ref: 734e60aeeb1c5500826ac4e4745898ddd8e96b9a
dir: /codec/encoder/core/src/svc_motion_estimate.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 motion estimate.c
*
* \brief Interfaces introduced in svc mb motion estimation
*
* \date 08/11/2009 Created
*
*************************************************************************************
*/
#include "svc_motion_estimate.h"
namespace WelsSVCEnc {
/*!
* \brief BL mb motion estimate search
*
* \param enc Wels encoder context
* \param pMe Wels me information
*
* \return NONE
*/
void WelsMotionEstimateSearchSatd (SWelsFuncPtrList* pFuncList, void* pLplayer, void* pLpme, void* pLpslice) {
SDqLayer* pCurDqLayer = (SDqLayer*)pLplayer;
SWelsME* pMe = (SWelsME*)pLpme;
SSlice* pSlice = (SSlice*)pLpslice;
int32_t iStrideEnc = pCurDqLayer->iEncStride[0];
int32_t iStrideRef = pCurDqLayer->pRefPic->iLineSize[0];
// Step 1: Initial point prediction
WelsMotionEstimateInitialPoint (pFuncList, pMe, pSlice, iStrideEnc, iStrideRef);
pMe->uSadPredISatd.uiSatd = pFuncList->sSampleDealingFuncs.pfSampleSatd[pMe->uiPixel] (pMe->pEncMb, iStrideEnc,
pMe->pRefMb, iStrideRef);
pMe->uiSatdCost = pMe->uSadPredISatd.uiSatd + COST_MVD (pMe->pMvdCost, pMe->sMv.iMvX - pMe->sMvp.iMvX,
pMe->sMv.iMvY - pMe->sMvp.iMvY);
}
void WelsMotionEstimateSearchSad (SWelsFuncPtrList* pFuncList, void* pLplayer, void* pLpme, void* pLpslice) {
SDqLayer* pCurDqLayer = (SDqLayer*)pLplayer;
SWelsME* pMe = (SWelsME*)pLpme;
SSlice* slice = (SSlice*)pLpslice;
int32_t iStrideEnc = pCurDqLayer->iEncStride[0];
int32_t iStrideRef = pCurDqLayer->pRefPic->iLineSize[0];
// Step 1: Initial point prediction
WelsMotionEstimateInitialPoint (pFuncList, pMe, slice, iStrideEnc, iStrideRef);
}
/*!
* \brief EL mb motion estimate initial point testing
*
* \param pix_pFuncList SSampleDealingFunc
* \param pMe Wels me information
* \param mv_range search range in motion estimate
* \param point the best match point in motion estimation
*
* \return NONE
*/
void WelsMotionEstimateInitialPoint (SWelsFuncPtrList* pFuncList, SWelsME* pMe, SSlice* pSlice, int32_t iStrideEnc,
int32_t iStrideRef) {
PSampleSadSatdCostFunc pSad = pFuncList->sSampleDealingFuncs.pfSampleSad[pMe->uiPixel];
const uint16_t* kpMvdCost = pMe->pMvdCost;
uint8_t* const kpEncMb = pMe->pEncMb;
int16_t iMvc0, iMvc1;
int32_t iSadCost;
int32_t iBestSadCost;
uint8_t* pRefMb;
uint8_t* pFref2;
uint32_t i;
const uint32_t kuiMvcNum = pSlice->uiMvcNum;
const SMVUnitXY* kpMvcList = &pSlice->sMvc[0];
const SMVUnitXY ksMvMin = pSlice->sMvMin;
const SMVUnitXY ksMvMax = pSlice->sMvMax;
const SMVUnitXY ksMvp = pMe->sMvp;
SMVUnitXY sMv;
// Step 1: Initial point prediction
// init with sMvp
sMv.iMvX = WELS_CLIP3 ((2 + ksMvp.iMvX) >> 2, ksMvMin.iMvX, ksMvMax.iMvX);
sMv.iMvY = WELS_CLIP3 ((2 + ksMvp.iMvY) >> 2, ksMvMin.iMvY, ksMvMax.iMvY);
pRefMb = &pMe->pRefMb[sMv.iMvY * iStrideRef + sMv.iMvX];
iBestSadCost = pSad (kpEncMb, iStrideEnc, pRefMb, iStrideRef);
iBestSadCost += COST_MVD (kpMvdCost, ((sMv.iMvX) << 2) - ksMvp.iMvX, ((sMv.iMvY) << 2) - ksMvp.iMvY);
for (i = 0; i < kuiMvcNum; i++) {
//clipping here is essential since some pOut-of-range MVC may happen here (i.e., refer to baseMV)
iMvc0 = WELS_CLIP3 ((2 + kpMvcList[i].iMvX) >> 2, ksMvMin.iMvX, ksMvMax.iMvX);
iMvc1 = WELS_CLIP3 ((2 + kpMvcList[i].iMvY) >> 2, ksMvMin.iMvY, ksMvMax.iMvY);
if (((iMvc0 - sMv.iMvX) || (iMvc1 - sMv.iMvY))) {
pFref2 = &pMe->pRefMb[iMvc1 * iStrideRef + iMvc0];
iSadCost = pSad (kpEncMb, iStrideEnc, pFref2, iStrideRef) +
COST_MVD (kpMvdCost, (iMvc0 << 2) - ksMvp.iMvX, (iMvc1 << 2) - ksMvp.iMvY);
if (iSadCost < iBestSadCost) {
sMv.iMvX = iMvc0;
sMv.iMvY = iMvc1;
pRefMb = pFref2;
iBestSadCost = iSadCost;
}
}
}
pMe->sMv = sMv;
pMe->uiSadCost = iBestSadCost;
if (iBestSadCost < pMe->uSadPredISatd.uiSadPred) {
// Step 2: Initial early Stop
/* -> qpel mv */
pMe->sMv.iMvX <<= 2;
pMe->sMv.iMvY <<= 2;
/* -> pRef */
pMe->pRefMb = pRefMb;
/* compute the real cost */
pMe->uiSatdCost = iBestSadCost;
} else {
// Step 3: Fast search pattern
WelsMotionEstimateIterativeSearch (pFuncList, pMe, iStrideEnc, iStrideRef, pRefMb);
}
}
bool WelsMeSadCostSelect (int32_t* iSadCost, const uint16_t* kpMvdCost, int32_t* pBestCost, const int32_t kiDx,
const int32_t kiDy, int32_t* pIx, int32_t* pIy) {
int32_t iTempSadCost[4];
int32_t iInputSadCost = *pBestCost;
iTempSadCost[0] = iSadCost[0] + COST_MVD (kpMvdCost, kiDx, kiDy - 4);
iTempSadCost[1] = iSadCost[1] + COST_MVD (kpMvdCost, kiDx, kiDy + 4);
iTempSadCost[2] = iSadCost[2] + COST_MVD (kpMvdCost, kiDx - 4, kiDy);
iTempSadCost[3] = iSadCost[3] + COST_MVD (kpMvdCost, kiDx + 4, kiDy);
if (iTempSadCost[0] < *pBestCost) {
*pBestCost = iTempSadCost[0];
*pIx = 0;
*pIy = 1;
}
if (iTempSadCost[1] < *pBestCost) {
*pBestCost = iTempSadCost[1];
*pIx = 0;
*pIy = -1;
}
if (iTempSadCost[2] < *pBestCost) {
*pBestCost = iTempSadCost[2];
*pIx = 1;
*pIy = 0;
}
if (iTempSadCost[3] < *pBestCost) {
*pBestCost = iTempSadCost[3];
*pIx = -1;
*pIy = 0;
}
return (*pBestCost == iInputSadCost);
}
void WelsMotionEstimateIterativeSearch (SWelsFuncPtrList* pFuncList, SWelsME* pMe, const int32_t kiStrideEnc,
const int32_t kiStrideRef, uint8_t* pFref) {
PSample4SadCostFunc pSad = pFuncList->sSampleDealingFuncs.pfSample4Sad[pMe->uiPixel];
uint8_t* const kpEncMb = pMe->pEncMb;
const uint16_t* kpMvdCost = pMe->pMvdCost;
int32_t iMvDx = ((pMe->sMv.iMvX) << 2) - pMe->sMvp.iMvX;
int32_t iMvDy = ((pMe->sMv.iMvY) << 2) - pMe->sMvp.iMvY;
uint8_t* pRefMb = pFref;
int32_t iBestCost = (pMe->uiSadCost);
int32_t iTimeThreshold = ITERATIVE_TIMES;
ENFORCE_STACK_ALIGN_1D (int32_t, iSadCosts, 4, 16)
while (iTimeThreshold--) {
pSad (kpEncMb, kiStrideEnc, pRefMb, kiStrideRef, &iSadCosts[0]);
int32_t iX, iY;
const bool kbIsBestCostWorse = WelsMeSadCostSelect (iSadCosts, kpMvdCost, &iBestCost, iMvDx, iMvDy, &iX, &iY);
if (kbIsBestCostWorse)
break;
iMvDx -= iX << 2 ;
iMvDy -= iY << 2 ;
pRefMb -= (iX + iY * kiStrideRef);
}
/* -> qpel mv */
pMe->sMv.iMvX = (iMvDx + pMe->sMvp.iMvX) & 0xFFFC;
pMe->sMv.iMvY = (iMvDy + pMe->sMvp.iMvY) & 0xFFFC;
pMe->uiSatdCost = pMe->uiSadCost = (iBestCost);
pMe->pRefMb = pRefMb;
}
} // namespace WelsSVCEnc