Function InitDqLayerInfo

codec/decoder/core/src/decoder_core.cpp:2378–2422

}

static inline void InitDqLayerInfo (PDqLayer pDqLayer, PLayerInfo pLayerInfo, PNalUnit pNalUnit, PPicture pPicDec) {
  PNalUnitHeaderExt pNalHdrExt    = &pNalUnit->sNalHeaderExt;
  PSliceHeaderExt pShExt          = &pNalUnit->sNalData.sVclNal.sSliceHeaderExt;
  PSliceHeader pSh                = &pShExt->sSliceHeader;
  const uint8_t kuiQualityId      = pNalHdrExt->uiQualityId;

  memcpy (&pDqLayer->sLayerInfo, pLayerInfo, sizeof (SLayerInfo)); //confirmed_safe_unsafe_usage

  pDqLayer->pDec        = pPicDec;
  pDqLayer->iMbWidth    = pSh->iMbWidth;        // MB width of this picture
  pDqLayer->iMbHeight   = pSh->iMbHeight;// MB height of this picture

  pDqLayer->iSliceIdcBackup = (pSh->iFirstMbInSlice << 7) | (pNalHdrExt->uiDependencyId << 4) | (pNalHdrExt->uiQualityId);

  /* Common syntax elements across all slices of a DQLayer */
  pDqLayer->uiPpsId                                     = pLayerInfo->pPps->iPpsId;
  pDqLayer->uiDisableInterLayerDeblockingFilterIdc      = pShExt->uiDisableInterLayerDeblockingFilterIdc;
  pDqLayer->iInterLayerSliceAlphaC0Offset               = pShExt->iInterLayerSliceAlphaC0Offset;
  pDqLayer->iInterLayerSliceBetaOffset                  = pShExt->iInterLayerSliceBetaOffset;
  pDqLayer->iSliceGroupChangeCycle                      = pSh->iSliceGroupChangeCycle;
  pDqLayer->bStoreRefBasePicFlag                        = pShExt->bStoreRefBasePicFlag;
  pDqLayer->bTCoeffLevelPredFlag                        = pShExt->bTCoeffLevelPredFlag;
  pDqLayer->bConstrainedIntraResamplingFlag             = pShExt->bConstrainedIntraResamplingFlag;
  pDqLayer->uiRefLayerDqId                              = pShExt->uiRefLayerDqId;
  pDqLayer->uiRefLayerChromaPhaseXPlus1Flag             = pShExt->uiRefLayerChromaPhaseXPlus1Flag;
  pDqLayer->uiRefLayerChromaPhaseYPlus1                 = pShExt->uiRefLayerChromaPhaseYPlus1;
  pDqLayer->bUseWeightPredictionFlag                    = false;
  pDqLayer->bUseWeightedBiPredIdc = false;
  //memcpy(&pDqLayer->sScaledRefLayer, &pShExt->sScaledRefLayer, sizeof(SPosOffset));//confirmed_safe_unsafe_usage

  if (kuiQualityId == BASE_QUALITY_ID) {
    pDqLayer->pRefPicListReordering = &pSh->pRefPicListReordering;
    pDqLayer->pRefPicMarking = &pSh->sRefMarking;

    pDqLayer->bUseWeightPredictionFlag = pSh->pPps->bWeightedPredFlag;
    pDqLayer->bUseWeightedBiPredIdc = pSh->pPps->uiWeightedBipredIdc != 0;
    if (pSh->pPps->bWeightedPredFlag || pSh->pPps->uiWeightedBipredIdc) {
      pDqLayer->pPredWeightTable = &pSh->sPredWeightTable;
    }
    pDqLayer->pRefPicBaseMarking        = &pShExt->sRefBasePicMarking;
  }

  pDqLayer->uiLayerDqId                 = pNalHdrExt->uiLayerDqId;      // dq_id of current layer
  pDqLayer->bUseRefBasePicFlag          = pNalHdrExt->bUseRefBasePicFlag;
}

void WelsDqLayerDecodeStart (PWelsDecoderContext pCtx, PNalUnit pCurNal, PSps pSps, PPps pPps) {
  PSliceHeader pSh = &pCurNal->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader;