VLCWriter.cpp 82.5 KB
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/* The copyright in this software is being made available under the BSD
* License, included below. This software may be subject to other third party
* and contributor rights, including patent rights, and no such rights are
* granted under this license.
*
* Copyright (c) 2010-2018, ITU/ISO/IEC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
*  * Redistributions of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
*  * Redistributions in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the documentation
*    and/or other materials provided with the distribution.
*  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
*    be used to endorse or promote products derived from this software without
*    specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/

/** \file     VLCWriter.cpp
 *  \brief    Writer for high level syntax
 */

#include "VLCWriter.h"
#include "SEIwrite.h"

#include "CommonLib/CommonDef.h"
#include "CommonLib/Unit.h"
#include "CommonLib/Picture.h" // th remove this
#include "CommonLib/dtrace_next.h"
#include "EncAdaptiveLoopFilter.h"
#include "CommonLib/AdaptiveLoopFilter.h"

//! \ingroup EncoderLib
//! \{

#if ENABLE_TRACING

void  VLCWriter::xWriteCodeTr (uint32_t value, uint32_t  length, const char *pSymbolName)
{
  xWriteCode (value,length);

  if( g_HLSTraceEnable )
  {
    if( length < 10 )
    {
      DTRACE( g_trace_ctx, D_HEADER, "%-50s u(%d)  : %d\n", pSymbolName, length, value );
    }
    else
    {
      DTRACE( g_trace_ctx, D_HEADER, "%-50s u(%d) : %d\n", pSymbolName, length, value );
    }
  }
}

void  VLCWriter::xWriteUvlcTr (uint32_t value, const char *pSymbolName)
{
  xWriteUvlc (value);
  if( g_HLSTraceEnable )
  {
    DTRACE( g_trace_ctx, D_HEADER, "%-50s ue(v) : %d\n", pSymbolName, value );
  }
}

void  VLCWriter::xWriteSvlcTr (int value, const char *pSymbolName)
{
  xWriteSvlc(value);
  if( g_HLSTraceEnable )
  {
    DTRACE( g_trace_ctx, D_HEADER, "%-50s se(v) : %d\n", pSymbolName, value );
  }
}

void  VLCWriter::xWriteFlagTr(uint32_t value, const char *pSymbolName)
{
  xWriteFlag(value);
  if( g_HLSTraceEnable )
  {
    DTRACE( g_trace_ctx, D_HEADER, "%-50s u(1)  : %d\n", pSymbolName, value );
  }
}

bool g_HLSTraceEnable = true;

#endif


void VLCWriter::xWriteCode     ( uint32_t uiCode, uint32_t uiLength )
{
  CHECK( uiLength == 0, "Code of lenght '0' not supported" );
  m_pcBitIf->write( uiCode, uiLength );
}

void VLCWriter::xWriteUvlc     ( uint32_t uiCode )
{
  uint32_t uiLength = 1;
  uint32_t uiTemp = ++uiCode;

  CHECK( !uiTemp, "Integer overflow" );

  while( 1 != uiTemp )
  {
    uiTemp >>= 1;
    uiLength += 2;
  }
  // Take care of cases where uiLength > 32
  m_pcBitIf->write( 0, uiLength >> 1);
  m_pcBitIf->write( uiCode, (uiLength+1) >> 1);
}

void VLCWriter::xWriteSvlc     ( int iCode )
{
  uint32_t uiCode = uint32_t( iCode <= 0 ? (-iCode)<<1 : (iCode<<1)-1);
  xWriteUvlc( uiCode );
}

void VLCWriter::xWriteFlag( uint32_t uiCode )
{
  m_pcBitIf->write( uiCode, 1 );
}

void VLCWriter::xWriteRbspTrailingBits()
{
  WRITE_FLAG( 1, "rbsp_stop_one_bit");
  int cnt = 0;
  while (m_pcBitIf->getNumBitsUntilByteAligned())
  {
    WRITE_FLAG( 0, "rbsp_alignment_zero_bit");
    cnt++;
  }
  CHECK(cnt>=8, "More than '8' alignment bytes read");
}

void AUDWriter::codeAUD(OutputBitstream& bs, const int pictureType)
{
#if ENABLE_TRACING
  xTraceAccessUnitDelimiter();
#endif

  CHECK(pictureType >= 3, "Invalid picture type");
  setBitstream(&bs);
  WRITE_CODE(pictureType, 3, "pic_type");
  xWriteRbspTrailingBits();
}

void HLSWriter::xCodeShortTermRefPicSet( const ReferencePictureSet* rps, bool calledFromSliceHeader, int idx)
{
  //int lastBits = getNumberOfWrittenBits();

  if (idx > 0)
  {
    WRITE_FLAG( rps->getInterRPSPrediction(), "inter_ref_pic_set_prediction_flag" ); // inter_RPS_prediction_flag
  }
  if (rps->getInterRPSPrediction())
  {
    int deltaRPS = rps->getDeltaRPS();
    if(calledFromSliceHeader)
    {
      WRITE_UVLC( rps->getDeltaRIdxMinus1(), "delta_idx_minus1" ); // delta index of the Reference Picture Set used for prediction minus 1
    }

    WRITE_CODE( (deltaRPS >=0 ? 0: 1), 1, "delta_rps_sign" ); //delta_rps_sign
    WRITE_UVLC( abs(deltaRPS) - 1, "abs_delta_rps_minus1"); // absolute delta RPS minus 1

    for(int j=0; j < rps->getNumRefIdc(); j++)
    {
      int refIdc = rps->getRefIdc(j);
      WRITE_CODE( (refIdc==1? 1: 0), 1, "used_by_curr_pic_flag" ); //first bit is "1" if Idc is 1
      if (refIdc != 1)
      {
        WRITE_CODE( refIdc>>1, 1, "use_delta_flag" ); //second bit is "1" if Idc is 2, "0" otherwise.
      }
    }
  }
  else
  {
    WRITE_UVLC( rps->getNumberOfNegativePictures(), "num_negative_pics" );
    WRITE_UVLC( rps->getNumberOfPositivePictures(), "num_positive_pics" );
    int prev = 0;
    for(int j=0 ; j < rps->getNumberOfNegativePictures(); j++)
    {
      WRITE_UVLC( prev-rps->getDeltaPOC(j)-1, "delta_poc_s0_minus1" );
      prev = rps->getDeltaPOC(j);
      WRITE_FLAG( rps->getUsed(j), "used_by_curr_pic_s0_flag");
    }
    prev = 0;
    for(int j=rps->getNumberOfNegativePictures(); j < rps->getNumberOfNegativePictures()+rps->getNumberOfPositivePictures(); j++)
    {
      WRITE_UVLC( rps->getDeltaPOC(j)-prev-1, "delta_poc_s1_minus1" );
      prev = rps->getDeltaPOC(j);
      WRITE_FLAG( rps->getUsed(j), "used_by_curr_pic_s1_flag" );
    }
  }

  //DTRACE( g_trace_ctx, D_RPSINFO, "irps=%d (%2d bits) ", rps->getInterRPSPrediction(), getNumberOfWrittenBits() - lastBits );
  rps->printDeltaPOC();
}

void HLSWriter::codePPS( const PPS* pcPPS )
{
#if ENABLE_TRACING
  xTracePPSHeader ();
#endif

  WRITE_UVLC( pcPPS->getPPSId(),                             "pps_pic_parameter_set_id" );
  WRITE_UVLC( pcPPS->getSPSId(),                             "pps_seq_parameter_set_id" );
#if HEVC_DEPENDENT_SLICES
  WRITE_FLAG( pcPPS->getDependentSliceSegmentsEnabledFlag()    ? 1 : 0, "dependent_slice_segments_enabled_flag" );
#endif
  WRITE_FLAG( pcPPS->getOutputFlagPresentFlag() ? 1 : 0,     "output_flag_present_flag" );
  WRITE_CODE( pcPPS->getNumExtraSliceHeaderBits(), 3,        "num_extra_slice_header_bits");
  WRITE_FLAG( pcPPS->getCabacInitPresentFlag() ? 1 : 0,   "cabac_init_present_flag" );
  WRITE_UVLC( pcPPS->getNumRefIdxL0DefaultActive()-1,     "num_ref_idx_l0_default_active_minus1");
  WRITE_UVLC( pcPPS->getNumRefIdxL1DefaultActive()-1,     "num_ref_idx_l1_default_active_minus1");

  WRITE_SVLC( pcPPS->getPicInitQPMinus26(),                  "init_qp_minus26");
  WRITE_FLAG( pcPPS->getConstrainedIntraPred() ? 1 : 0,      "constrained_intra_pred_flag" );
  WRITE_FLAG( pcPPS->getUseTransformSkip() ? 1 : 0,  "transform_skip_enabled_flag" );
  WRITE_FLAG( pcPPS->getUseDQP() ? 1 : 0, "cu_qp_delta_enabled_flag" );
  if ( pcPPS->getUseDQP() )
  {
    WRITE_UVLC( pcPPS->getMaxCuDQPDepth(), "diff_cu_qp_delta_depth" );
  }

  WRITE_SVLC( pcPPS->getQpOffset(COMPONENT_Cb), "pps_cb_qp_offset" );
  WRITE_SVLC( pcPPS->getQpOffset(COMPONENT_Cr), "pps_cr_qp_offset" );

  WRITE_FLAG( pcPPS->getSliceChromaQpFlag() ? 1 : 0,          "pps_slice_chroma_qp_offsets_present_flag" );

  WRITE_FLAG( pcPPS->getUseWP() ? 1 : 0,  "weighted_pred_flag" );   // Use of Weighting Prediction (P_SLICE)
  WRITE_FLAG( pcPPS->getWPBiPred() ? 1 : 0, "weighted_bipred_flag" );  // Use of Weighting Bi-Prediction (B_SLICE)
  WRITE_FLAG( pcPPS->getTransquantBypassEnabledFlag()  ? 1 : 0, "transquant_bypass_enabled_flag" );
#if HEVC_TILES_WPP
  WRITE_FLAG( pcPPS->getTilesEnabledFlag() ? 1 : 0, "tiles_enabled_flag" );
  WRITE_FLAG( pcPPS->getEntropyCodingSyncEnabledFlag() ? 1 : 0, "entropy_coding_sync_enabled_flag" );
  if( pcPPS->getTilesEnabledFlag() )
  {
    WRITE_UVLC( pcPPS->getNumTileColumnsMinus1(),                                    "num_tile_columns_minus1" );
    WRITE_UVLC( pcPPS->getNumTileRowsMinus1(),                                       "num_tile_rows_minus1" );
    WRITE_FLAG( pcPPS->getTileUniformSpacingFlag(),                                  "uniform_spacing_flag" );
    if( !pcPPS->getTileUniformSpacingFlag() )
    {
      for(uint32_t i=0; i<pcPPS->getNumTileColumnsMinus1(); i++)
      {
        WRITE_UVLC( pcPPS->getTileColumnWidth(i)-1,                                  "column_width_minus1" );
      }
      for(uint32_t i=0; i<pcPPS->getNumTileRowsMinus1(); i++)
      {
        WRITE_UVLC( pcPPS->getTileRowHeight(i)-1,                                    "row_height_minus1" );
      }
    }
    CHECK ((pcPPS->getNumTileColumnsMinus1() + pcPPS->getNumTileRowsMinus1()) == 0, "Invalid tile parameters read");
    WRITE_FLAG( pcPPS->getLoopFilterAcrossTilesEnabledFlag()?1 : 0,       "loop_filter_across_tiles_enabled_flag");
  }
#endif
  WRITE_FLAG( pcPPS->getLoopFilterAcrossSlicesEnabledFlag()?1 : 0,        "pps_loop_filter_across_slices_enabled_flag");
  WRITE_FLAG( pcPPS->getDeblockingFilterControlPresentFlag()?1 : 0,       "deblocking_filter_control_present_flag");
  if(pcPPS->getDeblockingFilterControlPresentFlag())
  {
    WRITE_FLAG( pcPPS->getDeblockingFilterOverrideEnabledFlag() ? 1 : 0,  "deblocking_filter_override_enabled_flag" );
    WRITE_FLAG( pcPPS->getPPSDeblockingFilterDisabledFlag() ? 1 : 0,      "pps_deblocking_filter_disabled_flag" );
    if(!pcPPS->getPPSDeblockingFilterDisabledFlag())
    {
      WRITE_SVLC( pcPPS->getDeblockingFilterBetaOffsetDiv2(),             "pps_beta_offset_div2" );
      WRITE_SVLC( pcPPS->getDeblockingFilterTcOffsetDiv2(),               "pps_tc_offset_div2" );
    }
  }
#if HEVC_USE_SCALING_LISTS
  WRITE_FLAG( pcPPS->getScalingListPresentFlag() ? 1 : 0,                          "pps_scaling_list_data_present_flag" );
  if( pcPPS->getScalingListPresentFlag() )
  {
    codeScalingList( pcPPS->getScalingList() );
  }
#endif
  WRITE_FLAG( pcPPS->getListsModificationPresentFlag(), "lists_modification_present_flag");
  WRITE_UVLC( pcPPS->getLog2ParallelMergeLevelMinus2(), "log2_parallel_merge_level_minus2");
  WRITE_FLAG( pcPPS->getSliceHeaderExtensionPresentFlag() ? 1 : 0, "slice_segment_header_extension_present_flag");

  bool pps_extension_present_flag=false;
  bool pps_extension_flags[NUM_PPS_EXTENSION_FLAGS]={false};

  pps_extension_flags[PPS_EXT__REXT] = pcPPS->getPpsRangeExtension().settingsDifferFromDefaults(pcPPS->getUseTransformSkip());

  // Other PPS extension flags checked here.

  for(int i=0; i<NUM_PPS_EXTENSION_FLAGS; i++)
  {
    pps_extension_present_flag|=pps_extension_flags[i];
  }

  WRITE_FLAG( (pps_extension_present_flag?1:0), "pps_extension_present_flag" );

  if (pps_extension_present_flag)
  {
#if ENABLE_TRACING /*|| RExt__DECODER_DEBUG_BIT_STATISTICS*/
    static const char *syntaxStrings[]={ "pps_range_extension_flag",
      "pps_multilayer_extension_flag",
      "pps_extension_6bits[0]",
      "pps_extension_6bits[1]",
      "pps_extension_6bits[2]",
      "pps_extension_6bits[3]",
      "pps_extension_6bits[4]",
      "pps_extension_6bits[5]" };
#endif

    for(int i=0; i<NUM_PPS_EXTENSION_FLAGS; i++)
    {
      WRITE_FLAG( pps_extension_flags[i]?1:0, syntaxStrings[i] );
    }

    for(int i=0; i<NUM_PPS_EXTENSION_FLAGS; i++) // loop used so that the order is determined by the enum.
    {
      if (pps_extension_flags[i])
      {
        switch (PPSExtensionFlagIndex(i))
        {
        case PPS_EXT__REXT:
        {
          const PPSRExt &ppsRangeExtension = pcPPS->getPpsRangeExtension();
          if (pcPPS->getUseTransformSkip())
          {
            WRITE_UVLC( ppsRangeExtension.getLog2MaxTransformSkipBlockSize()-2,            "log2_max_transform_skip_block_size_minus2");
          }

          WRITE_FLAG((ppsRangeExtension.getCrossComponentPredictionEnabledFlag() ? 1 : 0), "cross_component_prediction_enabled_flag" );

          WRITE_FLAG(uint32_t(ppsRangeExtension.getChromaQpOffsetListEnabledFlag()),           "chroma_qp_offset_list_enabled_flag" );
          if (ppsRangeExtension.getChromaQpOffsetListEnabledFlag())
          {
            WRITE_UVLC(ppsRangeExtension.getDiffCuChromaQpOffsetDepth(),                   "diff_cu_chroma_qp_offset_depth");
            WRITE_UVLC(ppsRangeExtension.getChromaQpOffsetListLen() - 1,                   "chroma_qp_offset_list_len_minus1");
            /* skip zero index */
            for (int cuChromaQpOffsetIdx = 0; cuChromaQpOffsetIdx < ppsRangeExtension.getChromaQpOffsetListLen(); cuChromaQpOffsetIdx++)
            {
              WRITE_SVLC(ppsRangeExtension.getChromaQpOffsetListEntry(cuChromaQpOffsetIdx+1).u.comp.CbOffset,     "cb_qp_offset_list[i]");
              WRITE_SVLC(ppsRangeExtension.getChromaQpOffsetListEntry(cuChromaQpOffsetIdx+1).u.comp.CrOffset,     "cr_qp_offset_list[i]");
            }
          }

          WRITE_UVLC( ppsRangeExtension.getLog2SaoOffsetScale(CHANNEL_TYPE_LUMA),           "log2_sao_offset_scale_luma"   );
          WRITE_UVLC( ppsRangeExtension.getLog2SaoOffsetScale(CHANNEL_TYPE_CHROMA),         "log2_sao_offset_scale_chroma" );
        }
        break;
        default:
          CHECK(pps_extension_flags[i]==false, "Unknown PPS extension signalled"); // Should never get here with an active PPS extension flag.
          break;
        } // switch
      } // if flag present
    } // loop over PPS flags
  } // pps_extension_present_flag is non-zero
  xWriteRbspTrailingBits();
}

void HLSWriter::codeVUI( const VUI *pcVUI, const SPS* pcSPS )
{
#if ENABLE_TRACING
  DTRACE( g_trace_ctx, D_HEADER, "----------- vui_parameters -----------\n");
#endif
  WRITE_FLAG(pcVUI->getAspectRatioInfoPresentFlag(),            "aspect_ratio_info_present_flag");
  if (pcVUI->getAspectRatioInfoPresentFlag())
  {
    WRITE_CODE(pcVUI->getAspectRatioIdc(), 8,                   "aspect_ratio_idc" );
    if (pcVUI->getAspectRatioIdc() == 255)
    {
      WRITE_CODE(pcVUI->getSarWidth(), 16,                      "sar_width");
      WRITE_CODE(pcVUI->getSarHeight(), 16,                     "sar_height");
    }
  }
  WRITE_FLAG(pcVUI->getOverscanInfoPresentFlag(),               "overscan_info_present_flag");
  if (pcVUI->getOverscanInfoPresentFlag())
  {
    WRITE_FLAG(pcVUI->getOverscanAppropriateFlag(),             "overscan_appropriate_flag");
  }
  WRITE_FLAG(pcVUI->getVideoSignalTypePresentFlag(),            "video_signal_type_present_flag");
  if (pcVUI->getVideoSignalTypePresentFlag())
  {
    WRITE_CODE(pcVUI->getVideoFormat(), 3,                      "video_format");
    WRITE_FLAG(pcVUI->getVideoFullRangeFlag(),                  "video_full_range_flag");
    WRITE_FLAG(pcVUI->getColourDescriptionPresentFlag(),        "colour_description_present_flag");
    if (pcVUI->getColourDescriptionPresentFlag())
    {
      WRITE_CODE(pcVUI->getColourPrimaries(), 8,                "colour_primaries");
      WRITE_CODE(pcVUI->getTransferCharacteristics(), 8,        "transfer_characteristics");
      WRITE_CODE(pcVUI->getMatrixCoefficients(), 8,             "matrix_coeffs");
    }
  }

  WRITE_FLAG(pcVUI->getChromaLocInfoPresentFlag(),              "chroma_loc_info_present_flag");
  if (pcVUI->getChromaLocInfoPresentFlag())
  {
    WRITE_UVLC(pcVUI->getChromaSampleLocTypeTopField(),         "chroma_sample_loc_type_top_field");
    WRITE_UVLC(pcVUI->getChromaSampleLocTypeBottomField(),      "chroma_sample_loc_type_bottom_field");
  }

  WRITE_FLAG(pcVUI->getNeutralChromaIndicationFlag(),           "neutral_chroma_indication_flag");
  WRITE_FLAG(pcVUI->getFieldSeqFlag(),                          "field_seq_flag");
  WRITE_FLAG(pcVUI->getFrameFieldInfoPresentFlag(),             "frame_field_info_present_flag");

  Window defaultDisplayWindow = pcVUI->getDefaultDisplayWindow();
  WRITE_FLAG(defaultDisplayWindow.getWindowEnabledFlag(),       "default_display_window_flag");
  if( defaultDisplayWindow.getWindowEnabledFlag() )
  {
    WRITE_UVLC(defaultDisplayWindow.getWindowLeftOffset()  / SPS::getWinUnitX(pcSPS->getChromaFormatIdc()), "def_disp_win_left_offset");
    WRITE_UVLC(defaultDisplayWindow.getWindowRightOffset() / SPS::getWinUnitX(pcSPS->getChromaFormatIdc()), "def_disp_win_right_offset");
    WRITE_UVLC(defaultDisplayWindow.getWindowTopOffset()   / SPS::getWinUnitY(pcSPS->getChromaFormatIdc()), "def_disp_win_top_offset");
    WRITE_UVLC(defaultDisplayWindow.getWindowBottomOffset()/ SPS::getWinUnitY(pcSPS->getChromaFormatIdc()), "def_disp_win_bottom_offset");
  }
  const TimingInfo *timingInfo = pcVUI->getTimingInfo();
  WRITE_FLAG(timingInfo->getTimingInfoPresentFlag(),          "vui_timing_info_present_flag");
  if(timingInfo->getTimingInfoPresentFlag())
  {
    WRITE_CODE(timingInfo->getNumUnitsInTick(), 32,           "vui_num_units_in_tick");
    WRITE_CODE(timingInfo->getTimeScale(),      32,           "vui_time_scale");
    WRITE_FLAG(timingInfo->getPocProportionalToTimingFlag(),  "vui_poc_proportional_to_timing_flag");
    if(timingInfo->getPocProportionalToTimingFlag())
    {
      WRITE_UVLC(timingInfo->getNumTicksPocDiffOneMinus1(),   "vui_num_ticks_poc_diff_one_minus1");
    }
    WRITE_FLAG(pcVUI->getHrdParametersPresentFlag(),              "vui_hrd_parameters_present_flag");
    if( pcVUI->getHrdParametersPresentFlag() )
    {
      codeHrdParameters(pcVUI->getHrdParameters(), 1, pcSPS->getMaxTLayers() - 1 );
    }
  }

  WRITE_FLAG(pcVUI->getBitstreamRestrictionFlag(),              "bitstream_restriction_flag");
  if (pcVUI->getBitstreamRestrictionFlag())
  {
#if HEVC_TILES_WPP
    WRITE_FLAG(pcVUI->getTilesFixedStructureFlag(),             "tiles_fixed_structure_flag");
#endif
    WRITE_FLAG(pcVUI->getMotionVectorsOverPicBoundariesFlag(),  "motion_vectors_over_pic_boundaries_flag");
    WRITE_FLAG(pcVUI->getRestrictedRefPicListsFlag(),           "restricted_ref_pic_lists_flag");
    WRITE_UVLC(pcVUI->getMinSpatialSegmentationIdc(),           "min_spatial_segmentation_idc");
    WRITE_UVLC(pcVUI->getMaxBytesPerPicDenom(),                 "max_bytes_per_pic_denom");
    WRITE_UVLC(pcVUI->getMaxBitsPerMinCuDenom(),                "max_bits_per_min_cu_denom");
    WRITE_UVLC(pcVUI->getLog2MaxMvLengthHorizontal(),           "log2_max_mv_length_horizontal");
    WRITE_UVLC(pcVUI->getLog2MaxMvLengthVertical(),             "log2_max_mv_length_vertical");
  }
}

void HLSWriter::codeHrdParameters( const HRD *hrd, bool commonInfPresentFlag, uint32_t maxNumSubLayersMinus1 )
{
  if( commonInfPresentFlag )
  {
    WRITE_FLAG( hrd->getNalHrdParametersPresentFlag() ? 1 : 0 ,  "nal_hrd_parameters_present_flag" );
    WRITE_FLAG( hrd->getVclHrdParametersPresentFlag() ? 1 : 0 ,  "vcl_hrd_parameters_present_flag" );
    if( hrd->getNalHrdParametersPresentFlag() || hrd->getVclHrdParametersPresentFlag() )
    {
      WRITE_FLAG( hrd->getSubPicCpbParamsPresentFlag() ? 1 : 0,  "sub_pic_hrd_params_present_flag" );
      if( hrd->getSubPicCpbParamsPresentFlag() )
      {
        WRITE_CODE( hrd->getTickDivisorMinus2(), 8,              "tick_divisor_minus2" );
        WRITE_CODE( hrd->getDuCpbRemovalDelayLengthMinus1(), 5,  "du_cpb_removal_delay_increment_length_minus1" );
        WRITE_FLAG( hrd->getSubPicCpbParamsInPicTimingSEIFlag() ? 1 : 0, "sub_pic_cpb_params_in_pic_timing_sei_flag" );
        WRITE_CODE( hrd->getDpbOutputDelayDuLengthMinus1(), 5,   "dpb_output_delay_du_length_minus1"  );
      }
      WRITE_CODE( hrd->getBitRateScale(), 4,                     "bit_rate_scale" );
      WRITE_CODE( hrd->getCpbSizeScale(), 4,                     "cpb_size_scale" );
      if( hrd->getSubPicCpbParamsPresentFlag() )
      {
        WRITE_CODE( hrd->getDuCpbSizeScale(), 4,                "du_cpb_size_scale" );
      }
      WRITE_CODE( hrd->getInitialCpbRemovalDelayLengthMinus1(), 5, "initial_cpb_removal_delay_length_minus1" );
      WRITE_CODE( hrd->getCpbRemovalDelayLengthMinus1(),        5, "au_cpb_removal_delay_length_minus1" );
      WRITE_CODE( hrd->getDpbOutputDelayLengthMinus1(),         5, "dpb_output_delay_length_minus1" );
    }
  }
  int i, j, nalOrVcl;
  for( i = 0; i <= maxNumSubLayersMinus1; i ++ )
  {
    WRITE_FLAG( hrd->getFixedPicRateFlag( i ) ? 1 : 0,          "fixed_pic_rate_general_flag");
    bool fixedPixRateWithinCvsFlag = true;
    if( !hrd->getFixedPicRateFlag( i ) )
    {
      fixedPixRateWithinCvsFlag = hrd->getFixedPicRateWithinCvsFlag( i );
      WRITE_FLAG( hrd->getFixedPicRateWithinCvsFlag( i ) ? 1 : 0, "fixed_pic_rate_within_cvs_flag");
    }
    if( fixedPixRateWithinCvsFlag )
    {
      WRITE_UVLC( hrd->getPicDurationInTcMinus1( i ),           "elemental_duration_in_tc_minus1");
    }
    else
    {
      WRITE_FLAG( hrd->getLowDelayHrdFlag( i ) ? 1 : 0,           "low_delay_hrd_flag");
    }
    if (!hrd->getLowDelayHrdFlag( i ))
    {
      WRITE_UVLC( hrd->getCpbCntMinus1( i ),                      "cpb_cnt_minus1");
    }

    for( nalOrVcl = 0; nalOrVcl < 2; nalOrVcl ++ )
    {
      if( ( ( nalOrVcl == 0 ) && ( hrd->getNalHrdParametersPresentFlag() ) ) ||
          ( ( nalOrVcl == 1 ) && ( hrd->getVclHrdParametersPresentFlag() ) ) )
      {
        for( j = 0; j <= ( hrd->getCpbCntMinus1( i ) ); j ++ )
        {
          WRITE_UVLC( hrd->getBitRateValueMinus1( i, j, nalOrVcl ), "bit_rate_value_minus1");
          WRITE_UVLC( hrd->getCpbSizeValueMinus1( i, j, nalOrVcl ), "cpb_size_value_minus1");
          if( hrd->getSubPicCpbParamsPresentFlag() )
          {
            WRITE_UVLC( hrd->getDuCpbSizeValueMinus1( i, j, nalOrVcl ), "cpb_size_du_value_minus1");
            WRITE_UVLC( hrd->getDuBitRateValueMinus1( i, j, nalOrVcl ), "bit_rate_du_value_minus1");
          }
          WRITE_FLAG( hrd->getCbrFlag( i, j, nalOrVcl ) ? 1 : 0, "cbr_flag");
        }
      }
    }
  }
}


void HLSWriter::codeSPSNext( const SPSNext& spsNext, const bool usePCM )
{
  // tool enabling flags
  WRITE_FLAG( spsNext.getUseLargeCTU() ? 1 : 0,                                                 "large_ctu_flag" );
  WRITE_FLAG(spsNext.getUseSubPuMvp() ? 1 : 0,                                                  "subpu_tmvp_flag");
  WRITE_FLAG( spsNext.getUseIMV() ? 1 : 0,                                                      "imv_enable_flag" );
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  WRITE_FLAG( spsNext.getUseBIO() ? 1 : 0,                                                      "bio_enable_flag" );
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  WRITE_FLAG( spsNext.getDisableMotCompress() ? 1 : 0,                                          "disable_motion_compression_flag" );
  WRITE_FLAG( spsNext.getUseLMChroma() ? 1 : 0,                                                 "lm_chroma_enabled_flag" );
  WRITE_FLAG( spsNext.getUseIntraEMT() ? 1 : 0,                                                 "emt_intra_enabled_flag" );
  WRITE_FLAG( spsNext.getUseInterEMT() ? 1 : 0,                                                 "emt_inter_enabled_flag" );
  WRITE_FLAG( spsNext.getUseAffine() ? 1 : 0,                                                   "affine_flag" );
  if ( spsNext.getUseAffine() )
  {
    WRITE_FLAG( spsNext.getUseAffineType() ? 1 : 0,                                             "affine_type_flag" );
  }
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  WRITE_FLAG( spsNext.getUseGBi() ? 1 : 0,                                                      "gbi_flag" );
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#if JVET_L0293_CPR
  WRITE_FLAG(spsNext.getCPRMode() ? 1 : 0,                                                      "cpr_flag" );
#endif  
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  for( int k = 0; k < SPSNext::NumReservedFlags; k++ )
  {
    WRITE_FLAG( 0,                                                                              "reserved_flag" );
  }

  WRITE_FLAG( spsNext.getMTTEnabled() ? 1 : 0,                                                  "mtt_enabled_flag" );
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  WRITE_FLAG( spsNext.getUseMHIntra() ? 1 : 0,                                                  "mhintra_flag" );
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  WRITE_FLAG( spsNext.getUseTriangle() ? 1: 0,                                                  "triangle_flag" );
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#if ENABLE_WPP_PARALLELISM
  WRITE_FLAG( spsNext.getUseNextDQP(),                                                          "next_dqp_enabled_flag" );
#else
  WRITE_FLAG( 0,                                                                                "reserved_flag" );
#endif

  // additional parameters
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#if !JVET_L0217_L0678_SPS_CLEANUP
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  WRITE_FLAG( spsNext.getUseDualITree(),                                                      "qtbt_dual_intra_tree" );
  WRITE_UVLC( g_aucLog2[spsNext.getCTUSize()]                                 - MIN_CU_LOG2,  "log2_CTU_size_minus2" );
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#if JVET_L0217_L0678_PARTITION_HIGHLEVEL_CONSTRAINT
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  WRITE_FLAG (spsNext.getSplitConsOverrideEnabledFlag(),                                      "sps_override_partition_constraints_enable_flag");
  WRITE_UVLC( g_aucLog2[spsNext.getMinQTSize(I_SLICE)] - spsNext.getSPS().getLog2MinCodingBlockSize(), "sps_log2_diff_min_qt_min_cb_intra_slice");
  WRITE_UVLC( g_aucLog2[spsNext.getMinQTSize(B_SLICE)] - spsNext.getSPS().getLog2MinCodingBlockSize(), "sps_log2_diff_min_qt_min_cb_inter_slice");
  WRITE_UVLC( spsNext.getMaxBTDepth(),                                                        "sps_max_mtt_hierarchy_depth_inter_slices");
  WRITE_UVLC( spsNext.getMaxBTDepthI(),                                                       "sps_max_mtt_hierarchy_depth_intra_slices");
  if (spsNext.getMaxBTDepthI() != 0)
  {
    WRITE_UVLC(g_aucLog2[spsNext.getMaxBTSizeI()] - g_aucLog2[spsNext.getMinQTSize(I_SLICE)], "sps_log2_diff_max_bt_min_qt_intra_slice");
    WRITE_UVLC(g_aucLog2[spsNext.getMaxTTSizeI()] - g_aucLog2[spsNext.getMinQTSize(I_SLICE)], "sps_log2_diff_max_tt_min_qt_intra_slice");
  }
  if (spsNext.getMaxBTDepth() != 0)
  {
    WRITE_UVLC(g_aucLog2[spsNext.getMaxBTSize()] - g_aucLog2[spsNext.getMinQTSize(B_SLICE)], "sps_log2_diff_max_bt_min_qt_inter_slice");
    WRITE_UVLC(g_aucLog2[spsNext.getMaxTTSize()] - g_aucLog2[spsNext.getMinQTSize(B_SLICE)], "sps_log2_diff_max_tt_min_qt_inter_slice");
  }
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#else
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  WRITE_UVLC( g_aucLog2[spsNext.getMinQTSize( I_SLICE ) ]                     - MIN_CU_LOG2,  "log2_minQT_ISlice_minus2" );
  WRITE_UVLC( g_aucLog2[spsNext.getMinQTSize( B_SLICE ) ]                     - MIN_CU_LOG2,  "log2_minQT_PBSlice_minus2" );
  WRITE_UVLC( spsNext.getMaxBTDepth(),                                                        "max_bt_depth" );
  WRITE_UVLC( spsNext.getMaxBTDepthI(),                                                       "max_bt_depth_i_slice" );
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#endif
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  if( spsNext.getUseDualITree() )
  {
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#if JVET_L0217_L0678_PARTITION_HIGHLEVEL_CONSTRAINT
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    WRITE_UVLC( g_aucLog2[spsNext.getMinQTSize( I_SLICE, CHANNEL_TYPE_CHROMA )] - spsNext.getSPS().getLog2MinCodingBlockSize(), "sps_log2_diff_min_qt_min_cb_intra_slice_chroma");
    WRITE_UVLC( spsNext.getMaxBTDepthIChroma(),                                                "sps_max_mtt_hierarchy_depth_intra_slices_chroma");
    if (spsNext.getMaxBTDepthIChroma() != 0)
    {
      WRITE_UVLC(g_aucLog2[spsNext.getMaxBTSizeIChroma()] - g_aucLog2[spsNext.getMinQTSize(I_SLICE, CHANNEL_TYPE_CHROMA)], "sps_log2_diff_max_bt_min_qt_intra_slice_chroma");
      WRITE_UVLC(g_aucLog2[spsNext.getMaxTTSizeIChroma()] - g_aucLog2[spsNext.getMinQTSize(I_SLICE, CHANNEL_TYPE_CHROMA)], "sps_log2_diff_max_tt_min_qt_intra_slice_chroma");
    }
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#else
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    WRITE_UVLC( g_aucLog2[spsNext.getMinQTSize( I_SLICE, CHANNEL_TYPE_CHROMA )] - MIN_CU_LOG2, "log2_minQT_ISliceChroma_minus2" );
    WRITE_UVLC( spsNext.getMaxBTDepthIChroma(),                                                "max_bt_depth_i_slice_chroma" );
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#endif
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  }
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#endif
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#if !JVET_L0198_L0468_L0104_ATMVP_8x8SUB_BLOCK
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  if( spsNext.getUseSubPuMvp() )
  {
    WRITE_CODE( spsNext.getSubPuMvpLog2Size() - MIN_CU_LOG2, 3,                                 "log2_sub_pu_tmvp_size_minus2" );
  }
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#endif 
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  if( spsNext.getUseIMV() )
  {
    WRITE_UVLC( spsNext.getImvMode()-1,                                                         "imv_mode_minus1" );
  }

  if( spsNext.getMTTEnabled() )
  {
    WRITE_UVLC( spsNext.getMTTMode() - 1,                                                       "mtt_mode_minus1" );
  }
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#if LUMA_ADAPTIVE_DEBLOCKING_FILTER_QP_OFFSET
  WRITE_FLAG( spsNext.getLadfEnabled() ? 1 : 0,                                                 "sps_ladf_enabled_flag" );
  if ( spsNext.getLadfEnabled() )
  {
    WRITE_CODE( spsNext.getLadfNumIntervals() - 2, 2,                                           "sps_num_ladf_intervals_minus2" );
    WRITE_SVLC( spsNext.getLadfQpOffset( 0 ),                                                   "sps_ladf_lowest_interval_qp_offset");
    for ( int k = 1; k< spsNext.getLadfNumIntervals(); k++ )
    {
      WRITE_SVLC( spsNext.getLadfQpOffset( k ),                                                 "sps_ladf_qp_offset" );
      WRITE_UVLC( spsNext.getLadfIntervalLowerBound( k ) - spsNext.getLadfIntervalLowerBound( k - 1 ) - 1, "sps_ladf_delta_threshold_minus1" );
    }
  }
#endif
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  // ADD_NEW_TOOL : (sps extension writer) write tool enabling flags and associated parameters here
}

void HLSWriter::codeSPS( const SPS* pcSPS )
{

  const ChromaFormat format                = pcSPS->getChromaFormatIdc();
  const bool         chromaEnabled         = isChromaEnabled(format);
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#if JVET_L0696_CONSTRAINT_SYNTAX
  WRITE_FLAG(pcSPS->getIntraOnlyConstraintFlag() ? 1 : 0, "intra_only_constraint_flag");
  WRITE_CODE(pcSPS->getMaxBitDepthConstraintIdc(), 4, "max_bitdepth_constraint_idc");
  WRITE_CODE(pcSPS->getMaxChromaFormatConstraintIdc(), 2, "max_chroma_format_constraint_idc");
  WRITE_FLAG(pcSPS->getFrameConstraintFlag() ? 1 : 0, "frame_constraint_flag");
  WRITE_FLAG(pcSPS->getNoQtbttDualTreeIntraConstraintFlag() ? 1 : 0, "no_qtbtt_dual_tree_intra constraint_flag");
  WRITE_FLAG(pcSPS->getNoCclmConstraintFlag() ? 1 : 0, "no_cclm_constraint_flag");
  WRITE_FLAG(pcSPS->getNoSaoConstraintFlag() ? 1 : 0, "no_sao_constraint_flag");
  WRITE_FLAG(pcSPS->getNoAlfConstraintFlag() ? 1 : 0, "no_alf_constraint_flag");
  WRITE_FLAG(pcSPS->getNoPcmConstraintFlag() ? 1 : 0, "no_pcm_constraint_flag");
  WRITE_FLAG(pcSPS->getNoTemporalMvpConstraintFlag() ? 1 : 0, "no_temporal_mvp_constraint_flag");
  WRITE_FLAG(pcSPS->getNoSbtmvpConstraintFlag() ? 1 : 0, "no_sbtmvp_constraint_flag");
  WRITE_FLAG(pcSPS->getNoAmvrConstraintFlag() ? 1 : 0, "no_amvr_constraint_flag");
  WRITE_FLAG(pcSPS->getNoAffineMotionConstraintFlag() ? 1 : 0, "no_affine_motion_constraint_flag");
  WRITE_FLAG(pcSPS->getNoMtsConstraintFlag() ? 1 : 0, "no_mts_constraint_flag");
  WRITE_FLAG(pcSPS->getNoLadfConstraintFlag() ? 1 : 0, "no_ladf_constraint_flag");
  WRITE_FLAG(pcSPS->getNoDepQuantConstraintFlag() ? 1 : 0, "no_dep_quant_constraint_flag");
  WRITE_FLAG(pcSPS->getNoSignDataHidingConstraintFlag() ? 1 : 0, "no_sign_data_hiding_constraint_flag");
#endif
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#if ENABLE_TRACING
  xTraceSPSHeader ();
#endif
#if HEVC_VPS
  WRITE_CODE( pcSPS->getVPSId (),          4,       "sps_video_parameter_set_id" );
#endif
  WRITE_CODE( pcSPS->getMaxTLayers() - 1,  3,       "sps_max_sub_layers_minus1" );
  WRITE_FLAG( pcSPS->getTemporalIdNestingFlag() ? 1 : 0, "sps_temporal_id_nesting_flag" );
  codePTL( pcSPS->getPTL(), true, pcSPS->getMaxTLayers() - 1 );
  WRITE_UVLC( pcSPS->getSPSId (),                   "sps_seq_parameter_set_id" );
  WRITE_UVLC( int(pcSPS->getChromaFormatIdc ()),    "chroma_format_idc" );
  if( format == CHROMA_444 )
  {
    WRITE_FLAG( 0,                                  "separate_colour_plane_flag");
  }

  WRITE_UVLC( pcSPS->getPicWidthInLumaSamples (),   "pic_width_in_luma_samples" );
  WRITE_UVLC( pcSPS->getPicHeightInLumaSamples(),   "pic_height_in_luma_samples" );
  Window conf = pcSPS->getConformanceWindow();

  WRITE_FLAG( conf.getWindowEnabledFlag(),          "conformance_window_flag" );
  if (conf.getWindowEnabledFlag())
  {
    WRITE_UVLC( conf.getWindowLeftOffset()   / SPS::getWinUnitX(pcSPS->getChromaFormatIdc() ), "conf_win_left_offset" );
    WRITE_UVLC( conf.getWindowRightOffset()  / SPS::getWinUnitX(pcSPS->getChromaFormatIdc() ), "conf_win_right_offset" );
    WRITE_UVLC( conf.getWindowTopOffset()    / SPS::getWinUnitY(pcSPS->getChromaFormatIdc() ), "conf_win_top_offset" );
    WRITE_UVLC( conf.getWindowBottomOffset() / SPS::getWinUnitY(pcSPS->getChromaFormatIdc() ), "conf_win_bottom_offset" );
  }

  WRITE_UVLC( pcSPS->getBitDepth(CHANNEL_TYPE_LUMA) - 8,                      "bit_depth_luma_minus8" );

  WRITE_UVLC( chromaEnabled ? (pcSPS->getBitDepth(CHANNEL_TYPE_CHROMA) - 8):0,  "bit_depth_chroma_minus8" );

  WRITE_UVLC( pcSPS->getBitsForPOC()-4,                 "log2_max_pic_order_cnt_lsb_minus4" );

  const bool subLayerOrderingInfoPresentFlag = 1;
  WRITE_FLAG(subLayerOrderingInfoPresentFlag,       "sps_sub_layer_ordering_info_present_flag");
  for(uint32_t i=0; i <= pcSPS->getMaxTLayers()-1; i++)
  {
    WRITE_UVLC( pcSPS->getMaxDecPicBuffering(i) - 1,       "sps_max_dec_pic_buffering_minus1[i]" );
    WRITE_UVLC( pcSPS->getNumReorderPics(i),               "sps_max_num_reorder_pics[i]" );
    WRITE_UVLC( pcSPS->getMaxLatencyIncreasePlus1(i),      "sps_max_latency_increase_plus1[i]" );
    if (!subLayerOrderingInfoPresentFlag)
    {
      break;
    }
  }
  CHECK( pcSPS->getMaxCUWidth() != pcSPS->getMaxCUHeight(),                          "Rectangular CTUs not supported" );
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#if JVET_L0217_L0678_PARTITION_HIGHLEVEL_CONSTRAINT
  WRITE_UVLC( pcSPS->getLog2MinCodingBlockSize() - 2,                                "log2_min_luma_coding_block_size_minus2");
#else
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  WRITE_UVLC( pcSPS->getLog2MinCodingBlockSize() - 3,                                "log2_min_luma_coding_block_size_minus3" );
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#endif
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  WRITE_UVLC( pcSPS->getLog2DiffMaxMinCodingBlockSize(),                             "log2_diff_max_min_luma_coding_block_size" );
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#endif
#if JVET_L0217_L0678_SPS_CLEANUP
  WRITE_FLAG(pcSPS->getUseDualITree(), "qtbt_dual_intra_tree");
  WRITE_UVLC(g_aucLog2[pcSPS->getCTUSize()] - MIN_CU_LOG2, "log2_CTU_size_minus2");
#if JVET_L0217_L0678_PARTITION_HIGHLEVEL_CONSTRAINT
  WRITE_UVLC(pcSPS->getLog2MinCodingBlockSize() - 2, "log2_min_luma_coding_block_size_minus2");
#else
  WRITE_UVLC(pcSPS->getLog2MinCodingBlockSize() - 3, "log2_min_luma_coding_block_size_minus3");
#endif
#if JVET_L0217_L0678_PARTITION_HIGHLEVEL_CONSTRAINT
  WRITE_FLAG(pcSPS->getSplitConsOverrideEnabledFlag(), "sps_override_partition_constraints_enable_flag");
  WRITE_UVLC(g_aucLog2[pcSPS->getMinQTSize(I_SLICE)] - pcSPS->getLog2MinCodingBlockSize(), "sps_log2_diff_min_qt_min_cb_intra_slice");
  WRITE_UVLC(g_aucLog2[pcSPS->getMinQTSize(B_SLICE)] - pcSPS->getLog2MinCodingBlockSize(), "sps_log2_diff_min_qt_min_cb_inter_slice");
  WRITE_UVLC(pcSPS->getMaxBTDepth(), "sps_max_mtt_hierarchy_depth_inter_slices");
  WRITE_UVLC(pcSPS->getMaxBTDepthI(), "sps_max_mtt_hierarchy_depth_intra_slices");
  if (pcSPS->getMaxBTDepthI() != 0)
  {
    WRITE_UVLC(g_aucLog2[pcSPS->getMaxBTSizeI()] - g_aucLog2[pcSPS->getMinQTSize(I_SLICE)], "sps_log2_diff_max_bt_min_qt_intra_slice");
    WRITE_UVLC(g_aucLog2[pcSPS->getMaxTTSizeI()] - g_aucLog2[pcSPS->getMinQTSize(I_SLICE)], "sps_log2_diff_max_tt_min_qt_intra_slice");
  }
  if (pcSPS->getMaxBTDepth() != 0)
  {
    WRITE_UVLC(g_aucLog2[pcSPS->getMaxBTSize()] - g_aucLog2[pcSPS->getMinQTSize(B_SLICE)], "sps_log2_diff_max_bt_min_qt_inter_slice");
    WRITE_UVLC(g_aucLog2[pcSPS->getMaxTTSize()] - g_aucLog2[pcSPS->getMinQTSize(B_SLICE)], "sps_log2_diff_max_tt_min_qt_inter_slice");
  }
#else
  WRITE_UVLC(g_aucLog2[pcSPS->getMinQTSize(I_SLICE)] - MIN_CU_LOG2, "log2_minQT_ISlice_minus2");
  WRITE_UVLC(g_aucLog2[pcSPS->getMinQTSize(B_SLICE)] - MIN_CU_LOG2, "log2_minQT_PBSlice_minus2");
  WRITE_UVLC(pcSPS->getMaxBTDepth(), "max_bt_depth");
  WRITE_UVLC(pcSPS->getMaxBTDepthI(), "max_bt_depth_i_slice");
#endif
  if (pcSPS->getUseDualITree())
  {
#if JVET_L0217_L0678_PARTITION_HIGHLEVEL_CONSTRAINT
    WRITE_UVLC(g_aucLog2[pcSPS->getMinQTSize(I_SLICE, CHANNEL_TYPE_CHROMA)] - pcSPS->getLog2MinCodingBlockSize(), "sps_log2_diff_min_qt_min_cb_intra_slice_chroma");
    WRITE_UVLC(pcSPS->getMaxBTDepthIChroma(), "sps_max_mtt_hierarchy_depth_intra_slices_chroma");
    if (pcSPS->getMaxBTDepthIChroma() != 0)
    {
      WRITE_UVLC(g_aucLog2[pcSPS->getMaxBTSizeIChroma()] - g_aucLog2[pcSPS->getMinQTSize(I_SLICE, CHANNEL_TYPE_CHROMA)], "sps_log2_diff_max_bt_min_qt_intra_slice_chroma");
      WRITE_UVLC(g_aucLog2[pcSPS->getMaxTTSizeIChroma()] - g_aucLog2[pcSPS->getMinQTSize(I_SLICE, CHANNEL_TYPE_CHROMA)], "sps_log2_diff_max_tt_min_qt_intra_slice_chroma");
    }
#else
    WRITE_UVLC(g_aucLog2[pcSPS->getMinQTSize(I_SLICE, CHANNEL_TYPE_CHROMA)] - MIN_CU_LOG2, "log2_minQT_ISliceChroma_minus2");
    WRITE_UVLC(pcSPS->getMaxBTDepthIChroma(), "max_bt_depth_i_slice_chroma");
#endif
  }
#endif
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  WRITE_UVLC( pcSPS->getQuadtreeTULog2MinSize() - 2,                                 "log2_min_luma_transform_block_size_minus2" );
  WRITE_UVLC( pcSPS->getQuadtreeTULog2MaxSize() - pcSPS->getQuadtreeTULog2MinSize(), "log2_diff_max_min_luma_transform_block_size" );
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#if !JVET_L0217_L0678_SPS_CLEANUP
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  WRITE_UVLC( pcSPS->getQuadtreeTUMaxDepthInter() - 1,                               "max_transform_hierarchy_depth_inter" );
  WRITE_UVLC( pcSPS->getQuadtreeTUMaxDepthIntra() - 1,                               "max_transform_hierarchy_depth_intra" );
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#endif
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  WRITE_FLAG( pcSPS->getUseALF(), "sps_alf_enable_flag" );
#if HEVC_USE_SCALING_LISTS
  WRITE_FLAG( pcSPS->getScalingListFlag() ? 1 : 0,                                   "scaling_list_enabled_flag" );
  if(pcSPS->getScalingListFlag())
  {
    WRITE_FLAG( pcSPS->getScalingListPresentFlag() ? 1 : 0,                          "sps_scaling_list_data_present_flag" );
    if(pcSPS->getScalingListPresentFlag())
    {
      codeScalingList( pcSPS->getScalingList() );
    }
  }
#endif
  WRITE_FLAG( pcSPS->getUseAMP() ? 1 : 0,                                            "amp_enabled_flag" );
  WRITE_FLAG( pcSPS->getUseSAO() ? 1 : 0,                                            "sample_adaptive_offset_enabled_flag");

  WRITE_FLAG( pcSPS->getUsePCM() ? 1 : 0,                                            "pcm_enabled_flag");
  if( pcSPS->getUsePCM() )
  {
    WRITE_CODE( pcSPS->getPCMBitDepth(CHANNEL_TYPE_LUMA) - 1, 4,                            "pcm_sample_bit_depth_luma_minus1" );
    WRITE_CODE( chromaEnabled ? (pcSPS->getPCMBitDepth(CHANNEL_TYPE_CHROMA) - 1) : 0, 4,    "pcm_sample_bit_depth_chroma_minus1" );
    WRITE_UVLC( pcSPS->getPCMLog2MinSize() - 3,                                      "log2_min_pcm_luma_coding_block_size_minus3" );
    WRITE_UVLC( pcSPS->getPCMLog2MaxSize() - pcSPS->getPCMLog2MinSize(),             "log2_diff_max_min_pcm_luma_coding_block_size" );
    WRITE_FLAG( pcSPS->getPCMFilterDisableFlag()?1 : 0,                              "pcm_loop_filter_disable_flag");
  }

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  WRITE_FLAG( pcSPS->getUseWrapAround() ? 1 : 0,                                     "ref_wraparound_enabled_flag" );
  if( pcSPS->getUseWrapAround() )
  {
    WRITE_UVLC( pcSPS->getWrapAroundOffset(),                                        "ref_wraparound_offset" );
  }

799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040
  CHECK( pcSPS->getMaxTLayers() == 0, "Maximum number of T-layers is '0'" );

  const RPSList* rpsList = pcSPS->getRPSList();

  WRITE_UVLC(rpsList->getNumberOfReferencePictureSets(), "num_short_term_ref_pic_sets" );
  for(int i=0; i < rpsList->getNumberOfReferencePictureSets(); i++)
  {
    const ReferencePictureSet*rps = rpsList->getReferencePictureSet(i);
    xCodeShortTermRefPicSet( rps,false, i);
  }
  WRITE_FLAG( pcSPS->getLongTermRefsPresent() ? 1 : 0,         "long_term_ref_pics_present_flag" );
  if (pcSPS->getLongTermRefsPresent())
  {
    WRITE_UVLC(pcSPS->getNumLongTermRefPicSPS(), "num_long_term_ref_pics_sps" );
    for (uint32_t k = 0; k < pcSPS->getNumLongTermRefPicSPS(); k++)
    {
      WRITE_CODE( pcSPS->getLtRefPicPocLsbSps(k), pcSPS->getBitsForPOC(), "lt_ref_pic_poc_lsb_sps");
      WRITE_FLAG( pcSPS->getUsedByCurrPicLtSPSFlag(k), "used_by_curr_pic_lt_sps_flag[i]");
    }
  }
  WRITE_FLAG( pcSPS->getSPSTemporalMVPEnabledFlag()  ? 1 : 0,  "sps_temporal_mvp_enabled_flag" );

#if HEVC_USE_INTRA_SMOOTHING_T32 || HEVC_USE_INTRA_SMOOTHING_T64
  WRITE_FLAG( pcSPS->getUseStrongIntraSmoothing(),             "strong_intra_smoothing_enable_flag" );

#endif
  WRITE_FLAG( pcSPS->getVuiParametersPresentFlag(),            "vui_parameters_present_flag" );
  if (pcSPS->getVuiParametersPresentFlag())
  {
    codeVUI(pcSPS->getVuiParameters(), pcSPS);
  }

  // KTA tools

  bool sps_extension_present_flag=false;
  bool sps_extension_flags[NUM_SPS_EXTENSION_FLAGS]={false};

  sps_extension_flags[SPS_EXT__REXT] = pcSPS->getSpsRangeExtension().settingsDifferFromDefaults();
  sps_extension_flags[SPS_EXT__NEXT] = pcSPS->getSpsNext().nextToolsEnabled();

  // Other SPS extension flags checked here.

  for(int i=0; i<NUM_SPS_EXTENSION_FLAGS; i++)
  {
    sps_extension_present_flag|=sps_extension_flags[i];
  }

  WRITE_FLAG( (sps_extension_present_flag?1:0), "sps_extension_present_flag" );

  if (sps_extension_present_flag)
  {
#if ENABLE_TRACING /*|| RExt__DECODER_DEBUG_BIT_STATISTICS*/
    static const char *syntaxStrings[]={ "sps_range_extension_flag",
      "sps_multilayer_extension_flag",
      "sps_extension_6bits[0]",
      "sps_extension_6bits[1]",
      "sps_extension_6bits[2]",
      "sps_extension_6bits[3]",
      "sps_extension_6bits[4]",
      "sps_extension_6bits[5]" };
#endif

    for(int i=0; i<NUM_SPS_EXTENSION_FLAGS; i++)
    {
      WRITE_FLAG( sps_extension_flags[i]?1:0, syntaxStrings[i] );
    }

    for(int i=0; i<NUM_SPS_EXTENSION_FLAGS; i++) // loop used so that the order is determined by the enum.
    {
      if (sps_extension_flags[i])
      {
        switch (SPSExtensionFlagIndex(i))
        {
        case SPS_EXT__REXT:
        {
          const SPSRExt &spsRangeExtension=pcSPS->getSpsRangeExtension();

          WRITE_FLAG( (spsRangeExtension.getTransformSkipRotationEnabledFlag() ? 1 : 0),      "transform_skip_rotation_enabled_flag");
          WRITE_FLAG( (spsRangeExtension.getTransformSkipContextEnabledFlag() ? 1 : 0),       "transform_skip_context_enabled_flag");
          WRITE_FLAG( (spsRangeExtension.getRdpcmEnabledFlag(RDPCM_SIGNAL_IMPLICIT) ? 1 : 0), "implicit_rdpcm_enabled_flag" );
          WRITE_FLAG( (spsRangeExtension.getRdpcmEnabledFlag(RDPCM_SIGNAL_EXPLICIT) ? 1 : 0), "explicit_rdpcm_enabled_flag" );
          WRITE_FLAG( (spsRangeExtension.getExtendedPrecisionProcessingFlag() ? 1 : 0),       "extended_precision_processing_flag" );
          WRITE_FLAG( (spsRangeExtension.getIntraSmoothingDisabledFlag() ? 1 : 0),            "intra_smoothing_disabled_flag" );
          WRITE_FLAG( (spsRangeExtension.getHighPrecisionOffsetsEnabledFlag() ? 1 : 0),       "high_precision_offsets_enabled_flag" );
          WRITE_FLAG( (spsRangeExtension.getPersistentRiceAdaptationEnabledFlag() ? 1 : 0),   "persistent_rice_adaptation_enabled_flag" );
          WRITE_FLAG( (spsRangeExtension.getCabacBypassAlignmentEnabledFlag() ? 1 : 0),       "cabac_bypass_alignment_enabled_flag" );
          break;
        }
        case SPS_EXT__NEXT:
        {
          codeSPSNext( pcSPS->getSpsNext(), pcSPS->getUsePCM() );
          break;
        }
        default:
          CHECK(sps_extension_flags[i]!=false, "Unknown PPS extension signalled"); // Should never get here with an active SPS extension flag.
          break;
        }
      }
    }
  }
  xWriteRbspTrailingBits();
}

#if HEVC_VPS
void HLSWriter::codeVPS( const VPS* pcVPS )
{
#if ENABLE_TRACING
  xTraceVPSHeader();
#endif
  WRITE_CODE( pcVPS->getVPSId(),                    4,        "vps_video_parameter_set_id" );
  WRITE_FLAG(                                       1,        "vps_base_layer_internal_flag" );
  WRITE_FLAG(                                       1,        "vps_base_layer_available_flag" );
  WRITE_CODE( 0,                                    6,        "vps_max_layers_minus1" );
  WRITE_CODE( pcVPS->getMaxTLayers() - 1,           3,        "vps_max_sub_layers_minus1" );
  WRITE_FLAG( pcVPS->getTemporalNestingFlag(),                "vps_temporal_id_nesting_flag" );
  CHECK(pcVPS->getMaxTLayers()<=1&&!pcVPS->getTemporalNestingFlag(), "Invalud parameters");
  WRITE_CODE( 0xffff,                              16,        "vps_reserved_0xffff_16bits" );
  codePTL( pcVPS->getPTL(), true, pcVPS->getMaxTLayers() - 1 );
  const bool subLayerOrderingInfoPresentFlag = 1;
  WRITE_FLAG(subLayerOrderingInfoPresentFlag,              "vps_sub_layer_ordering_info_present_flag");
  for(uint32_t i=0; i <= pcVPS->getMaxTLayers()-1; i++)
  {
    WRITE_UVLC( pcVPS->getMaxDecPicBuffering(i) - 1,       "vps_max_dec_pic_buffering_minus1[i]" );
    WRITE_UVLC( pcVPS->getNumReorderPics(i),               "vps_max_num_reorder_pics[i]" );
    WRITE_UVLC( pcVPS->getMaxLatencyIncrease(i),           "vps_max_latency_increase_plus1[i]" );
    if (!subLayerOrderingInfoPresentFlag)
    {
      break;
    }
  }

  CHECK( pcVPS->getNumHrdParameters() > MAX_VPS_NUM_HRD_PARAMETERS, "Too many HRD parameters" );
  CHECK( pcVPS->getMaxNuhReservedZeroLayerId() >= MAX_VPS_NUH_RESERVED_ZERO_LAYER_ID_PLUS1, "Invalid parameters read" );
  WRITE_CODE( pcVPS->getMaxNuhReservedZeroLayerId(), 6,     "vps_max_layer_id" );
  WRITE_UVLC( pcVPS->getMaxOpSets() - 1,                    "vps_num_layer_sets_minus1" );
  for( uint32_t opsIdx = 1; opsIdx <= ( pcVPS->getMaxOpSets() - 1 ); opsIdx ++ )
  {
    // Operation point set
    for( uint32_t i = 0; i <= pcVPS->getMaxNuhReservedZeroLayerId(); i ++ )
    {
      // Only applicable for version 1
      // pcVPS->setLayerIdIncludedFlag( true, opsIdx, i );
      WRITE_FLAG( pcVPS->getLayerIdIncludedFlag( opsIdx, i ) ? 1 : 0, "layer_id_included_flag[opsIdx][i]" );
    }
  }
  const TimingInfo *timingInfo = pcVPS->getTimingInfo();
  WRITE_FLAG(timingInfo->getTimingInfoPresentFlag(),          "vps_timing_info_present_flag");
  if(timingInfo->getTimingInfoPresentFlag())
  {
    WRITE_CODE(timingInfo->getNumUnitsInTick(), 32,           "vps_num_units_in_tick");
    WRITE_CODE(timingInfo->getTimeScale(),      32,           "vps_time_scale");
    WRITE_FLAG(timingInfo->getPocProportionalToTimingFlag(),  "vps_poc_proportional_to_timing_flag");
    if(timingInfo->getPocProportionalToTimingFlag())
    {
      WRITE_UVLC(timingInfo->getNumTicksPocDiffOneMinus1(),   "vps_num_ticks_poc_diff_one_minus1");
    }
    WRITE_UVLC( pcVPS->getNumHrdParameters(),                 "vps_num_hrd_parameters" );

    if( pcVPS->getNumHrdParameters() > 0 )
    {
      for( uint32_t i = 0; i < pcVPS->getNumHrdParameters(); i ++ )
      {
        // Only applicable for version 1
        WRITE_UVLC( pcVPS->getHrdOpSetIdx( i ),                "hrd_layer_set_idx" );
        if( i > 0 )
        {
          WRITE_FLAG( pcVPS->getCprmsPresentFlag( i ) ? 1 : 0, "cprms_present_flag[i]" );
        }
        codeHrdParameters(pcVPS->getHrdParameters(i), pcVPS->getCprmsPresentFlag( i ), pcVPS->getMaxTLayers() - 1);
      }
    }
  }
  WRITE_FLAG( 0,                     "vps_extension_flag" );

  //future extensions here..
  xWriteRbspTrailingBits();
}
#endif

void HLSWriter::codeSliceHeader         ( Slice* pcSlice )
{
#if ENABLE_TRACING
  xTraceSliceHeader ();
#endif

  CodingStructure& cs = *pcSlice->getPic()->cs;
  const ChromaFormat format                = pcSlice->getSPS()->getChromaFormatIdc();
  const uint32_t         numberValidComponents = getNumberValidComponents(format);
  const bool         chromaEnabled         = isChromaEnabled(format);

  //calculate number of bits required for slice address
  int maxSliceSegmentAddress = cs.pcv->sizeInCtus;
  int bitsSliceSegmentAddress = 0;
  while(maxSliceSegmentAddress>(1<<bitsSliceSegmentAddress))
  {
    bitsSliceSegmentAddress++;
  }
#if HEVC_DEPENDENT_SLICES
  const int ctuTsAddress = pcSlice->getSliceSegmentCurStartCtuTsAddr();
#else
  const int ctuTsAddress = pcSlice->getSliceCurStartCtuTsAddr();
#endif

  //write slice address
#if HEVC_TILES_WPP
  const int sliceSegmentRsAddress = pcSlice->getPic()->tileMap->getCtuTsToRsAddrMap(ctuTsAddress);
#else
  const int sliceSegmentRsAddress = ctuTsAddress;
#endif

  WRITE_FLAG( sliceSegmentRsAddress==0, "first_slice_segment_in_pic_flag" );
  if ( pcSlice->getRapPicFlag() )
  {
    WRITE_FLAG( pcSlice->getNoOutputPriorPicsFlag() ? 1 : 0, "no_output_of_prior_pics_flag" );
  }
  WRITE_UVLC( pcSlice->getPPS()->getPPSId(), "slice_pic_parameter_set_id" );
#if HEVC_DEPENDENT_SLICES
  if ( pcSlice->getPPS()->getDependentSliceSegmentsEnabledFlag() && (sliceSegmentRsAddress!=0) )
  {
    WRITE_FLAG( pcSlice->getDependentSliceSegmentFlag() ? 1 : 0, "dependent_slice_segment_flag" );
  }
#endif
  if(sliceSegmentRsAddress>0)
  {
    WRITE_CODE( sliceSegmentRsAddress, bitsSliceSegmentAddress, "slice_segment_address" );
  }
#if HEVC_DEPENDENT_SLICES
  if( !pcSlice->getDependentSliceSegmentFlag() )
  {
#endif
    for( int i = 0; i < pcSlice->getPPS()->getNumExtraSliceHeaderBits(); i++ )
    {
      WRITE_FLAG( 0, "slice_reserved_flag[]" );
    }

    WRITE_UVLC( pcSlice->getSliceType(), "slice_type" );

    if( pcSlice->getPPS()->getOutputFlagPresentFlag() )
    {
      WRITE_FLAG( pcSlice->getPicOutputFlag() ? 1 : 0, "pic_output_flag" );
    }

1041 1042 1043 1044 1045
#if JVET_L0449
    int pocBits = pcSlice->getSPS()->getBitsForPOC();
    int pocMask = (1 << pocBits) - 1;
    WRITE_CODE(pcSlice->getPOC() & pocMask, pocBits, "slice_pic_order_cnt_lsb");
#endif
1046 1047
    if( !pcSlice->getIdrPicFlag() )
    {
1048
#if !JVET_L0449
1049 1050
      int picOrderCntLSB = ( pcSlice->getPOC() - pcSlice->getLastIDR() + ( 1 << pcSlice->getSPS()->getBitsForPOC() ) ) & ( ( 1 << pcSlice->getSPS()->getBitsForPOC() ) - 1 );
      WRITE_CODE( picOrderCntLSB, pcSlice->getSPS()->getBitsForPOC(), "slice_pic_order_cnt_lsb" );
1051
#endif
1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304
      const ReferencePictureSet* rps = pcSlice->getRPS();

      // check for bitstream restriction stating that:
      // If the current picture is a BLA or CRA picture, the value of NumPocTotalCurr shall be equal to 0.
      // Ideally this process should not be repeated for each slice in a picture
      if( pcSlice->isIRAP() )
      {
        for( int picIdx = 0; picIdx < rps->getNumberOfPictures(); picIdx++ )
        {
          CHECK( rps->getUsed( picIdx ), "Picture should not be used" );
        }
      }

      if( pcSlice->getRPSidx() < 0 )
      {
        WRITE_FLAG( 0, "short_term_ref_pic_set_sps_flag" );
        xCodeShortTermRefPicSet( rps, true, pcSlice->getSPS()->getRPSList()->getNumberOfReferencePictureSets() );
      }
      else
      {
        WRITE_FLAG( 1, "short_term_ref_pic_set_sps_flag" );
        int numBits = 0;
        while( ( 1 << numBits ) < pcSlice->getSPS()->getRPSList()->getNumberOfReferencePictureSets() )
        {
          numBits++;
        }
        if( numBits > 0 )
        {
          WRITE_CODE( pcSlice->getRPSidx(), numBits, "short_term_ref_pic_set_idx" );
        }
      }
      if( pcSlice->getSPS()->getLongTermRefsPresent() )
      {
        int numLtrpInSH = rps->getNumberOfLongtermPictures();
        int ltrpInSPS[MAX_NUM_REF_PICS];
        int numLtrpInSPS = 0;
        uint32_t ltrpIndex;
        int counter = 0;
        // WARNING: The following code only works only if a matching long-term RPS is
        //          found in the SPS for ALL long-term pictures
        //          The problem is that the SPS coded long-term pictures are moved to the
        //          beginning of the list which causes a mismatch when no reference picture
        //          list reordering is used
        //          NB: Long-term coding is currently not supported in general by the HM encoder
        for( int k = rps->getNumberOfPictures() - 1; k > rps->getNumberOfPictures() - rps->getNumberOfLongtermPictures() - 1; k-- )
        {
          if( xFindMatchingLTRP( pcSlice, &ltrpIndex, rps->getPOC( k ), rps->getUsed( k ) ) )
          {
            ltrpInSPS[numLtrpInSPS] = ltrpIndex;
            numLtrpInSPS++;
          }
          else
          {
            counter++;
          }
        }
        numLtrpInSH -= numLtrpInSPS;
        // check that either all long-term pictures are coded in SPS or in slice header (no mixing)
        CHECK( numLtrpInSH != 0 && numLtrpInSPS != 0, "Long term picture not coded" );

        int bitsForLtrpInSPS = 0;
        while( pcSlice->getSPS()->getNumLongTermRefPicSPS() > ( 1 << bitsForLtrpInSPS ) )
        {
          bitsForLtrpInSPS++;
        }
        if( pcSlice->getSPS()->getNumLongTermRefPicSPS() > 0 )
        {
          WRITE_UVLC( numLtrpInSPS, "num_long_term_sps" );
        }
        WRITE_UVLC( numLtrpInSH, "num_long_term_pics" );
        // Note that the LSBs of the LT ref. pic. POCs must be sorted before.
        // Not sorted here because LT ref indices will be used in setRefPicList()
        int prevDeltaMSB = 0, prevLSB = 0;
        int offset = rps->getNumberOfNegativePictures() + rps->getNumberOfPositivePictures();
        counter = 0;
        // Warning: If some pictures are moved to ltrpInSPS, i is referring to a wrong index
        //          (mapping would be required)
        for( int i = rps->getNumberOfPictures() - 1; i > offset - 1; i--, counter++ )
        {
          if( counter < numLtrpInSPS )
          {
            if( bitsForLtrpInSPS > 0 )
            {
              WRITE_CODE( ltrpInSPS[counter], bitsForLtrpInSPS, "lt_idx_sps[i]" );
            }
          }
          else
          {
            WRITE_CODE( rps->getPocLSBLT( i ), pcSlice->getSPS()->getBitsForPOC(), "poc_lsb_lt" );
            WRITE_FLAG( rps->getUsed( i ), "used_by_curr_pic_lt_flag" );
          }
          WRITE_FLAG( rps->getDeltaPocMSBPresentFlag( i ), "delta_poc_msb_present_flag" );

          if( rps->getDeltaPocMSBPresentFlag( i ) )
          {
            bool deltaFlag = false;
            //  First LTRP from SPS                 ||  First LTRP from SH                              || curr LSB            != prev LSB
            if( ( i == rps->getNumberOfPictures() - 1 ) || ( i == rps->getNumberOfPictures() - 1 - numLtrpInSPS ) || ( rps->getPocLSBLT( i ) != prevLSB ) )
            {
              deltaFlag = true;
            }
            if( deltaFlag )
            {
              WRITE_UVLC( rps->getDeltaPocMSBCycleLT( i ), "delta_poc_msb_cycle_lt[i]" );
            }
            else
            {
              int differenceInDeltaMSB = rps->getDeltaPocMSBCycleLT( i ) - prevDeltaMSB;
              CHECK( differenceInDeltaMSB < 0, "Negative diff. delta MSB" );
              WRITE_UVLC( differenceInDeltaMSB, "delta_poc_msb_cycle_lt[i]" );
            }
            prevLSB = rps->getPocLSBLT( i );
            prevDeltaMSB = rps->getDeltaPocMSBCycleLT( i );
          }
        }
      }
      if( pcSlice->getSPS()->getSPSTemporalMVPEnabledFlag() )
      {
        WRITE_FLAG( pcSlice->getEnableTMVPFlag() ? 1 : 0, "slice_temporal_mvp_enabled_flag" );
      }
    }
    if( pcSlice->getSPS()->getUseSAO() )
    {
      WRITE_FLAG( pcSlice->getSaoEnabledFlag( CHANNEL_TYPE_LUMA ), "slice_sao_luma_flag" );
      if( chromaEnabled )
      {
        WRITE_FLAG( pcSlice->getSaoEnabledFlag( CHANNEL_TYPE_CHROMA ), "slice_sao_chroma_flag" );
      }
    }

    if( pcSlice->getSPS()->getUseALF() )
    {
      alf( pcSlice->getAlfSliceParam() );
    }

    //check if numrefidxes match the defaults. If not, override

    if( !pcSlice->isIntra() )
    {
      bool overrideFlag = ( pcSlice->getNumRefIdx( REF_PIC_LIST_0 ) != pcSlice->getPPS()->getNumRefIdxL0DefaultActive() || ( pcSlice->isInterB() && pcSlice->getNumRefIdx( REF_PIC_LIST_1 ) != pcSlice->getPPS()->getNumRefIdxL1DefaultActive() ) );
      WRITE_FLAG( overrideFlag ? 1 : 0, "num_ref_idx_active_override_flag" );
      if( overrideFlag )
      {
        WRITE_UVLC( pcSlice->getNumRefIdx( REF_PIC_LIST_0 ) - 1, "num_ref_idx_l0_active_minus1" );
        if( pcSlice->isInterB() )
        {
          WRITE_UVLC( pcSlice->getNumRefIdx( REF_PIC_LIST_1 ) - 1, "num_ref_idx_l1_active_minus1" );
        }
        else
        {
          pcSlice->setNumRefIdx( REF_PIC_LIST_1, 0 );
        }
      }
    }
    else
    {
      pcSlice->setNumRefIdx( REF_PIC_LIST_0, 0 );
      pcSlice->setNumRefIdx( REF_PIC_LIST_1, 0 );
    }

    if( pcSlice->getPPS()->getListsModificationPresentFlag() && pcSlice->getNumRpsCurrTempList() > 1 )
    {
      RefPicListModification* refPicListModification = pcSlice->getRefPicListModification();
      if( !pcSlice->isIntra() )
      {
        WRITE_FLAG( pcSlice->getRefPicListModification()->getRefPicListModificationFlagL0() ? 1 : 0, "ref_pic_list_modification_flag_l0" );
        if( pcSlice->getRefPicListModification()->getRefPicListModificationFlagL0() )
        {
          int numRpsCurrTempList0 = pcSlice->getNumRpsCurrTempList();
          if( numRpsCurrTempList0 > 1 )
          {
            int length = 1;
            numRpsCurrTempList0--;
            while( numRpsCurrTempList0 >>= 1 )
            {
              length++;
            }
            for( int i = 0; i < pcSlice->getNumRefIdx( REF_PIC_LIST_0 ); i++ )
            {
              WRITE_CODE( refPicListModification->getRefPicSetIdxL0( i ), length, "list_entry_l0" );
            }
          }
        }
      }
      if( pcSlice->isInterB() )
      {
        WRITE_FLAG( pcSlice->getRefPicListModification()->getRefPicListModificationFlagL1() ? 1 : 0, "ref_pic_list_modification_flag_l1" );
        if( pcSlice->getRefPicListModification()->getRefPicListModificationFlagL1() )
        {
          int numRpsCurrTempList1 = pcSlice->getNumRpsCurrTempList();
          if( numRpsCurrTempList1 > 1 )
          {
            int length = 1;
            numRpsCurrTempList1--;
            while( numRpsCurrTempList1 >>= 1 )
            {
              length++;
            }
            for( int i = 0; i < pcSlice->getNumRefIdx( REF_PIC_LIST_1 ); i++ )
            {
              WRITE_CODE( refPicListModification->getRefPicSetIdxL1( i ), length, "list_entry_l1" );
            }
          }
        }
      }
    }

    if( pcSlice->isInterB() )
    {
      WRITE_FLAG( pcSlice->getMvdL1ZeroFlag() ? 1 : 0, "mvd_l1_zero_flag" );
    }

    if( !pcSlice->isIntra() )
    {
      if( !pcSlice->isIntra() && pcSlice->getPPS()->getCabacInitPresentFlag() )
      {
        SliceType sliceType = pcSlice->getSliceType();
        SliceType  encCABACTableIdx = pcSlice->getEncCABACTableIdx();
        bool encCabacInitFlag = ( sliceType != encCABACTableIdx && encCABACTableIdx != I_SLICE ) ? true : false;
        pcSlice->setCabacInitFlag( encCabacInitFlag );
        WRITE_FLAG( encCabacInitFlag ? 1 : 0, "cabac_init_flag" );
      }
    }

    if( pcSlice->getEnableTMVPFlag() )
    {
      if( pcSlice->getSliceType() == B_SLICE )
      {
        WRITE_FLAG( pcSlice->getColFromL0Flag(), "collocated_from_l0_flag" );
      }

      if( pcSlice->getSliceType() != I_SLICE &&
        ( ( pcSlice->getColFromL0Flag() == 1 && pcSlice->getNumRefIdx( REF_PIC_LIST_0 ) > 1 ) ||
          ( pcSlice->getColFromL0Flag() == 0 && pcSlice->getNumRefIdx( REF_PIC_LIST_1 ) > 1 ) ) )
      {
        WRITE_UVLC( pcSlice->getColRefIdx(), "collocated_ref_idx" );
      }
    }
    if( ( pcSlice->getPPS()->getUseWP() && pcSlice->getSliceType() == P_SLICE ) || ( pcSlice->getPPS()->getWPBiPred() && pcSlice->getSliceType() == B_SLICE ) )
    {
      xCodePredWeightTable( pcSlice );
    }
    WRITE_FLAG( pcSlice->getDepQuantEnabledFlag() ? 1 : 0, "dep_quant_enable_flag" );
#if HEVC_USE_SIGN_HIDING
    if( !pcSlice->getDepQuantEnabledFlag() )
    {
      WRITE_FLAG( pcSlice->getSignDataHidingEnabledFlag() ? 1 : 0, "sign_data_hiding_enable_flag" );
    }
    else
    {
      CHECK( pcSlice->getSignDataHidingEnabledFlag(), "sign data hiding not supported when dependent quantization is enabled" );
    }
#endif
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#if JVET_L0217_L0678_PARTITION_HIGHLEVEL_CONSTRAINT
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    if (
#if JVET_L0217_L0678_SPS_CLEANUP
      pcSlice->getSPS()->getSplitConsOverrideEnabledFlag()
#else
      pcSlice->getSPS()->getSpsNext().getSplitConsOverrideEnabledFlag()
#endif
      )
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    {
      WRITE_FLAG(pcSlice->getSplitConsOverrideFlag() ? 1 : 0, "partition_constrainst_override_flag");
      if (pcSlice->getSplitConsOverrideFlag())
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      {
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        WRITE_UVLC(g_aucLog2[pcSlice->getMinQTSize()] - pcSlice->getSPS()->getLog2MinCodingBlockSize(), "log2_diff_min_qt_min_cb");
        WRITE_UVLC(pcSlice->getMaxBTDepth(), "max_bt_depth");
        if (pcSlice->getMaxBTDepth() != 0)
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        {
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          CHECK(pcSlice->getMaxBTSize() < pcSlice->getMinQTSize(), "maxBtSize is smaller than minQtSize");
          WRITE_UVLC(g_aucLog2[pcSlice->getMaxBTSize()] - g_aucLog2[pcSlice->getMinQTSize()], "log2_diff_max_bt_min_qt");
          CHECK(pcSlice->getMaxTTSize() < pcSlice->getMinQTSize(), "maxTtSize is smaller than minQtSize");
          WRITE_UVLC(g_aucLog2[pcSlice->getMaxTTSize()] - g_aucLog2[pcSlice->getMinQTSize()], "log2_diff_max_tt_min_qt");
        }
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        if (
#if JVET_L0217_L0678_SPS_CLEANUP
          pcSlice->isIntra() && pcSlice->getSPS()->getUseDualITree()
#else
          pcSlice->isIntra() && pcSlice->getSPS()->getSpsNext().getUseDualITree()
#endif
          )
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        {
          WRITE_UVLC(g_aucLog2[pcSlice->getMinQTSizeIChroma()] - pcSlice->getSPS()->getLog2MinCodingBlockSize(), "log2_diff_min_qt_min_cb_chroma");
          WRITE_UVLC(pcSlice->getMaxBTDepthIChroma(), "max_mtt_hierarchy_depth_chroma");
          if (pcSlice->getMaxBTDepthIChroma() != 0)
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          {
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            CHECK(pcSlice->getMaxBTSizeIChroma() < pcSlice->getMinQTSizeIChroma(), "maxBtSizeC is smaller than minQtSizeC");
            WRITE_UVLC(g_aucLog2[pcSlice->getMaxBTSizeIChroma()] - g_aucLog2[pcSlice->getMinQTSizeIChroma()], "log2_diff_max_bt_min_qt_chroma");
            CHECK(pcSlice->getMaxTTSizeIChroma() < pcSlice->getMinQTSizeIChroma(), "maxTtSizeC is smaller than minQtSizeC");
            WRITE_UVLC(g_aucLog2[pcSlice->getMaxTTSizeIChroma()] - g_aucLog2[pcSlice->getMinQTSizeIChroma()], "log2_diff_max_tt_min_qt_chroma");
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          }
        }
      }
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    }
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#else
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    if( !pcSlice->isIntra() )
    {
      if( pcSlice->getSPS()->getSpsNext().getCTUSize() > pcSlice->getMaxBTSize() )
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      {
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        WRITE_UVLC( g_aucLog2[pcSlice->getSPS()->getSpsNext().getCTUSize()] - g_aucLog2[pcSlice->getMaxBTSize()], "max_binary_tree_unit_size" );
      }
      else
      {
        WRITE_UVLC( 0, "max_binary_tree_unit_size" );
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      }
    }
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#endif
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    if( !pcSlice->isIntra() )
    {
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      CHECK( pcSlice->getMaxNumMergeCand() > MRG_MAX_NUM_CANDS, "More merge candidates signalled than supported" );
      WRITE_UVLC( MRG_MAX_NUM_CANDS - pcSlice->getMaxNumMergeCand(), "six_minus_max_num_merge_cand" );

      if ( pcSlice->getSPS()->getSpsNext().getUseSubPuMvp() && !pcSlice->getSPS()->getSpsNext().getUseAffine() ) // ATMVP only
      {
        CHECK( pcSlice->getMaxNumAffineMergeCand() != 1, "Sub-block merge can number should be 1" );
      }
      else
      if ( !pcSlice->getSPS()->getSpsNext().getUseSubPuMvp() && !pcSlice->getSPS()->getSpsNext().getUseAffine() ) // both off
      {
        CHECK( pcSlice->getMaxNumAffineMergeCand() != 0, "Sub-block merge can number should be 0" );
      }
      else
      if ( pcSlice->getSPS()->getSpsNext().getUseAffine() )
      {
        CHECK( pcSlice->getMaxNumAffineMergeCand() > AFFINE_MRG_MAX_NUM_CANDS, "More affine merge candidates signalled than supported" );
        WRITE_UVLC( AFFINE_MRG_MAX_NUM_CANDS - pcSlice->getMaxNumAffineMergeCand(), "five_minus_max_num_affine_merge_cand" );
      }
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    }
    int iCode = pcSlice->getSliceQp() - ( pcSlice->getPPS()->getPicInitQPMinus26() + 26 );
    WRITE_SVLC( iCode, "slice_qp_delta" );
    if (pcSlice->getPPS()->getSliceChromaQpFlag())
    {
      if (numberValidComponents > COMPONENT_Cb)
      {
        WRITE_SVLC( pcSlice->getSliceChromaQpDelta(COMPONENT_Cb), "slice_cb_qp_offset" );
      }
      if (numberValidComponents > COMPONENT_Cr)
      {
        WRITE_SVLC( pcSlice->getSliceChromaQpDelta(COMPONENT_Cr), "slice_cr_qp_offset" );
      }
      CHECK(numberValidComponents < COMPONENT_Cr+1, "Too many valid components");
    }

    if (pcSlice->getPPS()->getPpsRangeExtension().getChromaQpOffsetListEnabledFlag())
    {
      WRITE_FLAG(pcSlice->getUseChromaQpAdj(), "cu_chroma_qp_offset_enabled_flag");
    }

    if (pcSlice->getPPS()->getDeblockingFilterControlPresentFlag())
    {
      if (pcSlice->getPPS()->getDeblockingFilterOverrideEnabledFlag() )
      {
        WRITE_FLAG(pcSlice->getDeblockingFilterOverrideFlag(), "deblocking_filter_override_flag");
      }
      if (pcSlice->getDeblockingFilterOverrideFlag())
      {
        WRITE_FLAG(pcSlice->getDeblockingFilterDisable(), "slice_deblocking_filter_disabled_flag");
        if(!pcSlice->getDeblockingFilterDisable())
        {
          WRITE_SVLC (pcSlice->getDeblockingFilterBetaOffsetDiv2(), "slice_beta_offset_div2");
          WRITE_SVLC (pcSlice->getDeblockingFilterTcOffsetDiv2(),   "slice_tc_offset_div2");
        }
      }
    }

    bool isSAOEnabled = pcSlice->getSPS()->getUseSAO() && (pcSlice->getSaoEnabledFlag(CHANNEL_TYPE_LUMA) || (chromaEnabled && pcSlice->getSaoEnabledFlag(CHANNEL_TYPE_CHROMA)));
    bool isDBFEnabled = (!pcSlice->getDeblockingFilterDisable());

    if(pcSlice->getPPS()->getLoopFilterAcrossSlicesEnabledFlag() && ( isSAOEnabled || isDBFEnabled ))
    {
      WRITE_FLAG(pcSlice->getLFCrossSliceBoundaryFlag()?1:0, "slice_loop_filter_across_slices_enabled_flag");
    }
#if HEVC_DEPENDENT_SLICES
  }
#endif

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#if !JVET_L0198_L0468_L0104_ATMVP_8x8SUB_BLOCK
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  if (pcSlice->getSPS()->getSpsNext().getUseSubPuMvp() && !pcSlice->isIntra())
  {
    WRITE_FLAG(pcSlice->getSubPuMvpSliceSubblkSizeEnable(), "slice_atmvp_subblk_size_enable_flag");
    if (pcSlice->getSubPuMvpSliceSubblkSizeEnable())
    {
      WRITE_CODE(pcSlice->getSubPuMvpSubblkLog2Size() - MIN_CU_LOG2, 3, "log2_slice_sub_pu_tmvp_size_minus2");
    }
  }
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#endif
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  if(pcSlice->getPPS()->getSliceHeaderExtensionPresentFlag())
  {
    WRITE_UVLC(0,"slice_segment_header_extension_length");
  }

}


void HLSWriter::codePTL( const PTL* pcPTL, bool profilePresentFlag, int maxNumSubLayersMinus1)
{
  if(profilePresentFlag)
  {
    codeProfileTier(pcPTL->getGeneralPTL(), false);    // general_...
  }
  WRITE_CODE( int(pcPTL->getGeneralPTL()->getLevelIdc()), 8, "general_level_idc" );

  for (int i = 0; i < maxNumSubLayersMinus1; i++)
  {
    WRITE_FLAG( pcPTL->getSubLayerProfilePresentFlag(i), "sub_layer_profile_present_flag[i]" );
    WRITE_FLAG( pcPTL->getSubLayerLevelPresentFlag(i),   "sub_layer_level_present_flag[i]" );
  }

  if (maxNumSubLayersMinus1 > 0)
  {
    for (int i = maxNumSubLayersMinus1; i < 8; i++)
    {
      WRITE_CODE(0, 2, "reserved_zero_2bits");
    }
  }

  for(int i = 0; i < maxNumSubLayersMinus1; i++)
  {
    if( pcPTL->getSubLayerProfilePresentFlag(i) )
    {
      codeProfileTier(pcPTL->getSubLayerPTL(i), true);  // sub_layer_...
    }
    if( pcPTL->getSubLayerLevelPresentFlag(i) )
    {
      WRITE_CODE( int(pcPTL->getSubLayerPTL(i)->getLevelIdc()), 8, "sub_layer_level_idc[i]" );
    }
  }
}

#if ENABLE_TRACING || RExt__DECODER_DEBUG_BIT_STATISTICS
void HLSWriter::codeProfileTier( const ProfileTierLevel* ptl, const bool bIsSubLayer )
#define PTL_TRACE_TEXT(txt) bIsSubLayer?("sub_layer_" txt) : ("general_" txt)
#else
void HLSWriter::codeProfileTier( const ProfileTierLevel* ptl, const bool /*bIsSubLayer*/ )
#define PTL_TRACE_TEXT(txt) txt
#endif
{
  WRITE_CODE( ptl->getProfileSpace(), 2 ,      PTL_TRACE_TEXT("profile_space"                   ));
  WRITE_FLAG( ptl->getTierFlag()==Level::HIGH, PTL_TRACE_TEXT("tier_flag"                       ));
  WRITE_CODE( int(ptl->getProfileIdc()), 5 ,   PTL_TRACE_TEXT("profile_idc"                     ));
  for(int j = 0; j < 32; j++)
  {
    WRITE_FLAG( ptl->getProfileCompatibilityFlag(j), PTL_TRACE_TEXT("profile_compatibility_flag[][j]" ));
  }

  WRITE_FLAG(ptl->getProgressiveSourceFlag(),   PTL_TRACE_TEXT("progressive_source_flag"         ));
  WRITE_FLAG(ptl->getInterlacedSourceFlag(),    PTL_TRACE_TEXT("interlaced_source_flag"          ));
  WRITE_FLAG(ptl->getNonPackedConstraintFlag(), PTL_TRACE_TEXT("non_packed_constraint_flag"      ));
  WRITE_FLAG(ptl->getFrameOnlyConstraintFlag(), PTL_TRACE_TEXT("frame_only_constraint_flag"      ));

  if (ptl->getProfileIdc() == Profile::MAINREXT || ptl->getProfileIdc() == Profile::HIGHTHROUGHPUTREXT )
  {
    const uint32_t         bitDepthConstraint=ptl->getBitDepthConstraint();
    WRITE_FLAG(bitDepthConstraint<=12,          PTL_TRACE_TEXT("max_12bit_constraint_flag"       ));
    WRITE_FLAG(bitDepthConstraint<=10,          PTL_TRACE_TEXT("max_10bit_constraint_flag"       ));
    WRITE_FLAG(bitDepthConstraint<= 8,          PTL_TRACE_TEXT("max_8bit_constraint_flag"        ));
    const ChromaFormat chromaFmtConstraint=ptl->getChromaFormatConstraint();
    WRITE_FLAG(chromaFmtConstraint==CHROMA_422||chromaFmtConstraint==CHROMA_420||chromaFmtConstraint==CHROMA_400, PTL_TRACE_TEXT("max_422chroma_constraint_flag" ));
    WRITE_FLAG(chromaFmtConstraint==CHROMA_420||chromaFmtConstraint==CHROMA_400,                                  PTL_TRACE_TEXT("max_420chroma_constraint_flag" ));
    WRITE_FLAG(chromaFmtConstraint==CHROMA_400,                                                                   PTL_TRACE_TEXT("max_monochrome_constraint_flag"));
    WRITE_FLAG(ptl->getIntraConstraintFlag(),          PTL_TRACE_TEXT("intra_constraint_flag"           ));
    WRITE_FLAG(ptl->getOnePictureOnlyConstraintFlag(), PTL_TRACE_TEXT("one_picture_only_constraint_flag"));
    WRITE_FLAG(ptl->getLowerBitRateConstraintFlag(),   PTL_TRACE_TEXT("lower_bit_rate_constraint_flag"  ));
    WRITE_CODE(0 , 16, PTL_TRACE_TEXT("reserved_zero_34bits[0..15]"     ));
    WRITE_CODE(0 , 16, PTL_TRACE_TEXT("reserved_zero_34bits[16..31]"    ));
    WRITE_CODE(0 ,  2, PTL_TRACE_TEXT("reserved_zero_34bits[32..33]"    ));
  }
  else
  {
    WRITE_CODE(0x0000 , 16, PTL_TRACE_TEXT("reserved_zero_43bits[0..15]"     ));
    WRITE_CODE(0x0000 , 16, PTL_TRACE_TEXT("reserved_zero_43bits[16..31]"    ));
    WRITE_CODE(0x000  , 11, PTL_TRACE_TEXT("reserved_zero_43bits[32..42]"    ));
  }
  WRITE_FLAG(false,   PTL_TRACE_TEXT("reserved_zero_bit" ));
#undef PTL_TRACE_TEXT
}

#if HEVC_TILES_WPP
/**
* Write tiles and wavefront substreams sizes for the slice header (entry points).
*
* \param pSlice Slice structure that contains the substream size information.
*/
void  HLSWriter::codeTilesWPPEntryPoint( Slice* pSlice )
{
  if (!pSlice->getPPS()->getTilesEnabledFlag() && !pSlice->getPPS()->getEntropyCodingSyncEnabledFlag())
  {
    return;
  }
  uint32_t maxOffset = 0;
  for(int idx=0; idx<pSlice->getNumberOfSubstreamSizes(); idx++)
  {
    uint32_t offset=pSlice->getSubstreamSize(idx);
    if ( offset > maxOffset )
    {
      maxOffset = offset;
    }
  }

  // Determine number of bits "offsetLenMinus1+1" required for entry point information
  uint32_t offsetLenMinus1 = 0;
  while (maxOffset >= (1u << (offsetLenMinus1 + 1)))
  {
    offsetLenMinus1++;
    CHECK(offsetLenMinus1 + 1 >= 32, "Invalid offset lenght minus 1");
  }

  WRITE_UVLC(pSlice->getNumberOfSubstreamSizes(), "num_entry_point_offsets");
  if (pSlice->getNumberOfSubstreamSizes()>0)
  {
    WRITE_UVLC(offsetLenMinus1, "offset_len_minus1");

    for (uint32_t idx=0; idx<pSlice->getNumberOfSubstreamSizes(); idx++)
    {
      WRITE_CODE(pSlice->getSubstreamSize(idx)-1, offsetLenMinus1+1, "entry_point_offset_minus1");
    }
  }
}
#endif


// ====================================================================================================================
// Protected member functions
// ====================================================================================================================

//! Code weighted prediction tables
void HLSWriter::xCodePredWeightTable( Slice* pcSlice )
{
  WPScalingParam  *wp;
  const ChromaFormat    format                = pcSlice->getSPS()->getChromaFormatIdc();
  const uint32_t            numberValidComponents = getNumberValidComponents(format);
  const bool            bChroma               = isChromaEnabled(format);
  const int             iNbRef                = (pcSlice->getSliceType() == B_SLICE ) ? (2) : (1);
  bool            bDenomCoded           = false;
  uint32_t            uiTotalSignalledWeightFlags = 0;

  if ( (pcSlice->getSliceType()==P_SLICE && pcSlice->getPPS()->getUseWP()) || (pcSlice->getSliceType()==B_SLICE && pcSlice->getPPS()->getWPBiPred()) )
  {
    for ( int iNumRef=0 ; iNumRef<iNbRef ; iNumRef++ ) // loop over l0 and l1 syntax elements
    {
      RefPicList  eRefPicList = ( iNumRef ? REF_PIC_LIST_1 : REF_PIC_LIST_0 );

      // NOTE: wp[].uiLog2WeightDenom and wp[].bPresentFlag are actually per-channel-type settings.

      for ( int iRefIdx=0 ; iRefIdx<pcSlice->getNumRefIdx(eRefPicList) ; iRefIdx++ )
      {
        pcSlice->getWpScaling(eRefPicList, iRefIdx, wp);
        if ( !bDenomCoded )
        {
          int iDeltaDenom;
          WRITE_UVLC( wp[COMPONENT_Y].uiLog2WeightDenom, "luma_log2_weight_denom" );

          if( bChroma )
          {
            CHECK( wp[COMPONENT_Cb].uiLog2WeightDenom != wp[COMPONENT_Cr].uiLog2WeightDenom, "Chroma blocks of different size not supported" );
            iDeltaDenom = (wp[COMPONENT_Cb].uiLog2WeightDenom - wp[COMPONENT_Y].uiLog2WeightDenom);
            WRITE_SVLC( iDeltaDenom, "delta_chroma_log2_weight_denom" );
          }
          bDenomCoded = true;
        }
        WRITE_FLAG( wp[COMPONENT_Y].bPresentFlag, iNumRef==0?"luma_weight_l0_flag[i]":"luma_weight_l1_flag[i]" );
        uiTotalSignalledWeightFlags += wp[COMPONENT_Y].bPresentFlag;
      }
      if (bChroma)
      {
        for ( int iRefIdx=0 ; iRefIdx<pcSlice->getNumRefIdx(eRefPicList) ; iRefIdx++ )
        {
          pcSlice->getWpScaling( eRefPicList, iRefIdx, wp );
          CHECK( wp[COMPONENT_Cb].bPresentFlag != wp[COMPONENT_Cr].bPresentFlag, "Inconsistent settings for chroma channels" );
          WRITE_FLAG( wp[COMPONENT_Cb].bPresentFlag, iNumRef==0?"chroma_weight_l0_flag[i]":"chroma_weight_l1_flag[i]" );
          uiTotalSignalledWeightFlags += 2*wp[COMPONENT_Cb].bPresentFlag;
        }
      }

      for ( int iRefIdx=0 ; iRefIdx<pcSlice->getNumRefIdx(eRefPicList) ; iRefIdx++ )
      {
        pcSlice->getWpScaling(eRefPicList, iRefIdx, wp);
        if ( wp[COMPONENT_Y].bPresentFlag )
        {
          int iDeltaWeight = (wp[COMPONENT_Y].iWeight - (1<<wp[COMPONENT_Y].uiLog2WeightDenom));
          WRITE_SVLC( iDeltaWeight, iNumRef==0?"delta_luma_weight_l0[i]":"delta_luma_weight_l1[i]" );
          WRITE_SVLC( wp[COMPONENT_Y].iOffset, iNumRef==0?"luma_offset_l0[i]":"luma_offset_l1[i]" );
        }

        if ( bChroma )
        {
          if ( wp[COMPONENT_Cb].bPresentFlag )
          {
            for ( int j = COMPONENT_Cb ; j < numberValidComponents ; j++ )
            {
              CHECK(wp[COMPONENT_Cb].uiLog2WeightDenom != wp[COMPONENT_Cr].uiLog2WeightDenom, "Chroma blocks of different size not supported");
              int iDeltaWeight = (wp[j].iWeight - (1<<wp[COMPONENT_Cb].uiLog2WeightDenom));
              WRITE_SVLC( iDeltaWeight, iNumRef==0?"delta_chroma_weight_l0[i]":"delta_chroma_weight_l1[i]" );

              int range=pcSlice->getSPS()->getSpsRangeExtension().getHighPrecisionOffsetsEnabledFlag() ? (1<<pcSlice->getSPS()->getBitDepth(CHANNEL_TYPE_CHROMA))/2 : 128;
              int pred = ( range - ( ( range*wp[j].iWeight)>>(wp[j].uiLog2WeightDenom) ) );
              int iDeltaChroma = (wp[j].iOffset - pred);
              WRITE_SVLC( iDeltaChroma, iNumRef==0?"delta_chroma_offset_l0[i]":"delta_chroma_offset_l1[i]" );
            }
          }
        }
      }
    }
    CHECK(uiTotalSignalledWeightFlags>24, "Too many signalled weight flags");
  }
}

#if HEVC_USE_SCALING_LISTS
/** code quantization matrix
*  \param scalingList quantization matrix information
*/
void HLSWriter::codeScalingList( const ScalingList &scalingList )
{
  //for each size
  for(uint32_t sizeId = SCALING_LIST_FIRST_CODED; sizeId <= SCALING_LIST_LAST_CODED; sizeId++)
  {
    const int predListStep = (sizeId == SCALING_LIST_32x32? (SCALING_LIST_NUM/NUMBER_OF_PREDICTION_MODES) : 1); // if 32x32, skip over chroma entries.

    for(uint32_t listId = 0; listId < SCALING_LIST_NUM; listId+=predListStep)
    {
      bool scalingListPredModeFlag = scalingList.getScalingListPredModeFlag(sizeId, listId);
      WRITE_FLAG( scalingListPredModeFlag, "scaling_list_pred_mode_flag" );
      if(!scalingListPredModeFlag)// Copy Mode
      {
        if (sizeId == SCALING_LIST_32x32)
        {
          // adjust the code, to cope with the missing chroma entries
          WRITE_UVLC( ((int)listId - (int)scalingList.getRefMatrixId (sizeId,listId)) / (SCALING_LIST_NUM/NUMBER_OF_PREDICTION_MODES), "scaling_list_pred_matrix_id_delta");
        }
        else
        {
          WRITE_UVLC( (int)listId - (int)scalingList.getRefMatrixId (sizeId,listId), "scaling_list_pred_matrix_id_delta");
        }
      }
      else// DPCM Mode
      {
        xCodeScalingList(&scalingList, sizeId, listId);
      }
    }
  }
  return;
}
/** code DPCM
* \param scalingList quantization matrix information
* \param sizeId      size index
* \param listId      list index
*/
void HLSWriter::xCodeScalingList(const ScalingList* scalingList, uint32_t sizeId, uint32_t listId)
{
  int coefNum = std::min( MAX_MATRIX_COEF_NUM, ( int ) g_scalingListSize[sizeId] );
  uint32_t* scan = g_scanOrder[SCAN_UNGROUPED][SCAN_DIAG][gp_sizeIdxInfo->idxFrom( 1 << ( sizeId == SCALING_LIST_FIRST_CODED ? 2 : 3 ) )][gp_sizeIdxInfo->idxFrom( 1 << ( sizeId == SCALING_LIST_FIRST_CODED ? 2 : 3 ) )];
  int nextCoef = SCALING_LIST_START_VALUE;
  int data;
  const int *src = scalingList->getScalingListAddress(sizeId, listId);
  if( sizeId > SCALING_LIST_8x8 )
  {
    WRITE_SVLC( scalingList->getScalingListDC(sizeId,listId) - 8, "scaling_list_dc_coef_minus8");
    nextCoef = scalingList->getScalingListDC(sizeId,listId);
  }
  for(int i=0;i<coefNum;i++)
  {
    data = src[scan[i]] - nextCoef;
    nextCoef = src[scan[i]];
    if(data > 127)
    {
      data = data - 256;
    }
    if(data < -128)
    {
      data = data + 256;
    }

    WRITE_SVLC( data,  "scaling_list_delta_coef");
  }
}
#endif

bool HLSWriter::xFindMatchingLTRP(Slice* pcSlice, uint32_t *ltrpsIndex, int ltrpPOC, bool usedFlag)
{
  // bool state = true, state2 = false;
  int lsb = ltrpPOC & ((1<<pcSlice->getSPS()->getBitsForPOC())-1);
  for (int k = 0; k < pcSlice->getSPS()->getNumLongTermRefPicSPS(); k++)
  {
    if ( (lsb == pcSlice->getSPS()->getLtRefPicPocLsbSps(k)) && (usedFlag == pcSlice->getSPS()->getUsedByCurrPicLtSPSFlag(k)) )
    {
      *ltrpsIndex = k;
      return true;
    }
  }
  return false;
}

void HLSWriter::alf( const AlfSliceParam& alfSliceParam )
{
  WRITE_FLAG( alfSliceParam.enabledFlag[COMPONENT_Y], "alf_slice_enable_flag" );
  if( !alfSliceParam.enabledFlag[COMPONENT_Y] )
  {
    return;
  }

  const int alfChromaIdc = alfSliceParam.enabledFlag[COMPONENT_Cb] * 2 + alfSliceParam.enabledFlag[COMPONENT_Cr];
  truncatedUnaryEqProb( alfChromaIdc, 3 );   // alf_chroma_idc

  xWriteTruncBinCode( alfSliceParam.numLumaFilters - 1, MAX_NUM_ALF_CLASSES );  //number_of_filters_minus1
  if( alfSliceParam.numLumaFilters > 1 )
  {
    for( int i = 0; i < MAX_NUM_ALF_CLASSES; i++ )
    {
      xWriteTruncBinCode( (uint32_t)alfSliceParam.filterCoeffDeltaIdx[i], alfSliceParam.numLumaFilters );  //filter_coeff_delta[i]
    }
  }

  alfFilter( alfSliceParam, false );

  if( alfChromaIdc )
  {
    alfFilter( alfSliceParam, true );
  }
}

void HLSWriter::alfGolombEncode( int coeff, int k )
{
  int symbol = abs( coeff );

  int m = (int)pow( 2.0, k );
  int q = symbol / m;

  for( int i = 0; i < q; i++ )
  {
    xWriteFlag( 1 );
  }
  xWriteFlag( 0 );
  // write one zero

  for( int i = 0; i < k; i++ )
  {
    xWriteFlag( symbol & 0x01 );
    symbol >>= 1;
  }

  if( coeff != 0 )
  {
    int sign = ( coeff > 0 ) ? 1 : 0;
    xWriteFlag( sign );
  }
}

void HLSWriter::alfFilter( const AlfSliceParam& alfSliceParam, const bool isChroma )
{
  if( !isChroma )
  {
    WRITE_FLAG( alfSliceParam.coeffDeltaFlag, "alf_coefficients_delta_flag" );
    if( !alfSliceParam.coeffDeltaFlag )
    {
      if( alfSliceParam.numLumaFilters > 1 )
      {
        WRITE_FLAG( alfSliceParam.coeffDeltaPredModeFlag, "coeff_delta_pred_mode_flag" );
      }
    }
  }

  static int bitsCoeffScan[EncAdaptiveLoopFilter::m_MAX_SCAN_VAL][EncAdaptiveLoopFilter::m_MAX_EXP_GOLOMB];
  memset( bitsCoeffScan, 0, sizeof( bitsCoeffScan ) );
1815
  AlfFilterShape alfShape( isChroma ? 5 : 7 );
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  const int maxGolombIdx = AdaptiveLoopFilter::getMaxGolombIdx( alfShape.filterType );
  const short* coeff = isChroma ? alfSliceParam.chromaCoeff : alfSliceParam.lumaCoeff;
  const int numFilters = isChroma ? 1 : alfSliceParam.numLumaFilters;

  // vlc for all
  for( int ind = 0; ind < numFilters; ++ind )
  {
    if( isChroma || !alfSliceParam.coeffDeltaFlag || alfSliceParam.filterCoeffFlag[ind] )
    {
      for( int i = 0; i < alfShape.numCoeff - 1; i++ )
      {
        int coeffVal = abs( coeff[ind * MAX_NUM_ALF_LUMA_COEFF + i] );

        for( int k = 1; k < 15; k++ )
        {
          bitsCoeffScan[alfShape.golombIdx[i]][k] += EncAdaptiveLoopFilter::lengthGolomb( coeffVal, k );
        }
      }
    }
  }

  static int kMinTab[MAX_NUM_ALF_COEFF];
  int kMin = EncAdaptiveLoopFilter::getGolombKMin( alfShape, numFilters, kMinTab, bitsCoeffScan );

  // Golomb parameters
  WRITE_UVLC( kMin - 1, "min_golomb_order" );

  for( int idx = 0; idx < maxGolombIdx; idx++ )
  {
    bool golombOrderIncreaseFlag = ( kMinTab[idx] != kMin ) ? true : false;
    CHECK( !( kMinTab[idx] <= kMin + 1 ), "ALF Golomb parameter not consistent" );
    WRITE_FLAG( golombOrderIncreaseFlag, "golomb_order_increase_flag" );
    kMin = kMinTab[idx];
  }

  if( !isChroma )
  {
    if( alfSliceParam.coeffDeltaFlag )
    {
      for( int ind = 0; ind < numFilters; ++ind )
      {
        WRITE_FLAG( alfSliceParam.filterCoeffFlag[ind], "filter_coefficient_flag[i]" );
      }
    }
  }

  // Filter coefficients
  for( int ind = 0; ind < numFilters; ++ind )
  {
    if( !isChroma && !alfSliceParam.filterCoeffFlag[ind] && alfSliceParam.coeffDeltaFlag )
    {
      continue;
    }

    for( int i = 0; i < alfShape.numCoeff - 1; i++ )
    {
      alfGolombEncode( coeff[ind* MAX_NUM_ALF_LUMA_COEFF + i], kMinTab[alfShape.golombIdx[i]] );  // alf_coeff_chroma[i], alf_coeff_luma_delta[i][j]
    }
  }
}

void HLSWriter::xWriteTruncBinCode( uint32_t uiSymbol, const int uiMaxSymbol )
{
  int uiThresh;
  if( uiMaxSymbol > 256 )
  {
    int uiThreshVal = 1 << 8;
    uiThresh = 8;
    while( uiThreshVal <= uiMaxSymbol )
    {
      uiThresh++;
      uiThreshVal <<= 1;
    }
    uiThresh--;
  }
  else
  {
    uiThresh = g_tbMax[uiMaxSymbol];
  }

  int uiVal = 1 << uiThresh;
  assert( uiVal <= uiMaxSymbol );
  assert( ( uiVal << 1 ) > uiMaxSymbol );
  assert( uiSymbol < uiMaxSymbol );
  int b = uiMaxSymbol - uiVal;
  assert( b < uiVal );
  if( uiSymbol < uiVal - b )
  {
    xWriteCode( uiSymbol, uiThresh );
  }
  else
  {
    uiSymbol += uiVal - b;
    assert( uiSymbol < ( uiVal << 1 ) );
    assert( ( uiSymbol >> 1 ) >= uiVal - b );
    xWriteCode( uiSymbol, uiThresh + 1 );
  }
}

void HLSWriter::truncatedUnaryEqProb( int symbol, const int maxSymbol )
{
  if( maxSymbol == 0 )
  {
    return;
  }

  bool codeLast = ( maxSymbol > symbol );
  int bins = 0;
  int numBins = 0;

  while( symbol-- )
  {
    bins <<= 1;
    bins++;
    numBins++;
  }
  if( codeLast )
  {
    bins <<= 1;
    numBins++;
  }
  CHECK( !( numBins <= 32 ), "Unspecified error" );
  xWriteCode( bins, numBins );
}

//! \}