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21 #ifndef AVCODEC_HEVC_H
22 #define AVCODEC_HEVC_H
25 * Table 7-3: NAL unit type codes
27 enum HEVCNALUnitType {
38 HEVC_NAL_VCL_N10 = 10,
39 HEVC_NAL_VCL_R11 = 11,
40 HEVC_NAL_VCL_N12 = 12,
41 HEVC_NAL_VCL_R13 = 13,
42 HEVC_NAL_VCL_N14 = 14,
43 HEVC_NAL_VCL_R15 = 15,
44 HEVC_NAL_BLA_W_LP = 16,
45 HEVC_NAL_BLA_W_RADL = 17,
46 HEVC_NAL_BLA_N_LP = 18,
47 HEVC_NAL_IDR_W_RADL = 19,
48 HEVC_NAL_IDR_N_LP = 20,
49 HEVC_NAL_CRA_NUT = 21,
50 HEVC_NAL_IRAP_VCL22 = 22,
51 HEVC_NAL_IRAP_VCL23 = 23,
52 HEVC_NAL_RSV_VCL24 = 24,
53 HEVC_NAL_RSV_VCL25 = 25,
54 HEVC_NAL_RSV_VCL26 = 26,
55 HEVC_NAL_RSV_VCL27 = 27,
56 HEVC_NAL_RSV_VCL28 = 28,
57 HEVC_NAL_RSV_VCL29 = 29,
58 HEVC_NAL_RSV_VCL30 = 30,
59 HEVC_NAL_RSV_VCL31 = 31,
64 HEVC_NAL_EOS_NUT = 36,
65 HEVC_NAL_EOB_NUT = 37,
67 HEVC_NAL_SEI_PREFIX = 39,
68 HEVC_NAL_SEI_SUFFIX = 40,
78 // 7.4.3.1: vps_max_layers_minus1 is in [0, 62].
80 // 7.4.3.1: vps_max_sub_layers_minus1 is in [0, 6].
81 HEVC_MAX_SUB_LAYERS = 7,
82 // 7.4.3.1: vps_num_layer_sets_minus1 is in [0, 1023].
83 HEVC_MAX_LAYER_SETS = 1024,
85 // 7.4.2.1: vps_video_parameter_set_id is u(4).
86 HEVC_MAX_VPS_COUNT = 16,
87 // 7.4.3.2.1: sps_seq_parameter_set_id is in [0, 15].
88 HEVC_MAX_SPS_COUNT = 16,
89 // 7.4.3.3.1: pps_pic_parameter_set_id is in [0, 63].
90 HEVC_MAX_PPS_COUNT = 64,
92 // A.4.2: MaxDpbSize is bounded above by 16.
93 HEVC_MAX_DPB_SIZE = 16,
94 // 7.4.3.1: vps_max_dec_pic_buffering_minus1[i] is in [0, MaxDpbSize - 1].
95 HEVC_MAX_REFS = HEVC_MAX_DPB_SIZE,
97 // 7.4.3.2.1: num_short_term_ref_pic_sets is in [0, 64].
98 HEVC_MAX_SHORT_TERM_REF_PIC_SETS = 64,
99 // 7.4.3.2.1: num_long_term_ref_pics_sps is in [0, 32].
100 HEVC_MAX_LONG_TERM_REF_PICS = 32,
102 // A.3: all profiles require that CtbLog2SizeY is in [4, 6].
103 HEVC_MIN_LOG2_CTB_SIZE = 4,
104 HEVC_MAX_LOG2_CTB_SIZE = 6,
106 // E.3.2: cpb_cnt_minus1[i] is in [0, 31].
107 HEVC_MAX_CPB_CNT = 32,
109 // A.4.1: in table A.6 the highest level allows a MaxLumaPs of 35 651 584.
110 HEVC_MAX_LUMA_PS = 35651584,
111 // A.4.1: pic_width_in_luma_samples and pic_height_in_luma_samples are
112 // constrained to be not greater than sqrt(MaxLumaPs * 8). Hence height/
113 // width are bounded above by sqrt(8 * 35651584) = 16888.2 samples.
114 HEVC_MAX_WIDTH = 16888,
115 HEVC_MAX_HEIGHT = 16888,
117 // A.4.1: table A.6 allows at most 22 tile rows for any level.
118 HEVC_MAX_TILE_ROWS = 22,
119 // A.4.1: table A.6 allows at most 20 tile columns for any level.
120 HEVC_MAX_TILE_COLUMNS = 20,
122 // 7.4.7.1: in the worst case (tiles_enabled_flag and
123 // entropy_coding_sync_enabled_flag are both set), entry points can be
124 // placed at the beginning of every Ctb row in every tile, giving an
125 // upper bound of (num_tile_columns_minus1 + 1) * PicHeightInCtbsY - 1.
126 // Only a stream with very high resolution and perverse parameters could
127 // get near that, though, so set a lower limit here with the maximum
128 // possible value for 4K video (at most 135 16x16 Ctb rows).
129 HEVC_MAX_ENTRY_POINT_OFFSETS = HEVC_MAX_TILE_COLUMNS * 135,
133 #endif /* AVCODEC_HEVC_H */