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| -rw-r--r-- | media/ffvpx/libavcodec/av1.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/av1.h b/media/ffvpx/libavcodec/av1.h new file mode 100644 index 0000000000..384f7cddc7 --- /dev/null +++ b/media/ffvpx/libavcodec/av1.h @@ -0,0 +1,184 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * AV1 common definitions + */ + +#ifndef AVCODEC_AV1_H +#define AVCODEC_AV1_H + +// OBU types (section 6.2.2). +typedef enum { + // 0 reserved. + AV1_OBU_SEQUENCE_HEADER = 1, + AV1_OBU_TEMPORAL_DELIMITER = 2, + AV1_OBU_FRAME_HEADER = 3, + AV1_OBU_TILE_GROUP = 4, + AV1_OBU_METADATA = 5, + AV1_OBU_FRAME = 6, + AV1_OBU_REDUNDANT_FRAME_HEADER = 7, + AV1_OBU_TILE_LIST = 8, + // 9-14 reserved. + AV1_OBU_PADDING = 15, +} AV1_OBU_Type; + +// Metadata types (section 6.7.1). +enum { + AV1_METADATA_TYPE_HDR_CLL = 1, + AV1_METADATA_TYPE_HDR_MDCV = 2, + AV1_METADATA_TYPE_SCALABILITY = 3, + AV1_METADATA_TYPE_ITUT_T35 = 4, + AV1_METADATA_TYPE_TIMECODE = 5, +}; + +// Frame types (section 6.8.2). +enum { + AV1_FRAME_KEY = 0, + AV1_FRAME_INTER = 1, + AV1_FRAME_INTRA_ONLY = 2, + AV1_FRAME_SWITCH = 3, +}; + +// Reference frames (section 6.10.24). +enum { + AV1_REF_FRAME_INTRA = 0, + AV1_REF_FRAME_LAST = 1, + AV1_REF_FRAME_LAST2 = 2, + AV1_REF_FRAME_LAST3 = 3, + AV1_REF_FRAME_GOLDEN = 4, + AV1_REF_FRAME_BWDREF = 5, + AV1_REF_FRAME_ALTREF2 = 6, + AV1_REF_FRAME_ALTREF = 7, +}; + +// Constants (section 3). +enum { + AV1_MAX_OPERATING_POINTS = 32, + + AV1_MAX_SB_SIZE = 128, + AV1_MI_SIZE = 4, + + AV1_MAX_TILE_WIDTH = 4096, + AV1_MAX_TILE_AREA = 4096 * 2304, + AV1_MAX_TILE_ROWS = 64, + AV1_MAX_TILE_COLS = 64, + + AV1_NUM_REF_FRAMES = 8, + AV1_REFS_PER_FRAME = 7, + AV1_TOTAL_REFS_PER_FRAME = 8, + AV1_PRIMARY_REF_NONE = 7, + + AV1_MAX_SEGMENTS = 8, + AV1_SEG_LVL_MAX = 8, + + AV1_SEG_LVL_ALT_Q = 0, + AV1_SEG_LVL_ALT_LF_Y_V = 1, + AV1_SEG_LVL_REF_FRAME = 5, + AV1_SEG_LVL_SKIP = 6, + AV1_SEG_LVL_GLOBAL_MV = 7, + + AV1_SELECT_SCREEN_CONTENT_TOOLS = 2, + AV1_SELECT_INTEGER_MV = 2, + + AV1_SUPERRES_NUM = 8, + AV1_SUPERRES_DENOM_MIN = 9, + + AV1_INTERPOLATION_FILTER_SWITCHABLE = 4, + + AV1_GM_ABS_ALPHA_BITS = 12, + AV1_GM_ALPHA_PREC_BITS = 15, + AV1_GM_ABS_TRANS_ONLY_BITS = 9, + AV1_GM_TRANS_ONLY_PREC_BITS = 3, + AV1_GM_ABS_TRANS_BITS = 12, + AV1_GM_TRANS_PREC_BITS = 6, + AV1_WARPEDMODEL_PREC_BITS = 16, + + AV1_WARP_MODEL_IDENTITY = 0, + AV1_WARP_MODEL_TRANSLATION = 1, + AV1_WARP_MODEL_ROTZOOM = 2, + AV1_WARP_MODEL_AFFINE = 3, + AV1_WARP_PARAM_REDUCE_BITS = 6, + + AV1_DIV_LUT_BITS = 8, + AV1_DIV_LUT_PREC_BITS = 14, + AV1_DIV_LUT_NUM = 257, + + AV1_MAX_LOOP_FILTER = 63, +}; + + +// The main colour configuration information uses the same ISO/IEC 23001-8 +// (H.273) enums as FFmpeg does, so separate definitions are not required. + +// Chroma sample position. +enum { + AV1_CSP_UNKNOWN = 0, + AV1_CSP_VERTICAL = 1, // -> AVCHROMA_LOC_LEFT. + AV1_CSP_COLOCATED = 2, // -> AVCHROMA_LOC_TOPLEFT. +}; + +// Scalability modes (section 6.7.5) +enum { + AV1_SCALABILITY_L1T2 = 0, + AV1_SCALABILITY_L1T3 = 1, + AV1_SCALABILITY_L2T1 = 2, + AV1_SCALABILITY_L2T2 = 3, + AV1_SCALABILITY_L2T3 = 4, + AV1_SCALABILITY_S2T1 = 5, + AV1_SCALABILITY_S2T2 = 6, + AV1_SCALABILITY_S2T3 = 7, + AV1_SCALABILITY_L2T1h = 8, + AV1_SCALABILITY_L2T2h = 9, + AV1_SCALABILITY_L2T3h = 10, + AV1_SCALABILITY_S2T1h = 11, + AV1_SCALABILITY_S2T2h = 12, + AV1_SCALABILITY_S2T3h = 13, + AV1_SCALABILITY_SS = 14, + AV1_SCALABILITY_L3T1 = 15, + AV1_SCALABILITY_L3T2 = 16, + AV1_SCALABILITY_L3T3 = 17, + AV1_SCALABILITY_S3T1 = 18, + AV1_SCALABILITY_S3T2 = 19, + AV1_SCALABILITY_S3T3 = 20, + AV1_SCALABILITY_L3T2_KEY = 21, + AV1_SCALABILITY_L3T3_KEY = 22, + AV1_SCALABILITY_L4T5_KEY = 23, + AV1_SCALABILITY_L4T7_KEY = 24, + AV1_SCALABILITY_L3T2_KEY_SHIFT = 25, + AV1_SCALABILITY_L3T3_KEY_SHIFT = 26, + AV1_SCALABILITY_L4T5_KEY_SHIFT = 27, + AV1_SCALABILITY_L4T7_KEY_SHIFT = 28, +}; + +// Frame Restoration types (section 6.10.15) +enum { + AV1_RESTORE_NONE = 0, + AV1_RESTORE_WIENER = 1, + AV1_RESTORE_SGRPROJ = 2, + AV1_RESTORE_SWITCHABLE = 3, +}; + +// Sequence Headers are actually unbounded because one can use +// an arbitrary number of leading zeroes when encoding via uvlc. +// The following estimate is based around using the lowest number +// of bits for uvlc encoding. +#define AV1_SANE_SEQUENCE_HEADER_MAX_BITS 3138 + +#endif /* AVCODEC_AV1_H */ |