Function UpdateDecStatNoFreezingInfo

codec/decoder/core/src/decoder.cpp:1208–1248

update information when no freezing occurs, including QP, correct IDR number, ECed IDR number

//update information when no freezing occurs, including QP, correct IDR number, ECed IDR number
void UpdateDecStatNoFreezingInfo (PWelsDecoderContext pCtx) {
  PDqLayer pCurDq = pCtx->pCurDqLayer;
  PPicture pPic = pCtx->pDec;
  SDecoderStatistics* pDecStat = pCtx->pDecoderStatistics;

  if (pDecStat->iAvgLumaQp == -1) //first correct frame received
    pDecStat->iAvgLumaQp = 0;

  //update QP info
  int32_t iTotalQp = 0;
  const int32_t kiMbNum = pCurDq->iMbWidth * pCurDq->iMbHeight;
  if (pCtx->pParam->eEcActiveIdc == ERROR_CON_DISABLE) { //all correct
    for (int32_t iMb = 0; iMb < kiMbNum; ++iMb) {
      iTotalQp += pCurDq->pLumaQp[iMb];
    }
    iTotalQp /= kiMbNum;
  } else {
    int32_t iCorrectMbNum = 0;
    for (int32_t iMb = 0; iMb < kiMbNum; ++iMb) {
      iCorrectMbNum += (int32_t) pCurDq->pMbCorrectlyDecodedFlag[iMb];
      iTotalQp += pCurDq->pLumaQp[iMb] * pCurDq->pMbCorrectlyDecodedFlag[iMb];
    }
    if (iCorrectMbNum == 0) //non MB is correct, should remain QP statistic info
      iTotalQp = pDecStat->iAvgLumaQp;
    else
      iTotalQp /= iCorrectMbNum;
  }
  if (pDecStat->uiDecodedFrameCount + 1 == 0) { //maximum uint32_t reached
    ResetDecStatNums (pDecStat);
    pDecStat->iAvgLumaQp = iTotalQp;
  } else
    pDecStat->iAvgLumaQp = (int) ((uint64_t) (pDecStat->iAvgLumaQp * pDecStat->uiDecodedFrameCount + iTotalQp) /
                                  (pDecStat->uiDecodedFrameCount + 1));

  //update IDR number
  if (pCurDq->sLayerInfo.sNalHeaderExt.bIdrFlag) {
    pDecStat->uiIDRCorrectNum += (pPic->bIsComplete);
    if (pCtx->pParam->eEcActiveIdc != ERROR_CON_DISABLE)
      pDecStat->uiEcIDRNum += (!pPic->bIsComplete);
  }
}

//update decoder statistics information
void UpdateDecStat (PWelsDecoderContext pCtx, const bool kbOutput) {