OpenFFmpeg
av1.h
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
24 #ifndef AVCODEC_AV1_H
25 #define AVCODEC_AV1_H
26 
27 // OBU types (section 6.2.2).
28 typedef enum {
29  // 0 reserved.
30  AV1_OBU_SEQUENCE_HEADER = 1,
31  AV1_OBU_TEMPORAL_DELIMITER = 2,
32  AV1_OBU_FRAME_HEADER = 3,
33  AV1_OBU_TILE_GROUP = 4,
34  AV1_OBU_METADATA = 5,
35  AV1_OBU_FRAME = 6,
36  AV1_OBU_REDUNDANT_FRAME_HEADER = 7,
37  AV1_OBU_TILE_LIST = 8,
38  // 9-14 reserved.
39  AV1_OBU_PADDING = 15,
40 } AV1_OBU_Type;
41 
42 // Metadata types (section 6.7.1).
43 enum {
44  AV1_METADATA_TYPE_HDR_CLL = 1,
45  AV1_METADATA_TYPE_HDR_MDCV = 2,
46  AV1_METADATA_TYPE_SCALABILITY = 3,
47  AV1_METADATA_TYPE_ITUT_T35 = 4,
48  AV1_METADATA_TYPE_TIMECODE = 5,
49 };
50 
51 // Frame types (section 6.8.2).
52 enum {
53  AV1_FRAME_KEY = 0,
54  AV1_FRAME_INTER = 1,
55  AV1_FRAME_INTRA_ONLY = 2,
56  AV1_FRAME_SWITCH = 3,
57 };
58 
59 // Reference frames (section 6.10.24).
60 enum {
61  AV1_REF_FRAME_INTRA = 0,
62  AV1_REF_FRAME_LAST = 1,
63  AV1_REF_FRAME_LAST2 = 2,
64  AV1_REF_FRAME_LAST3 = 3,
65  AV1_REF_FRAME_GOLDEN = 4,
66  AV1_REF_FRAME_BWDREF = 5,
67  AV1_REF_FRAME_ALTREF2 = 6,
68  AV1_REF_FRAME_ALTREF = 7,
69 };
70 
71 // Constants (section 3).
72 enum {
73  AV1_MAX_OPERATING_POINTS = 32,
74 
75  AV1_MAX_SB_SIZE = 128,
76  AV1_MI_SIZE = 4,
77 
78  AV1_MAX_TILE_WIDTH = 4096,
79  AV1_MAX_TILE_AREA = 4096 * 2304,
80  AV1_MAX_TILE_ROWS = 64,
81  AV1_MAX_TILE_COLS = 64,
82 
83  AV1_NUM_REF_FRAMES = 8,
84  AV1_REFS_PER_FRAME = 7,
85  AV1_TOTAL_REFS_PER_FRAME = 8,
86  AV1_PRIMARY_REF_NONE = 7,
87 
88  AV1_MAX_SEGMENTS = 8,
89  AV1_SEG_LVL_MAX = 8,
90 
91  AV1_SEG_LVL_ALT_Q = 0,
92  AV1_SEG_LVL_ALT_LF_Y_V = 1,
93  AV1_SEG_LVL_REF_FRAME = 5,
94  AV1_SEG_LVL_SKIP = 6,
95  AV1_SEG_LVL_GLOBAL_MV = 7,
96 
97  AV1_SELECT_SCREEN_CONTENT_TOOLS = 2,
98  AV1_SELECT_INTEGER_MV = 2,
99 
100  AV1_SUPERRES_NUM = 8,
101  AV1_SUPERRES_DENOM_MIN = 9,
102 
103  AV1_INTERPOLATION_FILTER_SWITCHABLE = 4,
104 
105  AV1_GM_ABS_ALPHA_BITS = 12,
106  AV1_GM_ALPHA_PREC_BITS = 15,
107  AV1_GM_ABS_TRANS_ONLY_BITS = 9,
108  AV1_GM_TRANS_ONLY_PREC_BITS = 3,
109  AV1_GM_ABS_TRANS_BITS = 12,
110  AV1_GM_TRANS_PREC_BITS = 6,
111  AV1_WARPEDMODEL_PREC_BITS = 16,
112 
113  AV1_WARP_MODEL_IDENTITY = 0,
114  AV1_WARP_MODEL_TRANSLATION = 1,
115  AV1_WARP_MODEL_ROTZOOM = 2,
116  AV1_WARP_MODEL_AFFINE = 3,
117 };
118 
119 
120 // The main colour configuration information uses the same ISO/IEC 23001-8
121 // (H.273) enums as FFmpeg does, so separate definitions are not required.
122 
123 // Chroma sample position.
124 enum {
125  AV1_CSP_UNKNOWN = 0,
126  AV1_CSP_VERTICAL = 1, // -> AVCHROMA_LOC_LEFT.
127  AV1_CSP_COLOCATED = 2, // -> AVCHROMA_LOC_TOPLEFT.
128 };
129 
130 #endif /* AVCODEC_AV1_H */
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