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9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.7.3.6.1 Processing | For advanced joint object decoding num_dmx_signals input objects are present. Their elements are addressed as follows: Input signals xch(ts,sb) ∈ QinAJOC,ch for ch = 0,...,num_dmx_signals - 1 The num_umx_signals output objects are addressed as: Output signals zo(ts,sb) ∈ QoutAJOC,o for o = 0,...,num_umx_signals - 1 ETS... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.7.3.6.2 Decorrelation input matrix | The input signals for the parallel decorrelators are: Decorrelator input signals ude(ts,sb) ∈ Qdecorr_inAJOC,de for de = 0, ..., ajoc_num_decorr - 1 The decorrelation input signals ude can be calculated from the input signals xch using decorrelation input matrices D(ts,sb) with ajoc_num_decorr rows and num_dmx_signals ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.8 Dialogue Enhancement (DE) for immersive audio | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.8.1 Introduction | This Dialogue Enhancement (DE) tool specification extends the specification of the DE tool in ETSI TS 103 190-1 [1], clause 5.7.8 to support DE for immersive object audio content and DE for core decoding of A-JCC or A-CPL coded immersive channel audio content. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.8.2 Processing | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.8.2.1 DE for core decoding of A-JCC coded 9.X.4 content | NOTE 1: This tool is an extension to the DE tool specified in ETSI TS 103 190-1 [1], clause 5.7.8. A-JCC coded 9.X.4 content is content coded in an immersive_channel_element where immersive_codec_mode is set to ASPX_AJCC and where b_5fronts = 1. This clause specifies the DE processing for core decoding of A-JCC coded 9... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.8.2.2 DE for core decoding of parametric A-CPL coded 9.X.4 content | NOTE: This tool is an extension to the DE tool specified in ETSI TS 103 190-1 [1], clause 5.7.8. Parametric A-CPL coded 9.X.4 content is content coded in an immersive_channel_element where immersive_codec_mode is set to ASPX_ACPL_2 and where b_5fronts is true. The input signals for the DE processing are a subset of the... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.8.2.3 DE for full decoding of A-JOC coded content | NOTE: This tool is an extension to the DE tool specified in ETSI TS 103 190-1 [1], clause 5.7.8. A-JOC coded content is content coded in an audio_data_ajoc element. If DE is enabled for full decoding of A-JOC coded content the DE processing shall be done by a modification of the A-JOC parameters. The function ajoc_de_p... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.8.2.4 DE for core decoding of A-JOC coded content | NOTE: This tool is an extension to the DE tool specified in ETSI TS 103 190-1 [1], clause 5.7.8. When decoding A-JOC content in core decoding mode DE shall be applied according to the matrix equation: ,- , % = &" , % × &. , % × ,- , % + ,- , % ETSI ETSI TS 103 190-2 V1.1.1 (2015-09) 83 where xch(ts,sb... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.8.2.5 DE for non A-JOC coded object audio content | NOTE: This tool is an extension to the DE tool specified in ETSI TS 103 190-1 [1], clause 5.7.8. Non A-JOC coded object audio content is content coded in audio_data_objs. If DE is enabled for decoding of a non A-JOC coded object audio content and the processed substream is a dialogue substream, the decoder shall apply ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.9 Object Audio Metadata Timing | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.9.1 Introduction | The AC-4 bitstream supports multiple updates for object properties per codec frame, where each update is contained in one obj_info_block (called block update). The OAMD timing data specifies how updates of the object properties are synchronized to the PCM audio samples of the object essence. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.9.2 Synchronization of object properties | The decoder shall synchronize the object properties, contained in multiple block updates, to the PCM audio samples. The decoder may split up the object audio essence into subblocks of PCM audio samples. These subblocks of samples are associated with properties of the corresponding block update and are consecutively out... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10 Rendering | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.1 Introduction | This topic specifies several different algorithms for rendering audio tracks into output channels corresponding to a chosen speaker layout. Two different renderers are defined: • a channel based renderer, downmixing or up-mapping input channels to output channels • an ISF renderer, rendering the intermediate spatial fo... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.2 Channel Audio Renderer | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.2.1 Introduction | This clause describes how decoded audio substreams are rendered to the output channel configuration. The process is illustrated in Figure 10, applicable to the processing of each channel audio substream of a presentation. ETSI ETSI TS 103 190-2 V1.1.1 (2015-09) 86 Figure 10: Channel rendering process The channel render... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.2.2 General rendering matrix | The calculation of the output signals outch, where ch is the corresponding channel of the output channel configuration, from the input signals inch, where ch is the corresponding channel of the input channel mode, is described through the generalized matrix operation. ETSI ETSI TS 103 190-2 V1.1.1 (2015-09) 87 ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.2.3 Panning of a stereo or mono signal | If a channel audio substream is a dialogue substream and b_pan_dialog_present is 1, n pan_dialog value(s) are present (if the input channel configuration is mono, n=1, else n=2). If a channel audio substream is a dialogue substream and b_pan_dialog_present is 0, then the pan_dialog value(s) shall default. If n=1, the d... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.2.4 Substream downmix or upmix for full decoding | After the embedding process specified in step two in clause 5.10.2.1, the substream to be processed is present in the presentation channel mode pres_ch_mode (specified in clause 6.3.3.1.27). The decoder shall calculate the signals of the output channel configuration from the signals of the presentation channel mode, ut... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.2.5 Matrix coefficients for channel based renderer for full decoding | This clause contains one table of coefficients rout,in for the rendering matrix for each output channel configuration referenced by Table 58. The matrix coefficients depend on the input channel configuration indicated by the presentation channel mode pres_ch_mode (specified in clause 6.3.3.1.27). NOTE 1: Coefficients d... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.2.6 Substream downmix or upmix for core decoding | After the embedding process specified in step two in clause 5.10.2.1, the substream to be processed is present in the presentation channel mode for core decoding pres_ch_mode_core (specified in clause 6.3.3.1.28). The decoder shall calculate the signals of the output channel configuration from the signals of the presen... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.2.7 Matrix coefficients for channel based renderer for core decoding | This clause contains one table of coefficients rout,in for the rendering matrix for each output channel configuration referenced by Table 68. The matrix coefficients depend on the input channel configuration indicated by the presentation channel mode pres_ch_mode (specified in clause 6.3.3.1.27). NOTE 1: Coefficients d... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.3 Intermediate Spatial Format rendering | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.3.1 Introduction | Spatial audio scenes may be represented using a variety of multichannel soundfield formats, including object or traditional multichannel formats. A spatial audio scene is comprised at the source of many individual sound objects, potentially with different radiation characteristics, which may be encoded and transmitted ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.3.2 Conventions | The stacked ring ISF format is denoted by SRM.U.L.Z, using four numbers to represent the number of signals in the Middle, Upper, Lower and Zenith rings respectively - see Figure 11. EXAMPLE: SR9.5.0.1 represents a signal with 9 signals for the middle ring, 5 for the upper ring, 1 for the zenith, and none for the lower ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.3.3 Interface | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.3.3.1 Inputs | x1,...,N_in N_in ISF input tracks available from the object essence decoder N_in is the number of ISF tracks available from the object essence decoder. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.3.3.2 Outputs | y1,...,N_out N_out speaker feeds output from the ISF tool N_out is the number of speakers in the output channel configuration as defined in clause 5.10.2.5. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.3.3.3 Controls | isf_config the configuration of ISF tracks as defined in clause 5.10.3.2. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.10.3.4 Processing | The ISF rendering algorithm maps ISF tracks to speaker feeds with coefficients configured by the output channel config. To process ISF tracks, the decoder shall: 1) Select the matrix M for processing from clause A.2.1. The selection is dependent on the output channel configuration. 2) Assign the outputs from the object... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 5.11 Accurate frame rate control | This tool provides accurate control over media timing when frame lengths are fractional. As specified in ETSI TS 103 190-1 [1], clause 4.3.3.2.6 AC-4 offers control over audio coding frame rate. ETSI ETSI TS 103 190-2 V1.1.1 (2015-09) 95 Frame rates in [29,97; 59,94; 119,88] frames per second result in the nominal frac... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6 Bitstream syntax | 6.1 Introduction The current specification re-uses syntactic elements specified in ETSI TS 103 190-1 [1], clause 4.2. Most syntactic elements are used unchanged as indicated in Table 72. Some syntactic elements are amended as indicated in Table 73. This clause specifies amended and newly defined syntactic elements. ETS... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2 Syntax specification | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1 AC-4 frame info | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.1 ac4_toc | Syntax No of bits ac4_toc() { bitstream_version; ........................................................................... 2 if (bitstream_version == 3) { bitstream_version += variable_bits(2); } sequence_counter; ........................................................................... 10 b_wait_frames; ............. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.2 ac4_presentation_info | Syntax No of bits ac4_presentation_info() { b_single_substream; .......................................................................... 1 if (b_single_substream != 1) { presentation_config; ....................................................................... 3 if (presentation_config == 7) { presentation_config +... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.3 ac4_presentation_v1_info | Syntax No of bits ac4_presentation_v1_info() { b_single_substream_group; .................................................................... 1 if (b_single_substream_group != 1) { presentation_config; ....................................................................... 3 if (presentation_config == 7) { presentation... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.4 frame_rate_fractions_info | Syntax No of bits frame_rate_fractions_info() { frame_rate_fraction = 1; if (frame_rate_index in [5, 6, 7, 8, 9]) { if (frame_rate_factor == 1) { b_frame_rate_fraction; ................................................................... 1 if (b_frame_rate_fraction == 1) { frame_rate_fraction = 2; } } } if (frame_rate_i... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.5 presentation_config_ext_info | Syntax No of bits presentation_config_ext_info() { n_skip_bytes; ................................................................................ 5 b_more_skip_bytes; ........................................................................... 1 if (b_more_skip_bytes) { n_skip_bytes += variable_bits(2) << 5; } if (bitst... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.6 ac4_substream_group_info | Syntax No of bits ac4_substream_group_info() { b_substreams_present; ........................................................................ 1 b_hsf_ext; ................................................................................... 1 b_single_substream; .............................................................. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.7 ac4_sgi_specifier | Syntax No of bits ac4_sgi_specifier() { if (bitstream_version == 1) { ac4_substream_group_info(); } else { group_index; ............................................................................... 3 if (group_index == 7) { group_index += variable_bits(2); } return group_index; } } |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.8 ac4_substream_info_chan | Syntax No of bits ac4_substream_info_chan(b_substreams_present) { channel_mode; ...................................................................... 1/2/4/7/8/9 if (channel_mode == 0b111111111) { channel_mode += variable_bits(2); } if (channel_mode in [0b11111100, 0b11111101, 0b111111100, 0b111111101]) { b_4_back_cha... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.9 ac4_substream_info_ajoc | Syntax No of bits ac4_substream_info_ajoc(b_substreams_present) { b_lfe; ....................................................................................... 1 b_static_dmx; ................................................................................ 1 if (b_static_dmx) { n_fullband_dmx_signals = 5; } else { n_f... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.10 bed_dyn_obj_assignment | Syntax No of bits bed_dyn_obj_assignment(n_signals) { b_dyn_objects_only; .......................................................................... 1 if (b_dyn_objects_only == 0) { b_isf; ..................................................................................... 1 if (b_isf) { isf_config; ..................... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.11 ac4_substream_info_obj | Syntax No of bits ac4_substream_info_obj(b_substreams_present) { n_objects_code; .............................................................................. 3 b_dynamic_objects; ........................................................................... 1 if (b_dynamic_objects) { b_lfe; ................................ |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.12 ac4_presentation_substream_info | Syntax No of bits ac4_presentation_substream_info() { b_alternative; ............................................................................... 1 b_pres_ndot; ................................................................................. 1 substream_index; .......................................................... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.13 oamd_substream_info | Syntax No of bits oamd_substream_info(b_substreams_present) { b_oamd_ndot; ................................................................................. 1 if (b_substreams_present == 1) { substream_index; ........................................................................... 2 if (substream_index == 3) { subst... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.1.14 ac4_hsf_ext_substream_info | Syntax No of bits ac4_hsf_ext_substream_info(b_substreams_present) { if (b_substreams_present == 1) { substream_index; ........................................................................... 2 if (substream_index == 3) { substream_index += variable_bits(2); } } } |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.2 AC-4 substreams | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.2.1 Introduction | The ac4_substream_data() element for a specific substream index depends on the type of info element which refers to this specific substream. The mapping for the info elements defined in the present document is given in Table 74, which is an extension of ETSI TS 103 190-1 [1], table 15. Table 74: ac4_substream_data mapp... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.2.2 ac4_substream | Syntax No of bits ac4_substream() { audio_size_value; ........................................................................... 15 audio_size = audio_size_value; b_more_bits; ................................................................................. 1 if (b_more_bits) { audio_size += variable_bits(7) << 15; } ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.2.3 ac4_presentation_substream | Syntax No of bits ac4_presentation_substream() { if (b_alternative) { b_name_present; ............................................................................ 1 if (b_name_present) { b_length; ................................................................................ 1 if (b_length) { name_len; ................. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.2.4 oamd_substream | Syntax No of bits oamd_substream() { b_oamd_common_data_present; .................................................................. 1 if (b_oamd_common_data_present) { oamd_common_data(); } b_oamd_timing_present; ....................................................................... 1 if (b_oamd_timing_present) { oamd... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.3 Audio data | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.3.1 audio_data_chan | Syntax No of bits audio_data_chan(channel_mode, b_iframe) { switch (channel_mode) { case mono: single_channel_element(b_iframe); break; case stereo: channel_pair_element(b_iframe); break; case 3.0: 3_0_channel_element(b_iframe); break; case 5.0: 5_X_channel_element(0, b_iframe); break; case 5.1: ETSI ETSI TS 103 190-2 ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.3.2 audio_data_objs | Syntax No of bits audio_data_objs(n_objects, b_lfe, b_iframe) { if (b_lfe) { mono_data(1); } if (n_objects != 0) { channel_mode = objs_to_channel_mode(n_objects); audio_data_chan(channel_mode, b_iframe); } } |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.3.3 objs_to_channel_mode | Syntax No of bits objs_to_channel_mode(n_objects) { switch (n_objects) { case 1: return mono; break; case 2: return stereo; break; case 3: return 3.0; break; case 5: return 5.0; break; } } ETSI ETSI TS 103 190-2 V1.1.1 (2015-09) 110 |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.3.4 audio_data_ajoc | Syntax No of bits audio_data_ajoc(n_fb_upmix_signals, b_static_dmx, n_fb_dmx_signals, b_lfe, b_iframe) { if (b_static_dmx == 1) { audio_data_chan(b_lfe ? 5.1 : 5.0, b_iframe); } else { n_dmx_signals = n_fb_dmx_signals + (b_lfe?1:0); for (s = 0; s < n_dmx_signals; s++) { is_lfe[s] = 0; } if (b_lfe) { is_lfe[0] = 1; } b_... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.3.5 ajoc_dmx_de_data | Syntax No of bits ajoc_dmx_de_data(num_dmx_signals, num_umx_signals) { b_dmx_de_cfg; ................................................................................ 1 b_keep_dmx_de_coeffs; ........................................................................ 1 if (b_dmx_de_cfg) { de_max_gain; ......................... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.4 Channel elements | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.4.1 immersive_channel_element | Syntax No of bits immersive_channel_element(b_lfe, b_5fronts, b_iframe) { immersive_codec_mode_code; ................................................................. 1/3 if (b_iframe == 1) { immers_cfg(immersive_codec_mode); } if (b_lfe == 1) { mono_data(1); } if (immersive_codec_mode == ASPX_AJCC) { companding_contro... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.4.2 immers_cfg | Syntax No of bits immers_cfg(immersive_codec_mode) { if (immersive_codec_mode != SCPL) { aspx_config(); } if (immersive_codec_mode == ASPX_ACPL_1) { acpl_config_1ch(PARTIAL); } if (immersive_codec_mode == ASPX_ACPL_2) { acpl_config_1ch(FULL); } } |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.4.3 22_2_channel_element | Syntax No of bits 22_2_channel_element(b_iframe) { 22_2_codec_mode; ............................................................................. 1 if (b_iframe) { if (22_2_codec_mode == ASPX) { aspx_config(); } } mono_data(1); mono_data(1); for (cp = 0; cp < 11; cp++) { two_channel_data(); } if (22_2_codec_mode == ASP... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.4.4 var_channel_element | Syntax No of bits var_channel_element(b_iframe, n_dmx_signals, b_has_lfe) { var_codec_mode; .............................................................................. 1 b_isodd = n_dmx_signals % 2; n_pairs = floor(n_dmx_signals / 2); if (var_codec_mode == ASPX) { if (b_iframe) { aspx_config(); } if (n_dmx_signals <... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.5 Advanced Joint Object Coding (A-JOC) | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.5.1 ajoc | Syntax No of bits ajoc(num_dmx_signals, num_umx_signals) { ajoc_num_decorr; ............................................................................. 3 ajoc_ctrl_info(num_dmx_signals, ajoc_num_decorr, num_umx_signals); ajoc_data(num_dmx_signals, num_umx_signals); } ETSI ETSI TS 103 190-2 V1.1.1 (2015-09) 114 |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.5.2 ajoc_ctrl_info | Syntax No of bits ajoc_ctrl_info(num_dmx_signals, ajoc_num_decorr, num_umx_signals) { for (d = 0; d < ajoc_num_decorr; d++) { ajoc_decorr_enable[d]; ..................................................................... 1 } for (o = 0; o < num_umx_signals; o++) { ajoc_object_present[o]; .................................... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.5.3 ajoc_data | Syntax No of bits ajoc_data(num_dmx_signals, num_umx_signals) { ajoc_b_nodt; ................................................................................. 1 for (o = 0; o < num_umx_signals; o++) { if (ajoc_object_present[o]) { for (dp = 0; dp < ajoc_num_dpoints; dp++) { b_dfonly = (dp == 0 && ajoc_b_nodt); nb = ajo... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.5.4 ajoc_data_point_info | Syntax No of bits ajoc_data_point_info() { ajoc_num_dpoints; ............................................................................ 2 for (dp = 0; dp < ajoc_num_dpoints; dp++) { ajoc_start_pos[dp]; ........................................................................ 5 ajoc_ramp_len_minus1[dp]; .................. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.5.5 ajoc_huff_data | Syntax No of bits ajoc_huff_data(data_type, data_bands, quant_select, b_dfonly) { if (b_dfonly) { diff_type = 0; } else { diff_type; ................................................................................. 1 } if (diff_type == 0) { ajoc_hcb = get_ajoc_hcb(data_type, quant_select, F0); ajoc_hcw; .................. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.6 Advanced Joint Channel Coding (A-JCC) | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.6.1 ajcc_data | Syntax No of bits ajcc_data(b_5fronts) { b_no_dt; ..................................................................................... 1 ajcc_num_param_bands_id; ..................................................................... 2 num_bands = ajcc_num_bands_table[ajcc_num_param_bands_id]; if (b_5fronts == 1) { ajcc... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.6.2 ajcc_framing_data | Syntax No of bits ajcc_framing_data() { ajcc_interpolation_type; ..................................................................... 1 ajcc_num_param_sets_code; .................................................................... 1 if (ajcc_interpolation_type == 1) { for (ps = 0; ps < ajcc_num_param_sets_code + 1; ps... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.6.3 ajced | Syntax No of bits ajced(data_type, data_bands, quant_mode, b_no_dt, num_ps) { for (ps = 0; ps < num_ps; ps++) { a_param_set[ps] = ajcc_huff_data(data_type, data_bands, quant_mode, b_no_dt); } return a_param_set; } |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.6.4 ajcc_huff_data | Syntax No of bits ajcc_huff_data(data_type, data_bands, quant_mode, b_no_dt) { if (b_no_dt == 1) { diff_type = 0; } else { diff_type; ................................................................................. 1 } if (diff_type == 0) { ajcc_hcb = get_ajcc_hcb(data_type, quant_mode, F0); ajcc_hcw; ................... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.7 Metadata | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.7.1 metadata | Syntax No of bits metadata(b_alternative, b_ajoc, b_iframe, sus_ver) { basic_metadata(sus_ver); extended_metadata(sus_ver); if (b_alternative and b_ajoc == 0) { oamd_dyndata_single(n_objs, num_obj_info_blocks, b_iframe, b_alternative, obj_type[n_objs], b_lfe[n_objs]); } tools_metadata_size_value; ......................... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.7.2 basic_metadata | Syntax No of bits basic_metadata(channel_mode, sus_ver) { if (sus_ver == 0) { dialnorm_bits; ............................................................................. 7 } b_more_basic_metadata; ....................................................................... 1 if (b_more_basic_metadata) { if (sus_ver == 0) {... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.7.3 further_loudness_info | Syntax No of bits further_loudness_info(sus_ver, b_presentation_ldn) { if (b_presentation_ldn or sus_ver == 0) { loudness_version; .......................................................................... 2 if (loudness_version == 3) { extended_loudness_version; ........................................................... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.7.4 extended_metadata | Syntax No of bits extended_metadata(channel_mode, b_associated, b_dialog, sus_ver) { if (sus_ver >= 1) { b_dialog; .................................................................................. 1 } else { if (b_associated) { b_scale_main; ............................................................................ ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.7.5 dialog_enhancement | Syntax No of bits dialog_enhancement(b_iframe) { b_de_data_present; ........................................................................... 1 if (b_de_data_present) { if (b_iframe) { de_config(); } else { b_de_config_flag; ........................................................................ 1 if (b_de_config_fl... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.7.6 de_data | Syntax No of bits de_data(de_method, de_nr_channels, b_iframe, b_de_simulcast) { if (de_nr_channels > 0) { if ((de_method == 1 or de_method == 3) and de_nr_channels > 1) { if (b_de_simulcast == 0) { if (b_iframe) { de_keep_pos_flag = 0; } else { de_keep_pos_flag; ........................................................... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.8 Object Audio Metadata (OAMD) | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.8.1 oamd_common_data | Syntax No of bits oamd_common_data() { b_default_screen_size_ratio; ................................................................. 1 if (b_default_screen_size_ratio == 0) { master_screen_size_ratio_code; ............................................................. 5 } b_bed_object_chan_distribute; .................... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.8.2 oamd_timing_data | Syntax No of bits oamd_timing_data() { oa_sample_offset_type; ..................................................................... 1/2 if (oa_sample_offset_type == 0b10) { oa_sample_offset_code; ................................................................... 1/2 } else { if (oa_sample_offset_type == 0b11) { oa_sam... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.8.3 oamd_dyndata_single | Syntax No of bits oamd_dyndata_single(n_objs, n_blocks, b_iframe, b_alternative, obj_type[n_objs], b_lfe[n_objs]) { for (i = 0; i < n_objs; i++) { if (obj_type[i] == DYN and b_lfe[i] == 0) { b_dynamic_object = 1; } else { b_dynamic_object = 0; } for (b = 0; b < n_blocks; b++) { object_info_block((b_iframe != 0) and (b ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.8.4 oamd_dyndata_multi | Syntax No of bits oamd_dyndata_multi(n_objs, n_blocks, b_iframe, obj_type[n_objs], b_lfe[n_objs], b_ajoc_coded[n_objs]) { for (i = 0; i < n_objs; i++) { if (b_ajoc_coded[i] == 0) { if (obj_type[i] == DYN and b_lfe[i] == 0) { b_dynamic_object = 1; } else { b_dynamic_object = 0; } for (b = 0; b < n_blocks; b++) { object_... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.8.5 object_info_block | Syntax No of bits object_info_block(b_no_delta, b_dynamic_object) { b_object_not_active; ......................................................................... 1 if (b_object_not_active) { object_basic_info_status = DEFAULT; } else { if (b_no_delta) { object_basic_info_status = ALL_NEW; } else { b_basic_info_reuse; ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.8.6 object_basic_info | Syntax No of bits object_basic_info() { b_default_basic_info_md; ..................................................................... 1 if (b_default_basic_info_md == 0) { basic_info_md; ........................................................................... 1/2 if (basic_info_md == 0b0 or basic_info_md == 0b10) {... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.8.7 object_render_info | Syntax No of bits object_render_info(object_render_info_status, b_no_delta) { if (object_render_info_status == ALL_NEW) { obj_render_info_mask = 0b111; } else { obj_render_info_mask; ...................................................................... 3 } if (obj_render_info_mask & 0b001) { if (b_no_delta) { b_diff_p... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.9 Presentation data | |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.9.1 loud_corr | Syntax No of bits loud_corr(pres_ch_mode, pres_ch_mode_core, b_objects) { b_obj_loud_corr = 0; if (b_objects == 1) { b_obj_loud_corr; ........................................................................... 1 } if (pres_ch_mode > 4 or b_obj_loud_corr == 1) { b_corr_for_immersive_out; ................................... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.9.2 custom_dmx_data | Syntax No of bits custom_dmx_data(pres_ch_mode, pres_ch_mode_core, b_pres_4_back_channels_present, pres_top_channel_pairs, b_pres_has_lfe) { bs_ch_config = -1; if (pres_ch_mode in [11, 12, 13, 14]) { if (pres_top_channel_pairs == 2) { if (pres_ch_mode >= 13 and b_pres_4_back_channels_present == 1) { bs_ch_config = 0; }... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.9.3 cdmx_parameters | Syntax No of bits cdmx_parameters(bs_ch_config, out_ch_config) { if (bs_ch_config == 0 or bs_ch_config == 3) { tool_scr_to_c_l(); } if (bs_ch_config < 2) { switch (out_ch_config) { case 0: tool_t4_to_f_s(); tool_b4_to_b2(); break; case 1: tool_t4_to_t2(); tool_b4_to_b2(); break; case 2: tool_b4_to_b2(); break; case 3: ... |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.9.4 tool_scr_to_c_l | Syntax No of bits tool_scr_to_c_l() { b_put_screen_to_c; ........................................................................... 1 if (b_put_screen_to_c == 1) { gain_f1_code; .............................................................................. 3 } else { gain_f2_code; ........................................ |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.9.5 tool_b4_to_b2 | Syntax No of bits tool_b4_to_b2() { gain_b_code; ................................................................................. 3 } |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.9.6 tool_t4_to_t2 | Syntax No of bits tool_t4_to_t2() { gain_t1_code; ................................................................................ 3 } |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.9.7 tool_t4_to_f_s_b | Syntax No of bits tool_t4_to_f_s_b() { b_top_front_to_front; ........................................................................ 1 if (b_top_front_to_front == 1) { gain_t2a_code; ............................................................................. 3 } else { b_top_front_to_side; ............................. |
9cc71134e4c63574779a8d3d5ef00858 | 103 190-2 | 6.2.9.8 tool_t4_to_f_s | Syntax No of bits tool_t4_to_f_s() { b_top_front_to_front; ........................................................................ 1 if (b_top_front_to_front == 1) { gain_t2a_code; ............................................................................. 3 } else { gain_t2b_code; ..................................... |
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