//basic iMVs prediction unit for iMVs partition width (4, 2, 1)
void_t PredMv(int16_t iMotionVector[LIST_A][30][MV_A], int8_t iRefIndex[LIST_A][30],
int32_t iPartIdx, int32_t iPartWidth, int8_t iRef, int16_t iMVP[2])
{
const uint8_t kuiLeftIdx = g_kuiCache30ScanIdx[iPartIdx] - 1;
const uint8_t kuiTopIdx = g_kuiCache30ScanIdx[iPartIdx] - 6;
const uint8_t kuiRightTopIdx= kuiTopIdx + iPartWidth;
const uint8_t kuiLeftTopIdx = kuiTopIdx - 1;
const int8_t kiLeftRef = iRefIndex[0][kuiLeftIdx];
const int8_t kiTopRef = iRefIndex[0][ kuiTopIdx];
const int8_t kiRightTopRef = iRefIndex[0][kuiRightTopIdx];
const int8_t kiLeftTopRef = iRefIndex[0][ kuiLeftTopIdx];
int8_t iDiagonalRef = kiRightTopRef;
int8_t iMatchRef = 0;
int16_t iAMV[2], iBMV[2], iCMV[2];
*(int32_t*)iAMV = INTD32(iMotionVector[0][ kuiLeftIdx]);
*(int32_t*)iBMV = INTD32(iMotionVector[0][ kuiTopIdx]);
*(int32_t*)iCMV = INTD32(iMotionVector[0][kuiRightTopIdx]);
if (REF_NOT_AVAIL == iDiagonalRef)
{
iDiagonalRef = kiLeftTopRef;
*(int32_t*)iCMV = INTD32(iMotionVector[0][kuiLeftTopIdx]);
}
iMatchRef = (iRef == kiLeftRef) + (iRef == kiTopRef) + (iRef == iDiagonalRef);
if (REF_NOT_AVAIL == kiTopRef && REF_NOT_AVAIL == iDiagonalRef && kiLeftRef >= REF_NOT_IN_LIST)
{
ST32(iMVP, LD32(iAMV));
return;
}
if (1 == iMatchRef)
{
if (iRef == kiLeftRef)
{
ST32(iMVP, LD32(iAMV));
}
else if (iRef == kiTopRef)
{
ST32(iMVP, LD32(iBMV));
}
else
{
ST32(iMVP, LD32(iCMV));
}
}
else
{
iMVP[0] = WelsMedian(iAMV[0], iBMV[0], iCMV[0]);
iMVP[1] = WelsMedian(iAMV[1], iBMV[1], iCMV[1]);
}
}
void PredPSkipMvFromNeighbor (PDqLayer pCurLayer, int16_t iMvp[2]) {
bool bTopAvail, bLeftTopAvail, bRightTopAvail, bLeftAvail;
int32_t iCurSliceIdc, iTopSliceIdc, iLeftTopSliceIdc, iRightTopSliceIdc, iLeftSliceIdc;
int32_t iLeftTopType, iRightTopType, iTopType, iLeftType;
int32_t iCurX, iCurY, iCurXy, iLeftXy, iTopXy, iLeftTopXy, iRightTopXy;
int8_t iLeftRef;
int8_t iTopRef;
int8_t iRightTopRef;
int8_t iLeftTopRef;
int8_t iDiagonalRef;
int8_t iMatchRef;
int16_t iMvA[2], iMvB[2], iMvC[2], iMvD[2];
iCurXy = pCurLayer->iMbXyIndex;
iCurX = pCurLayer->iMbX;
iCurY = pCurLayer->iMbY;
iCurSliceIdc = pCurLayer->pSliceIdc[iCurXy];
if (iCurX != 0) {
iLeftXy = iCurXy - 1;
iLeftSliceIdc = pCurLayer->pSliceIdc[iLeftXy];
bLeftAvail = (iLeftSliceIdc == iCurSliceIdc);
} else {
bLeftAvail = 0;
bLeftTopAvail = 0;
}
if (iCurY != 0) {
iTopXy = iCurXy - pCurLayer->iMbWidth;
iTopSliceIdc = pCurLayer->pSliceIdc[iTopXy];
bTopAvail = (iTopSliceIdc == iCurSliceIdc);
if (iCurX != 0) {
iLeftTopXy = iTopXy - 1;
iLeftTopSliceIdc = pCurLayer->pSliceIdc[iLeftTopXy];
bLeftTopAvail = (iLeftTopSliceIdc == iCurSliceIdc);
} else {
bLeftTopAvail = 0;
}
if (iCurX != (pCurLayer->iMbWidth - 1)) {
iRightTopXy = iTopXy + 1;
iRightTopSliceIdc = pCurLayer->pSliceIdc[iRightTopXy];
bRightTopAvail = (iRightTopSliceIdc == iCurSliceIdc);
} else {
bRightTopAvail = 0;
}
} else {
bTopAvail = 0;
bLeftTopAvail = 0;
bRightTopAvail = 0;
}
iLeftType = ((iCurX != 0 && bLeftAvail) ? pCurLayer->pMbType[iLeftXy] : 0);
iTopType = ((iCurY != 0 && bTopAvail) ? pCurLayer->pMbType[iTopXy] : 0);
iLeftTopType = ((iCurX != 0 && iCurY != 0 && bLeftTopAvail)
? pCurLayer->pMbType[iLeftTopXy] : 0);
iRightTopType = ((iCurX != pCurLayer->iMbWidth - 1 && iCurY != 0 && bRightTopAvail)
? pCurLayer->pMbType[iRightTopXy] : 0);
/*get neb mv&iRefIdxArray*/
/*left*/
if (bLeftAvail && IS_INTER (iLeftType)) {
ST32 (iMvA, LD32 (pCurLayer->pMv[0][iLeftXy][3]));
iLeftRef = pCurLayer->pRefIndex[0][iLeftXy][3];
} else {
ST32 (iMvA, 0);
if (0 == bLeftAvail) { //not available
iLeftRef = REF_NOT_AVAIL;
} else { //available but is intra mb type
iLeftRef = REF_NOT_IN_LIST;
}
}
if (REF_NOT_AVAIL == iLeftRef ||
(0 == iLeftRef && 0 == * (int32_t*)iMvA)) {
ST32 (iMvp, 0);
return;
}
/*top*/
if (bTopAvail && IS_INTER (iTopType)) {
ST32 (iMvB, LD32 (pCurLayer->pMv[0][iTopXy][12]));
iTopRef = pCurLayer->pRefIndex[0][iTopXy][12];
} else {
ST32 (iMvB, 0);
if (0 == bTopAvail) { //not available
iTopRef = REF_NOT_AVAIL;
} else { //available but is intra mb type
iTopRef = REF_NOT_IN_LIST;
}
}
if (REF_NOT_AVAIL == iTopRef ||
(0 == iTopRef && 0 == * (int32_t*)iMvB)) {
ST32 (iMvp, 0);
return;
}
/*right_top*/
if (bRightTopAvail && IS_INTER (iRightTopType)) {
ST32 (iMvC, LD32 (pCurLayer->pMv[0][iRightTopXy][12]));
iRightTopRef = pCurLayer->pRefIndex[0][iRightTopXy][12];
} else {
ST32 (iMvC, 0);
if (0 == bRightTopAvail) { //not available
iRightTopRef = REF_NOT_AVAIL;
} else { //available but is intra mb type
iRightTopRef = REF_NOT_IN_LIST;
}
}
/*left_top*/
if (bLeftTopAvail && IS_INTER (iLeftTopType)) {
ST32 (iMvD, LD32 (pCurLayer->pMv[0][iLeftTopXy][15]));
iLeftTopRef = pCurLayer->pRefIndex[0][iLeftTopXy][15];
} else {
ST32 (iMvD, 0);
if (0 == bLeftTopAvail) { //not available
iLeftTopRef = REF_NOT_AVAIL;
} else { //available but is intra mb type
iLeftTopRef = REF_NOT_IN_LIST;
}
}
iDiagonalRef = iRightTopRef;
if (REF_NOT_AVAIL == iDiagonalRef) {
iDiagonalRef = iLeftTopRef;
* (int32_t*)iMvC = * (int32_t*)iMvD;
}
if (REF_NOT_AVAIL == iTopRef && REF_NOT_AVAIL == iDiagonalRef && iLeftRef >= REF_NOT_IN_LIST) {
ST32 (iMvp, LD32 (iMvA));
return;
}
iMatchRef = (0 == iLeftRef) + (0 == iTopRef) + (0 == iDiagonalRef);
if (1 == iMatchRef) {
if (0 == iLeftRef) {
ST32 (iMvp, LD32 (iMvA));
} else if (0 == iTopRef) {
ST32 (iMvp, LD32 (iMvB));
} else {
ST32 (iMvp, LD32 (iMvC));
}
} else {
iMvp[0] = WelsMedian (iMvA[0], iMvB[0], iMvC[0]);
iMvp[1] = WelsMedian (iMvA[1], iMvB[1], iMvC[1]);
}
}