/*
 *  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.
 */

#include <assert.h>

#include "vp10/common/scan.h"

DECLARE_ALIGNED(16, static const int16_t, default_scan_4x4[16]) = {
  0,  4,  1,  5,
  8,  2, 12,  9,
  3,  6, 13, 10,
  7, 14, 11, 15,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t, mcol_scan_4x4[16]) = {
  0, 4, 8, 12,
  1, 5, 9, 13,
  2, 6, 10, 14,
  3, 7, 11, 15,
};

DECLARE_ALIGNED(16, static const int16_t, mrow_scan_4x4[16]) = {
  0, 1, 2, 3,
  4, 5, 6, 7,
  8, 9, 10, 11,
  12, 13, 14, 15,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t, col_scan_4x4[16]) = {
  0,  4,  8,  1,
  12,  5,  9,  2,
  13,  6, 10,  3,
  7, 14, 11, 15,
};

DECLARE_ALIGNED(16, static const int16_t, row_scan_4x4[16]) = {
  0,  1,  4,  2,
  5,  3,  6,  8,
  9,  7, 12, 10,
  13, 11, 14, 15,
};

DECLARE_ALIGNED(16, static const int16_t, default_scan_8x8[64]) = {
  0,   8,  1, 16,  9,  2, 17, 24,
  10,  3, 18, 25, 32, 11,  4, 26,
  33, 19, 40, 12, 34, 27,  5, 41,
  20, 48, 13, 35, 42, 28, 21,  6,
  49, 56, 36, 43, 29,  7, 14, 50,
  57, 44, 22, 37, 15, 51, 58, 30,
  45, 23, 52, 59, 38, 31, 60, 53,
  46, 39, 61, 54, 47, 62, 55, 63,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t, mcol_scan_8x8[64]) = {
  0,   8,  16,  24,  32,  40,  48,  56,
  1,   9,  17,  25,  33,  41,  49,  57,
  2,  10,  18,  26,  34,  42,  50,  58,
  3,  11,  19,  27,  35,  43,  51,  59,
  4,  12,  20,  28,  36,  44,  52,  60,
  5,  13,  21,  29,  37,  45,  53,  61,
  6,  14,  22,  30,  38,  46,  54,  62,
  7,  15,  23,  31,  39,  47,  55,  63,
};

DECLARE_ALIGNED(16, static const int16_t, mrow_scan_8x8[64]) = {
  0,    1,   2,   3,   4,   5,   6,   7,
  8,    9,  10,  11,  12,  13,  14,  15,
  16,  17,  18,  19,  20,  21,  22,  23,
  24,  25,  26,  27,  28,  29,  30,  31,
  32,  33,  34,  35,  36,  37,  38,  39,
  40,  41,  42,  43,  44,  45,  46,  47,
  48,  49,  50,  51,  52,  53,  54,  55,
  56,  57,  58,  59,  60,  61,  62,  63,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t, col_scan_8x8[64]) = {
  0,  8, 16,  1, 24,  9, 32, 17,
  2, 40, 25, 10, 33, 18, 48,  3,
  26, 41, 11, 56, 19, 34,  4, 49,
  27, 42, 12, 35, 20, 57, 50, 28,
  5, 43, 13, 36, 58, 51, 21, 44,
  6, 29, 59, 37, 14, 52, 22,  7,
  45, 60, 30, 15, 38, 53, 23, 46,
  31, 61, 39, 54, 47, 62, 55, 63,
};

DECLARE_ALIGNED(16, static const int16_t, row_scan_8x8[64]) = {
  0,  1,  2,  8,  9,  3, 16, 10,
  4, 17, 11, 24,  5, 18, 25, 12,
  19, 26, 32,  6, 13, 20, 33, 27,
  7, 34, 40, 21, 28, 41, 14, 35,
  48, 42, 29, 36, 49, 22, 43, 15,
  56, 37, 50, 44, 30, 57, 23, 51,
  58, 45, 38, 52, 31, 59, 53, 46,
  60, 39, 61, 47, 54, 55, 62, 63,
};

DECLARE_ALIGNED(16, static const int16_t, default_scan_16x16[256]) = {
  0, 16, 1, 32, 17, 2, 48, 33, 18, 3, 64, 34, 49, 19, 65, 80,
  50, 4, 35, 66, 20, 81, 96, 51, 5, 36, 82, 97, 67, 112, 21, 52,
  98, 37, 83, 113, 6, 68, 128, 53, 22, 99, 114, 84, 7, 129, 38, 69,
  100, 115, 144, 130, 85, 54, 23, 8, 145, 39, 70, 116, 101, 131, 160, 146,
  55, 86, 24, 71, 132, 117, 161, 40, 9, 102, 147, 176, 162, 87, 56, 25,
  133, 118, 177, 148, 72, 103, 41, 163, 10, 192, 178, 88, 57, 134, 149, 119,
  26, 164, 73, 104, 193, 42, 179, 208, 11, 135, 89, 165, 120, 150, 58, 194,
  180, 27, 74, 209, 105, 151, 136, 43, 90, 224, 166, 195, 181, 121, 210, 59,
  12, 152, 106, 167, 196, 75, 137, 225, 211, 240, 182, 122, 91, 28, 197, 13,
  226, 168, 183, 153, 44, 212, 138, 107, 241, 60, 29, 123, 198, 184, 227, 169,
  242, 76, 213, 154, 45, 92, 14, 199, 139, 61, 228, 214, 170, 185, 243, 108,
  77, 155, 30, 15, 200, 229, 124, 215, 244, 93, 46, 186, 171, 201, 109, 140,
  230, 62, 216, 245, 31, 125, 78, 156, 231, 47, 187, 202, 217, 94, 246, 141,
  63, 232, 172, 110, 247, 157, 79, 218, 203, 126, 233, 188, 248, 95, 173, 142,
  219, 111, 249, 234, 158, 127, 189, 204, 250, 235, 143, 174, 220, 205, 159,
  251,
  190, 221, 175, 236, 237, 191, 206, 252, 222, 253, 207, 238, 223, 254, 239,
  255,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t, mcol_scan_16x16[256]) = {
  0, 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224, 240,
  1, 17, 33, 49, 65, 81, 97, 113, 129, 145, 161, 177, 193, 209, 225, 241,
  2, 18, 34, 50, 66, 82, 98, 114, 130, 146, 162, 178, 194, 210, 226, 242,
  3, 19, 35, 51, 67, 83, 99, 115, 131, 147, 163, 179, 195, 211, 227, 243,
  4, 20, 36, 52, 68, 84, 100, 116, 132, 148, 164, 180, 196, 212, 228, 244,
  5, 21, 37, 53, 69, 85, 101, 117, 133, 149, 165, 181, 197, 213, 229, 245,
  6, 22, 38, 54, 70, 86, 102, 118, 134, 150, 166, 182, 198, 214, 230, 246,
  7, 23, 39, 55, 71, 87, 103, 119, 135, 151, 167, 183, 199, 215, 231, 247,
  8, 24, 40, 56, 72, 88, 104, 120, 136, 152, 168, 184, 200, 216, 232, 248,
  9, 25, 41, 57, 73, 89, 105, 121, 137, 153, 169, 185, 201, 217, 233, 249,
  10, 26, 42, 58, 74, 90, 106, 122, 138, 154, 170, 186, 202, 218, 234, 250,
  11, 27, 43, 59, 75, 91, 107, 123, 139, 155, 171, 187, 203, 219, 235, 251,
  12, 28, 44, 60, 76, 92, 108, 124, 140, 156, 172, 188, 204, 220, 236, 252,
  13, 29, 45, 61, 77, 93, 109, 125, 141, 157, 173, 189, 205, 221, 237, 253,
  14, 30, 46, 62, 78, 94, 110, 126, 142, 158, 174, 190, 206, 222, 238, 254,
  15, 31, 47, 63, 79, 95, 111, 127, 143, 159, 175, 191, 207, 223, 239, 255,
};

DECLARE_ALIGNED(16, static const int16_t, mrow_scan_16x16[256]) = {
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
  32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
  48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
  64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
  80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
  96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
  112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124,
  125, 126, 127,
  128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140,
  141, 142, 143,
  144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156,
  157, 158, 159,
  160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172,
  173, 174, 175,
  176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188,
  189, 190, 191,
  192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204,
  205, 206, 207,
  208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220,
  221, 222, 223,
  224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236,
  237, 238, 239,
  240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252,
  253, 254, 255,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t, col_scan_16x16[256]) = {
  0, 16, 32, 48, 1, 64, 17, 80, 33, 96, 49, 2, 65, 112, 18, 81,
  34, 128, 50, 97, 3, 66, 144, 19, 113, 35, 82, 160, 98, 51, 129, 4,
  67, 176, 20, 114, 145, 83, 36, 99, 130, 52, 192, 5, 161, 68, 115, 21,
  146, 84, 208, 177, 37, 131, 100, 53, 162, 224, 69, 6, 116, 193, 147, 85,
  22, 240, 132, 38, 178, 101, 163, 54, 209, 117, 70, 7, 148, 194, 86, 179,
  225, 23, 133, 39, 164, 8, 102, 210, 241, 55, 195, 118, 149, 71, 180, 24,
  87, 226, 134, 165, 211, 40, 103, 56, 72, 150, 196, 242, 119, 9, 181, 227,
  88, 166, 25, 135, 41, 104, 212, 57, 151, 197, 120, 73, 243, 182, 136, 167,
  213, 89, 10, 228, 105, 152, 198, 26, 42, 121, 183, 244, 168, 58, 137, 229,
  74, 214, 90, 153, 199, 184, 11, 106, 245, 27, 122, 230, 169, 43, 215, 59,
  200, 138, 185, 246, 75, 12, 91, 154, 216, 231, 107, 28, 44, 201, 123, 170,
  60, 247, 232, 76, 139, 13, 92, 217, 186, 248, 155, 108, 29, 124, 45, 202,
  233, 171, 61, 14, 77, 140, 15, 249, 93, 30, 187, 156, 218, 46, 109, 125,
  62, 172, 78, 203, 31, 141, 234, 94, 47, 188, 63, 157, 110, 250, 219, 79,
  126, 204, 173, 142, 95, 189, 111, 235, 158, 220, 251, 127, 174, 143, 205,
  236,
  159, 190, 221, 252, 175, 206, 237, 191, 253, 222, 238, 207, 254, 223, 239,
  255,
};

DECLARE_ALIGNED(16, static const int16_t, row_scan_16x16[256]) = {
  0, 1, 2, 16, 3, 17, 4, 18, 32, 5, 33, 19, 6, 34, 48, 20,
  49, 7, 35, 21, 50, 64, 8, 36, 65, 22, 51, 37, 80, 9, 66, 52,
  23, 38, 81, 67, 10, 53, 24, 82, 68, 96, 39, 11, 54, 83, 97, 69,
  25, 98, 84, 40, 112, 55, 12, 70, 99, 113, 85, 26, 41, 56, 114, 100,
  13, 71, 128, 86, 27, 115, 101, 129, 42, 57, 72, 116, 14, 87, 130, 102,
  144, 73, 131, 117, 28, 58, 15, 88, 43, 145, 103, 132, 146, 118, 74, 160,
  89, 133, 104, 29, 59, 147, 119, 44, 161, 148, 90, 105, 134, 162, 120, 176,
  75, 135, 149, 30, 60, 163, 177, 45, 121, 91, 106, 164, 178, 150, 192, 136,
  165, 179, 31, 151, 193, 76, 122, 61, 137, 194, 107, 152, 180, 208, 46, 166,
  167, 195, 92, 181, 138, 209, 123, 153, 224, 196, 77, 168, 210, 182, 240, 108,
  197, 62, 154, 225, 183, 169, 211, 47, 139, 93, 184, 226, 212, 241, 198, 170,
  124, 155, 199, 78, 213, 185, 109, 227, 200, 63, 228, 242, 140, 214, 171, 186,
  156, 229, 243, 125, 94, 201, 244, 215, 216, 230, 141, 187, 202, 79, 172, 110,
  157, 245, 217, 231, 95, 246, 232, 126, 203, 247, 233, 173, 218, 142, 111,
  158,
  188, 248, 127, 234, 219, 249, 189, 204, 143, 174, 159, 250, 235, 205, 220,
  175,
  190, 251, 221, 191, 206, 236, 207, 237, 252, 222, 253, 223, 238, 239, 254,
  255,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t, mcol_scan_32x32[1024]) = {
  0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, 480,
  512, 544, 576, 608, 640, 672, 704, 736, 768, 800, 832, 864, 896, 928, 960,
  992,
  1, 33, 65, 97, 129, 161, 193, 225, 257, 289, 321, 353, 385, 417, 449, 481,
  513, 545, 577, 609, 641, 673, 705, 737, 769, 801, 833, 865, 897, 929, 961,
  993,
  2, 34, 66, 98, 130, 162, 194, 226, 258, 290, 322, 354, 386, 418, 450, 482,
  514, 546, 578, 610, 642, 674, 706, 738, 770, 802, 834, 866, 898, 930, 962,
  994,
  3, 35, 67, 99, 131, 163, 195, 227, 259, 291, 323, 355, 387, 419, 451, 483,
  515, 547, 579, 611, 643, 675, 707, 739, 771, 803, 835, 867, 899, 931, 963,
  995,
  4, 36, 68, 100, 132, 164, 196, 228, 260, 292, 324, 356, 388, 420, 452, 484,
  516, 548, 580, 612, 644, 676, 708, 740, 772, 804, 836, 868, 900, 932, 964,
  996,
  5, 37, 69, 101, 133, 165, 197, 229, 261, 293, 325, 357, 389, 421, 453, 485,
  517, 549, 581, 613, 645, 677, 709, 741, 773, 805, 837, 869, 901, 933, 965,
  997,
  6, 38, 70, 102, 134, 166, 198, 230, 262, 294, 326, 358, 390, 422, 454, 486,
  518, 550, 582, 614, 646, 678, 710, 742, 774, 806, 838, 870, 902, 934, 966,
  998,
  7, 39, 71, 103, 135, 167, 199, 231, 263, 295, 327, 359, 391, 423, 455, 487,
  519, 551, 583, 615, 647, 679, 711, 743, 775, 807, 839, 871, 903, 935, 967,
  999,
  8, 40, 72, 104, 136, 168, 200, 232, 264, 296, 328, 360, 392, 424, 456, 488,
  520, 552, 584, 616, 648, 680, 712, 744, 776, 808, 840, 872, 904, 936, 968,
  1000,
  9, 41, 73, 105, 137, 169, 201, 233, 265, 297, 329, 361, 393, 425, 457, 489,
  521, 553, 585, 617, 649, 681, 713, 745, 777, 809, 841, 873, 905, 937, 969,
  1001,
  10, 42, 74, 106, 138, 170, 202, 234, 266, 298, 330, 362, 394, 426, 458,
  490, 522, 554, 586, 618, 650, 682, 714, 746, 778, 810, 842, 874, 906,
  938, 970, 1002,
  11, 43, 75, 107, 139, 171, 203, 235, 267, 299, 331, 363, 395, 427, 459,
  491, 523, 555, 587, 619, 651, 683, 715, 747, 779, 811, 843, 875, 907,
  939, 971, 1003,
  12, 44, 76, 108, 140, 172, 204, 236, 268, 300, 332, 364, 396, 428, 460,
  492, 524, 556, 588, 620, 652, 684, 716, 748, 780, 812, 844, 876, 908,
  940, 972, 1004,
  13, 45, 77, 109, 141, 173, 205, 237, 269, 301, 333, 365, 397, 429, 461,
  493, 525, 557, 589, 621, 653, 685, 717, 749, 781, 813, 845, 877, 909,
  941, 973, 1005,
  14, 46, 78, 110, 142, 174, 206, 238, 270, 302, 334, 366, 398, 430, 462,
  494, 526, 558, 590, 622, 654, 686, 718, 750, 782, 814, 846, 878, 910,
  942, 974, 1006,
  15, 47, 79, 111, 143, 175, 207, 239, 271, 303, 335, 367, 399, 431, 463,
  495, 527, 559, 591, 623, 655, 687, 719, 751, 783, 815, 847, 879, 911,
  943, 975, 1007,
  16, 48, 80, 112, 144, 176, 208, 240, 272, 304, 336, 368, 400, 432, 464,
  496, 528, 560, 592, 624, 656, 688, 720, 752, 784, 816, 848, 880, 912,
  944, 976, 1008,
  17, 49, 81, 113, 145, 177, 209, 241, 273, 305, 337, 369, 401, 433, 465,
  497, 529, 561, 593, 625, 657, 689, 721, 753, 785, 817, 849, 881, 913,
  945, 977, 1009,
  18, 50, 82, 114, 146, 178, 210, 242, 274, 306, 338, 370, 402, 434, 466,
  498, 530, 562, 594, 626, 658, 690, 722, 754, 786, 818, 850, 882, 914,
  946, 978, 1010,
  19, 51, 83, 115, 147, 179, 211, 243, 275, 307, 339, 371, 403, 435, 467,
  499, 531, 563, 595, 627, 659, 691, 723, 755, 787, 819, 851, 883, 915,
  947, 979, 1011,
  20, 52, 84, 116, 148, 180, 212, 244, 276, 308, 340, 372, 404, 436, 468,
  500, 532, 564, 596, 628, 660, 692, 724, 756, 788, 820, 852, 884, 916,
  948, 980, 1012,
  21, 53, 85, 117, 149, 181, 213, 245, 277, 309, 341, 373, 405, 437, 469,
  501, 533, 565, 597, 629, 661, 693, 725, 757, 789, 821, 853, 885, 917,
  949, 981, 1013,
  22, 54, 86, 118, 150, 182, 214, 246, 278, 310, 342, 374, 406, 438, 470,
  502, 534, 566, 598, 630, 662, 694, 726, 758, 790, 822, 854, 886, 918,
  950, 982, 1014,
  23, 55, 87, 119, 151, 183, 215, 247, 279, 311, 343, 375, 407, 439, 471,
  503, 535, 567, 599, 631, 663, 695, 727, 759, 791, 823, 855, 887, 919,
  951, 983, 1015,
  24, 56, 88, 120, 152, 184, 216, 248, 280, 312, 344, 376, 408, 440, 472,
  504, 536, 568, 600, 632, 664, 696, 728, 760, 792, 824, 856, 888, 920,
  952, 984, 1016,
  25, 57, 89, 121, 153, 185, 217, 249, 281, 313, 345, 377, 409, 441, 473,
  505, 537, 569, 601, 633, 665, 697, 729, 761, 793, 825, 857, 889, 921,
  953, 985, 1017,
  26, 58, 90, 122, 154, 186, 218, 250, 282, 314, 346, 378, 410, 442, 474,
  506, 538, 570, 602, 634, 666, 698, 730, 762, 794, 826, 858, 890, 922,
  954, 986, 1018,
  27, 59, 91, 123, 155, 187, 219, 251, 283, 315, 347, 379, 411, 443, 475,
  507, 539, 571, 603, 635, 667, 699, 731, 763, 795, 827, 859, 891, 923,
  955, 987, 1019,
  28, 60, 92, 124, 156, 188, 220, 252, 284, 316, 348, 380, 412, 444, 476,
  508, 540, 572, 604, 636, 668, 700, 732, 764, 796, 828, 860, 892, 924,
  956, 988, 1020,
  29, 61, 93, 125, 157, 189, 221, 253, 285, 317, 349, 381, 413, 445, 477,
  509, 541, 573, 605, 637, 669, 701, 733, 765, 797, 829, 861, 893, 925,
  957, 989, 1021,
  30, 62, 94, 126, 158, 190, 222, 254, 286, 318, 350, 382, 414, 446, 478,
  510, 542, 574, 606, 638, 670, 702, 734, 766, 798, 830, 862, 894, 926,
  958, 990, 1022,
  31, 63, 95, 127, 159, 191, 223, 255, 287, 319, 351, 383, 415, 447, 479,
  511, 543, 575, 607, 639, 671, 703, 735, 767, 799, 831, 863, 895, 927,
  959, 991, 1023,
};

DECLARE_ALIGNED(16, static const int16_t, mrow_scan_32x32[1024]) = {
    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
    19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
    32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
    48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
    64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
    80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
    96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
    110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122,
    123, 124, 125, 126, 127,
    128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140,
    141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153,
    154, 155, 156, 157, 158, 159,
    160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172,
    173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185,
    186, 187, 188, 189, 190, 191,
    192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204,
    205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217,
    218, 219, 220, 221, 222, 223,
    224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236,
    237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249,
    250, 251, 252, 253, 254, 255,
    256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268,
    269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281,
    282, 283, 284, 285, 286, 287,
    288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300,
    301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313,
    314, 315, 316, 317, 318, 319,
    320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332,
    333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345,
    346, 347, 348, 349, 350, 351,
    352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364,
    365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377,
    378, 379, 380, 381, 382, 383,
    384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396,
    397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409,
    410, 411, 412, 413, 414, 415,
    416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428,
    429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441,
    442, 443, 444, 445, 446, 447,
    448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460,
    461, 462, 463, 464, 465, 466, 467, 468, 469, 470, 471, 472, 473,
    474, 475, 476, 477, 478, 479,
    480, 481, 482, 483, 484, 485, 486, 487, 488, 489, 490, 491, 492,
    493, 494, 495, 496, 497, 498, 499, 500, 501, 502, 503, 504, 505,
    506, 507, 508, 509, 510, 511,
    512, 513, 514, 515, 516, 517, 518, 519, 520, 521, 522, 523, 524,
    525, 526, 527, 528, 529, 530, 531, 532, 533, 534, 535, 536, 537,
    538, 539, 540, 541, 542, 543,
    544, 545, 546, 547, 548, 549, 550, 551, 552, 553, 554, 555, 556,
    557, 558, 559, 560, 561, 562, 563, 564, 565, 566, 567, 568, 569,
    570, 571, 572, 573, 574, 575,
    576, 577, 578, 579, 580, 581, 582, 583, 584, 585, 586, 587, 588,
    589, 590, 591, 592, 593, 594, 595, 596, 597, 598, 599, 600, 601,
    602, 603, 604, 605, 606, 607,
    608, 609, 610, 611, 612, 613, 614, 615, 616, 617, 618, 619, 620,
    621, 622, 623, 624, 625, 626, 627, 628, 629, 630, 631, 632, 633,
    634, 635, 636, 637, 638, 639,
    640, 641, 642, 643, 644, 645, 646, 647, 648, 649, 650, 651, 652,
    653, 654, 655, 656, 657, 658, 659, 660, 661, 662, 663, 664, 665,
    666, 667, 668, 669, 670, 671,
    672, 673, 674, 675, 676, 677, 678, 679, 680, 681, 682, 683, 684,
    685, 686, 687, 688, 689, 690, 691, 692, 693, 694, 695, 696, 697,
    698, 699, 700, 701, 702, 703,
    704, 705, 706, 707, 708, 709, 710, 711, 712, 713, 714, 715, 716,
    717, 718, 719, 720, 721, 722, 723, 724, 725, 726, 727, 728, 729,
    730, 731, 732, 733, 734, 735,
    736, 737, 738, 739, 740, 741, 742, 743, 744, 745, 746, 747, 748,
    749, 750, 751, 752, 753, 754, 755, 756, 757, 758, 759, 760, 761,
    762, 763, 764, 765, 766, 767,
    768, 769, 770, 771, 772, 773, 774, 775, 776, 777, 778, 779, 780,
    781, 782, 783, 784, 785, 786, 787, 788, 789, 790, 791, 792, 793,
    794, 795, 796, 797, 798, 799,
    800, 801, 802, 803, 804, 805, 806, 807, 808, 809, 810, 811, 812,
    813, 814, 815, 816, 817, 818, 819, 820, 821, 822, 823, 824, 825,
    826, 827, 828, 829, 830, 831,
    832, 833, 834, 835, 836, 837, 838, 839, 840, 841, 842, 843, 844,
    845, 846, 847, 848, 849, 850, 851, 852, 853, 854, 855, 856, 857,
    858, 859, 860, 861, 862, 863,
    864, 865, 866, 867, 868, 869, 870, 871, 872, 873, 874, 875, 876,
    877, 878, 879, 880, 881, 882, 883, 884, 885, 886, 887, 888, 889,
    890, 891, 892, 893, 894, 895,
    896, 897, 898, 899, 900, 901, 902, 903, 904, 905, 906, 907, 908,
    909, 910, 911, 912, 913, 914, 915, 916, 917, 918, 919, 920, 921,
    922, 923, 924, 925, 926, 927,
    928, 929, 930, 931, 932, 933, 934, 935, 936, 937, 938, 939, 940,
    941, 942, 943, 944, 945, 946, 947, 948, 949, 950, 951, 952, 953,
    954, 955, 956, 957, 958, 959,
    960, 961, 962, 963, 964, 965, 966, 967, 968, 969, 970, 971, 972,
    973, 974, 975, 976, 977, 978, 979, 980, 981, 982, 983, 984, 985,
    986, 987, 988, 989, 990, 991,
    992, 993, 994, 995, 996, 997, 998, 999, 1000, 1001, 1002, 1003,
    1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013, 1014,
    1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t, default_scan_32x32[1024]) = {
  0, 32, 1, 64, 33, 2, 96, 65, 34, 128, 3, 97, 66, 160,
  129, 35, 98, 4, 67, 130, 161, 192, 36, 99, 224, 5, 162, 193,
  68, 131, 37, 100,
  225, 194, 256, 163, 69, 132, 6, 226, 257, 288, 195, 101, 164, 38,
  258, 7, 227, 289, 133, 320, 70, 196, 165, 290, 259, 228, 39, 321,
  102, 352, 8, 197,
  71, 134, 322, 291, 260, 353, 384, 229, 166, 103, 40, 354, 323, 292,
  135, 385, 198, 261, 72, 9, 416, 167, 386, 355, 230, 324, 104, 293,
  41, 417, 199, 136,
  262, 387, 448, 325, 356, 10, 73, 418, 231, 168, 449, 294, 388, 105,
  419, 263, 42, 200, 357, 450, 137, 480, 74, 326, 232, 11, 389, 169,
  295, 420, 106, 451,
  481, 358, 264, 327, 201, 43, 138, 512, 482, 390, 296, 233, 170, 421,
  75, 452, 359, 12, 513, 265, 483, 328, 107, 202, 514, 544, 422, 391,
  453, 139, 44, 234,
  484, 297, 360, 171, 76, 515, 545, 266, 329, 454, 13, 423, 203, 108,
  546, 485, 576, 298, 235, 140, 361, 330, 172, 547, 45, 455, 267, 577,
  486, 77, 204, 362,
  608, 14, 299, 578, 109, 236, 487, 609, 331, 141, 579, 46, 15, 173,
  610, 363, 78, 205, 16, 110, 237, 611, 142, 47, 174, 79, 206, 17,
  111, 238, 48, 143,
  80, 175, 112, 207, 49, 18, 239, 81, 113, 19, 50, 82, 114, 51,
  83, 115, 640, 516, 392, 268, 144, 20, 672, 641, 548, 517, 424,
  393, 300, 269, 176, 145,
  52, 21, 704, 673, 642, 580, 549, 518, 456, 425, 394, 332, 301,
  270, 208, 177, 146, 84, 53, 22, 736, 705, 674, 643, 612, 581,
  550, 519, 488, 457, 426, 395,
  364, 333, 302, 271, 240, 209, 178, 147, 116, 85, 54, 23, 737,
  706, 675, 613, 582, 551, 489, 458, 427, 365, 334, 303, 241,
  210, 179, 117, 86, 55, 738, 707,
  614, 583, 490, 459, 366, 335, 242, 211, 118, 87, 739, 615, 491,
  367, 243, 119, 768, 644, 520, 396, 272, 148, 24, 800, 769, 676,
  645, 552, 521, 428, 397, 304,
  273, 180, 149, 56, 25, 832, 801, 770, 708, 677, 646, 584, 553,
  522, 460, 429, 398, 336, 305, 274, 212, 181, 150, 88, 57, 26,
  864, 833, 802, 771, 740, 709,
  678, 647, 616, 585, 554, 523, 492, 461, 430, 399, 368, 337, 306,
  275, 244, 213, 182, 151, 120, 89, 58, 27, 865, 834, 803, 741,
  710, 679, 617, 586, 555, 493,
  462, 431, 369, 338, 307, 245, 214, 183, 121, 90, 59, 866, 835,
  742, 711, 618, 587, 494, 463, 370, 339, 246, 215, 122, 91, 867,
  743, 619, 495, 371, 247, 123,
  896, 772, 648, 524, 400, 276, 152, 28, 928, 897, 804, 773, 680,
  649, 556, 525, 432, 401, 308, 277, 184, 153, 60, 29, 960, 929,
  898, 836, 805, 774, 712, 681,
  650, 588, 557, 526, 464, 433, 402, 340, 309, 278, 216, 185, 154,
  92, 61, 30, 992, 961, 930, 899, 868, 837, 806, 775, 744, 713, 682,
  651, 620, 589, 558, 527,
  496, 465, 434, 403, 372, 341, 310, 279, 248, 217, 186, 155, 124,
  93, 62, 31, 993, 962, 931, 869, 838, 807, 745, 714, 683, 621, 590,
  559, 497, 466, 435, 373,
  342, 311, 249, 218, 187, 125, 94, 63, 994, 963, 870, 839, 746, 715,
  622, 591, 498, 467, 374, 343, 250, 219, 126, 95, 995, 871, 747, 623,
  499, 375, 251, 127,
  900, 776, 652, 528, 404, 280, 156, 932, 901, 808, 777, 684, 653, 560,
  529, 436, 405, 312, 281, 188, 157, 964, 933, 902, 840, 809, 778, 716,
  685, 654, 592, 561,
  530, 468, 437, 406, 344, 313, 282, 220, 189, 158, 996, 965, 934, 903,
  872, 841, 810, 779, 748, 717, 686, 655, 624, 593, 562, 531, 500, 469,
  438, 407, 376, 345,
  314, 283, 252, 221, 190, 159, 997, 966, 935, 873, 842, 811, 749, 718,
  687, 625, 594, 563, 501, 470, 439, 377, 346, 315, 253, 222, 191, 998,
  967, 874, 843, 750,
  719, 626, 595, 502, 471, 378, 347, 254, 223, 999, 875, 751, 627, 503,
  379, 255, 904, 780, 656, 532, 408, 284, 936, 905, 812, 781, 688, 657,
  564, 533, 440, 409,
  316, 285, 968, 937, 906, 844, 813, 782, 720, 689, 658, 596, 565, 534,
  472, 441, 410, 348, 317, 286, 1000, 969, 938, 907, 876, 845, 814, 783,
  752, 721, 690, 659,
  628, 597, 566, 535, 504, 473, 442, 411, 380, 349, 318, 287, 1001, 970,
  939, 877, 846, 815, 753, 722, 691, 629, 598, 567, 505, 474, 443, 381,
  350, 319, 1002, 971,
  878, 847, 754, 723, 630, 599, 506, 475, 382, 351, 1003, 879, 755, 631,
  507, 383, 908, 784, 660, 536, 412, 940, 909, 816, 785, 692, 661, 568,
  537, 444, 413, 972,
  941, 910, 848, 817, 786, 724, 693, 662, 600, 569, 538, 476, 445, 414,
  1004, 973, 942, 911, 880, 849, 818, 787, 756, 725, 694, 663, 632, 601,
  570, 539, 508, 477,
  446, 415, 1005, 974, 943, 881, 850, 819, 757, 726, 695, 633, 602, 571,
  509, 478, 447, 1006, 975, 882, 851, 758, 727, 634, 603, 510, 479,
  1007, 883, 759, 635, 511,
  912, 788, 664, 540, 944, 913, 820, 789, 696, 665, 572, 541, 976, 945,
  914, 852, 821, 790, 728, 697, 666, 604, 573, 542, 1008, 977, 946, 915,
  884, 853, 822, 791,
  760, 729, 698, 667, 636, 605, 574, 543, 1009, 978, 947, 885, 854, 823,
  761, 730, 699, 637, 606, 575, 1010, 979, 886, 855, 762, 731, 638, 607,
  1011, 887, 763, 639,
  916, 792, 668, 948, 917, 824, 793, 700, 669, 980, 949, 918, 856, 825,
  794, 732, 701, 670, 1012, 981, 950, 919, 888, 857, 826, 795, 764, 733,
  702, 671, 1013, 982,
  951, 889, 858, 827, 765, 734, 703, 1014, 983, 890, 859, 766, 735, 1015,
  891, 767, 920, 796, 952, 921, 828, 797, 984, 953, 922, 860, 829, 798,
  1016, 985, 954, 923,
  892, 861, 830, 799, 1017, 986, 955, 893, 862, 831, 1018, 987, 894, 863,
  1019, 895, 924, 956, 925, 988, 957, 926, 1020, 989, 958, 927, 1021,
  990, 959, 1022, 991, 1023,
};

#if CONFIG_EXT_TX
// Scan over two rectangular vertical partitions one after the other
DECLARE_ALIGNED(16, static const int16_t, v2_scan_32x32[1024]) = {
  0,  1, 32, 33,  2, 64, 34, 65, 66,  3, 96, 35,
  97,  67,  98,   4, 128,  36, 129,  99,  68, 130,   5, 100,
  131, 160,  37, 161,  69, 162, 132, 101, 163,   6, 192,  38,
  193,  70, 194, 133, 164, 102, 195,   7, 224,  39, 165, 225,
  134, 196,  71, 226, 103, 227, 166, 197,   8, 256,  40, 135,
  228, 257,  72, 258, 198, 104, 259, 167, 229, 136, 260,   9,
  288,  41, 289,  73, 199, 230, 290, 168, 261, 105, 291, 137,
  292, 231,  10, 200, 262, 320,  42, 321,  74, 322, 169, 293,
  106, 323, 232, 263, 138, 324, 201, 294,  11, 352,  43, 353,
  75, 170, 325, 354, 264, 107, 233, 295, 355, 202, 326, 139,
  356,  12, 384,  44, 265, 296, 385, 171, 357,  76, 386, 234,
  327, 108, 387, 203, 358, 140, 388, 297, 266, 328,  13, 172,
  389, 416,  45, 235, 359, 417,  77, 418, 109, 419, 204, 390,
  298, 329, 141, 267, 360, 420, 236, 391, 173, 421,  14, 448,
  46, 449,  78, 330, 450, 299, 361, 110, 205, 422, 451, 268,
  392, 142, 452, 237, 423, 174, 331, 362, 453,  15, 300, 393,
  480,  47, 481,  79, 482, 206, 454, 269, 424, 111, 483, 143,
  484, 363, 332, 394, 238, 455, 175, 301, 425, 485, 512, 513,
  270, 456, 514, 207, 486, 364, 395, 515, 333, 426, 516, 239,
  487, 302, 457, 517, 396, 271, 488, 544, 365, 427, 545, 518,
  546, 334, 458, 547, 519, 548, 303, 489, 397, 428, 549, 366,
  459, 520, 576, 335, 490, 550, 577, 578, 579, 521, 429, 551,
  398, 460, 580, 367, 491, 581, 552, 522, 582, 608, 609, 430,
  461, 610, 399, 492, 553, 611, 583, 523, 612, 613, 584, 554,
  462, 431, 493, 614, 524, 640, 641, 642, 585, 643, 555, 615,
  644, 463, 494, 586, 525, 616, 645, 556, 646, 672, 617, 673,
  587, 674, 647, 495, 675, 526, 676, 557, 618, 648, 677, 588,
  678, 527, 649, 619, 704, 558, 705, 706, 679, 589, 707, 650,
  708, 620, 680, 709, 559, 590, 710, 651, 681, 736, 621, 737,
  711, 738, 739, 682, 652, 740, 712, 591, 741, 622, 683, 713,
  742, 653, 768, 769, 743, 770, 714, 684, 771, 623, 772, 744,
  654, 773, 715, 685, 745, 774, 655, 775, 800, 801, 716, 746,
  802, 803, 686, 776, 804, 747, 805, 717, 777, 806, 687, 748,
  807, 778, 832, 833, 718, 834, 835, 808, 836, 779, 749, 837,
  809, 719, 838, 780, 750, 810, 839, 864, 865, 866, 867, 840,
  781, 868, 811, 751, 869, 841, 870, 812, 782, 842, 871, 896,
  897, 898, 872, 899, 813, 843, 900, 783, 901, 873, 844, 902,
  814, 874, 903, 928, 929, 845, 930, 904, 815, 875, 931, 932,
  905, 933, 846, 876, 934, 906, 935, 877, 960, 847, 961, 962,
  907, 936, 963, 964, 937, 878, 965, 908, 966, 938, 967, 909,
  879, 992, 939, 993, 968, 994, 995, 996, 910, 969, 940, 997,
  998,  970,  911,  941,  999,  971, 1000,  942, 1001,  972, 1002,  943,
  973, 1003,  974, 1004,  975, 1005, 1006, 1007,   16,   48,   80,  112,
  144, 176,  17,  49, 208,  81, 113, 145, 240, 177, 272,  18,
  50, 209,  82, 114, 304, 241, 146, 178, 273, 336, 210,  19,
  51,  83, 115, 305, 242, 147, 368, 179, 274, 337, 211,  20,
  400,  52,  84, 306, 116, 243, 369, 148, 338, 180, 275, 432,
  401, 212,  21,  53, 307,  85, 370, 244, 117, 464, 149, 433,
  339, 276, 181, 402, 213, 308, 496, 371,  22,  54, 465,  86,
  245, 118, 434, 150, 340, 277, 403, 182, 528, 497, 214, 466,
  372, 309,  23,  55, 435,  87, 246, 119, 341, 404, 151, 529,
  560, 278, 498, 183, 467, 373, 215, 310, 436,  24,  56, 247,
  561,  88, 530, 592, 342, 120, 405, 499, 152, 279, 468, 184,
  374, 311, 437, 216, 562, 593, 531, 624,  25, 248, 500,  57,
  406,  89, 343, 121, 469, 280, 153, 594, 185, 375, 563, 625,
  438, 532, 656, 312, 217, 501, 407, 249,  26, 344,  58,  90,
  470, 122, 595, 626, 281, 564, 657, 154, 376, 533, 688, 439,
  186, 313, 502, 218, 408, 627, 596, 658, 250, 345, 471,  27,
  59, 565, 689,  91, 123, 282, 534, 720, 155, 440, 377, 187,
  503, 314, 628, 659, 219, 597, 690, 409, 472, 566, 721, 346,
  251,  28,  60, 535, 752,  92, 124, 283, 441, 378, 156, 660,
  504, 629, 691, 598, 722, 188, 315, 567, 753, 220, 410, 473,
  347, 536, 784, 252,  29, 661, 692,  61,  93, 442, 630, 723,
  284, 125, 379, 505, 599, 754, 157, 316, 568, 785, 189, 474,
  411, 221, 537, 816, 693, 348, 662, 724, 253, 631, 755, 443,
  30, 600, 786,  62, 506,  94, 285, 380, 126, 569, 817, 158,
  317, 190, 475, 694, 725, 412, 663, 756, 538, 848, 222, 632,
  787, 349, 254, 601, 818, 444, 507,  31,  63, 381, 286,  95,
  570, 849, 726, 127, 695, 757, 664, 788, 159, 476, 318, 413,
  539, 880, 191, 633, 819, 223, 350, 602, 850, 508, 255, 445,
  727, 758, 696, 789, 571, 881, 382, 287, 665, 820, 477, 634,
  851, 540, 912, 319, 414, 603, 882, 759, 728, 790, 351, 509,
  697, 821, 446, 572, 913, 666, 852, 383, 635, 883, 478, 541,
  944, 415, 760, 791, 604, 914, 729, 822, 698, 853, 510, 667,
  884, 447, 573, 945, 636, 915, 792, 761, 823, 542, 976, 479,
  730, 854, 605, 946, 699, 885, 668, 916, 511, 574, 977, 793,
  824,  637,  947,  762,  855,  731,  886,  543, 1008,  606,  978,  700,
  917,  669,  948,  575,  825, 1009,  794,  856,  763,  887,  638,  979,
  732,  918,  701,  949,  607, 1010,  670,  980,  826,  857,  795,  888,
  764,  919,  639, 1011,  733,  950,  702,  981,  858,  827,  889,  796,
  920,  671, 1012,  765,  951,  734,  982,  703, 1013,  859,  890,  828,
  921,  797,  952,  766,  983,  735, 1014,  891,  860,  922,  829,  953,
  798,  984,  767, 1015,  892,  923,  861,  954,  830,  985,  799, 1016,
  924,  893,  955,  862,  986,  831, 1017,  925,  956,  894,  987,  863,
  1018,  957,  926,  988,  895, 1019,  958,  989,  927, 1020,  990,  959,
  1021,  991, 1022, 1023,
};

// Scan over two rectangular horizontal partitions one after the other
DECLARE_ALIGNED(16, static const int16_t, h2_scan_32x32[1024]) = {
  0,  1, 32, 33,  2, 64, 34, 65, 66,  3, 96, 35,
  97,  67,  98,   4, 128,  36, 129,  99,  68, 130,   5, 100,
  131, 160,  37, 161,  69, 162, 132, 101, 163,   6, 192,  38,
  193,  70, 194, 133, 164, 102, 195,   7, 224,  39, 165, 225,
  134, 196,  71, 226, 103, 227, 166, 197,   8, 256,  40, 135,
  228, 257,  72, 258, 198, 104, 259, 167, 229, 136, 260,   9,
  288,  41, 289,  73, 199, 230, 290, 168, 261, 105, 291, 137,
  292, 231,  10, 200, 262, 320,  42, 321,  74, 322, 169, 293,
  106, 323, 232, 263, 138, 324, 201, 294,  11, 352,  43, 353,
  75, 170, 325, 354, 264, 107, 233, 295, 355, 202, 326, 139,
  356,  12, 384,  44, 265, 296, 385, 171, 357,  76, 386, 234,
  327, 108, 387, 203, 358, 140, 388, 297, 266, 328,  13, 172,
  389, 416,  45, 235, 359, 417,  77, 418, 109, 419, 204, 390,
  298, 329, 141, 267, 360, 420, 236, 391, 173, 421,  14, 448,
  46, 449,  78, 330, 450, 299, 361, 110, 205, 422, 451, 268,
  392, 142, 452, 237, 423, 174, 331, 362, 453,  15, 300, 393,
  480,  47, 481,  79, 482, 206, 454, 269, 424, 111, 483, 143,
  484, 363, 332, 394, 238, 455, 175, 301, 425, 485,  16,  48,
  80, 270, 456, 207, 486, 112, 364, 395, 333, 426, 144, 239,
  487, 302, 457, 176, 396,  17, 271, 488,  49, 365, 427, 208,
  81, 334, 458, 113, 145, 240, 303, 489, 397, 428, 177, 366,
  459, 272,  18,  50, 209, 335, 490,  82, 114, 304, 241, 429,
  146, 398, 460, 367, 491, 178, 273, 336, 210,  19,  51,  83,
  430, 461, 399, 492, 115, 305, 242, 147, 368, 179, 274, 337,
  462, 431, 493, 211,  20, 400,  52,  84, 306, 116, 243, 369,
  148, 463, 494, 338, 180, 275, 432, 401, 212,  21,  53, 307,
  85, 370, 244, 117, 495, 464, 149, 433, 339, 276, 181, 402,
  213, 308, 496, 371,  22,  54, 465,  86, 245, 118, 434, 150,
  340, 277, 403, 182, 497, 214, 466, 372, 309,  23,  55, 435,
  87, 246, 119, 341, 404, 151, 278, 498, 183, 467, 373, 215,
  310, 436,  24,  56, 247,  88, 342, 120, 405, 499, 152, 279,
  468, 184, 374, 311, 437, 216,  25, 248, 500,  57, 406,  89,
  343, 121, 469, 280, 153, 185, 375, 438, 312, 217, 501, 407,
  249,  26, 344,  58,  90, 470, 122, 281, 154, 376, 439, 186,
  313, 502, 218, 408, 250, 345, 471,  27,  59,  91, 123, 282,
  155, 440, 377, 187, 503, 314, 219, 409, 472, 346, 251,  28,
  60,  92, 124, 283, 441, 378, 156, 504, 188, 315, 220, 410,
  473, 347, 252,  29,  61,  93, 442, 284, 125, 379, 505, 157,
  316, 189, 474, 411, 221, 348, 253, 443,  30,  62, 506,  94,
  285, 380, 126, 158, 317, 190, 475, 412, 222, 349, 254, 444,
  507,  31,  63, 381, 286,  95, 127, 159, 476, 318, 413, 191,
  223, 350, 508, 255, 445, 382, 287, 477, 319, 414, 351, 509,
  446, 383, 478, 415, 510, 447, 479, 511, 512, 513, 514, 515,
  516, 517, 544, 545, 518, 546, 547, 519, 548, 549, 520, 576,
  550, 577, 578, 579, 521, 551, 580, 581, 552, 522, 582, 608,
  609, 610, 553, 611, 583, 523, 612, 613, 584, 554, 614, 524,
  640, 641, 642, 585, 643, 555, 615, 644, 586, 525, 616, 645,
  556, 646, 672, 617, 673, 587, 674, 647, 675, 526, 676, 557,
  618, 648, 677, 588, 678, 527, 649, 619, 704, 558, 705, 706,
  679, 589, 707, 650, 708, 620, 680, 709, 528, 559, 590, 710,
  651, 681, 736, 621, 737, 711, 738, 739, 682, 652, 529, 560,
  740, 712, 591, 741, 622, 683, 713, 742, 653, 768, 769, 561,
  743, 530, 592, 770, 714, 684, 771, 623, 772, 744, 654, 773,
  715, 685, 745, 774, 562, 593, 531, 624, 655, 775, 800, 801,
  716, 746, 802, 803, 686, 776, 804, 594, 563, 625, 747, 805,
  717, 532, 656, 777, 806, 687, 748, 807, 778, 832, 833, 718,
  834, 595, 626, 835, 564, 657, 808, 836, 533, 688, 779, 749,
  837, 809, 719, 838, 780, 627, 596, 658, 750, 810, 839, 864,
  565, 689, 865, 866, 867, 534, 720, 840, 781, 868, 811, 751,
  869, 841, 628, 659, 597, 690, 870, 812, 782, 566, 721, 842,
  871, 896, 535, 752, 897, 898, 872, 899, 813, 843, 660, 900,
  783, 629, 691, 598, 722, 901, 873, 567, 753, 844, 902, 814,
  874, 536, 784, 903, 661, 692, 928, 929, 630, 723, 845, 930,
  904, 815, 875, 931, 599, 754, 932, 568, 785, 905, 933, 846,
  876, 934, 537, 816, 693, 662, 724, 906, 631, 755, 935, 877,
  600, 786, 960, 847, 961, 962, 907, 936, 963, 569, 817, 964,
  937, 694, 725, 878, 965, 908, 663, 756, 538, 848, 966, 632,
  787, 938, 601, 818, 967, 909, 879, 992, 939, 993, 968, 570,
  849, 994, 726, 695, 757, 995, 664, 788, 996, 910, 969, 539,
  880, 940, 633, 819, 997, 998, 602, 850, 970, 911, 941, 999,
  727,  758,  696,  789,  571,  881,  971,  665,  820, 1000,  634,  851,
  942,  540,  912, 1001,  972,  603,  882,  759,  728,  790, 1002,  697,
  821,  943,  973,  572,  913,  666,  852, 1003,  635,  883,  974,  541,
  944,  760,  791, 1004,  604,  914,  729,  822,  698,  853,  975,  667,
  884,  573,  945, 1005,  636,  915,  792,  761,  823,  542,  976, 1006,
  730,  854,  605,  946,  699,  885,  668,  916, 1007,  574,  977,  793,
  824,  637,  947,  762,  855,  731,  886,  543, 1008,  606,  978,  700,
  917,  669,  948,  575,  825, 1009,  794,  856,  763,  887,  638,  979,
  732,  918,  701,  949,  607, 1010,  670,  980,  826,  857,  795,  888,
  764,  919,  639, 1011,  733,  950,  702,  981,  858,  827,  889,  796,
  920,  671, 1012,  765,  951,  734,  982,  703, 1013,  859,  890,  828,
  921,  797,  952,  766,  983,  735, 1014,  891,  860,  922,  829,  953,
  798,  984,  767, 1015,  892,  923,  861,  954,  830,  985,  799, 1016,
  924,  893,  955,  862,  986,  831, 1017,  925,  956,  894,  987,  863,
  1018,  957,  926,  988,  895, 1019,  958,  989,  927, 1020,  990,  959,
  1021,  991, 1022, 1023,
};

// Scan where the top left quarter is scanned first
DECLARE_ALIGNED(16, static const int16_t, qtr_scan_32x32[1024]) = {
  0,  1, 32, 33,  2, 64, 34, 65, 66,  3, 96, 35,
  97,  67,  98,   4, 128,  36, 129,  99,  68, 130,   5, 100,
  131, 160,  37, 161,  69, 162, 132, 101, 163,   6, 192,  38,
  193,  70, 194, 133, 164, 102, 195,   7, 224,  39, 165, 225,
  134, 196,  71, 226, 103, 227, 166, 197,   8, 256,  40, 135,
  228, 257,  72, 258, 198, 104, 259, 167, 229, 136, 260,   9,
  288,  41, 289,  73, 199, 230, 290, 168, 261, 105, 291, 137,
  292, 231,  10, 200, 262, 320,  42, 321,  74, 322, 169, 293,
  106, 323, 232, 263, 138, 324, 201, 294,  11, 352,  43, 353,
  75, 170, 325, 354, 264, 107, 233, 295, 355, 202, 326, 139,
  356,  12, 384,  44, 265, 296, 385, 171, 357,  76, 386, 234,
  327, 108, 387, 203, 358, 140, 388, 297, 266, 328,  13, 172,
  389, 416,  45, 235, 359, 417,  77, 418, 109, 419, 204, 390,
  298, 329, 141, 267, 360, 420, 236, 391, 173, 421,  14, 448,
  46, 449,  78, 330, 450, 299, 361, 110, 205, 422, 451, 268,
  392, 142, 452, 237, 423, 174, 331, 362, 453,  15, 300, 393,
  480,  47, 481,  79, 482, 206, 454, 269, 424, 111, 483, 143,
  484, 363, 332, 394, 238, 455, 175, 301, 425, 485, 270, 456,
  207, 486, 364, 395, 333, 426, 239, 487, 302, 457, 396, 271,
  488, 365, 427, 334, 458, 303, 489, 397, 428, 366, 459, 335,
  490, 429, 398, 460, 367, 491, 430, 461, 399, 492, 462, 431,
  493, 463, 494, 495,  16, 512,  48, 513,  80, 514, 112, 515,
  144, 516, 176, 517,  17, 544,  49, 545, 208, 518,  81, 546,
  113, 547, 145, 240, 519, 548, 177, 549, 272, 520,  18, 576,
  50, 209, 550, 577,  82, 578, 114, 579, 304, 521, 241, 551,
  146, 580, 178, 581, 273, 552, 336, 522, 210, 582,  19, 608,
  51, 609,  83, 610, 115, 305, 553, 611, 242, 583, 147, 368,
  523, 612, 179, 613, 274, 584, 337, 554, 211, 614,  20, 400,
  524, 640,  52, 641,  84, 642, 306, 585, 116, 643, 243, 369,
  555, 615, 148, 644, 338, 586, 180, 275, 432, 525, 616, 645,
  401, 556, 212, 646,  21, 672,  53, 307, 617, 673,  85, 370,
  587, 674, 244, 647, 117, 675, 464, 526, 149, 676, 433, 557,
  339, 618, 276, 648, 181, 677, 402, 588, 213, 678, 308, 496,
  527, 649, 371, 619,  22, 704,  54, 465, 558, 705,  86, 706,
  245, 679, 118, 434, 589, 707, 150, 340, 650, 708, 277, 403,
  620, 680, 182, 709, 528, 497, 559, 214, 466, 590, 710, 372,
  651, 309, 681,  23, 736,  55, 435, 621, 737,  87, 246, 711,
  738, 119, 739, 341, 682, 404, 652, 151, 529, 560, 740, 278,
  712, 498, 591, 183, 741, 467, 622, 373, 683, 215, 310, 713,
  742, 436, 653,  24, 768,  56, 769, 247, 561, 743,  88, 530,
  592, 770, 342, 714, 120, 405, 684, 771, 499, 623, 152, 772,
  279, 744, 468, 654, 184, 773, 374, 715, 311, 437, 685, 745,
  216, 774, 562, 593, 531, 624,  25, 248, 500, 655, 775, 800,
  57, 801, 406, 716,  89, 343, 746, 802, 121, 803, 469, 686,
  280, 776, 153, 804, 594, 185, 375, 563, 625, 747, 805, 438,
  717, 532, 656, 312, 777, 217, 806, 501, 687, 407, 748, 249,
  807,  26, 344, 778, 832,  58, 833,  90, 470, 718, 834, 122,
  595, 626, 835, 281, 564, 657, 808, 154, 836, 376, 533, 688,
  779, 439, 749, 186, 837, 313, 809, 502, 719, 218, 838, 408,
  780, 627, 596, 658, 250, 345, 471, 750, 810, 839,  27, 864,
  59, 565, 689, 865,  91, 866, 123, 867, 282, 534, 720, 840,
  155, 440, 781, 868, 377, 811, 187, 503, 751, 869, 314, 841,
  628, 659, 219, 597, 690, 870, 409, 812, 472, 782, 566, 721,
  346, 842, 251, 871,  28, 896,  60, 535, 752, 897,  92, 898,
  124, 283, 872, 899, 441, 813, 378, 843, 156, 660, 900, 504,
  783, 629, 691, 598, 722, 188, 901, 315, 873, 567, 753, 220,
  410, 844, 902, 473, 814, 347, 874, 536, 784, 252, 903,  29,
  661, 692, 928,  61, 929,  93, 442, 630, 723, 845, 930, 284,
  904, 125, 379, 505, 815, 875, 931, 599, 754, 157, 932, 316,
  568, 785, 905, 189, 933, 474, 846, 411, 876, 221, 934, 537,
  816, 693, 348, 662, 724, 906, 253, 631, 755, 935, 443, 877,
  30, 600, 786, 960,  62, 506, 847, 961,  94, 962, 285, 380,
  907, 936, 126, 963, 569, 817, 158, 964, 317, 937, 190, 475,
  694, 725, 878, 965, 412, 908, 663, 756, 538, 848, 222, 966,
  632, 787, 349, 938, 254, 601, 818, 967, 444, 909, 507, 879,
  31, 992,  63, 381, 939, 993, 286, 968,  95, 570, 849, 994,
  726, 127, 695, 757, 995, 664, 788, 159, 996, 476, 910, 318,
  969, 413, 539, 880, 940, 191, 633, 819, 997, 223, 998, 350,
  602, 850, 970, 508, 911, 255, 445, 941, 999, 727, 758, 696,
  789,  571,  881,  382,  971,  287,  665,  820, 1000,  477,  634,  851,
  942,  540,  912,  319, 1001,  414,  972,  603,  882,  759,  728,  790,
  351, 1002,  509,  697,  821,  943,  446,  973,  572,  913,  666,  852,
  383, 1003,  635,  883,  478,  974,  541,  944,  415,  760,  791, 1004,
  604, 914, 729, 822, 698, 853, 510, 975, 667, 884, 447, 573,
  945, 1005,  636,  915,  792,  761,  823,  542,  976,  479, 1006,  730,
  854,  605,  946,  699,  885,  668,  916,  511, 1007,  574,  977,  793,
  824,  637,  947,  762,  855,  731,  886,  543, 1008,  606,  978,  700,
  917,  669,  948,  575,  825, 1009,  794,  856,  763,  887,  638,  979,
  732,  918,  701,  949,  607, 1010,  670,  980,  826,  857,  795,  888,
  764,  919,  639, 1011,  733,  950,  702,  981,  858,  827,  889,  796,
  920,  671, 1012,  765,  951,  734,  982,  703, 1013,  859,  890,  828,
  921,  797,  952,  766,  983,  735, 1014,  891,  860,  922,  829,  953,
  798,  984,  767, 1015,  892,  923,  861,  954,  830,  985,  799, 1016,
  924,  893,  955,  862,  986,  831, 1017,  925,  956,  894,  987,  863,
  1018,  957,  926,  988,  895, 1019,  958,  989,  927, 1020,  990,  959,
  1021,  991, 1022, 1023,
};
#endif  // CONFIG_EXT_TX

// Neighborhood 2-tuples for various scans and blocksizes,
// in {top, left} order for each position in corresponding scan order.
DECLARE_ALIGNED(16, static const int16_t,
                default_scan_4x4_neighbors[17 * MAX_NEIGHBORS]) = {
  0,   0,   0,   0,   4,   0,   1,   4,   4,   5,   5,   1,
  8,   8,   5,   8,   2,   2,   2,   5,   9,  12,   6,   9,
  3,   6,  10,  13,   7,  10,  11,  14,   0,   0,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t,
                mcol_scan_4x4_neighbors[17 * MAX_NEIGHBORS]) = {
  0, 0, 0, 0, 4, 4, 8, 8, 0, 0, 1, 4, 5, 8, 9, 12, 1, 1, 2, 5, 6, 9, 10, 13,
  2, 2, 3, 6, 7, 10, 11, 14, 0, 0,
};

DECLARE_ALIGNED(16, static const int16_t,
                mrow_scan_4x4_neighbors[17 * MAX_NEIGHBORS]) = {
  0, 0, 0, 0, 1, 1, 2, 2, 0, 0, 1, 4, 2, 5, 3, 6, 4, 4, 5, 8, 6, 9, 7, 10, 8,
  8, 9, 12, 10, 13, 11, 14, 0, 0,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t,
                col_scan_4x4_neighbors[17 * MAX_NEIGHBORS]) = {
  0,   0,   0,   0,   4,   4,   4,   0,   8,   8,   1,   4,
  5,   8,   5,   1,   9,  12,   2,   5,   6,   9,   6,   2,
  3,   6,  10,  13,   7,  10,  11,  14,   0,   0,
};

DECLARE_ALIGNED(16, static const int16_t,
                row_scan_4x4_neighbors[17 * MAX_NEIGHBORS]) = {
  0,   0,   0,   0,   0,   1,   1,   1,   1,   4,   2,   2,
  2,   5,   4,   5,   5,   8,   3,   6,   8,   9,   6,   9,
  9,  12,   7,  10,  10,  13,  11,  14,   0,   0,
};

DECLARE_ALIGNED(16, static const int16_t,
                col_scan_8x8_neighbors[65 * MAX_NEIGHBORS]) = {
  0,   0,   0,   0,   8,   8,   8,   0,  16,  16,   1,   8,
  24,  24,   9,  16,   9,   1,  32,  32,  17,  24,   2,   9,
  25,  32,  10,  17,  40,  40,  10,   2,  18,  25,  33,  40,
  3,  10,  48,  48,  11,  18,  26,  33,  11,   3,  41,  48,
  19,  26,  34,  41,   4,  11,  27,  34,  12,  19,  49,  56,
  42,  49,  20,  27,  12,   4,  35,  42,   5,  12,  28,  35,
  50,  57,  43,  50,  13,  20,  36,  43,  13,   5,  21,  28,
  51,  58,  29,  36,   6,  13,  44,  51,  14,  21,  14,   6,
  37,  44,  52,  59,  22,  29,   7,  14,  30,  37,  45,  52,
  15,  22,  38,  45,  23,  30,  53,  60,  31,  38,  46,  53,
  39,  46,  54,  61,  47,  54,  55,  62,   0,   0,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t,
                mcol_scan_8x8_neighbors[65 * MAX_NEIGHBORS]) = {
  0, 0, 0, 0, 8, 8, 16, 16, 24, 24, 32, 32, 40, 40, 48, 48, 0, 0, 1, 8, 9,
  16, 17, 24, 25, 32, 33, 40, 41, 48, 49, 56, 1, 1, 2, 9, 10, 17, 18, 25,
  26, 33, 34, 41, 42, 49, 50, 57, 2, 2, 3, 10, 11, 18, 19, 26, 27, 34, 35,
  42, 43, 50, 51, 58, 3, 3, 4, 11, 12, 19, 20, 27, 28, 35, 36, 43, 44, 51,
  52, 59, 4, 4, 5, 12, 13, 20, 21, 28, 29, 36, 37, 44, 45, 52, 53, 60, 5,
  5, 6, 13, 14, 21, 22, 29, 30, 37, 38, 45, 46, 53, 54, 61, 6, 6, 7, 14,
  15, 22, 23, 30, 31, 38, 39, 46, 47, 54, 55, 62, 0, 0,
};

DECLARE_ALIGNED(16, static const int16_t,
                mrow_scan_8x8_neighbors[65 * MAX_NEIGHBORS]) = {
  0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 0, 0, 1, 8, 2, 9, 3, 10,
  4, 11, 5, 12, 6, 13, 7, 14, 8, 8, 9, 16, 10, 17, 11, 18, 12, 19, 13, 20,
  14, 21, 15, 22, 16, 16, 17, 24, 18, 25, 19, 26, 20, 27, 21, 28, 22, 29,
  23, 30, 24, 24, 25, 32, 26, 33, 27, 34, 28, 35, 29, 36, 30, 37, 31, 38,
  32, 32, 33, 40, 34, 41, 35, 42, 36, 43, 37, 44, 38, 45, 39, 46, 40, 40,
  41, 48, 42, 49, 43, 50, 44, 51, 45, 52, 46, 53, 47, 54, 48, 48, 49, 56,
  50, 57, 51, 58, 52, 59, 53, 60, 54, 61, 55, 62, 0, 0,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t,
                row_scan_8x8_neighbors[65 * MAX_NEIGHBORS]) = {
  0,   0,   0,   0,   1,   1,   0,   1,   1,   8,   2,   2,
  8,   9,   2,   9,   3,   3,   9,  16,   3,  10,  16,  17,
  4,   4,  10,  17,  17,  24,   4,  11,  11,  18,  18,  25,
  24,  25,   5,   5,   5,  12,  12,  19,  25,  32,  19,  26,
  6,   6,  26,  33,  32,  33,  13,  20,  20,  27,  33,  40,
  6,  13,  27,  34,  40,  41,  34,  41,  21,  28,  28,  35,
  41,  48,  14,  21,  35,  42,   7,  14,  48,  49,  29,  36,
  42,  49,  36,  43,  22,  29,  49,  56,  15,  22,  43,  50,
  50,  57,  37,  44,  30,  37,  44,  51,  23,  30,  51,  58,
  45,  52,  38,  45,  52,  59,  31,  38,  53,  60,  39,  46,
  46,  53,  47,  54,  54,  61,  55,  62,   0,   0,
};

DECLARE_ALIGNED(16, static const int16_t,
                default_scan_8x8_neighbors[65 * MAX_NEIGHBORS]) = {
  0,   0,   0,   0,   8,   0,   8,   8,   1,   8,   9,   1,
  9,  16,  16,  17,   2,   9,  10,   2,  10,  17,  17,  24,
  24,  25,   3,  10,  11,   3,  18,  25,  25,  32,  11,  18,
  32,  33,   4,  11,  26,  33,  19,  26,  12,   4,  33,  40,
  12,  19,  40,  41,   5,  12,  27,  34,  34,  41,  20,  27,
  13,  20,  13,   5,  41,  48,  48,  49,  28,  35,  35,  42,
  21,  28,   6,   6,   6,  13,  42,  49,  49,  56,  36,  43,
  14,  21,  29,  36,   7,  14,  43,  50,  50,  57,  22,  29,
  37,  44,  15,  22,  44,  51,  51,  58,  30,  37,  23,  30,
  52,  59,  45,  52,  38,  45,  31,  38,  53,  60,  46,  53,
  39,  46,  54,  61,  47,  54,  55,  62,   0,   0,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t,
                mcol_scan_16x16_neighbors[257 * MAX_NEIGHBORS]) = {
  0, 0, 0, 0, 16, 16, 32, 32, 48, 48, 64, 64, 80, 80, 96, 96,
  112, 112, 128, 128, 144, 144, 160, 160, 176, 176, 192, 192, 208,
  208, 224, 224,
  0, 0, 1, 16, 17, 32, 33, 48, 49, 64, 65, 80, 81, 96, 97, 112,
  113, 128, 129, 144, 145, 160, 161, 176, 177, 192, 193, 208, 209,
  224, 225, 240,
  1, 1, 2, 17, 18, 33, 34, 49, 50, 65, 66, 81, 82, 97, 98, 113,
  114, 129, 130, 145, 146, 161, 162, 177, 178, 193, 194, 209, 210,
  225, 226, 241,
  2, 2, 3, 18, 19, 34, 35, 50, 51, 66, 67, 82, 83, 98, 99, 114,
  115, 130, 131, 146, 147, 162, 163, 178, 179, 194, 195, 210, 211,
  226, 227, 242,
  3, 3, 4, 19, 20, 35, 36, 51, 52, 67, 68, 83, 84, 99, 100, 115,
  116, 131, 132, 147, 148, 163, 164, 179, 180, 195, 196, 211, 212,
  227, 228, 243,
  4, 4, 5, 20, 21, 36, 37, 52, 53, 68, 69, 84, 85, 100, 101, 116,
  117, 132, 133, 148, 149, 164, 165, 180, 181, 196, 197, 212, 213,
  228, 229, 244,
  5, 5, 6, 21, 22, 37, 38, 53, 54, 69, 70, 85, 86, 101, 102, 117,
  118, 133, 134, 149, 150, 165, 166, 181, 182, 197, 198, 213, 214,
  229, 230, 245,
  6, 6, 7, 22, 23, 38, 39, 54, 55, 70, 71, 86, 87, 102, 103, 118,
  119, 134, 135, 150, 151, 166, 167, 182, 183, 198, 199, 214, 215,
  230, 231, 246,
  7, 7, 8, 23, 24, 39, 40, 55, 56, 71, 72, 87, 88, 103, 104, 119,
  120, 135, 136, 151, 152, 167, 168, 183, 184, 199, 200, 215, 216,
  231, 232, 247,
  8, 8, 9, 24, 25, 40, 41, 56, 57, 72, 73, 88, 89, 104, 105, 120,
  121, 136, 137, 152, 153, 168, 169, 184, 185, 200, 201, 216, 217,
  232, 233, 248,
  9, 9, 10, 25, 26, 41, 42, 57, 58, 73, 74, 89, 90, 105, 106, 121,
  122, 137, 138, 153, 154, 169, 170, 185, 186, 201, 202, 217, 218,
  233, 234, 249,
  10, 10, 11, 26, 27, 42, 43, 58, 59, 74, 75, 90, 91, 106, 107, 122,
  123, 138, 139, 154, 155, 170, 171, 186, 187, 202, 203, 218, 219,
  234, 235, 250,
  11, 11, 12, 27, 28, 43, 44, 59, 60, 75, 76, 91, 92, 107, 108, 123,
  124, 139, 140, 155, 156, 171, 172, 187, 188, 203, 204, 219, 220,
  235, 236, 251,
  12, 12, 13, 28, 29, 44, 45, 60, 61, 76, 77, 92, 93, 108, 109, 124,
  125, 140, 141, 156, 157, 172, 173, 188, 189, 204, 205, 220, 221,
  236, 237, 252,
  13, 13, 14, 29, 30, 45, 46, 61, 62, 77, 78, 93, 94, 109, 110, 125,
  126, 141, 142, 157, 158, 173, 174, 189, 190, 205, 206, 221, 222,
  237, 238, 253,
  14, 14, 15, 30, 31, 46, 47, 62, 63, 78, 79, 94, 95, 110, 111, 126,
  127, 142, 143, 158, 159, 174, 175, 190, 191, 206, 207, 222, 223,
  238, 239, 254,
  0, 0,
};

DECLARE_ALIGNED(16, static const int16_t,
                mrow_scan_16x16_neighbors[257 * MAX_NEIGHBORS]) = {
  0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
  7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14,
  0, 0, 1, 16, 2, 17, 3, 18, 4, 19, 5, 20, 6, 21, 7, 22,
  8, 23, 9, 24, 10, 25, 11, 26, 12, 27, 13, 28, 14, 29, 15, 30,
  16, 16, 17, 32, 18, 33, 19, 34, 20, 35, 21, 36, 22, 37, 23, 38,
  24, 39, 25, 40, 26, 41, 27, 42, 28, 43, 29, 44, 30, 45, 31, 46,
  32, 32, 33, 48, 34, 49, 35, 50, 36, 51, 37, 52, 38, 53, 39, 54,
  40, 55, 41, 56, 42, 57, 43, 58, 44, 59, 45, 60, 46, 61, 47, 62,
  48, 48, 49, 64, 50, 65, 51, 66, 52, 67, 53, 68, 54, 69, 55, 70,
  56, 71, 57, 72, 58, 73, 59, 74, 60, 75, 61, 76, 62, 77, 63, 78,
  64, 64, 65, 80, 66, 81, 67, 82, 68, 83, 69, 84, 70, 85, 71, 86,
  72, 87, 73, 88, 74, 89, 75, 90, 76, 91, 77, 92, 78, 93, 79, 94,
  80, 80, 81, 96, 82, 97, 83, 98, 84, 99, 85, 100, 86, 101, 87, 102,
  88, 103, 89, 104, 90, 105, 91, 106, 92, 107, 93, 108, 94, 109, 95, 110,
  96, 96, 97, 112, 98, 113, 99, 114, 100, 115, 101, 116, 102, 117,
  103, 118,
  104, 119, 105, 120, 106, 121, 107, 122, 108, 123, 109, 124, 110,
  125, 111, 126,
  112, 112, 113, 128, 114, 129, 115, 130, 116, 131, 117, 132, 118,
  133, 119, 134,
  120, 135, 121, 136, 122, 137, 123, 138, 124, 139, 125, 140, 126,
  141, 127, 142,
  128, 128, 129, 144, 130, 145, 131, 146, 132, 147, 133, 148, 134,
  149, 135, 150,
  136, 151, 137, 152, 138, 153, 139, 154, 140, 155, 141, 156, 142,
  157, 143, 158,
  144, 144, 145, 160, 146, 161, 147, 162, 148, 163, 149, 164, 150,
  165, 151, 166,
  152, 167, 153, 168, 154, 169, 155, 170, 156, 171, 157, 172, 158,
  173, 159, 174,
  160, 160, 161, 176, 162, 177, 163, 178, 164, 179, 165, 180, 166,
  181, 167, 182,
  168, 183, 169, 184, 170, 185, 171, 186, 172, 187, 173, 188, 174,
  189, 175, 190,
  176, 176, 177, 192, 178, 193, 179, 194, 180, 195, 181, 196, 182,
  197, 183, 198,
  184, 199, 185, 200, 186, 201, 187, 202, 188, 203, 189, 204, 190,
  205, 191, 206,
  192, 192, 193, 208, 194, 209, 195, 210, 196, 211, 197, 212, 198,
  213, 199, 214,
  200, 215, 201, 216, 202, 217, 203, 218, 204, 219, 205, 220, 206,
  221, 207, 222,
  208, 208, 209, 224, 210, 225, 211, 226, 212, 227, 213, 228, 214,
  229, 215, 230,
  216, 231, 217, 232, 218, 233, 219, 234, 220, 235, 221, 236, 222,
  237, 223, 238,
  224, 224, 225, 240, 226, 241, 227, 242, 228, 243, 229, 244, 230,
  245, 231, 246,
  232, 247, 233, 248, 234, 249, 235, 250, 236, 251, 237, 252, 238,
  253, 239, 254,
  0, 0,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t,
                col_scan_16x16_neighbors[257 * MAX_NEIGHBORS]) = {
  0,   0,   0,   0,  16,  16,  32,  32,  16,   0,  48,  48,
  1,  16,  64,  64,  17,  32,  80,  80,  33,  48,  17,   1,
  49,  64,  96,  96,   2,  17,  65,  80,  18,  33, 112, 112,
  34,  49,  81,  96,  18,   2,  50,  65, 128, 128,   3,  18,
  97, 112,  19,  34,  66,  81, 144, 144,  82,  97,  35,  50,
  113, 128,  19,   3,  51,  66, 160, 160,   4,  19,  98, 113,
  129, 144,  67,  82,  20,  35,  83,  98, 114, 129,  36,  51,
  176, 176,  20,   4, 145, 160,  52,  67,  99, 114,   5,  20,
  130, 145,  68,  83, 192, 192, 161, 176,  21,  36, 115, 130,
  84,  99,  37,  52, 146, 161, 208, 208,  53,  68,  21,   5,
  100, 115, 177, 192, 131, 146,  69,  84,   6,  21, 224, 224,
  116, 131,  22,  37, 162, 177,  85, 100, 147, 162,  38,  53,
  193, 208, 101, 116,  54,  69,  22,   6, 132, 147, 178, 193,
  70,  85, 163, 178, 209, 224,   7,  22, 117, 132,  23,  38,
  148, 163,  23,   7,  86, 101, 194, 209, 225, 240,  39,  54,
  179, 194, 102, 117, 133, 148,  55,  70, 164, 179,   8,  23,
  71,  86, 210, 225, 118, 133, 149, 164, 195, 210,  24,  39,
  87, 102,  40,  55,  56,  71, 134, 149, 180, 195, 226, 241,
  103, 118,  24,   8, 165, 180, 211, 226,  72,  87, 150, 165,
  9,  24, 119, 134,  25,  40,  88, 103, 196, 211,  41,  56,
  135, 150, 181, 196, 104, 119,  57,  72, 227, 242, 166, 181,
  120, 135, 151, 166, 197, 212,  73,  88,  25,   9, 212, 227,
  89, 104, 136, 151, 182, 197,  10,  25,  26,  41, 105, 120,
  167, 182, 228, 243, 152, 167,  42,  57, 121, 136, 213, 228,
  58,  73, 198, 213,  74,  89, 137, 152, 183, 198, 168, 183,
  26,  10,  90, 105, 229, 244,  11,  26, 106, 121, 214, 229,
  153, 168,  27,  42, 199, 214,  43,  58, 184, 199, 122, 137,
  169, 184, 230, 245,  59,  74,  27,  11,  75,  90, 138, 153,
  200, 215, 215, 230,  91, 106,  12,  27,  28,  43, 185, 200,
  107, 122, 154, 169,  44,  59, 231, 246, 216, 231,  60,  75,
  123, 138,  28,  12,  76,  91, 201, 216, 170, 185, 232, 247,
  139, 154,  92, 107,  13,  28, 108, 123,  29,  44, 186, 201,
  217, 232, 155, 170,  45,  60,  29,  13,  61,  76, 124, 139,
  14,  14, 233, 248,  77,  92,  14,  29, 171, 186, 140, 155,
  202, 217,  30,  45,  93, 108, 109, 124,  46,  61, 156, 171,
  62,  77, 187, 202,  15,  30, 125, 140, 218, 233,  78,  93,
  31,  46, 172, 187,  47,  62, 141, 156,  94, 109, 234, 249,
  203, 218,  63,  78, 110, 125, 188, 203, 157, 172, 126, 141,
  79,  94, 173, 188,  95, 110, 219, 234, 142, 157, 204, 219,
  235, 250, 111, 126, 158, 173, 127, 142, 189, 204, 220, 235,
  143, 158, 174, 189, 205, 220, 236, 251, 159, 174, 190, 205,
  221, 236, 175, 190, 237, 252, 206, 221, 222, 237, 191, 206,
  238, 253, 207, 222, 223, 238, 239, 254,   0,   0,
};

DECLARE_ALIGNED(16, static const int16_t,
                row_scan_16x16_neighbors[257 * MAX_NEIGHBORS]) = {
  0,   0,   0,   0,   1,   1,   0,   1,   2,   2,   1,  16,
  3,   3,   2,  17,  16,  17,   4,   4,  17,  32,   3,  18,
  5,   5,  18,  33,  32,  33,   4,  19,  33,  48,   6,   6,
  19,  34,   5,  20,  34,  49,  48,  49,   7,   7,  20,  35,
  49,  64,   6,  21,  35,  50,  21,  36,  64,  65,   8,   8,
  50,  65,  36,  51,   7,  22,  22,  37,  65,  80,  51,  66,
  9,   9,  37,  52,   8,  23,  66,  81,  52,  67,  80,  81,
  23,  38,  10,  10,  38,  53,  67,  82,  81,  96,  53,  68,
  9,  24,  82,  97,  68,  83,  24,  39,  96,  97,  39,  54,
  11,  11,  54,  69,  83,  98,  97, 112,  69,  84,  10,  25,
  25,  40,  40,  55,  98, 113,  84,  99,  12,  12,  55,  70,
  112, 113,  70,  85,  11,  26,  99, 114,  85, 100, 113, 128,
  26,  41,  41,  56,  56,  71, 100, 115,  13,  13,  71,  86,
  114, 129,  86, 101, 128, 129,  57,  72, 115, 130, 101, 116,
  12,  27,  42,  57,  14,  14,  72,  87,  27,  42, 129, 144,
  87, 102, 116, 131, 130, 145, 102, 117,  58,  73, 144, 145,
  73,  88, 117, 132,  88, 103,  13,  28,  43,  58, 131, 146,
  103, 118,  28,  43, 145, 160, 132, 147,  74,  89,  89, 104,
  118, 133, 146, 161, 104, 119, 160, 161,  59,  74, 119, 134,
  133, 148,  14,  29,  44,  59, 147, 162, 161, 176,  29,  44,
  105, 120,  75,  90,  90, 105, 148, 163, 162, 177, 134, 149,
  176, 177, 120, 135, 149, 164, 163, 178,  15,  30, 135, 150,
  177, 192,  60,  75, 106, 121,  45,  60, 121, 136, 178, 193,
  91, 106, 136, 151, 164, 179, 192, 193,  30,  45, 150, 165,
  151, 166, 179, 194,  76,  91, 165, 180, 122, 137, 193, 208,
  107, 122, 137, 152, 208, 209, 180, 195,  61,  76, 152, 167,
  194, 209, 166, 181, 224, 224,  92, 107, 181, 196,  46,  61,
  138, 153, 209, 224, 167, 182, 153, 168, 195, 210,  31,  46,
  123, 138,  77,  92, 168, 183, 210, 225, 196, 211, 225, 240,
  182, 197, 154, 169, 108, 123, 139, 154, 183, 198,  62,  77,
  197, 212, 169, 184,  93, 108, 211, 226, 184, 199,  47,  62,
  212, 227, 226, 241, 124, 139, 198, 213, 155, 170, 170, 185,
  140, 155, 213, 228, 227, 242, 109, 124,  78,  93, 185, 200,
  228, 243, 199, 214, 200, 215, 214, 229, 125, 140, 171, 186,
  186, 201,  63,  78, 156, 171,  94, 109, 141, 156, 229, 244,
  201, 216, 215, 230,  79,  94, 230, 245, 216, 231, 110, 125,
  187, 202, 231, 246, 217, 232, 157, 172, 202, 217, 126, 141,
  95, 110, 142, 157, 172, 187, 232, 247, 111, 126, 218, 233,
  203, 218, 233, 248, 173, 188, 188, 203, 127, 142, 158, 173,
  143, 158, 234, 249, 219, 234, 189, 204, 204, 219, 159, 174,
  174, 189, 235, 250, 205, 220, 175, 190, 190, 205, 220, 235,
  191, 206, 221, 236, 236, 251, 206, 221, 237, 252, 207, 222,
  222, 237, 223, 238, 238, 253, 239, 254,   0,   0,
};

DECLARE_ALIGNED(16, static const int16_t,
                default_scan_16x16_neighbors[257 * MAX_NEIGHBORS]) = {
  0,   0,   0,   0,  16,   0,  16,  16,   1,  16,  17,   1,
  32,  32,  17,  32,   2,  17,  18,   2,  48,  48,  18,  33,
  33,  48,   3,  18,  49,  64,  64,  65,  34,  49,  19,   3,
  19,  34,  50,  65,   4,  19,  65,  80,  80,  81,  35,  50,
  20,   4,  20,  35,  66,  81,  81,  96,  51,  66,  96,  97,
  5,  20,  36,  51,  82,  97,  21,  36,  67,  82,  97, 112,
  21,   5,  52,  67, 112, 113,  37,  52,   6,  21,  83,  98,
  98, 113,  68,  83,  22,   6, 113, 128,  22,  37,  53,  68,
  84,  99,  99, 114, 128, 129, 114, 129,  69,  84,  38,  53,
  7,  22,  23,   7, 129, 144,  23,  38,  54,  69, 100, 115,
  85, 100, 115, 130, 144, 145, 130, 145,  39,  54,  70,  85,
  8,  23,  55,  70, 116, 131, 101, 116, 145, 160,  24,  39,
  24,   8,  86, 101, 131, 146, 160, 161, 146, 161,  71,  86,
  40,  55,   9,  24, 117, 132, 102, 117, 161, 176, 132, 147,
  56,  71,  87, 102,  25,  40, 147, 162,  25,   9, 176, 177,
  162, 177,  72,  87,  41,  56, 118, 133, 133, 148, 103, 118,
  10,  25, 148, 163,  57,  72,  88, 103, 177, 192,  26,  41,
  163, 178, 192, 193,  26,  10, 119, 134,  73,  88, 149, 164,
  104, 119, 134, 149,  42,  57, 178, 193, 164, 179,  11,  26,
  58,  73, 193, 208,  89, 104, 135, 150, 120, 135,  27,  42,
  74,  89, 208, 209, 150, 165, 179, 194, 165, 180, 105, 120,
  194, 209,  43,  58,  27,  11, 136, 151,  90, 105, 151, 166,
  180, 195,  59,  74, 121, 136, 209, 224, 195, 210, 224, 225,
  166, 181, 106, 121,  75,  90,  12,  27, 181, 196,  28,  12,
  210, 225, 152, 167, 167, 182, 137, 152,  28,  43, 196, 211,
  122, 137,  91, 106, 225, 240,  44,  59,  13,  28, 107, 122,
  182, 197, 168, 183, 211, 226, 153, 168, 226, 241,  60,  75,
  197, 212, 138, 153,  29,  44,  76,  91,  29,  13, 183, 198,
  123, 138,  45,  60, 212, 227, 198, 213, 154, 169, 169, 184,
  227, 242,  92, 107,  61,  76, 139, 154,  14,  29,  30,  14,
  184, 199, 213, 228, 108, 123, 199, 214, 228, 243,  77,  92,
  30,  45, 170, 185, 155, 170, 185, 200,  93, 108, 124, 139,
  214, 229,  46,  61, 200, 215, 229, 244,  15,  30, 109, 124,
  62,  77, 140, 155, 215, 230,  31,  46, 171, 186, 186, 201,
  201, 216,  78,  93, 230, 245, 125, 140,  47,  62, 216, 231,
  156, 171,  94, 109, 231, 246, 141, 156,  63,  78, 202, 217,
  187, 202, 110, 125, 217, 232, 172, 187, 232, 247,  79,  94,
  157, 172, 126, 141, 203, 218,  95, 110, 233, 248, 218, 233,
  142, 157, 111, 126, 173, 188, 188, 203, 234, 249, 219, 234,
  127, 142, 158, 173, 204, 219, 189, 204, 143, 158, 235, 250,
  174, 189, 205, 220, 159, 174, 220, 235, 221, 236, 175, 190,
  190, 205, 236, 251, 206, 221, 237, 252, 191, 206, 222, 237,
  207, 222, 238, 253, 223, 238, 239, 254,   0,   0,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t,
                mcol_scan_32x32_neighbors[1025 * MAX_NEIGHBORS]) = {
  0, 0, 0, 0, 32, 32, 64, 64, 96, 96, 128, 128, 160, 160, 192, 192,
  224, 224, 256, 256, 288, 288, 320, 320, 352, 352, 384, 384, 416,
  416, 448, 448,
  480, 480, 512, 512, 544, 544, 576, 576, 608, 608, 640, 640, 672,
  672, 704, 704, 736, 736, 768, 768, 800, 800, 832, 832, 864, 864,
  896, 896, 928, 928, 960, 960,
  0, 0, 1, 32, 33, 64, 65, 96, 97, 128, 129, 160, 161, 192, 193,
  224, 225, 256, 257, 288, 289, 320, 321, 352, 353, 384, 385, 416,
  417, 448, 449, 480,
  481, 512, 513, 544, 545, 576, 577, 608, 609, 640, 641, 672, 673,
  704, 705, 736, 737, 768, 769, 800, 801, 832, 833, 864, 865, 896,
  897, 928, 929, 960, 961, 992,
  1, 1, 2, 33, 34, 65, 66, 97, 98, 129, 130, 161, 162, 193, 194,
  225, 226, 257, 258, 289, 290, 321, 322, 353, 354, 385, 386, 417,
  418, 449, 450, 481,
  482, 513, 514, 545, 546, 577, 578, 609, 610, 641, 642, 673, 674,
  705, 706, 737, 738, 769, 770, 801, 802, 833, 834, 865, 866, 897,
  898, 929, 930, 961, 962, 993,
  2, 2, 3, 34, 35, 66, 67, 98, 99, 130, 131, 162, 163, 194, 195,
  226, 227, 258, 259, 290, 291, 322, 323, 354, 355, 386, 387, 418,
  419, 450, 451, 482,
  483, 514, 515, 546, 547, 578, 579, 610, 611, 642, 643, 674, 675,
  706, 707, 738, 739, 770, 771, 802, 803, 834, 835, 866, 867, 898,
  899, 930, 931, 962, 963, 994,
  3, 3, 4, 35, 36, 67, 68, 99, 100, 131, 132, 163, 164, 195, 196,
  227, 228, 259, 260, 291, 292, 323, 324, 355, 356, 387, 388, 419,
  420, 451, 452, 483,
  484, 515, 516, 547, 548, 579, 580, 611, 612, 643, 644, 675, 676,
  707, 708, 739, 740, 771, 772, 803, 804, 835, 836, 867, 868, 899,
  900, 931, 932, 963, 964, 995,
  4, 4, 5, 36, 37, 68, 69, 100, 101, 132, 133, 164, 165, 196, 197,
  228, 229, 260, 261, 292, 293, 324, 325, 356, 357, 388, 389, 420,
  421, 452, 453, 484,
  485, 516, 517, 548, 549, 580, 581, 612, 613, 644, 645, 676, 677,
  708, 709, 740, 741, 772, 773, 804, 805, 836, 837, 868, 869, 900,
  901, 932, 933, 964, 965, 996,
  5, 5, 6, 37, 38, 69, 70, 101, 102, 133, 134, 165, 166, 197, 198,
  229, 230, 261, 262, 293, 294, 325, 326, 357, 358, 389, 390, 421,
  422, 453, 454, 485,
  486, 517, 518, 549, 550, 581, 582, 613, 614, 645, 646, 677, 678,
  709, 710, 741, 742, 773, 774, 805, 806, 837, 838, 869, 870, 901,
  902, 933, 934, 965, 966, 997,
  6, 6, 7, 38, 39, 70, 71, 102, 103, 134, 135, 166, 167, 198, 199,
  230, 231, 262, 263, 294, 295, 326, 327, 358, 359, 390, 391, 422,
  423, 454, 455, 486,
  487, 518, 519, 550, 551, 582, 583, 614, 615, 646, 647, 678, 679,
  710, 711, 742, 743, 774, 775, 806, 807, 838, 839, 870, 871, 902,
  903, 934, 935, 966, 967, 998,
  7, 7, 8, 39, 40, 71, 72, 103, 104, 135, 136, 167, 168, 199, 200,
  231, 232, 263, 264, 295, 296, 327, 328, 359, 360, 391, 392, 423,
  424, 455, 456, 487,
  488, 519, 520, 551, 552, 583, 584, 615, 616, 647, 648, 679, 680,
  711, 712, 743, 744, 775, 776, 807, 808, 839, 840, 871, 872, 903,
  904, 935, 936, 967, 968, 999,
  8, 8, 9, 40, 41, 72, 73, 104, 105, 136, 137, 168, 169, 200, 201,
  232, 233, 264, 265, 296, 297, 328, 329, 360, 361, 392, 393, 424,
  425, 456, 457, 488,
  489, 520, 521, 552, 553, 584, 585, 616, 617, 648, 649, 680, 681,
  712, 713, 744, 745, 776, 777, 808, 809, 840, 841, 872, 873, 904,
  905, 936, 937, 968, 969, 1000,
  9, 9, 10, 41, 42, 73, 74, 105, 106, 137, 138, 169, 170, 201, 202,
  233, 234, 265, 266, 297, 298, 329, 330, 361, 362, 393, 394, 425,
  426, 457, 458, 489,
  490, 521, 522, 553, 554, 585, 586, 617, 618, 649, 650, 681, 682,
  713, 714, 745, 746, 777, 778, 809, 810, 841, 842, 873, 874, 905,
  906, 937, 938, 969, 970, 1001,
  10, 10, 11, 42, 43, 74, 75, 106, 107, 138, 139, 170, 171, 202,
  203, 234, 235, 266, 267, 298, 299, 330, 331, 362, 363, 394, 395,
  426, 427, 458, 459, 490,
  491, 522, 523, 554, 555, 586, 587, 618, 619, 650, 651, 682, 683,
  714, 715, 746, 747, 778, 779, 810, 811, 842, 843, 874, 875, 906,
  907, 938, 939, 970, 971, 1002,
  11, 11, 12, 43, 44, 75, 76, 107, 108, 139, 140, 171, 172, 203,
  204, 235, 236, 267, 268, 299, 300, 331, 332, 363, 364, 395, 396,
  427, 428, 459, 460, 491,
  492, 523, 524, 555, 556, 587, 588, 619, 620, 651, 652, 683, 684,
  715, 716, 747, 748, 779, 780, 811, 812, 843, 844, 875, 876, 907,
  908, 939, 940, 971, 972, 1003,
  12, 12, 13, 44, 45, 76, 77, 108, 109, 140, 141, 172, 173, 204,
  205, 236, 237, 268, 269, 300, 301, 332, 333, 364, 365, 396, 397,
  428, 429, 460, 461, 492,
  493, 524, 525, 556, 557, 588, 589, 620, 621, 652, 653, 684, 685,
  716, 717, 748, 749, 780, 781, 812, 813, 844, 845, 876, 877, 908,
  909, 940, 941, 972, 973, 1004,
  13, 13, 14, 45, 46, 77, 78, 109, 110, 141, 142, 173, 174, 205,
  206, 237, 238, 269, 270, 301, 302, 333, 334, 365, 366, 397, 398,
  429, 430, 461, 462, 493,
  494, 525, 526, 557, 558, 589, 590, 621, 622, 653, 654, 685, 686,
  717, 718, 749, 750, 781, 782, 813, 814, 845, 846, 877, 878, 909,
  910, 941, 942, 973, 974, 1005,
  14, 14, 15, 46, 47, 78, 79, 110, 111, 142, 143, 174, 175, 206,
  207, 238, 239, 270, 271, 302, 303, 334, 335, 366, 367, 398, 399,
  430, 431, 462, 463, 494,
  495, 526, 527, 558, 559, 590, 591, 622, 623, 654, 655, 686, 687,
  718, 719, 750, 751, 782, 783, 814, 815, 846, 847, 878, 879, 910,
  911, 942, 943, 974, 975, 1006,
  15, 15, 16, 47, 48, 79, 80, 111, 112, 143, 144, 175, 176, 207,
  208, 239, 240, 271, 272, 303, 304, 335, 336, 367, 368, 399, 400,
  431, 432, 463, 464, 495,
  496, 527, 528, 559, 560, 591, 592, 623, 624, 655, 656, 687, 688,
  719, 720, 751, 752, 783, 784, 815, 816, 847, 848, 879, 880, 911,
  912, 943, 944, 975, 976, 1007,
  16, 16, 17, 48, 49, 80, 81, 112, 113, 144, 145, 176, 177, 208,
  209, 240, 241, 272, 273, 304, 305, 336, 337, 368, 369, 400, 401,
  432, 433, 464, 465, 496,
  497, 528, 529, 560, 561, 592, 593, 624, 625, 656, 657, 688, 689,
  720, 721, 752, 753, 784, 785, 816, 817, 848, 849, 880, 881, 912,
  913, 944, 945, 976, 977, 1008,
  17, 17, 18, 49, 50, 81, 82, 113, 114, 145, 146, 177, 178, 209,
  210, 241, 242, 273, 274, 305, 306, 337, 338, 369, 370, 401, 402,
  433, 434, 465, 466, 497,
  498, 529, 530, 561, 562, 593, 594, 625, 626, 657, 658, 689, 690,
  721, 722, 753, 754, 785, 786, 817, 818, 849, 850, 881, 882, 913,
  914, 945, 946, 977, 978, 1009,
  18, 18, 19, 50, 51, 82, 83, 114, 115, 146, 147, 178, 179, 210,
  211, 242, 243, 274, 275, 306, 307, 338, 339, 370, 371, 402, 403,
  434, 435, 466, 467, 498,
  499, 530, 531, 562, 563, 594, 595, 626, 627, 658, 659, 690, 691,
  722, 723, 754, 755, 786, 787, 818, 819, 850, 851, 882, 883, 914,
  915, 946, 947, 978, 979, 1010,
  19, 19, 20, 51, 52, 83, 84, 115, 116, 147, 148, 179, 180, 211,
  212, 243, 244, 275, 276, 307, 308, 339, 340, 371, 372, 403, 404,
  435, 436, 467, 468, 499,
  500, 531, 532, 563, 564, 595, 596, 627, 628, 659, 660, 691, 692,
  723, 724, 755, 756, 787, 788, 819, 820, 851, 852, 883, 884, 915,
  916, 947, 948, 979, 980, 1011,
  20, 20, 21, 52, 53, 84, 85, 116, 117, 148, 149, 180, 181, 212,
  213, 244, 245, 276, 277, 308, 309, 340, 341, 372, 373, 404, 405,
  436, 437, 468, 469, 500,
  501, 532, 533, 564, 565, 596, 597, 628, 629, 660, 661, 692, 693,
  724, 725, 756, 757, 788, 789, 820, 821, 852, 853, 884, 885, 916,
  917, 948, 949, 980, 981, 1012,
  21, 21, 22, 53, 54, 85, 86, 117, 118, 149, 150, 181, 182, 213,
  214, 245, 246, 277, 278, 309, 310, 341, 342, 373, 374, 405, 406,
  437, 438, 469, 470, 501,
  502, 533, 534, 565, 566, 597, 598, 629, 630, 661, 662, 693, 694,
  725, 726, 757, 758, 789, 790, 821, 822, 853, 854, 885, 886, 917,
  918, 949, 950, 981, 982, 1013,
  22, 22, 23, 54, 55, 86, 87, 118, 119, 150, 151, 182, 183, 214,
  215, 246, 247, 278, 279, 310, 311, 342, 343, 374, 375, 406, 407,
  438, 439, 470, 471, 502,
  503, 534, 535, 566, 567, 598, 599, 630, 631, 662, 663, 694, 695,
  726, 727, 758, 759, 790, 791, 822, 823, 854, 855, 886, 887, 918,
  919, 950, 951, 982, 983, 1014,
  23, 23, 24, 55, 56, 87, 88, 119, 120, 151, 152, 183, 184, 215,
  216, 247, 248, 279, 280, 311, 312, 343, 344, 375, 376, 407, 408,
  439, 440, 471, 472, 503,
  504, 535, 536, 567, 568, 599, 600, 631, 632, 663, 664, 695, 696,
  727, 728, 759, 760, 791, 792, 823, 824, 855, 856, 887, 888, 919,
  920, 951, 952, 983, 984, 1015,
  24, 24, 25, 56, 57, 88, 89, 120, 121, 152, 153, 184, 185, 216,
  217, 248, 249, 280, 281, 312, 313, 344, 345, 376, 377, 408, 409,
  440, 441, 472, 473, 504,
  505, 536, 537, 568, 569, 600, 601, 632, 633, 664, 665, 696, 697,
  728, 729, 760, 761, 792, 793, 824, 825, 856, 857, 888, 889, 920,
  921, 952, 953, 984, 985, 1016,
  25, 25, 26, 57, 58, 89, 90, 121, 122, 153, 154, 185, 186, 217,
  218, 249, 250, 281, 282, 313, 314, 345, 346, 377, 378, 409, 410,
  441, 442, 473, 474, 505,
  506, 537, 538, 569, 570, 601, 602, 633, 634, 665, 666, 697, 698,
  729, 730, 761, 762, 793, 794, 825, 826, 857, 858, 889, 890, 921,
  922, 953, 954, 985, 986, 1017,
  26, 26, 27, 58, 59, 90, 91, 122, 123, 154, 155, 186, 187, 218,
  219, 250, 251, 282, 283, 314, 315, 346, 347, 378, 379, 410, 411,
  442, 443, 474, 475, 506,
  507, 538, 539, 570, 571, 602, 603, 634, 635, 666, 667, 698, 699,
  730, 731, 762, 763, 794, 795, 826, 827, 858, 859, 890, 891, 922,
  923, 954, 955, 986, 987, 1018,
  27, 27, 28, 59, 60, 91, 92, 123, 124, 155, 156, 187, 188, 219,
  220, 251, 252, 283, 284, 315, 316, 347, 348, 379, 380, 411, 412,
  443, 444, 475, 476, 507,
  508, 539, 540, 571, 572, 603, 604, 635, 636, 667, 668, 699, 700,
  731, 732, 763, 764, 795, 796, 827, 828, 859, 860, 891, 892, 923,
  924, 955, 956, 987, 988, 1019,
  28, 28, 29, 60, 61, 92, 93, 124, 125, 156, 157, 188, 189, 220,
  221, 252, 253, 284, 285, 316, 317, 348, 349, 380, 381, 412, 413,
  444, 445, 476, 477, 508,
  509, 540, 541, 572, 573, 604, 605, 636, 637, 668, 669, 700, 701,
  732, 733, 764, 765, 796, 797, 828, 829, 860, 861, 892, 893, 924,
  925, 956, 957, 988, 989, 1020,
  29, 29, 30, 61, 62, 93, 94, 125, 126, 157, 158, 189, 190, 221,
  222, 253, 254, 285, 286, 317, 318, 349, 350, 381, 382, 413, 414,
  445, 446, 477, 478, 509,
  510, 541, 542, 573, 574, 605, 606, 637, 638, 669, 670, 701, 702,
  733, 734, 765, 766, 797, 798, 829, 830, 861, 862, 893, 894, 925,
  926, 957, 958, 989, 990, 1021,
  30, 30, 31, 62, 63, 94, 95, 126, 127, 158, 159, 190, 191, 222,
  223, 254, 255, 286, 287, 318, 319, 350, 351, 382, 383, 414, 415,
  446, 447, 478, 479, 510,
  511, 542, 543, 574, 575, 606, 607, 638, 639, 670, 671, 702, 703,
  734, 735, 766, 767, 798, 799, 830, 831, 862, 863, 894, 895, 926,
  927, 958, 959, 990, 991, 1022,
  0, 0,
};

DECLARE_ALIGNED(16, static const int16_t,
                mrow_scan_32x32_neighbors[1025 * MAX_NEIGHBORS]) = {
  0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9,
  9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14,
  15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
  23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30,
  0, 0, 1, 32, 2, 33, 3, 34, 4, 35, 5, 36, 6, 37, 7, 38, 8, 39, 9,
  40, 10, 41, 11, 42, 12, 43, 13, 44, 14, 45, 15, 46,
  16, 47, 17, 48, 18, 49, 19, 50, 20, 51, 21, 52, 22, 53, 23, 54,
  24, 55, 25, 56, 26, 57, 27, 58, 28, 59, 29, 60, 30, 61, 31, 62,
  32, 32, 33, 64, 34, 65, 35, 66, 36, 67, 37, 68, 38, 69, 39, 70,
  40, 71, 41, 72, 42, 73, 43, 74, 44, 75, 45, 76, 46, 77, 47, 78,
  48, 79, 49, 80, 50, 81, 51, 82, 52, 83, 53, 84, 54, 85, 55, 86,
  56, 87, 57, 88, 58, 89, 59, 90, 60, 91, 61, 92, 62, 93, 63, 94,
  64, 64, 65, 96, 66, 97, 67, 98, 68, 99, 69, 100, 70, 101, 71,
  102, 72, 103, 73, 104, 74, 105, 75, 106, 76, 107, 77, 108, 78,
  109, 79, 110,
  80, 111, 81, 112, 82, 113, 83, 114, 84, 115, 85, 116, 86, 117,
  87, 118, 88, 119, 89, 120, 90, 121, 91, 122, 92, 123, 93, 124,
  94, 125, 95, 126,
  96, 96, 97, 128, 98, 129, 99, 130, 100, 131, 101, 132, 102,
  133, 103, 134, 104, 135, 105, 136, 106, 137, 107, 138, 108,
  139, 109, 140, 110, 141, 111, 142,
  112, 143, 113, 144, 114, 145, 115, 146, 116, 147, 117, 148,
  118, 149, 119, 150, 120, 151, 121, 152, 122, 153, 123, 154,
  124, 155, 125, 156, 126, 157, 127, 158,
  128, 128, 129, 160, 130, 161, 131, 162, 132, 163, 133, 164,
  134, 165, 135, 166, 136, 167, 137, 168, 138, 169, 139, 170,
  140, 171, 141, 172, 142, 173, 143, 174,
  144, 175, 145, 176, 146, 177, 147, 178, 148, 179, 149, 180,
  150, 181, 151, 182, 152, 183, 153, 184, 154, 185, 155, 186,
  156, 187, 157, 188, 158, 189, 159, 190,
  160, 160, 161, 192, 162, 193, 163, 194, 164, 195, 165, 196,
  166, 197, 167, 198, 168, 199, 169, 200, 170, 201, 171, 202,
  172, 203, 173, 204, 174, 205, 175, 206,
  176, 207, 177, 208, 178, 209, 179, 210, 180, 211, 181, 212,
  182, 213, 183, 214, 184, 215, 185, 216, 186, 217, 187, 218,
  188, 219, 189, 220, 190, 221, 191, 222,
  192, 192, 193, 224, 194, 225, 195, 226, 196, 227, 197, 228,
  198, 229, 199, 230, 200, 231, 201, 232, 202, 233, 203, 234,
  204, 235, 205, 236, 206, 237, 207, 238,
  208, 239, 209, 240, 210, 241, 211, 242, 212, 243, 213, 244,
  214, 245, 215, 246, 216, 247, 217, 248, 218, 249, 219, 250,
  220, 251, 221, 252, 222, 253, 223, 254,
  224, 224, 225, 256, 226, 257, 227, 258, 228, 259, 229, 260,
  230, 261, 231, 262, 232, 263, 233, 264, 234, 265, 235, 266,
  236, 267, 237, 268, 238, 269, 239, 270,
  240, 271, 241, 272, 242, 273, 243, 274, 244, 275, 245, 276,
  246, 277, 247, 278, 248, 279, 249, 280, 250, 281, 251, 282,
  252, 283, 253, 284, 254, 285, 255, 286,
  256, 256, 257, 288, 258, 289, 259, 290, 260, 291, 261, 292,
  262, 293, 263, 294, 264, 295, 265, 296, 266, 297, 267, 298,
  268, 299, 269, 300, 270, 301, 271, 302,
  272, 303, 273, 304, 274, 305, 275, 306, 276, 307, 277, 308,
  278, 309, 279, 310, 280, 311, 281, 312, 282, 313, 283, 314,
  284, 315, 285, 316, 286, 317, 287, 318,
  288, 288, 289, 320, 290, 321, 291, 322, 292, 323, 293, 324,
  294, 325, 295, 326, 296, 327, 297, 328, 298, 329, 299, 330,
  300, 331, 301, 332, 302, 333, 303, 334,
  304, 335, 305, 336, 306, 337, 307, 338, 308, 339, 309, 340,
  310, 341, 311, 342, 312, 343, 313, 344, 314, 345, 315, 346,
  316, 347, 317, 348, 318, 349, 319, 350,
  320, 320, 321, 352, 322, 353, 323, 354, 324, 355, 325, 356,
  326, 357, 327, 358, 328, 359, 329, 360, 330, 361, 331, 362,
  332, 363, 333, 364, 334, 365, 335, 366,
  336, 367, 337, 368, 338, 369, 339, 370, 340, 371, 341, 372,
  342, 373, 343, 374, 344, 375, 345, 376, 346, 377, 347, 378,
  348, 379, 349, 380, 350, 381, 351, 382,
  352, 352, 353, 384, 354, 385, 355, 386, 356, 387, 357, 388,
  358, 389, 359, 390, 360, 391, 361, 392, 362, 393, 363, 394,
  364, 395, 365, 396, 366, 397, 367, 398,
  368, 399, 369, 400, 370, 401, 371, 402, 372, 403, 373, 404,
  374, 405, 375, 406, 376, 407, 377, 408, 378, 409, 379, 410,
  380, 411, 381, 412, 382, 413, 383, 414,
  384, 384, 385, 416, 386, 417, 387, 418, 388, 419, 389, 420,
  390, 421, 391, 422, 392, 423, 393, 424, 394, 425, 395, 426,
  396, 427, 397, 428, 398, 429, 399, 430,
  400, 431, 401, 432, 402, 433, 403, 434, 404, 435, 405, 436,
  406, 437, 407, 438, 408, 439, 409, 440, 410, 441, 411, 442,
  412, 443, 413, 444, 414, 445, 415, 446,
  416, 416, 417, 448, 418, 449, 419, 450, 420, 451, 421, 452,
  422, 453, 423, 454, 424, 455, 425, 456, 426, 457, 427, 458,
  428, 459, 429, 460, 430, 461, 431, 462,
  432, 463, 433, 464, 434, 465, 435, 466, 436, 467, 437, 468,
  438, 469, 439, 470, 440, 471, 441, 472, 442, 473, 443, 474,
  444, 475, 445, 476, 446, 477, 447, 478,
  448, 448, 449, 480, 450, 481, 451, 482, 452, 483, 453, 484,
  454, 485, 455, 486, 456, 487, 457, 488, 458, 489, 459, 490,
  460, 491, 461, 492, 462, 493, 463, 494,
  464, 495, 465, 496, 466, 497, 467, 498, 468, 499, 469, 500,
  470, 501, 471, 502, 472, 503, 473, 504, 474, 505, 475, 506,
  476, 507, 477, 508, 478, 509, 479, 510,
  480, 480, 481, 512, 482, 513, 483, 514, 484, 515, 485, 516,
  486, 517, 487, 518, 488, 519, 489, 520, 490, 521, 491, 522,
  492, 523, 493, 524, 494, 525, 495, 526,
  496, 527, 497, 528, 498, 529, 499, 530, 500, 531, 501, 532,
  502, 533, 503, 534, 504, 535, 505, 536, 506, 537, 507, 538,
  508, 539, 509, 540, 510, 541, 511, 542,
  512, 512, 513, 544, 514, 545, 515, 546, 516, 547, 517, 548,
  518, 549, 519, 550, 520, 551, 521, 552, 522, 553, 523, 554,
  524, 555, 525, 556, 526, 557, 527, 558,
  528, 559, 529, 560, 530, 561, 531, 562, 532, 563, 533, 564,
  534, 565, 535, 566, 536, 567, 537, 568, 538, 569, 539, 570,
  540, 571, 541, 572, 542, 573, 543, 574,
  544, 544, 545, 576, 546, 577, 547, 578, 548, 579, 549, 580,
  550, 581, 551, 582, 552, 583, 553, 584, 554, 585, 555, 586,
  556, 587, 557, 588, 558, 589, 559, 590,
  560, 591, 561, 592, 562, 593, 563, 594, 564, 595, 565, 596,
  566, 597, 567, 598, 568, 599, 569, 600, 570, 601, 571, 602,
  572, 603, 573, 604, 574, 605, 575, 606,
  576, 576, 577, 608, 578, 609, 579, 610, 580, 611, 581, 612,
  582, 613, 583, 614, 584, 615, 585, 616, 586, 617, 587, 618,
  588, 619, 589, 620, 590, 621, 591, 622,
  592, 623, 593, 624, 594, 625, 595, 626, 596, 627, 597, 628,
  598, 629, 599, 630, 600, 631, 601, 632, 602, 633, 603, 634,
  604, 635, 605, 636, 606, 637, 607, 638,
  608, 608, 609, 640, 610, 641, 611, 642, 612, 643, 613, 644,
  614, 645, 615, 646, 616, 647, 617, 648, 618, 649, 619, 650,
  620, 651, 621, 652, 622, 653, 623, 654,
  624, 655, 625, 656, 626, 657, 627, 658, 628, 659, 629, 660,
  630, 661, 631, 662, 632, 663, 633, 664, 634, 665, 635, 666,
  636, 667, 637, 668, 638, 669, 639, 670,
  640, 640, 641, 672, 642, 673, 643, 674, 644, 675, 645, 676,
  646, 677, 647, 678, 648, 679, 649, 680, 650, 681, 651, 682,
  652, 683, 653, 684, 654, 685, 655, 686,
  656, 687, 657, 688, 658, 689, 659, 690, 660, 691, 661, 692,
  662, 693, 663, 694, 664, 695, 665, 696, 666, 697, 667, 698,
  668, 699, 669, 700, 670, 701, 671, 702,
  672, 672, 673, 704, 674, 705, 675, 706, 676, 707, 677, 708,
  678, 709, 679, 710, 680, 711, 681, 712, 682, 713, 683, 714,
  684, 715, 685, 716, 686, 717, 687, 718,
  688, 719, 689, 720, 690, 721, 691, 722, 692, 723, 693, 724,
  694, 725, 695, 726, 696, 727, 697, 728, 698, 729, 699, 730,
  700, 731, 701, 732, 702, 733, 703, 734,
  704, 704, 705, 736, 706, 737, 707, 738, 708, 739, 709, 740,
  710, 741, 711, 742, 712, 743, 713, 744, 714, 745, 715, 746,
  716, 747, 717, 748, 718, 749, 719, 750,
  720, 751, 721, 752, 722, 753, 723, 754, 724, 755, 725, 756,
  726, 757, 727, 758, 728, 759, 729, 760, 730, 761, 731, 762,
  732, 763, 733, 764, 734, 765, 735, 766,
  736, 736, 737, 768, 738, 769, 739, 770, 740, 771, 741, 772,
  742, 773, 743, 774, 744, 775, 745, 776, 746, 777, 747, 778,
  748, 779, 749, 780, 750, 781, 751, 782,
  752, 783, 753, 784, 754, 785, 755, 786, 756, 787, 757, 788,
  758, 789, 759, 790, 760, 791, 761, 792, 762, 793, 763, 794,
  764, 795, 765, 796, 766, 797, 767, 798,
  768, 768, 769, 800, 770, 801, 771, 802, 772, 803, 773, 804,
  774, 805, 775, 806, 776, 807, 777, 808, 778, 809, 779, 810,
  780, 811, 781, 812, 782, 813, 783, 814,
  784, 815, 785, 816, 786, 817, 787, 818, 788, 819, 789, 820,
  790, 821, 791, 822, 792, 823, 793, 824, 794, 825, 795, 826,
  796, 827, 797, 828, 798, 829, 799, 830,
  800, 800, 801, 832, 802, 833, 803, 834, 804, 835, 805, 836,
  806, 837, 807, 838, 808, 839, 809, 840, 810, 841, 811, 842,
  812, 843, 813, 844, 814, 845, 815, 846,
  816, 847, 817, 848, 818, 849, 819, 850, 820, 851, 821, 852,
  822, 853, 823, 854, 824, 855, 825, 856, 826, 857, 827, 858,
  828, 859, 829, 860, 830, 861, 831, 862,
  832, 832, 833, 864, 834, 865, 835, 866, 836, 867, 837, 868,
  838, 869, 839, 870, 840, 871, 841, 872, 842, 873, 843, 874,
  844, 875, 845, 876, 846, 877, 847, 878,
  848, 879, 849, 880, 850, 881, 851, 882, 852, 883, 853, 884,
  854, 885, 855, 886, 856, 887, 857, 888, 858, 889, 859, 890,
  860, 891, 861, 892, 862, 893, 863, 894,
  864, 864, 865, 896, 866, 897, 867, 898, 868, 899, 869, 900,
  870, 901, 871, 902, 872, 903, 873, 904, 874, 905, 875, 906,
  876, 907, 877, 908, 878, 909, 879, 910,
  880, 911, 881, 912, 882, 913, 883, 914, 884, 915, 885, 916,
  886, 917, 887, 918, 888, 919, 889, 920, 890, 921, 891, 922,
  892, 923, 893, 924, 894, 925, 895, 926,
  896, 896, 897, 928, 898, 929, 899, 930, 900, 931, 901, 932,
  902, 933, 903, 934, 904, 935, 905, 936, 906, 937, 907, 938,
  908, 939, 909, 940, 910, 941, 911, 942,
  912, 943, 913, 944, 914, 945, 915, 946, 916, 947, 917, 948,
  918, 949, 919, 950, 920, 951, 921, 952, 922, 953, 923, 954,
  924, 955, 925, 956, 926, 957, 927, 958,
  928, 928, 929, 960, 930, 961, 931, 962, 932, 963, 933, 964,
  934, 965, 935, 966, 936, 967, 937, 968, 938, 969, 939, 970,
  940, 971, 941, 972, 942, 973, 943, 974,
  944, 975, 945, 976, 946, 977, 947, 978, 948, 979, 949, 980,
  950, 981, 951, 982, 952, 983, 953, 984, 954, 985, 955, 986,
  956, 987, 957, 988, 958, 989, 959, 990,
  960, 960, 961, 992, 962, 993, 963, 994, 964, 995, 965, 996,
  966, 997, 967, 998, 968, 999, 969, 1000, 970, 1001, 971, 1002,
  972, 1003, 973, 1004, 974, 1005, 975, 1006,
  976, 1007, 977, 1008, 978, 1009, 979, 1010, 980, 1011, 981,
  1012, 982, 1013, 983, 1014, 984, 1015, 985, 1016, 986, 1017,
  987, 1018, 988, 1019, 989, 1020, 990, 1021, 991, 1022,
  0, 0,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t,
                default_scan_32x32_neighbors[1025 * MAX_NEIGHBORS]) = {
  0,   0,   0,   0,  32,   0,  32,  32,   1,  32,  33,   1,
  64,  64,  33,  64,   2,  33,  96,  96,  34,   2,  65,  96,
  34,  65, 128, 128,  97, 128,   3,  34,  66,  97,  35,   3,
  35,  66,  98, 129, 129, 160, 160, 161,   4,  35,  67,  98,
  192, 192,  36,   4, 130, 161, 161, 192,  36,  67,  99, 130,
  5,  36,  68,  99, 193, 224, 162, 193, 224, 225, 131, 162,
  37,  68, 100, 131,  37,   5, 194, 225, 225, 256, 256, 257,
  163, 194,  69, 100, 132, 163,   6,  37, 226, 257,  38,   6,
  195, 226, 257, 288, 101, 132, 288, 289,  38,  69, 164, 195,
  133, 164, 258, 289, 227, 258, 196, 227,   7,  38, 289, 320,
  70, 101, 320, 321,  39,   7, 165, 196,  39,  70, 102, 133,
  290, 321, 259, 290, 228, 259, 321, 352, 352, 353, 197, 228,
  134, 165,  71, 102,   8,  39, 322, 353, 291, 322, 260, 291,
  103, 134, 353, 384, 166, 197, 229, 260,  40,  71,  40,   8,
  384, 385, 135, 166, 354, 385, 323, 354, 198, 229, 292, 323,
  72, 103, 261, 292,   9,  40, 385, 416, 167, 198, 104, 135,
  230, 261, 355, 386, 416, 417, 293, 324, 324, 355,  41,   9,
  41,  72, 386, 417, 199, 230, 136, 167, 417, 448, 262, 293,
  356, 387,  73, 104, 387, 418, 231, 262,  10,  41, 168, 199,
  325, 356, 418, 449, 105, 136, 448, 449,  42,  73, 294, 325,
  200, 231,  42,  10, 357, 388, 137, 168, 263, 294, 388, 419,
  74, 105, 419, 450, 449, 480, 326, 357, 232, 263, 295, 326,
  169, 200,  11,  42, 106, 137, 480, 481, 450, 481, 358, 389,
  264, 295, 201, 232, 138, 169, 389, 420,  43,  74, 420, 451,
  327, 358,  43,  11, 481, 512, 233, 264, 451, 482, 296, 327,
  75, 106, 170, 201, 482, 513, 512, 513, 390, 421, 359, 390,
  421, 452, 107, 138,  12,  43, 202, 233, 452, 483, 265, 296,
  328, 359, 139, 170,  44,  75, 483, 514, 513, 544, 234, 265,
  297, 328, 422, 453,  44,  12, 391, 422, 171, 202,  76, 107,
  514, 545, 453, 484, 544, 545, 266, 297, 203, 234, 108, 139,
  329, 360, 298, 329, 140, 171, 515, 546,  13,  44, 423, 454,
  235, 266, 545, 576, 454, 485,  45,  76, 172, 203, 330, 361,
  576, 577,  45,  13, 267, 298, 546, 577,  77, 108, 204, 235,
  455, 486, 577, 608, 299, 330, 109, 140, 547, 578,  14,  45,
  46,  14, 141, 172, 578, 609, 331, 362,  46,  77, 173, 204,
  15,  15,  78, 109, 205, 236, 579, 610, 110, 141,  15,  46,
  142, 173,  47,  78, 174, 205,  16,  16,  79, 110, 206, 237,
  16,  47, 111, 142,  48,  79, 143, 174,  80, 111, 175, 206,
  17,  48,  49,  17, 207, 238,  49,  80,  81, 112,  18,  18,
  18,  49,  50,  81,  82, 113,  19,  50,  51,  82,  83, 114,
  608, 609, 484, 515, 360, 391, 236, 267, 112, 143,  51,  19,
  640, 640, 609, 640, 516, 547, 485, 516, 392, 423, 361, 392,
  268, 299, 237, 268, 144, 175, 113, 144,  20,  51,  52,  20,
  672, 672, 641, 672, 610, 641, 548, 579, 517, 548, 486, 517,
  424, 455, 393, 424, 362, 393, 300, 331, 269, 300, 238, 269,
  176, 207, 145, 176, 114, 145,  52,  83,  21,  52,  53,  21,
  704, 704, 673, 704, 642, 673, 611, 642, 580, 611, 549, 580,
  518, 549, 487, 518, 456, 487, 425, 456, 394, 425, 363, 394,
  332, 363, 301, 332, 270, 301, 239, 270, 208, 239, 177, 208,
  146, 177, 115, 146,  84, 115,  53,  84,  22,  53,  54,  22,
  705, 736, 674, 705, 643, 674, 581, 612, 550, 581, 519, 550,
  457, 488, 426, 457, 395, 426, 333, 364, 302, 333, 271, 302,
  209, 240, 178, 209, 147, 178,  85, 116,  54,  85,  23,  54,
  706, 737, 675, 706, 582, 613, 551, 582, 458, 489, 427, 458,
  334, 365, 303, 334, 210, 241, 179, 210,  86, 117,  55,  86,
  707, 738, 583, 614, 459, 490, 335, 366, 211, 242,  87, 118,
  736, 737, 612, 643, 488, 519, 364, 395, 240, 271, 116, 147,
  55,  23, 768, 768, 737, 768, 644, 675, 613, 644, 520, 551,
  489, 520, 396, 427, 365, 396, 272, 303, 241, 272, 148, 179,
  117, 148,  24,  55,  56,  24, 800, 800, 769, 800, 738, 769,
  676, 707, 645, 676, 614, 645, 552, 583, 521, 552, 490, 521,
  428, 459, 397, 428, 366, 397, 304, 335, 273, 304, 242, 273,
  180, 211, 149, 180, 118, 149,  56,  87,  25,  56,  57,  25,
  832, 832, 801, 832, 770, 801, 739, 770, 708, 739, 677, 708,
  646, 677, 615, 646, 584, 615, 553, 584, 522, 553, 491, 522,
  460, 491, 429, 460, 398, 429, 367, 398, 336, 367, 305, 336,
  274, 305, 243, 274, 212, 243, 181, 212, 150, 181, 119, 150,
  88, 119,  57,  88,  26,  57,  58,  26, 833, 864, 802, 833,
  771, 802, 709, 740, 678, 709, 647, 678, 585, 616, 554, 585,
  523, 554, 461, 492, 430, 461, 399, 430, 337, 368, 306, 337,
  275, 306, 213, 244, 182, 213, 151, 182,  89, 120,  58,  89,
  27,  58, 834, 865, 803, 834, 710, 741, 679, 710, 586, 617,
  555, 586, 462, 493, 431, 462, 338, 369, 307, 338, 214, 245,
  183, 214,  90, 121,  59,  90, 835, 866, 711, 742, 587, 618,
  463, 494, 339, 370, 215, 246,  91, 122, 864, 865, 740, 771,
  616, 647, 492, 523, 368, 399, 244, 275, 120, 151,  59,  27,
  896, 896, 865, 896, 772, 803, 741, 772, 648, 679, 617, 648,
  524, 555, 493, 524, 400, 431, 369, 400, 276, 307, 245, 276,
  152, 183, 121, 152,  28,  59,  60,  28, 928, 928, 897, 928,
  866, 897, 804, 835, 773, 804, 742, 773, 680, 711, 649, 680,
  618, 649, 556, 587, 525, 556, 494, 525, 432, 463, 401, 432,
  370, 401, 308, 339, 277, 308, 246, 277, 184, 215, 153, 184,
  122, 153,  60,  91,  29,  60,  61,  29, 960, 960, 929, 960,
  898, 929, 867, 898, 836, 867, 805, 836, 774, 805, 743, 774,
  712, 743, 681, 712, 650, 681, 619, 650, 588, 619, 557, 588,
  526, 557, 495, 526, 464, 495, 433, 464, 402, 433, 371, 402,
  340, 371, 309, 340, 278, 309, 247, 278, 216, 247, 185, 216,
  154, 185, 123, 154,  92, 123,  61,  92,  30,  61,  62,  30,
  961, 992, 930, 961, 899, 930, 837, 868, 806, 837, 775, 806,
  713, 744, 682, 713, 651, 682, 589, 620, 558, 589, 527, 558,
  465, 496, 434, 465, 403, 434, 341, 372, 310, 341, 279, 310,
  217, 248, 186, 217, 155, 186,  93, 124,  62,  93,  31,  62,
  962, 993, 931, 962, 838, 869, 807, 838, 714, 745, 683, 714,
  590, 621, 559, 590, 466, 497, 435, 466, 342, 373, 311, 342,
  218, 249, 187, 218,  94, 125,  63,  94, 963, 994, 839, 870,
  715, 746, 591, 622, 467, 498, 343, 374, 219, 250,  95, 126,
  868, 899, 744, 775, 620, 651, 496, 527, 372, 403, 248, 279,
  124, 155, 900, 931, 869, 900, 776, 807, 745, 776, 652, 683,
  621, 652, 528, 559, 497, 528, 404, 435, 373, 404, 280, 311,
  249, 280, 156, 187, 125, 156, 932, 963, 901, 932, 870, 901,
  808, 839, 777, 808, 746, 777, 684, 715, 653, 684, 622, 653,
  560, 591, 529, 560, 498, 529, 436, 467, 405, 436, 374, 405,
  312, 343, 281, 312, 250, 281, 188, 219, 157, 188, 126, 157,
  964, 995, 933, 964, 902, 933, 871, 902, 840, 871, 809, 840,
  778, 809, 747, 778, 716, 747, 685, 716, 654, 685, 623, 654,
  592, 623, 561, 592, 530, 561, 499, 530, 468, 499, 437, 468,
  406, 437, 375, 406, 344, 375, 313, 344, 282, 313, 251, 282,
  220, 251, 189, 220, 158, 189, 127, 158, 965, 996, 934, 965,
  903, 934, 841, 872, 810, 841, 779, 810, 717, 748, 686, 717,
  655, 686, 593, 624, 562, 593, 531, 562, 469, 500, 438, 469,
  407, 438, 345, 376, 314, 345, 283, 314, 221, 252, 190, 221,
  159, 190, 966, 997, 935, 966, 842, 873, 811, 842, 718, 749,
  687, 718, 594, 625, 563, 594, 470, 501, 439, 470, 346, 377,
  315, 346, 222, 253, 191, 222, 967, 998, 843, 874, 719, 750,
  595, 626, 471, 502, 347, 378, 223, 254, 872, 903, 748, 779,
  624, 655, 500, 531, 376, 407, 252, 283, 904, 935, 873, 904,
  780, 811, 749, 780, 656, 687, 625, 656, 532, 563, 501, 532,
  408, 439, 377, 408, 284, 315, 253, 284, 936, 967, 905, 936,
  874, 905, 812, 843, 781, 812, 750, 781, 688, 719, 657, 688,
  626, 657, 564, 595, 533, 564, 502, 533, 440, 471, 409, 440,
  378, 409, 316, 347, 285, 316, 254, 285, 968, 999, 937, 968,
  906, 937, 875, 906, 844, 875, 813, 844, 782, 813, 751, 782,
  720, 751, 689, 720, 658, 689, 627, 658, 596, 627, 565, 596,
  534, 565, 503, 534, 472, 503, 441, 472, 410, 441, 379, 410,
  348, 379, 317, 348, 286, 317, 255, 286, 969, 1000, 938, 969,
  907, 938, 845, 876, 814, 845, 783, 814, 721, 752, 690, 721,
  659, 690, 597, 628, 566, 597, 535, 566, 473, 504, 442, 473,
  411, 442, 349, 380, 318, 349, 287, 318, 970, 1001, 939, 970,
  846, 877, 815, 846, 722, 753, 691, 722, 598, 629, 567, 598,
  474, 505, 443, 474, 350, 381, 319, 350, 971, 1002, 847, 878,
  723, 754, 599, 630, 475, 506, 351, 382, 876, 907, 752, 783,
  628, 659, 504, 535, 380, 411, 908, 939, 877, 908, 784, 815,
  753, 784, 660, 691, 629, 660, 536, 567, 505, 536, 412, 443,
  381, 412, 940, 971, 909, 940, 878, 909, 816, 847, 785, 816,
  754, 785, 692, 723, 661, 692, 630, 661, 568, 599, 537, 568,
  506, 537, 444, 475, 413, 444, 382, 413, 972, 1003, 941, 972,
  910, 941, 879, 910, 848, 879, 817, 848, 786, 817, 755, 786,
  724, 755, 693, 724, 662, 693, 631, 662, 600, 631, 569, 600,
  538, 569, 507, 538, 476, 507, 445, 476, 414, 445, 383, 414,
  973, 1004, 942, 973, 911, 942, 849, 880, 818, 849, 787, 818,
  725, 756, 694, 725, 663, 694, 601, 632, 570, 601, 539, 570,
  477, 508, 446, 477, 415, 446, 974, 1005, 943, 974, 850, 881,
  819, 850, 726, 757, 695, 726, 602, 633, 571, 602, 478, 509,
  447, 478, 975, 1006, 851, 882, 727, 758, 603, 634, 479, 510,
  880, 911, 756, 787, 632, 663, 508, 539, 912, 943, 881, 912,
  788, 819, 757, 788, 664, 695, 633, 664, 540, 571, 509, 540,
  944, 975, 913, 944, 882, 913, 820, 851, 789, 820, 758, 789,
  696, 727, 665, 696, 634, 665, 572, 603, 541, 572, 510, 541,
  976, 1007, 945, 976, 914, 945, 883, 914, 852, 883, 821, 852,
  790, 821, 759, 790, 728, 759, 697, 728, 666, 697, 635, 666,
  604, 635, 573, 604, 542, 573, 511, 542, 977, 1008, 946, 977,
  915, 946, 853, 884, 822, 853, 791, 822, 729, 760, 698, 729,
  667, 698, 605, 636, 574, 605, 543, 574, 978, 1009, 947, 978,
  854, 885, 823, 854, 730, 761, 699, 730, 606, 637, 575, 606,
  979, 1010, 855, 886, 731, 762, 607, 638, 884, 915, 760, 791,
  636, 667, 916, 947, 885, 916, 792, 823, 761, 792, 668, 699,
  637, 668, 948, 979, 917, 948, 886, 917, 824, 855, 793, 824,
  762, 793, 700, 731, 669, 700, 638, 669, 980, 1011, 949, 980,
  918, 949, 887, 918, 856, 887, 825, 856, 794, 825, 763, 794,
  732, 763, 701, 732, 670, 701, 639, 670, 981, 1012, 950, 981,
  919, 950, 857, 888, 826, 857, 795, 826, 733, 764, 702, 733,
  671, 702, 982, 1013, 951, 982, 858, 889, 827, 858, 734, 765,
  703, 734, 983, 1014, 859, 890, 735, 766, 888, 919, 764, 795,
  920, 951, 889, 920, 796, 827, 765, 796, 952, 983, 921, 952,
  890, 921, 828, 859, 797, 828, 766, 797, 984, 1015, 953, 984,
  922, 953, 891, 922, 860, 891, 829, 860, 798, 829, 767, 798,
  985, 1016, 954, 985, 923, 954, 861, 892, 830, 861, 799, 830,
  986, 1017, 955, 986, 862, 893, 831, 862, 987, 1018, 863, 894,
  892, 923, 924, 955, 893, 924, 956, 987, 925, 956, 894, 925,
  988, 1019, 957, 988, 926, 957, 895, 926, 989, 1020, 958, 989,
  927, 958, 990, 1021, 959, 990, 991, 1022,   0,   0,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t,
                v2_scan_32x32_neighbors[1025 * MAX_NEIGHBORS]) = {
  0,  0,  0,  0,  0,  0,  1, 32,  1,  1, 32, 32,
  2, 33, 33, 64, 34, 65,  2,  2, 64, 64,  3, 34,
  65, 96, 35, 66, 66, 97,  3,  3, 96, 96,  4, 35,
  97, 128,  67,  98,  36,  67,  98, 129,   4,   4,  68,  99,
  99, 130, 128, 128,   5,  36, 129, 160,  37,  68, 130, 161,
  100, 131,  69, 100, 131, 162,   5,   5, 160, 160,   6,  37,
  161, 192,  38,  69, 162, 193, 101, 132, 132, 163,  70, 101,
  163, 194,   6,   6, 192, 192,   7,  38, 133, 164, 193, 224,
  102, 133, 164, 195,  39,  70, 194, 225,  71, 102, 195, 226,
  134, 165, 165, 196,   7,   7, 224, 224,   8,  39, 103, 134,
  196, 227, 225, 256,  40,  71, 226, 257, 166, 197,  72, 103,
  227, 258, 135, 166, 197, 228, 104, 135, 228, 259,   8,   8,
  256, 256,   9,  40, 257, 288,  41,  72, 167, 198, 198, 229,
  258, 289, 136, 167, 229, 260,  73, 104, 259, 290, 105, 136,
  260, 291, 199, 230,   9,   9, 168, 199, 230, 261, 288, 288,
  10,  41, 289, 320,  42,  73, 290, 321, 137, 168, 261, 292,
  74, 105, 291, 322, 200, 231, 231, 262, 106, 137, 292, 323,
  169, 200, 262, 293,  10,  10, 320, 320,  11,  42, 321, 352,
  43,  74, 138, 169, 293, 324, 322, 353, 232, 263,  75, 106,
  201, 232, 263, 294, 323, 354, 170, 201, 294, 325, 107, 138,
  324, 355,  11,  11, 352, 352,  12,  43, 233, 264, 264, 295,
  353, 384, 139, 170, 325, 356,  44,  75, 354, 385, 202, 233,
  295, 326,  76, 107, 355, 386, 171, 202, 326, 357, 108, 139,
  356, 387, 265, 296, 234, 265, 296, 327,  12,  12, 140, 171,
  357, 388, 384, 384,  13,  44, 203, 234, 327, 358, 385, 416,
  45,  76, 386, 417,  77, 108, 387, 418, 172, 203, 358, 389,
  266, 297, 297, 328, 109, 140, 235, 266, 328, 359, 388, 419,
  204, 235, 359, 390, 141, 172, 389, 420,  13,  13, 416, 416,
  14,  45, 417, 448,  46,  77, 298, 329, 418, 449, 267, 298,
  329, 360,  78, 109, 173, 204, 390, 421, 419, 450, 236, 267,
  360, 391, 110, 141, 420, 451, 205, 236, 391, 422, 142, 173,
  299, 330, 330, 361, 421, 452,  14,  14, 268, 299, 361, 392,
  448, 448,  15,  46, 449, 480,  47,  78, 450, 481, 174, 205,
  422, 453, 237, 268, 392, 423,  79, 110, 451, 482, 111, 142,
  452, 483, 331, 362, 300, 331, 362, 393, 206, 237, 423, 454,
  143, 174, 269, 300, 393, 424, 453, 484, 480, 480, 481, 512,
  238, 269, 424, 455, 482, 513, 175, 206, 454, 485, 332, 363,
  363, 394, 483, 514, 301, 332, 394, 425, 484, 515, 207, 238,
  455, 486, 270, 301, 425, 456, 485, 516, 364, 395, 239, 270,
  456, 487, 512, 512, 333, 364, 395, 426, 513, 544, 486, 517,
  514, 545, 302, 333, 426, 457, 515, 546, 487, 518, 516, 547,
  271, 302, 457, 488, 365, 396, 396, 427, 517, 548, 334, 365,
  427, 458, 488, 519, 544, 544, 303, 334, 458, 489, 518, 549,
  545, 576, 546, 577, 547, 578, 489, 520, 397, 428, 519, 550,
  366, 397, 428, 459, 548, 579, 335, 366, 459, 490, 549, 580,
  520, 551, 490, 521, 550, 581, 576, 576, 577, 608, 398, 429,
  429, 460, 578, 609, 367, 398, 460, 491, 521, 552, 579, 610,
  551, 582, 491, 522, 580, 611, 581, 612, 552, 583, 522, 553,
  430, 461, 399, 430, 461, 492, 582, 613, 492, 523, 608, 608,
  609, 640, 610, 641, 553, 584, 611, 642, 523, 554, 583, 614,
  612, 643, 431, 462, 462, 493, 554, 585, 493, 524, 584, 615,
  613, 644, 524, 555, 614, 645, 640, 640, 585, 616, 641, 672,
  555, 586, 642, 673, 615, 646, 463, 494, 643, 674, 494, 525,
  644, 675, 525, 556, 586, 617, 616, 647, 645, 676, 556, 587,
  646, 677, 495, 526, 617, 648, 587, 618, 672, 672, 526, 557,
  673, 704, 674, 705, 647, 678, 557, 588, 675, 706, 618, 649,
  676, 707, 588, 619, 648, 679, 677, 708, 527, 558, 558, 589,
  678, 709, 619, 650, 649, 680, 704, 704, 589, 620, 705, 736,
  679, 710, 706, 737, 707, 738, 650, 681, 620, 651, 708, 739,
  680, 711, 559, 590, 709, 740, 590, 621, 651, 682, 681, 712,
  710, 741, 621, 652, 736, 736, 737, 768, 711, 742, 738, 769,
  682, 713, 652, 683, 739, 770, 591, 622, 740, 771, 712, 743,
  622, 653, 741, 772, 683, 714, 653, 684, 713, 744, 742, 773,
  623, 654, 743, 774, 768, 768, 769, 800, 684, 715, 714, 745,
  770, 801, 771, 802, 654, 685, 744, 775, 772, 803, 715, 746,
  773, 804, 685, 716, 745, 776, 774, 805, 655, 686, 716, 747,
  775, 806, 746, 777, 800, 800, 801, 832, 686, 717, 802, 833,
  803, 834, 776, 807, 804, 835, 747, 778, 717, 748, 805, 836,
  777, 808, 687, 718, 806, 837, 748, 779, 718, 749, 778, 809,
  807, 838, 832, 832, 833, 864, 834, 865, 835, 866, 808, 839,
  749, 780, 836, 867, 779, 810, 719, 750, 837, 868, 809, 840,
  838, 869, 780, 811, 750, 781, 810, 841, 839, 870, 864, 864,
  865, 896, 866, 897, 840, 871, 867, 898, 781, 812, 811, 842,
  868, 899, 751, 782, 869, 900, 841, 872, 812, 843, 870, 901,
  782, 813, 842, 873, 871, 902, 896, 896, 897, 928, 813, 844,
  898, 929, 872, 903, 783, 814, 843, 874, 899, 930, 900, 931,
  873, 904, 901, 932, 814, 845, 844, 875, 902, 933, 874, 905,
  903, 934, 845, 876, 928, 928, 815, 846, 929, 960, 930, 961,
  875, 906, 904, 935, 931, 962, 932, 963, 905, 936, 846, 877,
  933, 964, 876, 907, 934, 965, 906, 937, 935, 966, 877, 908,
  847, 878, 960, 960, 907, 938, 961, 992, 936, 967, 962, 993,
  963, 994, 964, 995, 878, 909, 937, 968, 908, 939, 965, 996,
  966, 997, 938, 969, 879, 910, 909, 940, 967, 998, 939, 970,
  968,  999,  910,  941,  969, 1000,  940,  971,  970, 1001,  911,  942,
  941,  972,  971, 1002,  942,  973,  972, 1003,  943,  974,  973, 1004,
  974, 1005,  975, 1006,   15,   15,   16,   47,   48,   79,   80,  111,
  112, 143, 144, 175,  16,  16,  17,  48, 176, 207,  49,  80,
  81, 112, 113, 144, 208, 239, 145, 176, 240, 271,  17,  17,
  18,  49, 177, 208,  50,  81,  82, 113, 272, 303, 209, 240,
  114, 145, 146, 177, 241, 272, 304, 335, 178, 209,  18,  18,
  19,  50,  51,  82,  83, 114, 273, 304, 210, 241, 115, 146,
  336, 367, 147, 178, 242, 273, 305, 336, 179, 210,  19,  19,
  368, 399,  20,  51,  52,  83, 274, 305,  84, 115, 211, 242,
  337, 368, 116, 147, 306, 337, 148, 179, 243, 274, 400, 431,
  369, 400, 180, 211,  20,  20,  21,  52, 275, 306,  53,  84,
  338, 369, 212, 243,  85, 116, 432, 463, 117, 148, 401, 432,
  307, 338, 244, 275, 149, 180, 370, 401, 181, 212, 276, 307,
  464, 495, 339, 370,  21,  21,  22,  53, 433, 464,  54,  85,
  213, 244,  86, 117, 402, 433, 118, 149, 308, 339, 245, 276,
  371, 402, 150, 181, 496, 527, 465, 496, 182, 213, 434, 465,
  340, 371, 277, 308,  22,  22,  23,  54, 403, 434,  55,  86,
  214, 245,  87, 118, 309, 340, 372, 403, 119, 150, 497, 528,
  528, 559, 246, 277, 466, 497, 151, 182, 435, 466, 341, 372,
  183, 214, 278, 309, 404, 435,  23,  23,  24,  55, 215, 246,
  529, 560,  56,  87, 498, 529, 560, 591, 310, 341,  88, 119,
  373, 404, 467, 498, 120, 151, 247, 278, 436, 467, 152, 183,
  342, 373, 279, 310, 405, 436, 184, 215, 530, 561, 561, 592,
  499, 530, 592, 623,  24,  24, 216, 247, 468, 499,  25,  56,
  374, 405,  57,  88, 311, 342,  89, 120, 437, 468, 248, 279,
  121, 152, 562, 593, 153, 184, 343, 374, 531, 562, 593, 624,
  406, 437, 500, 531, 624, 655, 280, 311, 185, 216, 469, 500,
  375, 406, 217, 248,  25,  25, 312, 343,  26,  57,  58,  89,
  438, 469,  90, 121, 563, 594, 594, 625, 249, 280, 532, 563,
  625, 656, 122, 153, 344, 375, 501, 532, 656, 687, 407, 438,
  154, 185, 281, 312, 470, 501, 186, 217, 376, 407, 595, 626,
  564, 595, 626, 657, 218, 249, 313, 344, 439, 470,  26,  26,
  27,  58, 533, 564, 657, 688,  59,  90,  91, 122, 250, 281,
  502, 533, 688, 719, 123, 154, 408, 439, 345, 376, 155, 186,
  471, 502, 282, 313, 596, 627, 627, 658, 187, 218, 565, 596,
  658, 689, 377, 408, 440, 471, 534, 565, 689, 720, 314, 345,
  219, 250,  27,  27,  28,  59, 503, 534, 720, 751,  60,  91,
  92, 123, 251, 282, 409, 440, 346, 377, 124, 155, 628, 659,
  472, 503, 597, 628, 659, 690, 566, 597, 690, 721, 156, 187,
  283, 314, 535, 566, 721, 752, 188, 219, 378, 409, 441, 472,
  315, 346, 504, 535, 752, 783, 220, 251,  28,  28, 629, 660,
  660, 691,  29,  60,  61,  92, 410, 441, 598, 629, 691, 722,
  252, 283,  93, 124, 347, 378, 473, 504, 567, 598, 722, 753,
  125, 156, 284, 315, 536, 567, 753, 784, 157, 188, 442, 473,
  379, 410, 189, 220, 505, 536, 784, 815, 661, 692, 316, 347,
  630, 661, 692, 723, 221, 252, 599, 630, 723, 754, 411, 442,
  29,  29, 568, 599, 754, 785,  30,  61, 474, 505,  62,  93,
  253, 284, 348, 379,  94, 125, 537, 568, 785, 816, 126, 157,
  285, 316, 158, 189, 443, 474, 662, 693, 693, 724, 380, 411,
  631, 662, 724, 755, 506, 537, 816, 847, 190, 221, 600, 631,
  755, 786, 317, 348, 222, 253, 569, 600, 786, 817, 412, 443,
  475, 506,  30,  30,  31,  62, 349, 380, 254, 285,  63,  94,
  538, 569, 817, 848, 694, 725,  95, 126, 663, 694, 725, 756,
  632, 663, 756, 787, 127, 158, 444, 475, 286, 317, 381, 412,
  507, 538, 848, 879, 159, 190, 601, 632, 787, 818, 191, 222,
  318, 349, 570, 601, 818, 849, 476, 507, 223, 254, 413, 444,
  695, 726, 726, 757, 664, 695, 757, 788, 539, 570, 849, 880,
  350, 381, 255, 286, 633, 664, 788, 819, 445, 476, 602, 633,
  819, 850, 508, 539, 880, 911, 287, 318, 382, 413, 571, 602,
  850, 881, 727, 758, 696, 727, 758, 789, 319, 350, 477, 508,
  665, 696, 789, 820, 414, 445, 540, 571, 881, 912, 634, 665,
  820, 851, 351, 382, 603, 634, 851, 882, 446, 477, 509, 540,
  912, 943, 383, 414, 728, 759, 759, 790, 572, 603, 882, 913,
  697, 728, 790, 821, 666, 697, 821, 852, 478, 509, 635, 666,
  852, 883, 415, 446, 541, 572, 913, 944, 604, 635, 883, 914,
  760, 791, 729, 760, 791, 822, 510, 541, 944, 975, 447, 478,
  698, 729, 822, 853, 573, 604, 914, 945, 667, 698, 853, 884,
  636, 667, 884, 915, 479, 510, 542, 573, 945, 976, 761, 792,
  792, 823, 605, 636, 915, 946, 730, 761, 823, 854, 699, 730,
  854,  885,  511,  542,  976, 1007,  574,  605,  946,  977,  668,  699,
  885,  916,  637,  668,  916,  947,  543,  574,  793,  824,  977, 1008,
  762, 793, 824, 855, 731, 762, 855, 886, 606, 637, 947, 978,
  700,  731,  886,  917,  669,  700,  917,  948,  575,  606,  978, 1009,
  638, 669, 948, 979, 794, 825, 825, 856, 763, 794, 856, 887,
  732,  763,  887,  918,  607,  638,  979, 1010,  701,  732,  918,  949,
  670, 701, 949, 980, 826, 857, 795, 826, 857, 888, 764, 795,
  888,  919,  639,  670,  980, 1011,  733,  764,  919,  950,  702,  733,
  950,  981,  671,  702,  981, 1012,  827,  858,  858,  889,  796,  827,
  889, 920, 765, 796, 920, 951, 734, 765, 951, 982, 703, 734,
  982, 1013,  859,  890,  828,  859,  890,  921,  797,  828,  921,  952,
  766,  797,  952,  983,  735,  766,  983, 1014,  860,  891,  891,  922,
  829,  860,  922,  953,  798,  829,  953,  984,  767,  798,  984, 1015,
  892, 923, 861, 892, 923, 954, 830, 861, 954, 985, 799, 830,
  985, 1016,  893,  924,  924,  955,  862,  893,  955,  986,  831,  862,
  986, 1017,  925,  956,  894,  925,  956,  987,  863,  894,  987, 1018,
  926,  957,  957,  988,  895,  926,  988, 1019,  958,  989,  927,  958,
  989, 1020,  959,  990,  990, 1021,  991, 1022, 0, 0,
};

DECLARE_ALIGNED(16, static const int16_t,
                h2_scan_32x32_neighbors[1025 * MAX_NEIGHBORS]) = {
  0,  0,  0,  0,  0,  0,  1, 32,  1,  1, 32, 32,
  2, 33, 33, 64, 34, 65,  2,  2, 64, 64,  3, 34,
  65, 96, 35, 66, 66, 97,  3,  3, 96, 96,  4, 35,
  97, 128,  67,  98,  36,  67,  98, 129,   4,   4,  68,  99,
  99, 130, 128, 128,   5,  36, 129, 160,  37,  68, 130, 161,
  100, 131,  69, 100, 131, 162,   5,   5, 160, 160,   6,  37,
  161, 192,  38,  69, 162, 193, 101, 132, 132, 163,  70, 101,
  163, 194,   6,   6, 192, 192,   7,  38, 133, 164, 193, 224,
  102, 133, 164, 195,  39,  70, 194, 225,  71, 102, 195, 226,
  134, 165, 165, 196,   7,   7, 224, 224,   8,  39, 103, 134,
  196, 227, 225, 256,  40,  71, 226, 257, 166, 197,  72, 103,
  227, 258, 135, 166, 197, 228, 104, 135, 228, 259,   8,   8,
  256, 256,   9,  40, 257, 288,  41,  72, 167, 198, 198, 229,
  258, 289, 136, 167, 229, 260,  73, 104, 259, 290, 105, 136,
  260, 291, 199, 230,   9,   9, 168, 199, 230, 261, 288, 288,
  10,  41, 289, 320,  42,  73, 290, 321, 137, 168, 261, 292,
  74, 105, 291, 322, 200, 231, 231, 262, 106, 137, 292, 323,
  169, 200, 262, 293,  10,  10, 320, 320,  11,  42, 321, 352,
  43,  74, 138, 169, 293, 324, 322, 353, 232, 263,  75, 106,
  201, 232, 263, 294, 323, 354, 170, 201, 294, 325, 107, 138,
  324, 355,  11,  11, 352, 352,  12,  43, 233, 264, 264, 295,
  353, 384, 139, 170, 325, 356,  44,  75, 354, 385, 202, 233,
  295, 326,  76, 107, 355, 386, 171, 202, 326, 357, 108, 139,
  356, 387, 265, 296, 234, 265, 296, 327,  12,  12, 140, 171,
  357, 388, 384, 384,  13,  44, 203, 234, 327, 358, 385, 416,
  45,  76, 386, 417,  77, 108, 387, 418, 172, 203, 358, 389,
  266, 297, 297, 328, 109, 140, 235, 266, 328, 359, 388, 419,
  204, 235, 359, 390, 141, 172, 389, 420,  13,  13, 416, 416,
  14,  45, 417, 448,  46,  77, 298, 329, 418, 449, 267, 298,
  329, 360,  78, 109, 173, 204, 390, 421, 419, 450, 236, 267,
  360, 391, 110, 141, 420, 451, 205, 236, 391, 422, 142, 173,
  299, 330, 330, 361, 421, 452,  14,  14, 268, 299, 361, 392,
  448, 448,  15,  46, 449, 480,  47,  78, 450, 481, 174, 205,
  422, 453, 237, 268, 392, 423,  79, 110, 451, 482, 111, 142,
  452, 483, 331, 362, 300, 331, 362, 393, 206, 237, 423, 454,
  143, 174, 269, 300, 393, 424, 453, 484,  15,  15,  16,  47,
  48,  79, 238, 269, 424, 455, 175, 206, 454, 485,  80, 111,
  332, 363, 363, 394, 301, 332, 394, 425, 112, 143, 207, 238,
  455, 486, 270, 301, 425, 456, 144, 175, 364, 395,  16,  16,
  239, 270, 456, 487,  17,  48, 333, 364, 395, 426, 176, 207,
  49,  80, 302, 333, 426, 457,  81, 112, 113, 144, 208, 239,
  271, 302, 457, 488, 365, 396, 396, 427, 145, 176, 334, 365,
  427, 458, 240, 271,  17,  17,  18,  49, 177, 208, 303, 334,
  458, 489,  50,  81,  82, 113, 272, 303, 209, 240, 397, 428,
  114, 145, 366, 397, 428, 459, 335, 366, 459, 490, 146, 177,
  241, 272, 304, 335, 178, 209,  18,  18,  19,  50,  51,  82,
  398, 429, 429, 460, 367, 398, 460, 491,  83, 114, 273, 304,
  210, 241, 115, 146, 336, 367, 147, 178, 242, 273, 305, 336,
  430, 461, 399, 430, 461, 492, 179, 210,  19,  19, 368, 399,
  20,  51,  52,  83, 274, 305,  84, 115, 211, 242, 337, 368,
  116, 147, 431, 462, 462, 493, 306, 337, 148, 179, 243, 274,
  400, 431, 369, 400, 180, 211,  20,  20,  21,  52, 275, 306,
  53,  84, 338, 369, 212, 243,  85, 116, 463, 494, 432, 463,
  117, 148, 401, 432, 307, 338, 244, 275, 149, 180, 370, 401,
  181, 212, 276, 307, 464, 495, 339, 370,  21,  21,  22,  53,
  433, 464,  54,  85, 213, 244,  86, 117, 402, 433, 118, 149,
  308, 339, 245, 276, 371, 402, 150, 181, 465, 496, 182, 213,
  434, 465, 340, 371, 277, 308,  22,  22,  23,  54, 403, 434,
  55,  86, 214, 245,  87, 118, 309, 340, 372, 403, 119, 150,
  246, 277, 466, 497, 151, 182, 435, 466, 341, 372, 183, 214,
  278, 309, 404, 435,  23,  23,  24,  55, 215, 246,  56,  87,
  310, 341,  88, 119, 373, 404, 467, 498, 120, 151, 247, 278,
  436, 467, 152, 183, 342, 373, 279, 310, 405, 436, 184, 215,
  24,  24, 216, 247, 468, 499,  25,  56, 374, 405,  57,  88,
  311, 342,  89, 120, 437, 468, 248, 279, 121, 152, 153, 184,
  343, 374, 406, 437, 280, 311, 185, 216, 469, 500, 375, 406,
  217, 248,  25,  25, 312, 343,  26,  57,  58,  89, 438, 469,
  90, 121, 249, 280, 122, 153, 344, 375, 407, 438, 154, 185,
  281, 312, 470, 501, 186, 217, 376, 407, 218, 249, 313, 344,
  439, 470,  26,  26,  27,  58,  59,  90,  91, 122, 250, 281,
  123, 154, 408, 439, 345, 376, 155, 186, 471, 502, 282, 313,
  187, 218, 377, 408, 440, 471, 314, 345, 219, 250,  27,  27,
  28,  59,  60,  91,  92, 123, 251, 282, 409, 440, 346, 377,
  124, 155, 472, 503, 156, 187, 283, 314, 188, 219, 378, 409,
  441, 472, 315, 346, 220, 251,  28,  28,  29,  60,  61,  92,
  410, 441, 252, 283,  93, 124, 347, 378, 473, 504, 125, 156,
  284, 315, 157, 188, 442, 473, 379, 410, 189, 220, 316, 347,
  221, 252, 411, 442,  29,  29,  30,  61, 474, 505,  62,  93,
  253, 284, 348, 379,  94, 125, 126, 157, 285, 316, 158, 189,
  443, 474, 380, 411, 190, 221, 317, 348, 222, 253, 412, 443,
  475, 506,  30,  30,  31,  62, 349, 380, 254, 285,  63,  94,
  95, 126, 127, 158, 444, 475, 286, 317, 381, 412, 159, 190,
  191, 222, 318, 349, 476, 507, 223, 254, 413, 444, 350, 381,
  255, 286, 445, 476, 287, 318, 382, 413, 319, 350, 477, 508,
  414, 445, 351, 382, 446, 477, 383, 414, 478, 509, 415, 446,
  447, 478, 479, 510, 480, 480, 481, 512, 482, 513, 483, 514,
  484, 515, 485, 516, 512, 512, 513, 544, 486, 517, 514, 545,
  515, 546, 487, 518, 516, 547, 517, 548, 488, 519, 544, 544,
  518, 549, 545, 576, 546, 577, 547, 578, 489, 520, 519, 550,
  548, 579, 549, 580, 520, 551, 490, 521, 550, 581, 576, 576,
  577, 608, 578, 609, 521, 552, 579, 610, 551, 582, 491, 522,
  580, 611, 581, 612, 552, 583, 522, 553, 582, 613, 492, 523,
  608, 608, 609, 640, 610, 641, 553, 584, 611, 642, 523, 554,
  583, 614, 612, 643, 554, 585, 493, 524, 584, 615, 613, 644,
  524, 555, 614, 645, 640, 640, 585, 616, 641, 672, 555, 586,
  642, 673, 615, 646, 643, 674, 494, 525, 644, 675, 525, 556,
  586, 617, 616, 647, 645, 676, 556, 587, 646, 677, 495, 526,
  617, 648, 587, 618, 672, 672, 526, 557, 673, 704, 674, 705,
  647, 678, 557, 588, 675, 706, 618, 649, 676, 707, 588, 619,
  648, 679, 677, 708, 496, 527, 527, 558, 558, 589, 678, 709,
  619, 650, 649, 680, 704, 704, 589, 620, 705, 736, 679, 710,
  706, 737, 707, 738, 650, 681, 620, 651, 497, 528, 528, 559,
  708, 739, 680, 711, 559, 590, 709, 740, 590, 621, 651, 682,
  681, 712, 710, 741, 621, 652, 736, 736, 737, 768, 529, 560,
  711, 742, 498, 529, 560, 591, 738, 769, 682, 713, 652, 683,
  739, 770, 591, 622, 740, 771, 712, 743, 622, 653, 741, 772,
  683, 714, 653, 684, 713, 744, 742, 773, 530, 561, 561, 592,
  499, 530, 592, 623, 623, 654, 743, 774, 768, 768, 769, 800,
  684, 715, 714, 745, 770, 801, 771, 802, 654, 685, 744, 775,
  772, 803, 562, 593, 531, 562, 593, 624, 715, 746, 773, 804,
  685, 716, 500, 531, 624, 655, 745, 776, 774, 805, 655, 686,
  716, 747, 775, 806, 746, 777, 800, 800, 801, 832, 686, 717,
  802, 833, 563, 594, 594, 625, 803, 834, 532, 563, 625, 656,
  776, 807, 804, 835, 501, 532, 656, 687, 747, 778, 717, 748,
  805, 836, 777, 808, 687, 718, 806, 837, 748, 779, 595, 626,
  564, 595, 626, 657, 718, 749, 778, 809, 807, 838, 832, 832,
  533, 564, 657, 688, 833, 864, 834, 865, 835, 866, 502, 533,
  688, 719, 808, 839, 749, 780, 836, 867, 779, 810, 719, 750,
  837, 868, 809, 840, 596, 627, 627, 658, 565, 596, 658, 689,
  838, 869, 780, 811, 750, 781, 534, 565, 689, 720, 810, 841,
  839, 870, 864, 864, 503, 534, 720, 751, 865, 896, 866, 897,
  840, 871, 867, 898, 781, 812, 811, 842, 628, 659, 868, 899,
  751, 782, 597, 628, 659, 690, 566, 597, 690, 721, 869, 900,
  841, 872, 535, 566, 721, 752, 812, 843, 870, 901, 782, 813,
  842, 873, 504, 535, 752, 783, 871, 902, 629, 660, 660, 691,
  896, 896, 897, 928, 598, 629, 691, 722, 813, 844, 898, 929,
  872, 903, 783, 814, 843, 874, 899, 930, 567, 598, 722, 753,
  900, 931, 536, 567, 753, 784, 873, 904, 901, 932, 814, 845,
  844, 875, 902, 933, 505, 536, 784, 815, 661, 692, 630, 661,
  692, 723, 874, 905, 599, 630, 723, 754, 903, 934, 845, 876,
  568, 599, 754, 785, 928, 928, 815, 846, 929, 960, 930, 961,
  875, 906, 904, 935, 931, 962, 537, 568, 785, 816, 932, 963,
  905, 936, 662, 693, 693, 724, 846, 877, 933, 964, 876, 907,
  631, 662, 724, 755, 506, 537, 816, 847, 934, 965, 600, 631,
  755, 786, 906, 937, 569, 600, 786, 817, 935, 966, 877, 908,
  847, 878, 960, 960, 907, 938, 961, 992, 936, 967, 538, 569,
  817, 848, 962, 993, 694, 725, 663, 694, 725, 756, 963, 994,
  632, 663, 756, 787, 964, 995, 878, 909, 937, 968, 507, 538,
  848, 879, 908, 939, 601, 632, 787, 818, 965, 996, 966, 997,
  570, 601, 818, 849, 938, 969, 879, 910, 909, 940, 967, 998,
  695, 726, 726, 757, 664, 695, 757, 788, 539, 570, 849, 880,
  939, 970, 633, 664, 788, 819, 968, 999, 602, 633, 819, 850,
  910,  941,  508,  539,  880,  911,  969, 1000,  940,  971,  571,  602,
  850,  881,  727,  758,  696,  727,  758,  789,  970, 1001,  665,  696,
  789, 820, 911, 942, 941, 972, 540, 571, 881, 912, 634, 665,
  820,  851,  971, 1002,  603,  634,  851,  882,  942,  973,  509,  540,
  912,  943,  728,  759,  759,  790,  972, 1003,  572,  603,  882,  913,
  697, 728, 790, 821, 666, 697, 821, 852, 943, 974, 635, 666,
  852,  883,  541,  572,  913,  944,  973, 1004,  604,  635,  883,  914,
  760,  791,  729,  760,  791,  822,  510,  541,  944,  975,  974, 1005,
  698, 729, 822, 853, 573, 604, 914, 945, 667, 698, 853, 884,
  636,  667,  884,  915,  975, 1006,  542,  573,  945,  976,  761,  792,
  792, 823, 605, 636, 915, 946, 730, 761, 823, 854, 699, 730,
  854,  885,  511,  542,  976, 1007,  574,  605,  946,  977,  668,  699,
  885,  916,  637,  668,  916,  947,  543,  574,  793,  824,  977, 1008,
  762, 793, 824, 855, 731, 762, 855, 886, 606, 637, 947, 978,
  700,  731,  886,  917,  669,  700,  917,  948,  575,  606,  978, 1009,
  638, 669, 948, 979, 794, 825, 825, 856, 763, 794, 856, 887,
  732,  763,  887,  918,  607,  638,  979, 1010,  701,  732,  918,  949,
  670, 701, 949, 980, 826, 857, 795, 826, 857, 888, 764, 795,
  888,  919,  639,  670,  980, 1011,  733,  764,  919,  950,  702,  733,
  950,  981,  671,  702,  981, 1012,  827,  858,  858,  889,  796,  827,
  889, 920, 765, 796, 920, 951, 734, 765, 951, 982, 703, 734,
  982, 1013,  859,  890,  828,  859,  890,  921,  797,  828,  921,  952,
  766,  797,  952,  983,  735,  766,  983, 1014,  860,  891,  891,  922,
  829,  860,  922,  953,  798,  829,  953,  984,  767,  798,  984, 1015,
  892, 923, 861, 892, 923, 954, 830, 861, 954, 985, 799, 830,
  985, 1016,  893,  924,  924,  955,  862,  893,  955,  986,  831,  862,
  986, 1017,  925,  956,  894,  925,  956,  987,  863,  894,  987, 1018,
  926,  957,  957,  988,  895,  926,  988, 1019,  958,  989,  927,  958,
  989, 1020,  959,  990,  990, 1021,  991, 1022, 0, 0
};

DECLARE_ALIGNED(16, static const int16_t,
                qtr_scan_32x32_neighbors[1025 * MAX_NEIGHBORS]) = {
  0,  0,  0,  0,  0,  0,  1, 32,  1,  1, 32, 32,
  2, 33, 33, 64, 34, 65,  2,  2, 64, 64,  3, 34,
  65, 96, 35, 66, 66, 97,  3,  3, 96, 96,  4, 35,
  97, 128,  67,  98,  36,  67,  98, 129,   4,   4,  68,  99,
  99, 130, 128, 128,   5,  36, 129, 160,  37,  68, 130, 161,
  100, 131,  69, 100, 131, 162,   5,   5, 160, 160,   6,  37,
  161, 192,  38,  69, 162, 193, 101, 132, 132, 163,  70, 101,
  163, 194,   6,   6, 192, 192,   7,  38, 133, 164, 193, 224,
  102, 133, 164, 195,  39,  70, 194, 225,  71, 102, 195, 226,
  134, 165, 165, 196,   7,   7, 224, 224,   8,  39, 103, 134,
  196, 227, 225, 256,  40,  71, 226, 257, 166, 197,  72, 103,
  227, 258, 135, 166, 197, 228, 104, 135, 228, 259,   8,   8,
  256, 256,   9,  40, 257, 288,  41,  72, 167, 198, 198, 229,
  258, 289, 136, 167, 229, 260,  73, 104, 259, 290, 105, 136,
  260, 291, 199, 230,   9,   9, 168, 199, 230, 261, 288, 288,
  10,  41, 289, 320,  42,  73, 290, 321, 137, 168, 261, 292,
  74, 105, 291, 322, 200, 231, 231, 262, 106, 137, 292, 323,
  169, 200, 262, 293,  10,  10, 320, 320,  11,  42, 321, 352,
  43,  74, 138, 169, 293, 324, 322, 353, 232, 263,  75, 106,
  201, 232, 263, 294, 323, 354, 170, 201, 294, 325, 107, 138,
  324, 355,  11,  11, 352, 352,  12,  43, 233, 264, 264, 295,
  353, 384, 139, 170, 325, 356,  44,  75, 354, 385, 202, 233,
  295, 326,  76, 107, 355, 386, 171, 202, 326, 357, 108, 139,
  356, 387, 265, 296, 234, 265, 296, 327,  12,  12, 140, 171,
  357, 388, 384, 384,  13,  44, 203, 234, 327, 358, 385, 416,
  45,  76, 386, 417,  77, 108, 387, 418, 172, 203, 358, 389,
  266, 297, 297, 328, 109, 140, 235, 266, 328, 359, 388, 419,
  204, 235, 359, 390, 141, 172, 389, 420,  13,  13, 416, 416,
  14,  45, 417, 448,  46,  77, 298, 329, 418, 449, 267, 298,
  329, 360,  78, 109, 173, 204, 390, 421, 419, 450, 236, 267,
  360, 391, 110, 141, 420, 451, 205, 236, 391, 422, 142, 173,
  299, 330, 330, 361, 421, 452,  14,  14, 268, 299, 361, 392,
  448, 448,  15,  46, 449, 480,  47,  78, 450, 481, 174, 205,
  422, 453, 237, 268, 392, 423,  79, 110, 451, 482, 111, 142,
  452, 483, 331, 362, 300, 331, 362, 393, 206, 237, 423, 454,
  143, 174, 269, 300, 393, 424, 453, 484, 238, 269, 424, 455,
  175, 206, 454, 485, 332, 363, 363, 394, 301, 332, 394, 425,
  207, 238, 455, 486, 270, 301, 425, 456, 364, 395, 239, 270,
  456, 487, 333, 364, 395, 426, 302, 333, 426, 457, 271, 302,
  457, 488, 365, 396, 396, 427, 334, 365, 427, 458, 303, 334,
  458, 489, 397, 428, 366, 397, 428, 459, 335, 366, 459, 490,
  398, 429, 429, 460, 367, 398, 460, 491, 430, 461, 399, 430,
  461, 492, 431, 462, 462, 493, 463, 494,  15,  15, 480, 480,
  16,  47, 481, 512,  48,  79, 482, 513,  80, 111, 483, 514,
  112, 143, 484, 515, 144, 175, 485, 516,  16,  16, 512, 512,
  17,  48, 513, 544, 176, 207, 486, 517,  49,  80, 514, 545,
  81, 112, 515, 546, 113, 144, 208, 239, 487, 518, 516, 547,
  145, 176, 517, 548, 240, 271, 488, 519,  17,  17, 544, 544,
  18,  49, 177, 208, 518, 549, 545, 576,  50,  81, 546, 577,
  82, 113, 547, 578, 272, 303, 489, 520, 209, 240, 519, 550,
  114, 145, 548, 579, 146, 177, 549, 580, 241, 272, 520, 551,
  304, 335, 490, 521, 178, 209, 550, 581,  18,  18, 576, 576,
  19,  50, 577, 608,  51,  82, 578, 609,  83, 114, 273, 304,
  521, 552, 579, 610, 210, 241, 551, 582, 115, 146, 336, 367,
  491, 522, 580, 611, 147, 178, 581, 612, 242, 273, 552, 583,
  305, 336, 522, 553, 179, 210, 582, 613,  19,  19, 368, 399,
  492, 523, 608, 608,  20,  51, 609, 640,  52,  83, 610, 641,
  274, 305, 553, 584,  84, 115, 611, 642, 211, 242, 337, 368,
  523, 554, 583, 614, 116, 147, 612, 643, 306, 337, 554, 585,
  148, 179, 243, 274, 400, 431, 493, 524, 584, 615, 613, 644,
  369, 400, 524, 555, 180, 211, 614, 645,  20,  20, 640, 640,
  21,  52, 275, 306, 585, 616, 641, 672,  53,  84, 338, 369,
  555, 586, 642, 673, 212, 243, 615, 646,  85, 116, 643, 674,
  432, 463, 494, 525, 117, 148, 644, 675, 401, 432, 525, 556,
  307, 338, 586, 617, 244, 275, 616, 647, 149, 180, 645, 676,
  370, 401, 556, 587, 181, 212, 646, 677, 276, 307, 464, 495,
  495, 526, 617, 648, 339, 370, 587, 618,  21,  21, 672, 672,
  22,  53, 433, 464, 526, 557, 673, 704,  54,  85, 674, 705,
  213, 244, 647, 678,  86, 117, 402, 433, 557, 588, 675, 706,
  118, 149, 308, 339, 618, 649, 676, 707, 245, 276, 371, 402,
  588, 619, 648, 679, 150, 181, 677, 708, 496, 527, 465, 496,
  527, 558, 182, 213, 434, 465, 558, 589, 678, 709, 340, 371,
  619, 650, 277, 308, 649, 680,  22,  22, 704, 704,  23,  54,
  403, 434, 589, 620, 705, 736,  55,  86, 214, 245, 679, 710,
  706, 737,  87, 118, 707, 738, 309, 340, 650, 681, 372, 403,
  620, 651, 119, 150, 497, 528, 528, 559, 708, 739, 246, 277,
  680, 711, 466, 497, 559, 590, 151, 182, 709, 740, 435, 466,
  590, 621, 341, 372, 651, 682, 183, 214, 278, 309, 681, 712,
  710, 741, 404, 435, 621, 652,  23,  23, 736, 736,  24,  55,
  737, 768, 215, 246, 529, 560, 711, 742,  56,  87, 498, 529,
  560, 591, 738, 769, 310, 341, 682, 713,  88, 119, 373, 404,
  652, 683, 739, 770, 467, 498, 591, 622, 120, 151, 740, 771,
  247, 278, 712, 743, 436, 467, 622, 653, 152, 183, 741, 772,
  342, 373, 683, 714, 279, 310, 405, 436, 653, 684, 713, 744,
  184, 215, 742, 773, 530, 561, 561, 592, 499, 530, 592, 623,
  24,  24, 216, 247, 468, 499, 623, 654, 743, 774, 768, 768,
  25,  56, 769, 800, 374, 405, 684, 715,  57,  88, 311, 342,
  714, 745, 770, 801,  89, 120, 771, 802, 437, 468, 654, 685,
  248, 279, 744, 775, 121, 152, 772, 803, 562, 593, 153, 184,
  343, 374, 531, 562, 593, 624, 715, 746, 773, 804, 406, 437,
  685, 716, 500, 531, 624, 655, 280, 311, 745, 776, 185, 216,
  774, 805, 469, 500, 655, 686, 375, 406, 716, 747, 217, 248,
  775, 806,  25,  25, 312, 343, 746, 777, 800, 800,  26,  57,
  801, 832,  58,  89, 438, 469, 686, 717, 802, 833,  90, 121,
  563, 594, 594, 625, 803, 834, 249, 280, 532, 563, 625, 656,
  776, 807, 122, 153, 804, 835, 344, 375, 501, 532, 656, 687,
  747, 778, 407, 438, 717, 748, 154, 185, 805, 836, 281, 312,
  777, 808, 470, 501, 687, 718, 186, 217, 806, 837, 376, 407,
  748, 779, 595, 626, 564, 595, 626, 657, 218, 249, 313, 344,
  439, 470, 718, 749, 778, 809, 807, 838,  26,  26, 832, 832,
  27,  58, 533, 564, 657, 688, 833, 864,  59,  90, 834, 865,
  91, 122, 835, 866, 250, 281, 502, 533, 688, 719, 808, 839,
  123, 154, 408, 439, 749, 780, 836, 867, 345, 376, 779, 810,
  155, 186, 471, 502, 719, 750, 837, 868, 282, 313, 809, 840,
  596, 627, 627, 658, 187, 218, 565, 596, 658, 689, 838, 869,
  377, 408, 780, 811, 440, 471, 750, 781, 534, 565, 689, 720,
  314, 345, 810, 841, 219, 250, 839, 870,  27,  27, 864, 864,
  28,  59, 503, 534, 720, 751, 865, 896,  60,  91, 866, 897,
  92, 123, 251, 282, 840, 871, 867, 898, 409, 440, 781, 812,
  346, 377, 811, 842, 124, 155, 628, 659, 868, 899, 472, 503,
  751, 782, 597, 628, 659, 690, 566, 597, 690, 721, 156, 187,
  869, 900, 283, 314, 841, 872, 535, 566, 721, 752, 188, 219,
  378, 409, 812, 843, 870, 901, 441, 472, 782, 813, 315, 346,
  842, 873, 504, 535, 752, 783, 220, 251, 871, 902,  28,  28,
  629, 660, 660, 691, 896, 896,  29,  60, 897, 928,  61,  92,
  410, 441, 598, 629, 691, 722, 813, 844, 898, 929, 252, 283,
  872, 903,  93, 124, 347, 378, 473, 504, 783, 814, 843, 874,
  899, 930, 567, 598, 722, 753, 125, 156, 900, 931, 284, 315,
  536, 567, 753, 784, 873, 904, 157, 188, 901, 932, 442, 473,
  814, 845, 379, 410, 844, 875, 189, 220, 902, 933, 505, 536,
  784, 815, 661, 692, 316, 347, 630, 661, 692, 723, 874, 905,
  221, 252, 599, 630, 723, 754, 903, 934, 411, 442, 845, 876,
  29,  29, 568, 599, 754, 785, 928, 928,  30,  61, 474, 505,
  815, 846, 929, 960,  62,  93, 930, 961, 253, 284, 348, 379,
  875, 906, 904, 935,  94, 125, 931, 962, 537, 568, 785, 816,
  126, 157, 932, 963, 285, 316, 905, 936, 158, 189, 443, 474,
  662, 693, 693, 724, 846, 877, 933, 964, 380, 411, 876, 907,
  631, 662, 724, 755, 506, 537, 816, 847, 190, 221, 934, 965,
  600, 631, 755, 786, 317, 348, 906, 937, 222, 253, 569, 600,
  786, 817, 935, 966, 412, 443, 877, 908, 475, 506, 847, 878,
  30,  30, 960, 960,  31,  62, 349, 380, 907, 938, 961, 992,
  254, 285, 936, 967,  63,  94, 538, 569, 817, 848, 962, 993,
  694, 725,  95, 126, 663, 694, 725, 756, 963, 994, 632, 663,
  756, 787, 127, 158, 964, 995, 444, 475, 878, 909, 286, 317,
  937, 968, 381, 412, 507, 538, 848, 879, 908, 939, 159, 190,
  601, 632, 787, 818, 965, 996, 191, 222, 966, 997, 318, 349,
  570, 601, 818, 849, 938, 969, 476, 507, 879, 910, 223, 254,
  413, 444, 909, 940, 967, 998, 695, 726, 726, 757, 664, 695,
  757, 788, 539, 570, 849, 880, 350, 381, 939, 970, 255, 286,
  633, 664, 788, 819, 968, 999, 445, 476, 602, 633, 819, 850,
  910,  941,  508,  539,  880,  911,  287,  318,  969, 1000,  382,  413,
  940, 971, 571, 602, 850, 881, 727, 758, 696, 727, 758, 789,
  319,  350,  970, 1001,  477,  508,  665,  696,  789,  820,  911,  942,
  414, 445, 941, 972, 540, 571, 881, 912, 634, 665, 820, 851,
  351,  382,  971, 1002,  603,  634,  851,  882,  446,  477,  942,  973,
  509,  540,  912,  943,  383,  414,  728,  759,  759,  790,  972, 1003,
  572, 603, 882, 913, 697, 728, 790, 821, 666, 697, 821, 852,
  478, 509, 943, 974, 635, 666, 852, 883, 415, 446, 541, 572,
  913,  944,  973, 1004,  604,  635,  883,  914,  760,  791,  729,  760,
  791,  822,  510,  541,  944,  975,  447,  478,  974, 1005,  698,  729,
  822, 853, 573, 604, 914, 945, 667, 698, 853, 884, 636, 667,
  884,  915,  479,  510,  975, 1006,  542,  573,  945,  976,  761,  792,
  792, 823, 605, 636, 915, 946, 730, 761, 823, 854, 699, 730,
  854,  885,  511,  542,  976, 1007,  574,  605,  946,  977,  668,  699,
  885,  916,  637,  668,  916,  947,  543,  574,  793,  824,  977, 1008,
  762, 793, 824, 855, 731, 762, 855, 886, 606, 637, 947, 978,
  700,  731,  886,  917,  669,  700,  917,  948,  575,  606,  978, 1009,
  638, 669, 948, 979, 794, 825, 825, 856, 763, 794, 856, 887,
  732,  763,  887,  918,  607,  638,  979, 1010,  701,  732,  918,  949,
  670, 701, 949, 980, 826, 857, 795, 826, 857, 888, 764, 795,
  888,  919,  639,  670,  980, 1011,  733,  764,  919,  950,  702,  733,
  950,  981,  671,  702,  981, 1012,  827,  858,  858,  889,  796,  827,
  889, 920, 765, 796, 920, 951, 734, 765, 951, 982, 703, 734,
  982, 1013,  859,  890,  828,  859,  890,  921,  797,  828,  921,  952,
  766,  797,  952,  983,  735,  766,  983, 1014,  860,  891,  891,  922,
  829,  860,  922,  953,  798,  829,  953,  984,  767,  798,  984, 1015,
  892, 923, 861, 892, 923, 954, 830, 861, 954, 985, 799, 830,
  985, 1016,  893,  924,  924,  955,  862,  893,  955,  986,  831,  862,
  986, 1017,  925,  956,  894,  925,  956,  987,  863,  894,  987, 1018,
  926,  957,  957,  988,  895,  926,  988, 1019,  958,  989,  927,  958,
  989, 1020,  959,  990,  990, 1021,  991, 1022, 0, 0
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t, vp10_default_iscan_4x4[16]) = {
  0, 2, 5, 8, 1, 3, 9, 12, 4, 7, 11, 14, 6, 10, 13, 15,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t, vp10_mcol_iscan_4x4[16]) = {
  0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_mrow_iscan_4x4[16]) = {
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t, vp10_col_iscan_4x4[16]) = {
  0, 3, 7, 11, 1, 5, 9, 12, 2, 6, 10, 14, 4, 8, 13, 15,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_row_iscan_4x4[16]) = {
  0, 1, 3, 5, 2, 4, 6, 9, 7, 8, 11, 13, 10, 12, 14, 15,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t, vp10_mcol_iscan_8x8[64]) = {
  0, 8, 16, 24, 32, 40, 48, 56, 1, 9, 17, 25, 33, 41, 49, 57, 2, 10,
  18, 26, 34, 42, 50, 58, 3, 11, 19, 27, 35, 43, 51, 59, 4, 12, 20,
  28, 36, 44, 52, 60, 5, 13, 21, 29, 37, 45, 53, 61, 6, 14, 22, 30,
  38, 46, 54, 62, 7, 15, 23, 31, 39, 47, 55, 63,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_mrow_iscan_8x8[64]) = {
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
  20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
  37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,
  54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t, vp10_col_iscan_8x8[64]) = {
  0, 3, 8, 15, 22, 32, 40, 47, 1, 5, 11, 18, 26, 34, 44, 51,
  2, 7, 13, 20, 28, 38, 46, 54, 4, 10, 16, 24, 31, 41, 50, 56,
  6, 12, 21, 27, 35, 43, 52, 58, 9, 17, 25, 33, 39, 48, 55, 60,
  14, 23, 30, 37, 45, 53, 59, 62, 19, 29, 36, 42, 49, 57, 61, 63,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_row_iscan_8x8[64]) = {
  0, 1, 2, 5, 8, 12, 19, 24, 3, 4, 7, 10, 15, 20, 30, 39,
  6, 9, 13, 16, 21, 27, 37, 46, 11, 14, 17, 23, 28, 34, 44, 52,
  18, 22, 25, 31, 35, 41, 50, 57, 26, 29, 33, 38, 43, 49, 55, 59,
  32, 36, 42, 47, 51, 54, 60, 61, 40, 45, 48, 53, 56, 58, 62, 63,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_default_iscan_8x8[64]) = {
  0, 2, 5, 9, 14, 22, 31, 37, 1, 4, 8, 13, 19, 26, 38, 44,
  3, 6, 10, 17, 24, 30, 42, 49, 7, 11, 15, 21, 29, 36, 47, 53,
  12, 16, 20, 27, 34, 43, 52, 57, 18, 23, 28, 35, 41, 48, 56, 60,
  25, 32, 39, 45, 50, 55, 59, 62, 33, 40, 46, 51, 54, 58, 61, 63,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t, vp10_mcol_iscan_16x16[256]) = {
  0, 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224, 240,
  1, 17, 33, 49, 65, 81, 97, 113, 129, 145, 161, 177, 193, 209, 225, 241,
  2, 18, 34, 50, 66, 82, 98, 114, 130, 146, 162, 178, 194, 210, 226, 242,
  3, 19, 35, 51, 67, 83, 99, 115, 131, 147, 163, 179, 195, 211, 227, 243,
  4, 20, 36, 52, 68, 84, 100, 116, 132, 148, 164, 180, 196, 212, 228, 244,
  5, 21, 37, 53, 69, 85, 101, 117, 133, 149, 165, 181, 197, 213, 229, 245,
  6, 22, 38, 54, 70, 86, 102, 118, 134, 150, 166, 182, 198, 214, 230, 246,
  7, 23, 39, 55, 71, 87, 103, 119, 135, 151, 167, 183, 199, 215, 231, 247,
  8, 24, 40, 56, 72, 88, 104, 120, 136, 152, 168, 184, 200, 216, 232, 248,
  9, 25, 41, 57, 73, 89, 105, 121, 137, 153, 169, 185, 201, 217, 233, 249,
  10, 26, 42, 58, 74, 90, 106, 122, 138, 154, 170, 186, 202, 218, 234, 250,
  11, 27, 43, 59, 75, 91, 107, 123, 139, 155, 171, 187, 203, 219, 235, 251,
  12, 28, 44, 60, 76, 92, 108, 124, 140, 156, 172, 188, 204, 220, 236, 252,
  13, 29, 45, 61, 77, 93, 109, 125, 141, 157, 173, 189, 205, 221, 237, 253,
  14, 30, 46, 62, 78, 94, 110, 126, 142, 158, 174, 190, 206, 222, 238, 254,
  15, 31, 47, 63, 79, 95, 111, 127, 143, 159, 175, 191, 207, 223, 239, 255,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_mrow_iscan_16x16[256]) = {
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
  16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
  32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
  48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
  64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
  80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
  96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
  112, 113, 114, 115, 116, 117, 118, 119,
  120, 121, 122, 123, 124, 125, 126, 127,
  128, 129, 130, 131, 132, 133, 134, 135,
  136, 137, 138, 139, 140, 141, 142, 143,
  144, 145, 146, 147, 148, 149, 150, 151,
  152, 153, 154, 155, 156, 157, 158, 159,
  160, 161, 162, 163, 164, 165, 166, 167,
  168, 169, 170, 171, 172, 173, 174, 175,
  176, 177, 178, 179, 180, 181, 182, 183,
  184, 185, 186, 187, 188, 189, 190, 191,
  192, 193, 194, 195, 196, 197, 198, 199,
  200, 201, 202, 203, 204, 205, 206, 207,
  208, 209, 210, 211, 212, 213, 214, 215,
  216, 217, 218, 219, 220, 221, 222, 223,
  224, 225, 226, 227, 228, 229, 230, 231,
  232, 233, 234, 235, 236, 237, 238, 239,
  240, 241, 242, 243, 244, 245, 246, 247,
  248, 249, 250, 251, 252, 253, 254, 255,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t, vp10_col_iscan_16x16[256]) = {
  0, 4, 11, 20, 31, 43, 59, 75, 85, 109, 130, 150, 165, 181, 195, 198,
  1, 6, 14, 23, 34, 47, 64, 81, 95, 114, 135, 153, 171, 188, 201, 212,
  2, 8, 16, 25, 38, 52, 67, 83, 101, 116, 136, 157, 172, 190, 205, 216,
  3, 10, 18, 29, 41, 55, 71, 89, 103, 119, 141, 159, 176, 194, 208, 218,
  5, 12, 21, 32, 45, 58, 74, 93, 104, 123, 144, 164, 179, 196, 210, 223,
  7, 15, 26, 37, 49, 63, 78, 96, 112, 129, 146, 166, 182, 200, 215, 228,
  9, 19, 28, 39, 54, 69, 86, 102, 117, 132, 151, 170, 187, 206, 220, 230,
  13, 24, 35, 46, 60, 73, 91, 108, 122, 137, 154, 174, 189, 207, 224, 235,
  17, 30, 40, 53, 66, 82, 98, 115, 126, 142, 161, 180, 197, 213, 227, 237,
  22, 36, 48, 62, 76, 92, 105, 120, 133, 147, 167, 186, 203, 219, 232, 240,
  27, 44, 56, 70, 84, 99, 113, 127, 140, 156, 175, 193, 209, 226, 236, 244,
  33, 51, 68, 79, 94, 110, 125, 138, 149, 162, 184, 202, 217, 229, 241, 247,
  42, 61, 77, 90, 106, 121, 134, 148, 160, 173, 191, 211, 225, 238, 245, 251,
  50, 72, 87, 100, 118, 128, 145, 158, 168, 183, 204, 222, 233, 242, 249, 253,
  57, 80, 97, 111, 131, 143, 155, 169, 178, 192, 214, 231, 239, 246, 250, 254,
  65, 88, 107, 124, 139, 152, 163, 177, 185, 199, 221, 234, 243, 248, 252, 255,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_row_iscan_16x16[256]) = {
  0, 1, 2, 4, 6, 9, 12, 17, 22, 29, 36, 43, 54, 64, 76, 86,
  3, 5, 7, 11, 15, 19, 25, 32, 38, 48, 59, 68, 84, 99, 115, 130,
  8, 10, 13, 18, 23, 27, 33, 42, 51, 60, 72, 88, 103, 119, 142, 167,
  14, 16, 20, 26, 31, 37, 44, 53, 61, 73, 85, 100, 116, 135, 161, 185,
  21, 24, 30, 35, 40, 47, 55, 65, 74, 81, 94, 112, 133, 154, 179, 205,
  28, 34, 39, 45, 50, 58, 67, 77, 87, 96, 106, 121, 146, 169, 196, 212,
  41, 46, 49, 56, 63, 70, 79, 90, 98, 107, 122, 138, 159, 182, 207, 222,
  52, 57, 62, 69, 75, 83, 93, 102, 110, 120, 134, 150, 176, 195, 215, 226,
  66, 71, 78, 82, 91, 97, 108, 113, 127, 136, 148, 168, 188, 202, 221, 232,
  80, 89, 92, 101, 105, 114, 125, 131, 139, 151, 162, 177, 192, 208, 223, 234,
  95, 104, 109, 117, 123, 128, 143, 144, 155, 165, 175, 190, 206, 219, 233, 239,
  111, 118, 124, 129, 140, 147, 157, 164, 170, 181, 191, 203, 224, 230, 240,
  243, 126, 132, 137, 145, 153, 160, 174, 178, 184, 197, 204, 216, 231, 237,
  244, 246, 141, 149, 156, 166, 172, 180, 189, 199, 200, 210, 220, 228, 238,
  242, 249, 251, 152, 163, 171, 183, 186, 193, 201, 211, 214, 218, 227, 236,
  245, 247, 252, 253, 158, 173, 187, 194, 198, 209, 213, 217, 225, 229, 235,
  241, 248, 250, 254, 255,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_default_iscan_16x16[256]) = {
  0, 2, 5, 9, 17, 24, 36, 44, 55, 72, 88, 104, 128, 143, 166, 179,
  1, 4, 8, 13, 20, 30, 40, 54, 66, 79, 96, 113, 141, 154, 178, 196,
  3, 7, 11, 18, 25, 33, 46, 57, 71, 86, 101, 119, 148, 164, 186, 201,
  6, 12, 16, 23, 31, 39, 53, 64, 78, 92, 110, 127, 153, 169, 193, 208,
  10, 14, 19, 28, 37, 47, 58, 67, 84, 98, 114, 133, 161, 176, 198, 214,
  15, 21, 26, 34, 43, 52, 65, 77, 91, 106, 120, 140, 165, 185, 205, 221,
  22, 27, 32, 41, 48, 60, 73, 85, 99, 116, 130, 151, 175, 190, 211, 225,
  29, 35, 42, 49, 59, 69, 81, 95, 108, 125, 139, 155, 182, 197, 217, 229,
  38, 45, 51, 61, 68, 80, 93, 105, 118, 134, 150, 168, 191, 207, 223, 234,
  50, 56, 63, 74, 83, 94, 109, 117, 129, 147, 163, 177, 199, 213, 228, 238,
  62, 70, 76, 87, 97, 107, 122, 131, 145, 159, 172, 188, 210, 222, 235, 242,
  75, 82, 90, 102, 112, 124, 138, 146, 157, 173, 187, 202, 219, 230, 240, 245,
  89, 100, 111, 123, 132, 142, 156, 167, 180, 189, 203, 216, 231, 237, 246, 250,
  103, 115, 126, 136, 149, 162, 171, 183, 194, 204, 215, 224, 236, 241, 248,
  252, 121, 135, 144, 158, 170, 181, 192, 200, 209, 218, 227, 233, 243, 244,
  251, 254, 137, 152, 160, 174, 184, 195, 206, 212, 220, 226, 232, 239, 247,
  249, 253, 255,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t, vp10_mcol_iscan_32x32[1024]) = {
  0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416,
  448, 480, 512, 544, 576, 608, 640, 672, 704, 736, 768, 800, 832,
  864, 896, 928, 960, 992,
  1, 33, 65, 97, 129, 161, 193, 225, 257, 289, 321, 353, 385, 417,
  449, 481, 513, 545, 577, 609, 641, 673, 705, 737, 769, 801, 833,
  865, 897, 929, 961, 993,
  2, 34, 66, 98, 130, 162, 194, 226, 258, 290, 322, 354, 386, 418,
  450, 482, 514, 546, 578, 610, 642, 674, 706, 738, 770, 802, 834,
  866, 898, 930, 962, 994,
  3, 35, 67, 99, 131, 163, 195, 227, 259, 291, 323, 355, 387, 419,
  451, 483, 515, 547, 579, 611, 643, 675, 707, 739, 771, 803, 835,
  867, 899, 931, 963, 995,
  4, 36, 68, 100, 132, 164, 196, 228, 260, 292, 324, 356, 388, 420,
  452, 484, 516, 548, 580, 612, 644, 676, 708, 740, 772, 804, 836,
  868, 900, 932, 964, 996,
  5, 37, 69, 101, 133, 165, 197, 229, 261, 293, 325, 357, 389, 421,
  453, 485, 517, 549, 581, 613, 645, 677, 709, 741, 773, 805, 837,
  869, 901, 933, 965, 997,
  6, 38, 70, 102, 134, 166, 198, 230, 262, 294, 326, 358, 390, 422,
  454, 486, 518, 550, 582, 614, 646, 678, 710, 742, 774, 806, 838,
  870, 902, 934, 966, 998,
  7, 39, 71, 103, 135, 167, 199, 231, 263, 295, 327, 359, 391, 423,
  455, 487, 519, 551, 583, 615, 647, 679, 711, 743, 775, 807, 839,
  871, 903, 935, 967, 999,
  8, 40, 72, 104, 136, 168, 200, 232, 264, 296, 328, 360, 392, 424,
  456, 488, 520, 552, 584, 616, 648, 680, 712, 744, 776, 808, 840,
  872, 904, 936, 968, 1000,
  9, 41, 73, 105, 137, 169, 201, 233, 265, 297, 329, 361, 393, 425,
  457, 489, 521, 553, 585, 617, 649, 681, 713, 745, 777, 809, 841,
  873, 905, 937, 969, 1001,
  10, 42, 74, 106, 138, 170, 202, 234, 266, 298, 330, 362, 394,
  426, 458, 490, 522, 554, 586, 618, 650, 682, 714, 746, 778, 810,
  842, 874, 906, 938, 970, 1002,
  11, 43, 75, 107, 139, 171, 203, 235, 267, 299, 331, 363, 395,
  427, 459, 491, 523, 555, 587, 619, 651, 683, 715, 747, 779, 811,
  843, 875, 907, 939, 971, 1003,
  12, 44, 76, 108, 140, 172, 204, 236, 268, 300, 332, 364, 396,
  428, 460, 492, 524, 556, 588, 620, 652, 684, 716, 748, 780,
  812, 844, 876, 908, 940, 972, 1004,
  13, 45, 77, 109, 141, 173, 205, 237, 269, 301, 333, 365, 397,
  429, 461, 493, 525, 557, 589, 621, 653, 685, 717, 749, 781,
  813, 845, 877, 909, 941, 973, 1005,
  14, 46, 78, 110, 142, 174, 206, 238, 270, 302, 334, 366, 398,
  430, 462, 494, 526, 558, 590, 622, 654, 686, 718, 750, 782,
  814, 846, 878, 910, 942, 974, 1006,
  15, 47, 79, 111, 143, 175, 207, 239, 271, 303, 335, 367, 399,
  431, 463, 495, 527, 559, 591, 623, 655, 687, 719, 751, 783,
  815, 847, 879, 911, 943, 975, 1007,
  16, 48, 80, 112, 144, 176, 208, 240, 272, 304, 336, 368, 400,
  432, 464, 496, 528, 560, 592, 624, 656, 688, 720, 752, 784,
  816, 848, 880, 912, 944, 976, 1008,
  17, 49, 81, 113, 145, 177, 209, 241, 273, 305, 337, 369, 401,
  433, 465, 497, 529, 561, 593, 625, 657, 689, 721, 753, 785,
  817, 849, 881, 913, 945, 977, 1009,
  18, 50, 82, 114, 146, 178, 210, 242, 274, 306, 338, 370, 402,
  434, 466, 498, 530, 562, 594, 626, 658, 690, 722, 754, 786,
  818, 850, 882, 914, 946, 978, 1010,
  19, 51, 83, 115, 147, 179, 211, 243, 275, 307, 339, 371, 403,
  435, 467, 499, 531, 563, 595, 627, 659, 691, 723, 755, 787,
  819, 851, 883, 915, 947, 979, 1011,
  20, 52, 84, 116, 148, 180, 212, 244, 276, 308, 340, 372, 404,
  436, 468, 500, 532, 564, 596, 628, 660, 692, 724, 756, 788,
  820, 852, 884, 916, 948, 980, 1012,
  21, 53, 85, 117, 149, 181, 213, 245, 277, 309, 341, 373, 405,
  437, 469, 501, 533, 565, 597, 629, 661, 693, 725, 757, 789,
  821, 853, 885, 917, 949, 981, 1013,
  22, 54, 86, 118, 150, 182, 214, 246, 278, 310, 342, 374, 406,
  438, 470, 502, 534, 566, 598, 630, 662, 694, 726, 758, 790,
  822, 854, 886, 918, 950, 982, 1014,
  23, 55, 87, 119, 151, 183, 215, 247, 279, 311, 343, 375, 407,
  439, 471, 503, 535, 567, 599, 631, 663, 695, 727, 759, 791,
  823, 855, 887, 919, 951, 983, 1015,
  24, 56, 88, 120, 152, 184, 216, 248, 280, 312, 344, 376, 408,
  440, 472, 504, 536, 568, 600, 632, 664, 696, 728, 760, 792,
  824, 856, 888, 920, 952, 984, 1016,
  25, 57, 89, 121, 153, 185, 217, 249, 281, 313, 345, 377, 409,
  441, 473, 505, 537, 569, 601, 633, 665, 697, 729, 761, 793,
  825, 857, 889, 921, 953, 985, 1017,
  26, 58, 90, 122, 154, 186, 218, 250, 282, 314, 346, 378, 410,
  442, 474, 506, 538, 570, 602, 634, 666, 698, 730, 762, 794,
  826, 858, 890, 922, 954, 986, 1018,
  27, 59, 91, 123, 155, 187, 219, 251, 283, 315, 347, 379, 411,
  443, 475, 507, 539, 571, 603, 635, 667, 699, 731, 763, 795,
  827, 859, 891, 923, 955, 987, 1019,
  28, 60, 92, 124, 156, 188, 220, 252, 284, 316, 348, 380, 412,
  444, 476, 508, 540, 572, 604, 636, 668, 700, 732, 764, 796,
  828, 860, 892, 924, 956, 988, 1020,
  29, 61, 93, 125, 157, 189, 221, 253, 285, 317, 349, 381, 413,
  445, 477, 509, 541, 573, 605, 637, 669, 701, 733, 765, 797,
  829, 861, 893, 925, 957, 989, 1021,
  30, 62, 94, 126, 158, 190, 222, 254, 286, 318, 350, 382, 414,
  446, 478, 510, 542, 574, 606, 638, 670, 702, 734, 766, 798,
  830, 862, 894, 926, 958, 990, 1022,
  31, 63, 95, 127, 159, 191, 223, 255, 287, 319, 351, 383, 415,
  447, 479, 511, 543, 575, 607, 639, 671, 703, 735, 767, 799,
  831, 863, 895, 927, 959, 991, 1023,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_mrow_iscan_32x32[1024]) = {
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
  17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
  32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45,
  46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
  60, 61, 62, 63,
  64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77,
  78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
  92, 93, 94, 95,
  96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
  108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118,
  119, 120, 121, 122, 123, 124, 125, 126, 127,
  128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138,
  139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149,
  150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
  160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170,
  171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181,
  182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
  192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202,
  203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213,
  214, 215, 216, 217, 218, 219, 220, 221, 222, 223,
  224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234,
  235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245,
  246, 247, 248, 249, 250, 251, 252, 253, 254, 255,
  256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266,
  267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277,
  278, 279, 280, 281, 282, 283, 284, 285, 286, 287,
  288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298,
  299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309,
  310, 311, 312, 313, 314, 315, 316, 317, 318, 319,
  320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330,
  331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341,
  342, 343, 344, 345, 346, 347, 348, 349, 350, 351,
  352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362,
  363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373,
  374, 375, 376, 377, 378, 379, 380, 381, 382, 383,
  384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394,
  395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405,
  406, 407, 408, 409, 410, 411, 412, 413, 414, 415,
  416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426,
  427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437,
  438, 439, 440, 441, 442, 443, 444, 445, 446, 447,
  448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458,
  459, 460, 461, 462, 463, 464, 465, 466, 467, 468, 469,
  470, 471, 472, 473, 474, 475, 476, 477, 478, 479,
  480, 481, 482, 483, 484, 485, 486, 487, 488, 489, 490,
  491, 492, 493, 494, 495, 496, 497, 498, 499, 500, 501,
  502, 503, 504, 505, 506, 507, 508, 509, 510, 511,
  512, 513, 514, 515, 516, 517, 518, 519, 520, 521, 522,
  523, 524, 525, 526, 527, 528, 529, 530, 531, 532, 533,
  534, 535, 536, 537, 538, 539, 540, 541, 542, 543,
  544, 545, 546, 547, 548, 549, 550, 551, 552, 553, 554,
  555, 556, 557, 558, 559, 560, 561, 562, 563, 564, 565,
  566, 567, 568, 569, 570, 571, 572, 573, 574, 575,
  576, 577, 578, 579, 580, 581, 582, 583, 584, 585, 586,
  587, 588, 589, 590, 591, 592, 593, 594, 595, 596, 597,
  598, 599, 600, 601, 602, 603, 604, 605, 606, 607,
  608, 609, 610, 611, 612, 613, 614, 615, 616, 617, 618,
  619, 620, 621, 622, 623, 624, 625, 626, 627, 628, 629,
  630, 631, 632, 633, 634, 635, 636, 637, 638, 639,
  640, 641, 642, 643, 644, 645, 646, 647, 648, 649, 650,
  651, 652, 653, 654, 655, 656, 657, 658, 659, 660, 661,
  662, 663, 664, 665, 666, 667, 668, 669, 670, 671,
  672, 673, 674, 675, 676, 677, 678, 679, 680, 681, 682,
  683, 684, 685, 686, 687, 688, 689, 690, 691, 692, 693,
  694, 695, 696, 697, 698, 699, 700, 701, 702, 703,
  704, 705, 706, 707, 708, 709, 710, 711, 712, 713, 714,
  715, 716, 717, 718, 719, 720, 721, 722, 723, 724, 725,
  726, 727, 728, 729, 730, 731, 732, 733, 734, 735,
  736, 737, 738, 739, 740, 741, 742, 743, 744, 745, 746,
  747, 748, 749, 750, 751, 752, 753, 754, 755, 756, 757,
  758, 759, 760, 761, 762, 763, 764, 765, 766, 767,
  768, 769, 770, 771, 772, 773, 774, 775, 776, 777, 778,
  779, 780, 781, 782, 783, 784, 785, 786, 787, 788, 789,
  790, 791, 792, 793, 794, 795, 796, 797, 798, 799,
  800, 801, 802, 803, 804, 805, 806, 807, 808, 809, 810,
  811, 812, 813, 814, 815, 816, 817, 818, 819, 820, 821,
  822, 823, 824, 825, 826, 827, 828, 829, 830, 831,
  832, 833, 834, 835, 836, 837, 838, 839, 840, 841, 842,
  843, 844, 845, 846, 847, 848, 849, 850, 851, 852, 853,
  854, 855, 856, 857, 858, 859, 860, 861, 862, 863,
  864, 865, 866, 867, 868, 869, 870, 871, 872, 873, 874,
  875, 876, 877, 878, 879, 880, 881, 882, 883, 884, 885,
  886, 887, 888, 889, 890, 891, 892, 893, 894, 895,
  896, 897, 898, 899, 900, 901, 902, 903, 904, 905, 906,
  907, 908, 909, 910, 911, 912, 913, 914, 915, 916, 917,
  918, 919, 920, 921, 922, 923, 924, 925, 926, 927,
  928, 929, 930, 931, 932, 933, 934, 935, 936, 937, 938,
  939, 940, 941, 942, 943, 944, 945, 946, 947, 948, 949,
  950, 951, 952, 953, 954, 955, 956, 957, 958, 959,
  960, 961, 962, 963, 964, 965, 966, 967, 968, 969, 970,
  971, 972, 973, 974, 975, 976, 977, 978, 979, 980, 981,
  982, 983, 984, 985, 986, 987, 988, 989, 990, 991,
  992, 993, 994, 995, 996, 997, 998, 999, 1000, 1001,
  1002, 1003, 1004, 1005, 1006, 1007, 1008, 1009, 1010,
  1011, 1012, 1013, 1014, 1015, 1016, 1017, 1018, 1019,
  1020, 1021, 1022, 1023,
};
#endif  // CONFIG_EXT_TX

DECLARE_ALIGNED(16, static const int16_t, vp10_default_iscan_32x32[1024]) = {
  0, 2, 5, 10, 17, 25, 38, 47, 62, 83, 101, 121, 145, 170, 193, 204,
  210, 219, 229, 233, 245, 257, 275, 299, 342, 356, 377, 405, 455, 471, 495,
  527, 1, 4, 8, 15, 22, 30, 45, 58, 74, 92, 112, 133, 158, 184, 203, 215, 222,
  228, 234, 237, 256, 274, 298, 317, 355, 376, 404, 426, 470, 494, 526, 551,
  3, 7, 12, 18, 28, 36, 52, 64, 82, 102, 118, 142, 164, 189, 208, 217, 224,
  231, 235, 238, 273, 297, 316, 329, 375, 403, 425, 440, 493, 525, 550, 567,
  6, 11, 16, 23, 31, 43, 60, 73, 90, 109, 126, 150, 173, 196, 211, 220, 226,
  232, 236, 239, 296, 315, 328, 335, 402, 424, 439, 447, 524, 549, 566, 575,
  9, 14, 19, 29, 37, 50, 65, 78, 95, 116, 134, 157, 179, 201, 214, 223, 244,
  255, 272, 295, 341, 354, 374, 401, 454, 469, 492, 523, 582, 596, 617, 645,
  13, 20, 26, 35, 44, 54, 72, 85, 105, 123, 140, 163, 182, 205, 216, 225,
  254, 271, 294, 314, 353, 373, 400, 423, 468, 491, 522, 548, 595, 616, 644,
  666, 21, 27, 33, 42, 53, 63, 80, 94, 113, 132, 151, 172, 190, 209, 218, 227,
  270, 293, 313, 327, 372, 399, 422, 438, 490, 521, 547, 565, 615, 643, 665,
  680, 24, 32, 39, 48, 57, 71, 88, 104, 120, 139, 159, 178, 197, 212, 221, 230,
  292, 312, 326, 334, 398, 421, 437, 446, 520, 546, 564, 574, 642, 664, 679,
  687, 34, 40, 46, 56, 68, 81, 96, 111, 130, 147, 167, 186, 243, 253, 269, 291,
  340, 352, 371, 397, 453, 467, 489, 519, 581, 594, 614, 641, 693, 705, 723,
  747, 41, 49, 55, 67, 77, 91, 107, 124, 138, 161, 177, 194, 252, 268, 290,
  311, 351, 370, 396, 420, 466, 488, 518, 545, 593, 613, 640, 663, 704, 722,
  746, 765, 51, 59, 66, 76, 89, 99, 119, 131, 149, 168, 181, 200, 267, 289,
  310, 325, 369, 395, 419, 436, 487, 517, 544, 563, 612, 639, 662, 678, 721,
  745, 764, 777, 61, 69, 75, 87, 100, 114, 129, 144, 162, 180, 191, 207, 288,
  309, 324, 333, 394, 418, 435, 445, 516, 543, 562, 573, 638, 661, 677, 686,
  744, 763, 776, 783, 70, 79, 86, 97, 108, 122, 137, 155, 242, 251, 266, 287,
  339, 350, 368, 393, 452, 465, 486, 515, 580, 592, 611, 637, 692, 703, 720,
  743, 788, 798, 813, 833, 84, 93, 103, 110, 125, 141, 154, 171, 250, 265, 286,
  308, 349, 367, 392, 417, 464, 485, 514, 542, 591, 610, 636, 660, 702, 719,
  742, 762, 797, 812, 832, 848, 98, 106, 115, 127, 143, 156, 169, 185, 264,
  285, 307, 323, 366, 391, 416, 434, 484, 513, 541, 561, 609, 635, 659, 676,
  718, 741, 761, 775, 811, 831, 847, 858, 117, 128, 136, 148, 160, 175, 188,
  198, 284, 306, 322, 332, 390, 415, 433, 444, 512, 540, 560, 572, 634, 658,
  675, 685, 740, 760, 774, 782, 830, 846, 857, 863, 135, 146, 152, 165, 241,
  249, 263, 283, 338, 348, 365, 389, 451, 463, 483, 511, 579, 590, 608, 633,
  691, 701, 717, 739, 787, 796, 810, 829, 867, 875, 887, 903, 153, 166, 174,
  183, 248, 262, 282, 305, 347, 364, 388, 414, 462, 482, 510, 539, 589, 607,
  632, 657, 700, 716, 738, 759, 795, 809, 828, 845, 874, 886, 902, 915, 176,
  187, 195, 202, 261, 281, 304, 321, 363, 387, 413, 432, 481, 509, 538, 559,
  606, 631, 656, 674, 715, 737, 758, 773, 808, 827, 844, 856, 885, 901, 914,
  923, 192, 199, 206, 213, 280, 303, 320, 331, 386, 412, 431, 443, 508, 537,
  558, 571, 630, 655, 673, 684, 736, 757, 772, 781, 826, 843, 855, 862, 900,
  913, 922, 927, 240, 247, 260, 279, 337, 346, 362, 385, 450, 461, 480, 507,
  578, 588, 605, 629, 690, 699, 714, 735, 786, 794, 807, 825, 866, 873, 884,
  899, 930, 936, 945, 957, 246, 259, 278, 302, 345, 361, 384, 411, 460, 479,
  506, 536, 587, 604, 628, 654, 698, 713, 734, 756, 793, 806, 824, 842, 872,
  883, 898, 912, 935, 944, 956, 966, 258, 277, 301, 319, 360, 383, 410, 430,
  478, 505, 535, 557, 603, 627, 653, 672, 712, 733, 755, 771, 805, 823, 841,
  854, 882, 897, 911, 921, 943, 955, 965, 972, 276, 300, 318, 330, 382, 409,
  429, 442, 504, 534, 556, 570, 626, 652, 671, 683, 732, 754, 770, 780, 822,
  840, 853, 861, 896, 910, 920, 926, 954, 964, 971, 975, 336, 344, 359, 381,
  449, 459, 477, 503, 577, 586, 602, 625, 689, 697, 711, 731, 785, 792, 804,
  821, 865, 871, 881, 895, 929, 934, 942, 953, 977, 981, 987, 995, 343, 358,
  380, 408, 458, 476, 502, 533, 585, 601, 624, 651, 696, 710, 730, 753, 791,
  803, 820, 839, 870, 880, 894, 909, 933, 941, 952, 963, 980, 986, 994, 1001,
  357, 379, 407, 428, 475, 501, 532, 555, 600, 623, 650, 670, 709, 729, 752,
  769, 802, 819, 838, 852, 879, 893, 908, 919, 940, 951, 962, 970, 985, 993,
  1000, 1005, 378, 406, 427, 441, 500, 531, 554, 569, 622, 649, 669, 682, 728,
  751, 768, 779, 818, 837, 851, 860, 892, 907, 918, 925, 950, 961, 969, 974,
  992, 999, 1004, 1007, 448, 457, 474, 499, 576, 584, 599, 621, 688, 695, 708,
  727, 784, 790, 801, 817, 864, 869, 878, 891, 928, 932, 939, 949, 976, 979,
  984, 991, 1008, 1010, 1013, 1017, 456, 473, 498, 530, 583, 598, 620, 648,
  694, 707, 726, 750, 789, 800, 816, 836, 868, 877, 890, 906, 931, 938, 948,
  960, 978, 983, 990, 998, 1009, 1012, 1016, 1020, 472, 497, 529, 553, 597,
  619, 647, 668, 706, 725, 749, 767, 799, 815, 835, 850, 876, 889, 905, 917,
  937, 947, 959, 968, 982, 989, 997, 1003, 1011, 1015, 1019, 1022, 496, 528,
  552, 568, 618, 646, 667, 681, 724, 748, 766, 778, 814, 834, 849, 859, 888,
  904, 916, 924, 946, 958, 967, 973, 988, 996, 1002, 1006, 1014, 1018, 1021,
  1023,
};

#if CONFIG_EXT_TX
DECLARE_ALIGNED(16, static const int16_t, vp10_v2_iscan_32x32[1024]) = {
  0,   1,   4,   9,  15,  22,  33,  43,  56,  71,  86, 104,
  121, 142, 166, 189, 512, 518, 527, 539, 551, 566, 584, 602,
  621, 644, 668, 695, 721, 748, 780, 811,   2,   3,   6,  11,
  17,  26,  35,  45,  58,  73,  90, 106, 123, 146, 168, 193,
  513, 519, 528, 540, 553, 567, 585, 603, 622, 647, 670, 696,
  722, 751, 783, 812,   5,   7,   8,  13,  20,  28,  37,  50,
  62,  75,  92, 108, 129, 150, 170, 195, 514, 521, 530, 541,
  554, 569, 587, 605, 625, 649, 671, 699, 725, 752, 785, 815,
  10,  12,  14,  19,  23,  31,  41,  52,  65,  81,  96, 113,
  133, 152, 175, 201, 515, 522, 531, 542, 556, 572, 589, 607,
  629, 651, 673, 700, 726, 757, 788, 819,  16,  18,  21,  24,
  30,  39,  48,  59,  69,  83, 100, 119, 137, 158, 181, 203,
  516, 523, 534, 545, 559, 574, 591, 610, 632, 654, 679, 704,
  730, 762, 791, 824,  25,  27,  29,  32,  40,  46,  54,  67,
  79,  94, 109, 127, 143, 164, 185, 210, 517, 525, 535, 547,
  561, 578, 595, 615, 635, 656, 684, 707, 737, 766, 793, 830,
  34,  36,  38,  42,  49,  55,  64,  76,  87, 102, 117, 135,
  154, 176, 197, 219, 520, 529, 538, 550, 565, 580, 598, 618,
  639, 664, 687, 712, 741, 769, 802, 833,  44,  47,  51,  53,
  60,  68,  77,  85,  98, 114, 131, 147, 162, 183, 208, 227,
  524, 533, 544, 557, 571, 588, 606, 623, 645, 667, 692, 720,
  747, 776, 806, 838,  57,  61,  63,  66,  70,  80,  88,  99,
  112, 124, 140, 159, 179, 199, 216, 233, 526, 536, 548, 562,
  577, 593, 613, 633, 653, 676, 701, 727, 756, 786, 814, 847,
  72,  74,  78,  82,  84,  95, 103, 115, 125, 139, 156, 173,
  190, 211, 229, 246, 532, 543, 555, 568, 581, 601, 619, 637,
  663, 685, 709, 738, 763, 792, 826, 855,  89,  91,  93,  97,
  101, 110, 118, 132, 141, 157, 171, 186, 206, 224, 241, 255,
  537, 549, 560, 576, 592, 608, 628, 650, 669, 693, 719, 744,
  773, 805, 834, 862, 105, 107, 111, 116, 120, 128, 136, 148,
  160, 174, 187, 205, 221, 236, 251, 267, 546, 558, 570, 583,
  600, 617, 636, 657, 680, 706, 729, 758, 787, 813, 846, 871,
  122, 126, 130, 134, 138, 144, 155, 163, 180, 191, 207, 222,
  232, 248, 264, 278, 552, 564, 579, 594, 609, 630, 648, 666,
  688, 715, 742, 768, 797, 827, 856, 877, 145, 149, 151, 153,
  161, 165, 177, 184, 200, 212, 225, 237, 249, 262, 275, 289,
  563, 575, 590, 604, 620, 638, 660, 683, 705, 728, 753, 779,
  809, 839, 866, 889, 167, 169, 172, 178, 182, 188, 198, 209,
  217, 230, 242, 252, 265, 276, 288, 301, 573, 586, 599, 616,
  634, 652, 672, 694, 716, 743, 767, 794, 825, 850, 874, 899,
  192, 194, 196, 202, 204, 213, 220, 228, 234, 247, 256, 268,
  279, 290, 302, 315, 582, 597, 614, 631, 646, 665, 686, 708,
  732, 759, 784, 810, 837, 863, 886, 908, 214, 215, 218, 223,
  226, 231, 239, 244, 253, 261, 271, 283, 292, 304, 317, 325,
  596, 611, 626, 642, 661, 681, 702, 723, 745, 770, 800, 828,
  853, 875, 897, 919, 235, 238, 240, 243, 245, 250, 257, 263,
  270, 280, 287, 298, 307, 319, 329, 340, 612, 624, 640, 658,
  677, 697, 717, 739, 764, 789, 816, 844, 867, 890, 909, 927,
  254, 258, 259, 260, 266, 269, 272, 282, 286, 296, 303, 312,
  323, 333, 341, 355, 627, 641, 655, 674, 690, 713, 735, 760,
  781, 807, 835, 857, 880, 902, 921, 940, 273, 274, 277, 281,
  284, 285, 291, 299, 305, 310, 320, 327, 337, 346, 357, 369,
  643, 659, 675, 689, 710, 733, 754, 777, 803, 831, 851, 872,
  892, 913, 934, 950, 293, 294, 295, 297, 300, 306, 308, 314,
  321, 326, 335, 343, 352, 361, 372, 378, 662, 678, 691, 711,
  731, 749, 774, 798, 822, 848, 869, 887, 906, 925, 942, 961,
  309, 311, 313, 316, 318, 322, 324, 332, 338, 344, 351, 358,
  367, 375, 386, 394, 682, 698, 714, 734, 750, 772, 795, 820,
  842, 864, 884, 904, 923, 938, 954, 967, 328, 330, 331, 334,
  336, 339, 342, 348, 354, 359, 366, 374, 382, 391, 400, 409,
  703, 718, 736, 755, 775, 796, 818, 840, 860, 882, 900, 917,
  936, 952, 965, 977, 345, 347, 349, 350, 353, 356, 360, 364,
  371, 376, 383, 389, 395, 406, 412, 423, 724, 740, 761, 778,
  799, 821, 841, 859, 878, 895, 915, 932, 948, 963, 975, 986,
  362, 363, 365, 368, 370, 373, 377, 379, 387, 392, 397, 405,
  411, 420, 428, 439, 746, 765, 782, 804, 823, 843, 861, 879,
  894, 911, 930, 946, 959, 973, 984, 994, 380, 381, 384, 385,
  388, 390, 393, 396, 403, 408, 413, 422, 427, 436, 444, 452,
  771, 790, 808, 832, 849, 865, 883, 896, 912, 928, 944, 957,
  971,  982,  992, 1001,  398,  399,  401,  402,  404,  407,  410,  414,
  419, 425, 429, 437, 442, 449, 458, 465, 801, 817, 836, 852,
  870,  885,  901,  916,  931,  945,  956,  969,  980,  990,  999, 1007,
  415, 416, 417, 418, 421, 424, 426, 430, 434, 441, 445, 453,
  459, 463, 473, 480, 829, 845, 858, 873, 888, 905, 918, 933,
  947,  958,  970,  979,  988,  997, 1005, 1012,  431,  432,  433,  435,
  438, 440, 443, 446, 451, 456, 461, 468, 475, 479, 488, 494,
  854, 868, 881, 893, 907, 924, 937, 949, 960, 972, 981, 989,
  996, 1003, 1010, 1016,  447,  448,  450,  454,  455,  457,  460,  462,
  469, 472, 477, 482, 490, 495, 499, 503, 876, 891, 903, 914,
  926,  939,  953,  964,  974,  983,  991,  998, 1004, 1009, 1014, 1019,
  464, 466, 467, 470, 471, 474, 476, 478, 484, 489, 493, 497,
  501, 504, 506, 508, 898, 910, 922, 935, 943, 955, 966, 976,
  985,  993, 1000, 1006, 1011, 1015, 1018, 1021,  481,  483,  485,  486,
  487, 491, 492, 496, 498, 500, 502, 505, 507, 509, 510, 511,
  920,  929,  941,  951,  962,  968,  978,  987,  995, 1002, 1008, 1013,
  1017, 1020, 1022, 1023,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_h2_iscan_32x32[1024]) = {
  0,   1,   4,   9,  15,  22,  33,  43,  56,  71,  86, 104,
  121, 142, 166, 189, 214, 233, 254, 273, 292, 309, 328, 345,
  362, 378, 397, 415, 431, 447, 464, 481,   2,   3,   6,  11,
  17,  26,  35,  45,  58,  73,  90, 106, 123, 146, 168, 193,
  215, 236, 255, 274, 294, 310, 329, 346, 363, 381, 399, 416,
  432, 448, 465, 482,   5,   7,   8,  13,  20,  28,  37,  50,
  62,  75,  92, 108, 129, 150, 170, 195, 216, 240, 259, 275,
  295, 312, 331, 348, 365, 383, 400, 417, 433, 449, 467, 485,
  10,  12,  14,  19,  23,  31,  41,  52,  65,  81,  96, 113,
  133, 152, 175, 201, 221, 243, 260, 280, 297, 315, 333, 350,
  367, 385, 402, 418, 434, 452, 470, 486,  16,  18,  21,  24,
  30,  39,  48,  59,  69,  83, 100, 119, 137, 158, 181, 203,
  226, 244, 264, 283, 300, 318, 335, 353, 370, 388, 404, 420,
  438, 455, 471, 487,  25,  27,  29,  32,  40,  46,  54,  67,
  79,  94, 109, 127, 143, 164, 185, 210, 231, 250, 269, 285,
  304, 322, 339, 356, 373, 389, 407, 423, 440, 457, 473, 491,
  34,  36,  38,  42,  49,  55,  64,  76,  87, 102, 117, 135,
  154, 176, 197, 219, 239, 256, 272, 291, 308, 324, 341, 359,
  377, 393, 410, 426, 442, 460, 476, 492,  44,  47,  51,  53,
  60,  68,  77,  85,  98, 114, 131, 147, 162, 183, 208, 227,
  245, 262, 282, 298, 314, 332, 349, 364, 379, 396, 412, 430,
  446, 462, 478, 495,  57,  61,  63,  66,  70,  80,  88,  99,
  112, 124, 140, 159, 179, 199, 217, 234, 253, 270, 286, 305,
  321, 337, 354, 371, 387, 403, 419, 435, 451, 468, 484, 498,
  72,  74,  78,  82,  84,  95, 103, 115, 125, 139, 156, 173,
  190, 211, 229, 246, 261, 281, 296, 311, 325, 344, 360, 375,
  392, 408, 425, 441, 456, 472, 489, 500,  89,  91,  93,  97,
  101, 110, 118, 132, 141, 157, 171, 186, 206, 224, 241, 257,
  271, 287, 303, 320, 336, 351, 366, 384, 398, 413, 429, 445,
  461, 477, 493, 502, 105, 107, 111, 116, 120, 128, 136, 148,
  160, 174, 187, 205, 222, 237, 251, 267, 284, 299, 313, 327,
  343, 358, 374, 390, 405, 422, 437, 453, 469, 483, 497, 505,
  122, 126, 130, 134, 138, 144, 155, 163, 180, 191, 207, 223,
  232, 248, 265, 278, 293, 307, 323, 338, 352, 368, 382, 395,
  411, 427, 443, 459, 475, 490, 501, 507, 145, 149, 151, 153,
  161, 165, 177, 184, 200, 212, 225, 238, 249, 263, 276, 289,
  306, 319, 334, 347, 361, 376, 391, 406, 421, 436, 450, 463,
  479, 496, 504, 509, 167, 169, 172, 178, 182, 188, 198, 209,
  218, 230, 242, 252, 266, 277, 288, 301, 317, 330, 342, 357,
  372, 386, 401, 414, 428, 444, 458, 474, 488, 499, 506, 510,
  192, 194, 196, 202, 204, 213, 220, 228, 235, 247, 258, 268,
  279, 290, 302, 316, 326, 340, 355, 369, 380, 394, 409, 424,
  439, 454, 466, 480, 494, 503, 508, 511, 512, 513, 514, 515,
  516, 517, 520, 523, 526, 532, 537, 545, 551, 561, 573, 581,
  596, 610, 625, 642, 661, 680, 701, 722, 745, 770, 800, 827,
  853, 875, 897, 919, 518, 519, 521, 522, 524, 525, 528, 533,
  536, 542, 549, 557, 564, 575, 585, 597, 611, 623, 640, 656,
  676, 696, 717, 739, 763, 789, 815, 844, 867, 889, 909, 927,
  527, 529, 530, 531, 534, 535, 538, 544, 548, 555, 560, 569,
  579, 589, 598, 614, 626, 641, 655, 673, 690, 712, 735, 760,
  780, 806, 834, 857, 880, 902, 921, 940, 539, 540, 541, 543,
  546, 547, 550, 558, 562, 567, 576, 583, 593, 603, 616, 631,
  643, 657, 674, 689, 710, 733, 752, 776, 803, 830, 850, 872,
  892, 913, 934, 950, 552, 553, 554, 556, 559, 563, 565, 571,
  577, 582, 591, 600, 609, 620, 634, 644, 662, 677, 691, 711,
  730, 748, 773, 798, 822, 847, 869, 887, 906, 925, 942, 961,
  566, 568, 570, 572, 574, 578, 580, 588, 594, 601, 608, 617,
  629, 637, 652, 665, 681, 697, 713, 734, 749, 772, 793, 819,
  842, 863, 884, 904, 923, 938, 954, 967, 584, 586, 587, 590,
  592, 595, 599, 605, 613, 618, 628, 636, 648, 660, 671, 686,
  702, 718, 736, 753, 774, 794, 818, 840, 860, 882, 900, 917,
  936, 952, 965, 977, 602, 604, 606, 607, 612, 615, 619, 624,
  633, 638, 649, 658, 666, 683, 692, 707, 723, 740, 761, 777,
  799, 820, 841, 859, 877, 895, 915, 932, 948, 963, 975, 986,
  621, 622, 627, 630, 632, 635, 639, 645, 653, 663, 668, 682,
  688, 704, 716, 732, 746, 764, 781, 804, 823, 843, 861, 878,
  894, 911, 930, 946, 959, 973, 984, 994, 646, 647, 650, 651,
  654, 659, 664, 667, 678, 685, 693, 706, 715, 728, 743, 757,
  771, 790, 807, 831, 848, 864, 883, 896, 912, 928, 944, 957,
  971,  982,  992, 1001,  669,  670,  672,  675,  679,  684,  687,  694,
  703, 709, 719, 729, 741, 754, 767, 783, 801, 816, 835, 851,
  870,  885,  901,  916,  931,  945,  956,  969,  980,  990,  999, 1007,
  695, 698, 699, 700, 705, 708, 714, 720, 726, 738, 744, 758,
  768, 779, 795, 810, 828, 845, 858, 873, 888, 905, 918, 933,
  947,  958,  970,  979,  988,  997, 1005, 1012,  721,  724,  725,  727,
  731, 737, 742, 747, 756, 765, 775, 786, 797, 809, 825, 837,
  854, 868, 881, 893, 907, 924, 937, 949, 960, 972, 981, 989,
  996, 1003, 1010, 1016,  750,  751,  755,  759,  762,  766,  769,  778,
  787, 792, 805, 812, 829, 838, 852, 865, 876, 890, 903, 914,
  926,  939,  953,  964,  974,  983,  991,  998, 1004, 1009, 1014, 1019,
  782, 784, 785, 788, 791, 796, 802, 808, 814, 826, 836, 846,
  856, 866, 874, 886, 898, 910, 922, 935, 943, 955, 966, 976,
  985,  993, 1000, 1006, 1011, 1015, 1018, 1021,  811,  813,  817,  821,
  824, 832, 833, 839, 849, 855, 862, 871, 879, 891, 899, 908,
  920,  929,  941,  951,  962,  968,  978,  987,  995, 1002, 1008, 1013,
  1017, 1020, 1022, 1023,
};

DECLARE_ALIGNED(16, static const int16_t, vp10_qtr_iscan_32x32[1024]) = {
  0,   1,   4,   9,  15,  22,  33,  43,  56,  71,  86, 104,
  121, 142, 166, 189, 256, 268, 286, 310, 334, 364, 400, 435,
  471, 510, 553, 598, 640, 683, 732, 780,   2,   3,   6,  11,
  17,  26,  35,  45,  58,  73,  90, 106, 123, 146, 168, 193,
  258, 270, 288, 312, 338, 366, 402, 437, 473, 516, 557, 600,
  642, 687, 736, 782,   5,   7,   8,  13,  20,  28,  37,  50,
  62,  75,  92, 108, 129, 150, 170, 195, 260, 274, 292, 314,
  340, 370, 406, 441, 478, 520, 559, 604, 646, 689, 740, 788,
  10,  12,  14,  19,  23,  31,  41,  52,  65,  81,  96, 113,
  133, 152, 175, 201, 262, 276, 294, 316, 344, 376, 410, 445,
  484, 524, 563, 606, 648, 697, 746, 793,  16,  18,  21,  24,
  30,  39,  48,  59,  69,  83, 100, 119, 137, 158, 181, 203,
  264, 278, 300, 322, 350, 380, 414, 451, 490, 530, 571, 612,
  656, 705, 750, 799,  25,  27,  29,  32,  40,  46,  54,  67,
  79,  94, 109, 127, 143, 164, 185, 210, 266, 282, 302, 326,
  354, 388, 422, 459, 496, 533, 579, 618, 665, 711, 754, 809,
  34,  36,  38,  42,  49,  55,  64,  76,  87, 102, 117, 135,
  154, 176, 197, 216, 272, 289, 308, 332, 362, 392, 427, 465,
  504, 545, 585, 626, 671, 717, 766, 813,  44,  47,  51,  53,
  60,  68,  77,  85,  98, 114, 131, 147, 162, 183, 208, 222,
  279, 298, 320, 346, 374, 408, 442, 475, 511, 551, 592, 638,
  681, 726, 772, 821,  57,  61,  63,  66,  70,  80,  88,  99,
  112, 124, 140, 159, 179, 199, 214, 227, 284, 304, 328, 355,
  386, 418, 455, 492, 528, 567, 608, 649, 695, 742, 786, 833,
  72,  74,  78,  82,  84,  95, 103, 115, 125, 139, 156, 173,
  190, 211, 224, 233, 296, 317, 342, 367, 394, 433, 466, 500,
  543, 581, 622, 667, 707, 752, 803, 843,  89,  91,  93,  97,
  101, 110, 118, 132, 141, 157, 171, 186, 206, 220, 231, 239,
  306, 330, 352, 384, 415, 447, 482, 521, 554, 593, 636, 677,
  722, 770, 815, 852, 105, 107, 111, 116, 120, 128, 136, 148,
  160, 174, 187, 205, 218, 229, 237, 244, 323, 347, 371, 398,
  431, 463, 498, 534, 573, 616, 654, 698, 743, 783, 831, 864,
  122, 126, 130, 134, 138, 144, 155, 163, 180, 191, 207, 219,
  226, 235, 242, 248, 335, 360, 390, 419, 449, 485, 518, 549,
  587, 630, 672, 715, 760, 805, 845, 872, 145, 149, 151, 153,
  161, 165, 177, 184, 200, 212, 221, 230, 236, 241, 246, 251,
  356, 382, 411, 438, 469, 501, 539, 577, 613, 652, 690, 730,
  776, 822, 858, 886, 167, 169, 172, 178, 182, 188, 198, 209,
  215, 225, 232, 238, 243, 247, 250, 253, 378, 403, 428, 461,
  494, 526, 560, 594, 632, 675, 713, 755, 801, 837, 868, 897,
  192, 194, 196, 202, 204, 213, 217, 223, 228, 234, 240, 245,
  249, 252, 254, 255, 395, 425, 457, 488, 512, 547, 583, 619,
  659, 699, 737, 778, 819, 854, 882, 907, 257, 259, 261, 263,
  265, 267, 273, 280, 285, 297, 307, 324, 336, 357, 379, 396,
  424, 452, 479, 508, 541, 574, 609, 643, 679, 719, 764, 806,
  841, 870, 895, 919, 269, 271, 275, 277, 281, 283, 290, 299,
  305, 318, 331, 348, 361, 383, 404, 426, 453, 476, 506, 535,
  568, 601, 634, 669, 708, 748, 789, 829, 860, 887, 909, 927,
  287, 291, 293, 295, 301, 303, 309, 321, 329, 343, 353, 372,
  391, 412, 429, 458, 480, 507, 532, 564, 590, 627, 663, 703,
  733, 773, 816, 847, 876, 901, 921, 940, 311, 313, 315, 319,
  325, 327, 333, 349, 358, 368, 385, 399, 420, 439, 462, 489,
  509, 536, 565, 589, 624, 661, 691, 727, 768, 810, 838, 866,
  890, 913, 934, 950, 337, 339, 341, 345, 351, 359, 363, 375,
  387, 397, 416, 432, 450, 470, 495, 513, 542, 569, 591, 625,
  657, 684, 723, 762, 797, 834, 862, 884, 905, 925, 942, 961,
  365, 369, 373, 377, 381, 389, 393, 409, 421, 434, 448, 464,
  486, 502, 527, 548, 575, 602, 628, 662, 685, 721, 756, 794,
  827, 855, 880, 903, 923, 938, 954, 967, 401, 405, 407, 413,
  417, 423, 430, 443, 456, 467, 483, 499, 519, 540, 561, 584,
  610, 635, 664, 692, 724, 757, 792, 825, 850, 878, 899, 917,
  936, 952, 965, 977, 436, 440, 444, 446, 454, 460, 468, 477,
  493, 503, 522, 537, 550, 578, 595, 620, 644, 670, 704, 728,
  763, 795, 826, 849, 873, 893, 915, 932, 948, 963, 975, 986,
  472, 474, 481, 487, 491, 497, 505, 514, 529, 544, 555, 576,
  588, 614, 633, 660, 680, 709, 734, 769, 798, 828, 851, 874,
  892, 911, 930, 946, 959, 973, 984, 994, 515, 517, 523, 525,
  531, 538, 546, 552, 570, 582, 596, 617, 631, 653, 676, 700,
  720, 749, 774, 811, 835, 856, 879, 894, 912, 928, 944, 957,
  971,  982,  992, 1001,  556,  558,  562,  566,  572,  580,  586,  597,
  611, 623, 637, 655, 673, 693, 714, 738, 765, 790, 817, 839,
  863,  881,  900,  916,  931,  945,  956,  969,  980,  990,  999, 1007,
  599, 603, 605, 607, 615, 621, 629, 639, 650, 668, 678, 701,
  716, 731, 758, 779, 807, 830, 848, 867, 885, 904, 918, 933,
  947,  958,  970,  979,  988,  997, 1005, 1012,  641,  645,  647,  651,
  658, 666, 674, 682, 696, 710, 725, 744, 761, 777, 802, 820,
  842, 861, 877, 891, 906, 924, 937, 949, 960, 972, 981, 989,
  996, 1003, 1010, 1016,  686,  688,  694,  702,  706,  712,  718,  729,
  745, 753, 771, 784, 808, 823, 840, 857, 871, 888, 902, 914,
  926,  939,  953,  964,  974,  983,  991,  998, 1004, 1009, 1014, 1019,
  735, 739, 741, 747, 751, 759, 767, 775, 787, 804, 818, 832,
  846, 859, 869, 883, 896, 910, 922, 935, 943, 955, 966, 976,
  985,  993, 1000, 1006, 1011, 1015, 1018, 1021,  781,  785,  791,  796,
  800, 812, 814, 824, 836, 844, 853, 865, 875, 889, 898, 908,
  920,  929,  941,  951,  962,  968,  978,  987,  995, 1002, 1008, 1013,
  1017, 1020, 1022, 1023,
};
#endif  // CONFIG_EXT_TX

const scan_order vp10_default_scan_orders[TX_SIZES] = {
  {default_scan_4x4,   vp10_default_iscan_4x4,   default_scan_4x4_neighbors},
  {default_scan_8x8,   vp10_default_iscan_8x8,   default_scan_8x8_neighbors},
  {default_scan_16x16, vp10_default_iscan_16x16, default_scan_16x16_neighbors},
  {default_scan_32x32, vp10_default_iscan_32x32, default_scan_32x32_neighbors},
};

#if CONFIG_EXT_TX
const scan_order vp10_intra_scan_orders[TX_SIZES][TX_TYPES] = {
  {  // TX_4X4
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {row_scan_4x4,     vp10_row_iscan_4x4,     row_scan_4x4_neighbors},
    {col_scan_4x4,     vp10_col_iscan_4x4,     col_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {mrow_scan_4x4,    vp10_mrow_iscan_4x4,    mrow_scan_4x4_neighbors},
    {row_scan_4x4,     vp10_row_iscan_4x4,     row_scan_4x4_neighbors},
    {col_scan_4x4,     vp10_col_iscan_4x4,     col_scan_4x4_neighbors},
    {row_scan_4x4,     vp10_row_iscan_4x4,     row_scan_4x4_neighbors},
    {col_scan_4x4,     vp10_col_iscan_4x4,     col_scan_4x4_neighbors},
    {row_scan_4x4,     vp10_row_iscan_4x4,     row_scan_4x4_neighbors},
    {col_scan_4x4,     vp10_col_iscan_4x4,     col_scan_4x4_neighbors},
  }, {  // TX_8X8
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {row_scan_8x8,     vp10_row_iscan_8x8,     row_scan_8x8_neighbors},
    {col_scan_8x8,     vp10_col_iscan_8x8,     col_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {mrow_scan_8x8,    vp10_mrow_iscan_8x8,    mrow_scan_8x8_neighbors},
    {row_scan_8x8,     vp10_row_iscan_8x8,     row_scan_8x8_neighbors},
    {col_scan_8x8,     vp10_col_iscan_8x8,     col_scan_8x8_neighbors},
    {row_scan_8x8,     vp10_row_iscan_8x8,     row_scan_8x8_neighbors},
    {col_scan_8x8,     vp10_col_iscan_8x8,     col_scan_8x8_neighbors},
    {row_scan_8x8,     vp10_row_iscan_8x8,     row_scan_8x8_neighbors},
    {col_scan_8x8,     vp10_col_iscan_8x8,     col_scan_8x8_neighbors},
  }, {  // TX_16X16
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {row_scan_16x16,     vp10_row_iscan_16x16,     row_scan_16x16_neighbors},
    {col_scan_16x16,     vp10_col_iscan_16x16,     col_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {mrow_scan_16x16,  vp10_mrow_iscan_16x16,  mrow_scan_16x16_neighbors},
    {row_scan_16x16,     vp10_row_iscan_16x16,     row_scan_16x16_neighbors},
    {col_scan_16x16,     vp10_col_iscan_16x16,     col_scan_16x16_neighbors},
    {row_scan_16x16,     vp10_row_iscan_16x16,     row_scan_16x16_neighbors},
    {col_scan_16x16,     vp10_col_iscan_16x16,     col_scan_16x16_neighbors},
    {row_scan_16x16,     vp10_row_iscan_16x16,     row_scan_16x16_neighbors},
    {col_scan_16x16,     vp10_col_iscan_16x16,     col_scan_16x16_neighbors},
  }, {  // TX_32X32
    {default_scan_32x32, vp10_default_iscan_32x32,
     default_scan_32x32_neighbors},
    {h2_scan_32x32, vp10_h2_iscan_32x32,
     h2_scan_32x32_neighbors},
    {v2_scan_32x32, vp10_v2_iscan_32x32,
     v2_scan_32x32_neighbors},
    {qtr_scan_32x32, vp10_qtr_iscan_32x32,
     qtr_scan_32x32_neighbors},
    {h2_scan_32x32, vp10_h2_iscan_32x32,
     h2_scan_32x32_neighbors},
    {v2_scan_32x32, vp10_v2_iscan_32x32,
     v2_scan_32x32_neighbors},
    {qtr_scan_32x32, vp10_qtr_iscan_32x32,
     qtr_scan_32x32_neighbors},
    {qtr_scan_32x32, vp10_qtr_iscan_32x32,
     qtr_scan_32x32_neighbors},
    {qtr_scan_32x32, vp10_qtr_iscan_32x32,
     qtr_scan_32x32_neighbors},
    {mrow_scan_32x32,  vp10_mrow_iscan_32x32,  mrow_scan_32x32_neighbors},
    {mrow_scan_32x32,  vp10_mrow_iscan_32x32,  mrow_scan_32x32_neighbors},
    {mcol_scan_32x32,  vp10_mcol_iscan_32x32,  mcol_scan_32x32_neighbors},
    {mrow_scan_32x32,  vp10_mrow_iscan_32x32,  mrow_scan_32x32_neighbors},
    {mcol_scan_32x32,  vp10_mcol_iscan_32x32,  mcol_scan_32x32_neighbors},
    {mrow_scan_32x32,  vp10_mrow_iscan_32x32,  mrow_scan_32x32_neighbors},
    {mcol_scan_32x32,  vp10_mcol_iscan_32x32,  mcol_scan_32x32_neighbors},
  }
};

const scan_order vp10_inter_scan_orders[TX_SIZES][TX_TYPES] = {
  {  // TX_4X4
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {mrow_scan_4x4,    vp10_mrow_iscan_4x4,    mrow_scan_4x4_neighbors},
    {mrow_scan_4x4,    vp10_mrow_iscan_4x4,    mrow_scan_4x4_neighbors},
    {mcol_scan_4x4,    vp10_mcol_iscan_4x4,    mcol_scan_4x4_neighbors},
    {mrow_scan_4x4,    vp10_mrow_iscan_4x4,    mrow_scan_4x4_neighbors},
    {mcol_scan_4x4,    vp10_mcol_iscan_4x4,    mcol_scan_4x4_neighbors},
    {mrow_scan_4x4,    vp10_mrow_iscan_4x4,    mrow_scan_4x4_neighbors},
    {mcol_scan_4x4,    vp10_mcol_iscan_4x4,    mcol_scan_4x4_neighbors},
  }, {  // TX_8X8
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {mrow_scan_8x8,    vp10_mrow_iscan_8x8,    mrow_scan_8x8_neighbors},
    {mrow_scan_8x8,    vp10_mrow_iscan_8x8,    mrow_scan_8x8_neighbors},
    {mcol_scan_8x8,    vp10_mcol_iscan_8x8,    mcol_scan_8x8_neighbors},
    {mrow_scan_8x8,    vp10_mrow_iscan_8x8,    mrow_scan_8x8_neighbors},
    {mcol_scan_8x8,    vp10_mcol_iscan_8x8,    mcol_scan_8x8_neighbors},
    {mrow_scan_8x8,    vp10_mrow_iscan_8x8,    mrow_scan_8x8_neighbors},
    {mcol_scan_8x8,    vp10_mcol_iscan_8x8,    mcol_scan_8x8_neighbors},
  }, {  // TX_16X16
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {mrow_scan_16x16,  vp10_mrow_iscan_16x16,  mrow_scan_16x16_neighbors},
    {mrow_scan_16x16,  vp10_mrow_iscan_16x16,  mrow_scan_16x16_neighbors},
    {mcol_scan_16x16,  vp10_mcol_iscan_16x16,  mcol_scan_16x16_neighbors},
    {mrow_scan_16x16,  vp10_mrow_iscan_16x16,  mrow_scan_16x16_neighbors},
    {mcol_scan_16x16,  vp10_mcol_iscan_16x16,  mcol_scan_16x16_neighbors},
    {mrow_scan_16x16,  vp10_mrow_iscan_16x16,  mrow_scan_16x16_neighbors},
    {mcol_scan_16x16,  vp10_mcol_iscan_16x16,  mcol_scan_16x16_neighbors},
  }, {  // TX_32X32
    {default_scan_32x32, vp10_default_iscan_32x32,
     default_scan_32x32_neighbors},
    {h2_scan_32x32, vp10_h2_iscan_32x32,
     h2_scan_32x32_neighbors},
    {v2_scan_32x32, vp10_v2_iscan_32x32,
     v2_scan_32x32_neighbors},
    {qtr_scan_32x32, vp10_qtr_iscan_32x32,
     qtr_scan_32x32_neighbors},
    {h2_scan_32x32, vp10_h2_iscan_32x32,
     h2_scan_32x32_neighbors},
    {v2_scan_32x32, vp10_v2_iscan_32x32,
     v2_scan_32x32_neighbors},
    {qtr_scan_32x32, vp10_qtr_iscan_32x32,
     qtr_scan_32x32_neighbors},
    {qtr_scan_32x32, vp10_qtr_iscan_32x32,
     qtr_scan_32x32_neighbors},
    {qtr_scan_32x32, vp10_qtr_iscan_32x32,
     qtr_scan_32x32_neighbors},
    {mrow_scan_32x32,  vp10_mrow_iscan_32x32,  mrow_scan_32x32_neighbors},
    {mrow_scan_32x32,  vp10_mrow_iscan_32x32,  mrow_scan_32x32_neighbors},
    {mcol_scan_32x32,  vp10_mcol_iscan_32x32,  mcol_scan_32x32_neighbors},
    {mrow_scan_32x32,  vp10_mrow_iscan_32x32,  mrow_scan_32x32_neighbors},
    {mcol_scan_32x32,  vp10_mcol_iscan_32x32,  mcol_scan_32x32_neighbors},
    {mrow_scan_32x32,  vp10_mrow_iscan_32x32,  mrow_scan_32x32_neighbors},
    {mcol_scan_32x32,  vp10_mcol_iscan_32x32,  mcol_scan_32x32_neighbors},
  }
};

#else   // CONFIG_EXT_TX

const scan_order vp10_intra_scan_orders[TX_SIZES][TX_TYPES] = {
  {  // TX_4X4
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors},
    {row_scan_4x4,     vp10_row_iscan_4x4,     row_scan_4x4_neighbors},
    {col_scan_4x4,     vp10_col_iscan_4x4,     col_scan_4x4_neighbors},
    {default_scan_4x4, vp10_default_iscan_4x4, default_scan_4x4_neighbors}
  }, {  // TX_8X8
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors},
    {row_scan_8x8,     vp10_row_iscan_8x8,     row_scan_8x8_neighbors},
    {col_scan_8x8,     vp10_col_iscan_8x8,     col_scan_8x8_neighbors},
    {default_scan_8x8, vp10_default_iscan_8x8, default_scan_8x8_neighbors}
  }, {  // TX_16X16
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors},
    {row_scan_16x16,     vp10_row_iscan_16x16,     row_scan_16x16_neighbors},
    {col_scan_16x16,     vp10_col_iscan_16x16,     col_scan_16x16_neighbors},
    {default_scan_16x16, vp10_default_iscan_16x16,
     default_scan_16x16_neighbors}
  }, {  // TX_32X32
    {default_scan_32x32, vp10_default_iscan_32x32,
     default_scan_32x32_neighbors},
    {default_scan_32x32, vp10_default_iscan_32x32,
     default_scan_32x32_neighbors},
    {default_scan_32x32, vp10_default_iscan_32x32,
     default_scan_32x32_neighbors},
    {default_scan_32x32, vp10_default_iscan_32x32,
     default_scan_32x32_neighbors},
  }
};
#endif  // CONFIG_EXT_TX