tor-browser

The Tor Browser
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tables.c (53918B)


      1 /*
      2 * Copyright © 2018-2021, VideoLAN and dav1d authors
      3 * Copyright © 2018, Two Orioles, LLC
      4 * All rights reserved.
      5 *
      6 * Redistribution and use in source and binary forms, with or without
      7 * modification, are permitted provided that the following conditions are met:
      8 *
      9 * 1. Redistributions of source code must retain the above copyright notice, this
     10 *    list of conditions and the following disclaimer.
     11 *
     12 * 2. Redistributions in binary form must reproduce the above copyright notice,
     13 *    this list of conditions and the following disclaimer in the documentation
     14 *    and/or other materials provided with the distribution.
     15 *
     16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     19 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
     20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26 */
     27 
     28 #include "config.h"
     29 
     30 #include <stdint.h>
     31 
     32 #include "common/attributes.h"
     33 
     34 #include "src/levels.h"
     35 #include "src/tables.h"
     36 
     37 const uint8_t dav1d_al_part_ctx[2][N_BL_LEVELS][N_PARTITIONS] = {
     38    {
     39        // partitions:
     40        // none,  h,    v, split,  tts,  tbs,  tls,  trs,   h4,   v4
     41        { 0x00, 0x00, 0x10,   -1, 0x00, 0x10, 0x10, 0x10,   -1,   -1 }, // bl128
     42        { 0x10, 0x10, 0x18,   -1, 0x10, 0x18, 0x18, 0x18, 0x10, 0x1c }, // bl64
     43        { 0x18, 0x18, 0x1c,   -1, 0x18, 0x1c, 0x1c, 0x1c, 0x18, 0x1e }, // bl32
     44        { 0x1c, 0x1c, 0x1e,   -1, 0x1c, 0x1e, 0x1e, 0x1e, 0x1c, 0x1f }, // bl16
     45        { 0x1e, 0x1e, 0x1f, 0x1f,   -1,   -1,   -1,   -1,   -1,   -1 }, // bl8
     46    }, {
     47        { 0x00, 0x10, 0x00,   -1, 0x10, 0x10, 0x00, 0x10,   -1,   -1 }, // bl128
     48        { 0x10, 0x18, 0x10,   -1, 0x18, 0x18, 0x10, 0x18, 0x1c, 0x10 }, // bl64
     49        { 0x18, 0x1c, 0x18,   -1, 0x1c, 0x1c, 0x18, 0x1c, 0x1e, 0x18 }, // bl32
     50        { 0x1c, 0x1e, 0x1c,   -1, 0x1e, 0x1e, 0x1c, 0x1e, 0x1f, 0x1c }, // bl16
     51        { 0x1e, 0x1f, 0x1e, 0x1f,   -1,   -1,   -1,   -1,   -1,   -1 }, // bl8
     52    }
     53 };
     54 
     55 const uint8_t /* enum BlockSize */
     56    dav1d_block_sizes[N_BL_LEVELS][N_PARTITIONS][2] =
     57 {
     58    [BL_128X128] = {
     59        [PARTITION_NONE]           = { BS_128x128 },
     60        [PARTITION_H]              = { BS_128x64 },
     61        [PARTITION_V]              = { BS_64x128 },
     62        [PARTITION_T_TOP_SPLIT]    = { BS_64x64, BS_128x64 },
     63        [PARTITION_T_BOTTOM_SPLIT] = { BS_128x64, BS_64x64 },
     64        [PARTITION_T_LEFT_SPLIT]   = { BS_64x64, BS_64x128 },
     65        [PARTITION_T_RIGHT_SPLIT]  = { BS_64x128, BS_64x64 },
     66    }, [BL_64X64] = {
     67        [PARTITION_NONE]           = { BS_64x64 },
     68        [PARTITION_H]              = { BS_64x32 },
     69        [PARTITION_V]              = { BS_32x64 },
     70        [PARTITION_T_TOP_SPLIT]    = { BS_32x32, BS_64x32 },
     71        [PARTITION_T_BOTTOM_SPLIT] = { BS_64x32, BS_32x32 },
     72        [PARTITION_T_LEFT_SPLIT]   = { BS_32x32, BS_32x64 },
     73        [PARTITION_T_RIGHT_SPLIT]  = { BS_32x64, BS_32x32 },
     74        [PARTITION_H4]             = { BS_64x16 },
     75        [PARTITION_V4]             = { BS_16x64 },
     76    }, [BL_32X32] = {
     77        [PARTITION_NONE]           = { BS_32x32 },
     78        [PARTITION_H]              = { BS_32x16 },
     79        [PARTITION_V]              = { BS_16x32 },
     80        [PARTITION_T_TOP_SPLIT]    = { BS_16x16, BS_32x16 },
     81        [PARTITION_T_BOTTOM_SPLIT] = { BS_32x16, BS_16x16 },
     82        [PARTITION_T_LEFT_SPLIT]   = { BS_16x16, BS_16x32 },
     83        [PARTITION_T_RIGHT_SPLIT]  = { BS_16x32, BS_16x16 },
     84        [PARTITION_H4]             = { BS_32x8  },
     85        [PARTITION_V4]             = { BS_8x32  },
     86    }, [BL_16X16] = {
     87        [PARTITION_NONE]           = { BS_16x16 },
     88        [PARTITION_H]              = { BS_16x8  },
     89        [PARTITION_V]              = { BS_8x16  },
     90        [PARTITION_T_TOP_SPLIT]    = { BS_8x8,   BS_16x8  },
     91        [PARTITION_T_BOTTOM_SPLIT] = { BS_16x8,  BS_8x8   },
     92        [PARTITION_T_LEFT_SPLIT]   = { BS_8x8,   BS_8x16  },
     93        [PARTITION_T_RIGHT_SPLIT]  = { BS_8x16,  BS_8x8   },
     94        [PARTITION_H4]             = { BS_16x4  },
     95        [PARTITION_V4]             = { BS_4x16  },
     96    }, [BL_8X8] = {
     97        [PARTITION_NONE]           = { BS_8x8   },
     98        [PARTITION_H]              = { BS_8x4   },
     99        [PARTITION_V]              = { BS_4x8   },
    100        [PARTITION_SPLIT]          = { BS_4x4   },
    101    }
    102 };
    103 
    104 const uint8_t dav1d_block_dimensions[N_BS_SIZES][4] = {
    105    [BS_128x128] = { 32, 32, 5, 5 },
    106    [BS_128x64]  = { 32, 16, 5, 4 },
    107    [BS_64x128]  = { 16, 32, 4, 5 },
    108    [BS_64x64]   = { 16, 16, 4, 4 },
    109    [BS_64x32]   = { 16,  8, 4, 3 },
    110    [BS_64x16]   = { 16,  4, 4, 2 },
    111    [BS_32x64]   = {  8, 16, 3, 4 },
    112    [BS_32x32]   = {  8,  8, 3, 3 },
    113    [BS_32x16]   = {  8,  4, 3, 2 },
    114    [BS_32x8]    = {  8,  2, 3, 1 },
    115    [BS_16x64]   = {  4, 16, 2, 4 },
    116    [BS_16x32]   = {  4,  8, 2, 3 },
    117    [BS_16x16]   = {  4,  4, 2, 2 },
    118    [BS_16x8]    = {  4,  2, 2, 1 },
    119    [BS_16x4]    = {  4,  1, 2, 0 },
    120    [BS_8x32]    = {  2,  8, 1, 3 },
    121    [BS_8x16]    = {  2,  4, 1, 2 },
    122    [BS_8x8]     = {  2,  2, 1, 1 },
    123    [BS_8x4]     = {  2,  1, 1, 0 },
    124    [BS_4x16]    = {  1,  4, 0, 2 },
    125    [BS_4x8]     = {  1,  2, 0, 1 },
    126    [BS_4x4]     = {  1,  1, 0, 0 },
    127 };
    128 
    129 const TxfmInfo dav1d_txfm_dimensions[N_RECT_TX_SIZES] = {
    130    [ TX_4X4]   = { .w = 1, .h = 1, .lw = 0, .lh = 0,
    131                    .min = 0, .max = 0, .ctx = 0 },
    132    [ TX_8X8]   = { .w = 2, .h = 2, .lw = 1, .lh = 1,
    133                    .min = 1, .max = 1, .sub = TX_4X4, .ctx = 1 },
    134    [ TX_16X16] = { .w = 4, .h = 4, .lw = 2, .lh = 2,
    135                    .min = 2, .max = 2, .sub = TX_8X8, .ctx = 2 },
    136    [ TX_32X32] = { .w = 8, .h = 8, .lw = 3, .lh = 3,
    137                    .min = 3, .max = 3, .sub = TX_16X16, .ctx = 3 },
    138    [ TX_64X64] = { .w = 16, .h = 16, .lw = 4, .lh = 4,
    139                    .min = 4, .max = 4, .sub = TX_32X32, .ctx = 4 },
    140    [RTX_4X8]   = { .w = 1, .h = 2, .lw = 0, .lh = 1,
    141                    .min = 0, .max = 1, .sub = TX_4X4, .ctx = 1 },
    142    [RTX_8X4]   = { .w = 2, .h = 1, .lw = 1, .lh = 0,
    143                    .min = 0, .max = 1, .sub = TX_4X4, .ctx = 1 },
    144    [RTX_8X16]  = { .w = 2, .h = 4, .lw = 1, .lh = 2,
    145                    .min = 1, .max = 2, .sub = TX_8X8, .ctx = 2 },
    146    [RTX_16X8]  = { .w = 4, .h = 2, .lw = 2, .lh = 1,
    147                    .min = 1, .max = 2, .sub = TX_8X8, .ctx = 2 },
    148    [RTX_16X32] = { .w = 4, .h = 8, .lw = 2, .lh = 3,
    149                    .min = 2, .max = 3, .sub = TX_16X16, .ctx = 3 },
    150    [RTX_32X16] = { .w = 8, .h = 4, .lw = 3, .lh = 2,
    151                    .min = 2, .max = 3, .sub = TX_16X16, .ctx = 3 },
    152    [RTX_32X64] = { .w = 8, .h = 16, .lw = 3, .lh = 4,
    153                    .min = 3, .max = 4, .sub = TX_32X32, .ctx = 4 },
    154    [RTX_64X32] = { .w = 16, .h = 8, .lw = 4, .lh = 3,
    155                    .min = 3, .max = 4, .sub = TX_32X32, .ctx = 4 },
    156    [RTX_4X16]  = { .w = 1, .h = 4, .lw = 0, .lh = 2,
    157                    .min = 0, .max = 2, .sub = RTX_4X8, .ctx = 1 },
    158    [RTX_16X4]  = { .w = 4, .h = 1, .lw = 2, .lh = 0,
    159                    .min = 0, .max = 2, .sub = RTX_8X4, .ctx = 1 },
    160    [RTX_8X32]  = { .w = 2, .h = 8, .lw = 1, .lh = 3,
    161                    .min = 1, .max = 3, .sub = RTX_8X16, .ctx = 2 },
    162    [RTX_32X8]  = { .w = 8, .h = 2, .lw = 3, .lh = 1,
    163                    .min = 1, .max = 3, .sub = RTX_16X8, .ctx = 2 },
    164    [RTX_16X64] = { .w = 4, .h = 16, .lw = 2, .lh = 4,
    165                    .min = 2, .max = 4, .sub = RTX_16X32, .ctx = 3 },
    166    [RTX_64X16] = { .w = 16, .h = 4, .lw = 4, .lh = 2,
    167                    .min = 2, .max = 4, .sub = RTX_32X16, .ctx = 3 },
    168 };
    169 
    170 const uint8_t /* enum (Rect)TxfmSize */
    171    dav1d_max_txfm_size_for_bs[N_BS_SIZES][4 /* y, 420, 422, 444 */] =
    172 {
    173    [BS_128x128] = {  TX_64X64,  TX_32X32,  TX_32X32,  TX_32X32 },
    174    [BS_128x64]  = {  TX_64X64,  TX_32X32,  TX_32X32,  TX_32X32 },
    175    [BS_64x128]  = {  TX_64X64,  TX_32X32,       0,    TX_32X32 },
    176    [BS_64x64]   = {  TX_64X64,  TX_32X32,  TX_32X32,  TX_32X32 },
    177    [BS_64x32]   = { RTX_64X32, RTX_32X16,  TX_32X32,  TX_32X32 },
    178    [BS_64x16]   = { RTX_64X16, RTX_32X8,  RTX_32X16, RTX_32X16 },
    179    [BS_32x64]   = { RTX_32X64, RTX_16X32,       0,    TX_32X32 },
    180    [BS_32x32]   = {  TX_32X32,  TX_16X16, RTX_16X32,  TX_32X32 },
    181    [BS_32x16]   = { RTX_32X16, RTX_16X8,   TX_16X16, RTX_32X16 },
    182    [BS_32x8]    = { RTX_32X8,  RTX_16X4,  RTX_16X8,  RTX_32X8  },
    183    [BS_16x64]   = { RTX_16X64, RTX_8X32,        0,   RTX_16X32 },
    184    [BS_16x32]   = { RTX_16X32, RTX_8X16,        0,   RTX_16X32 },
    185    [BS_16x16]   = {  TX_16X16,  TX_8X8,   RTX_8X16,   TX_16X16 },
    186    [BS_16x8]    = { RTX_16X8,  RTX_8X4,    TX_8X8,   RTX_16X8  },
    187    [BS_16x4]    = { RTX_16X4,  RTX_8X4,   RTX_8X4,   RTX_16X4  },
    188    [BS_8x32]    = { RTX_8X32,  RTX_4X16,       0,    RTX_8X32  },
    189    [BS_8x16]    = { RTX_8X16,  RTX_4X8,        0,    RTX_8X16  },
    190    [BS_8x8]     = {  TX_8X8,    TX_4X4,   RTX_4X8,    TX_8X8   },
    191    [BS_8x4]     = { RTX_8X4,    TX_4X4,    TX_4X4,   RTX_8X4   },
    192    [BS_4x16]    = { RTX_4X16,  RTX_4X8,        0,    RTX_4X16  },
    193    [BS_4x8]     = { RTX_4X8,    TX_4X4,        0,    RTX_4X8   },
    194    [BS_4x4]     = {  TX_4X4,    TX_4X4,    TX_4X4,    TX_4X4   },
    195 };
    196 
    197 const uint8_t /* enum TxfmType */
    198    dav1d_txtp_from_uvmode[N_UV_INTRA_PRED_MODES] =
    199 {
    200    [DC_PRED]              = DCT_DCT,
    201    [VERT_PRED]            = ADST_DCT,
    202    [HOR_PRED]             = DCT_ADST,
    203    [DIAG_DOWN_LEFT_PRED]  = DCT_DCT,
    204    [DIAG_DOWN_RIGHT_PRED] = ADST_ADST,
    205    [VERT_RIGHT_PRED]      = ADST_DCT,
    206    [HOR_DOWN_PRED]        = DCT_ADST,
    207    [HOR_UP_PRED]          = DCT_ADST,
    208    [VERT_LEFT_PRED]       = ADST_DCT,
    209    [SMOOTH_PRED]          = ADST_ADST,
    210    [SMOOTH_V_PRED]        = ADST_DCT,
    211    [SMOOTH_H_PRED]        = DCT_ADST,
    212    [PAETH_PRED]           = ADST_ADST,
    213 };
    214 
    215 const uint8_t /* enum InterPredMode */
    216    dav1d_comp_inter_pred_modes[N_COMP_INTER_PRED_MODES][2] =
    217 {
    218    [NEARESTMV_NEARESTMV] = { NEARESTMV, NEARESTMV },
    219    [NEARMV_NEARMV]       = { NEARMV,    NEARMV    },
    220    [NEWMV_NEWMV]         = { NEWMV,     NEWMV     },
    221    [GLOBALMV_GLOBALMV]   = { GLOBALMV,  GLOBALMV  },
    222    [NEWMV_NEARESTMV]     = { NEWMV,     NEARESTMV },
    223    [NEWMV_NEARMV]        = { NEWMV,     NEARMV    },
    224    [NEARESTMV_NEWMV]     = { NEARESTMV, NEWMV     },
    225    [NEARMV_NEWMV]        = { NEARMV,    NEWMV     },
    226 };
    227 
    228 const uint8_t dav1d_partition_type_count[N_BL_LEVELS] = {
    229    [BL_128X128] = N_PARTITIONS - 3,
    230    [BL_64X64]   = N_PARTITIONS - 1,
    231    [BL_32X32]   = N_PARTITIONS - 1,
    232    [BL_16X16]   = N_PARTITIONS - 1,
    233    [BL_8X8]     = N_SUB8X8_PARTITIONS - 1,
    234 };
    235 
    236 const uint8_t /* enum TxfmType */ dav1d_tx_types_per_set[40] = {
    237    /* Intra2 */
    238    IDTX, DCT_DCT, ADST_ADST, ADST_DCT, DCT_ADST,
    239    /* Intra1 */
    240    IDTX, DCT_DCT, V_DCT, H_DCT, ADST_ADST, ADST_DCT, DCT_ADST,
    241    /* Inter2 */
    242    IDTX, V_DCT, H_DCT, DCT_DCT, ADST_DCT, DCT_ADST, FLIPADST_DCT,
    243    DCT_FLIPADST, ADST_ADST, FLIPADST_FLIPADST, ADST_FLIPADST, FLIPADST_ADST,
    244    /* Inter1 */
    245    IDTX, V_DCT, H_DCT, V_ADST, H_ADST, V_FLIPADST, H_FLIPADST,
    246    DCT_DCT, ADST_DCT, DCT_ADST, FLIPADST_DCT, DCT_FLIPADST,
    247    ADST_ADST, FLIPADST_FLIPADST, ADST_FLIPADST, FLIPADST_ADST,
    248 };
    249 
    250 const uint8_t dav1d_ymode_size_context[N_BS_SIZES] = {
    251    [BS_128x128] = 3,
    252    [BS_128x64]  = 3,
    253    [BS_64x128]  = 3,
    254    [BS_64x64]   = 3,
    255    [BS_64x32]   = 3,
    256    [BS_64x16]   = 2,
    257    [BS_32x64]   = 3,
    258    [BS_32x32]   = 3,
    259    [BS_32x16]   = 2,
    260    [BS_32x8 ]   = 1,
    261    [BS_16x64]   = 2,
    262    [BS_16x32]   = 2,
    263    [BS_16x16]   = 2,
    264    [BS_16x8 ]   = 1,
    265    [BS_16x4 ]   = 0,
    266    [BS_8x32 ]   = 1,
    267    [BS_8x16 ]   = 1,
    268    [BS_8x8  ]   = 1,
    269    [BS_8x4  ]   = 0,
    270    [BS_4x16 ]   = 0,
    271    [BS_4x8  ]   = 0,
    272    [BS_4x4  ]   = 0,
    273 };
    274 
    275 const uint8_t dav1d_lo_ctx_offsets[3][5][5] = {
    276    { /* w == h */
    277        {  0,  1,  6,  6, 21 },
    278        {  1,  6,  6, 21, 21 },
    279        {  6,  6, 21, 21, 21 },
    280        {  6, 21, 21, 21, 21 },
    281        { 21, 21, 21, 21, 21 },
    282    }, { /* w > h */
    283        {  0, 16,  6,  6, 21 },
    284        { 16, 16,  6, 21, 21 },
    285        { 16, 16, 21, 21, 21 },
    286        { 16, 16, 21, 21, 21 },
    287        { 16, 16, 21, 21, 21 },
    288    }, { /* w < h */
    289        {  0, 11, 11, 11, 11 },
    290        { 11, 11, 11, 11, 11 },
    291        {  6,  6, 21, 21, 21 },
    292        {  6, 21, 21, 21, 21 },
    293        { 21, 21, 21, 21, 21 },
    294    },
    295 };
    296 
    297 const uint8_t dav1d_skip_ctx[5][5] = {
    298    { 1, 2, 2, 2, 3 },
    299    { 2, 4, 4, 4, 5 },
    300    { 2, 4, 4, 4, 5 },
    301    { 2, 4, 4, 4, 5 },
    302    { 3, 5, 5, 5, 6 },
    303 };
    304 
    305 const uint8_t /* enum TxClass */ dav1d_tx_type_class[N_TX_TYPES_PLUS_LL] = {
    306    [DCT_DCT]           = TX_CLASS_2D,
    307    [ADST_DCT]          = TX_CLASS_2D,
    308    [DCT_ADST]          = TX_CLASS_2D,
    309    [ADST_ADST]         = TX_CLASS_2D,
    310    [FLIPADST_DCT]      = TX_CLASS_2D,
    311    [DCT_FLIPADST]      = TX_CLASS_2D,
    312    [FLIPADST_FLIPADST] = TX_CLASS_2D,
    313    [ADST_FLIPADST]     = TX_CLASS_2D,
    314    [FLIPADST_ADST]     = TX_CLASS_2D,
    315    [IDTX]              = TX_CLASS_2D,
    316    [V_DCT]             = TX_CLASS_V,
    317    [H_DCT]             = TX_CLASS_H,
    318    [V_ADST]            = TX_CLASS_V,
    319    [H_ADST]            = TX_CLASS_H,
    320    [V_FLIPADST]        = TX_CLASS_V,
    321    [H_FLIPADST]        = TX_CLASS_H,
    322    [WHT_WHT]           = TX_CLASS_2D,
    323 };
    324 
    325 const uint8_t /* enum Filter2d */ dav1d_filter_2d[DAV1D_N_FILTERS][DAV1D_N_FILTERS] = {
    326    [DAV1D_FILTER_8TAP_REGULAR] = {
    327        [DAV1D_FILTER_8TAP_REGULAR] = FILTER_2D_8TAP_REGULAR,
    328        [DAV1D_FILTER_8TAP_SHARP]   = FILTER_2D_8TAP_REGULAR_SHARP,
    329        [DAV1D_FILTER_8TAP_SMOOTH]  = FILTER_2D_8TAP_REGULAR_SMOOTH,
    330    }, [DAV1D_FILTER_8TAP_SHARP] = {
    331        [DAV1D_FILTER_8TAP_REGULAR] = FILTER_2D_8TAP_SHARP_REGULAR,
    332        [DAV1D_FILTER_8TAP_SHARP]   = FILTER_2D_8TAP_SHARP,
    333        [DAV1D_FILTER_8TAP_SMOOTH]  = FILTER_2D_8TAP_SHARP_SMOOTH,
    334    }, [DAV1D_FILTER_8TAP_SMOOTH] = {
    335        [DAV1D_FILTER_8TAP_REGULAR] = FILTER_2D_8TAP_SMOOTH_REGULAR,
    336        [DAV1D_FILTER_8TAP_SHARP]   = FILTER_2D_8TAP_SMOOTH_SHARP,
    337        [DAV1D_FILTER_8TAP_SMOOTH]  = FILTER_2D_8TAP_SMOOTH,
    338    }, [DAV1D_FILTER_BILINEAR] = {
    339        [DAV1D_FILTER_BILINEAR]     = FILTER_2D_BILINEAR,
    340    }
    341 };
    342 
    343 const uint8_t /* enum Dav1dFilterMode */ dav1d_filter_dir[N_2D_FILTERS][2] = {
    344    [FILTER_2D_8TAP_REGULAR]        = { DAV1D_FILTER_8TAP_REGULAR, DAV1D_FILTER_8TAP_REGULAR },
    345    [FILTER_2D_8TAP_REGULAR_SMOOTH] = { DAV1D_FILTER_8TAP_SMOOTH,  DAV1D_FILTER_8TAP_REGULAR },
    346    [FILTER_2D_8TAP_REGULAR_SHARP]  = { DAV1D_FILTER_8TAP_SHARP,   DAV1D_FILTER_8TAP_REGULAR },
    347    [FILTER_2D_8TAP_SHARP_REGULAR]  = { DAV1D_FILTER_8TAP_REGULAR, DAV1D_FILTER_8TAP_SHARP   },
    348    [FILTER_2D_8TAP_SHARP_SMOOTH]   = { DAV1D_FILTER_8TAP_SMOOTH,  DAV1D_FILTER_8TAP_SHARP   },
    349    [FILTER_2D_8TAP_SHARP]          = { DAV1D_FILTER_8TAP_SHARP,   DAV1D_FILTER_8TAP_SHARP   },
    350    [FILTER_2D_8TAP_SMOOTH_REGULAR] = { DAV1D_FILTER_8TAP_REGULAR, DAV1D_FILTER_8TAP_SMOOTH  },
    351    [FILTER_2D_8TAP_SMOOTH]         = { DAV1D_FILTER_8TAP_SMOOTH,  DAV1D_FILTER_8TAP_SMOOTH  },
    352    [FILTER_2D_8TAP_SMOOTH_SHARP]   = { DAV1D_FILTER_8TAP_SHARP,   DAV1D_FILTER_8TAP_SMOOTH  },
    353    [FILTER_2D_BILINEAR]            = { DAV1D_FILTER_BILINEAR,     DAV1D_FILTER_BILINEAR     },
    354 };
    355 
    356 const uint8_t dav1d_filter_mode_to_y_mode[5] = {
    357    DC_PRED, VERT_PRED, HOR_PRED, HOR_DOWN_PRED, DC_PRED
    358 };
    359 
    360 const uint8_t dav1d_intra_mode_context[N_INTRA_PRED_MODES] = {
    361    [DC_PRED]              = 0,
    362    [VERT_PRED]            = 1,
    363    [HOR_PRED]             = 2,
    364    [DIAG_DOWN_LEFT_PRED]  = 3,
    365    [DIAG_DOWN_RIGHT_PRED] = 4,
    366    [VERT_RIGHT_PRED]      = 4,
    367    [HOR_DOWN_PRED]        = 4,
    368    [HOR_UP_PRED]          = 4,
    369    [VERT_LEFT_PRED]       = 3,
    370    [SMOOTH_PRED]          = 0,
    371    [SMOOTH_V_PRED]        = 1,
    372    [SMOOTH_H_PRED]        = 2,
    373    [PAETH_PRED]           = 0,
    374 };
    375 
    376 const uint8_t dav1d_wedge_ctx_lut[N_BS_SIZES] = {
    377    [BS_32x32] = 6,
    378    [BS_32x16] = 5,
    379    [BS_32x8]  = 8,
    380    [BS_16x32] = 4,
    381    [BS_16x16] = 3,
    382    [BS_16x8]  = 2,
    383    [BS_8x32]  = 7,
    384    [BS_8x16]  = 1,
    385    [BS_8x8]   = 0,
    386 };
    387 
    388 const Dav1dWarpedMotionParams dav1d_default_wm_params = {
    389    .type = DAV1D_WM_TYPE_IDENTITY,
    390    .matrix = {
    391        0, 0, 1 << 16,
    392        0, 0, 1 << 16,
    393    },
    394    .u.p.alpha = 0,
    395    .u.p.beta = 0,
    396    .u.p.gamma = 0,
    397    .u.p.delta = 0,
    398 };
    399 
    400 const int8_t dav1d_cdef_directions[2 + 8 + 2 /* dir */][2 /* pass */] = {
    401    {  1 * 12 + 0,  2 * 12 + 0 }, // 6
    402    {  1 * 12 + 0,  2 * 12 - 1 }, // 7
    403    { -1 * 12 + 1, -2 * 12 + 2 }, // 0
    404    {  0 * 12 + 1, -1 * 12 + 2 }, // 1
    405    {  0 * 12 + 1,  0 * 12 + 2 }, // 2
    406    {  0 * 12 + 1,  1 * 12 + 2 }, // 3
    407    {  1 * 12 + 1,  2 * 12 + 2 }, // 4
    408    {  1 * 12 + 0,  2 * 12 + 1 }, // 5
    409    {  1 * 12 + 0,  2 * 12 + 0 }, // 6
    410    {  1 * 12 + 0,  2 * 12 - 1 }, // 7
    411    { -1 * 12 + 1, -2 * 12 + 2 }, // 0
    412    {  0 * 12 + 1, -1 * 12 + 2 }, // 1
    413 };
    414 
    415 const uint16_t ALIGN(dav1d_sgr_params[16][2], 4) = {
    416    { 140, 3236 }, { 112, 2158 }, {  93, 1618 }, {  80, 1438 },
    417    {  70, 1295 }, {  58, 1177 }, {  47, 1079 }, {  37,  996 },
    418    {  30,  925 }, {  25,  863 }, {   0, 2589 }, {   0, 1618 },
    419    {   0, 1177 }, {   0,  925 }, {  56,    0 }, {  22,    0 },
    420 };
    421 
    422 ATTR_MCMODEL_SMALL
    423 const uint8_t ALIGN(dav1d_sgr_x_by_x[256], 64) = {
    424    255, 128,  85,  64,  51,  43,  37,  32,  28,  26,  23,  21,  20,  18,  17,
    425     16,  15,  14,  13,  13,  12,  12,  11,  11,  10,  10,   9,   9,   9,   9,
    426      8,   8,   8,   8,   7,   7,   7,   7,   7,   6,   6,   6,   6,   6,   6,
    427      6,   5,   5,   5,   5,   5,   5,   5,   5,   5,   5,   4,   4,   4,   4,
    428      4,   4,   4,   4,   4,   4,   4,   4,   4,   4,   4,   4,   4,   3,   3,
    429      3,   3,   3,   3,   3,   3,   3,   3,   3,   3,   3,   3,   3,   3,   3,
    430      3,   3,   3,   3,   3,   3,   3,   3,   3,   3,   3,   3,   2,   2,   2,
    431      2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,
    432      2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,
    433      2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,
    434      2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,   2,
    435      2,   2,   2,   2,   2,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,
    436      1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,
    437      1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,
    438      1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,
    439      1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,
    440      1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,   1,
    441      0
    442 };
    443 
    444 ATTR_MCMODEL_SMALL
    445 const int8_t ALIGN(dav1d_mc_subpel_filters[6][15][8], 8) = {
    446    [DAV1D_FILTER_8TAP_REGULAR] = {
    447        {   0,   1,  -3,  63,   4,  -1,   0,   0 },
    448        {   0,   1,  -5,  61,   9,  -2,   0,   0 },
    449        {   0,   1,  -6,  58,  14,  -4,   1,   0 },
    450        {   0,   1,  -7,  55,  19,  -5,   1,   0 },
    451        {   0,   1,  -7,  51,  24,  -6,   1,   0 },
    452        {   0,   1,  -8,  47,  29,  -6,   1,   0 },
    453        {   0,   1,  -7,  42,  33,  -6,   1,   0 },
    454        {   0,   1,  -7,  38,  38,  -7,   1,   0 },
    455        {   0,   1,  -6,  33,  42,  -7,   1,   0 },
    456        {   0,   1,  -6,  29,  47,  -8,   1,   0 },
    457        {   0,   1,  -6,  24,  51,  -7,   1,   0 },
    458        {   0,   1,  -5,  19,  55,  -7,   1,   0 },
    459        {   0,   1,  -4,  14,  58,  -6,   1,   0 },
    460        {   0,   0,  -2,   9,  61,  -5,   1,   0 },
    461        {   0,   0,  -1,   4,  63,  -3,   1,   0 }
    462    }, [DAV1D_FILTER_8TAP_SMOOTH] = {
    463        {   0,   1,  14,  31,  17,   1,   0,   0 },
    464        {   0,   0,  13,  31,  18,   2,   0,   0 },
    465        {   0,   0,  11,  31,  20,   2,   0,   0 },
    466        {   0,   0,  10,  30,  21,   3,   0,   0 },
    467        {   0,   0,   9,  29,  22,   4,   0,   0 },
    468        {   0,   0,   8,  28,  23,   5,   0,   0 },
    469        {   0,  -1,   8,  27,  24,   6,   0,   0 },
    470        {   0,  -1,   7,  26,  26,   7,  -1,   0 },
    471        {   0,   0,   6,  24,  27,   8,  -1,   0 },
    472        {   0,   0,   5,  23,  28,   8,   0,   0 },
    473        {   0,   0,   4,  22,  29,   9,   0,   0 },
    474        {   0,   0,   3,  21,  30,  10,   0,   0 },
    475        {   0,   0,   2,  20,  31,  11,   0,   0 },
    476        {   0,   0,   2,  18,  31,  13,   0,   0 },
    477        {   0,   0,   1,  17,  31,  14,   1,   0 }
    478    }, [DAV1D_FILTER_8TAP_SHARP] = {
    479        {  -1,   1,  -3,  63,   4,  -1,   1,   0 },
    480        {  -1,   3,  -6,  62,   8,  -3,   2,  -1 },
    481        {  -1,   4,  -9,  60,  13,  -5,   3,  -1 },
    482        {  -2,   5, -11,  58,  19,  -7,   3,  -1 },
    483        {  -2,   5, -11,  54,  24,  -9,   4,  -1 },
    484        {  -2,   5, -12,  50,  30, -10,   4,  -1 },
    485        {  -2,   5, -12,  45,  35, -11,   5,  -1 },
    486        {  -2,   6, -12,  40,  40, -12,   6,  -2 },
    487        {  -1,   5, -11,  35,  45, -12,   5,  -2 },
    488        {  -1,   4, -10,  30,  50, -12,   5,  -2 },
    489        {  -1,   4,  -9,  24,  54, -11,   5,  -2 },
    490        {  -1,   3,  -7,  19,  58, -11,   5,  -2 },
    491        {  -1,   3,  -5,  13,  60,  -9,   4,  -1 },
    492        {  -1,   2,  -3,   8,  62,  -6,   3,  -1 },
    493        {   0,   1,  -1,   4,  63,  -3,   1,  -1 }
    494    /* width <= 4 */
    495    }, [3 + DAV1D_FILTER_8TAP_REGULAR] = {
    496        {   0,   0,  -2,  63,   4,  -1,   0,   0 },
    497        {   0,   0,  -4,  61,   9,  -2,   0,   0 },
    498        {   0,   0,  -5,  58,  14,  -3,   0,   0 },
    499        {   0,   0,  -6,  55,  19,  -4,   0,   0 },
    500        {   0,   0,  -6,  51,  24,  -5,   0,   0 },
    501        {   0,   0,  -7,  47,  29,  -5,   0,   0 },
    502        {   0,   0,  -6,  42,  33,  -5,   0,   0 },
    503        {   0,   0,  -6,  38,  38,  -6,   0,   0 },
    504        {   0,   0,  -5,  33,  42,  -6,   0,   0 },
    505        {   0,   0,  -5,  29,  47,  -7,   0,   0 },
    506        {   0,   0,  -5,  24,  51,  -6,   0,   0 },
    507        {   0,   0,  -4,  19,  55,  -6,   0,   0 },
    508        {   0,   0,  -3,  14,  58,  -5,   0,   0 },
    509        {   0,   0,  -2,   9,  61,  -4,   0,   0 },
    510        {   0,   0,  -1,   4,  63,  -2,   0,   0 }
    511    }, [3 + DAV1D_FILTER_8TAP_SMOOTH] = {
    512        {   0,   0,  15,  31,  17,   1,   0,   0 },
    513        {   0,   0,  13,  31,  18,   2,   0,   0 },
    514        {   0,   0,  11,  31,  20,   2,   0,   0 },
    515        {   0,   0,  10,  30,  21,   3,   0,   0 },
    516        {   0,   0,   9,  29,  22,   4,   0,   0 },
    517        {   0,   0,   8,  28,  23,   5,   0,   0 },
    518        {   0,   0,   7,  27,  24,   6,   0,   0 },
    519        {   0,   0,   6,  26,  26,   6,   0,   0 },
    520        {   0,   0,   6,  24,  27,   7,   0,   0 },
    521        {   0,   0,   5,  23,  28,   8,   0,   0 },
    522        {   0,   0,   4,  22,  29,   9,   0,   0 },
    523        {   0,   0,   3,  21,  30,  10,   0,   0 },
    524        {   0,   0,   2,  20,  31,  11,   0,   0 },
    525        {   0,   0,   2,  18,  31,  13,   0,   0 },
    526        {   0,   0,   1,  17,  31,  15,   0,   0 }
    527    /* Bilin scaled being very rarely used, add a new table entry
    528     * and use the put/prep_8tap_scaled code, thus acting as a
    529     * scaled bilinear filter. */
    530    }, [5] = {
    531        {   0,   0,   0, 60,   4,   0,   0,   0 },
    532        {   0,   0,   0, 56,   8,   0,   0,   0 },
    533        {   0,   0,   0, 52,  12,   0,   0,   0 },
    534        {   0,   0,   0, 48,  16,   0,   0,   0 },
    535        {   0,   0,   0, 44,  20,   0,   0,   0 },
    536        {   0,   0,   0, 40,  24,   0,   0,   0 },
    537        {   0,   0,   0, 36,  28,   0,   0,   0 },
    538        {   0,   0,   0, 32,  32,   0,   0,   0 },
    539        {   0,   0,   0, 28,  36,   0,   0,   0 },
    540        {   0,   0,   0, 24,  40,   0,   0,   0 },
    541        {   0,   0,   0, 20,  44,   0,   0,   0 },
    542        {   0,   0,   0, 16,  48,   0,   0,   0 },
    543        {   0,   0,   0, 12,  52,   0,   0,   0 },
    544        {   0,   0,   0,  8,  56,   0,   0,   0 },
    545        {   0,   0,   0,  4,  60,   0,   0,   0 }
    546    }
    547 };
    548 
    549 ATTR_MCMODEL_SMALL
    550 const int8_t ALIGN(dav1d_mc_warp_filter[193][8], 8) = {
    551    // [-1, 0)
    552    { 0,   0, 127,   1,   0, 0, 0, 0 }, { 0,  -1, 127,   2,   0, 0, 0, 0 },
    553    { 1,  -3, 127,   4, - 1, 0, 0, 0 }, { 1,  -4, 126,   6,  -2, 1, 0, 0 },
    554    { 1,  -5, 126,   8, - 3, 1, 0, 0 }, { 1,  -6, 125,  11,  -4, 1, 0, 0 },
    555    { 1,  -7, 124,  13, - 4, 1, 0, 0 }, { 2,  -8, 123,  15,  -5, 1, 0, 0 },
    556    { 2,  -9, 122,  18, - 6, 1, 0, 0 }, { 2, -10, 121,  20,  -6, 1, 0, 0 },
    557    { 2, -11, 120,  22, - 7, 2, 0, 0 }, { 2, -12, 119,  25,  -8, 2, 0, 0 },
    558    { 3, -13, 117,  27, - 8, 2, 0, 0 }, { 3, -13, 116,  29,  -9, 2, 0, 0 },
    559    { 3, -14, 114,  32, -10, 3, 0, 0 }, { 3, -15, 113,  35, -10, 2, 0, 0 },
    560    { 3, -15, 111,  37, -11, 3, 0, 0 }, { 3, -16, 109,  40, -11, 3, 0, 0 },
    561    { 3, -16, 108,  42, -12, 3, 0, 0 }, { 4, -17, 106,  45, -13, 3, 0, 0 },
    562    { 4, -17, 104,  47, -13, 3, 0, 0 }, { 4, -17, 102,  50, -14, 3, 0, 0 },
    563    { 4, -17, 100,  52, -14, 3, 0, 0 }, { 4, -18,  98,  55, -15, 4, 0, 0 },
    564    { 4, -18,  96,  58, -15, 3, 0, 0 }, { 4, -18,  94,  60, -16, 4, 0, 0 },
    565    { 4, -18,  91,  63, -16, 4, 0, 0 }, { 4, -18,  89,  65, -16, 4, 0, 0 },
    566    { 4, -18,  87,  68, -17, 4, 0, 0 }, { 4, -18,  85,  70, -17, 4, 0, 0 },
    567    { 4, -18,  82,  73, -17, 4, 0, 0 }, { 4, -18,  80,  75, -17, 4, 0, 0 },
    568    { 4, -18,  78,  78, -18, 4, 0, 0 }, { 4, -17,  75,  80, -18, 4, 0, 0 },
    569    { 4, -17,  73,  82, -18, 4, 0, 0 }, { 4, -17,  70,  85, -18, 4, 0, 0 },
    570    { 4, -17,  68,  87, -18, 4, 0, 0 }, { 4, -16,  65,  89, -18, 4, 0, 0 },
    571    { 4, -16,  63,  91, -18, 4, 0, 0 }, { 4, -16,  60,  94, -18, 4, 0, 0 },
    572    { 3, -15,  58,  96, -18, 4, 0, 0 }, { 4, -15,  55,  98, -18, 4, 0, 0 },
    573    { 3, -14,  52, 100, -17, 4, 0, 0 }, { 3, -14,  50, 102, -17, 4, 0, 0 },
    574    { 3, -13,  47, 104, -17, 4, 0, 0 }, { 3, -13,  45, 106, -17, 4, 0, 0 },
    575    { 3, -12,  42, 108, -16, 3, 0, 0 }, { 3, -11,  40, 109, -16, 3, 0, 0 },
    576    { 3, -11,  37, 111, -15, 3, 0, 0 }, { 2, -10,  35, 113, -15, 3, 0, 0 },
    577    { 3, -10,  32, 114, -14, 3, 0, 0 }, { 2, - 9,  29, 116, -13, 3, 0, 0 },
    578    { 2,  -8,  27, 117, -13, 3, 0, 0 }, { 2, - 8,  25, 119, -12, 2, 0, 0 },
    579    { 2,  -7,  22, 120, -11, 2, 0, 0 }, { 1, - 6,  20, 121, -10, 2, 0, 0 },
    580    { 1,  -6,  18, 122, - 9, 2, 0, 0 }, { 1, - 5,  15, 123, - 8, 2, 0, 0 },
    581    { 1,  -4,  13, 124, - 7, 1, 0, 0 }, { 1, - 4,  11, 125, - 6, 1, 0, 0 },
    582    { 1,  -3,   8, 126, - 5, 1, 0, 0 }, { 1, - 2,   6, 126, - 4, 1, 0, 0 },
    583    { 0,  -1,   4, 127, - 3, 1, 0, 0 }, { 0,   0,   2, 127, - 1, 0, 0, 0 },
    584    // [0, 1)
    585    {  0, 0,   0, 127,   1,   0, 0,  0 }, {  0, 0,  -1, 127,   2,   0, 0,  0 },
    586    {  0, 1,  -3, 127,   4,  -2, 1,  0 }, {  0, 1,  -5, 127,   6,  -2, 1,  0 },
    587    {  0, 2,  -6, 126,   8,  -3, 1,  0 }, { -1, 2,  -7, 126,  11,  -4, 2, -1 },
    588    { -1, 3,  -8, 125,  13,  -5, 2, -1 }, { -1, 3, -10, 124,  16,  -6, 3, -1 },
    589    { -1, 4, -11, 123,  18,  -7, 3, -1 }, { -1, 4, -12, 122,  20,  -7, 3, -1 },
    590    { -1, 4, -13, 121,  23,  -8, 3, -1 }, { -2, 5, -14, 120,  25,  -9, 4, -1 },
    591    { -1, 5, -15, 119,  27, -10, 4, -1 }, { -1, 5, -16, 118,  30, -11, 4, -1 },
    592    { -2, 6, -17, 116,  33, -12, 5, -1 }, { -2, 6, -17, 114,  35, -12, 5, -1 },
    593    { -2, 6, -18, 113,  38, -13, 5, -1 }, { -2, 7, -19, 111,  41, -14, 6, -2 },
    594    { -2, 7, -19, 110,  43, -15, 6, -2 }, { -2, 7, -20, 108,  46, -15, 6, -2 },
    595    { -2, 7, -20, 106,  49, -16, 6, -2 }, { -2, 7, -21, 104,  51, -16, 7, -2 },
    596    { -2, 7, -21, 102,  54, -17, 7, -2 }, { -2, 8, -21, 100,  56, -18, 7, -2 },
    597    { -2, 8, -22,  98,  59, -18, 7, -2 }, { -2, 8, -22,  96,  62, -19, 7, -2 },
    598    { -2, 8, -22,  94,  64, -19, 7, -2 }, { -2, 8, -22,  91,  67, -20, 8, -2 },
    599    { -2, 8, -22,  89,  69, -20, 8, -2 }, { -2, 8, -22,  87,  72, -21, 8, -2 },
    600    { -2, 8, -21,  84,  74, -21, 8, -2 }, { -2, 8, -22,  82,  77, -21, 8, -2 },
    601    { -2, 8, -21,  79,  79, -21, 8, -2 }, { -2, 8, -21,  77,  82, -22, 8, -2 },
    602    { -2, 8, -21,  74,  84, -21, 8, -2 }, { -2, 8, -21,  72,  87, -22, 8, -2 },
    603    { -2, 8, -20,  69,  89, -22, 8, -2 }, { -2, 8, -20,  67,  91, -22, 8, -2 },
    604    { -2, 7, -19,  64,  94, -22, 8, -2 }, { -2, 7, -19,  62,  96, -22, 8, -2 },
    605    { -2, 7, -18,  59,  98, -22, 8, -2 }, { -2, 7, -18,  56, 100, -21, 8, -2 },
    606    { -2, 7, -17,  54, 102, -21, 7, -2 }, { -2, 7, -16,  51, 104, -21, 7, -2 },
    607    { -2, 6, -16,  49, 106, -20, 7, -2 }, { -2, 6, -15,  46, 108, -20, 7, -2 },
    608    { -2, 6, -15,  43, 110, -19, 7, -2 }, { -2, 6, -14,  41, 111, -19, 7, -2 },
    609    { -1, 5, -13,  38, 113, -18, 6, -2 }, { -1, 5, -12,  35, 114, -17, 6, -2 },
    610    { -1, 5, -12,  33, 116, -17, 6, -2 }, { -1, 4, -11,  30, 118, -16, 5, -1 },
    611    { -1, 4, -10,  27, 119, -15, 5, -1 }, { -1, 4,  -9,  25, 120, -14, 5, -2 },
    612    { -1, 3,  -8,  23, 121, -13, 4, -1 }, { -1, 3,  -7,  20, 122, -12, 4, -1 },
    613    { -1, 3,  -7,  18, 123, -11, 4, -1 }, { -1, 3,  -6,  16, 124, -10, 3, -1 },
    614    { -1, 2,  -5,  13, 125,  -8, 3, -1 }, { -1, 2,  -4,  11, 126,  -7, 2, -1 },
    615    {  0, 1,  -3,   8, 126,  -6, 2,  0 }, {  0, 1,  -2,   6, 127,  -5, 1,  0 },
    616    {  0, 1,  -2,   4, 127,  -3, 1,  0 }, {  0, 0,   0,   2, 127,  -1, 0,  0 },
    617    // [1, 2)
    618    { 0, 0, 0,   1, 127,   0,   0, 0 }, { 0, 0, 0,  -1, 127,   2,   0, 0 },
    619    { 0, 0, 1,  -3, 127,   4,  -1, 0 }, { 0, 0, 1,  -4, 126,   6,  -2, 1 },
    620    { 0, 0, 1,  -5, 126,   8,  -3, 1 }, { 0, 0, 1,  -6, 125,  11,  -4, 1 },
    621    { 0, 0, 1,  -7, 124,  13,  -4, 1 }, { 0, 0, 2,  -8, 123,  15,  -5, 1 },
    622    { 0, 0, 2,  -9, 122,  18,  -6, 1 }, { 0, 0, 2, -10, 121,  20,  -6, 1 },
    623    { 0, 0, 2, -11, 120,  22,  -7, 2 }, { 0, 0, 2, -12, 119,  25,  -8, 2 },
    624    { 0, 0, 3, -13, 117,  27,  -8, 2 }, { 0, 0, 3, -13, 116,  29,  -9, 2 },
    625    { 0, 0, 3, -14, 114,  32, -10, 3 }, { 0, 0, 3, -15, 113,  35, -10, 2 },
    626    { 0, 0, 3, -15, 111,  37, -11, 3 }, { 0, 0, 3, -16, 109,  40, -11, 3 },
    627    { 0, 0, 3, -16, 108,  42, -12, 3 }, { 0, 0, 4, -17, 106,  45, -13, 3 },
    628    { 0, 0, 4, -17, 104,  47, -13, 3 }, { 0, 0, 4, -17, 102,  50, -14, 3 },
    629    { 0, 0, 4, -17, 100,  52, -14, 3 }, { 0, 0, 4, -18,  98,  55, -15, 4 },
    630    { 0, 0, 4, -18,  96,  58, -15, 3 }, { 0, 0, 4, -18,  94,  60, -16, 4 },
    631    { 0, 0, 4, -18,  91,  63, -16, 4 }, { 0, 0, 4, -18,  89,  65, -16, 4 },
    632    { 0, 0, 4, -18,  87,  68, -17, 4 }, { 0, 0, 4, -18,  85,  70, -17, 4 },
    633    { 0, 0, 4, -18,  82,  73, -17, 4 }, { 0, 0, 4, -18,  80,  75, -17, 4 },
    634    { 0, 0, 4, -18,  78,  78, -18, 4 }, { 0, 0, 4, -17,  75,  80, -18, 4 },
    635    { 0, 0, 4, -17,  73,  82, -18, 4 }, { 0, 0, 4, -17,  70,  85, -18, 4 },
    636    { 0, 0, 4, -17,  68,  87, -18, 4 }, { 0, 0, 4, -16,  65,  89, -18, 4 },
    637    { 0, 0, 4, -16,  63,  91, -18, 4 }, { 0, 0, 4, -16,  60,  94, -18, 4 },
    638    { 0, 0, 3, -15,  58,  96, -18, 4 }, { 0, 0, 4, -15,  55,  98, -18, 4 },
    639    { 0, 0, 3, -14,  52, 100, -17, 4 }, { 0, 0, 3, -14,  50, 102, -17, 4 },
    640    { 0, 0, 3, -13,  47, 104, -17, 4 }, { 0, 0, 3, -13,  45, 106, -17, 4 },
    641    { 0, 0, 3, -12,  42, 108, -16, 3 }, { 0, 0, 3, -11,  40, 109, -16, 3 },
    642    { 0, 0, 3, -11,  37, 111, -15, 3 }, { 0, 0, 2, -10,  35, 113, -15, 3 },
    643    { 0, 0, 3, -10,  32, 114, -14, 3 }, { 0, 0, 2,  -9,  29, 116, -13, 3 },
    644    { 0, 0, 2,  -8,  27, 117, -13, 3 }, { 0, 0, 2,  -8,  25, 119, -12, 2 },
    645    { 0, 0, 2,  -7,  22, 120, -11, 2 }, { 0, 0, 1,  -6,  20, 121, -10, 2 },
    646    { 0, 0, 1,  -6,  18, 122,  -9, 2 }, { 0, 0, 1,  -5,  15, 123,  -8, 2 },
    647    { 0, 0, 1,  -4,  13, 124,  -7, 1 }, { 0, 0, 1,  -4,  11, 125,  -6, 1 },
    648    { 0, 0, 1,  -3,   8, 126,  -5, 1 }, { 0, 0, 1,  -2,   6, 126,  -4, 1 },
    649    { 0, 0, 0,  -1,   4, 127,  -3, 1 }, { 0, 0, 0,   0,   2, 127,  -1, 0 },
    650    // dummy (replicate row index 191)
    651    { 0, 0, 0,   0,   2, 127,  -1, 0 },
    652 };
    653 
    654 ATTR_MCMODEL_SMALL
    655 const int8_t ALIGN(dav1d_resize_filter[64][8], 8) = {
    656    { 0,  0,  0, -128,    0,  0,  0, 0 }, { 0,  0,  1, -128,   -2,  1,  0, 0 },
    657    { 0, -1,  3, -127,   -4,  2, -1, 0 }, { 0, -1,  4, -127,   -6,  3, -1, 0 },
    658    { 0, -2,  6, -126,   -8,  3, -1, 0 }, { 0, -2,  7, -125,  -11,  4, -1, 0 },
    659    { 1, -2,  8, -125,  -13,  5, -2, 0 }, { 1, -3,  9, -124,  -15,  6, -2, 0 },
    660    { 1, -3, 10, -123,  -18,  6, -2, 1 }, { 1, -3, 11, -122,  -20,  7, -3, 1 },
    661    { 1, -4, 12, -121,  -22,  8, -3, 1 }, { 1, -4, 13, -120,  -25,  9, -3, 1 },
    662    { 1, -4, 14, -118,  -28,  9, -3, 1 }, { 1, -4, 15, -117,  -30, 10, -4, 1 },
    663    { 1, -5, 16, -116,  -32, 11, -4, 1 }, { 1, -5, 16, -114,  -35, 12, -4, 1 },
    664    { 1, -5, 17, -112,  -38, 12, -4, 1 }, { 1, -5, 18, -111,  -40, 13, -5, 1 },
    665    { 1, -5, 18, -109,  -43, 14, -5, 1 }, { 1, -6, 19, -107,  -45, 14, -5, 1 },
    666    { 1, -6, 19, -105,  -48, 15, -5, 1 }, { 1, -6, 19, -103,  -51, 16, -5, 1 },
    667    { 1, -6, 20, -101,  -53, 16, -6, 1 }, { 1, -6, 20,  -99,  -56, 17, -6, 1 },
    668    { 1, -6, 20,  -97,  -58, 17, -6, 1 }, { 1, -6, 20,  -95,  -61, 18, -6, 1 },
    669    { 2, -7, 20,  -93,  -64, 18, -6, 2 }, { 2, -7, 20,  -91,  -66, 19, -6, 1 },
    670    { 2, -7, 20,  -88,  -69, 19, -6, 1 }, { 2, -7, 20,  -86,  -71, 19, -6, 1 },
    671    { 2, -7, 20,  -84,  -74, 20, -7, 2 }, { 2, -7, 20,  -81,  -76, 20, -7, 1 },
    672    { 2, -7, 20,  -79,  -79, 20, -7, 2 }, { 1, -7, 20,  -76,  -81, 20, -7, 2 },
    673    { 2, -7, 20,  -74,  -84, 20, -7, 2 }, { 1, -6, 19,  -71,  -86, 20, -7, 2 },
    674    { 1, -6, 19,  -69,  -88, 20, -7, 2 }, { 1, -6, 19,  -66,  -91, 20, -7, 2 },
    675    { 2, -6, 18,  -64,  -93, 20, -7, 2 }, { 1, -6, 18,  -61,  -95, 20, -6, 1 },
    676    { 1, -6, 17,  -58,  -97, 20, -6, 1 }, { 1, -6, 17,  -56,  -99, 20, -6, 1 },
    677    { 1, -6, 16,  -53, -101, 20, -6, 1 }, { 1, -5, 16,  -51, -103, 19, -6, 1 },
    678    { 1, -5, 15,  -48, -105, 19, -6, 1 }, { 1, -5, 14,  -45, -107, 19, -6, 1 },
    679    { 1, -5, 14,  -43, -109, 18, -5, 1 }, { 1, -5, 13,  -40, -111, 18, -5, 1 },
    680    { 1, -4, 12,  -38, -112, 17, -5, 1 }, { 1, -4, 12,  -35, -114, 16, -5, 1 },
    681    { 1, -4, 11,  -32, -116, 16, -5, 1 }, { 1, -4, 10,  -30, -117, 15, -4, 1 },
    682    { 1, -3,  9,  -28, -118, 14, -4, 1 }, { 1, -3,  9,  -25, -120, 13, -4, 1 },
    683    { 1, -3,  8,  -22, -121, 12, -4, 1 }, { 1, -3,  7,  -20, -122, 11, -3, 1 },
    684    { 1, -2,  6,  -18, -123, 10, -3, 1 }, { 0, -2,  6,  -15, -124,  9, -3, 1 },
    685    { 0, -2,  5,  -13, -125,  8, -2, 1 }, { 0, -1,  4,  -11, -125,  7, -2, 0 },
    686    { 0, -1,  3,   -8, -126,  6, -2, 0 }, { 0, -1,  3,   -6, -127,  4, -1, 0 },
    687    { 0, -1,  2,   -4, -127,  3, -1, 0 }, { 0,  0,  1,   -2, -128,  1,  0, 0 },
    688 };
    689 
    690 const uint8_t ALIGN(dav1d_sm_weights[128], 16) = {
    691    // Unused, because we always offset by bs, which is at least 2.
    692      0,   0,
    693    // bs = 2
    694    255, 128,
    695    // bs = 4
    696    255, 149,  85,  64,
    697    // bs = 8
    698    255, 197, 146, 105,  73,  50,  37,  32,
    699    // bs = 16
    700    255, 225, 196, 170, 145, 123, 102,  84,
    701     68,  54,  43,  33,  26,  20,  17,  16,
    702    // bs = 32
    703    255, 240, 225, 210, 196, 182, 169, 157,
    704    145, 133, 122, 111, 101,  92,  83,  74,
    705     66,  59,  52,  45,  39,  34,  29,  25,
    706     21,  17,  14,  12,  10,   9,   8,   8,
    707    // bs = 64
    708    255, 248, 240, 233, 225, 218, 210, 203,
    709    196, 189, 182, 176, 169, 163, 156, 150,
    710    144, 138, 133, 127, 121, 116, 111, 106,
    711    101,  96,  91,  86,  82,  77,  73,  69,
    712     65,  61,  57,  54,  50,  47,  44,  41,
    713     38,  35,  32,  29,  27,  25,  22,  20,
    714     18,  16,  15,  13,  12,  10,   9,   8,
    715      7,   6,   6,   5,   5,   4,   4,   4
    716 };
    717 
    718 ATTR_MCMODEL_SMALL
    719 const uint16_t dav1d_dr_intra_derivative[44] = {
    720    // Values that are 0 will never be used
    721          0,    // Angles:
    722    1023, 0,    //  3,  93, 183
    723     547,       //  6,  96, 186
    724     372, 0, 0, //  9,  99, 189
    725     273,       // 14, 104, 194
    726     215, 0,    // 17, 107, 197
    727     178,       // 20, 110, 200
    728     151, 0,    // 23, 113, 203 (113 & 203 are base angles)
    729     132,       // 26, 116, 206
    730     116, 0,    // 29, 119, 209
    731     102, 0,    // 32, 122, 212
    732      90,       // 36, 126, 216
    733      80, 0,    // 39, 129, 219
    734      71,       // 42, 132, 222
    735      64, 0,    // 45, 135, 225 (45 & 135 are base angles)
    736      57,       // 48, 138, 228
    737      51, 0,    // 51, 141, 231
    738      45, 0,    // 54, 144, 234
    739      40,       // 58, 148, 238
    740      35, 0,    // 61, 151, 241
    741      31,       // 64, 154, 244
    742      27, 0,    // 67, 157, 247 (67 & 157 are base angles)
    743      23,       // 70, 160, 250
    744      19, 0,    // 73, 163, 253
    745      15, 0,    // 76, 166, 256
    746      11, 0,    // 81, 171, 261
    747       7,       // 84, 174, 264
    748       3        // 87, 177, 267
    749 };
    750 
    751 #if ARCH_X86
    752 #define F(idx, f0, f1, f2, f3, f4, f5, f6) \
    753    [2*idx+0]  = f0, [2*idx+1]  = f1,      \
    754    [2*idx+16] = f2, [2*idx+17] = f3,      \
    755    [2*idx+32] = f4, [2*idx+33] = f5,      \
    756    [2*idx+48] = f6
    757 #else
    758 #define F(idx, f0, f1, f2, f3, f4, f5, f6) \
    759    [1*idx+0]  = f0, [1*idx+8]  = f1,      \
    760    [1*idx+16] = f2, [1*idx+24] = f3,      \
    761    [1*idx+32] = f4, [1*idx+40] = f5,      \
    762    [1*idx+48] = f6
    763 #endif
    764 ATTR_MCMODEL_SMALL
    765 const int8_t ALIGN(dav1d_filter_intra_taps[5][64], 64) = {
    766    {
    767        F( 0,  -6, 10,  0,  0,  0, 12,  0 ),
    768        F( 1,  -5,  2, 10,  0,  0,  9,  0 ),
    769        F( 2,  -3,  1,  1, 10,  0,  7,  0 ),
    770        F( 3,  -3,  1,  1,  2, 10,  5,  0 ),
    771        F( 4,  -4,  6,  0,  0,  0,  2, 12 ),
    772        F( 5,  -3,  2,  6,  0,  0,  2,  9 ),
    773        F( 6,  -3,  2,  2,  6,  0,  2,  7 ),
    774        F( 7,  -3,  1,  2,  2,  6,  3,  5 ),
    775    }, {
    776        F( 0, -10, 16,  0,  0,  0, 10,  0 ),
    777        F( 1,  -6,  0, 16,  0,  0,  6,  0 ),
    778        F( 2,  -4,  0,  0, 16,  0,  4,  0 ),
    779        F( 3,  -2,  0,  0,  0, 16,  2,  0 ),
    780        F( 4, -10, 16,  0,  0,  0,  0, 10 ),
    781        F( 5,  -6,  0, 16,  0,  0,  0,  6 ),
    782        F( 6,  -4,  0,  0, 16,  0,  0,  4 ),
    783        F( 7,  -2,  0,  0,  0, 16,  0,  2 ),
    784    }, {
    785        F( 0,  -8,  8,  0,  0,  0, 16,  0 ),
    786        F( 1,  -8,  0,  8,  0,  0, 16,  0 ),
    787        F( 2,  -8,  0,  0,  8,  0, 16,  0 ),
    788        F( 3,  -8,  0,  0,  0,  8, 16,  0 ),
    789        F( 4,  -4,  4,  0,  0,  0,  0, 16 ),
    790        F( 5,  -4,  0,  4,  0,  0,  0, 16 ),
    791        F( 6,  -4,  0,  0,  4,  0,  0, 16 ),
    792        F( 7,  -4,  0,  0,  0,  4,  0, 16 ),
    793    }, {
    794        F( 0,  -2,  8,  0,  0,  0, 10,  0 ),
    795        F( 1,  -1,  3,  8,  0,  0,  6,  0 ),
    796        F( 2,  -1,  2,  3,  8,  0,  4,  0 ),
    797        F( 3,   0,  1,  2,  3,  8,  2,  0 ),
    798        F( 4,  -1,  4,  0,  0,  0,  3, 10 ),
    799        F( 5,  -1,  3,  4,  0,  0,  4,  6 ),
    800        F( 6,  -1,  2,  3,  4,  0,  4,  4 ),
    801        F( 7,  -1,  2,  2,  3,  4,  3,  3 ),
    802    }, {
    803        F( 0, -12, 14,  0,  0,  0, 14,  0 ),
    804        F( 1, -10,  0, 14,  0,  0, 12,  0 ),
    805        F( 2,  -9,  0,  0, 14,  0, 11,  0 ),
    806        F( 3,  -8,  0,  0,  0, 14, 10,  0 ),
    807        F( 4, -10, 12,  0,  0,  0,  0, 14 ),
    808        F( 5,  -9,  1, 12,  0,  0,  0, 12 ),
    809        F( 6,  -8,  0,  0, 12,  0,  1, 11 ),
    810        F( 7,  -7,  0,  0,  1, 12,  1,  9 ),
    811    }
    812 };
    813 
    814 const uint8_t ALIGN(dav1d_obmc_masks[64], 16) = {
    815    /* Unused */
    816     0,  0,
    817    /* 2 */
    818    19,  0,
    819    /* 4 */
    820    25, 14,  5,  0,
    821    /* 8 */
    822    28, 22, 16, 11,  7,  3,  0,  0,
    823    /* 16 */
    824    30, 27, 24, 21, 18, 15, 12, 10,  8,  6,  4,  3,  0,  0,  0,  0,
    825    /* 32 */
    826    31, 29, 28, 26, 24, 23, 21, 20, 19, 17, 16, 14, 13, 12, 11,  9,
    827     8,  7,  6,  5,  4,  4,  3,  2,  0,  0,  0,  0,  0,  0,  0,  0,
    828 };
    829 
    830 // Taken from the spec. Range is [-2048, 2047], mean is 0 and stddev is 512
    831 ATTR_MCMODEL_SMALL
    832 const int16_t dav1d_gaussian_sequence[2048] = {
    833    56,    568,   -180,  172,   124,   -84,   172,   -64,   -900,  24,   820,
    834    224,   1248,  996,   272,   -8,    -916,  -388,  -732,  -104,  -188, 800,
    835    112,   -652,  -320,  -376,  140,   -252,  492,   -168,  44,    -788, 588,
    836    -584,  500,   -228,  12,    680,   272,   -476,  972,   -100,  652,  368,
    837    432,   -196,  -720,  -192,  1000,  -332,  652,   -136,  -552,  -604, -4,
    838    192,   -220,  -136,  1000,  -52,   372,   -96,   -624,  124,   -24,  396,
    839    540,   -12,   -104,  640,   464,   244,   -208,  -84,   368,   -528, -740,
    840    248,   -968,  -848,  608,   376,   -60,   -292,  -40,   -156,  252,  -292,
    841    248,   224,   -280,  400,   -244,  244,   -60,   76,    -80,   212,  532,
    842    340,   128,   -36,   824,   -352,  -60,   -264,  -96,   -612,  416,  -704,
    843    220,   -204,  640,   -160,  1220,  -408,  900,   336,   20,    -336, -96,
    844    -792,  304,   48,    -28,   -1232, -1172, -448,  104,   -292,  -520, 244,
    845    60,    -948,  0,     -708,  268,   108,   356,   -548,  488,   -344, -136,
    846    488,   -196,  -224,  656,   -236,  -1128, 60,    4,     140,   276,  -676,
    847    -376,  168,   -108,  464,   8,     564,   64,    240,   308,   -300, -400,
    848    -456,  -136,  56,    120,   -408,  -116,  436,   504,   -232,  328,  844,
    849    -164,  -84,   784,   -168,  232,   -224,  348,   -376,  128,   568,  96,
    850    -1244, -288,  276,   848,   832,   -360,  656,   464,   -384,  -332, -356,
    851    728,   -388,  160,   -192,  468,   296,   224,   140,   -776,  -100, 280,
    852    4,     196,   44,    -36,   -648,  932,   16,    1428,  28,    528,  808,
    853    772,   20,    268,   88,    -332,  -284,  124,   -384,  -448,  208,  -228,
    854    -1044, -328,  660,   380,   -148,  -300,  588,   240,   540,   28,   136,
    855    -88,   -436,  256,   296,   -1000, 1400,  0,     -48,   1056,  -136, 264,
    856    -528,  -1108, 632,   -484,  -592,  -344,  796,   124,   -668,  -768, 388,
    857    1296,  -232,  -188,  -200,  -288,  -4,    308,   100,   -168,  256,  -500,
    858    204,   -508,  648,   -136,  372,   -272,  -120,  -1004, -552,  -548, -384,
    859    548,   -296,  428,   -108,  -8,    -912,  -324,  -224,  -88,   -112, -220,
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    999    124,   156,   180,   -252,  944,   -924,  -772,  -520,  -428,  -624, 300,
   1000    -212,  -1144, 32,    -724,  800,   -1128, -212,  -1288, -848,  180,  -416,
   1001    440,   192,   -576,  -792,  -76,   -1080, 80,    -532,  -352,  -132, 380,
   1002    -820,  148,   1112,  128,   164,   456,   700,   -924,  144,   -668, -384,
   1003    648,   -832,  508,   552,   -52,   -100,  -656,  208,   -568,  748,  -88,
   1004    680,   232,   300,   192,   -408,  -1012, -152,  -252,  -268,  272,  -876,
   1005    -664,  -648,  -332,  -136,  16,    12,    1152,  -28,   332,   -536, 320,
   1006    -672,  -460,  -316,  532,   -260,  228,   -40,   1052,  -816,  180,  88,
   1007    -496,  -556,  -672,  -368,  428,   92,    356,   404,   -408,  252,  196,
   1008    -176,  -556,  792,   268,   32,    372,   40,    96,    -332,  328,  120,
   1009    372,   -900,  -40,   472,   -264,  -592,  952,   128,   656,   112,  664,
   1010    -232,  420,   4,     -344,  -464,  556,   244,   -416,  -32,   252,  0,
   1011    -412,  188,   -696,  508,   -476,  324,   -1096, 656,   -312,  560,  264,
   1012    -136,  304,   160,   -64,   -580,  248,   336,   -720,  560,   -348, -288,
   1013    -276,  -196,  -500,  852,   -544,  -236,  -1128, -992,  -776,  116,  56,
   1014    52,    860,   884,   212,   -12,   168,   1020,  512,   -552,  924,  -148,
   1015    716,   188,   164,   -340,  -520,  -184,  880,   -152,  -680,  -208, -1156,
   1016    -300,  -528,  -472,  364,   100,   -744,  -1056, -32,   540,   280,  144,
   1017    -676,  -32,   -232,  -280,  -224,  96,    568,   -76,   172,   148,  148,
   1018    104,   32,    -296,  -32,   788,   -80,   32,    -16,   280,   288,  944,
   1019    428,   -484
   1020 };