id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1418	Mismatch between spec and VTM on signalling of sn_layer_id	wangyang.cs		"1. There is a mismatch between spec and VTM on signalling of sn_layer_id.

'''In VTM-10.0, sn_layer_id is parsed with index from 0 to m_snNumLayersMinus1 inclusive.'''
In {{{void SEIReader::xParseSEIScalableNesting()}}}
{{{
  if (sei.m_snOlsFlag)
  {
    ...
  }
  else
  {
    sei_read_flag(decodedMessageOutputStream, symbol, ""sn_all_layers_flag""); sei.m_snAllLayersFlag = symbol;
    if (!sei.m_snAllLayersFlag)
    {
      sei_read_uvlc(decodedMessageOutputStream, symbol, ""sn_num_layers_minus1""); sei.m_snNumLayersMinus1 = symbol;
      for (uint32_t i = 0; i <= sei.m_snNumLayersMinus1; i++)
      {
        sei_read_code(decodedMessageOutputStream, 6, symbol, ""sn_layer_id[i]""); sei.m_snLayerId[i] = symbol;
      }
    }
  }
}}}

sn_layr_id is parsed with index from 0 to m_snNumLayersMinus1 inclusive.

'''However, in JVET-T2001-v1, sn_layer_id is signalled with index from 1 to m_snNumLayersMinus1 inclusive.'''
D.6.1	Scalable nesting SEI message syntax
scalable_nesting( payloadSize ) {
	sn_ols_flag
	sn_subpic_flag
	if( sn_ols_flag ) {
		sn_num_olss_minus1
		for( i = 0; i  <=  sn_num_olss_minus1; i++ )
			sn_ols_idx_delta_minus1[ i ]
	} else {
		sn_all_layers_flag
		if( !sn_all_layers_flag ) {
			sn_num_layers_minus1
			for( i = [[span(style=color: #FF0000,1)]]; i  <=  sn_num_layers_minus1; i++ )
				sn_layer_id[ i ]
		}
	}


2. There is a typo in '''void SEIReader::parseSEImessage()'''
{
const SEIMessages pictureTiming = getSeisByType(seiListInCurNalu, SEI::PICTURE_TIMING);
CHECK(hrd.getGeneralHrdParameters().getGeneralSamePicTimingInAllOlsFlag() && pictureTiming.size() > 0 && pictureTiming.size() != pictureTiming.size(), ...
}

should be corrected as follows:

{
const SEIMessages pictureTiming = getSeisByType(seiListInCurNalu, SEI::PICTURE_TIMING);
CHECK(hrd.getGeneralHrdParameters().getGeneralSamePicTimingInAllOlsFlag() && pictureTiming.size() > 0 && pictureTiming.size() != [[span(style=color: #FF0000, seiListInCurNalu)]].size(),...
}
"	defect	closed	minor	VTM-11.0	VTM	VTM-10.2	fixed		ksuehring bbross XiangLi fbossen jvet@… jvet@…