| /* |
| * Copyright (c) 2014 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/encoder/cost.h" |
| #if CONFIG_ANS |
| #include "vp10/common/ans.h" |
| #endif // CONFIG_ANS |
| #include "vp10/common/entropy.h" |
| |
| /* round(-log2(i/256.) * (1 << VP9_PROB_COST_SHIFT)) |
| Begins with a bogus entry for simpler addressing. */ |
| const uint16_t vp10_prob_cost[256] = { |
| 4096, 4096, 3584, 3284, 3072, 2907, 2772, 2659, 2560, 2473, 2395, 2325, |
| 2260, 2201, 2147, 2096, 2048, 2003, 1961, 1921, 1883, 1847, 1813, 1780, |
| 1748, 1718, 1689, 1661, 1635, 1609, 1584, 1559, 1536, 1513, 1491, 1470, |
| 1449, 1429, 1409, 1390, 1371, 1353, 1335, 1318, 1301, 1284, 1268, 1252, |
| 1236, 1221, 1206, 1192, 1177, 1163, 1149, 1136, 1123, 1110, 1097, 1084, |
| 1072, 1059, 1047, 1036, 1024, 1013, 1001, 990, 979, 968, 958, 947, |
| 937, 927, 917, 907, 897, 887, 878, 868, 859, 850, 841, 832, |
| 823, 814, 806, 797, 789, 780, 772, 764, 756, 748, 740, 732, |
| 724, 717, 709, 702, 694, 687, 680, 673, 665, 658, 651, 644, |
| 637, 631, 624, 617, 611, 604, 598, 591, 585, 578, 572, 566, |
| 560, 554, 547, 541, 535, 530, 524, 518, 512, 506, 501, 495, |
| 489, 484, 478, 473, 467, 462, 456, 451, 446, 441, 435, 430, |
| 425, 420, 415, 410, 405, 400, 395, 390, 385, 380, 375, 371, |
| 366, 361, 356, 352, 347, 343, 338, 333, 329, 324, 320, 316, |
| 311, 307, 302, 298, 294, 289, 285, 281, 277, 273, 268, 264, |
| 260, 256, 252, 248, 244, 240, 236, 232, 228, 224, 220, 216, |
| 212, 209, 205, 201, 197, 194, 190, 186, 182, 179, 175, 171, |
| 168, 164, 161, 157, 153, 150, 146, 143, 139, 136, 132, 129, |
| 125, 122, 119, 115, 112, 109, 105, 102, 99, 95, 92, 89, |
| 86, 82, 79, 76, 73, 70, 66, 63, 60, 57, 54, 51, |
| 48, 45, 42, 38, 35, 32, 29, 26, 23, 20, 18, 15, |
| 12, 9, 6, 3}; |
| |
| #if CONFIG_ANS |
| // round(-log2(i/1024.) * (1 << VP9_PROB_COST_SHIFT)) |
| static const uint16_t vp10_prob_cost10[1024] = { |
| 5120, 5120, 4608, 4308, 4096, 3931, 3796, 3683, 3584, 3497, 3419, 3349, |
| 3284, 3225, 3171, 3120, 3072, 3027, 2985, 2945, 2907, 2871, 2837, 2804, |
| 2772, 2742, 2713, 2685, 2659, 2633, 2608, 2583, 2560, 2537, 2515, 2494, |
| 2473, 2453, 2433, 2414, 2395, 2377, 2359, 2342, 2325, 2308, 2292, 2276, |
| 2260, 2245, 2230, 2216, 2201, 2187, 2173, 2160, 2147, 2134, 2121, 2108, |
| 2096, 2083, 2071, 2060, 2048, 2037, 2025, 2014, 2003, 1992, 1982, 1971, |
| 1961, 1951, 1941, 1931, 1921, 1911, 1902, 1892, 1883, 1874, 1865, 1856, |
| 1847, 1838, 1830, 1821, 1813, 1804, 1796, 1788, 1780, 1772, 1764, 1756, |
| 1748, 1741, 1733, 1726, 1718, 1711, 1704, 1697, 1689, 1682, 1675, 1668, |
| 1661, 1655, 1648, 1641, 1635, 1628, 1622, 1615, 1609, 1602, 1596, 1590, |
| 1584, 1578, 1571, 1565, 1559, 1554, 1548, 1542, 1536, 1530, 1525, 1519, |
| 1513, 1508, 1502, 1497, 1491, 1486, 1480, 1475, 1470, 1465, 1459, 1454, |
| 1449, 1444, 1439, 1434, 1429, 1424, 1419, 1414, 1409, 1404, 1399, 1395, |
| 1390, 1385, 1380, 1376, 1371, 1367, 1362, 1357, 1353, 1348, 1344, 1340, |
| 1335, 1331, 1326, 1322, 1318, 1313, 1309, 1305, 1301, 1297, 1292, 1288, |
| 1284, 1280, 1276, 1272, 1268, 1264, 1260, 1256, 1252, 1248, 1244, 1240, |
| 1236, 1233, 1229, 1225, 1221, 1218, 1214, 1210, 1206, 1203, 1199, 1195, |
| 1192, 1188, 1185, 1181, 1177, 1174, 1170, 1167, 1163, 1160, 1156, 1153, |
| 1149, 1146, 1143, 1139, 1136, 1133, 1129, 1126, 1123, 1119, 1116, 1113, |
| 1110, 1106, 1103, 1100, 1097, 1094, 1090, 1087, 1084, 1081, 1078, 1075, |
| 1072, 1069, 1066, 1062, 1059, 1056, 1053, 1050, 1047, 1044, 1042, 1039, |
| 1036, 1033, 1030, 1027, 1024, 1021, 1018, 1015, 1013, 1010, 1007, 1004, |
| 1001, 998, 996, 993, 990, 987, 985, 982, 979, 977, 974, 971, |
| 968, 966, 963, 960, 958, 955, 953, 950, 947, 945, 942, 940, |
| 937, 934, 932, 929, 927, 924, 922, 919, 917, 914, 912, 909, |
| 907, 904, 902, 899, 897, 895, 892, 890, 887, 885, 883, 880, |
| 878, 876, 873, 871, 868, 866, 864, 861, 859, 857, 855, 852, |
| 850, 848, 845, 843, 841, 839, 836, 834, 832, 830, 828, 825, |
| 823, 821, 819, 817, 814, 812, 810, 808, 806, 804, 801, 799, |
| 797, 795, 793, 791, 789, 787, 785, 783, 780, 778, 776, 774, |
| 772, 770, 768, 766, 764, 762, 760, 758, 756, 754, 752, 750, |
| 748, 746, 744, 742, 740, 738, 736, 734, 732, 730, 728, 726, |
| 724, 723, 721, 719, 717, 715, 713, 711, 709, 707, 706, 704, |
| 702, 700, 698, 696, 694, 693, 691, 689, 687, 685, 683, 682, |
| 680, 678, 676, 674, 673, 671, 669, 667, 665, 664, 662, 660, |
| 658, 657, 655, 653, 651, 650, 648, 646, 644, 643, 641, 639, |
| 637, 636, 634, 632, 631, 629, 627, 626, 624, 622, 621, 619, |
| 617, 616, 614, 612, 611, 609, 607, 606, 604, 602, 601, 599, |
| 598, 596, 594, 593, 591, 590, 588, 586, 585, 583, 582, 580, |
| 578, 577, 575, 574, 572, 571, 569, 567, 566, 564, 563, 561, |
| 560, 558, 557, 555, 554, 552, 550, 549, 547, 546, 544, 543, |
| 541, 540, 538, 537, 535, 534, 532, 531, 530, 528, 527, 525, |
| 524, 522, 521, 519, 518, 516, 515, 513, 512, 511, 509, 508, |
| 506, 505, 503, 502, 501, 499, 498, 496, 495, 493, 492, 491, |
| 489, 488, 486, 485, 484, 482, 481, 480, 478, 477, 475, 474, |
| 473, 471, 470, 469, 467, 466, 465, 463, 462, 460, 459, 458, |
| 456, 455, 454, 452, 451, 450, 448, 447, 446, 444, 443, 442, |
| 441, 439, 438, 437, 435, 434, 433, 431, 430, 429, 428, 426, |
| 425, 424, 422, 421, 420, 419, 417, 416, 415, 414, 412, 411, |
| 410, 409, 407, 406, 405, 404, 402, 401, 400, 399, 397, 396, |
| 395, 394, 392, 391, 390, 389, 387, 386, 385, 384, 383, 381, |
| 380, 379, 378, 377, 375, 374, 373, 372, 371, 369, 368, 367, |
| 366, 365, 364, 362, 361, 360, 359, 358, 356, 355, 354, 353, |
| 352, 351, 349, 348, 347, 346, 345, 344, 343, 341, 340, 339, |
| 338, 337, 336, 335, 333, 332, 331, 330, 329, 328, 327, 326, |
| 324, 323, 322, 321, 320, 319, 318, 317, 316, 314, 313, 312, |
| 311, 310, 309, 308, 307, 306, 305, 303, 302, 301, 300, 299, |
| 298, 297, 296, 295, 294, 293, 292, 291, 289, 288, 287, 286, |
| 285, 284, 283, 282, 281, 280, 279, 278, 277, 276, 275, 274, |
| 273, 272, 271, 269, 268, 267, 266, 265, 264, 263, 262, 261, |
| 260, 259, 258, 257, 256, 255, 254, 253, 252, 251, 250, 249, |
| 248, 247, 246, 245, 244, 243, 242, 241, 240, 239, 238, 237, |
| 236, 235, 234, 233, 232, 231, 230, 229, 228, 227, 226, 225, |
| 224, 223, 222, 221, 220, 219, 218, 217, 216, 215, 214, 213, |
| 212, 212, 211, 210, 209, 208, 207, 206, 205, 204, 203, 202, |
| 201, 200, 199, 198, 197, 196, 195, 194, 194, 193, 192, 191, |
| 190, 189, 188, 187, 186, 185, 184, 183, 182, 181, 181, 180, |
| 179, 178, 177, 176, 175, 174, 173, 172, 171, 170, 170, 169, |
| 168, 167, 166, 165, 164, 163, 162, 161, 161, 160, 159, 158, |
| 157, 156, 155, 154, 153, 152, 152, 151, 150, 149, 148, 147, |
| 146, 145, 145, 144, 143, 142, 141, 140, 139, 138, 138, 137, |
| 136, 135, 134, 133, 132, 132, 131, 130, 129, 128, 127, 126, |
| 125, 125, 124, 123, 122, 121, 120, 120, 119, 118, 117, 116, |
| 115, 114, 114, 113, 112, 111, 110, 109, 109, 108, 107, 106, |
| 105, 104, 104, 103, 102, 101, 100, 99, 99, 98, 97, 96, |
| 95, 95, 94, 93, 92, 91, 90, 90, 89, 88, 87, 86, |
| 86, 85, 84, 83, 82, 82, 81, 80, 79, 78, 78, 77, |
| 76, 75, 74, 74, 73, 72, 71, 70, 70, 69, 68, 67, |
| 66, 66, 65, 64, 63, 62, 62, 61, 60, 59, 59, 58, |
| 57, 56, 55, 55, 54, 53, 52, 52, 51, 50, 49, 48, |
| 48, 47, 46, 45, 45, 44, 43, 42, 42, 41, 40, 39, |
| 38, 38, 37, 36, 35, 35, 34, 33, 32, 32, 31, 30, |
| 29, 29, 28, 27, 26, 26, 25, 24, 23, 23, 22, 21, |
| 20, 20, 19, 18, 18, 17, 16, 15, 15, 14, 13, 12, |
| 12, 11, 10, 9, 9, 8, 7, 7, 6, 5, 4, 4, |
| 3, 2, 1, 1}; |
| #endif // CONFIG_ANS |
| |
| static void cost(int *costs, vpx_tree tree, const vpx_prob *probs, |
| int i, int c) { |
| const vpx_prob prob = probs[i / 2]; |
| int b; |
| |
| assert(prob != 0); |
| for (b = 0; b <= 1; ++b) { |
| const int cc = c + vp10_cost_bit(prob, b); |
| const vpx_tree_index ii = tree[i + b]; |
| |
| if (ii <= 0) |
| costs[-ii] = cc; |
| else |
| cost(costs, tree, probs, ii, cc); |
| } |
| } |
| |
| #if CONFIG_ANS |
| void vp10_cost_tokens_ans(int *costs, const vpx_prob *tree_probs, |
| const rans_dec_lut token_cdf, int skip_eob) { |
| int c_tree = 0; // Cost of the "tree" nodes EOB and ZERO. |
| int i; |
| costs[EOB_TOKEN] = vp10_cost_bit(tree_probs[0], 0); |
| if (!skip_eob) |
| c_tree = vp10_cost_bit(tree_probs[0], 1); |
| for (i = ZERO_TOKEN; i <= CATEGORY6_TOKEN; ++i) { |
| const int p = token_cdf[i + 1] - token_cdf[i]; |
| costs[i] = c_tree + vp10_prob_cost10[p]; |
| } |
| } |
| #endif // CONFIG_ANS |
| |
| void vp10_cost_tokens(int *costs, const vpx_prob *probs, vpx_tree tree) { |
| cost(costs, tree, probs, 0, 0); |
| } |
| |
| void vp10_cost_tokens_skip(int *costs, const vpx_prob *probs, vpx_tree tree) { |
| assert(tree[0] <= 0 && tree[1] > 0); |
| |
| costs[-tree[0]] = vp10_cost_bit(probs[0], 0); |
| cost(costs, tree, probs, 2, 0); |
| } |
