EncAppCfg.cpp

  }
#else
 #if QP_SWITCHING_FOR_PARALLEL
  if( ( m_iQP < 38 ) && ( m_iGOPSize > 4 ) && m_bUsePerceptQPA && !m_bUseAdaptiveQP && ( m_sourceHeight <= 1280 ) && ( m_sourceWidth <= 2048 ) )
 #else
  if( ( ( int ) m_fQP < 38 ) && ( m_iGOPSize > 4 ) && m_bUsePerceptQPA && !m_bUseAdaptiveQP && ( m_sourceHeight <= 1280 ) && ( m_sourceWidth <= 2048 ) )
 #endif
  {
    msg( WARNING, "*************************************************************************\n" );
    msg( WARNING, "* WARNING: QPA on with large CTU for <=HD sequences, limiting CTU size! *\n" );
    msg( WARNING, "*************************************************************************\n" );

    m_uiCTUSize = m_uiMaxCUWidth;
    if( ( 1u << m_log2MaxTbSize         ) > m_uiCTUSize ) m_log2MaxTbSize--;
  }
#endif
#endif // ENABLE_QPA




  if( m_costMode == COST_LOSSLESS_CODING )
  {
    bool firstSliceLossless = false;
    if (m_mixedLossyLossless)
    {
      if (m_sliceLosslessArray.size() > 0)
      {
        for (uint32_t i = 0; i < m_sliceLosslessArray.size(); i++)
        {
          if (m_sliceLosslessArray[i] == 0)
          {
            firstSliceLossless = true;
            break;
          }
        }
      }
    }
    else
    {
      firstSliceLossless = true;
    }
    if (firstSliceLossless) // if first slice is lossless
    m_iQP = LOSSLESS_AND_MIXED_LOSSLESS_RD_COST_TEST_QP - ( ( m_internalBitDepth[CHANNEL_TYPE_LUMA] - 8 ) * 6 );
  }


  m_uiMaxCUWidth = m_uiMaxCUHeight = m_uiCTUSize;

  // check validity of input parameters
  if( xCheckParameter() )
  {
    // return check failed
    return false;
  }

  // print-out parameters
  xPrintParameter();

  return true;
}


// ====================================================================================================================
// Private member functions
// ====================================================================================================================

///< auto determine the profile to use given the other configuration settings. Returns 1 if erred. Can select profile 'NONE'

int EncAppCfg::xAutoDetermineProfile()
{
  const int maxBitDepth= std::max(m_internalBitDepth[CHANNEL_TYPE_LUMA], m_internalBitDepth[m_chromaFormatIDC==ChromaFormat::CHROMA_400 ? CHANNEL_TYPE_LUMA : CHANNEL_TYPE_CHROMA]);
  m_profile=Profile::NONE;

  switch (m_chromaFormatIDC)
  {
  case ChromaFormat::CHROMA_400:
  case ChromaFormat::CHROMA_420:
    if (maxBitDepth <= 10)
    {
      if (m_level == Level::LEVEL15_5 && m_framesToBeEncoded == 1)
      {
        m_profile = m_maxLayers > 1 ? Profile::MULTILAYER_MAIN_10_STILL_PICTURE : Profile::MAIN_10_STILL_PICTURE;
      }
      else
      {
        m_profile = m_maxLayers > 1 ? Profile::MULTILAYER_MAIN_10 : Profile::MAIN_10;
      }
    }
    else if (maxBitDepth <= 12)
    {
      m_profile = (m_level == Level::LEVEL15_5 && m_framesToBeEncoded == 1) ? Profile::MAIN_12_STILL_PICTURE : (m_iIntraPeriod == 1) ? Profile::MAIN_12_INTRA : Profile::MAIN_12;
    }
    else if (maxBitDepth <= 16)
    {
      // Since there's no 16bit 420 profiles in VVC, we use 444 profiles.
      m_profile = (m_level == Level::LEVEL15_5 && m_framesToBeEncoded == 1) ? Profile::MAIN_16_444_STILL_PICTURE : (m_iIntraPeriod == 1) ? Profile::MAIN_16_444_INTRA : Profile::MAIN_16_444;
    }
    break;

  case ChromaFormat::CHROMA_422:
  case ChromaFormat::CHROMA_444:
    if (maxBitDepth <= 10)
    {
      if (m_level == Level::LEVEL15_5 && m_framesToBeEncoded == 1)
      {
        m_profile =
          m_maxLayers > 1 ? Profile::MULTILAYER_MAIN_10_444_STILL_PICTURE : Profile::MAIN_10_444_STILL_PICTURE;
      }
      else
      {
        m_profile = m_maxLayers > 1 ? Profile::MULTILAYER_MAIN_10_444 : Profile::MAIN_10_444;
      }
    }
    else if (maxBitDepth <= 12)
    {
      m_profile = (m_level == Level::LEVEL15_5 && m_framesToBeEncoded == 1) ? Profile::MAIN_12_444_STILL_PICTURE : (m_iIntraPeriod == 1) ? Profile::MAIN_12_444_INTRA : Profile::MAIN_12_444;
    }
    else if (maxBitDepth <= 16)
    {
      m_profile = (m_level == Level::LEVEL15_5 && m_framesToBeEncoded == 1) ? Profile::MAIN_16_444_STILL_PICTURE : (m_iIntraPeriod == 1) ? Profile::MAIN_16_444_INTRA : Profile::MAIN_16_444;
    }
    break;

  default: return 1;
  }
#if JVET_X0079_MODIFIED_BITRATE
  if (m_profile == Profile::MAIN_12_INTRA || m_profile == Profile::MAIN_12_444_INTRA || m_profile == Profile::MAIN_16_444_INTRA ||
      m_profile == Profile::MAIN_12_STILL_PICTURE || m_profile == Profile::MAIN_12_444_STILL_PICTURE || m_profile == Profile::MAIN_16_444_STILL_PICTURE)
  {
    m_allRapPicturesFlag = 1;
  }
#else
    if (m_profile == Profile::MAIN_12 || m_profile == Profile::MAIN_12_444 || m_profile == Profile::MAIN_16_444)
    {
      m_generalLowerBitRateConstraintFlag = 1; // GeneralLowerBitRateConstraintFlag setting must be 1 for non-Intra/Still Picture operation range extension profiles.")
    }
#endif
  return 0;
}

bool EncAppCfg::xCheckParameter()
{
  msg( NOTICE, "\n" );
  if (m_decodedPictureHashSEIType==HASHTYPE_NONE)
  {
    msg( DETAILS, "******************************************************************\n");
    msg( DETAILS, "** WARNING: --SEIDecodedPictureHash is now disabled by default. **\n");
    msg( DETAILS, "**          Automatic verification of decoded pictures by a     **\n");
    msg( DETAILS, "**          decoder requires this option to be enabled.         **\n");
    msg( DETAILS, "******************************************************************\n");
  }
  if( m_profile==Profile::NONE )
  {
    msg( DETAILS, "***************************************************************************\n");
    msg( DETAILS, "** WARNING: For conforming bitstreams a valid Profile value must be set! **\n");
    msg( DETAILS, "***************************************************************************\n");
  }
  if( m_level==Level::NONE )
  {
    msg( DETAILS, "***************************************************************************\n");
    msg( DETAILS, "** WARNING: For conforming bitstreams a valid Level value must be set!   **\n");
    msg( DETAILS, "***************************************************************************\n");
  }

  bool check_failed = false; /* abort if there is a fatal configuration problem */
#define xConfirmPara(a,b) check_failed |= confirmPara(a,b)

#if JVET_X0143_ALF_APS_CHANGES
  xConfirmPara(m_maxNumAlfAps > ALF_CTB_MAX_NUM_APS, "The number of ALF APSs should not be more than ALF_CTB_MAX_NUM_APS");
#endif

  if( m_depQuantEnabledFlag )
  {
    xConfirmPara( !m_useRDOQ || !m_useRDOQTS, "RDOQ and RDOQTS must be equal to 1 if dependent quantization is enabled" );
    xConfirmPara( m_signDataHidingEnabledFlag, "SignHideFlag must be equal to 0 if dependent quantization is enabled" );
  }

  if( m_wrapAround )
  {
    const int minCUSize = 1 << m_log2MinCuSize;
    xConfirmPara(m_wrapAroundOffset <= m_uiCTUSize + minCUSize, "Wrap-around offset must be greater than CtbSizeY + MinCbSize");
    xConfirmPara(m_wrapAroundOffset > m_sourceWidth, "Wrap-around offset must not be greater than the source picture width");
    xConfirmPara( m_wrapAroundOffset % minCUSize != 0, "Wrap-around offset must be an integer multiple of the specified minimum CU size" );
  }


#if SHARP_LUMA_DELTA_QP && ENABLE_QPA
  xConfirmPara( m_bUsePerceptQPA && m_lumaLevelToDeltaQPMapping.mode >= 2, "QPA and SharpDeltaQP mode 2 cannot be used together" );
  if( m_bUsePerceptQPA && m_lumaLevelToDeltaQPMapping.mode == LUMALVL_TO_DQP_AVG_METHOD )
  {
    msg( WARNING, "*********************************************************************************\n" );
    msg( WARNING, "** WARNING: Applying custom luma-based QPA with activity-based perceptual QPA! **\n" );
    msg( WARNING, "*********************************************************************************\n" );

    m_lumaLevelToDeltaQPMapping.mode = LUMALVL_TO_DQP_NUM_MODES; // special QPA mode
  }
#endif


  xConfirmPara( m_useAMaxBT && !m_SplitConsOverrideEnabledFlag, "AMaxBt can only be used with PartitionConstriantsOverride enabled" );


  xConfirmPara(m_bitstreamFileName.empty(), "A bitstream file name must be specified (BitstreamFile)");
  xConfirmPara(m_internalBitDepth[CHANNEL_TYPE_CHROMA] != m_internalBitDepth[CHANNEL_TYPE_LUMA], "The internalBitDepth must be the same for luma and chroma");
  if (m_profile != Profile::NONE)
  {
    xConfirmPara(m_log2MaxTransformSkipBlockSize>=6, "Transform Skip Log2 Max Size must be less or equal to 5 for given profile.");
    xConfirmPara(m_transformSkipRotationEnabledFlag==true, "UseResidualRotation must not be enabled for given profile.");
    xConfirmPara(m_transformSkipContextEnabledFlag==true, "UseSingleSignificanceMapContext must not be enabled for given profile.");
    xConfirmPara(m_highPrecisionOffsetsEnabledFlag==true, "UseHighPrecisionPredictionWeighting must not be enabled for given profile.");
    xConfirmPara(m_enableIntraReferenceSmoothing==false, "EnableIntraReferenceSmoothing must be enabled for given profile.");
    xConfirmPara(m_cabacBypassAlignmentEnabledFlag, "AlignCABACBeforeBypass cannot be enabled for given profile.");
  }
  if (m_profile != Profile::NONE && m_profile != Profile::MAIN_12_444 && m_profile != Profile::MAIN_16_444 && m_profile != Profile::MAIN_12_444_INTRA && m_profile != Profile::MAIN_16_444_INTRA && m_profile != Profile::MAIN_12_444_STILL_PICTURE && m_profile != Profile::MAIN_12_444_STILL_PICTURE && m_profile != Profile::MAIN_16_444_STILL_PICTURE)
  {
    xConfirmPara(m_rrcRiceExtensionEnableFlag == true, "Extention of the Golomb-Rice parameter derivation for RRC must not be enabled for given profile.");
    xConfirmPara(m_persistentRiceAdaptationEnabledFlag==true, "GolombRiceParameterAdaption must not be enabled for given profile.");
    xConfirmPara(m_extendedPrecisionProcessingFlag==true, "UseExtendedPrecision must not be enabled for given profile.");
    xConfirmPara(m_tsrcRicePresentFlag == true, "TSRCRicePresent must not be enabled for given profile.");
    xConfirmPara(m_reverseLastSigCoeffEnabledFlag == true, "ReverseLastSigCoeff must not be enabled for given profile.");
  }


  // check range of parameters
  xConfirmPara( m_inputBitDepth[CHANNEL_TYPE_LUMA  ] < 8,                                   "InputBitDepth must be at least 8" );
  xConfirmPara( m_inputBitDepth[CHANNEL_TYPE_CHROMA] < 8,                                   "InputBitDepthC must be at least 8" );

  if( (m_internalBitDepth[CHANNEL_TYPE_LUMA] < m_inputBitDepth[CHANNEL_TYPE_LUMA]) || (m_internalBitDepth[CHANNEL_TYPE_CHROMA] < m_inputBitDepth[CHANNEL_TYPE_CHROMA]) )
  {
      msg(WARNING, "*****************************************************************************\n");
      msg(WARNING, "** WARNING: InternalBitDepth is set to the lower value than InputBitDepth! **\n");
      msg(WARNING, "**          min_qp_prime_ts_minus4 will be clipped to 0 at the low end!    **\n");
      msg(WARNING, "*****************************************************************************\n");
  }

#if !RExt__HIGH_BIT_DEPTH_SUPPORT
  if (m_extendedPrecisionProcessingFlag)
  {
    for (uint32_t channelType = 0; channelType < MAX_NUM_CHANNEL_TYPE; channelType++)
    {
      xConfirmPara((m_internalBitDepth[channelType] > 8) , "Model is not configured to support high enough internal accuracies - enable RExt__HIGH_BIT_DEPTH_SUPPORT to use increased precision internal data types etc...");
    }
  }
  else
  {
    for (uint32_t channelType = 0; channelType < MAX_NUM_CHANNEL_TYPE; channelType++)
    {
      xConfirmPara((m_internalBitDepth[channelType] > 12) , "Model is not configured to support high enough internal accuracies - enable RExt__HIGH_BIT_DEPTH_SUPPORT to use increased precision internal data types etc...");
    }
  }
#endif

  xConfirmPara( (m_MSBExtendedBitDepth[CHANNEL_TYPE_LUMA  ] < m_inputBitDepth[CHANNEL_TYPE_LUMA  ]), "MSB-extended bit depth for luma channel (--MSBExtendedBitDepth) must be greater than or equal to input bit depth for luma channel (--InputBitDepth)" );
  xConfirmPara( (m_MSBExtendedBitDepth[CHANNEL_TYPE_CHROMA] < m_inputBitDepth[CHANNEL_TYPE_CHROMA]), "MSB-extended bit depth for chroma channel (--MSBExtendedBitDepthC) must be greater than or equal to input bit depth for chroma channel (--InputBitDepthC)" );

  bool check_sps_range_extension_flag = m_extendedPrecisionProcessingFlag || 
                                  m_rrcRiceExtensionEnableFlag ||
                                  m_persistentRiceAdaptationEnabledFlag || 
                                  m_tsrcRicePresentFlag;
  if (m_internalBitDepth[CHANNEL_TYPE_LUMA] <= 10)
    xConfirmPara( (check_sps_range_extension_flag == 1) ,
                 "RExt tools (Extended Precision Processing, RRC Rice Extension, Persistent Rice Adaptation and TSRC Rice Extension) must be disabled for BitDepth is less than or equal to 10 (the value of sps_range_extension_flag shall be 0 when BitDepth is less than or equal to 10.)");

  xConfirmPara( m_chromaFormatIDC >= NUM_CHROMA_FORMAT,                                     "ChromaFormatIDC must be either 400, 420, 422 or 444" );
  std::string sTempIPCSC="InputColourSpaceConvert must be empty, "+getListOfColourSpaceConverts(true);
  xConfirmPara( m_inputColourSpaceConvert >= NUMBER_INPUT_COLOUR_SPACE_CONVERSIONS,         sTempIPCSC.c_str() );
  xConfirmPara( m_InputChromaFormatIDC >= NUM_CHROMA_FORMAT,                                "InputChromaFormatIDC must be either 400, 420, 422 or 444" );
  xConfirmPara( m_iFrameRate <= 0,                                                          "Frame rate must be more than 1" );
  xConfirmPara( m_framesToBeEncoded <= 0,                                                   "Total Number Of Frames encoded must be more than 0" );
  xConfirmPara( m_framesToBeEncoded < m_switchPOC,                                          "debug POC out of range" );

  xConfirmPara( m_iGOPSize < 1 ,                                                            "GOP Size must be greater or equal to 1" );
  xConfirmPara( m_iGOPSize > 1 &&  m_iGOPSize % 2,                                          "GOP Size must be a multiple of 2, if GOP Size is greater than 1" );
  xConfirmPara( (m_iIntraPeriod > 0 && m_iIntraPeriod < m_iGOPSize) || m_iIntraPeriod == 0, "Intra period must be more than GOP size, or -1 , not 0" );
  xConfirmPara( m_drapPeriod < 0,                                                           "DRAP period must be greater or equal to 0" );
  xConfirmPara( m_edrapPeriod < 0,                                                          "EDRAP period must be greater or equal to 0" );
  xConfirmPara( m_iDecodingRefreshType < 0 || m_iDecodingRefreshType > 3,                   "Decoding Refresh Type must be comprised between 0 and 3 included" );

  if (m_isField)
  {
    if (!m_frameFieldInfoSEIEnabled)
    {
      msg( WARNING, "*************************************************************************************\n");
      msg( WARNING, "** WARNING: Frame field information SEI should be enabled for field coding!        **\n");
      msg( WARNING, "*************************************************************************************\n");
    }
  }
  if ( m_pictureTimingSEIEnabled && (!m_bufferingPeriodSEIEnabled))
  {
    msg( WARNING, "****************************************************************************\n");
    msg( WARNING, "** WARNING: Picture Timing SEI requires Buffering Period SEI. Disabling.  **\n");
    msg( WARNING, "****************************************************************************\n");
    m_pictureTimingSEIEnabled = false;
  }

  xConfirmPara( m_bufferingPeriodSEIEnabled == true && m_RCCpbSize == 0,  "RCCpbSize must be greater than zero, when buffering period SEI is enabled" );

  xConfirmPara (m_log2MaxTransformSkipBlockSize < 2, "Transform Skip Log2 Max Size must be at least 2 (4x4)");

  xConfirmPara ( m_onePictureOnlyConstraintFlag && m_framesToBeEncoded!=1, "When onePictureOnlyConstraintFlag is true, the number of frames to be encoded must be 1" );
  if (m_profile != Profile::NONE)
  {
    const ProfileFeatures *features = ProfileFeatures::getProfileFeatures(m_profile);
    CHECK(features->profile != m_profile, "Profile not found");
    xConfirmPara(m_level == Level::LEVEL15_5 && !features->canUseLevel15p5, "Profile does not support level 15.5");
  }

  xConfirmPara( m_iQP < -6 * (m_internalBitDepth[CHANNEL_TYPE_LUMA] - 8) || m_iQP > MAX_QP, "QP exceeds supported range (-QpBDOffsety to 63)" );
#if W0038_DB_OPT
  xConfirmPara( m_deblockingFilterMetric!=0 && (m_deblockingFilterDisable || m_deblockingFilterOffsetInPPS), "If DeblockingFilterMetric is non-zero then both LoopFilterDisable and LoopFilterOffsetInPPS must be 0");
#else
  xConfirmPara( m_DeblockingFilterMetric && (m_bLoopFilterDisable || m_loopFilterOffsetInPPS), "If DeblockingFilterMetric is true then both LoopFilterDisable and LoopFilterOffsetInPPS must be 0");
#endif
  xConfirmPara( m_deblockingFilterBetaOffsetDiv2 < -12 || m_deblockingFilterBetaOffsetDiv2 > 12,          "Loop Filter Beta Offset div. 2 exceeds supported range (-12 to 12" );
  xConfirmPara( m_deblockingFilterTcOffsetDiv2 < -12 || m_deblockingFilterTcOffsetDiv2 > 12,              "Loop Filter Tc Offset div. 2 exceeds supported range (-12 to 12)" );
  xConfirmPara( m_deblockingFilterCbBetaOffsetDiv2 < -12 || m_deblockingFilterCbBetaOffsetDiv2 > 12,      "Loop Filter Beta Offset div. 2 exceeds supported range (-12 to 12" );
  xConfirmPara( m_deblockingFilterCbTcOffsetDiv2 < -12 || m_deblockingFilterCbTcOffsetDiv2 > 12,          "Loop Filter Tc Offset div. 2 exceeds supported range (-12 to 12)" );
  xConfirmPara( m_deblockingFilterCrBetaOffsetDiv2 < -12 || m_deblockingFilterCrBetaOffsetDiv2 > 12,      "Loop Filter Beta Offset div. 2 exceeds supported range (-12 to 12" );
  xConfirmPara( m_deblockingFilterCrTcOffsetDiv2 < -12 || m_deblockingFilterCrTcOffsetDiv2 > 12,          "Loop Filter Tc Offset div. 2 exceeds supported range (-12 to 12)" );
  xConfirmPara( m_iSearchRange < 0 ,                                                        "Search Range must be more than 0" );
  xConfirmPara( m_bipredSearchRange < 0 ,                                                   "Bi-prediction refinement search range must be more than 0" );
  xConfirmPara( m_minSearchWindow < 0,                                                      "Minimum motion search window size for the adaptive window ME must be greater than or equal to 0" );
  xConfirmPara( m_iMaxDeltaQP > MAX_DELTA_QP,                                               "Absolute Delta QP exceeds supported range (0 to 7)" );
#if ENABLE_QPA
  xConfirmPara( m_bUsePerceptQPA && m_uiDeltaQpRD > 0,                                      "Perceptual QPA cannot be used together with slice-level multiple-QP optimization" );
#endif
#if SHARP_LUMA_DELTA_QP
  xConfirmPara( m_lumaLevelToDeltaQPMapping.mode && m_uiDeltaQpRD > 0,                      "Luma-level-based Delta QP cannot be used together with slice level multiple-QP optimization\n" );
  xConfirmPara( m_lumaLevelToDeltaQPMapping.mode && m_RCEnableRateControl,                  "Luma-level-based Delta QP cannot be used together with rate control\n" );
#endif
  if (m_lumaLevelToDeltaQPMapping.mode && m_lmcsEnabled)
  {
    msg(WARNING, "For HDR-PQ, LMCS should be used mutual-exclusively with Luma-level-based Delta QP. If use LMCS, turn lumaDQP off.\n");
    m_lumaLevelToDeltaQPMapping.mode = LUMALVL_TO_DQP_DISABLED;
  }
  if (!m_lmcsEnabled)
  {
    m_reshapeSignalType = RESHAPE_SIGNAL_NULL;
    m_intraCMD = 0;
  }
  if (m_lmcsEnabled && m_reshapeSignalType == RESHAPE_SIGNAL_PQ)
  {
    m_intraCMD = 1;
  }
  else if (m_lmcsEnabled && (m_reshapeSignalType == RESHAPE_SIGNAL_SDR || m_reshapeSignalType == RESHAPE_SIGNAL_HLG))
  {
    m_intraCMD = 0;
  }
  else
  {
    m_lmcsEnabled = false;
  }
  if (m_lmcsEnabled)
  {
    xConfirmPara(m_updateCtrl < 0, "Min. LMCS Update Control is 0");
    xConfirmPara(m_updateCtrl > 2, "Max. LMCS Update Control is 2");
    xConfirmPara(m_adpOption < 0, "Min. LMCS Adaptation Option is 0");
    xConfirmPara(m_adpOption > 4, "Max. LMCS Adaptation Option is 4");
    xConfirmPara(m_initialCW < 0, "Min. Initial Total Codeword is 0");
    xConfirmPara(m_initialCW > 1023, "Max. Initial Total Codeword is 1023");
    xConfirmPara(m_CSoffset < -7, "Min. LMCS Offset value is -7");
    xConfirmPara(m_CSoffset > 7, "Max. LMCS Offset value is 7");
    if (m_updateCtrl > 0 && m_adpOption > 2) { m_adpOption -= 2; }
  }

  if (m_ctiSEIEnabled)
  {
    xConfirmPara(m_ctiSEINumberChromaLut < 0 || m_ctiSEINumberChromaLut > 2, "CTI number of chroma LUTs is out of range");
  }
  xConfirmPara( m_cbQpOffset < -12,   "Min. Chroma Cb QP Offset is -12" );
  xConfirmPara( m_cbQpOffset >  12,   "Max. Chroma Cb QP Offset is  12" );
  xConfirmPara( m_crQpOffset < -12,   "Min. Chroma Cr QP Offset is -12" );
  xConfirmPara( m_crQpOffset >  12,   "Max. Chroma Cr QP Offset is  12" );
  xConfirmPara( m_cbQpOffsetDualTree < -12,   "Min. Chroma Cb QP Offset for dual tree is -12" );
  xConfirmPara( m_cbQpOffsetDualTree >  12,   "Max. Chroma Cb QP Offset for dual tree is  12" );
  xConfirmPara( m_crQpOffsetDualTree < -12,   "Min. Chroma Cr QP Offset for dual tree is -12" );
  xConfirmPara( m_crQpOffsetDualTree >  12,   "Max. Chroma Cr QP Offset for dual tree is  12" );
  if (m_dualTree && (m_chromaFormatIDC == CHROMA_400))
  {
    msg( WARNING, "****************************************************************************\n");
    msg( WARNING, "** WARNING: --DualITree has been disabled because the chromaFormat is 400 **\n");
    msg( WARNING, "****************************************************************************\n");
    m_dualTree = false;
  }
  if (m_alf)
  {
    xConfirmPara(m_alfStrengthLuma < 0.0, "ALFStrengthLuma is less than 0. Valid range is 0.0 <= ALFStrengthLuma <= 1.0");
    xConfirmPara(m_alfStrengthLuma > 1.0, "ALFStrengthLuma is greater than 1. Valid range is 0.0 <= ALFStrengthLuma <= 1.0");
  }
  if (m_ccalf)
  {
    xConfirmPara(m_ccalfStrength < 0.0, "CCALFStrength is less than 0. Valid range is 0.0 <= CCALFStrength <= 1.0");
    xConfirmPara(m_ccalfStrength > 1.0, "CCALFStrength is greater than 1. Valid range is 0.0 <= CCALFStrength <= 1.0");
  }
  if (m_alf)
  {
    xConfirmPara(m_alfStrengthChroma < 0.0, "ALFStrengthChroma is less than 0. Valid range is 0.0 <= ALFStrengthChroma <= 1.0");
    xConfirmPara(m_alfStrengthChroma > 1.0, "ALFStrengthChroma is greater than 1. Valid range is 0.0 <= ALFStrengthChroma <= 1.0");
    xConfirmPara(m_alfStrengthTargetLuma < 0.0, "ALFStrengthTargetLuma is less than 0. Valid range is 0.0 <= ALFStrengthTargetLuma <= 1.0");
    xConfirmPara(m_alfStrengthTargetLuma > 1.0, "ALFStrengthTargetLuma is greater than 1. Valid range is 0.0 <= ALFStrengthTargetLuma <= 1.0");
    xConfirmPara(m_alfStrengthTargetChroma < 0.0, "ALFStrengthTargetChroma is less than 0. Valid range is 0.0 <= ALFStrengthTargetChroma <= 1.0");
    xConfirmPara(m_alfStrengthTargetChroma > 1.0, "ALFStrengthTargetChroma is greater than 1. Valid range is 0.0 <= ALFStrengthTargetChroma <= 1.0");
  }
  if (m_ccalf)
  {
    xConfirmPara(m_ccalfStrengthTarget < 0.0, "CCALFStrengthTarget is less than 0. Valid range is 0.0 <= CCALFStrengthTarget <= 1.0");
    xConfirmPara(m_ccalfStrengthTarget > 1.0, "CCALFStrengthTarget is greater than 1. Valid range is 0.0 <= CCALFStrengthTarget <= 1.0");
  }
  if (m_ccalf && (m_chromaFormatIDC == CHROMA_400))
  {
    msg( WARNING, "****************************************************************************\n");
    msg( WARNING, "** WARNING: --CCALF has been disabled because the chromaFormat is 400     **\n");
    msg( WARNING, "****************************************************************************\n");
    m_ccalf = false;
  }
  if (m_JointCbCrMode && (m_chromaFormatIDC == CHROMA_400))
  {
    msg( WARNING, "****************************************************************************\n");
    msg( WARNING, "** WARNING: --JointCbCr has been disabled because the chromaFormat is 400 **\n");
    msg( WARNING, "****************************************************************************\n");
    m_JointCbCrMode = false;
  }
  if (m_JointCbCrMode)
  {
    xConfirmPara( m_cbCrQpOffset < -12, "Min. Joint Cb-Cr QP Offset is -12");
    xConfirmPara( m_cbCrQpOffset >  12, "Max. Joint Cb-Cr QP Offset is  12");
    xConfirmPara( m_cbCrQpOffsetDualTree < -12, "Min. Joint Cb-Cr QP Offset for dual tree is -12");
    xConfirmPara( m_cbCrQpOffsetDualTree >  12, "Max. Joint Cb-Cr QP Offset for dual tree is  12");
  }
  xConfirmPara( m_iQPAdaptationRange <= 0,                                                  "QP Adaptation Range must be more than 0" );
  if (m_iDecodingRefreshType == 2)
  {
    xConfirmPara( m_iIntraPeriod > 0 && m_iIntraPeriod <= m_iGOPSize ,                      "Intra period must be larger than GOP size for periodic IDR pictures");
  }
  xConfirmPara( m_uiMaxCUWidth > MAX_CU_SIZE,                                               "MaxCUWith exceeds predefined MAX_CU_SIZE limit");

  const int minCuSize = 1 << m_log2MinCuSize;
  xConfirmPara( m_uiMinQT[0] > 64,                                                          "Min Luma QT size in I slices should be smaller than or equal to 64");
  xConfirmPara( m_uiMinQT[1] > 64,                                                          "Min Luma QT size in non-I slices should be smaller than or equal to 64");
  xConfirmPara( m_uiMaxBT[2] > 64,                                                          "Maximum BT size for chroma block in I slice should be smaller than or equal to 64");
  xConfirmPara( m_uiMaxTT[0] > 64,                                                          "Maximum TT size for luma block in I slice should be smaller than or equal to 64");
  xConfirmPara( m_uiMaxTT[1] > 64,                                                          "Maximum TT size for luma block in non-I slice should be smaller than or equal to 64");
  xConfirmPara( m_uiMaxTT[2] > 64,                                                          "Maximum TT size for chroma block in I slice should be smaller than or equal to 64");
  xConfirmPara( m_uiMinQT[0] < minCuSize,                                                   "Min Luma QT size in I slices should be larger than or equal to minCuSize");
  xConfirmPara( m_uiMinQT[1] < minCuSize,                                                   "Min Luma QT size in non-I slices should be larger than or equal to minCuSize");
  xConfirmPara((m_sourceWidth % minCuSize ) || (m_sourceHeight % minCuSize),              "Picture width or height is not a multiple of minCuSize");
  const int minDiff = (int)floorLog2(m_uiMinQT[2]) - std::max(MIN_CU_LOG2, (int)m_log2MinCuSize - (int)getChannelTypeScaleX(CHANNEL_TYPE_CHROMA, m_chromaFormatIDC));
  xConfirmPara( minDiff < 0 ,                                                               "Min Chroma QT size in I slices is smaller than Min Luma CU size even considering color format");
  xConfirmPara( (m_uiMinQT[2] << (int)getChannelTypeScaleX(CHANNEL_TYPE_CHROMA, m_chromaFormatIDC)) > std::min(64, (int)m_uiCTUSize),
                                                                                            "Min Chroma QT size in I slices should be smaller than or equal to CTB size or CB size after implicit split of CTB");
  xConfirmPara( m_uiCTUSize < 32,                                                           "CTUSize must be greater than or equal to 32");
  xConfirmPara( m_uiCTUSize > 128,                                                          "CTUSize must be less than or equal to 128");
  xConfirmPara( m_uiCTUSize != 32 && m_uiCTUSize != 64 && m_uiCTUSize != 128,               "CTUSize must be a power of 2 (32, 64, or 128)");
  xConfirmPara( m_uiMaxCUWidth < 16,                                                        "Maximum partition width size should be larger than or equal to 16");
  xConfirmPara( m_uiMaxCUHeight < 16,                                                       "Maximum partition height size should be larger than or equal to 16");
  xConfirmPara( m_uiMaxBT[0] < m_uiMinQT[0],                                                "Maximum BT size for luma block in I slice should be larger than minimum QT size");
  xConfirmPara( m_uiMaxBT[0] > m_uiCTUSize,                                                 "Maximum BT size for luma block in I slice should be smaller than or equal to CTUSize");
  xConfirmPara( m_uiMaxBT[1] < m_uiMinQT[1],                                                "Maximum BT size for luma block in non I slice should be larger than minimum QT size");
  xConfirmPara( m_uiMaxBT[1] > m_uiCTUSize,                                                 "Maximum BT size for luma block in non I slice should be smaller than or equal to CTUSize");
  xConfirmPara( m_uiMaxBT[2] < (m_uiMinQT[2] << (int)getChannelTypeScaleX(CHANNEL_TYPE_CHROMA, m_chromaFormatIDC)),
                                                                                            "Maximum BT size for chroma block in I slice should be larger than minimum QT size");
  xConfirmPara( m_uiMaxBT[2] > m_uiCTUSize,                                                 "Maximum BT size for chroma block in I slice should be smaller than or equal to CTUSize");
  xConfirmPara( m_uiMaxTT[0] < m_uiMinQT[0],                                                "Maximum TT size for luma block in I slice should be larger than minimum QT size");
  xConfirmPara( m_uiMaxTT[0] > m_uiCTUSize,                                                 "Maximum TT size for luma block in I slice should be smaller than or equal to CTUSize");
  xConfirmPara( m_uiMaxTT[1] < m_uiMinQT[1],                                                "Maximum TT size for luma block in non I slice should be larger than minimum QT size");
  xConfirmPara( m_uiMaxTT[1] > m_uiCTUSize,                                                 "Maximum TT size for luma block in non I slice should be smaller than or equal to CTUSize");
  xConfirmPara( m_uiMaxTT[2] < (m_uiMinQT[2] << (int)getChannelTypeScaleX(CHANNEL_TYPE_CHROMA, m_chromaFormatIDC)),
                                                                                            "Maximum TT size for chroma block in I slice should be larger than minimum QT size");
  xConfirmPara( m_uiMaxTT[2] > m_uiCTUSize,                                                 "Maximum TT size for chroma block in I slice should be smaller than or equal to CTUSize");
  xConfirmPara( (m_sourceWidth  % (std::max(8u, m_log2MinCuSize))) != 0,                   "Resulting coded frame width must be a multiple of Max(8, the minimum CU size)");
  xConfirmPara( (m_sourceHeight % (std::max(8u, m_log2MinCuSize))) != 0,                   "Resulting coded frame height must be a multiple of Max(8, the minimum CU size)");
  if (m_uiMaxMTTHierarchyDepthI == 0)
  {
    xConfirmPara(m_uiMaxBT[0] != m_uiMinQT[0], "MaxBTLumaISlice shall be equal to MinQTLumaISlice when MaxMTTHierarchyDepthISliceL is 0.");
    xConfirmPara(m_uiMaxTT[0] != m_uiMinQT[0], "MaxTTLumaISlice shall be equal to MinQTLumaISlice when MaxMTTHierarchyDepthISliceL is 0.");
  }
  if (m_uiMaxMTTHierarchyDepthIChroma == 0)
  {
    xConfirmPara(m_uiMaxBT[2] != (m_uiMinQT[2] << (int)getChannelTypeScaleX(CHANNEL_TYPE_CHROMA, m_chromaFormatIDC)), "MaxBTChromaISlice shall be equal to MinQTChromaISlice when MaxMTTHierarchyDepthISliceC is 0.");
    xConfirmPara(m_uiMaxTT[2] != (m_uiMinQT[2] << (int)getChannelTypeScaleX(CHANNEL_TYPE_CHROMA, m_chromaFormatIDC)), "MaxTTChromaISlice shall be equal to MinQTChromaISlice when MaxMTTHierarchyDepthISliceC is 0.");
  }
  if (m_uiMaxMTTHierarchyDepth == 0)
  {
    xConfirmPara(m_uiMaxBT[1] != m_uiMinQT[1], "MaxBTNonISlice shall be equal to MinQTNonISlice when MaxMTTHierarchyDepth is 0.");
    xConfirmPara(m_uiMaxTT[1] != m_uiMinQT[1], "MaxTTNonISlice shall be equal to MinQTNonISlice when MaxMTTHierarchyDepth is 0.");
  }
  xConfirmPara( m_log2MaxTbSize > 6, "Log2MaxTbSize must be 6 or smaller." );
  xConfirmPara( m_log2MaxTbSize < 5,  "Log2MaxTbSize must be 5 or greater." );
  xConfirmPara( m_maxNumMergeCand < 1,  "MaxNumMergeCand must be 1 or greater.");
  xConfirmPara( m_maxNumMergeCand > MRG_MAX_NUM_CANDS, "MaxNumMergeCand must be no more than MRG_MAX_NUM_CANDS." );
  xConfirmPara( m_maxNumGeoCand > GEO_MAX_NUM_UNI_CANDS, "MaxNumGeoCand must be no more than GEO_MAX_NUM_UNI_CANDS." );
  xConfirmPara( m_maxNumGeoCand > m_maxNumMergeCand, "MaxNumGeoCand must be no more than MaxNumMergeCand." );
  xConfirmPara( 0 < m_maxNumGeoCand && m_maxNumGeoCand < 2, "MaxNumGeoCand must be no less than 2 unless MaxNumGeoCand is 0." );
  xConfirmPara( m_maxNumIBCMergeCand < 1, "MaxNumIBCMergeCand must be 1 or greater." );
  xConfirmPara( m_maxNumIBCMergeCand > IBC_MRG_MAX_NUM_CANDS, "MaxNumIBCMergeCand must be no more than IBC_MRG_MAX_NUM_CANDS." );
  xConfirmPara(m_maxNumAffineMergeCand < (m_sbTmvpEnableFlag ? 1 : 0),
               "MaxNumAffineMergeCand must be greater than 0 when SbTMVP is enabled");
  xConfirmPara( m_maxNumAffineMergeCand > AFFINE_MRG_MAX_NUM_CANDS, "MaxNumAffineMergeCand must be no more than AFFINE_MRG_MAX_NUM_CANDS." );
  if ( m_Affine == 0 )
  {
    m_maxNumAffineMergeCand = m_sbTmvpEnableFlag ? 1 : 0;
    if (m_PROF) msg(WARNING, "PROF is forcefully disabled when Affine is off \n");
    m_PROF = false;
  }

  xConfirmPara( m_MTS < 0 || m_MTS > 3, "MTS must be greater than 0 smaller than 4" );
  xConfirmPara( m_MTSIntraMaxCand < 0 || m_MTSIntraMaxCand > 5, "m_MTSIntraMaxCand must be greater than 0 and smaller than 6" );
  xConfirmPara( m_MTSInterMaxCand < 0 || m_MTSInterMaxCand > 5, "m_MTSInterMaxCand must be greater than 0 and smaller than 6" );
  xConfirmPara( m_MTS != 0 && m_MTSImplicit != 0, "Both explicit and implicit MTS cannot be enabled at the same time" );

  if (m_useBDPCM)
  {
    xConfirmPara(!m_useTransformSkip, "BDPCM cannot be used when transform skip is disabled.");
  }

  if (m_tsrcRicePresentFlag)
  {
    xConfirmPara(!m_useTransformSkip, "TSRCRicePresent cannot be enabled when transform skip is disabled.");
  }

  if (!m_alf)
  {
    xConfirmPara( m_ccalf, "CCALF cannot be enabled when ALF is disabled" );
  }

#if JVET_X0143_ALF_APS_CHANGES
  if (m_maxNumAlfAps == 0) 
  {
    xConfirmPara(m_ccalf, "CCALF cannot be enabled when ALF APS is disabled");
  }
#endif

  xConfirmPara( m_sourceWidth  % SPS::getWinUnitX(m_chromaFormatIDC) != 0, "Picture width must be an integer multiple of the specified chroma subsampling");
  xConfirmPara( m_sourceHeight % SPS::getWinUnitY(m_chromaFormatIDC) != 0, "Picture height must be an integer multiple of the specified chroma subsampling");

  xConfirmPara( m_sourcePadding[0] % SPS::getWinUnitX(m_chromaFormatIDC) != 0, "Horizontal padding must be an integer multiple of the specified chroma subsampling");
  xConfirmPara( m_sourcePadding[1] % SPS::getWinUnitY(m_chromaFormatIDC) != 0, "Vertical padding must be an integer multiple of the specified chroma subsampling");

  xConfirmPara( m_confWinLeft   % SPS::getWinUnitX(m_chromaFormatIDC) != 0, "Left conformance window offset must be an integer multiple of the specified chroma subsampling");
  xConfirmPara( m_confWinRight  % SPS::getWinUnitX(m_chromaFormatIDC) != 0, "Right conformance window offset must be an integer multiple of the specified chroma subsampling");
  xConfirmPara( m_confWinTop    % SPS::getWinUnitY(m_chromaFormatIDC) != 0, "Top conformance window offset must be an integer multiple of the specified chroma subsampling");
  xConfirmPara( m_confWinBottom % SPS::getWinUnitY(m_chromaFormatIDC) != 0, "Bottom conformance window offset must be an integer multiple of the specified chroma subsampling");


  // max CU width and height should be power of 2
  uint32_t ui = m_uiMaxCUWidth;
  while(ui)
  {
    ui >>= 1;
    if( (ui & 1) == 1)
    {
      xConfirmPara( ui != 1 , "Width should be 2^n");
    }
  }
  ui = m_uiMaxCUHeight;
  while(ui)
  {
    ui >>= 1;
    if( (ui & 1) == 1)
    {
      xConfirmPara( ui != 1 , "Height should be 2^n");
    }
  }

  /* if this is an intra-only sequence, ie IntraPeriod=1, don't verify the GOP structure
   * This permits the ability to omit a GOP structure specification */
  if (m_iIntraPeriod == 1 && m_GOPList[0].m_POC == -1)
  {
    m_GOPList[0] = GOPEntry();
    m_GOPList[0].m_QPFactor = 1;
    m_GOPList[0].m_betaOffsetDiv2 = 0;
    m_GOPList[0].m_tcOffsetDiv2 = 0;
    m_GOPList[0].m_CbBetaOffsetDiv2 = 0;
    m_GOPList[0].m_CbTcOffsetDiv2 = 0;
    m_GOPList[0].m_CrBetaOffsetDiv2 = 0;
    m_GOPList[0].m_CrTcOffsetDiv2 = 0;
    m_GOPList[0].m_POC = 1;
    m_RPLList0[0] = RPLEntry();
    m_RPLList1[0] = RPLEntry();
    m_RPLList0[0].m_POC = m_RPLList1[0].m_POC = 1;
    m_RPLList0[0].m_numRefPicsActive = 4;
    m_GOPList[0].m_numRefPicsActive0 = 4;
  }
  else
  {
    xConfirmPara( m_intraOnlyConstraintFlag, "IntraOnlyConstraintFlag cannot be 1 for inter sequences");
  }

  int multipleFactor = m_compositeRefEnabled ? 2 : 1;
  bool verifiedGOP=false;
  bool errorGOP=false;
  int checkGOP=1;
  int numRefs = m_isField ? 2 : 1;
  int refList[MAX_NUM_REF_PICS+1] = {0};
  if(m_isField)
  {
    refList[1] = 1;
  }
  bool isOK[MAX_GOP];
  for(int i=0; i<MAX_GOP; i++)
  {
    isOK[i]=false;
  }
  int numOK=0;
  xConfirmPara( m_iIntraPeriod >=0&&(m_iIntraPeriod%m_iGOPSize!=0), "Intra period must be a multiple of GOPSize, or -1" );

  for(int i=0; i<m_iGOPSize; i++)
  {
    if (m_GOPList[i].m_POC == m_iGOPSize * multipleFactor)
    {
      xConfirmPara( m_GOPList[i].m_temporalId!=0 , "The last frame in each GOP must have temporal ID = 0 " );
    }
  }

  if ( (m_iIntraPeriod != 1) && !m_deblockingFilterOffsetInPPS && (!m_deblockingFilterDisable) )
  {
    for(int i=0; i<m_iGOPSize; i++)
    {
      xConfirmPara( (m_GOPList[i].m_betaOffsetDiv2 + m_deblockingFilterBetaOffsetDiv2) < -12 || (m_GOPList[i].m_betaOffsetDiv2 + m_deblockingFilterBetaOffsetDiv2) > 12, "Loop Filter Beta Offset div. 2 for one of the GOP entries exceeds supported range (-12 to 12)" );
      xConfirmPara( (m_GOPList[i].m_tcOffsetDiv2 + m_deblockingFilterTcOffsetDiv2) < -12 || (m_GOPList[i].m_tcOffsetDiv2 + m_deblockingFilterTcOffsetDiv2) > 12, "Loop Filter Tc Offset div. 2 for one of the GOP entries exceeds supported range (-12 to 12)" );
      xConfirmPara( (m_GOPList[i].m_CbBetaOffsetDiv2 + m_deblockingFilterCbBetaOffsetDiv2) < -12 || (m_GOPList[i].m_CbBetaOffsetDiv2 + m_deblockingFilterCbBetaOffsetDiv2) > 12, "Loop Filter Beta Offset div. 2 for one of the GOP entries exceeds supported range (-12 to 12)" );
      xConfirmPara( (m_GOPList[i].m_CbTcOffsetDiv2 + m_deblockingFilterCbTcOffsetDiv2) < -12 || (m_GOPList[i].m_CbTcOffsetDiv2 + m_deblockingFilterCbTcOffsetDiv2) > 12, "Loop Filter Tc Offset div. 2 for one of the GOP entries exceeds supported range (-12 to 12)" );
      xConfirmPara( (m_GOPList[i].m_CrBetaOffsetDiv2 + m_deblockingFilterCrBetaOffsetDiv2) < -12 || (m_GOPList[i].m_CrBetaOffsetDiv2 + m_deblockingFilterCrBetaOffsetDiv2) > 12, "Loop Filter Beta Offset div. 2 for one of the GOP entries exceeds supported range (-12 to 12)" );
      xConfirmPara( (m_GOPList[i].m_CrTcOffsetDiv2 + m_deblockingFilterCrTcOffsetDiv2) < -12 || (m_GOPList[i].m_CrTcOffsetDiv2 + m_deblockingFilterCrTcOffsetDiv2) > 12, "Loop Filter Tc Offset div. 2 for one of the GOP entries exceeds supported range (-12 to 12)" );
    }
  }

#if W0038_CQP_ADJ
  for(int i=0; i<m_iGOPSize; i++)
  {
    xConfirmPara( abs(m_GOPList[i].m_CbQPoffset               ) > 12, "Cb QP Offset for one of the GOP entries exceeds supported range (-12 to 12)" );
    xConfirmPara( abs(m_GOPList[i].m_CbQPoffset + m_cbQpOffset) > 12, "Cb QP Offset for one of the GOP entries, when combined with the PPS Cb offset, exceeds supported range (-12 to 12)" );
    xConfirmPara( abs(m_GOPList[i].m_CrQPoffset               ) > 12, "Cr QP Offset for one of the GOP entries exceeds supported range (-12 to 12)" );
    xConfirmPara( abs(m_GOPList[i].m_CrQPoffset + m_crQpOffset) > 12, "Cr QP Offset for one of the GOP entries, when combined with the PPS Cr offset, exceeds supported range (-12 to 12)" );
  }
  xConfirmPara( abs(m_sliceChromaQpOffsetIntraOrPeriodic[0]                 ) > 12, "Intra/periodic Cb QP Offset exceeds supported range (-12 to 12)" );
  xConfirmPara( abs(m_sliceChromaQpOffsetIntraOrPeriodic[0]  + m_cbQpOffset ) > 12, "Intra/periodic Cb QP Offset, when combined with the PPS Cb offset, exceeds supported range (-12 to 12)" );
  xConfirmPara( abs(m_sliceChromaQpOffsetIntraOrPeriodic[1]                 ) > 12, "Intra/periodic Cr QP Offset exceeds supported range (-12 to 12)" );
  xConfirmPara( abs(m_sliceChromaQpOffsetIntraOrPeriodic[1]  + m_crQpOffset ) > 12, "Intra/periodic Cr QP Offset, when combined with the PPS Cr offset, exceeds supported range (-12 to 12)" );
#endif

  xConfirmPara( m_maxSublayers < 1 || m_maxSublayers > 7, "MaxSublayers must be in range [1..7]" );


  xConfirmPara( m_fastLocalDualTreeMode < 0 || m_fastLocalDualTreeMode > 2, "FastLocalDualTreeMode must be in range [0..2]" );

  int extraRPLs = 0;
  bool hasFutureRef = false;
  //start looping through frames in coding order until we can verify that the GOP structure is correct.
  while (!verifiedGOP && !errorGOP)
  {
    int curGOP = (checkGOP - 1) % m_iGOPSize;
    int curPOC = ((checkGOP - 1) / m_iGOPSize)*m_iGOPSize * multipleFactor + m_RPLList0[curGOP].m_POC;
    if (m_RPLList0[curGOP].m_POC < 0 || m_RPLList1[curGOP].m_POC < 0)
    {
      msg(WARNING, "\nError: found fewer Reference Picture Sets than GOPSize\n");
      errorGOP = true;
    }
    else
    {
      //check that all reference pictures are available, or have a POC < 0 meaning they might be available in the next GOP.
      bool beforeI = false;
      for (int i = 0; i< m_RPLList0[curGOP].m_numRefPics; i++)
      {
        int absPOC = curPOC - m_RPLList0[curGOP].m_deltaRefPics[i];
        if (absPOC < 0)
        {
          beforeI = true;
        }
        else
        {
          bool found = false;
          for (int j = 0; j<numRefs; j++)
          {
            if (refList[j] == absPOC)
            {
              found = true;
              for (int k = 0; k<m_iGOPSize; k++)
              {
                if (absPOC % (m_iGOPSize * multipleFactor) == m_RPLList0[k].m_POC % (m_iGOPSize * multipleFactor))
                {
                  if (m_RPLList0[k].m_temporalId == m_RPLList0[curGOP].m_temporalId)
                  {
                    m_RPLList0[k].m_refPic = true;
                  }
                }
              }
            }
          }
          if (!found)
          {
            msg(WARNING, "\nError: ref pic %d is not available for GOP frame %d\n", m_RPLList0[curGOP].m_deltaRefPics[i], curGOP + 1);
            errorGOP = true;
          }
        }
      }
      if (!beforeI && !errorGOP)
      {
        //all ref frames were present
        if (!isOK[curGOP])
        {
          numOK++;
          isOK[curGOP] = true;
          if (numOK == m_iGOPSize)
          {
            verifiedGOP = true;
          }
        }
      }
      else
      {
        //create a new RPLEntry for this frame containing all the reference pictures that were available (POC > 0)
        m_RPLList0[m_iGOPSize + extraRPLs] = m_RPLList0[curGOP];
        m_RPLList1[m_iGOPSize + extraRPLs] = m_RPLList1[curGOP];
        int newRefs0 = 0;
        for (int i = 0; i< m_RPLList0[curGOP].m_numRefPics; i++)
        {
          int absPOC = curPOC - m_RPLList0[curGOP].m_deltaRefPics[i];
          if (absPOC >= 0)
          {
            m_RPLList0[m_iGOPSize + extraRPLs].m_deltaRefPics[newRefs0] = m_RPLList0[curGOP].m_deltaRefPics[i];
            newRefs0++;
          }
        }
        int numPrefRefs0 = m_RPLList0[curGOP].m_numRefPicsActive;

        int newRefs1 = 0;
        for (int i = 0; i< m_RPLList1[curGOP].m_numRefPics; i++)
        {
          int absPOC = curPOC - m_RPLList1[curGOP].m_deltaRefPics[i];
          if (absPOC >= 0)
          {
            m_RPLList1[m_iGOPSize + extraRPLs].m_deltaRefPics[newRefs1] = m_RPLList1[curGOP].m_deltaRefPics[i];
            newRefs1++;
          }
        }
        int numPrefRefs1 = m_RPLList1[curGOP].m_numRefPicsActive;

        for (int offset = -1; offset>-checkGOP; offset--)
        {
          //step backwards in coding order and include any extra available pictures we might find useful to replace the ones with POC < 0.
          int offGOP = (checkGOP - 1 + offset) % m_iGOPSize;
          int offPOC = ((checkGOP - 1 + offset) / m_iGOPSize)*(m_iGOPSize * multipleFactor) + m_RPLList0[offGOP].m_POC;
          if (offPOC >= 0 && m_RPLList0[offGOP].m_temporalId <= m_RPLList0[curGOP].m_temporalId)
          {
            bool newRef = false;
            for (int i = 0; i<(newRefs0 + newRefs1); i++)
            {
              if (refList[i] == offPOC)
              {
                newRef = true;
              }
            }
            for (int i = 0; i<newRefs0; i++)
            {
              if (m_RPLList0[m_iGOPSize + extraRPLs].m_deltaRefPics[i] == curPOC - offPOC)
              {
                newRef = false;
              }
            }
            if (newRef)
            {
              int insertPoint = newRefs0;
              //this picture can be added, find appropriate place in list and insert it.
              if (m_RPLList0[offGOP].m_temporalId == m_RPLList0[curGOP].m_temporalId)
              {
                m_RPLList0[offGOP].m_refPic = true;
              }
              for (int j = 0; j<newRefs0; j++)
              {
                if (m_RPLList0[m_iGOPSize + extraRPLs].m_deltaRefPics[j] > curPOC - offPOC && curPOC - offPOC > 0)
                {
                  insertPoint = j;
                  break;
                }
              }
              int prev = curPOC - offPOC;
              for (int j = insertPoint; j<newRefs0 + 1; j++)
              {
                int newPrev = m_RPLList0[m_iGOPSize + extraRPLs].m_deltaRefPics[j];
                m_RPLList0[m_iGOPSize + extraRPLs].m_deltaRefPics[j] = prev;
                prev = newPrev;
              }
              newRefs0++;
            }
          }
          if (newRefs0 >= numPrefRefs0)
          {
            break;
          }
        }

        for (int offset = -1; offset>-checkGOP; offset--)
        {
          //step backwards in coding order and include any extra available pictures we might find useful to replace the ones with POC < 0.
          int offGOP = (checkGOP - 1 + offset) % m_iGOPSize;
          int offPOC = ((checkGOP - 1 + offset) / m_iGOPSize)*(m_iGOPSize * multipleFactor) + m_RPLList1[offGOP].m_POC;
          if (offPOC >= 0 && m_RPLList1[offGOP].m_temporalId <= m_RPLList1[curGOP].m_temporalId)
          {
            bool newRef = false;
            for (int i = 0; i<(newRefs0 + newRefs1); i++)
            {
              if (refList[i] == offPOC)
              {
                newRef = true;
              }
            }
            for (int i = 0; i<newRefs1; i++)
            {
              if (m_RPLList1[m_iGOPSize + extraRPLs].m_deltaRefPics[i] == curPOC - offPOC)
              {
                newRef = false;
              }
            }
            if (newRef)
            {
              int insertPoint = newRefs1;
              //this picture can be added, find appropriate place in list and insert it.
              if (m_RPLList1[offGOP].m_temporalId == m_RPLList1[curGOP].m_temporalId)
              {
                m_RPLList1[offGOP].m_refPic = true;
              }
              for (int j = 0; j<newRefs1; j++)
              {
                if (m_RPLList1[m_iGOPSize + extraRPLs].m_deltaRefPics[j] > curPOC - offPOC && curPOC - offPOC > 0)
                {
                  insertPoint = j;
                  break;
                }
              }
              int prev = curPOC - offPOC;
              for (int j = insertPoint; j<newRefs1 + 1; j++)
              {
                int newPrev = m_RPLList1[m_iGOPSize + extraRPLs].m_deltaRefPics[j];
                m_RPLList1[m_iGOPSize + extraRPLs].m_deltaRefPics[j] = prev;
                prev = newPrev;
              }
              newRefs1++;
            }
          }
          if (newRefs1 >= numPrefRefs1)
          {
            break;
          }
        }

        m_RPLList0[m_iGOPSize + extraRPLs].m_numRefPics = newRefs0;
        m_RPLList0[m_iGOPSize + extraRPLs].m_numRefPicsActive = min(m_RPLList0[m_iGOPSize + extraRPLs].m_numRefPics, m_RPLList0[m_iGOPSize + extraRPLs].m_numRefPicsActive);
        m_RPLList1[m_iGOPSize + extraRPLs].m_numRefPics = newRefs1;
        m_RPLList1[m_iGOPSize + extraRPLs].m_numRefPicsActive = min(m_RPLList1[m_iGOPSize + extraRPLs].m_numRefPics, m_RPLList1[m_iGOPSize + extraRPLs].m_numRefPicsActive);
        curGOP = m_iGOPSize + extraRPLs;
        extraRPLs++;
      }
      numRefs = 0;
      for (int i = 0; i< m_RPLList0[curGOP].m_numRefPics; i++)
      {
        int absPOC = curPOC - m_RPLList0[curGOP].m_deltaRefPics[i];
        hasFutureRef |= (m_RPLList0[curGOP].m_deltaRefPics[i] < 0);
        if (absPOC >= 0)
        {
          refList[numRefs] = absPOC;
          numRefs++;
        }
      }
      for (int i = 0; i< m_RPLList1[curGOP].m_numRefPics; i++)
      {
        int absPOC = curPOC - m_RPLList1[curGOP].m_deltaRefPics[i];
        hasFutureRef |= (m_RPLList1[curGOP].m_deltaRefPics[i] < 0);
        if (absPOC >= 0)
        {
          bool alreadyExist = false;
          for (int j = 0; !alreadyExist && j < numRefs; j++)
          {
            if (refList[j] == absPOC)
            {
              alreadyExist = true;
            }
          }
          if (!alreadyExist)
          {
            refList[numRefs] = absPOC;
            numRefs++;
          }
        }
      }
      refList[numRefs] = curPOC;
      numRefs++;
    }
    checkGOP++;
  }
  m_isLowDelay = !hasFutureRef && m_iIntraPeriod != 1;
  xConfirmPara(errorGOP, "Invalid GOP structure given");

  m_maxTempLayer = 1;

  for(int i=0; i<m_iGOPSize; i++)
  {
    if(m_GOPList[i].m_temporalId >= m_maxTempLayer)
    {
      m_maxTempLayer = m_GOPList[i].m_temporalId+1;
    }
    xConfirmPara(m_GOPList[i].m_sliceType!='B' && m_GOPList[i].m_sliceType!='P' && m_GOPList[i].m_sliceType!='I', "Slice type must be equal to B or P or I");
  }
  for(int i=0; i<MAX_TLAYER; i++)
  {
    m_maxNumReorderPics[i] = 0;
    m_maxDecPicBuffering[i] = 1;
  }
  for(int i=0; i<m_iGOPSize; i++)
  {
    int numRefPic = m_RPLList0[i].m_numRefPics;
    for (int tmp = 0; tmp < m_RPLList1[i].m_numRefPics; tmp++)
    {
      bool notSame = true;
      for (int jj = 0; notSame && jj < m_RPLList0[i].m_numRefPics; jj++)
      {
        if (m_RPLList1[i].m_deltaRefPics[tmp] == m_RPLList0[i].m_deltaRefPics[jj]) notSame = false;
      }
      if (notSame) numRefPic++;
    }
    if (numRefPic + 1 > m_maxDecPicBuffering[m_GOPList[i].m_temporalId])
    {
      m_maxDecPicBuffering[m_GOPList[i].m_temporalId] = numRefPic + 1;
    }
    int highestDecodingNumberWithLowerPOC = 0;
    for(int j=0; j<m_iGOPSize; j++)
    {
      if(m_GOPList[j].m_POC <= m_GOPList[i].m_POC)
      {
        highestDecodingNumberWithLowerPOC = j;
      }
    }
    int numReorder = 0;
    for(int j=0; j<highestDecodingNumberWithLowerPOC; j++)
    {
      if(m_GOPList[j].m_temporalId <= m_GOPList[i].m_temporalId &&
        m_GOPList[j].m_POC > m_GOPList[i].m_POC)
      {
        numReorder++;
      }
    }
    if(numReorder > m_maxNumReorderPics[m_GOPList[i].m_temporalId])
    {
      m_maxNumReorderPics[m_GOPList[i].m_temporalId] = numReorder;
    }
  }

  for(int i=0; i<MAX_TLAYER-1; i++)
  {
    // a lower layer can not have higher value of m_maxNumReorderPics than a higher layer
    if(m_maxNumReorderPics[i+1] < m_maxNumReorderPics[i])
    {
      m_maxNumReorderPics[i+1] = m_maxNumReorderPics[i];
    }
    // the value of dpb_max_num_reorder_pics[ i ] shall be in the range of 0 to max_dec_pic_buffering[ i ] - 1, inclusive
    if(m_maxNumReorderPics[i] > m_maxDecPicBuffering[i] - 1)
    {
      m_maxDecPicBuffering[i] = m_maxNumReorderPics[i] + 1;
    }
    // a lower layer can not have higher value of m_uiMaxDecPicBuffering than a higher layer
    if(m_maxDecPicBuffering[i+1] < m_maxDecPicBuffering[i])
    {
      m_maxDecPicBuffering[i+1] = m_maxDecPicBuffering[i];
    }
  }

  // the value of dpb_max_num_reorder_pics[ i ] shall be in the range of 0 to max_dec_pic_buffering[ i ] -  1, inclusive
  if(m_maxNumReorderPics[MAX_TLAYER-1] > m_maxDecPicBuffering[MAX_TLAYER-1] - 1)
  {
    m_maxDecPicBuffering[MAX_TLAYER-1] = m_maxNumReorderPics[MAX_TLAYER-1] + 1;
  }

  if( m_picPartitionFlag )
  {
    PPS pps;
    uint32_t colIdx, rowIdx;
    uint32_t remSize;

    pps.setPicWidthInLumaSamples( m_sourceWidth );
    pps.setPicHeightInLumaSamples( m_sourceHeight );
    pps.setLog2CtuSize( floorLog2(m_uiCTUSize) );

    // set default tile column if not provided
    if( m_tileColumnWidth.size() == 0 )
    {
      m_tileColumnWidth.push_back( pps.getPicWidthInCtu() );
    }
    // set default tile row if not provided
    if( m_tileRowHeight.size() == 0 )
    {
      m_tileRowHeight.push_back( pps.getPicHeightInCtu() );
    }

    // remove any tile columns that can be specified implicitly
    while( m_tileColumnWidth.size() > 1 && m_tileColumnWidth.end()[-1] == m_tileColumnWidth.end()[-2] )
    {
      m_tileColumnWidth.pop_back();
    }