/*
 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
 *
 * This source code is subject to the terms of the BSD 2 Clause License and
 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
 * was not distributed with this source code in the LICENSE file, you can
 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
 * Media Patent License 1.0 was not distributed with this source code in the
 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
 */

#include <assert.h>
#include <math.h>
#include <stdio.h>
#include <string.h>

#include "aom_mem/aom_mem.h"

#include "av1/common/entropy.h"
#include "av1/common/pred_common.h"
#include "av1/common/scan.h"
#include "av1/common/seg_common.h"

#include "av1/encoder/cost.h"
#include "av1/encoder/encoder.h"
#if CONFIG_LV_MAP
#include "av1/encoder/encodetxb.h"
#endif
#include "av1/encoder/rdopt.h"
#include "av1/encoder/tokenize.h"

static const TOKENVALUE dct_cat_lt_10_value_tokens[] = {
  { 9, 63 }, { 9, 61 }, { 9, 59 }, { 9, 57 }, { 9, 55 }, { 9, 53 }, { 9, 51 },
  { 9, 49 }, { 9, 47 }, { 9, 45 }, { 9, 43 }, { 9, 41 }, { 9, 39 }, { 9, 37 },
  { 9, 35 }, { 9, 33 }, { 9, 31 }, { 9, 29 }, { 9, 27 }, { 9, 25 }, { 9, 23 },
  { 9, 21 }, { 9, 19 }, { 9, 17 }, { 9, 15 }, { 9, 13 }, { 9, 11 }, { 9, 9 },
  { 9, 7 },  { 9, 5 },  { 9, 3 },  { 9, 1 },  { 8, 31 }, { 8, 29 }, { 8, 27 },
  { 8, 25 }, { 8, 23 }, { 8, 21 }, { 8, 19 }, { 8, 17 }, { 8, 15 }, { 8, 13 },
  { 8, 11 }, { 8, 9 },  { 8, 7 },  { 8, 5 },  { 8, 3 },  { 8, 1 },  { 7, 15 },
  { 7, 13 }, { 7, 11 }, { 7, 9 },  { 7, 7 },  { 7, 5 },  { 7, 3 },  { 7, 1 },
  { 6, 7 },  { 6, 5 },  { 6, 3 },  { 6, 1 },  { 5, 3 },  { 5, 1 },  { 4, 1 },
  { 3, 1 },  { 2, 1 },  { 1, 1 },  { 0, 0 },  { 1, 0 },  { 2, 0 },  { 3, 0 },
  { 4, 0 },  { 5, 0 },  { 5, 2 },  { 6, 0 },  { 6, 2 },  { 6, 4 },  { 6, 6 },
  { 7, 0 },  { 7, 2 },  { 7, 4 },  { 7, 6 },  { 7, 8 },  { 7, 10 }, { 7, 12 },
  { 7, 14 }, { 8, 0 },  { 8, 2 },  { 8, 4 },  { 8, 6 },  { 8, 8 },  { 8, 10 },
  { 8, 12 }, { 8, 14 }, { 8, 16 }, { 8, 18 }, { 8, 20 }, { 8, 22 }, { 8, 24 },
  { 8, 26 }, { 8, 28 }, { 8, 30 }, { 9, 0 },  { 9, 2 },  { 9, 4 },  { 9, 6 },
  { 9, 8 },  { 9, 10 }, { 9, 12 }, { 9, 14 }, { 9, 16 }, { 9, 18 }, { 9, 20 },
  { 9, 22 }, { 9, 24 }, { 9, 26 }, { 9, 28 }, { 9, 30 }, { 9, 32 }, { 9, 34 },
  { 9, 36 }, { 9, 38 }, { 9, 40 }, { 9, 42 }, { 9, 44 }, { 9, 46 }, { 9, 48 },
  { 9, 50 }, { 9, 52 }, { 9, 54 }, { 9, 56 }, { 9, 58 }, { 9, 60 }, { 9, 62 }
};
const TOKENVALUE *av1_dct_cat_lt_10_value_tokens =
    dct_cat_lt_10_value_tokens +
    (sizeof(dct_cat_lt_10_value_tokens) / sizeof(*dct_cat_lt_10_value_tokens)) /
        2;
// The corresponding costs of the extrabits for the tokens in the above table
// are stored in the table below. The values are obtained from looking up the
// entry for the specified extrabits in the table corresponding to the token
// (as defined in cost element av1_extra_bits)
// e.g. {9, 63} maps to cat5_cost[63 >> 1], {1, 1} maps to sign_cost[1 >> 1]
static const int dct_cat_lt_10_value_cost[] = {
  3773, 3750, 3704, 3681, 3623, 3600, 3554, 3531, 3432, 3409, 3363, 3340, 3282,
  3259, 3213, 3190, 3136, 3113, 3067, 3044, 2986, 2963, 2917, 2894, 2795, 2772,
  2726, 2703, 2645, 2622, 2576, 2553, 3197, 3116, 3058, 2977, 2881, 2800, 2742,
  2661, 2615, 2534, 2476, 2395, 2299, 2218, 2160, 2079, 2566, 2427, 2334, 2195,
  2023, 1884, 1791, 1652, 1893, 1696, 1453, 1256, 1229, 864,  512,  512,  512,
  512,  0,    512,  512,  512,  512,  864,  1229, 1256, 1453, 1696, 1893, 1652,
  1791, 1884, 2023, 2195, 2334, 2427, 2566, 2079, 2160, 2218, 2299, 2395, 2476,
  2534, 2615, 2661, 2742, 2800, 2881, 2977, 3058, 3116, 3197, 2553, 2576, 2622,
  2645, 2703, 2726, 2772, 2795, 2894, 2917, 2963, 2986, 3044, 3067, 3113, 3136,
  3190, 3213, 3259, 3282, 3340, 3363, 3409, 3432, 3531, 3554, 3600, 3623, 3681,
  3704, 3750, 3773,
};
const int *av1_dct_cat_lt_10_value_cost =
    dct_cat_lt_10_value_cost +
    (sizeof(dct_cat_lt_10_value_cost) / sizeof(*dct_cat_lt_10_value_cost)) / 2;

// Array indices are identical to previously-existing CONTEXT_NODE indices
/* clang-format off */
const aom_tree_index av1_coef_tree[TREE_SIZE(ENTROPY_TOKENS)] = {
  -EOB_TOKEN, 2,                       // 0  = EOB
  -ZERO_TOKEN, 4,                      // 1  = ZERO
  -ONE_TOKEN, 6,                       // 2  = ONE
  8, 12,                               // 3  = LOW_VAL
  -TWO_TOKEN, 10,                      // 4  = TWO
  -THREE_TOKEN, -FOUR_TOKEN,           // 5  = THREE
  14, 16,                              // 6  = HIGH_LOW
  -CATEGORY1_TOKEN, -CATEGORY2_TOKEN,  // 7  = CAT_ONE
  18, 20,                              // 8  = CAT_THREEFOUR
  -CATEGORY3_TOKEN, -CATEGORY4_TOKEN,  // 9  = CAT_THREE
  -CATEGORY5_TOKEN, -CATEGORY6_TOKEN   // 10 = CAT_FIVE
};
/* clang-format on */

static const int16_t zero_cost[] = { 0 };
static const int16_t sign_cost[1] = { 512 };
static const int16_t cat1_cost[1 << 1] = { 864, 1229 };
static const int16_t cat2_cost[1 << 2] = { 1256, 1453, 1696, 1893 };
static const int16_t cat3_cost[1 << 3] = { 1652, 1791, 1884, 2023,
                                           2195, 2334, 2427, 2566 };
static const int16_t cat4_cost[1 << 4] = { 2079, 2160, 2218, 2299, 2395, 2476,
                                           2534, 2615, 2661, 2742, 2800, 2881,
                                           2977, 3058, 3116, 3197 };
static const int16_t cat5_cost[1 << 5] = {
  2553, 2576, 2622, 2645, 2703, 2726, 2772, 2795, 2894, 2917, 2963,
  2986, 3044, 3067, 3113, 3136, 3190, 3213, 3259, 3282, 3340, 3363,
  3409, 3432, 3531, 3554, 3600, 3623, 3681, 3704, 3750, 3773
};
const int16_t av1_cat6_low_cost[256] = {
  3378, 3390, 3401, 3413, 3435, 3447, 3458, 3470, 3517, 3529, 3540, 3552, 3574,
  3586, 3597, 3609, 3671, 3683, 3694, 3706, 3728, 3740, 3751, 3763, 3810, 3822,
  3833, 3845, 3867, 3879, 3890, 3902, 3973, 3985, 3996, 4008, 4030, 4042, 4053,
  4065, 4112, 4124, 4135, 4147, 4169, 4181, 4192, 4204, 4266, 4278, 4289, 4301,
  4323, 4335, 4346, 4358, 4405, 4417, 4428, 4440, 4462, 4474, 4485, 4497, 4253,
  4265, 4276, 4288, 4310, 4322, 4333, 4345, 4392, 4404, 4415, 4427, 4449, 4461,
  4472, 4484, 4546, 4558, 4569, 4581, 4603, 4615, 4626, 4638, 4685, 4697, 4708,
  4720, 4742, 4754, 4765, 4777, 4848, 4860, 4871, 4883, 4905, 4917, 4928, 4940,
  4987, 4999, 5010, 5022, 5044, 5056, 5067, 5079, 5141, 5153, 5164, 5176, 5198,
  5210, 5221, 5233, 5280, 5292, 5303, 5315, 5337, 5349, 5360, 5372, 4988, 5000,
  5011, 5023, 5045, 5057, 5068, 5080, 5127, 5139, 5150, 5162, 5184, 5196, 5207,
  5219, 5281, 5293, 5304, 5316, 5338, 5350, 5361, 5373, 5420, 5432, 5443, 5455,
  5477, 5489, 5500, 5512, 5583, 5595, 5606, 5618, 5640, 5652, 5663, 5675, 5722,
  5734, 5745, 5757, 5779, 5791, 5802, 5814, 5876, 5888, 5899, 5911, 5933, 5945,
  5956, 5968, 6015, 6027, 6038, 6050, 6072, 6084, 6095, 6107, 5863, 5875, 5886,
  5898, 5920, 5932, 5943, 5955, 6002, 6014, 6025, 6037, 6059, 6071, 6082, 6094,
  6156, 6168, 6179, 6191, 6213, 6225, 6236, 6248, 6295, 6307, 6318, 6330, 6352,
  6364, 6375, 6387, 6458, 6470, 6481, 6493, 6515, 6527, 6538, 6550, 6597, 6609,
  6620, 6632, 6654, 6666, 6677, 6689, 6751, 6763, 6774, 6786, 6808, 6820, 6831,
  6843, 6890, 6902, 6913, 6925, 6947, 6959, 6970, 6982
};
const int av1_cat6_high_cost[CAT6_HIGH_COST_ENTRIES] = {
  100,   2263,  2739,  4902,  3160,  5323,  5799,  7962,  3678,  5841,  6317,
  8480,  6738,  8901,  9377,  11540, 3678,  5841,  6317,  8480,  6738,  8901,
  9377,  11540, 7256,  9419,  9895,  12058, 10316, 12479, 12955, 15118, 3678,
  5841,  6317,  8480,  6738,  8901,  9377,  11540, 7256,  9419,  9895,  12058,
  10316, 12479, 12955, 15118, 7256,  9419,  9895,  12058, 10316, 12479, 12955,
  15118, 10834, 12997, 13473, 15636, 13894, 16057, 16533, 18696,
#if CONFIG_HIGHBITDEPTH
  4193,  6356,  6832,  8995,  7253,  9416,  9892,  12055, 7771,  9934,  10410,
  12573, 10831, 12994, 13470, 15633, 7771,  9934,  10410, 12573, 10831, 12994,
  13470, 15633, 11349, 13512, 13988, 16151, 14409, 16572, 17048, 19211, 7771,
  9934,  10410, 12573, 10831, 12994, 13470, 15633, 11349, 13512, 13988, 16151,
  14409, 16572, 17048, 19211, 11349, 13512, 13988, 16151, 14409, 16572, 17048,
  19211, 14927, 17090, 17566, 19729, 17987, 20150, 20626, 22789, 4193,  6356,
  6832,  8995,  7253,  9416,  9892,  12055, 7771,  9934,  10410, 12573, 10831,
  12994, 13470, 15633, 7771,  9934,  10410, 12573, 10831, 12994, 13470, 15633,
  11349, 13512, 13988, 16151, 14409, 16572, 17048, 19211, 7771,  9934,  10410,
  12573, 10831, 12994, 13470, 15633, 11349, 13512, 13988, 16151, 14409, 16572,
  17048, 19211, 11349, 13512, 13988, 16151, 14409, 16572, 17048, 19211, 14927,
  17090, 17566, 19729, 17987, 20150, 20626, 22789, 8286,  10449, 10925, 13088,
  11346, 13509, 13985, 16148, 11864, 14027, 14503, 16666, 14924, 17087, 17563,
  19726, 11864, 14027, 14503, 16666, 14924, 17087, 17563, 19726, 15442, 17605,
  18081, 20244, 18502, 20665, 21141, 23304, 11864, 14027, 14503, 16666, 14924,
  17087, 17563, 19726, 15442, 17605, 18081, 20244, 18502, 20665, 21141, 23304,
  15442, 17605, 18081, 20244, 18502, 20665, 21141, 23304, 19020, 21183, 21659,
  23822, 22080, 24243, 24719, 26882, 4193,  6356,  6832,  8995,  7253,  9416,
  9892,  12055, 7771,  9934,  10410, 12573, 10831, 12994, 13470, 15633, 7771,
  9934,  10410, 12573, 10831, 12994, 13470, 15633, 11349, 13512, 13988, 16151,
  14409, 16572, 17048, 19211, 7771,  9934,  10410, 12573, 10831, 12994, 13470,
  15633, 11349, 13512, 13988, 16151, 14409, 16572, 17048, 19211, 11349, 13512,
  13988, 16151, 14409, 16572, 17048, 19211, 14927, 17090, 17566, 19729, 17987,
  20150, 20626, 22789, 8286,  10449, 10925, 13088, 11346, 13509, 13985, 16148,
  11864, 14027, 14503, 16666, 14924, 17087, 17563, 19726, 11864, 14027, 14503,
  16666, 14924, 17087, 17563, 19726, 15442, 17605, 18081, 20244, 18502, 20665,
  21141, 23304, 11864, 14027, 14503, 16666, 14924, 17087, 17563, 19726, 15442,
  17605, 18081, 20244, 18502, 20665, 21141, 23304, 15442, 17605, 18081, 20244,
  18502, 20665, 21141, 23304, 19020, 21183, 21659, 23822, 22080, 24243, 24719,
  26882, 8286,  10449, 10925, 13088, 11346, 13509, 13985, 16148, 11864, 14027,
  14503, 16666, 14924, 17087, 17563, 19726, 11864, 14027, 14503, 16666, 14924,
  17087, 17563, 19726, 15442, 17605, 18081, 20244, 18502, 20665, 21141, 23304,
  11864, 14027, 14503, 16666, 14924, 17087, 17563, 19726, 15442, 17605, 18081,
  20244, 18502, 20665, 21141, 23304, 15442, 17605, 18081, 20244, 18502, 20665,
  21141, 23304, 19020, 21183, 21659, 23822, 22080, 24243, 24719, 26882, 12379,
  14542, 15018, 17181, 15439, 17602, 18078, 20241, 15957, 18120, 18596, 20759,
  19017, 21180, 21656, 23819, 15957, 18120, 18596, 20759, 19017, 21180, 21656,
  23819, 19535, 21698, 22174, 24337, 22595, 24758, 25234, 27397, 15957, 18120,
  18596, 20759, 19017, 21180, 21656, 23819, 19535, 21698, 22174, 24337, 22595,
  24758, 25234, 27397, 19535, 21698, 22174, 24337, 22595, 24758, 25234, 27397,
  23113, 25276, 25752, 27915, 26173, 28336, 28812, 30975, 4193,  6356,  6832,
  8995,  7253,  9416,  9892,  12055, 7771,  9934,  10410, 12573, 10831, 12994,
  13470, 15633, 7771,  9934,  10410, 12573, 10831, 12994, 13470, 15633, 11349,
  13512, 13988, 16151, 14409, 16572, 17048, 19211, 7771,  9934,  10410, 12573,
  10831, 12994, 13470, 15633, 11349, 13512, 13988, 16151, 14409, 16572, 17048,
  19211, 11349, 13512, 13988, 16151, 14409, 16572, 17048, 19211, 14927, 17090,
  17566, 19729, 17987, 20150, 20626, 22789, 8286,  10449, 10925, 13088, 11346,
  13509, 13985, 16148, 11864, 14027, 14503, 16666, 14924, 17087, 17563, 19726,
  11864, 14027, 14503, 16666, 14924, 17087, 17563, 19726, 15442, 17605, 18081,
  20244, 18502, 20665, 21141, 23304, 11864, 14027, 14503, 16666, 14924, 17087,
  17563, 19726, 15442, 17605, 18081, 20244, 18502, 20665, 21141, 23304, 15442,
  17605, 18081, 20244, 18502, 20665, 21141, 23304, 19020, 21183, 21659, 23822,
  22080, 24243, 24719, 26882, 8286,  10449, 10925, 13088, 11346, 13509, 13985,
  16148, 11864, 14027, 14503, 16666, 14924, 17087, 17563, 19726, 11864, 14027,
  14503, 16666, 14924, 17087, 17563, 19726, 15442, 17605, 18081, 20244, 18502,
  20665, 21141, 23304, 11864, 14027, 14503, 16666, 14924, 17087, 17563, 19726,
  15442, 17605, 18081, 20244, 18502, 20665, 21141, 23304, 15442, 17605, 18081,
  20244, 18502, 20665, 21141, 23304, 19020, 21183, 21659, 23822, 22080, 24243,
  24719, 26882, 12379, 14542, 15018, 17181, 15439, 17602, 18078, 20241, 15957,
  18120, 18596, 20759, 19017, 21180, 21656, 23819, 15957, 18120, 18596, 20759,
  19017, 21180, 21656, 23819, 19535, 21698, 22174, 24337, 22595, 24758, 25234,
  27397, 15957, 18120, 18596, 20759, 19017, 21180, 21656, 23819, 19535, 21698,
  22174, 24337, 22595, 24758, 25234, 27397, 19535, 21698, 22174, 24337, 22595,
  24758, 25234, 27397, 23113, 25276, 25752, 27915, 26173, 28336, 28812, 30975,
  8286,  10449, 10925, 13088, 11346, 13509, 13985, 16148, 11864, 14027, 14503,
  16666, 14924, 17087, 17563, 19726, 11864, 14027, 14503, 16666, 14924, 17087,
  17563, 19726, 15442, 17605, 18081, 20244, 18502, 20665, 21141, 23304, 11864,
  14027, 14503, 16666, 14924, 17087, 17563, 19726, 15442, 17605, 18081, 20244,
  18502, 20665, 21141, 23304, 15442, 17605, 18081, 20244, 18502, 20665, 21141,
  23304, 19020, 21183, 21659, 23822, 22080, 24243, 24719, 26882, 12379, 14542,
  15018, 17181, 15439, 17602, 18078, 20241, 15957, 18120, 18596, 20759, 19017,
  21180, 21656, 23819, 15957, 18120, 18596, 20759, 19017, 21180, 21656, 23819,
  19535, 21698, 22174, 24337, 22595, 24758, 25234, 27397, 15957, 18120, 18596,
  20759, 19017, 21180, 21656, 23819, 19535, 21698, 22174, 24337, 22595, 24758,
  25234, 27397, 19535, 21698, 22174, 24337, 22595, 24758, 25234, 27397, 23113,
  25276, 25752, 27915, 26173, 28336, 28812, 30975, 12379, 14542, 15018, 17181,
  15439, 17602, 18078, 20241, 15957, 18120, 18596, 20759, 19017, 21180, 21656,
  23819, 15957, 18120, 18596, 20759, 19017, 21180, 21656, 23819, 19535, 21698,
  22174, 24337, 22595, 24758, 25234, 27397, 15957, 18120, 18596, 20759, 19017,
  21180, 21656, 23819, 19535, 21698, 22174, 24337, 22595, 24758, 25234, 27397,
  19535, 21698, 22174, 24337, 22595, 24758, 25234, 27397, 23113, 25276, 25752,
  27915, 26173, 28336, 28812, 30975, 16472, 18635, 19111, 21274, 19532, 21695,
  22171, 24334, 20050, 22213, 22689, 24852, 23110, 25273, 25749, 27912, 20050,
  22213, 22689, 24852, 23110, 25273, 25749, 27912, 23628, 25791, 26267, 28430,
  26688, 28851, 29327, 31490, 20050, 22213, 22689, 24852, 23110, 25273, 25749,
  27912, 23628, 25791, 26267, 28430, 26688, 28851, 29327, 31490, 23628, 25791,
  26267, 28430, 26688, 28851, 29327, 31490, 27206, 29369, 29845, 32008, 30266,
  32429, 32905, 35068
#endif
};

const uint8_t av1_cat6_skipped_bits_discount[8] = {
  0, 3, 6, 9, 12, 18, 24, 30
};

const av1_extra_bit av1_extra_bits[ENTROPY_TOKENS] = {
  { 0, 0, 0, zero_cost },                        // ZERO_TOKEN
  { 0, 0, 1, sign_cost },                        // ONE_TOKEN
  { 0, 0, 2, sign_cost },                        // TWO_TOKEN
  { 0, 0, 3, sign_cost },                        // THREE_TOKEN
  { 0, 0, 4, sign_cost },                        // FOUR_TOKEN
  { av1_cat1_cdf, 1, CAT1_MIN_VAL, cat1_cost },  // CATEGORY1_TOKEN
  { av1_cat2_cdf, 2, CAT2_MIN_VAL, cat2_cost },  // CATEGORY2_TOKEN
  { av1_cat3_cdf, 3, CAT3_MIN_VAL, cat3_cost },  // CATEGORY3_TOKEN
  { av1_cat4_cdf, 4, CAT4_MIN_VAL, cat4_cost },  // CATEGORY4_TOKEN
  { av1_cat5_cdf, 5, CAT5_MIN_VAL, cat5_cost },  // CATEGORY5_TOKEN
  { av1_cat6_cdf, 18, CAT6_MIN_VAL, 0 },         // CATEGORY6_TOKEN
  { 0, 0, 0, zero_cost }                         // EOB_TOKEN
};

static void cost_coeffs_b(int plane, int block, int blk_row, int blk_col,
                          BLOCK_SIZE plane_bsize, TX_SIZE tx_size, void *arg) {
  struct tokenize_b_args *const args = arg;
  const AV1_COMP *const cpi = args->cpi;
  const AV1_COMMON *cm = &cpi->common;
  ThreadData *const td = args->td;
  MACROBLOCK *const x = &td->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
  MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
  struct macroblock_plane *p = &x->plane[plane];
  struct macroblockd_plane *pd = &xd->plane[plane];
  const PLANE_TYPE type = pd->plane_type;
  const TX_TYPE tx_type = av1_get_tx_type(type, xd, blk_row, blk_col, tx_size);
  const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
  const int rate = av1_cost_coeffs(
      cpi, x, plane, blk_row, blk_col, block, tx_size, scan_order,
      pd->above_context + blk_col, pd->left_context + blk_row, 0);
  args->this_rate += rate;
  (void)plane_bsize;
  av1_set_contexts(xd, pd, plane, tx_size, p->eobs[block] > 0, blk_col,
                   blk_row);
}

static void set_entropy_context_b(int plane, int block, int blk_row,
                                  int blk_col, BLOCK_SIZE plane_bsize,
                                  TX_SIZE tx_size, void *arg) {
  struct tokenize_b_args *const args = arg;
  ThreadData *const td = args->td;
  MACROBLOCK *const x = &td->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
  struct macroblock_plane *p = &x->plane[plane];
  struct macroblockd_plane *pd = &xd->plane[plane];
  (void)plane_bsize;
  av1_set_contexts(xd, pd, plane, tx_size, p->eobs[block] > 0, blk_col,
                   blk_row);
}

static INLINE void add_token(TOKENEXTRA **t,
                             aom_cdf_prob (*tail_cdf)[CDF_SIZE(ENTROPY_TOKENS)],
                             aom_cdf_prob (*head_cdf)[CDF_SIZE(ENTROPY_TOKENS)],
                             int8_t eob_val, int8_t first_val, int32_t extra,
                             uint8_t token, uint8_t allow_update_cdf) {
  (*t)->token = token;
  (*t)->extra = extra;
  (*t)->tail_cdf = tail_cdf;
  (*t)->head_cdf = head_cdf;
  (*t)->eob_val = eob_val;
  (*t)->first_val = first_val;
  (*t)++;

  if (allow_update_cdf) {
    if (token == BLOCK_Z_TOKEN) {
      update_cdf(*head_cdf, 0, HEAD_TOKENS + 1);
    } else {
      if (eob_val != LAST_EOB) {
        const int symb = 2 * AOMMIN(token, TWO_TOKEN) - eob_val + first_val;
        update_cdf(*head_cdf, symb, HEAD_TOKENS + first_val);
      }
      if (token > ONE_TOKEN)
        update_cdf(*tail_cdf, token - TWO_TOKEN, TAIL_TOKENS);
    }
  }
}

static int cost_and_tokenize_map(Av1ColorMapParam *param, TOKENEXTRA **t,
                                 int calc_rate) {
  const uint8_t *const color_map = param->color_map;
  MapCdf map_cdf = param->map_cdf;
  ColorCost color_cost = param->color_cost;
  const int plane_block_width = param->plane_width;
  const int rows = param->rows;
  const int cols = param->cols;
  const int n = param->n_colors;

  int this_rate = 0;
  uint8_t color_order[PALETTE_MAX_SIZE];
#if CONFIG_PALETTE_THROUGHPUT
  for (int k = 1; k < rows + cols - 1; ++k) {
    for (int j = AOMMIN(k, cols - 1); j >= AOMMAX(0, k - rows + 1); --j) {
      int i = k - j;
#else
  for (int i = 0; i < rows; ++i) {
    for (int j = (i == 0 ? 1 : 0); j < cols; ++j) {
#endif  // CONFIG_PALETTE_THROUGHPUT
      int color_new_idx;
      const int color_ctx = av1_get_palette_color_index_context(
          color_map, plane_block_width, i, j, n, color_order, &color_new_idx);
      assert(color_new_idx >= 0 && color_new_idx < n);
      if (calc_rate) {
        this_rate +=
            (*color_cost)[n - PALETTE_MIN_SIZE][color_ctx][color_new_idx];
      } else {
        (*t)->token = color_new_idx;
        (*t)->color_map_cdf = map_cdf[n - PALETTE_MIN_SIZE][color_ctx];
        ++(*t);
      }
    }
  }
  if (calc_rate) return this_rate;
  return 0;
}

static void get_palette_params(const MACROBLOCK *const x, int plane,
                               BLOCK_SIZE bsize, Av1ColorMapParam *params) {
  const MACROBLOCKD *const xd = &x->e_mbd;
  const MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  const PALETTE_MODE_INFO *const pmi = &mbmi->palette_mode_info;
  params->color_map = xd->plane[plane].color_index_map;
  params->map_cdf = plane ? xd->tile_ctx->palette_uv_color_index_cdf
                          : xd->tile_ctx->palette_y_color_index_cdf;
  params->color_cost =
      plane ? &x->palette_uv_color_cost : &x->palette_y_color_cost;
  params->n_colors = pmi->palette_size[plane];
  av1_get_block_dimensions(bsize, plane, xd, &params->plane_width, NULL,
                           &params->rows, &params->cols);
}

static void get_color_map_params(const MACROBLOCK *const x, int plane,
                                 BLOCK_SIZE bsize, TX_SIZE tx_size,
                                 COLOR_MAP_TYPE type,
                                 Av1ColorMapParam *params) {
  (void)tx_size;
  memset(params, 0, sizeof(*params));
  switch (type) {
    case PALETTE_MAP: get_palette_params(x, plane, bsize, params); break;
    default: assert(0 && "Invalid color map type"); return;
  }
}

int av1_cost_color_map(const MACROBLOCK *const x, int plane, BLOCK_SIZE bsize,
                       TX_SIZE tx_size, COLOR_MAP_TYPE type) {
  assert(plane == 0 || plane == 1);
  Av1ColorMapParam color_map_params;
  get_color_map_params(x, plane, bsize, tx_size, type, &color_map_params);
  return cost_and_tokenize_map(&color_map_params, NULL, 1);
}

void av1_tokenize_color_map(const MACROBLOCK *const x, int plane,
                            TOKENEXTRA **t, BLOCK_SIZE bsize, TX_SIZE tx_size,
                            COLOR_MAP_TYPE type) {
  assert(plane == 0 || plane == 1);
  Av1ColorMapParam color_map_params;
  get_color_map_params(x, plane, bsize, tx_size, type, &color_map_params);
  // The first color index does not use context or entropy.
  (*t)->token = color_map_params.color_map[0];
  (*t)->color_map_cdf = NULL;
  ++(*t);
  cost_and_tokenize_map(&color_map_params, t, 0);
}

static void tokenize_b(int plane, int block, int blk_row, int blk_col,
                       BLOCK_SIZE plane_bsize, TX_SIZE tx_size, void *arg) {
  struct tokenize_b_args *const args = arg;
  const AV1_COMP *cpi = args->cpi;
  const AV1_COMMON *const cm = &cpi->common;
  ThreadData *const td = args->td;
  MACROBLOCK *const x = &td->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
  TOKENEXTRA **tp = args->tp;
  const uint8_t allow_update_cdf = args->allow_update_cdf;
  uint8_t token_cache[MAX_TX_SQUARE];
  struct macroblock_plane *p = &x->plane[plane];
  struct macroblockd_plane *pd = &xd->plane[plane];
  MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
  int pt; /* near block/prev token context index */
  int c;
  TOKENEXTRA *t = *tp; /* store tokens starting here */
  const int eob = p->eobs[block];
  const PLANE_TYPE type = pd->plane_type;
  const tran_low_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block);
  const int segment_id = mbmi->segment_id;
  const int16_t *scan, *nb;
  const TX_TYPE tx_type = av1_get_tx_type(type, xd, blk_row, blk_col, tx_size);
  const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
  const int ref = is_inter_block(mbmi);
  FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
  aom_cdf_prob(
      *const coef_head_cdfs)[COEFF_CONTEXTS][CDF_SIZE(ENTROPY_TOKENS)] =
      ec_ctx->coef_head_cdfs[get_txsize_entropy_ctx(tx_size)][type][ref];
  aom_cdf_prob(
      *const coef_tail_cdfs)[COEFF_CONTEXTS][CDF_SIZE(ENTROPY_TOKENS)] =
      ec_ctx->coef_tail_cdfs[get_txsize_entropy_ctx(tx_size)][type][ref];
  int8_t eob_val;
  int8_t first_val = 1;
  const int seg_eob = av1_get_tx_eob(&cpi->common.seg, segment_id, tx_size);
  const uint8_t *const band = get_band_translate(tx_size);
  int16_t token;
  EXTRABIT extra;
  (void)plane_bsize;
  pt = get_entropy_context(tx_size, pd->above_context + blk_col,
                           pd->left_context + blk_row);
  scan = scan_order->scan;
  nb = scan_order->neighbors;
  c = 0;

  if (eob == 0)
    add_token(&t, &coef_tail_cdfs[band[c]][pt], &coef_head_cdfs[band[c]][pt], 1,
              1, 0, BLOCK_Z_TOKEN, allow_update_cdf);

  while (c < eob) {
    int v = qcoeff[scan[c]];
    first_val = (c == 0);

    if (!v) {
      add_token(&t, &coef_tail_cdfs[band[c]][pt], &coef_head_cdfs[band[c]][pt],
                0, first_val, 0, ZERO_TOKEN, allow_update_cdf);
      token_cache[scan[c]] = 0;
    } else {
      eob_val =
          (c + 1 == eob) ? (c + 1 == seg_eob ? LAST_EOB : EARLY_EOB) : NO_EOB;
      av1_get_token_extra(v, &token, &extra);
      add_token(&t, &coef_tail_cdfs[band[c]][pt], &coef_head_cdfs[band[c]][pt],
                eob_val, first_val, extra, (uint8_t)token, allow_update_cdf);
      token_cache[scan[c]] = av1_pt_energy_class[token];
    }
    ++c;
    pt = get_coef_context(nb, token_cache, AOMMIN(c, eob - 1));
  }

  *tp = t;

#if CONFIG_ADAPT_SCAN
  // Since dqcoeff is not available here, we pass qcoeff into
  // av1_update_scan_count_facade(). The update behavior should be the same
  // because av1_update_scan_count_facade() only cares if coefficients are zero
  // or not.
  const int mi_row = -xd->mb_to_top_edge >> (3 + MI_SIZE_LOG2);
  av1_update_scan_count_facade((AV1_COMMON *)cm, xd, mi_row, tx_size, tx_type,
                               qcoeff, c);
#endif

  av1_set_contexts(xd, pd, plane, tx_size, c > 0, blk_col, blk_row);
}

struct is_skippable_args {
  uint16_t *eobs;
  int *skippable;
};
static void is_skippable(int plane, int block, int blk_row, int blk_col,
                         BLOCK_SIZE plane_bsize, TX_SIZE tx_size, void *argv) {
  struct is_skippable_args *args = argv;
  (void)plane;
  (void)plane_bsize;
  (void)tx_size;
  (void)blk_row;
  (void)blk_col;
  args->skippable[0] &= (!args->eobs[block]);
}

// TODO(yaowu): rewrite and optimize this function to remove the usage of
//              av1_foreach_transform_block() and simplify is_skippable().
int av1_is_skippable_in_plane(MACROBLOCK *x, BLOCK_SIZE bsize, int plane) {
  int result = 1;
  struct is_skippable_args args = { x->plane[plane].eobs, &result };
  av1_foreach_transformed_block_in_plane(&x->e_mbd, bsize, plane, is_skippable,
                                         &args);
  return result;
}

void tokenize_vartx(ThreadData *td, TOKENEXTRA **t, RUN_TYPE dry_run,
                    TX_SIZE tx_size, BLOCK_SIZE plane_bsize, int blk_row,
                    int blk_col, int block, int plane, void *arg) {
  MACROBLOCK *const x = &td->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
  MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  const struct macroblockd_plane *const pd = &xd->plane[plane];
  const BLOCK_SIZE bsize = txsize_to_bsize[tx_size];
  const int tx_row = blk_row >> (1 - pd->subsampling_y);
  const int tx_col = blk_col >> (1 - pd->subsampling_x);
  const int max_blocks_high = max_block_high(xd, plane_bsize, plane);
  const int max_blocks_wide = max_block_wide(xd, plane_bsize, plane);
  TX_SIZE plane_tx_size;

  if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return;

  plane_tx_size =
      plane ? uv_txsize_lookup[bsize][mbmi->inter_tx_size[tx_row][tx_col]][0][0]
            : mbmi->inter_tx_size[tx_row][tx_col];

  if (tx_size == plane_tx_size
#if DISABLE_VARTX_FOR_CHROMA
      || pd->subsampling_x || pd->subsampling_y
#endif  // DISABLE_VARTX_FOR_CHROMA
      ) {
    plane_bsize = get_plane_block_size(mbmi->sb_type, pd);
#if CONFIG_LV_MAP
    if (!dry_run) {
      av1_update_and_record_txb_context(plane, block, blk_row, blk_col,
                                        plane_bsize, tx_size, arg);
    } else if (dry_run == DRY_RUN_NORMAL) {
      av1_update_txb_context_b(plane, block, blk_row, blk_col, plane_bsize,
                               tx_size, arg);
    } else {
      printf("DRY_RUN_COSTCOEFFS is not supported yet\n");
      assert(0);
    }
#else
    if (!dry_run)
      tokenize_b(plane, block, blk_row, blk_col, plane_bsize, tx_size, arg);
    else if (dry_run == DRY_RUN_NORMAL)
      set_entropy_context_b(plane, block, blk_row, blk_col, plane_bsize,
                            tx_size, arg);
    else if (dry_run == DRY_RUN_COSTCOEFFS)
      cost_coeffs_b(plane, block, blk_row, blk_col, plane_bsize, tx_size, arg);
#endif
  } else {
    // Half the block size in transform block unit.
    const TX_SIZE sub_txs = sub_tx_size_map[1][tx_size];
    const int bsw = tx_size_wide_unit[sub_txs];
    const int bsh = tx_size_high_unit[sub_txs];
    const int step = bsw * bsh;

    assert(bsw > 0 && bsh > 0);

    for (int row = 0; row < tx_size_high_unit[tx_size]; row += bsh) {
      for (int col = 0; col < tx_size_wide_unit[tx_size]; col += bsw) {
        const int offsetr = blk_row + row;
        const int offsetc = blk_col + col;

        if (offsetr >= max_blocks_high || offsetc >= max_blocks_wide) continue;

        tokenize_vartx(td, t, dry_run, sub_txs, plane_bsize, offsetr, offsetc,
                       block, plane, arg);
        block += step;
      }
    }
  }
}

void av1_tokenize_sb_vartx(const AV1_COMP *cpi, ThreadData *td, TOKENEXTRA **t,
                           RUN_TYPE dry_run, int mi_row, int mi_col,
                           BLOCK_SIZE bsize, int *rate,
                           uint8_t allow_update_cdf) {
  const AV1_COMMON *const cm = &cpi->common;
  MACROBLOCK *const x = &td->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
  MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
#if CONFIG_LV_MAP
  (void)t;
#else
  TOKENEXTRA *t_backup = *t;
#endif
  struct tokenize_b_args arg = { cpi, td, t, 0, allow_update_cdf };
  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols) return;

  if (mbmi->skip) {
    av1_reset_skip_context(xd, mi_row, mi_col, bsize);
#if !CONFIG_LV_MAP
    if (dry_run) *t = t_backup;
#endif
    return;
  }

#if !CONFIG_LV_MAP
  else
    *t = t_backup;
#endif

  for (int plane = 0; plane < av1_num_planes(cm); ++plane) {
    if (!is_chroma_reference(mi_row, mi_col, bsize,
                             xd->plane[plane].subsampling_x,
                             xd->plane[plane].subsampling_y)) {
#if !CONFIG_LV_MAP
      if (!dry_run) {
        (*t)->token = EOSB_TOKEN;
        (*t)++;
      }
#endif
      continue;
    }
    const struct macroblockd_plane *const pd = &xd->plane[plane];
    const BLOCK_SIZE bsizec =
        scale_chroma_bsize(bsize, pd->subsampling_x, pd->subsampling_y);
    const BLOCK_SIZE plane_bsize = get_plane_block_size(bsizec, pd);
    const int mi_width = block_size_wide[plane_bsize] >> tx_size_wide_log2[0];
    const int mi_height = block_size_high[plane_bsize] >> tx_size_wide_log2[0];
    TX_SIZE max_tx_size = get_vartx_max_txsize(
        xd, plane_bsize, pd->subsampling_x || pd->subsampling_y);
#if DISABLE_VARTX_FOR_CHROMA == 2
    // If the luma transform size is split at least one level, split the chroma
    // by one level. Otherwise use the  largest possible trasnform size for
    // chroma.
    if (plane && (pd->subsampling_x || pd->subsampling_y)) {
      const TX_SIZE l_max_tx_size = get_vartx_max_txsize(xd, bsizec, 0);
      const int is_split =
          (l_max_tx_size != mbmi->inter_tx_size[0][0] && bsize == bsizec &&
           txsize_to_bsize[l_max_tx_size] == bsizec);
      if (is_split) max_tx_size = sub_tx_size_map[1][max_tx_size];
    }
#endif  // DISABLE_VARTX_FOR_CHROMA == 2
    const BLOCK_SIZE txb_size = txsize_to_bsize[max_tx_size];
    int bw = block_size_wide[txb_size] >> tx_size_wide_log2[0];
    int bh = block_size_high[txb_size] >> tx_size_wide_log2[0];
    int idx, idy;
    int block = 0;
    int step = tx_size_wide_unit[max_tx_size] * tx_size_high_unit[max_tx_size];

    const BLOCK_SIZE max_unit_bsize = get_plane_block_size(BLOCK_64X64, pd);
    int mu_blocks_wide =
        block_size_wide[max_unit_bsize] >> tx_size_wide_log2[0];
    int mu_blocks_high =
        block_size_high[max_unit_bsize] >> tx_size_high_log2[0];

    mu_blocks_wide = AOMMIN(mi_width, mu_blocks_wide);
    mu_blocks_high = AOMMIN(mi_height, mu_blocks_high);

    for (idy = 0; idy < mi_height; idy += mu_blocks_high) {
      for (idx = 0; idx < mi_width; idx += mu_blocks_wide) {
        int blk_row, blk_col;
        const int unit_height = AOMMIN(mu_blocks_high + idy, mi_height);
        const int unit_width = AOMMIN(mu_blocks_wide + idx, mi_width);
        for (blk_row = idy; blk_row < unit_height; blk_row += bh) {
          for (blk_col = idx; blk_col < unit_width; blk_col += bw) {
            tokenize_vartx(td, t, dry_run, max_tx_size, plane_bsize, blk_row,
                           blk_col, block, plane, &arg);
            block += step;
          }
        }
      }
    }
#if !CONFIG_LV_MAP
    if (!dry_run) {
      (*t)->token = EOSB_TOKEN;
      (*t)++;
    }
#endif
  }
  if (rate) *rate += arg.this_rate;
}

void av1_tokenize_sb(const AV1_COMP *cpi, ThreadData *td, TOKENEXTRA **t,
                     RUN_TYPE dry_run, BLOCK_SIZE bsize, int *rate,
                     const int mi_row, const int mi_col,
                     uint8_t allow_update_cdf) {
  MACROBLOCK *const x = &td->mb;
  MACROBLOCKD *const xd = &x->e_mbd;
  MB_MODE_INFO *const mbmi = &xd->mi[0]->mbmi;
  struct tokenize_b_args arg = { cpi, td, t, 0, allow_update_cdf };
  if (mbmi->skip) {
    av1_reset_skip_context(xd, mi_row, mi_col, bsize);
    return;
  }

  const int num_planes = av1_num_planes(&cpi->common);
  if (!dry_run) {
    for (int plane = 0; plane < num_planes; ++plane) {
      if (!is_chroma_reference(mi_row, mi_col, bsize,
                               xd->plane[plane].subsampling_x,
                               xd->plane[plane].subsampling_y)) {
        (*t)->token = EOSB_TOKEN;
        (*t)++;

        continue;
      }
      av1_foreach_transformed_block_in_plane(xd, bsize, plane, tokenize_b,
                                             &arg);
      (*t)->token = EOSB_TOKEN;
      (*t)++;
    }
  } else if (dry_run == DRY_RUN_NORMAL) {
    for (int plane = 0; plane < num_planes; ++plane) {
      if (!is_chroma_reference(mi_row, mi_col, bsize,
                               xd->plane[plane].subsampling_x,
                               xd->plane[plane].subsampling_y))
        continue;
      av1_foreach_transformed_block_in_plane(xd, bsize, plane,
                                             set_entropy_context_b, &arg);
    }
  } else if (dry_run == DRY_RUN_COSTCOEFFS) {
    for (int plane = 0; plane < num_planes; ++plane) {
      if (!is_chroma_reference(mi_row, mi_col, bsize,
                               xd->plane[plane].subsampling_x,
                               xd->plane[plane].subsampling_y))
        continue;
      av1_foreach_transformed_block_in_plane(xd, bsize, plane, cost_coeffs_b,
                                             &arg);
    }
  }

  if (rate) *rate += arg.this_rate;
}