ref: 057e38663fa8e2784f095ae68ded945697f0e11a
dir: /codec/encoder/core/src/svc_mode_decision.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.
*
*
* \file svc_mode_decision.c
*
* \brief Algorithmetic MD for:
* - multi-spatial Enhancement Layer MD;
* - Scrolling PSkip Decision for screen content
*
* \date 2009.7.29
*
**************************************************************************************
*/
#include "mv_pred.h"
#include "ls_defines.h"
#include "svc_base_layer_md.h"
#include "svc_mode_decision.h"
namespace WelsSVCEnc {
//
// md in enhancement layer
///
inline bool IsMbStatic (int32_t* pBlockType, EStaticBlockIdc eType) {
return (pBlockType != NULL &&
eType == pBlockType[0] &&
eType == pBlockType[1] &&
eType == pBlockType[2] &&
eType == pBlockType[3]);
}
inline bool IsMbCollocatedStatic (int32_t* pBlockType) {
return IsMbStatic (pBlockType, COLLOCATED_STATIC);
}
inline bool IsMbScrolledStatic (int32_t* pBlockType) {
return IsMbStatic (pBlockType, SCROLLED_STATIC);
}
inline int32_t CalUVSadCost (SWelsFuncPtrList* pFunc, uint8_t* pEncOri, int32_t iStrideUV, uint8_t* pRefOri,
int32_t iRefLineSize) {
return pFunc->sSampleDealingFuncs.pfSampleSad[BLOCK_8x8] (pEncOri, iStrideUV, pRefOri, iRefLineSize);
}
inline bool CheckBorder (int32_t iMbX, int32_t iMbY, int32_t iScrollMvX, int32_t iScrollMvY, int32_t iMbWidth,
int32_t iMbHeight) {
return ((iMbX << 4) + iScrollMvX < 0 ||
(iMbX << 4) + iScrollMvX > (iMbWidth - 1) << 4 ||
(iMbY << 4) + iScrollMvY < 0 ||
(iMbY << 4) + iScrollMvY > (iMbHeight - 1) << 4
); //border check for safety
}
void WelsMdSpatialelInterMbIlfmdNoilp (sWelsEncCtx* pEncCtx, SWelsMD* pWelsMd, SSlice* pSlice,
SMB* pCurMb, const Mb_Type kuiRefMbType) {
SDqLayer* pCurDqLayer = pEncCtx->pCurDqLayer;
SMbCache* pMbCache = &pSlice->sMbCacheInfo;
const uint32_t kuiNeighborAvail = pCurMb->uiNeighborAvail;
const int32_t kiMbWidth = pCurDqLayer->iMbWidth;
const SMB* kpTopMb = pCurMb - kiMbWidth;
const bool kbMbLeftAvailPskip = ((kuiNeighborAvail & LEFT_MB_POS) ? IS_SKIP ((pCurMb - 1)->uiMbType) : false);
const bool kbMbTopAvailPskip = ((kuiNeighborAvail & TOP_MB_POS) ? IS_SKIP (kpTopMb->uiMbType) : false);
const bool kbMbTopLeftAvailPskip = ((kuiNeighborAvail & TOPLEFT_MB_POS) ? IS_SKIP ((kpTopMb - 1)->uiMbType) : false);
const bool kbMbTopRightAvailPskip = ((kuiNeighborAvail & TOPRIGHT_MB_POS) ? IS_SKIP ((
kpTopMb + 1)->uiMbType) : false);
bool bTrySkip = kbMbLeftAvailPskip | kbMbTopAvailPskip | kbMbTopLeftAvailPskip | kbMbTopRightAvailPskip;
bool bKeepSkip = kbMbLeftAvailPskip & kbMbTopAvailPskip & kbMbTopRightAvailPskip;
bool bSkip = false;
if (pEncCtx->pFuncList->pfInterMdBackgroundDecision (pEncCtx, pWelsMd, pSlice, pCurMb, pMbCache, &bKeepSkip)) {
return;
}
//step 1: try SKIP
bSkip = WelsMdInterJudgePskip (pEncCtx, pWelsMd, pSlice, pCurMb, pMbCache, bTrySkip);
if (bSkip && bKeepSkip) {
WelsMdInterDecidedPskip (pEncCtx, pSlice, pCurMb, pMbCache);
return;
}
if (! IS_SVC_INTRA (kuiRefMbType)) {
if (!bSkip) {
PredictSad (pMbCache->sMvComponents.iRefIndexCache, pMbCache->iSadCost, 0, &pWelsMd->iSadPredMb);
//step 2: P_16x16
pWelsMd->iCostLuma = WelsMdP16x16 (pEncCtx->pFuncList, pCurDqLayer, pWelsMd, pSlice, pCurMb);
pCurMb->uiMbType = MB_TYPE_16x16;
}
WelsMdInterSecondaryModesEnc (pEncCtx, pWelsMd, pSlice, pCurMb, pMbCache, bSkip);
} else { //BLMODE == SVC_INTRA
//initial prediction memory for I_16x16
const int32_t kiCostI16x16 = WelsMdI16x16 (pEncCtx->pFuncList, pEncCtx->pCurDqLayer, pMbCache, pWelsMd->iLambda);
if (bSkip && (pWelsMd->iCostLuma <= kiCostI16x16)) {
WelsMdInterDecidedPskip (pEncCtx, pSlice, pCurMb, pMbCache);
} else {
pWelsMd->iCostLuma = kiCostI16x16;
pCurMb->uiMbType = MB_TYPE_INTRA16x16;
WelsMdIntraSecondaryModesEnc (pEncCtx, pWelsMd, pCurMb, pMbCache);
}
}
}
void WelsMdInterMbEnhancelayer (void* pEnc, void* pMd, SSlice* pSlice, SMB* pCurMb, SMbCache* pMbCache) {
sWelsEncCtx* pEncCtx = (sWelsEncCtx*)pEnc;
SDqLayer* pCurLayer = pEncCtx->pCurDqLayer;
SWelsMD* pWelsMd = (SWelsMD*)pMd;
const SMB* kpInterLayerRefMb = GetRefMb (pCurLayer, pCurMb);
const Mb_Type kuiInterLayerRefMbType = kpInterLayerRefMb->uiMbType;
SetMvBaseEnhancelayer (pWelsMd, pCurMb,
kpInterLayerRefMb); // initial sMvBase here only when pRef mb type is inter, if not sMvBase will be not used!
//step (3): do the MD process
WelsMdSpatialelInterMbIlfmdNoilp (pEncCtx, pWelsMd, pSlice, pCurMb, kuiInterLayerRefMbType); //MD process
}
///////////////////////
// do initiation for noILP (needed by ILFMD)
////////////////////////
SMB* GetRefMb (SDqLayer* pCurLayer, SMB* pCurMb) {
const SDqLayer* kpRefLayer = pCurLayer->pRefLayer;
const int32_t kiRefMbIdx = (pCurMb->iMbY >> 1) * kpRefLayer->iMbWidth + (pCurMb->iMbX >>
1); //because current lower layer is half size on both vertical and horizontal
return (&kpRefLayer->sMbDataP[kiRefMbIdx]);
}
void SetMvBaseEnhancelayer (SWelsMD* pMd, SMB* pCurMb, const SMB* kpRefMb) {
const Mb_Type kuiRefMbType = kpRefMb->uiMbType;
if (! IS_SVC_INTRA (kuiRefMbType)) {
SMVUnitXY sMv;
int32_t iRefMbPartIdx = ((pCurMb->iMbY & 0x01) << 1) + (pCurMb->iMbX & 0x01); //may be need modified
int32_t iScan4RefPartIdx = g_kuiMbCountScan4Idx[ (iRefMbPartIdx << 2)];
sMv.iMvX = kpRefMb->sMv[iScan4RefPartIdx].iMvX << 1;
sMv.iMvY = kpRefMb->sMv[iScan4RefPartIdx].iMvY << 1;
pMd->sMe.sMe16x16.sMvBase = sMv;
pMd->sMe.sMe8x8[0].sMvBase =
pMd->sMe.sMe8x8[1].sMvBase =
pMd->sMe.sMe8x8[2].sMvBase =
pMd->sMe.sMe8x8[3].sMvBase = sMv;
pMd->sMe.sMe16x8[0].sMvBase =
pMd->sMe.sMe16x8[1].sMvBase =
pMd->sMe.sMe8x16[0].sMvBase =
pMd->sMe.sMe8x16[1].sMvBase = sMv;
}
}
bool JudgeStaticSkip (sWelsEncCtx* pEncCtx, SMB* pCurMb, SMbCache* pMbCache, SWelsMD* pWelsMd) {
SDqLayer* pCurDqLayer = pEncCtx->pCurDqLayer;
const int32_t kiMbX = pCurMb->iMbX;
const int32_t kiMbY = pCurMb->iMbY;
bool bTryStaticSkip = IsMbCollocatedStatic (pWelsMd->iBlock8x8StaticIdc);
if (bTryStaticSkip) {
int32_t iStrideUV, iOffsetUV;
SWelsFuncPtrList* pFunc = pEncCtx->pFuncList;
SPicture* pRefOri = pCurDqLayer->pRefOri[0];
if (pRefOri != NULL) {
iStrideUV = pCurDqLayer->iEncStride[1];
iOffsetUV = (kiMbX + kiMbY * iStrideUV) << 3;
int32_t iSadCostCb = CalUVSadCost (pFunc, pMbCache->SPicData.pEncMb[1], iStrideUV, pRefOri->pData[1] + iOffsetUV,
pRefOri->iLineSize[1]);
if (iSadCostCb == 0) {
int32_t iSadCostCr = CalUVSadCost (pFunc, pMbCache->SPicData.pEncMb[2], iStrideUV, pRefOri->pData[2] + iOffsetUV,
pRefOri->iLineSize[1]);
bTryStaticSkip = (0 == iSadCostCr);
} else bTryStaticSkip = false;
}
}
return bTryStaticSkip;
}
bool JudgeScrollSkip (sWelsEncCtx* pEncCtx, SMB* pCurMb, SMbCache* pMbCache, SWelsMD* pWelsMd) {
SDqLayer* pCurDqLayer = pEncCtx->pCurDqLayer;
const int32_t kiMbX = pCurMb->iMbX;
const int32_t kiMbY = pCurMb->iMbY;
const int32_t kiMbWidth = pCurDqLayer->iMbWidth;
const int32_t kiMbHeight = pCurDqLayer->iMbHeight;
// const int32_t block_width = mb_width << 1;
SVAAFrameInfoExt_t* pVaaExt = static_cast<SVAAFrameInfoExt_t*> (pEncCtx->pVaa);
bool bTryScrollSkip = false;
if (pVaaExt->sScrollDetectInfo.bScrollDetectFlag)
bTryScrollSkip = IsMbScrolledStatic (pWelsMd->iBlock8x8StaticIdc);
else return 0;
if (bTryScrollSkip) {
int32_t iStrideUV, iOffsetUV;
SWelsFuncPtrList* pFunc = pEncCtx->pFuncList;
SPicture* pRefOri = pCurDqLayer->pRefOri[0];
if (pRefOri != NULL) {
int32_t iScrollMvX = pVaaExt->sScrollDetectInfo.iScrollMvX;
int32_t iScrollMvY = pVaaExt->sScrollDetectInfo.iScrollMvY;
if (CheckBorder (kiMbX, kiMbY, iScrollMvX, iScrollMvY, kiMbWidth, kiMbHeight)) {
bTryScrollSkip = false;
} else {
iStrideUV = pCurDqLayer->iEncStride[1];
iOffsetUV = (kiMbX << 3) + (iScrollMvX >> 1) + ((kiMbY << 3) + (iScrollMvY >> 1)) * iStrideUV;
int32_t iSadCostCb = CalUVSadCost (pFunc, pMbCache->SPicData.pEncMb[1], iStrideUV, pRefOri->pData[1] + iOffsetUV,
pRefOri->iLineSize[1]);
if (iSadCostCb == 0) {
int32_t iSadCostCr = CalUVSadCost (pFunc, pMbCache->SPicData.pEncMb[2], iStrideUV, pRefOri->pData[2] + iOffsetUV,
pRefOri->iLineSize[1]);
bTryScrollSkip = (0 == iSadCostCr);
} else bTryScrollSkip = false;
}
}
}
return bTryScrollSkip;
}
void SvcMdSCDMbEnc (sWelsEncCtx* pEncCtx, SWelsMD* pWelsMd, SMB* pCurMb, SMbCache* pMbCache, SSlice* pSlice,
bool bQpSimilarFlag,
bool bMbSkipFlag, SMVUnitXY sCurMbMv[], ESkipModes eSkipMode) {
SDqLayer* pCurDqLayer = pEncCtx->pCurDqLayer;
SWelsFuncPtrList* pFunc = pEncCtx->pFuncList;
SMVUnitXY sMvp = { 0};
ST16 (&sMvp.iMvX, sCurMbMv[eSkipMode].iMvX);
ST16 (&sMvp.iMvY, sCurMbMv[eSkipMode].iMvY);
uint8_t* pRefLuma = pMbCache->SPicData.pRefMb[0];
uint8_t* pRefCb = pMbCache->SPicData.pRefMb[1];
uint8_t* pRefCr = pMbCache->SPicData.pRefMb[2];
int32_t iLineSizeY = pCurDqLayer->pRefPic->iLineSize[0];
int32_t iLineSizeUV = pCurDqLayer->pRefPic->iLineSize[1];
uint8_t* pDstLuma = pMbCache->pSkipMb;
uint8_t* pDstCb = pMbCache->pSkipMb + 256;
uint8_t* pDstCr = pMbCache->pSkipMb + 256 + 64;
const int32_t iOffsetY = (sCurMbMv[eSkipMode].iMvX >> 2) + (sCurMbMv[eSkipMode].iMvY >> 2) * iLineSizeY;
const int32_t iOffsetUV = (sCurMbMv[eSkipMode].iMvX >> 3) + (sCurMbMv[eSkipMode].iMvY >> 3) * iLineSizeUV;
if (!bQpSimilarFlag || !bMbSkipFlag) {
pDstLuma = pMbCache->pMemPredLuma;
pDstCb = pMbCache->pMemPredChroma;
pDstCr = pMbCache->pMemPredChroma + 64;
}
//MC
pFunc->sMcFuncs.pfLumaQuarpelMc[0] (pRefLuma + iOffsetY, iLineSizeY, pDstLuma, 16, 16);
pFunc->sMcFuncs.pfChromaMc (pRefCb + iOffsetUV, iLineSizeUV, pDstCb, 8, sMvp, 8, 8);
pFunc->sMcFuncs.pfChromaMc (pRefCr + iOffsetUV, iLineSizeUV, pDstCr, 8, sMvp, 8, 8);
pCurMb->uiCbp = 0;
pWelsMd->iCostLuma = 0;
pCurMb->pSadCost[0] = pFunc->sSampleDealingFuncs.pfSampleSad[BLOCK_16x16] (pMbCache->SPicData.pEncMb[0],
pCurDqLayer->iEncStride[0], pRefLuma + iOffsetY, iLineSizeY);
pWelsMd->iCostSkipMb = pCurMb->pSadCost[0];
ST16 (& (pCurMb->sP16x16Mv.iMvX), sCurMbMv[eSkipMode].iMvX);
ST16 (& (pCurMb->sP16x16Mv.iMvY), sCurMbMv[eSkipMode].iMvY);
ST16 (& (pCurDqLayer->pDecPic->sMvList[pCurMb->iMbXY].iMvX), sCurMbMv[eSkipMode].iMvX);
ST16 (& (pCurDqLayer->pDecPic->sMvList[pCurMb->iMbXY].iMvY), sCurMbMv[eSkipMode].iMvY);
if (bQpSimilarFlag && bMbSkipFlag) {
//update motion info to current MB
ST32 (pCurMb->pRefIndex, 0);
pFunc->pfUpdateMbMv (pCurMb->sMv, sMvp);
pCurMb->uiMbType = MB_TYPE_SKIP;
WelsRecPskip (pCurDqLayer, pEncCtx->pFuncList, pCurMb, pMbCache);
WelsMdInterUpdatePskip (pCurDqLayer, pSlice, pCurMb, pMbCache);
return;
}
pCurMb->uiMbType = MB_TYPE_16x16;
pWelsMd->sMe.sMe16x16.sMv.iMvX = sCurMbMv[eSkipMode].iMvX;
pWelsMd->sMe.sMe16x16.sMv.iMvY = sCurMbMv[eSkipMode].iMvY;
PredMv (&pMbCache->sMvComponents, 0, 4, 0, &pWelsMd->sMe.sMe16x16.sMvp);
pMbCache->sMbMvp[0] = pWelsMd->sMe.sMe16x16.sMvp;
UpdateP16x16MotionInfo (pMbCache, pCurMb, 0, &pWelsMd->sMe.sMe16x16.sMv);
if (pWelsMd->bMdUsingSad)
pWelsMd->iCostLuma = pCurMb->pSadCost[0];
else
pWelsMd->iCostLuma = pFunc->sSampleDealingFuncs.pfSampleSad[BLOCK_16x16] (pMbCache->SPicData.pEncMb[0],
pCurDqLayer->iEncStride[0], pRefLuma, iLineSizeY);
WelsInterMbEncode (pEncCtx, pSlice, pCurMb);
WelsPMbChromaEncode (pEncCtx, pSlice, pCurMb);
pFunc->pfCopy16x16Aligned (pMbCache->SPicData.pCsMb[0], pCurDqLayer->iCsStride[0], pMbCache->pMemPredLuma, 16);
pFunc->pfCopy8x8Aligned (pMbCache->SPicData.pCsMb[1], pCurDqLayer->iCsStride[1], pMbCache->pMemPredChroma, 8);
pFunc->pfCopy8x8Aligned (pMbCache->SPicData.pCsMb[2], pCurDqLayer->iCsStride[1], pMbCache->pMemPredChroma + 64, 8);
}
bool MdInterSCDPskipProcess (sWelsEncCtx* pEncCtx, SWelsMD* pWelsMd, SSlice* pSlice, SMB* pCurMb, SMbCache* pMbCache,
ESkipModes eSkipMode) {
SVAAFrameInfoExt_t* pVaaExt = static_cast<SVAAFrameInfoExt_t*> (pEncCtx->pVaa);
SDqLayer* pCurDqLayer = pEncCtx->pCurDqLayer;
const int32_t kiRefMbQp = pCurDqLayer->pRefPic->pRefMbQp[pCurMb->iMbXY];
const int32_t kiCurMbQp = pCurMb->uiLumaQp;// unsigned -> signed
pJudgeSkipFun pJudeSkip[2] = {JudgeStaticSkip, JudgeScrollSkip};
bool bSkipFlag = pJudeSkip[eSkipMode] (pEncCtx, pCurMb, pMbCache, pWelsMd);
if (bSkipFlag) {
bool bQpSimilarFlag = (kiRefMbQp - kiCurMbQp <= DELTA_QP_SCD_THD || kiRefMbQp <= 26);
SMVUnitXY sVaaPredSkipMv = {0,0}, sCurMbMv[2] = {{0,0},{0,0}};
PredSkipMv (pMbCache, &sVaaPredSkipMv);
if (eSkipMode == SCROLLED) {
sCurMbMv[1].iMvX = static_cast<int16_t> (pVaaExt->sScrollDetectInfo.iScrollMvX << 2);
sCurMbMv[1].iMvY = static_cast<int16_t> (pVaaExt->sScrollDetectInfo.iScrollMvY << 2);
}
bool bMbSkipFlag = (LD32 (&sVaaPredSkipMv) == LD32 (&sCurMbMv[eSkipMode])) ;
SvcMdSCDMbEnc (pEncCtx, pWelsMd, pCurMb, pMbCache, pSlice, bQpSimilarFlag, bMbSkipFlag, sCurMbMv, eSkipMode);
return true;
}
return false;
}
void SetBlockStaticIdcToMd (void* pVaa, void* pMd, SMB* pCurMb, void* pDqLay) {
SVAAFrameInfoExt_t* pVaaExt = static_cast<SVAAFrameInfoExt_t*> (pVaa);
SWelsMD* pWelsMd = static_cast<SWelsMD*> (pMd);
SDqLayer* pDqLayer = static_cast<SDqLayer*> (pDqLay);
const int32_t kiMbX = pCurMb->iMbX;
const int32_t kiMbY = pCurMb->iMbY;
const int32_t kiMbWidth = pDqLayer->iMbWidth;
const int32_t kiWidth = kiMbWidth << 1;
const int32_t kiBlockIndexUp = (kiMbY << 1) * kiWidth + (kiMbX << 1);
const int32_t kiBlockIndexLow = ((kiMbY << 1) + 1) * kiWidth + (kiMbX << 1);
//fill_blockstaticidc with pVaaExt->pVaaBestBlockStaticIdc
pWelsMd->iBlock8x8StaticIdc[0] = pVaaExt->pVaaBestBlockStaticIdc[kiBlockIndexUp];
pWelsMd->iBlock8x8StaticIdc[1] = pVaaExt->pVaaBestBlockStaticIdc[kiBlockIndexUp + 1];
pWelsMd->iBlock8x8StaticIdc[2] = pVaaExt->pVaaBestBlockStaticIdc[kiBlockIndexLow];
pWelsMd->iBlock8x8StaticIdc[3] = pVaaExt->pVaaBestBlockStaticIdc[kiBlockIndexLow + 1];
}
///////////////////////
// Scene Change Detection (SCD) PSkip Decision for screen content
////////////////////////
bool WelsMdInterJudgeSCDPskip (void* pCtx, void* pMd, SSlice* slice, SMB* pCurMb, SMbCache* pMbCache) {
sWelsEncCtx* pEncCtx = (sWelsEncCtx*)pCtx;
SWelsMD* pWelsMd = (SWelsMD*)pMd;
SDqLayer* pCurDqLayer = pEncCtx->pCurDqLayer;
SetBlockStaticIdcToMd (pEncCtx->pVaa, pWelsMd, pCurMb, pCurDqLayer);
//try static Pskip;
if (MdInterSCDPskipProcess (pEncCtx, pWelsMd, slice, pCurMb, pMbCache, STATIC)) {
return true;
}
//try scrolled Pskip
if (MdInterSCDPskipProcess (pEncCtx, pWelsMd, slice, pCurMb, pMbCache, SCROLLED)) {
return true;
}
return false;
}
bool WelsMdInterJudgeSCDPskipFalse (void* pEncCtx, void* pWelsMd, SSlice* slice, SMB* pCurMb, SMbCache* pMbCache) {
return false;
}
void WelsInitSCDPskipFunc (SWelsFuncPtrList* pFuncList, const bool bScrollingDetection) {
if (bScrollingDetection) {
pFuncList->pfSCDPSkipDecision = WelsMdInterJudgeSCDPskip;
} else {
pFuncList->pfSCDPSkipDecision = WelsMdInterJudgeSCDPskipFalse;
}
}
} // namespace WelsSVCEnc