ref: bd8d97dddbb2a86e506d060788cd662ded2a2aa4
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 SVC Spatial Enhancement Layer MD
*
* \date 2009.7.29
*
**************************************************************************************
*/
#include "svc_base_layer_md.h"
#include "svc_mode_decision.h"
namespace WelsSVCEnc {
//
// md in enhancement layer
///
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
}
//////////////////////////
//
//SUPPORTING FUNCS
//
//////////////////////////
///////////////////////
// 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;
}
}
} // namespace WelsSVCEnc