Method parse

YUViewLib/src/parser/HEVC/scaling_list_data.cpp:42–75

using namespace reader;

void scaling_list_data::parse(SubByteReaderLogging &reader)
{
  SubByteReaderLoggingSubLevel subLevel(reader, "scaling_list_data()");
  
  for(unsigned sizeId=0; sizeId<4; sizeId++)
  {
    for(unsigned matrixId=0; matrixId<6u; matrixId += (sizeId == 3) ? 3 : 1)
    { 

      this->scaling_list_pred_mode_flag[sizeId][matrixId] = reader.readFlag(formatArray("scaling_list_pred_mode_flag", sizeId, matrixId));
      if (!this->scaling_list_pred_mode_flag[sizeId][matrixId])
      {
        this->scaling_list_pred_matrix_id_delta[sizeId][matrixId] = reader.readUEV(formatArray("scaling_list_pred_matrix_id_delta", sizeId, matrixId));
      }
      else
      {
        int nextCoef = 8;
        auto coefNum = std::min(64u, (1u << (4u + (sizeId << 1u))));
        if(sizeId > 1)
        {
          this->scaling_list_dc_coef_minus8[sizeId-2][matrixId] = reader.readSEV(formatArray("scaling_list_dc_coef_minus8", sizeId-2, matrixId));
          nextCoef = this->scaling_list_dc_coef_minus8[sizeId-2][matrixId] + 8;
        }
        for (unsigned i=0; i<coefNum; i++)
        {
          auto scaling_list_delta_coef = reader.readSEV("scaling_list_delta_coef");
          nextCoef = (nextCoef + scaling_list_delta_coef + 256) % 256;
          auto scalingListVal = nextCoef;
          reader.logCalculatedValue(formatArray("scalingListVal", sizeId, matrixId, i), scalingListVal);
        }
      }
    }
  }
}

} // namespace parser::hevc