1 /*
2 * HEVC shared code
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef AVCODEC_HEVC_HEVC_H
22 #define AVCODEC_HEVC_HEVC_H
23
24 /**
25 * Table 7-1 – NAL unit type codes and NAL unit type classes in
26 * T-REC-H.265-201802
27 */
93 };
94
99 };
100
101 enum {
102 // 7.4.3.1: vps_max_layers_minus1 is in [0, 62].
104 // 7.4.3.1: vps_max_sub_layers_minus1 is in [0, 6].
106 // 7.4.3.1: vps_num_layer_sets_minus1 is in [0, 1023].
108 // 7.4.3.1: vps_max_layer_id is in [0, 63].
111
112 // 7.4.2.1: vps_video_parameter_set_id is u(4).
114 // 7.4.3.2.1: sps_seq_parameter_set_id is in [0, 15].
116 // 7.4.3.3.1: pps_pic_parameter_set_id is in [0, 63].
118
119 // A.4.2: MaxDpbSize is bounded above by 16.
121 // 7.4.3.1: vps_max_dec_pic_buffering_minus1[i] is in [0, MaxDpbSize - 1].
123
124 // 7.4.3.2.1: num_short_term_ref_pic_sets is in [0, 64].
126 // 7.4.3.2.1: num_long_term_ref_pics_sps is in [0, 32].
128
129 // A.3: all profiles require that CtbLog2SizeY is in [4, 6].
132
133 // E.3.2: cpb_cnt_minus1[i] is in [0, 31].
135
136 // A.4.1: in table A.6 the highest level allows a MaxLumaPs of 35 651 584.
138 // A.4.1: pic_width_in_luma_samples and pic_height_in_luma_samples are
139 // constrained to be not greater than sqrt(MaxLumaPs * 8). Hence height/
140 // width are bounded above by sqrt(8 * 35651584) = 16888.2 samples.
143
144 // A.4.1: table A.6 allows at most 22 tile rows for any level.
146 // A.4.1: table A.6 allows at most 20 tile columns for any level.
148
149 // A.4.2: table A.6 allows at most 600 slice segments for any level.
151
152 // 7.4.7.1: in the worst case (tiles_enabled_flag and
153 // entropy_coding_sync_enabled_flag are both set), entry points can be
154 // placed at the beginning of every Ctb row in every tile, giving an
155 // upper bound of (num_tile_columns_minus1 + 1) * PicHeightInCtbsY - 1.
156 // Only a stream with very high resolution and perverse parameters could
157 // get near that, though, so set a lower limit here with the maximum
158 // possible value for 4K video (at most 135 16x16 Ctb rows).
160
161 // A.3.7: Screen content coding extensions
163 };
164
165
166 #endif /* AVCODEC_HEVC_HEVC_H */