int32_t CWelsPreProcess::BuildSpatialPicList (sWelsEncCtx* pCtx, const SSourcePicture* kpSrcPic) {
SWelsSvcCodingParam* pSvcParam = pCtx->pSvcParam;
int32_t iNumDependencyLayer = (int32_t)pSvcParam->iSpatialLayerNum;
int32_t iSpatialNum = 0;
if (!m_bInitDone) {
if (WelsPreprocessCreate() != 0)
return -1;
if (WelsPreprocessReset (pCtx) != 0)
return -1;
m_bInitDone = true;
}
if (m_pInterfaceVp == NULL)
return -1;
pCtx->pVaa->bSceneChangeFlag = pCtx->pVaa->bIdrPeriodFlag = false;
if (pSvcParam->uiIntraPeriod)
pCtx->pVaa->bIdrPeriodFlag = (1 + pCtx->iFrameIndex >= (int32_t)pSvcParam->uiIntraPeriod) ? true : false;
iSpatialNum = SingleLayerPreprocess (pCtx, kpSrcPic, &m_sScaledPicture);
return iSpatialNum;
}
int32_t CWelsPreProcess::WelsPreprocessStep1 (void* pCtx, const SSourcePicture** kppSrcPicList,
const int32_t kiConfiguredLayerNum) {
sWelsEncCtx* pEncCtx = (sWelsEncCtx*)pCtx;
SWelsSvcCodingParam* pSvcParam = pEncCtx->pSvcParam;
int32_t iNumDependencyLayer = (int32_t)pSvcParam->iNumDependencyLayer;
int32_t iSpatialNum = 0;
if (!m_bInitDone) {
if (WelsPreprocessCreate() != 0)
return -1;
if (WelsPreprocessReset (pEncCtx) != 0)
return -1;
m_bOfficialBranch = (iNumDependencyLayer != kiConfiguredLayerNum);
if (!m_bOfficialBranch && (iNumDependencyLayer == 1)) {
// check the input source uiSize to decide if need switch to official branch
// NOTICE: the layernum=1 case is confused in official/non-official cases!
SSourcePicture** pic_queue = (SSourcePicture**)kppSrcPicList;
for (int32_t i = 0; i < iNumDependencyLayer; i++) {
if (pSvcParam->sDependencyLayers[i].iFrameWidth != pic_queue[i]->iPicWidth ||
pSvcParam->sDependencyLayers[i].iFrameHeight != pic_queue[i]->iPicHeight) {
m_bOfficialBranch = TRUE;
break;
}
}
}
m_bInitDone = TRUE;
}
if (m_pInterfaceVp == NULL)
return -1;
if (kiConfiguredLayerNum <= 0)
return -1;
pEncCtx->pVaa->bSceneChangeFlag = pEncCtx->pVaa->bIdrPeriodFlag = false;
if (pSvcParam->uiIntraPeriod)
pEncCtx->pVaa->bIdrPeriodFlag = (1 + pEncCtx->iFrameIndex >= (int32_t)pSvcParam->uiIntraPeriod) ? true : false;
if (m_bOfficialBranch) { // Perform Down Sampling potentially due to application
assert (kiConfiguredLayerNum == 1);
iSpatialNum = SingleLayerPreprocess (pEncCtx, kppSrcPicList[0], &m_sScaledPicture);
} else { // for console each spatial pictures are available there
iSpatialNum = kiConfiguredLayerNum;
MultiLayerPreprocess (pEncCtx, kppSrcPicList, iSpatialNum);
}
return iSpatialNum;
}