStamp)) : 0; WelsLog (& (pEncCtx->sLogCtx), WELS_LOG_DEBUG, "[Rc]Tid = %d,Did = %d,pEncCtx->iGlobalQp= %d,iLumaQp = %d,uiTimeStamp = %lld,uiLastTimeStamp = %lld,InstantFps = %f,settingFps = %f", pEncCtx->uiTemporalId, pEncCtx->uiDependencyId, pEncCtx->iGlobalQp, iLumaQp, uiTimeStamp, pWelsSvcRc->uiLastTimeStamp, fInstantFps, pDLayerParam->fFrameRate); pWelsSvcRc->uiLastTimeStamp = uiTimeStamp; } void WelsRcPictureInfoUpdateGomTimeStamp (sWelsEncCtx* pEncCtx, int32_t iLayerSize) { SWelsSvcRc* pWelsSvcRc = &pEncCtx->pWelsSvcRc[pEncCtx->uiDependencyId]; int32_t iCodedBits = (iLayerSize << 3); RcUpdatePictureQpBits (pEncCtx, iCodedBits); if (pEncCtx->eSliceType == P_SLICE) { RcUpdateFrameComplexity (pEncCtx); } else { RcUpdateIntraComplexity (pEncCtx); } pWelsSvcRc->iRemainingBits -= pWelsSvcRc->iFrameDqBits; //condition 1: whole pBuffer fullness pWelsSvcRc->iBufferFullnessSkip += pWelsSvcRc->iFrameDqBits; if (pEncCtx->pSvcParam->iPaddingFlag) RcVBufferCalculationPadding (pEncCtx); pWelsSvcRc->iFrameCodedInVGop++; } void WelsRcInitFuncPointers (sWelsEncCtx* pEncCtx, RC_MODES iRcMode) { SWelsRcFunc* pRcf = &pEncCtx->pFuncList->pfRc; switch (iRcMode) { case RC_OFF_MODE: pRcf->pfWelsRcPictureInit = WelsRcPictureInitDisable; pRcf->pfWelsRcPicDelayJudge = NULL; pRcf->pfWelsRcPictureInfoUpdate = WelsRcPictureInfoUpdateDisable; pRcf->pfWelsRcMbInit = WelsRcMbInitDisable; pRcf->pfWelsRcMbInfoUpdate = WelsRcMbInfoUpdateDisable; pRcf->pfWelsCheckSkipBasedMaxbr = NULL; pRcf->pfWelsUpdateBufferWhenSkip = NULL; pRcf->pfWelsUpdateMaxBrWindowStatus = NULL; pRcf->pfWelsRcPostFrameSkipping = NULL; break; case RC_BUFFERBASED_MODE: pRcf->pfWelsRcPictureInit = WelRcPictureInitBufferBasedQp; pRcf->pfWelsRcPicDelayJudge = NULL; pRcf->pfWelsRcPictureInfoUpdate = WelsRcPictureInfoUpdateDisable; pRcf->pfWelsRcMbInit = WelsRcMbInitDisable; pRcf->pfWelsRcMbInfoUpdate = WelsRcMbInfoUpdateDisable; pRcf->pfWelsCheckSkipBasedMaxbr = NULL; pRcf->pfWelsUpdateBufferWhenSkip = NULL; pRcf->pfWelsUpdateMaxBrWindowStatus = NULL; pRcf->pfWelsRcPostFrameSkipping = NULL; break; case RC_BITRATE_MODE: pRcf->pfWelsRcPictureInit = WelsRcPictureInitGom; pRcf->pfWelsRcPicDelayJudge = WelsRcFrameDelayJudge; pRcf->pfWelsRcPictureInfoUpdate = WelsRcPictureInfoUpdateGom; pRcf->pfWelsRcMbInit = WelsRcMbInitGom; pRcf->pfWelsRcMbInfoUpdate = WelsRcMbInfoUpdateGom; pRcf->pfWelsCheckSkipBasedMaxbr = CheckFrameSkipBasedMaxbr; pRcf->pfWelsUpdateBufferWhenSkip = UpdateBufferWhenFrameSkipped; pRcf->pfWelsUpdateMaxBrWindowStatus = UpdateMaxBrCheckWindowStatus; pRcf->pfWelsRcPostFrameSkipping = WelsRcPostFrameSkipping; break; case RC_BITRATE_MODE_POST_SKIP: pRcf->pfWelsRcPictureInit = WelsRcPictureInitGom; pRcf->pfWelsRcPicDelayJudge = WelsRcFrameDelayJudge; pRcf->pfWelsRcPictureInfoUpdate = WelsRcPictureInfoUpdateGom; pRcf->pfWelsRcMbInit = WelsRcMbInitGom; pRcf->pfWelsRcMbInfoUpdate = WelsRcMbInfoUpdateGom; pRcf->pfWelsCheckSkipBasedMaxbr = CheckFrameSkipBasedMaxbr; pRcf->pfWelsUpdateBufferWhenSkip = UpdateBufferWhenFrameSkipped; pRcf->pfWelsUpdateMaxBrWindowStatus = UpdateMaxBrCheckWindowStatus; pRcf->pfWelsRcPostFrameSkipping = WelsRcPostFrameSkipping; break; case RC_TIMESTAMP_MODE: if (pEncCtx->pSvcParam->iUsageType == SCREEN_CONTENT_REAL_TIME) { pRcf->pfWelsRcPictureInit = WelRcPictureInitScc; pRcf->pfWelsRcPictureInfoUpdate = WelsRcPictureInfoUpdateScc; pRcf->pfWelsRcMbInit = WelsRcMbInitScc; pRcf->pfWelsRcMbInfoUpdate = WelsRcMbInfoUpdateDisable; } else { pRcf->pfWelsRcPictureInit = WelsRcPictureInitGomTimeStamp; pRcf->pfWelsRcPictureInfoUpdate = WelsRcPictureInfoUpdateGomTimeStamp; pRcf->pfWelsRcMbInit = WelsRcMbInitGom; pRcf->pfWelsRcMbInfoUpdate = WelsRcMbInfoUpdateGom; } pRcf->pfWelsRcPicDelayJudge = WelsRcFrameDelayJudgeTimeStamp; pRcf->pfWelsCheckSkipBasedMaxbr = CheckFrameSkipBasedMaxbr; pRcf->pfWelsUpdateBufferWhenSkip = NULL; pRcf->pfWelsUpdateMaxBrWindowStatus = NULL; pRcf->pfWelsRcPostFrameSkipping = NULL; InitRcModuleTimeStamp (pEncCtx); break; case RC_QUALITY_MODE: default: pRcf->pfWelsRcPictureInit = WelsRcPictureInitGom; pRcf->pfWelsRcPicDelayJudge = WelsRcFrameDelayJudge; pRcf->pfWelsRcPictureInfoUpdate = WelsRcPictureInfoUpdateGom; pRcf->pfWelsRcMbInit = WelsRcMbInitGom; pRcf->pfWelsRcMbInfoUpdate = WelsRcMbInfoUpdateGom; pRcf->pfWelsCheckSkipBasedMaxbr = CheckFrameSkipBasedMaxbr; pRcf->pfWelsUpdateBufferWhenSkip = UpdateBufferWhenFrameSkipped; pRcf->pfWelsUpdateMaxBrWindowStatus = UpdateMaxBrCheckWindowStatus; pRcf->pfWelsRcPostFrameSkipping = NULL; break; } } void WelsRcInitModule (sWelsEncCtx* pEncCtx, RC_MODES iRcMode) { WelsRcInitFuncPointers (pEncCtx, iRcMode); RcInitSequenceParameter (pEncCtx); } void WelsRcFreeMemory (sWelsEncCtx* pEncCtx) { SWelsSvcRc* pWelsSvcRc = NULL; int32_t i = 0; for (i = 0; i < pEncCtx->pSvcParam->iSpatialLayerNum; i++) { pWelsSvcRc = &pEncCtx->pWelsSvcRc[i]; RcFreeLayerMemory (pWelsSvcRc, pEncCtx->pMemAlign); } } }//end of namespace