entropymode.c 59.5 KB
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/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

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#include "aom_mem/aom_mem.h"
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#include "av1/common/reconinter.h"
#include "av1/common/onyxc_int.h"
#include "av1/common/seg_common.h"
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const aom_prob av1_kf_y_mode_prob[INTRA_MODES][INTRA_MODES][INTRA_MODES - 1] = {
  {
      // above = dc
      { 137, 30, 42, 148, 151, 207, 70, 52, 91 },   // left = dc
      { 92, 45, 102, 136, 116, 180, 74, 90, 100 },  // left = v
      { 73, 32, 19, 187, 222, 215, 46, 34, 100 },   // left = h
      { 91, 30, 32, 116, 121, 186, 93, 86, 94 },    // left = d45
      { 72, 35, 36, 149, 68, 206, 68, 63, 105 },    // left = d135
      { 73, 31, 28, 138, 57, 124, 55, 122, 151 },   // left = d117
      { 67, 23, 21, 140, 126, 197, 40, 37, 171 },   // left = d153
      { 86, 27, 28, 128, 154, 212, 45, 43, 53 },    // left = d207
      { 74, 32, 27, 107, 86, 160, 63, 134, 102 },   // left = d63
      { 59, 67, 44, 140, 161, 202, 78, 67, 119 }    // left = tm
  },
  {
      // above = v
      { 63, 36, 126, 146, 123, 158, 60, 90, 96 },   // left = dc
      { 43, 46, 168, 134, 107, 128, 69, 142, 92 },  // left = v
      { 44, 29, 68, 159, 201, 177, 50, 57, 77 },    // left = h
      { 58, 38, 76, 114, 97, 172, 78, 133, 92 },    // left = d45
      { 46, 41, 76, 140, 63, 184, 69, 112, 57 },    // left = d135
      { 38, 32, 85, 140, 46, 112, 54, 151, 133 },   // left = d117
      { 39, 27, 61, 131, 110, 175, 44, 75, 136 },   // left = d153
      { 52, 30, 74, 113, 130, 175, 51, 64, 58 },    // left = d207
      { 47, 35, 80, 100, 74, 143, 64, 163, 74 },    // left = d63
      { 36, 61, 116, 114, 128, 162, 80, 125, 82 }   // left = tm
  },
  {
      // above = h
      { 82, 26, 26, 171, 208, 204, 44, 32, 105 },  // left = dc
      { 55, 44, 68, 166, 179, 192, 57, 57, 108 },  // left = v
      { 42, 26, 11, 199, 241, 228, 23, 15, 85 },   // left = h
      { 68, 42, 19, 131, 160, 199, 55, 52, 83 },   // left = d45
      { 58, 50, 25, 139, 115, 232, 39, 52, 118 },  // left = d135
      { 50, 35, 33, 153, 104, 162, 64, 59, 131 },  // left = d117
      { 44, 24, 16, 150, 177, 202, 33, 19, 156 },  // left = d153
      { 55, 27, 12, 153, 203, 218, 26, 27, 49 },   // left = d207
      { 53, 49, 21, 110, 116, 168, 59, 80, 76 },   // left = d63
      { 38, 72, 19, 168, 203, 212, 50, 50, 107 }   // left = tm
  },
  {
      // above = d45
      { 103, 26, 36, 129, 132, 201, 83, 80, 93 },  // left = dc
      { 59, 38, 83, 112, 103, 162, 98, 136, 90 },  // left = v
      { 62, 30, 23, 158, 200, 207, 59, 57, 50 },   // left = h
      { 67, 30, 29, 84, 86, 191, 102, 91, 59 },    // left = d45
      { 60, 32, 33, 112, 71, 220, 64, 89, 104 },   // left = d135
      { 53, 26, 34, 130, 56, 149, 84, 120, 103 },  // left = d117
      { 53, 21, 23, 133, 109, 210, 56, 77, 172 },  // left = d153
      { 77, 19, 29, 112, 142, 228, 55, 66, 36 },   // left = d207
      { 61, 29, 29, 93, 97, 165, 83, 175, 162 },   // left = d63
      { 47, 47, 43, 114, 137, 181, 100, 99, 95 }   // left = tm
  },
  {
      // above = d135
      { 69, 23, 29, 128, 83, 199, 46, 44, 101 },   // left = dc
      { 53, 40, 55, 139, 69, 183, 61, 80, 110 },   // left = v
      { 40, 29, 19, 161, 180, 207, 43, 24, 91 },   // left = h
      { 60, 34, 19, 105, 61, 198, 53, 64, 89 },    // left = d45
      { 52, 31, 22, 158, 40, 209, 58, 62, 89 },    // left = d135
      { 44, 31, 29, 147, 46, 158, 56, 102, 198 },  // left = d117
      { 35, 19, 12, 135, 87, 209, 41, 45, 167 },   // left = d153
      { 55, 25, 21, 118, 95, 215, 38, 39, 66 },    // left = d207
      { 51, 38, 25, 113, 58, 164, 70, 93, 97 },    // left = d63
      { 47, 54, 34, 146, 108, 203, 72, 103, 151 }  // left = tm
  },
  {
      // above = d117
      { 64, 19, 37, 156, 66, 138, 49, 95, 133 },   // left = dc
      { 46, 27, 80, 150, 55, 124, 55, 121, 135 },  // left = v
      { 36, 23, 27, 165, 149, 166, 54, 64, 118 },  // left = h
      { 53, 21, 36, 131, 63, 163, 60, 109, 81 },   // left = d45
      { 40, 26, 35, 154, 40, 185, 51, 97, 123 },   // left = d135
      { 35, 19, 34, 179, 19, 97, 48, 129, 124 },   // left = d117
      { 36, 20, 26, 136, 62, 164, 33, 77, 154 },   // left = d153
      { 45, 18, 32, 130, 90, 157, 40, 79, 91 },    // left = d207
      { 45, 26, 28, 129, 45, 129, 49, 147, 123 },  // left = d63
      { 38, 44, 51, 136, 74, 162, 57, 97, 121 }    // left = tm
  },
  {
      // above = d153
      { 75, 17, 22, 136, 138, 185, 32, 34, 166 },  // left = dc
      { 56, 39, 58, 133, 117, 173, 48, 53, 187 },  // left = v
      { 35, 21, 12, 161, 212, 207, 20, 23, 145 },  // left = h
      { 56, 29, 19, 117, 109, 181, 55, 68, 112 },  // left = d45
      { 47, 29, 17, 153, 64, 220, 59, 51, 114 },   // left = d135
      { 46, 16, 24, 136, 76, 147, 41, 64, 172 },   // left = d117
      { 34, 17, 11, 108, 152, 187, 13, 15, 209 },  // left = d153
      { 51, 24, 14, 115, 133, 209, 32, 26, 104 },  // left = d207
      { 55, 30, 18, 122, 79, 179, 44, 88, 116 },   // left = d63
      { 37, 49, 25, 129, 168, 164, 41, 54, 148 }   // left = tm
  },
  {
      // above = d207
      { 82, 22, 32, 127, 143, 213, 39, 41, 70 },   // left = dc
      { 62, 44, 61, 123, 105, 189, 48, 57, 64 },   // left = v
      { 47, 25, 17, 175, 222, 220, 24, 30, 86 },   // left = h
      { 68, 36, 17, 106, 102, 206, 59, 74, 74 },   // left = d45
      { 57, 39, 23, 151, 68, 216, 55, 63, 58 },    // left = d135
      { 49, 30, 35, 141, 70, 168, 82, 40, 115 },   // left = d117
      { 51, 25, 15, 136, 129, 202, 38, 35, 139 },  // left = d153
      { 68, 26, 16, 111, 141, 215, 29, 28, 28 },   // left = d207
      { 59, 39, 19, 114, 75, 180, 77, 104, 42 },   // left = d63
      { 40, 61, 26, 126, 152, 206, 61, 59, 93 }    // left = tm
  },
  {
      // above = d63
      { 78, 23, 39, 111, 117, 170, 74, 124, 94 },   // left = dc
      { 48, 34, 86, 101, 92, 146, 78, 179, 134 },   // left = v
      { 47, 22, 24, 138, 187, 178, 68, 69, 59 },    // left = h
      { 56, 25, 33, 105, 112, 187, 95, 177, 129 },  // left = d45
      { 48, 31, 27, 114, 63, 183, 82, 116, 56 },    // left = d135
      { 43, 28, 37, 121, 63, 123, 61, 192, 169 },   // left = d117
      { 42, 17, 24, 109, 97, 177, 56, 76, 122 },    // left = d153
      { 58, 18, 28, 105, 139, 182, 70, 92, 63 },    // left = d207
      { 46, 23, 32, 74, 86, 150, 67, 183, 88 },     // left = d63
      { 36, 38, 48, 92, 122, 165, 88, 137, 91 }     // left = tm
  },
  {
      // above = tm
      { 65, 70, 60, 155, 159, 199, 61, 60, 81 },    // left = dc
      { 44, 78, 115, 132, 119, 173, 71, 112, 93 },  // left = v
      { 39, 38, 21, 184, 227, 206, 42, 32, 64 },    // left = h
      { 58, 47, 36, 124, 137, 193, 80, 82, 78 },    // left = d45
      { 49, 50, 35, 144, 95, 205, 63, 78, 59 },     // left = d135
      { 41, 53, 52, 148, 71, 142, 65, 128, 51 },    // left = d117
      { 40, 36, 28, 143, 143, 202, 40, 55, 137 },   // left = d153
      { 52, 34, 29, 129, 183, 227, 42, 35, 43 },    // left = d207
      { 42, 44, 44, 104, 105, 164, 64, 130, 80 },   // left = d63
      { 43, 81, 53, 140, 169, 204, 68, 84, 72 }     // left = tm
  }
};

static const aom_prob default_if_y_probs[BLOCK_SIZE_GROUPS][INTRA_MODES - 1] = {
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  { 65, 32, 18, 144, 162, 194, 41, 51, 98 },   // block_size < 8x8
  { 132, 68, 18, 165, 217, 196, 45, 40, 78 },  // block_size < 16x16
  { 173, 80, 19, 176, 240, 193, 64, 35, 46 },  // block_size < 32x32
  { 221, 135, 38, 194, 248, 121, 96, 85, 29 }  // block_size >= 32x32
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};

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static const aom_prob default_uv_probs[INTRA_MODES][INTRA_MODES - 1] = {
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  { 120, 7, 76, 176, 208, 126, 28, 54, 103 },   // y = dc
  { 48, 12, 154, 155, 139, 90, 34, 117, 119 },  // y = v
  { 67, 6, 25, 204, 243, 158, 13, 21, 96 },     // y = h
  { 97, 5, 44, 131, 176, 139, 48, 68, 97 },     // y = d45
  { 83, 5, 42, 156, 111, 152, 26, 49, 152 },    // y = d135
  { 80, 5, 58, 178, 74, 83, 33, 62, 145 },      // y = d117
  { 86, 5, 32, 154, 192, 168, 14, 22, 163 },    // y = d153
  { 85, 5, 32, 156, 216, 148, 19, 29, 73 },     // y = d207
  { 77, 7, 64, 116, 132, 122, 37, 126, 120 },   // y = d63
  { 101, 21, 107, 181, 192, 103, 19, 67, 125 }  // y = tm
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};

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#if CONFIG_EXT_PARTITION_TYPES
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static const aom_prob
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    default_partition_probs[PARTITION_CONTEXTS][EXT_PARTITION_TYPES - 1] = {
      // 8x8 -> 4x4
      { 199, 122, 141, 128, 128, 128, 128 },  // a/l both not split
      { 147, 63, 159, 128, 128, 128, 128 },   // a split, l not split
      { 148, 133, 118, 128, 128, 128, 128 },  // l split, a not split
      { 121, 104, 114, 128, 128, 128, 128 },  // a/l both split
      // 16x16 -> 8x8
      { 174, 73, 87, 128, 128, 128, 128 },  // a/l both not split
      { 92, 41, 83, 128, 128, 128, 128 },   // a split, l not split
      { 82, 99, 50, 128, 128, 128, 128 },   // l split, a not split
      { 53, 39, 39, 128, 128, 128, 128 },   // a/l both split
      // 32x32 -> 16x16
      { 177, 58, 59, 128, 128, 128, 128 },  // a/l both not split
      { 68, 26, 63, 128, 128, 128, 128 },   // a split, l not split
      { 52, 79, 25, 128, 128, 128, 128 },   // l split, a not split
      { 17, 14, 12, 128, 128, 128, 128 },   // a/l both split
      // 64x64 -> 32x32
      { 222, 34, 30, 128, 128, 128, 128 },  // a/l both not split
      { 72, 16, 44, 128, 128, 128, 128 },   // a split, l not split
      { 58, 32, 12, 128, 128, 128, 128 },   // l split, a not split
      { 10, 7, 6, 128, 128, 128, 128 },     // a/l both split
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#if CONFIG_EXT_PARTITION
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      // 128x128 -> 64x64
      { 222, 34, 30, 128, 128, 128, 128 },  // a/l both not split
      { 72, 16, 44, 128, 128, 128, 128 },   // a split, l not split
      { 58, 32, 12, 128, 128, 128, 128 },   // l split, a not split
      { 10, 7, 6, 128, 128, 128, 128 },     // a/l both split
#endif                                      // CONFIG_EXT_PARTITION
    };
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#else
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static const aom_prob
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    default_partition_probs[PARTITION_CONTEXTS][PARTITION_TYPES - 1] = {
      // 8x8 -> 4x4
      { 199, 122, 141 },  // a/l both not split
      { 147, 63, 159 },   // a split, l not split
      { 148, 133, 118 },  // l split, a not split
      { 121, 104, 114 },  // a/l both split
      // 16x16 -> 8x8
      { 174, 73, 87 },  // a/l both not split
      { 92, 41, 83 },   // a split, l not split
      { 82, 99, 50 },   // l split, a not split
      { 53, 39, 39 },   // a/l both split
      // 32x32 -> 16x16
      { 177, 58, 59 },  // a/l both not split
      { 68, 26, 63 },   // a split, l not split
      { 52, 79, 25 },   // l split, a not split
      { 17, 14, 12 },   // a/l both split
      // 64x64 -> 32x32
      { 222, 34, 30 },  // a/l both not split
      { 72, 16, 44 },   // a split, l not split
      { 58, 32, 12 },   // l split, a not split
      { 10, 7, 6 },     // a/l both split
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#if CONFIG_EXT_PARTITION
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      // 128x128 -> 64x64
      { 222, 34, 30 },  // a/l both not split
      { 72, 16, 44 },   // a split, l not split
      { 58, 32, 12 },   // l split, a not split
      { 10, 7, 6 },     // a/l both split
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#endif  // CONFIG_EXT_PARTITION
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    };
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#endif  // CONFIG_EXT_PARTITION_TYPES
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#if CONFIG_REF_MV
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static const aom_prob default_newmv_prob[NEWMV_MODE_CONTEXTS] = {
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  200, 180, 150, 150, 110, 70, 60,
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};

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static const aom_prob default_zeromv_prob[ZEROMV_MODE_CONTEXTS] = {
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  192, 64,
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};

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static const aom_prob default_refmv_prob[REFMV_MODE_CONTEXTS] = {
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  220, 220, 200, 200, 180, 128, 30, 220, 30,
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};
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static const aom_prob default_drl_prob[DRL_MODE_CONTEXTS] = { 128, 160, 180,
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                                                              128, 160 };
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#if CONFIG_EXT_INTER
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static const aom_prob default_new2mv_prob = 180;
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#endif  // CONFIG_EXT_INTER
#endif  // CONFIG_REF_MV
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static const aom_prob
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    default_inter_mode_probs[INTER_MODE_CONTEXTS][INTER_MODES - 1] = {
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#if CONFIG_EXT_INTER
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      // TODO(zoeliu): To adjust the initial default probs
      { 2, 173, 34, 173 },  // 0 = both zero mv
      { 7, 145, 85, 145 },  // 1 = one zero mv + one a predicted mv
      { 7, 166, 63, 166 },  // 2 = two predicted mvs
      { 7, 94, 66, 128 },   // 3 = one predicted/zero and one new mv
      { 8, 64, 46, 128 },   // 4 = two new mvs
      { 17, 81, 31, 128 },  // 5 = one intra neighbour + x
      { 25, 29, 30, 96 },   // 6 = two intra neighbours
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#else
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      { 2, 173, 34 },  // 0 = both zero mv
      { 7, 145, 85 },  // 1 = one zero mv + one a predicted mv
      { 7, 166, 63 },  // 2 = two predicted mvs
      { 7, 94, 66 },   // 3 = one predicted/zero and one new mv
      { 8, 64, 46 },   // 4 = two new mvs
      { 17, 81, 31 },  // 5 = one intra neighbour + x
      { 25, 29, 30 },  // 6 = two intra neighbours
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#endif  // CONFIG_EXT_INTER
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    };
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#if CONFIG_EXT_INTER
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static const aom_prob default_inter_compound_mode_probs
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    [INTER_MODE_CONTEXTS][INTER_COMPOUND_MODES - 1] = {
      { 2, 173, 68, 192, 64, 192, 128, 180, 180 },   // 0 = both zero mv
      { 7, 145, 160, 192, 64, 192, 128, 180, 180 },  // 1 = 1 zero + 1 predicted
      { 7, 166, 126, 192, 64, 192, 128, 180, 180 },  // 2 = two predicted mvs
      { 7, 94, 132, 192, 64, 192, 128, 180, 180 },   // 3 = 1 pred/zero, 1 new
      { 8, 64, 64, 192, 64, 192, 128, 180, 180 },    // 4 = two new mvs
      { 17, 81, 52, 192, 64, 192, 128, 180, 180 },   // 5 = one intra neighbour
      { 25, 29, 50, 192, 64, 192, 128, 180, 180 },   // 6 = two intra neighbours
    };
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static const aom_prob default_interintra_prob[BLOCK_SIZE_GROUPS] = {
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  208, 208, 208, 208,
};

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static const aom_prob
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    default_interintra_mode_prob[BLOCK_SIZE_GROUPS][INTERINTRA_MODES - 1] = {
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      { 65, 32, 18, 144, 162, 194, 41, 51, 98 },   // block_size < 8x8
      { 132, 68, 18, 165, 217, 196, 45, 40, 78 },  // block_size < 16x16
      { 173, 80, 19, 176, 240, 193, 64, 35, 46 },  // block_size < 32x32
      { 221, 135, 38, 194, 248, 121, 96, 85, 29 }  // block_size >= 32x32
    };
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static const aom_prob default_wedge_interintra_prob[BLOCK_SIZES] = {
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  208, 208, 208, 208, 208, 208, 216, 216, 216, 224, 224, 224, 240,
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#if CONFIG_EXT_PARTITION
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  208, 208, 208
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#endif  // CONFIG_EXT_PARTITION
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};

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static const aom_prob default_wedge_interinter_prob[BLOCK_SIZES] = {
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  208, 208, 208, 208, 208, 208, 216, 216, 216, 224, 224, 224, 240,
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#if CONFIG_EXT_PARTITION
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  255, 255, 255
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#endif  // CONFIG_EXT_PARTITION
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};
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#endif  // CONFIG_EXT_INTER

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// Change this section appropriately once warped motion is supported
#if CONFIG_OBMC && !CONFIG_WARPED_MOTION
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const aom_tree_index av1_motvar_tree[TREE_SIZE(MOTION_VARIATIONS)] = {
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  -SIMPLE_TRANSLATION, -OBMC_CAUSAL
};
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static const aom_prob default_motvar_prob[BLOCK_SIZES][MOTION_VARIATIONS - 1] =
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    {
      { 255 }, { 255 }, { 255 }, { 151 }, { 153 }, { 144 }, { 178 },
      { 165 }, { 160 }, { 207 }, { 195 }, { 168 }, { 244 },
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#if CONFIG_EXT_PARTITION
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      { 252 }, { 252 }, { 252 },
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#endif  // CONFIG_EXT_PARTITION
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    };
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#elif !CONFIG_OBMC && CONFIG_WARPED_MOTION

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const aom_tree_index av1_motvar_tree[TREE_SIZE(MOTION_VARIATIONS)] = {
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  -SIMPLE_TRANSLATION, -WARPED_CAUSAL
};
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static const aom_prob default_motvar_prob[BLOCK_SIZES][MOTION_VARIATIONS - 1] =
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    {
      { 255 }, { 255 }, { 255 }, { 151 }, { 153 }, { 144 }, { 178 },
      { 165 }, { 160 }, { 207 }, { 195 }, { 168 }, { 244 },
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#if CONFIG_EXT_PARTITION
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      { 252 }, { 252 }, { 252 },
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#endif  // CONFIG_EXT_PARTITION
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    };
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#elif CONFIG_OBMC && CONFIG_WARPED_MOTION

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const aom_tree_index av1_motvar_tree[TREE_SIZE(MOTION_VARIATIONS)] = {
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  -SIMPLE_TRANSLATION, 2, -OBMC_CAUSAL, -WARPED_CAUSAL,
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};
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static const aom_prob default_motvar_prob[BLOCK_SIZES][MOTION_VARIATIONS - 1] =
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    {
      { 255, 200 }, { 255, 200 }, { 255, 200 }, { 151, 200 }, { 153, 200 },
      { 144, 200 }, { 178, 200 }, { 165, 200 }, { 160, 200 }, { 207, 200 },
      { 195, 200 }, { 168, 200 }, { 244, 200 },
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#if CONFIG_EXT_PARTITION
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      { 252, 200 }, { 252, 200 }, { 252, 200 },
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#endif  // CONFIG_EXT_PARTITION
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    };
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#endif  // CONFIG_OBMC || !CONFIG_WARPED_MOTION
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/* Array indices are identical to previously-existing INTRAMODECONTEXTNODES. */
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const aom_tree_index av1_intra_mode_tree[TREE_SIZE(INTRA_MODES)] = {
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  -DC_PRED,   2,          /* 0 = DC_NODE */
  -TM_PRED,   4,          /* 1 = TM_NODE */
  -V_PRED,    6,          /* 2 = V_NODE */
  8,          12,         /* 3 = COM_NODE */
  -H_PRED,    10,         /* 4 = H_NODE */
  -D135_PRED, -D117_PRED, /* 5 = D135_NODE */
  -D45_PRED,  14,         /* 6 = D45_NODE */
  -D63_PRED,  16,         /* 7 = D63_NODE */
  -D153_PRED, -D207_PRED  /* 8 = D153_NODE */
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};

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const aom_tree_index av1_inter_mode_tree[TREE_SIZE(INTER_MODES)] = {
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  -INTER_OFFSET(ZEROMV),    2,
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  -INTER_OFFSET(NEARESTMV), 4,
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#if CONFIG_EXT_INTER
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  -INTER_OFFSET(NEARMV),    6,
  -INTER_OFFSET(NEWMV),     -INTER_OFFSET(NEWFROMNEARMV)
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#else
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  -INTER_OFFSET(NEARMV),    -INTER_OFFSET(NEWMV)
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#endif  // CONFIG_EXT_INTER
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};

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#if CONFIG_EXT_INTER
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/* clang-format off */
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const aom_tree_index av1_interintra_mode_tree[TREE_SIZE(INTERINTRA_MODES)] = {
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  -II_DC_PRED, 2,                   /* 0 = II_DC_NODE     */
  -II_TM_PRED, 4,                   /* 1 = II_TM_NODE     */
  -II_V_PRED, 6,                    /* 2 = II_V_NODE      */
  8, 12,                            /* 3 = II_COM_NODE    */
  -II_H_PRED, 10,                   /* 4 = II_H_NODE      */
  -II_D135_PRED, -II_D117_PRED,     /* 5 = II_D135_NODE   */
  -II_D45_PRED, 14,                 /* 6 = II_D45_NODE    */
  -II_D63_PRED, 16,                 /* 7 = II_D63_NODE    */
  -II_D153_PRED, -II_D207_PRED      /* 8 = II_D153_NODE   */
};

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const aom_tree_index av1_inter_compound_mode_tree
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    [TREE_SIZE(INTER_COMPOUND_MODES)] = {
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  -INTER_COMPOUND_OFFSET(ZERO_ZEROMV), 2,
  -INTER_COMPOUND_OFFSET(NEAREST_NEARESTMV), 4,
  6, -INTER_COMPOUND_OFFSET(NEW_NEWMV),
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  8, 12,
  -INTER_COMPOUND_OFFSET(NEAR_NEARMV), 10,
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  -INTER_COMPOUND_OFFSET(NEAREST_NEARMV),
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      -INTER_COMPOUND_OFFSET(NEAR_NEARESTMV),
  14, 16,
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  -INTER_COMPOUND_OFFSET(NEAREST_NEWMV), -INTER_COMPOUND_OFFSET(NEW_NEARESTMV),
  -INTER_COMPOUND_OFFSET(NEAR_NEWMV), -INTER_COMPOUND_OFFSET(NEW_NEARMV)
};
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/* clang-format on */
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#endif  // CONFIG_EXT_INTER

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const aom_tree_index av1_partition_tree[TREE_SIZE(PARTITION_TYPES)] = {
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  -PARTITION_NONE, 2, -PARTITION_HORZ, 4, -PARTITION_VERT, -PARTITION_SPLIT
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};

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#if CONFIG_EXT_PARTITION_TYPES
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/* clang-format off */
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const aom_tree_index av1_ext_partition_tree[TREE_SIZE(EXT_PARTITION_TYPES)] = {
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  -PARTITION_NONE, 2,
  6, 4,
  8, -PARTITION_SPLIT,
  -PARTITION_HORZ, 10,
  -PARTITION_VERT, 12,
  -PARTITION_HORZ_A, -PARTITION_HORZ_B,
  -PARTITION_VERT_A, -PARTITION_VERT_B
};
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/* clang-format on */
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#endif  // CONFIG_EXT_PARTITION_TYPES

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static const aom_prob default_intra_inter_p[INTRA_INTER_CONTEXTS] = {
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  9, 102, 187, 225
};

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static const aom_prob default_comp_inter_p[COMP_INTER_CONTEXTS] = {
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  239, 183, 119, 96, 41
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};

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#if CONFIG_EXT_REFS
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static const aom_prob default_comp_ref_p[REF_CONTEXTS][FWD_REFS - 1] = {
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  // TODO(zoeliu): To adjust the initial prob values.
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  { 33, 16, 16 },
  { 77, 74, 74 },
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  { 142, 142, 142 },
  { 172, 170, 170 },
  { 238, 247, 247 }
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};
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static const aom_prob default_comp_bwdref_p[REF_CONTEXTS][BWD_REFS - 1] = {
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  { 16 }, { 74 }, { 142 }, { 170 }, { 247 }
};
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#else
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static const aom_prob default_comp_ref_p[REF_CONTEXTS][COMP_REFS - 1] = {
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  { 50 }, { 126 }, { 123 }, { 221 }, { 226 }
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};
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#endif  // CONFIG_EXT_REFS
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static const aom_prob default_single_ref_p[REF_CONTEXTS][SINGLE_REFS - 1] = {
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#if CONFIG_EXT_REFS
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  { 33, 16, 16, 16, 16 },
  { 77, 74, 74, 74, 74 },
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  { 142, 142, 142, 142, 142 },
  { 172, 170, 170, 170, 170 },
  { 238, 247, 247, 247, 247 }
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#else
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  { 33, 16 }, { 77, 74 }, { 142, 142 }, { 172, 170 }, { 238, 247 }
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#endif  // CONFIG_EXT_REFS
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};

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const aom_tree_index av1_palette_size_tree[TREE_SIZE(PALETTE_SIZES)] = {
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  -TWO_COLORS,  2, -THREE_COLORS, 4,  -FOUR_COLORS,  6,
  -FIVE_COLORS, 8, -SIX_COLORS,   10, -SEVEN_COLORS, -EIGHT_COLORS,
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};

// TODO(huisu): tune these probs
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const aom_prob
    av1_default_palette_y_size_prob[PALETTE_BLOCK_SIZES][PALETTE_SIZES - 1] = {
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      { 96, 89, 100, 64, 77, 130 },   { 22, 15, 44, 16, 34, 82 },
      { 30, 19, 57, 18, 38, 86 },     { 94, 36, 104, 23, 43, 92 },
      { 116, 76, 107, 46, 65, 105 },  { 112, 82, 94, 40, 70, 112 },
      { 147, 124, 123, 58, 69, 103 }, { 180, 113, 136, 49, 45, 114 },
      { 107, 70, 87, 49, 154, 156 },  { 98, 105, 142, 63, 64, 152 },
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#if CONFIG_EXT_PARTITION
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      { 98, 105, 142, 63, 64, 152 },  { 98, 105, 142, 63, 64, 152 },
      { 98, 105, 142, 63, 64, 152 },
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#endif  // CONFIG_EXT_PARTITION
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    };
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const aom_prob
    av1_default_palette_uv_size_prob[PALETTE_BLOCK_SIZES][PALETTE_SIZES - 1] = {
      { 160, 196, 228, 213, 175, 230 }, { 87, 148, 208, 141, 166, 163 },
      { 72, 151, 204, 139, 155, 161 },  { 78, 135, 171, 104, 120, 173 },
      { 59, 92, 131, 78, 92, 142 },     { 75, 118, 149, 84, 90, 128 },
      { 89, 87, 92, 66, 66, 128 },      { 67, 53, 54, 55, 66, 93 },
      { 120, 130, 83, 171, 75, 214 },   { 72, 55, 66, 68, 79, 107 },
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#if CONFIG_EXT_PARTITION
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      { 72, 55, 66, 68, 79, 107 },      { 72, 55, 66, 68, 79, 107 },
      { 72, 55, 66, 68, 79, 107 },
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#endif  // CONFIG_EXT_PARTITION
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    };
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const aom_prob av1_default_palette_y_mode_prob
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    [PALETTE_BLOCK_SIZES][PALETTE_Y_MODE_CONTEXTS] = {
      { 240, 180, 100 }, { 240, 180, 100 }, { 240, 180, 100 },
      { 240, 180, 100 }, { 240, 180, 100 }, { 240, 180, 100 },
      { 240, 180, 100 }, { 240, 180, 100 }, { 240, 180, 100 },
      { 240, 180, 100 },
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      { 240, 180, 100 }, { 240, 180, 100 }, { 240, 180, 100 },
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#endif  // CONFIG_EXT_PARTITION
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    };
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const aom_prob av1_default_palette_uv_mode_prob[2] = { 253, 229 };
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const aom_tree_index
    av1_palette_color_tree[PALETTE_MAX_SIZE - 1][TREE_SIZE(PALETTE_COLORS)] = {
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      { // 2 colors
        -PALETTE_COLOR_ONE, -PALETTE_COLOR_TWO },
      { // 3 colors
        -PALETTE_COLOR_ONE, 2, -PALETTE_COLOR_TWO, -PALETTE_COLOR_THREE },
      { // 4 colors
        -PALETTE_COLOR_ONE, 2, -PALETTE_COLOR_TWO, 4, -PALETTE_COLOR_THREE,
        -PALETTE_COLOR_FOUR },
      { // 5 colors
        -PALETTE_COLOR_ONE, 2, -PALETTE_COLOR_TWO, 4, -PALETTE_COLOR_THREE, 6,
        -PALETTE_COLOR_FOUR, -PALETTE_COLOR_FIVE },
      { // 6 colors
        -PALETTE_COLOR_ONE, 2, -PALETTE_COLOR_TWO, 4, -PALETTE_COLOR_THREE, 6,
        -PALETTE_COLOR_FOUR, 8, -PALETTE_COLOR_FIVE, -PALETTE_COLOR_SIX },
      { // 7 colors
        -PALETTE_COLOR_ONE, 2, -PALETTE_COLOR_TWO, 4, -PALETTE_COLOR_THREE, 6,
        -PALETTE_COLOR_FOUR, 8, -PALETTE_COLOR_FIVE, 10, -PALETTE_COLOR_SIX,
        -PALETTE_COLOR_SEVEN },
      { // 8 colors
        -PALETTE_COLOR_ONE, 2, -PALETTE_COLOR_TWO, 4, -PALETTE_COLOR_THREE, 6,
        -PALETTE_COLOR_FOUR, 8, -PALETTE_COLOR_FIVE, 10, -PALETTE_COLOR_SIX, 12,
        -PALETTE_COLOR_SEVEN, -PALETTE_COLOR_EIGHT },
    };
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const aom_prob av1_default_palette_y_color_prob
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    [PALETTE_MAX_SIZE - 1][PALETTE_COLOR_CONTEXTS][PALETTE_COLORS - 1] = {
      {
          // 2 colors
          { 230, 255, 128, 128, 128, 128, 128 },
          { 214, 255, 128, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 240, 255, 128, 128, 128, 128, 128 },
          { 73, 255, 128, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 130, 255, 128, 128, 128, 128, 128 },
          { 227, 255, 128, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 188, 255, 128, 128, 128, 128, 128 },
          { 75, 255, 128, 128, 128, 128, 128 },
          { 250, 255, 128, 128, 128, 128, 128 },
          { 223, 255, 128, 128, 128, 128, 128 },
          { 252, 255, 128, 128, 128, 128, 128 },
      },
      {
          // 3 colors
          { 229, 137, 255, 128, 128, 128, 128 },
          { 197, 120, 255, 128, 128, 128, 128 },
          { 107, 195, 255, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 27, 151, 255, 128, 128, 128, 128 },
          { 230, 130, 255, 128, 128, 128, 128 },
          { 37, 230, 255, 128, 128, 128, 128 },
          { 67, 221, 255, 128, 128, 128, 128 },
          { 124, 230, 255, 128, 128, 128, 128 },
          { 195, 109, 255, 128, 128, 128, 128 },
          { 99, 122, 255, 128, 128, 128, 128 },
          { 205, 208, 255, 128, 128, 128, 128 },
          { 40, 235, 255, 128, 128, 128, 128 },
          { 251, 132, 255, 128, 128, 128, 128 },
          { 237, 186, 255, 128, 128, 128, 128 },
          { 253, 112, 255, 128, 128, 128, 128 },
      },
      {
          // 4 colors
          { 195, 87, 128, 255, 128, 128, 128 },
          { 143, 100, 123, 255, 128, 128, 128 },
          { 94, 124, 119, 255, 128, 128, 128 },
          { 77, 91, 130, 255, 128, 128, 128 },
          { 39, 114, 178, 255, 128, 128, 128 },
          { 222, 94, 125, 255, 128, 128, 128 },
          { 44, 203, 132, 255, 128, 128, 128 },
          { 68, 175, 122, 255, 128, 128, 128 },
          { 110, 187, 124, 255, 128, 128, 128 },
          { 152, 91, 128, 255, 128, 128, 128 },
          { 70, 109, 181, 255, 128, 128, 128 },
          { 133, 113, 164, 255, 128, 128, 128 },
          { 47, 205, 133, 255, 128, 128, 128 },
          { 247, 94, 136, 255, 128, 128, 128 },
          { 205, 122, 146, 255, 128, 128, 128 },
          { 251, 100, 141, 255, 128, 128, 128 },
      },
      {
          // 5 colors
          { 195, 65, 84, 125, 255, 128, 128 },
          { 150, 76, 84, 121, 255, 128, 128 },
          { 94, 110, 81, 117, 255, 128, 128 },
          { 79, 85, 91, 139, 255, 128, 128 },
          { 26, 102, 139, 127, 255, 128, 128 },
          { 220, 73, 91, 119, 255, 128, 128 },
          { 38, 203, 86, 127, 255, 128, 128 },
          { 61, 186, 72, 124, 255, 128, 128 },
          { 132, 199, 84, 128, 255, 128, 128 },
          { 172, 52, 62, 120, 255, 128, 128 },
          { 102, 89, 121, 122, 255, 128, 128 },
          { 182, 48, 69, 186, 255, 128, 128 },
          { 36, 206, 87, 126, 255, 128, 128 },
          { 249, 55, 67, 122, 255, 128, 128 },
          { 218, 88, 75, 122, 255, 128, 128 },
          { 253, 64, 80, 119, 255, 128, 128 },
      },
      {
          // 6 colors
          { 182, 54, 64, 75, 118, 255, 128 },
          { 126, 67, 70, 76, 116, 255, 128 },
          { 79, 92, 67, 85, 120, 255, 128 },
          { 63, 61, 81, 118, 132, 255, 128 },
          { 21, 80, 105, 83, 119, 255, 128 },
          { 215, 72, 74, 74, 111, 255, 128 },
          { 50, 176, 63, 79, 120, 255, 128 },
          { 72, 148, 66, 77, 120, 255, 128 },
          { 105, 177, 57, 78, 130, 255, 128 },
          { 150, 66, 66, 80, 127, 255, 128 },
          { 81, 76, 109, 85, 116, 255, 128 },
          { 113, 81, 62, 96, 148, 255, 128 },
          { 54, 179, 69, 82, 121, 255, 128 },
          { 244, 47, 48, 67, 118, 255, 128 },
          { 198, 83, 53, 65, 121, 255, 128 },
          { 250, 42, 51, 69, 110, 255, 128 },
      },
      {
          // 7 colors
          { 182, 45, 54, 62, 74, 113, 255 },
          { 124, 63, 57, 62, 77, 114, 255 },
          { 77, 80, 56, 66, 76, 117, 255 },
          { 63, 57, 69, 98, 85, 131, 255 },
          { 19, 81, 98, 63, 80, 116, 255 },
          { 215, 56, 60, 63, 68, 105, 255 },
          { 50, 174, 50, 60, 79, 118, 255 },
          { 68, 151, 50, 58, 73, 117, 255 },
          { 104, 182, 53, 57, 79, 127, 255 },
          { 156, 50, 51, 63, 77, 111, 255 },
          { 88, 67, 97, 59, 82, 120, 255 },
          { 114, 81, 46, 65, 103, 132, 255 },
          { 55, 166, 57, 66, 82, 120, 255 },
          { 245, 34, 38, 43, 63, 114, 255 },
          { 203, 68, 45, 47, 60, 118, 255 },
          { 250, 35, 37, 47, 66, 110, 255 },
      },
      {
          // 8 colors
          { 180, 43, 46, 50, 56, 69, 109 },
          { 116, 53, 51, 49, 57, 73, 115 },
          { 79, 70, 49, 50, 59, 74, 117 },
          { 60, 54, 57, 70, 62, 83, 129 },
          { 20, 73, 85, 52, 66, 81, 119 },
          { 213, 56, 52, 49, 53, 62, 104 },
          { 48, 161, 41, 45, 56, 77, 116 },
          { 68, 139, 40, 47, 54, 71, 116 },
          { 123, 166, 42, 43, 52, 76, 130 },
          { 153, 44, 44, 47, 54, 79, 129 },
          { 87, 64, 83, 49, 60, 75, 127 },
          { 131, 68, 43, 48, 73, 96, 130 },
          { 55, 152, 45, 51, 64, 77, 113 },
          { 243, 30, 28, 33, 41, 65, 114 },
          { 202, 56, 35, 36, 42, 63, 123 },
          { 249, 31, 29, 32, 45, 68, 111 },
      }
    };
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const aom_prob av1_default_palette_uv_color_prob
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    [PALETTE_MAX_SIZE - 1][PALETTE_COLOR_CONTEXTS][PALETTE_COLORS - 1] = {
      {
          // 2 colors
          { 228, 255, 128, 128, 128, 128, 128 },
          { 195, 255, 128, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 228, 255, 128, 128, 128, 128, 128 },
          { 71, 255, 128, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 129, 255, 128, 128, 128, 128, 128 },
          { 206, 255, 128, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 136, 255, 128, 128, 128, 128, 128 },
          { 98, 255, 128, 128, 128, 128, 128 },
          { 236, 255, 128, 128, 128, 128, 128 },
          { 222, 255, 128, 128, 128, 128, 128 },
          { 249, 255, 128, 128, 128, 128, 128 },
      },
      {
          // 3 colors
          { 198, 136, 255, 128, 128, 128, 128 },
          { 178, 105, 255, 128, 128, 128, 128 },
          { 100, 206, 255, 128, 128, 128, 128 },
          { 128, 128, 128, 128, 128, 128, 128 },
          { 12, 136, 255, 128, 128, 128, 128 },
          { 219, 134, 255, 128, 128, 128, 128 },
          { 50, 198, 255, 128, 128, 128, 128 },
          { 61, 231, 255, 128, 128, 128, 128 },
          { 110, 209, 255, 128, 128, 128, 128 },
          { 173, 106, 255, 128, 128, 128, 128 },
          { 145, 166, 255, 128, 128, 128, 128 },
          { 156, 175, 255, 128, 128, 128, 128 },
          { 69, 183, 255, 128, 128, 128, 128 },
          { 241, 163, 255, 128, 128, 128, 128 },
          { 224, 160, 255, 128, 128, 128, 128 },
          { 246, 154, 255, 128, 128, 128, 128 },
      },
      {
          // 4 colors
          { 173, 88, 143, 255, 128, 128, 128 },
          { 146, 81, 127, 255, 128, 128, 128 },
          { 84, 134, 102, 255, 128, 128, 128 },
          { 69, 138, 140, 255, 128, 128, 128 },
          { 31, 103, 200, 255, 128, 128, 128 },
          { 217, 101, 139, 255, 128, 128, 128 },
          { 51, 174, 121, 255, 128, 128, 128 },
          { 64, 177, 109, 255, 128, 128, 128 },
          { 96, 179, 145, 255, 128, 128, 128 },
          { 164, 77, 114, 255, 128, 128, 128 },
          { 87, 94, 156, 255, 128, 128, 128 },
          { 105, 57, 173, 255, 128, 128, 128 },
          { 63, 158, 137, 255, 128, 128, 128 },
          { 236, 102, 156, 255, 128, 128, 128 },
          { 197, 115, 153, 255, 128, 128, 128 },
          { 245, 106, 154, 255, 128, 128, 128 },
      },
      {
          // 5 colors
          { 179, 64, 97, 129, 255, 128, 128 },
          { 137, 56, 88, 125, 255, 128, 128 },
          { 82, 107, 61, 118, 255, 128, 128 },
          { 59, 113, 86, 115, 255, 128, 128 },
          { 23, 88, 118, 130, 255, 128, 128 },
          { 213, 66, 90, 125, 255, 128, 128 },
          { 37, 181, 103, 121, 255, 128, 128 },
          { 47, 188, 61, 131, 255, 128, 128 },
          { 104, 185, 103, 144, 255, 128, 128 },
          { 163, 39, 76, 112, 255, 128, 128 },
          { 94, 74, 131, 126, 255, 128, 128 },
          { 142, 42, 103, 163, 255, 128, 128 },
          { 53, 162, 99, 149, 255, 128, 128 },
          { 239, 54, 84, 108, 255, 128, 128 },
          { 203, 84, 110, 147, 255, 128, 128 },
          { 248, 70, 105, 151, 255, 128, 128 },
      },
      {
          // 6 colors
          { 189, 50, 67, 90, 130, 255, 128 },
          { 114, 50, 55, 90, 123, 255, 128 },
          { 66, 76, 54, 82, 128, 255, 128 },
          { 43, 69, 69, 80, 129, 255, 128 },
          { 22, 59, 87, 88, 141, 255, 128 },
          { 203, 49, 68, 87, 122, 255, 128 },
          { 43, 157, 74, 104, 146, 255, 128 },
          { 54, 138, 51, 95, 138, 255, 128 },
          { 82, 171, 58, 102, 146, 255, 128 },
          { 129, 38, 59, 64, 168, 255, 128 },
          { 56, 67, 119, 92, 112, 255, 128 },
          { 96, 62, 53, 132, 82, 255, 128 },
          { 60, 147, 77, 108, 145, 255, 128 },
          { 238, 76, 73, 93, 148, 255, 128 },
          { 189, 86, 73, 103, 157, 255, 128 },
          { 246, 62, 75, 83, 167, 255, 128 },
      },
      {
          // 7 colors
          { 179, 42, 51, 73, 99, 134, 255 },
          { 119, 52, 52, 61, 64, 114, 255 },
          { 53, 77, 35, 65, 71, 131, 255 },
          { 38, 70, 51, 68, 89, 144, 255 },
          { 23, 65, 128, 73, 97, 131, 255 },
          { 210, 47, 52, 63, 81, 143, 255 },
          { 42, 159, 57, 68, 98, 143, 255 },
          { 49, 153, 45, 82, 93, 143, 255 },
          { 81, 169, 52, 72, 113, 151, 255 },
          { 136, 46, 35, 56, 75, 96, 255 },
          { 57, 84, 109, 47, 107, 131, 255 },
          { 128, 78, 57, 36, 128, 85, 255 },
          { 54, 149, 68, 77, 94, 153, 255 },
          { 243, 58, 50, 71, 81, 167, 255 },
          { 189, 92, 64, 70, 121, 173, 255 },
          { 248, 35, 38, 51, 82, 201, 255 },
      },
      {
          // 8 colors
          { 201, 40, 36, 42, 64, 92, 123 },
          { 116, 43, 33, 43, 73, 102, 128 },
          { 46, 77, 37, 69, 62, 78, 150 },
          { 40, 65, 52, 50, 76, 89, 133 },
          { 28, 48, 91, 17, 64, 77, 133 },
          { 218, 43, 43, 37, 56, 72, 163 },
          { 41, 155, 44, 83, 82, 129, 180 },
          { 44, 141, 29, 55, 64, 89, 147 },
          { 92, 166, 48, 45, 59, 126, 179 },
          { 169, 35, 49, 41, 36, 99, 139 },
          { 55, 77, 77, 56, 60, 75, 156 },
          { 155, 81, 51, 64, 57, 182, 255 },
          { 60, 134, 49, 49, 93, 128, 174 },
          { 244, 98, 51, 46, 22, 73, 238 },
          { 189, 70, 40, 87, 93, 79, 201 },
          { 248, 54, 49, 40, 29, 42, 227 },
      }
    };
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static const int palette_color_context_lookup[PALETTE_COLOR_CONTEXTS] = {
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  // (3, 0, 0, 0), (3, 2, 0, 0), (3, 3, 2, 0), (3, 3, 2, 2),
  3993, 4235, 4378, 4380,
  // (4, 3, 3, 0), (5, 0, 0, 0), (5, 3, 0, 0), (5, 3, 2, 0),
  5720, 6655, 7018, 7040,
  // (5, 5, 0, 0), (6, 2, 0, 0), (6, 2, 2, 0), (6, 4, 0, 0),
  7260, 8228, 8250, 8470,
  // (7, 3, 0, 0), (8, 0, 0, 0), (8, 2, 0, 0), (10, 0, 0, 0)
  9680, 10648, 10890, 13310
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};

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const aom_tree_index av1_tx_size_tree[TX_SIZES - 1][TREE_SIZE(TX_SIZES)] = {
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  {
      // Max tx_size is 8X8
      -TX_4X4, -TX_8X8,
  },
  {
      // Max tx_size is 16X16
      -TX_4X4, 2, -TX_8X8, -TX_16X16,
  },
  {
      // Max tx_size is 32X32
      -TX_4X4, 2, -TX_8X8, 4, -TX_16X16, -TX_32X32,
  },
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};

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static const aom_prob
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    default_tx_size_prob[TX_SIZES - 1][TX_SIZE_CONTEXTS][TX_SIZES - 1] = {
      {
          // Max tx_size is 8X8
          { 100 },
          { 66 },
      },
      {
          // Max tx_size is 16X16
          { 20, 152 },
          { 15, 101 },
      },
      {
          // Max tx_size is 32X32
          { 3, 136, 37 },
          { 5, 52, 13 },
      },
    };

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int av1_get_palette_color_context(const uint8_t *color_map, int cols, int r,
                                  int c, int n, int *color_order) {
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  int i, j, max, max_idx, temp;
  int scores[PALETTE_MAX_SIZE + 10];
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  int weights[4] = { 3, 2, 3, 2 };
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  int color_ctx = 0;
  int color_neighbors[4];

  assert(n <= PALETTE_MAX_SIZE);

  if (c - 1 >= 0)
    color_neighbors[0] = color_map[r * cols + c - 1];
  else
    color_neighbors[0] = -1;
  if (c - 1 >= 0 && r - 1 >= 0)
    color_neighbors[1] = color_map[(r - 1) * cols + c - 1];
  else
    color_neighbors[1] = -1;
  if (r - 1 >= 0)
    color_neighbors[2] = color_map[(r - 1) * cols + c];
  else
    color_neighbors[2] = -1;
  if (r - 1 >= 0 && c + 1 <= cols - 1)
    color_neighbors[3] = color_map[(r - 1) * cols + c + 1];
  else
    color_neighbors[3] = -1;

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  for (i = 0; i < PALETTE_MAX_SIZE; ++i) color_order[i] = i;
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  memset(scores, 0, PALETTE_MAX_SIZE * sizeof(scores[0]));
  for (i = 0; i < 4; ++i) {
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    if (color_neighbors[i] >= 0) scores[color_neighbors[i]] += weights[i];
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  }

  for (i = 0; i < 4; ++i) {
    max = scores[i];
    max_idx = i;
    j = i + 1;
    while (j < n) {
      if (scores[j] > max) {
        max = scores[j];
        max_idx = j;
      }
      ++j;
    }

    if (max_idx != i) {
      temp = scores[i];
      scores[i] = scores[max_idx];
      scores[max_idx] = temp;

      temp = color_order[i];
      color_order[i] = color_order[max_idx];
      color_order[max_idx] = temp;
    }
  }

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  for (i = 0; i < 4; ++i) color_ctx = color_ctx * 11 + scores[i];
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  for (i = 0; i < PALETTE_COLOR_CONTEXTS; ++i)
    if (color_ctx == palette_color_context_lookup[i]) {
      color_ctx = i;
      break;
    }

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  if (color_ctx >= PALETTE_COLOR_CONTEXTS) color_ctx = 0;
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  return color_ctx;
}

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#if CONFIG_VAR_TX
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static const aom_prob default_txfm_partition_probs[TXFM_PARTITION_CONTEXTS] = {
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  192, 128, 64, 192, 128, 64, 192, 128, 64,
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};
#endif

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static const aom_prob default_skip_probs[SKIP_CONTEXTS] = { 192, 128, 64 };
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#if CONFIG_EXT_INTERP
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static const aom_prob default_switchable_interp_prob
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    [SWITCHABLE_FILTER_CONTEXTS][SWITCHABLE_FILTERS - 1] = {
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#if CONFIG_DUAL_FILTER
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      { 235, 192, 128, 128 }, { 36, 243, 208, 128 }, { 34, 16, 128, 128 },
      { 36, 243, 48, 128 },   { 34, 16, 128, 128 },  { 149, 160, 128, 128 },

      { 235, 192, 128, 128 }, { 36, 243, 208, 128 }, { 34, 16, 128, 128 },
      { 36, 243, 48, 128 },   { 34, 16, 128, 128 },  { 149, 160, 128, 128 },

      { 235, 192, 128, 128 }, { 36, 243, 208, 128 }, { 34, 16, 128, 128 },
      { 36, 243, 48, 128 },   { 34, 16, 128, 128 },  { 149, 160, 128, 128 },

      { 235, 192, 128, 128 }, { 36, 243, 208, 128 }, { 34, 16, 128, 128 },
      { 36, 243, 48, 128 },   { 34, 16, 128, 128 },  { 149, 160, 128, 128 },
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#else
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      { 235, 192, 128, 128 }, { 36, 243, 208, 128 }, { 34, 16, 128, 128 },
      { 36, 243, 48, 128 },   { 34, 16, 128, 128 },  { 149, 160, 128, 128 },
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#endif
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    };
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#else  // CONFIG_EXT_INTERP
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#if CONFIG_DUAL_FILTER
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static const aom_prob default_switchable_interp_prob
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    [SWITCHABLE_FILTER_CONTEXTS][SWITCHABLE_FILTERS - 1] = {
      { 235, 162 }, { 36, 255 }, { 34, 3 }, { 149, 144 },

      { 235, 162 }, { 36, 255 }, { 34, 3 }, { 10, 3 },

      { 235, 162 }, { 36, 255 }, { 34, 3 }, { 149, 144 },

      { 235, 162 }, { 36, 255 }, { 34, 3 }, { 10, 3 },
    };
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#else
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static const aom_prob default_switchable_interp_prob
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    [SWITCHABLE_FILTER_CONTEXTS][SWITCHABLE_FILTERS - 1] = {
      { 235, 162 }, { 36, 255 }, { 34, 3 }, { 149, 144 },
    };
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#endif
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#endif  // CONFIG_EXT_INTERP
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#if CONFIG_EXT_TX
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/* clang-format off */
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const aom_tree_index av1_ext_tx_inter_tree[EXT_TX_SETS_INTER]
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                                           [TREE_SIZE(TX_TYPES)] = {
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  { // ToDo(yaowu): remove used entry 0.
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    0
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  }, {
    -IDTX, 2,
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    4, 14,
    6, 8,
    -V_DCT, -H_DCT,
    10, 12,
    -V_ADST, -H_ADST,
    -V_FLIPADST, -H_FLIPADST,
    -DCT_DCT, 16,
    18, 24,
    20, 22,
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    -ADST_DCT, -DCT_ADST,
    -FLIPADST_DCT, -DCT_FLIPADST,
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    26, 28,
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    -ADST_ADST, -FLIPADST_FLIPADST,
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    -ADST_FLIPADST, -FLIPADST_ADST
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  }, {
    -IDTX, 2,
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    4, 6,
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