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 19/** 20 * @file 21 * AV1 common definitions 22 */ 23 24#ifndef AVCODEC_AV1_H 25#define AVCODEC_AV1_H 26 27// OBU types (section 6.2.2). 28typedef 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). 43enum { 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). 52enum { 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). 60enum { 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). 72enum { 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 AV1_WARP_PARAM_REDUCE_BITS = 6, 118 119 AV1_DIV_LUT_BITS = 8, 120 AV1_DIV_LUT_PREC_BITS = 14, 121 AV1_DIV_LUT_NUM = 257, 122 123 AV1_MAX_LOOP_FILTER = 63, 124}; 125 126 127// The main colour configuration information uses the same ISO/IEC 23001-8 128// (H.273) enums as FFmpeg does, so separate definitions are not required. 129 130// Chroma sample position. 131enum { 132 AV1_CSP_UNKNOWN = 0, 133 AV1_CSP_VERTICAL = 1, // -> AVCHROMA_LOC_LEFT. 134 AV1_CSP_COLOCATED = 2, // -> AVCHROMA_LOC_TOPLEFT. 135}; 136 137// Scalability modes (section 6.7.5) 138enum { 139 AV1_SCALABILITY_L1T2 = 0, 140 AV1_SCALABILITY_L1T3 = 1, 141 AV1_SCALABILITY_L2T1 = 2, 142 AV1_SCALABILITY_L2T2 = 3, 143 AV1_SCALABILITY_L2T3 = 4, 144 AV1_SCALABILITY_S2T1 = 5, 145 AV1_SCALABILITY_S2T2 = 6, 146 AV1_SCALABILITY_S2T3 = 7, 147 AV1_SCALABILITY_L2T1h = 8, 148 AV1_SCALABILITY_L2T2h = 9, 149 AV1_SCALABILITY_L2T3h = 10, 150 AV1_SCALABILITY_S2T1h = 11, 151 AV1_SCALABILITY_S2T2h = 12, 152 AV1_SCALABILITY_S2T3h = 13, 153 AV1_SCALABILITY_SS = 14, 154 AV1_SCALABILITY_L3T1 = 15, 155 AV1_SCALABILITY_L3T2 = 16, 156 AV1_SCALABILITY_L3T3 = 17, 157 AV1_SCALABILITY_S3T1 = 18, 158 AV1_SCALABILITY_S3T2 = 19, 159 AV1_SCALABILITY_S3T3 = 20, 160 AV1_SCALABILITY_L3T2_KEY = 21, 161 AV1_SCALABILITY_L3T3_KEY = 22, 162 AV1_SCALABILITY_L4T5_KEY = 23, 163 AV1_SCALABILITY_L4T7_KEY = 24, 164 AV1_SCALABILITY_L3T2_KEY_SHIFT = 25, 165 AV1_SCALABILITY_L3T3_KEY_SHIFT = 26, 166 AV1_SCALABILITY_L4T5_KEY_SHIFT = 27, 167 AV1_SCALABILITY_L4T7_KEY_SHIFT = 28, 168}; 169 170// Frame Restoration types (section 6.10.15) 171enum { 172 AV1_RESTORE_NONE = 0, 173 AV1_RESTORE_WIENER = 1, 174 AV1_RESTORE_SGRPROJ = 2, 175 AV1_RESTORE_SWITCHABLE = 3, 176}; 177 178// Sequence Headers are actually unbounded because one can use 179// an arbitrary number of leading zeroes when encoding via uvlc. 180// The following estimate is based around using the lowest number 181// of bits for uvlc encoding. 182#define AV1_SANE_SEQUENCE_HEADER_MAX_BITS 3138 183 184#endif /* AVCODEC_AV1_H */ 185