/* * 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_NONE    = -1,    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,}; // TX mode (section 6.8.21)enum {    AV1_ONLY_4X4        = 0,    AV1_TX_MODE_LARGEST = 1,    AV1_TX_MODE_SELECT  = 2,}; // 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 */