public void ProcessAspectRatioVideoUsabilityInformation(NalUnitBitstreamNavigator nav, bool aspect_ratio_info_present_flag, byte aspect_ratio_idc, uint sar_width, uint sar_height)
{
const byte SAR_EXTENDED = 255;
// NOTE: this implementation currently will only CHANGE an existing aspect ratio - not add one if it doesn't exist
if (aspect_ratio_info_present_flag)
{
if (aspect_ratio_idc == SAR_EXTENDED)
{
nav.RewindBits(32);
nav.SetBits(NewSarWidth, 16); //sar_width u(16)
nav.SetBits(NewSarHeight, 16); //sar_height u(16)
}
}
}
private void ReadAspectRatioVideoUsabilityInformation(NalUnitBitstreamNavigator nav)
{
const byte EXTENDED_SAR = 255;
byte aspect_ratio_idc = 0;
uint sar_width = 0;
uint sar_height = 0;
bool aspect_ratio_info_present_flag = nav.ReadBit(); //aspect_ratio_info_present_flag u(1)
if (aspect_ratio_info_present_flag)
{
aspect_ratio_idc = nav.ReadBitsAsByte(8); //aspect_ratio_idc u(8)
if (aspect_ratio_idc == EXTENDED_SAR)
{
sar_width = nav.ReadBitsAsUInt32(16); //sar_width u(16)
sar_height = nav.ReadBitsAsUInt32(16); //sar_height u(16)
}
}
_eventHandler?.ProcessAspectRatioVideoUsabilityInformation(nav, aspect_ratio_info_present_flag, aspect_ratio_idc, sar_width, sar_height);
}
/// <summary>
/// Process the scaling list data.
/// </summary>
/// <remarks>
/// Reference: 7.3.4 Scaling list data syntax
/// </remarks>
private void ProcessScalingListData(NalUnitBitstreamNavigator nav)
{
bool[,] scaling_list_pred_mode_flag = new bool[4, 6];
int[,] scaling_list_dc_coef_minus8 = new int[4, 6];
for (int sizeId = 0; sizeId < 4; sizeId++)
{
for (int matrixId = 0; matrixId < 6; matrixId += (sizeId == 3) ? 3 : 1)
{
scaling_list_pred_mode_flag[sizeId, matrixId] = nav.ReadBit(); //scaling_list_pred_mode_flag[sizeId][matrixId] u(1)
if (!scaling_list_pred_mode_flag[sizeId, matrixId])
{
nav.ReadNonNegativeExponentialGolombAsUInt32(); //scaling_list_pred_matrix_id_delta[sizeId][matrixId] ue(v)
}
else
{
int nextCoef = 8;
int coefNum = Math.Min(64, (1 << (4 + (sizeId << 1))));
if (sizeId > 1)
{
int sizeIdMinux2 = sizeId - 2;
scaling_list_dc_coef_minus8[sizeIdMinux2, matrixId] = nav.ReadSignedExponentialGolombAsInt32(); //scaling_list_dc_coef_minus8[sizeId − 2][matrixId] se(v)
nextCoef = scaling_list_dc_coef_minus8[sizeIdMinux2, matrixId] + 8;
}
for (int i = 0; i < coefNum; i++)
{
int scaling_list_delta_coef = nav.ReadSignedExponentialGolombAsInt32(); //scaling_list_delta_coef se(v)
nextCoef = (nextCoef + scaling_list_delta_coef + 256) % 256;
// ScalingList[sizeId][matrixId][i] = nextCoef;
}
}
}
}
}
/// <summary>
/// Process the Video Usability Information.
/// </summary>
/// <param name="nav">The NAL Unit bitstream navigator.</param>
/// <remarks>
/// Reference: Annex E - Video usability information (p370)
/// </remarks>
private void ProcessVideoUsabilityInformationParameters(NalUnitBitstreamNavigator nav)
{
ReadAspectRatioVideoUsabilityInformation(nav);
bool overscan_info_present_flag = nav.ReadBit(); //overscan_info_present_flag u(1)
if (overscan_info_present_flag)
{
nav.SkipBit(); //overscan_appropriate_flag u(1)
}
// **********************************************
// NOTE: Parsing has only implemented up to here...
// **********************************************
//bool video_signal_type_present_flag = nav.ReadBit(); //video_signal_type_present_flag u(1)
//if (video_signal_type_present_flag)
//{
// //video_format u(3)
// //video_full_range_flag u(1)
// bool colour_description_present_flag = nav.ReadBit(); //colour_description_present_flag u(1)
// if (colour_description_present_flag)
// {
// //colour_primaries u(8)
// //transfer_characteristics u(8)
// //matrix_coeffs u(8)
// }
//}
//bool chroma_loc_info_present_flag = nav.ReadBit(); //chroma_loc_info_present_flag u(1)
//if (chroma_loc_info_present_flag)
//{
// //chroma_sample_loc_type_top_field ue(v)
// //chroma_sample_loc_type_bottom_field ue(v)
//}
////neutral_chroma_indication_flag u(1)
////field_seq_flag u(1)
////frame_field_info_present_flag u(1)
//bool default_display_window_flag = nav.ReadBit(); //default_display_window_flag u(1)
//if (default_display_window_flag)
//{
// //def_disp_win_left_offset ue(v)
// //def_disp_win_right_offset ue(v)
// //def_disp_win_top_offset ue(v)
// //def_disp_win_bottom_offset ue(v)
//}
//bool vui_timing_info_present_flag = nav.ReadBit(); //vui_timing_info_present_flag u(1)
//if (vui_timing_info_present_flag)
//{
// //vui_num_units_in_tick u(32)
// //vui_time_scale u(32)
// bool vui_poc_proportional_to_timing_flag = nav.ReadBit(); //vui_poc_proportional_to_timing_flag u(1)
// if (vui_poc_proportional_to_timing_flag)
// {
// //vui_num_ticks_poc_diff_one_minus1 ue(v)
// }
// bool vui_hrd_parameters_present_flag = nav.ReadBit(); //vui_hrd_parameters_present_flag u(1)
// if (vui_hrd_parameters_present_flag)
// {
// //hrd_parameters(1, sps_max_sub_layers_minus1)
// }
//}
//bool bitstream_restriction_flag = nav.ReadBit(); //bitstream_restriction_flag u(1)
//if (bitstream_restriction_flag)
//{
// //tiles_fixed_structure_flag u(1)
// //motion_vectors_over_pic_boundaries_flag u(1)
// //restricted_ref_pic_lists_flag u(1)
// //min_spatial_segmentation_idc ue(v)
// //max_bytes_per_pic_denom ue(v)
// //max_bits_per_min_cu_denom ue(v)
// //log2_max_mv_length_horizontal ue(v)
// //log2_max_mv_length_vertical ue(v)
//}
}
/// <summary>
/// Process the short term reference picture sets.
/// </summary>
/// <remarks>
/// Reference:
/// 7.3.7 Short-term reference picture set syntax
/// 7.4.8 Short-term reference picture set semantics
/// </remarks>
private ShortTermRefPicSet ProcessShortTermRefPicSets(NalUnitBitstreamNavigator nav, SequenceParameterSet sps, uint stRpsIdx)
{
var result = new ShortTermRefPicSet();
if (stRpsIdx != 0)
{
result.inter_ref_pic_set_prediction_flag = nav.ReadBit(); //inter_ref_pic_set_prediction_flag u(1)
}
if (result.inter_ref_pic_set_prediction_flag)
{
if (stRpsIdx == sps.num_short_term_ref_pic_sets)
{
result.delta_idx_minus1 = nav.ReadNonNegativeExponentialGolombAsUInt32(); //delta_idx_minus1 ue(v)
}
result.delta_rps_sign = nav.ReadBit() ? (byte)1 : (byte)0; //delta_rps_sign u(1)
result.abs_delta_rps_minus1 = nav.ReadNonNegativeExponentialGolombAsUInt32(); //abs_delta_rps_minus1 ue(v)
// long deltaRps = (1 - 2 * delta_rps_sign) * (abs_delta_rps_minus1 + 1);
uint numDeltaPocs = CalculateNumDeltaPictureOrderCounts(sps.ShortTermRefPicSets, stRpsIdx, result);
for (int j = 0; j <= numDeltaPocs; j++)
{
result.used_by_curr_pic_flag.Add(nav.ReadBit()); //used_by_curr_pic_flag[ j ] u(1)
if (!result.used_by_curr_pic_flag[j])
{
result.use_delta_flag.Add(nav.ReadBit()); //use_delta_flag[ j ] u(1)
}
}
}
else
{
result.num_negative_pics = nav.ReadNonNegativeExponentialGolombAsUInt32(); //num_negative_pics ue(v)
result.num_positive_pics = nav.ReadNonNegativeExponentialGolombAsUInt32(); //num_positive_pics ue(v)
if (result.num_negative_pics > sps.sps_max_dec_pic_buffering_minus1[sps.sps_max_sub_layers_minus1])
{
System.Console.WriteLine("ShortTermRefPicSet.num_negative_pics > sps_max_dec_pic_buffering_minus1");
return(result);
}
if (result.num_positive_pics > sps.sps_max_dec_pic_buffering_minus1[sps.sps_max_sub_layers_minus1])
{
System.Console.WriteLine("ShortTermRefPicSet.num_positive_pics > sps_max_dec_pic_buffering_minus1");
return(result);
}
for (int i = 0; i < result.num_negative_pics; i++)
{
result.delta_poc_s0_minus1.Add(nav.ReadNonNegativeExponentialGolombAsUInt32()); //delta_poc_s0_minus1[ i ] ue(v)
result.used_by_curr_pic_s0_flag.Add(nav.ReadBit()); //used_by_curr_pic_s0_flag[ i ] u(1)
}
for (int i = 0; i < result.num_positive_pics; i++)
{
result.delta_poc_s1_minus1.Add(nav.ReadNonNegativeExponentialGolombAsUInt32()); //delta_poc_s1_minus1[ i ] ue(v)
result.used_by_curr_pic_s1_flag.Add(nav.ReadBit()); //used_by_curr_pic_s1_flag[ i ] u(1)
}
}
return(result);
}
/// <summary>
/// Process a Sequence Parameter Set NAL Unit.
/// </summary>
/// <remarks>
/// Reference 7.3.2.2 Sequence parameter set RBSP syntax - seq_parameter_set_rbsp()
/// </remarks>
private byte[] ProcessSequenceParameterSetNalUnit(byte[] nalUnitBytes)
{
var sps = new SequenceParameterSet();
var nav = new NalUnitBitstreamNavigator(nalUnitBytes);
nav.SkipBits(16); // Skip the 2 byte Nal Unit header
nav.SkipBits(4); // sps_video_parameter_set_id u(4)
sps.sps_max_sub_layers_minus1 = nav.ReadBitsAsByte(3); // sps_max_sub_layers_minus1 u(3)
nav.SkipBit(); // sps_temporal_id_nesting_flag u(1)
ProcessProfileTierLevel(nav, true, sps.sps_max_sub_layers_minus1); //profile_tier_level( 1, sps_max_sub_layers_minus1 )
nav.ReadNonNegativeExponentialGolombAsUInt32(); //sps_seq_parameter_set_id ue(v)
uint chroma_format_idc = nav.ReadNonNegativeExponentialGolombAsUInt32(); //chroma_format_idc ue(v)
if (chroma_format_idc == 3)
{
nav.SkipBit(); // separate_colour_plane_flag u(1)
}
nav.ReadNonNegativeExponentialGolombAsUInt32(); //pic_width_in_luma_samples ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //pic_height_in_luma_samples ue(v)
bool conformance_window_flag = nav.ReadBit(); //conformance_window_flag u(1)
if (conformance_window_flag)
{
nav.ReadNonNegativeExponentialGolombAsUInt32(); //conf_win_left_offset ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //conf_win_right_offset ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //conf_win_top_offset ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //conf_win_bottom_offset ue(v)
}
nav.ReadNonNegativeExponentialGolombAsUInt32(); //bit_depth_luma_minus8 ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //bit_depth_chroma_minus8 ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //log2_max_pic_order_cnt_lsb_minus4 ue(v)
sps.sps_max_dec_pic_buffering_minus1 = new uint[sps.sps_max_sub_layers_minus1 + 1];
bool sps_sub_layer_ordering_info_present_flag = nav.ReadBit(); //sps_sub_layer_ordering_info_present_flag u(1)
for (int i = (sps_sub_layer_ordering_info_present_flag ? 0 : sps.sps_max_sub_layers_minus1); i <= sps.sps_max_sub_layers_minus1; i++)
{
sps.sps_max_dec_pic_buffering_minus1[i] = nav.ReadNonNegativeExponentialGolombAsUInt32(); //sps_max_dec_pic_buffering_minus1[i] ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //sps_max_num_reorder_pics[i] ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //sps_max_latency_increase_plus1[i] ue(v)
}
nav.ReadNonNegativeExponentialGolombAsUInt32(); //log2_min_luma_coding_block_size_minus3 ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //log2_diff_max_min_luma_coding_block_size ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //log2_min_luma_transform_block_size_minus2 ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //log2_diff_max_min_luma_transform_block_size ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //max_transform_hierarchy_depth_inter ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //max_transform_hierarchy_depth_intra ue(v)
bool scaling_list_enabled_flag = nav.ReadBit(); //scaling_list_enabled_flag u(1)
if (scaling_list_enabled_flag)
{
bool sps_scaling_list_data_present_flag = nav.ReadBit(); //sps_scaling_list_data_present_flag u(1)
if (sps_scaling_list_data_present_flag)
{
ProcessScalingListData(nav); //scaling_list_data()
}
}
nav.SkipBit(); //amp_enabled_flag u(1)
nav.SkipBit(); //sample_adaptive_offset_enabled_flag u(1)
bool pcm_enabled_flag = nav.ReadBit(); //pcm_enabled_flag u(1)
if (pcm_enabled_flag)
{
nav.SkipBits(4); //pcm_sample_bit_depth_luma_minus1 u(4)
nav.SkipBits(4); //pcm_sample_bit_depth_chroma_minus1 u(4)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //log2_min_pcm_luma_coding_block_size_minus3 ue(v)
nav.ReadNonNegativeExponentialGolombAsUInt32(); //log2_diff_max_min_pcm_luma_coding_block_size ue(v)
nav.SkipBit(); //pcm_loop_filter_disabled_flag u(1)
}
sps.num_short_term_ref_pic_sets = nav.ReadNonNegativeExponentialGolombAsUInt32(); //num_short_term_ref_pic_sets ue(v)
for (uint i = 0; i < sps.num_short_term_ref_pic_sets; i++)
{
sps.ShortTermRefPicSets.Add(ProcessShortTermRefPicSets(nav, sps, i)); //st_ref_pic_set( i )
}
bool long_term_ref_pics_present_flag = nav.ReadBit(); //long_term_ref_pics_present_flag u(1)
if (long_term_ref_pics_present_flag)
{
uint num_long_term_ref_pics_sps = nav.ReadNonNegativeExponentialGolombAsUInt32(); //num_long_term_ref_pics_sps ue(v)
for (int i = 0; i < num_long_term_ref_pics_sps; i++)
{
nav.ReadNonNegativeExponentialGolombAsUInt32(); //lt_ref_pic_poc_lsb_sps[i] u(v)
nav.SkipBit(); //used_by_curr_pic_lt_sps_flag[i] u(1)
}
}
nav.SkipBit(); //sps_temporal_mvp_enabled_flag u(1)
nav.SkipBit(); //strong_intra_smoothing_enabled_flag u(1)
bool vui_parameters_present_flag = nav.ReadBit(); //vui_parameters_present_flag u(1)
if (vui_parameters_present_flag)
{
ProcessVideoUsabilityInformationParameters(nav); //vui_parameters()
}
// **********************************************
// NOTE: Parsing has only implemented up to here... There are still more extensions...
// **********************************************
//sps_extension_present_flag u(1)
//if( sps_extension_present_flag ) {
// sps_range_extension_flag u(1)
// sps_multilayer_extension_flag u(1)
// sps_3d_extension_flag u(1)
// sps_scc_extension_flag u(1)
// sps_extension_4bits u(4)
//}
//if ( sps_range_extension_flag )
// sps_range_extension( )
//if( sps_multilayer_extension_flag )
// sps_multilayer_extension( ) /* specified in Annex F *
//if (sps_3d_extension_flag)
// sps_3d_extension() /* specified in Annex I *
//if (sps_scc_extension_flag)
// sps_scc_extension()
//if (sps_extension_4bits)
// while (more_rbsp_data())
// sps_extension_data_flag u(1)
return(nalUnitBytes);
}
private void ProcessProfileTierLevel(NalUnitBitstreamNavigator nav, bool isProfilePresent, byte maxNumSubLayersMinus1)
{
/////////////////
// Profile
/////////////////
if (isProfilePresent)
{
nav.SkipBits(2); //general_profile_space u(2)
nav.SkipBit(); //general_tier_flag u(1)
byte general_profile_idc = nav.ReadBitsAsByte(5); //general_profile_idc u(5)
bool[] general_profile_compatibility_flag = new bool[32];
for (int j = 0; j < 32; j++)
{
general_profile_compatibility_flag[j] = nav.ReadBit(); //general_profile_compatibility_flag[ j ] u(1)
}
nav.SkipBit(); //general_progressive_source_flag u(1)
nav.SkipBit(); //general_interlaced_source_flag u(1)
nav.SkipBit(); //general_non_packed_constraint_flag u(1)
nav.SkipBit(); //general_frame_only_constraint_flag u(1)
if (general_profile_idc == 4 || general_profile_compatibility_flag[4] ||
general_profile_idc == 5 || general_profile_compatibility_flag[5] ||
general_profile_idc == 6 || general_profile_compatibility_flag[6] ||
general_profile_idc == 7 || general_profile_compatibility_flag[7] ||
general_profile_idc == 8 || general_profile_compatibility_flag[8] ||
general_profile_idc == 9 || general_profile_compatibility_flag[9] ||
general_profile_idc == 10 || general_profile_compatibility_flag[10])
{
/* The number of bits in this syntax structure is not affected by this condition */
nav.SkipBit(); //general_max_12bit_constraint_flag u(1)
nav.SkipBit(); //general_max_10bit_constraint_flag u(1)
nav.SkipBit(); //general_max_8bit_constraint_flag u(1)
nav.SkipBit(); //general_max_422chroma_constraint_flag u(1)
nav.SkipBit(); //general_max_420chroma_constraint_flag u(1)
nav.SkipBit(); //general_max_monochrome_constraint_flag u(1)
nav.SkipBit(); //general_intra_constraint_flag u(1)
nav.SkipBit(); //general_one_picture_only_constraint_flag u(1)
nav.SkipBit(); //general_lower_bit_rate_constraint_flag u(1)
if (general_profile_idc == 5 || general_profile_compatibility_flag[5] ||
general_profile_idc == 9 || general_profile_compatibility_flag[9] ||
general_profile_idc == 10 || general_profile_compatibility_flag[10])
{
nav.SkipBit(); //general_max_14bit_constraint_flag u(1)
nav.SkipBits(33); //general_reserved_zero_33bits u(33)
}
else
{
nav.SkipBits(34); //general_reserved_zero_34bits u(34)
}
}
else
{
nav.SkipBits(43); //general_reserved_zero_43bits u(43)
}
if ((general_profile_idc >= 1 && general_profile_idc <= 5) ||
general_profile_idc == 9 ||
general_profile_compatibility_flag[1] || general_profile_compatibility_flag[2] ||
general_profile_compatibility_flag[3] || general_profile_compatibility_flag[4] ||
general_profile_compatibility_flag[5] || general_profile_compatibility_flag[9])
{
/* The number of bits in this syntax structure is not affected by this condition */
nav.SkipBit(); //general_inbld_flag u(1)
}
else
{
nav.SkipBit(); //general_reserved_zero_bit u(1)
}
}
///////////////////////
// Level
///////////////////////
nav.SkipBits(8); //general_level_idc u(8)
bool[] sub_layer_profile_present_flag = new bool[maxNumSubLayersMinus1];
bool[] sub_layer_level_present_flag = new bool[maxNumSubLayersMinus1];
for (int i = 0; i < maxNumSubLayersMinus1; i++)
{
sub_layer_profile_present_flag[i] = nav.ReadBit(); //sub_layer_profile_present_flag[i] u(1)
sub_layer_level_present_flag[i] = nav.ReadBit(); //sub_layer_level_present_flag[i] u(1)
}
if (maxNumSubLayersMinus1 > 0)
{
for (int i = maxNumSubLayersMinus1; i < 8; i++)
{
nav.SkipBits(2); // reserved_zero_2bits[i] u(2)
}
}
bool[,] sub_layer_profile_compatibility_flag = new bool[maxNumSubLayersMinus1, 32];
byte[] sub_layer_profile_idc = new byte[maxNumSubLayersMinus1];
for (int i = 0; i < maxNumSubLayersMinus1; i++)
{
if (sub_layer_profile_present_flag[i])
{
nav.SkipBits(2); //sub_layer_profile_space[i] u(2)
nav.SkipBit(); //sub_layer_tier_flag[i] u(1)
sub_layer_profile_idc[i] = nav.ReadBitsAsByte(5); //sub_layer_profile_idc[i] u(5)
for (int j = 0; j < 32; j++)
{
sub_layer_profile_compatibility_flag[i, j] = nav.ReadBit(); //sub_layer_profile_compatibility_flag[i][j] u(1)
}
nav.SkipBit(); //sub_layer_progressive_source_flag[i] u(1)
nav.SkipBit(); //sub_layer_interlaced_source_flag[i] u(1)
nav.SkipBit(); //sub_layer_non_packed_constraint_flag[i] u(1)
nav.SkipBit(); //sub_layer_frame_only_constraint_flag[i] u(1)
if (sub_layer_profile_idc[i] == 4 || sub_layer_profile_compatibility_flag[i, 4] ||
sub_layer_profile_idc[i] == 5 || sub_layer_profile_compatibility_flag[i, 5] ||
sub_layer_profile_idc[i] == 6 || sub_layer_profile_compatibility_flag[i, 6] ||
sub_layer_profile_idc[i] == 7 || sub_layer_profile_compatibility_flag[i, 7] ||
sub_layer_profile_idc[i] == 8 || sub_layer_profile_compatibility_flag[i, 8] ||
sub_layer_profile_idc[i] == 9 || sub_layer_profile_compatibility_flag[i, 9] ||
sub_layer_profile_idc[i] == 10 || sub_layer_profile_compatibility_flag[i, 10])
{
/* The number of bits in this syntax structure is not affected by this condition */
nav.SkipBit(); //sub_layer_max_12bit_constraint_flag[i] u(1)
nav.SkipBit(); //sub_layer_max_10bit_constraint_flag[i] u(1)
nav.SkipBit(); //sub_layer_max_8bit_constraint_flag[i] u(1)
nav.SkipBit(); //sub_layer_max_422chroma_constraint_flag[i] u(1)
nav.SkipBit(); //sub_layer_max_420chroma_constraint_flag[i] u(1)
nav.SkipBit(); //sub_layer_max_monochrome_constraint_flag[i] u(1)
nav.SkipBit(); //sub_layer_intra_constraint_flag[i] u(1)
nav.SkipBit(); //sub_layer_one_picture_only_constraint_flag[i] u(1)
nav.SkipBit(); //sub_layer_lower_bit_rate_constraint_flag[i] u(1)
if (sub_layer_profile_idc[i] == 5 || sub_layer_profile_compatibility_flag[i, 5])
{
nav.SkipBit(); //sub_layer_max_14bit_constraint_flag u(1)
nav.SkipBits(33); //sub_layer_reserved_zero_33bits[i] u(33)
}
else
{
nav.SkipBits(34); //sub_layer_reserved_zero_34bits[i] u(34)
}
}
else
{
nav.SkipBits(43); //sub_layer_reserved_zero_43bits[i] u(43)
}
if ((sub_layer_profile_idc[i] >= 1 && sub_layer_profile_idc[i] <= 5) ||
sub_layer_profile_idc[i] == 9 ||
sub_layer_profile_compatibility_flag[i, 1] ||
sub_layer_profile_compatibility_flag[i, 2] ||
sub_layer_profile_compatibility_flag[i, 3] ||
sub_layer_profile_compatibility_flag[i, 4] ||
sub_layer_profile_compatibility_flag[i, 5] ||
sub_layer_profile_compatibility_flag[i, 9])
{
/* The number of bits in this syntax structure is not affected by this condition */
nav.SkipBit(); // sub_layer_inbld_flag[i] u(1)
}
else
{
nav.SkipBit(); //sub_layer_reserved_zero_bit[i] u(1)
}
}
if (sub_layer_level_present_flag[i])
{
nav.SkipBits(8); // sub_layer_level_idc[i] u(8)
}
}
}
