FFmpeg
hevc.h
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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_H
22 #define AVCODEC_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 
109  // 7.4.2.1: vps_video_parameter_set_id is u(4).
111  // 7.4.3.2.1: sps_seq_parameter_set_id is in [0, 15].
113  // 7.4.3.3.1: pps_pic_parameter_set_id is in [0, 63].
115 
116  // A.4.2: MaxDpbSize is bounded above by 16.
118  // 7.4.3.1: vps_max_dec_pic_buffering_minus1[i] is in [0, MaxDpbSize - 1].
120 
121  // 7.4.3.2.1: num_short_term_ref_pic_sets is in [0, 64].
123  // 7.4.3.2.1: num_long_term_ref_pics_sps is in [0, 32].
125 
126  // A.3: all profiles require that CtbLog2SizeY is in [4, 6].
129 
130  // E.3.2: cpb_cnt_minus1[i] is in [0, 31].
132 
133  // A.4.1: in table A.6 the highest level allows a MaxLumaPs of 35 651 584.
134  HEVC_MAX_LUMA_PS = 35651584,
135  // A.4.1: pic_width_in_luma_samples and pic_height_in_luma_samples are
136  // constrained to be not greater than sqrt(MaxLumaPs * 8). Hence height/
137  // width are bounded above by sqrt(8 * 35651584) = 16888.2 samples.
138  HEVC_MAX_WIDTH = 16888,
140 
141  // A.4.1: table A.6 allows at most 22 tile rows for any level.
143  // A.4.1: table A.6 allows at most 20 tile columns for any level.
145 
146  // A.4.2: table A.6 allows at most 600 slice segments for any level.
148 
149  // 7.4.7.1: in the worst case (tiles_enabled_flag and
150  // entropy_coding_sync_enabled_flag are both set), entry points can be
151  // placed at the beginning of every Ctb row in every tile, giving an
152  // upper bound of (num_tile_columns_minus1 + 1) * PicHeightInCtbsY - 1.
153  // Only a stream with very high resolution and perverse parameters could
154  // get near that, though, so set a lower limit here with the maximum
155  // possible value for 4K video (at most 135 16x16 Ctb rows).
157 };
158 
159 
160 #endif /* AVCODEC_HEVC_H */
HEVC_MIN_LOG2_CTB_SIZE
@ HEVC_MIN_LOG2_CTB_SIZE
Definition: hevc.h:127
HEVC_MAX_LUMA_PS
@ HEVC_MAX_LUMA_PS
Definition: hevc.h:134
HEVC_NAL_RADL_N
@ HEVC_NAL_RADL_N
Definition: hevc.h:35
HEVC_MAX_LONG_TERM_REF_PICS
@ HEVC_MAX_LONG_TERM_REF_PICS
Definition: hevc.h:124
HEVC_MAX_VPS_COUNT
@ HEVC_MAX_VPS_COUNT
Definition: hevc.h:110
HEVCSliceType
HEVCSliceType
Definition: hevc.h:95
HEVC_MAX_TILE_COLUMNS
@ HEVC_MAX_TILE_COLUMNS
Definition: hevc.h:144
HEVC_NAL_RSV_NVCL43
@ HEVC_NAL_RSV_NVCL43
Definition: hevc.h:72
HEVC_NAL_STSA_N
@ HEVC_NAL_STSA_N
Definition: hevc.h:33
HEVC_NAL_TSA_N
@ HEVC_NAL_TSA_N
Definition: hevc.h:31
HEVC_MAX_SPS_COUNT
@ HEVC_MAX_SPS_COUNT
Definition: hevc.h:112
HEVC_NAL_RSV_NVCL47
@ HEVC_NAL_RSV_NVCL47
Definition: hevc.h:76
HEVC_MAX_TILE_ROWS
@ HEVC_MAX_TILE_ROWS
Definition: hevc.h:142
HEVC_NAL_UNSPEC55
@ HEVC_NAL_UNSPEC55
Definition: hevc.h:84
HEVC_NAL_RASL_N
@ HEVC_NAL_RASL_N
Definition: hevc.h:37
HEVC_NAL_STSA_R
@ HEVC_NAL_STSA_R
Definition: hevc.h:34
HEVC_NAL_BLA_W_RADL
@ HEVC_NAL_BLA_W_RADL
Definition: hevc.h:46
HEVC_NAL_RSV_NVCL46
@ HEVC_NAL_RSV_NVCL46
Definition: hevc.h:75
HEVC_MAX_REFS
@ HEVC_MAX_REFS
Definition: hevc.h:119
HEVC_NAL_RSV_VCL30
@ HEVC_NAL_RSV_VCL30
Definition: hevc.h:59
HEVC_NAL_UNSPEC62
@ HEVC_NAL_UNSPEC62
Definition: hevc.h:91
HEVC_NAL_BLA_N_LP
@ HEVC_NAL_BLA_N_LP
Definition: hevc.h:47
HEVC_NAL_RADL_R
@ HEVC_NAL_RADL_R
Definition: hevc.h:36
HEVC_NAL_UNSPEC49
@ HEVC_NAL_UNSPEC49
Definition: hevc.h:78
HEVC_NAL_RSV_VCL31
@ HEVC_NAL_RSV_VCL31
Definition: hevc.h:60
HEVC_NAL_VCL_N14
@ HEVC_NAL_VCL_N14
Definition: hevc.h:43
HEVC_NAL_UNSPEC58
@ HEVC_NAL_UNSPEC58
Definition: hevc.h:87
HEVC_NAL_VCL_N12
@ HEVC_NAL_VCL_N12
Definition: hevc.h:41
HEVC_NAL_RSV_VCL28
@ HEVC_NAL_RSV_VCL28
Definition: hevc.h:57
HEVC_SLICE_I
@ HEVC_SLICE_I
Definition: hevc.h:98
HEVC_NAL_VCL_N10
@ HEVC_NAL_VCL_N10
Definition: hevc.h:39
HEVC_NAL_IDR_N_LP
@ HEVC_NAL_IDR_N_LP
Definition: hevc.h:49
HEVC_NAL_UNSPEC63
@ HEVC_NAL_UNSPEC63
Definition: hevc.h:92
HEVC_MAX_WIDTH
@ HEVC_MAX_WIDTH
Definition: hevc.h:138
HEVC_SLICE_B
@ HEVC_SLICE_B
Definition: hevc.h:96
HEVC_NAL_PPS
@ HEVC_NAL_PPS
Definition: hevc.h:63
HEVC_NAL_RSV_NVCL41
@ HEVC_NAL_RSV_NVCL41
Definition: hevc.h:70
HEVC_MAX_SUB_LAYERS
@ HEVC_MAX_SUB_LAYERS
Definition: hevc.h:105
HEVC_MAX_LAYERS
@ HEVC_MAX_LAYERS
Definition: hevc.h:103
HEVC_NAL_SEI_SUFFIX
@ HEVC_NAL_SEI_SUFFIX
Definition: hevc.h:69
HEVC_NAL_UNSPEC51
@ HEVC_NAL_UNSPEC51
Definition: hevc.h:80
HEVC_NAL_CRA_NUT
@ HEVC_NAL_CRA_NUT
Definition: hevc.h:50
HEVC_NAL_UNSPEC56
@ HEVC_NAL_UNSPEC56
Definition: hevc.h:85
HEVC_NAL_RSV_VCL24
@ HEVC_NAL_RSV_VCL24
Definition: hevc.h:53
HEVC_NAL_RASL_R
@ HEVC_NAL_RASL_R
Definition: hevc.h:38
HEVC_MAX_PPS_COUNT
@ HEVC_MAX_PPS_COUNT
Definition: hevc.h:114
HEVC_NAL_UNSPEC59
@ HEVC_NAL_UNSPEC59
Definition: hevc.h:88
HEVC_MAX_ENTRY_POINT_OFFSETS
@ HEVC_MAX_ENTRY_POINT_OFFSETS
Definition: hevc.h:156
HEVC_MAX_SHORT_TERM_REF_PIC_SETS
@ HEVC_MAX_SHORT_TERM_REF_PIC_SETS
Definition: hevc.h:122
HEVC_MAX_LOG2_CTB_SIZE
@ HEVC_MAX_LOG2_CTB_SIZE
Definition: hevc.h:128
HEVC_MAX_CPB_CNT
@ HEVC_MAX_CPB_CNT
Definition: hevc.h:131
HEVC_NAL_RSV_NVCL44
@ HEVC_NAL_RSV_NVCL44
Definition: hevc.h:73
HEVC_NAL_BLA_W_LP
@ HEVC_NAL_BLA_W_LP
Definition: hevc.h:45
HEVC_NAL_VCL_R11
@ HEVC_NAL_VCL_R11
Definition: hevc.h:40
HEVC_NAL_RSV_NVCL45
@ HEVC_NAL_RSV_NVCL45
Definition: hevc.h:74
HEVC_NAL_UNSPEC54
@ HEVC_NAL_UNSPEC54
Definition: hevc.h:83
HEVC_NAL_RSV_IRAP_VCL22
@ HEVC_NAL_RSV_IRAP_VCL22
Definition: hevc.h:51
HEVC_NAL_RSV_IRAP_VCL23
@ HEVC_NAL_RSV_IRAP_VCL23
Definition: hevc.h:52
HEVC_NAL_TRAIL_R
@ HEVC_NAL_TRAIL_R
Definition: hevc.h:30
HEVC_MAX_LAYER_SETS
@ HEVC_MAX_LAYER_SETS
Definition: hevc.h:107
HEVC_NAL_RSV_VCL25
@ HEVC_NAL_RSV_VCL25
Definition: hevc.h:54
HEVC_SLICE_P
@ HEVC_SLICE_P
Definition: hevc.h:97
HEVC_NAL_UNSPEC57
@ HEVC_NAL_UNSPEC57
Definition: hevc.h:86
HEVC_NAL_VCL_R13
@ HEVC_NAL_VCL_R13
Definition: hevc.h:42
HEVC_NAL_VCL_R15
@ HEVC_NAL_VCL_R15
Definition: hevc.h:44
HEVCNALUnitType
HEVCNALUnitType
Table 7-1 – NAL unit type codes and NAL unit type classes in T-REC-H.265-201802.
Definition: hevc.h:28
HEVC_NAL_TSA_R
@ HEVC_NAL_TSA_R
Definition: hevc.h:32
HEVC_NAL_VPS
@ HEVC_NAL_VPS
Definition: hevc.h:61
HEVC_NAL_IDR_W_RADL
@ HEVC_NAL_IDR_W_RADL
Definition: hevc.h:48
HEVC_NAL_UNSPEC61
@ HEVC_NAL_UNSPEC61
Definition: hevc.h:90
HEVC_MAX_HEIGHT
@ HEVC_MAX_HEIGHT
Definition: hevc.h:139
HEVC_NAL_EOS_NUT
@ HEVC_NAL_EOS_NUT
Definition: hevc.h:65
HEVC_NAL_TRAIL_N
@ HEVC_NAL_TRAIL_N
Definition: hevc.h:29
HEVC_NAL_AUD
@ HEVC_NAL_AUD
Definition: hevc.h:64
HEVC_NAL_RSV_VCL26
@ HEVC_NAL_RSV_VCL26
Definition: hevc.h:55
HEVC_NAL_RSV_VCL27
@ HEVC_NAL_RSV_VCL27
Definition: hevc.h:56
HEVC_NAL_RSV_VCL29
@ HEVC_NAL_RSV_VCL29
Definition: hevc.h:58
HEVC_NAL_SPS
@ HEVC_NAL_SPS
Definition: hevc.h:62
HEVC_NAL_UNSPEC52
@ HEVC_NAL_UNSPEC52
Definition: hevc.h:81
HEVC_MAX_DPB_SIZE
@ HEVC_MAX_DPB_SIZE
Definition: hevc.h:117
HEVC_NAL_UNSPEC48
@ HEVC_NAL_UNSPEC48
Definition: hevc.h:77
HEVC_NAL_UNSPEC53
@ HEVC_NAL_UNSPEC53
Definition: hevc.h:82
HEVC_NAL_FD_NUT
@ HEVC_NAL_FD_NUT
Definition: hevc.h:67
HEVC_MAX_SLICE_SEGMENTS
@ HEVC_MAX_SLICE_SEGMENTS
Definition: hevc.h:147
HEVC_NAL_EOB_NUT
@ HEVC_NAL_EOB_NUT
Definition: hevc.h:66
HEVC_NAL_UNSPEC60
@ HEVC_NAL_UNSPEC60
Definition: hevc.h:89
HEVC_NAL_SEI_PREFIX
@ HEVC_NAL_SEI_PREFIX
Definition: hevc.h:68
HEVC_NAL_UNSPEC50
@ HEVC_NAL_UNSPEC50
Definition: hevc.h:79
HEVC_NAL_RSV_NVCL42
@ HEVC_NAL_RSV_NVCL42
Definition: hevc.h:71