/*
 * Copyright (c) 2017, 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 "aom/aom_integer.h"
#include "av1/common/onyxc_int.h"
#include "av1/common/txb_common.h"

const int8_t av1_coeff_band_4x4[16] = { 0, 1, 2,  3,  4,  5,  6,  7,
                                        8, 9, 10, 11, 12, 13, 14, 15 };

const int8_t av1_coeff_band_8x8[64] = {
  0,  1,  2,  2,  3,  3,  4,  4,  5,  6,  2,  2,  3,  3,  4,  4,
  7,  7,  8,  8,  9,  9,  10, 10, 7,  7,  8,  8,  9,  9,  10, 10,
  11, 11, 12, 12, 13, 13, 14, 14, 11, 11, 12, 12, 13, 13, 14, 14,
  15, 15, 16, 16, 17, 17, 18, 18, 15, 15, 16, 16, 17, 17, 18, 18,
};

const int8_t av1_coeff_band_16x16[256] = {
  0,  1,  4,  4,  7,  7,  7,  7,  8,  8,  8,  8,  9,  9,  9,  9,  2,  3,  4,
  4,  7,  7,  7,  7,  8,  8,  8,  8,  9,  9,  9,  9,  5,  5,  6,  6,  7,  7,
  7,  7,  8,  8,  8,  8,  9,  9,  9,  9,  5,  5,  6,  6,  7,  7,  7,  7,  8,
  8,  8,  8,  9,  9,  9,  9,  10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12,
  13, 13, 13, 13, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13,
  13, 10, 10, 10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 10, 10,
  10, 10, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15,
  15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 14, 14, 14, 14, 15, 15, 15, 15,
  16, 16, 16, 16, 17, 17, 17, 17, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16,
  16, 17, 17, 17, 17, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17,
  17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 18,
  18, 18, 18, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 18, 18, 18, 18,
  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 18, 18, 18, 18, 19, 19, 19,
  19, 20, 20, 20, 20, 21, 21, 21, 21,
};

const int8_t av1_coeff_band_32x32[1024] = {
  0,  1,  4,  4,  7,  7,  7,  7,  10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11,
  11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 2,  3,  4,  4,  7,  7,
  7,  7,  10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 12,
  12, 12, 12, 12, 12, 12, 12, 5,  5,  6,  6,  7,  7,  7,  7,  10, 10, 10, 10,
  10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12,
  12, 5,  5,  6,  6,  7,  7,  7,  7,  10, 10, 10, 10, 10, 10, 10, 10, 11, 11,
  11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 8,  8,  8,  8,  9,
  9,  9,  9,  10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11,
  12, 12, 12, 12, 12, 12, 12, 12, 8,  8,  8,  8,  9,  9,  9,  9,  10, 10, 10,
  10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12,
  12, 12, 8,  8,  8,  8,  9,  9,  9,  9,  10, 10, 10, 10, 10, 10, 10, 10, 11,
  11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 8,  8,  8,  8,
  9,  9,  9,  9,  10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11,
  11, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14,
  14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16,
  16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14,
  15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 13, 13, 13,
  13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15,
  15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 14,
  14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16,
  16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14,
  14, 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 13, 13,
  13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15,
  15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13,
  14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16,
  16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14,
  14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 17,
  17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
  19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17,
  17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20,
  20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18,
  18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20,
  17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19,
  19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17,
  17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 20,
  20, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18,
  18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20,
  20, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19,
  19, 19, 19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17,
  17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19,
  20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22,
  22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24,
  24, 24, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, 23,
  23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 21, 21, 21, 21,
  21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23,
  23, 24, 24, 24, 24, 24, 24, 24, 24, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22,
  22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24,
  24, 24, 24, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
  23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 21, 21, 21,
  21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23,
  23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 21, 21, 21, 21, 21, 21, 21, 21, 22,
  22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24,
  24, 24, 24, 24, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22,
  22, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24,
};

// The ctx offset table when TX is TX_CLASS_2D.
// TX col and row indices are clamped to 4.
const int8_t av1_nz_map_ctx_offset[TX_SIZES_ALL][5][5] = {
  // TX_4X4
  { { 0, 1, 6, 6, 0 },
    { 1, 6, 6, 21, 0 },
    { 6, 6, 21, 21, 0 },
    { 6, 21, 21, 21, 0 },
    { 0, 0, 0, 0, 0 } },
  // TX_8X8
  { { 0, 1, 6, 6, 21 },
    { 1, 6, 6, 21, 21 },
    { 6, 6, 21, 21, 21 },
    { 6, 21, 21, 21, 21 },
    { 21, 21, 21, 21, 21 } },
  // TX_16X16
  { { 0, 1, 6, 6, 21 },
    { 1, 6, 6, 21, 21 },
    { 6, 6, 21, 21, 21 },
    { 6, 21, 21, 21, 21 },
    { 21, 21, 21, 21, 21 } },
  // TX_32X32
  { { 0, 1, 6, 6, 21 },
    { 1, 6, 6, 21, 21 },
    { 6, 6, 21, 21, 21 },
    { 6, 21, 21, 21, 21 },
    { 21, 21, 21, 21, 21 } },
#if CONFIG_TX64X64
  // TX_64X64
  { { 0, 1, 6, 6, 21 },
    { 1, 6, 6, 21, 21 },
    { 6, 6, 21, 21, 21 },
    { 6, 21, 21, 21, 21 },
    { 21, 21, 21, 21, 21 } },
#endif  // CONFIG_TX64X64
  // TX_4X8
  { { 0, 11, 11, 11, 0 },
    { 11, 11, 11, 11, 0 },
    { 6, 6, 21, 21, 0 },
    { 6, 21, 21, 21, 0 },
    { 21, 21, 21, 21, 0 } },
  // TX_8X4
  { { 0, 16, 6, 6, 21 },
    { 16, 16, 6, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 0, 0, 0, 0, 0 } },
  // TX_8X16
  { { 0, 11, 11, 11, 11 },
    { 11, 11, 11, 11, 11 },
    { 6, 6, 21, 21, 21 },
    { 6, 21, 21, 21, 21 },
    { 21, 21, 21, 21, 21 } },
  // TX_16X8
  { { 0, 16, 6, 6, 21 },
    { 16, 16, 6, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 } },
  // TX_16X32
  { { 0, 11, 11, 11, 11 },
    { 11, 11, 11, 11, 11 },
    { 6, 6, 21, 21, 21 },
    { 6, 21, 21, 21, 21 },
    { 21, 21, 21, 21, 21 } },
  // TX_32X16
  { { 0, 16, 6, 6, 21 },
    { 16, 16, 6, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 } },
#if CONFIG_TX64X64
  // TX_32X64
  { { 0, 11, 11, 11, 11 },
    { 11, 11, 11, 11, 11 },
    { 6, 6, 21, 21, 21 },
    { 6, 21, 21, 21, 21 },
    { 21, 21, 21, 21, 21 } },
  // TX_64X32
  { { 0, 16, 6, 6, 21 },
    { 16, 16, 6, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 } },
#endif  // CONFIG_TX64X64
  // TX_4X16
  { { 0, 11, 11, 11, 0 },
    { 11, 11, 11, 11, 0 },
    { 6, 6, 21, 21, 0 },
    { 6, 21, 21, 21, 0 },
    { 21, 21, 21, 21, 0 } },
  // TX_16X4
  { { 0, 16, 6, 6, 21 },
    { 16, 16, 6, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 0, 0, 0, 0, 0 } },
  // TX_8X32
  { { 0, 11, 11, 11, 11 },
    { 11, 11, 11, 11, 11 },
    { 6, 6, 21, 21, 21 },
    { 6, 21, 21, 21, 21 },
    { 21, 21, 21, 21, 21 } },
  // TX_32X8
  { { 0, 16, 6, 6, 21 },
    { 16, 16, 6, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 } },
#if CONFIG_TX64X64
  // TX_16X64
  { { 0, 11, 11, 11, 11 },
    { 11, 11, 11, 11, 11 },
    { 6, 6, 21, 21, 21 },
    { 6, 21, 21, 21, 21 },
    { 21, 21, 21, 21, 21 } },
  // TX_64X16
  { { 0, 16, 6, 6, 21 },
    { 16, 16, 6, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 },
    { 16, 16, 21, 21, 21 } }
#endif  // CONFIG_TX64X64
};

void av1_init_lv_map(AV1_COMMON *cm) {
  LV_MAP_CTX_TABLE *coeff_ctx_table = &cm->coeff_ctx_table;
  for (int row = 0; row < 2; ++row) {
    for (int col = 0; col < 2; ++col) {
      for (int sig_mag = 0; sig_mag < 3; ++sig_mag) {
        for (int count = 0; count < BASE_CONTEXT_POSITION_NUM + 1; ++count) {
          if (row == 0 && col == 0 && count > 5) continue;
          if ((row == 0 || col == 0) && count > 8) continue;

          coeff_ctx_table->base_ctx_table[row][col][sig_mag][count] =
              get_base_ctx_from_count_mag(row, col, count, sig_mag);
        }
      }
    }
  }
}

const int16_t k_eob_group_start[12] = { 0,  1,  2,  3,   5,   9,
                                        17, 33, 65, 129, 257, 513 };
const int16_t k_eob_offset_bits[12] = { 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };

// Note: because of the SSE2 optimization, levels[] must be in the range [0,
// 127], inclusive.
void av1_get_base_level_counts(const uint8_t *const levels,
                               const int level_minus_1, const int width,
                               const int height, uint8_t *const level_counts) {
  const int stride = width + TX_PAD_HOR;

  for (int row = 0; row < height; ++row) {
    for (int col = 0; col < width; ++col) {
      level_counts[row * width + col] =
          get_level_count(levels, stride, row, col, level_minus_1,
                          base_ref_offset, BASE_CONTEXT_POSITION_NUM);
    }
  }
}

// Note: because of the SSE2 optimization, levels[] must be in the range [0,
// 127], inclusive.
void av1_get_br_level_counts_c(const uint8_t *const levels, const int width,
                               const int height, uint8_t *const level_counts) {
  const int stride = width + TX_PAD_HOR;
  const int level_minus_1 = NUM_BASE_LEVELS;

  for (int row = 0; row < height; ++row) {
    for (int col = 0; col < width; ++col) {
      level_counts[row * width + col] =
          get_level_count(levels, stride, row, col, level_minus_1,
                          br_ref_offset, BR_CONTEXT_POSITION_NUM);
    }
  }
}