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Nagram/TMessagesProj/jni/libwebp/enc/cost.c

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Update to 2.3.0
2015-01-02 22:15:07 +00:00
// Copyright 2011 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING 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.
// -----------------------------------------------------------------------------
//
// Cost tables for level and modes
//
// Author: Skal (pascal.massimino@gmail.com)
#include "./cost.h"
//------------------------------------------------------------------------------
// Boolean-cost cost table
const uint16_t VP8EntropyCost[256] = {
1792, 1792, 1792, 1536, 1536, 1408, 1366, 1280, 1280, 1216,
1178, 1152, 1110, 1076, 1061, 1024, 1024, 992, 968, 951,
939, 911, 896, 878, 871, 854, 838, 820, 811, 794,
786, 768, 768, 752, 740, 732, 720, 709, 704, 690,
683, 672, 666, 655, 647, 640, 631, 622, 615, 607,
598, 592, 586, 576, 572, 564, 559, 555, 547, 541,
534, 528, 522, 512, 512, 504, 500, 494, 488, 483,
477, 473, 467, 461, 458, 452, 448, 443, 438, 434,
427, 424, 419, 415, 410, 406, 403, 399, 394, 390,
384, 384, 377, 374, 370, 366, 362, 359, 355, 351,
347, 342, 342, 336, 333, 330, 326, 323, 320, 316,
312, 308, 305, 302, 299, 296, 293, 288, 287, 283,
280, 277, 274, 272, 268, 266, 262, 256, 256, 256,
251, 248, 245, 242, 240, 237, 234, 232, 228, 226,
223, 221, 218, 216, 214, 211, 208, 205, 203, 201,
198, 196, 192, 191, 188, 187, 183, 181, 179, 176,
175, 171, 171, 168, 165, 163, 160, 159, 156, 154,
152, 150, 148, 146, 144, 142, 139, 138, 135, 133,
131, 128, 128, 125, 123, 121, 119, 117, 115, 113,
111, 110, 107, 105, 103, 102, 100, 98, 96, 94,
92, 91, 89, 86, 86, 83, 82, 80, 77, 76,
74, 73, 71, 69, 67, 66, 64, 63, 61, 59,
57, 55, 54, 52, 51, 49, 47, 46, 44, 43,
41, 40, 38, 36, 35, 33, 32, 30, 29, 27,
25, 24, 22, 21, 19, 18, 16, 15, 13, 12,
10, 9, 7, 6, 4, 3
};
//------------------------------------------------------------------------------
// Level cost tables
// For each given level, the following table gives the pattern of contexts to
// use for coding it (in [][0]) as well as the bit value to use for each
// context (in [][1]).
const uint16_t VP8LevelCodes[MAX_VARIABLE_LEVEL][2] = {
{0x001, 0x000}, {0x007, 0x001}, {0x00f, 0x005},
{0x00f, 0x00d}, {0x033, 0x003}, {0x033, 0x003}, {0x033, 0x023},
{0x033, 0x023}, {0x033, 0x023}, {0x033, 0x023}, {0x0d3, 0x013},
{0x0d3, 0x013}, {0x0d3, 0x013}, {0x0d3, 0x013}, {0x0d3, 0x013},
{0x0d3, 0x013}, {0x0d3, 0x013}, {0x0d3, 0x013}, {0x0d3, 0x093},
{0x0d3, 0x093}, {0x0d3, 0x093}, {0x0d3, 0x093}, {0x0d3, 0x093},
{0x0d3, 0x093}, {0x0d3, 0x093}, {0x0d3, 0x093}, {0x0d3, 0x093},
{0x0d3, 0x093}, {0x0d3, 0x093}, {0x0d3, 0x093}, {0x0d3, 0x093},
{0x0d3, 0x093}, {0x0d3, 0x093}, {0x0d3, 0x093}, {0x153, 0x053},
{0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053},
{0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053},
{0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053},
{0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053},
{0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053},
{0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053},
{0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053},
{0x153, 0x053}, {0x153, 0x053}, {0x153, 0x053}, {0x153, 0x153}
};
// fixed costs for coding levels, deduce from the coding tree.
// This is only the part that doesn't depend on the probability state.
const uint16_t VP8LevelFixedCosts[MAX_LEVEL + 1] = {
0, 256, 256, 256, 256, 432, 618, 630,
731, 640, 640, 828, 901, 948, 1021, 1101,
1174, 1221, 1294, 1042, 1085, 1115, 1158, 1202,
1245, 1275, 1318, 1337, 1380, 1410, 1453, 1497,
1540, 1570, 1613, 1280, 1295, 1317, 1332, 1358,
1373, 1395, 1410, 1454, 1469, 1491, 1506, 1532,
1547, 1569, 1584, 1601, 1616, 1638, 1653, 1679,
1694, 1716, 1731, 1775, 1790, 1812, 1827, 1853,
1868, 1890, 1905, 1727, 1733, 1742, 1748, 1759,
1765, 1774, 1780, 1800, 1806, 1815, 1821, 1832,
1838, 1847, 1853, 1878, 1884, 1893, 1899, 1910,
1916, 1925, 1931, 1951, 1957, 1966, 1972, 1983,
1989, 1998, 2004, 2027, 2033, 2042, 2048, 2059,
2065, 2074, 2080, 2100, 2106, 2115, 2121, 2132,
2138, 2147, 2153, 2178, 2184, 2193, 2199, 2210,
2216, 2225, 2231, 2251, 2257, 2266, 2272, 2283,
2289, 2298, 2304, 2168, 2174, 2183, 2189, 2200,
2206, 2215, 2221, 2241, 2247, 2256, 2262, 2273,
2279, 2288, 2294, 2319, 2325, 2334, 2340, 2351,
2357, 2366, 2372, 2392, 2398, 2407, 2413, 2424,
2430, 2439, 2445, 2468, 2474, 2483, 2489, 2500,
2506, 2515, 2521, 2541, 2547, 2556, 2562, 2573,
2579, 2588, 2594, 2619, 2625, 2634, 2640, 2651,
2657, 2666, 2672, 2692, 2698, 2707, 2713, 2724,
2730, 2739, 2745, 2540, 2546, 2555, 2561, 2572,
2578, 2587, 2593, 2613, 2619, 2628, 2634, 2645,
2651, 2660, 2666, 2691, 2697, 2706, 2712, 2723,
2729, 2738, 2744, 2764, 2770, 2779, 2785, 2796,
2802, 2811, 2817, 2840, 2846, 2855, 2861, 2872,
2878, 2887, 2893, 2913, 2919, 2928, 2934, 2945,
2951, 2960, 2966, 2991, 2997, 3006, 3012, 3023,
3029, 3038, 3044, 3064, 3070, 3079, 3085, 3096,
3102, 3111, 3117, 2981, 2987, 2996, 3002, 3013,
3019, 3028, 3034, 3054, 3060, 3069, 3075, 3086,
3092, 3101, 3107, 3132, 3138, 3147, 3153, 3164,
3170, 3179, 3185, 3205, 3211, 3220, 3226, 3237,
3243, 3252, 3258, 3281, 3287, 3296, 3302, 3313,
3319, 3328, 3334, 3354, 3360, 3369, 3375, 3386,
3392, 3401, 3407, 3432, 3438, 3447, 3453, 3464,
3470, 3479, 3485, 3505, 3511, 3520, 3526, 3537,
3543, 3552, 3558, 2816, 2822, 2831, 2837, 2848,
2854, 2863, 2869, 2889, 2895, 2904, 2910, 2921,
2927, 2936, 2942, 2967, 2973, 2982, 2988, 2999,
3005, 3014, 3020, 3040, 3046, 3055, 3061, 3072,
3078, 3087, 3093, 3116, 3122, 3131, 3137, 3148,
3154, 3163, 3169, 3189, 3195, 3204, 3210, 3221,
3227, 3236, 3242, 3267, 3273, 3282, 3288, 3299,
3305, 3314, 3320, 3340, 3346, 3355, 3361, 3372,
3378, 3387, 3393, 3257, 3263, 3272, 3278, 3289,
3295, 3304, 3310, 3330, 3336, 3345, 3351, 3362,
3368, 3377, 3383, 3408, 3414, 3423, 3429, 3440,
3446, 3455, 3461, 3481, 3487, 3496, 3502, 3513,
3519, 3528, 3534, 3557, 3563, 3572, 3578, 3589,
3595, 3604, 3610, 3630, 3636, 3645, 3651, 3662,
3668, 3677, 3683, 3708, 3714, 3723, 3729, 3740,
3746, 3755, 3761, 3781, 3787, 3796, 3802, 3813,
3819, 3828, 3834, 3629, 3635, 3644, 3650, 3661,
3667, 3676, 3682, 3702, 3708, 3717, 3723, 3734,
3740, 3749, 3755, 3780, 3786, 3795, 3801, 3812,
3818, 3827, 3833, 3853, 3859, 3868, 3874, 3885,
3891, 3900, 3906, 3929, 3935, 3944, 3950, 3961,
3967, 3976, 3982, 4002, 4008, 4017, 4023, 4034,
4040, 4049, 4055, 4080, 4086, 4095, 4101, 4112,
4118, 4127, 4133, 4153, 4159, 4168, 4174, 4185,
4191, 4200, 4206, 4070, 4076, 4085, 4091, 4102,
4108, 4117, 4123, 4143, 4149, 4158, 4164, 4175,
4181, 4190, 4196, 4221, 4227, 4236, 4242, 4253,
4259, 4268, 4274, 4294, 4300, 4309, 4315, 4326,
4332, 4341, 4347, 4370, 4376, 4385, 4391, 4402,
4408, 4417, 4423, 4443, 4449, 4458, 4464, 4475,
4481, 4490, 4496, 4521, 4527, 4536, 4542, 4553,
4559, 4568, 4574, 4594, 4600, 4609, 4615, 4626,
4632, 4641, 4647, 3515, 3521, 3530, 3536, 3547,
3553, 3562, 3568, 3588, 3594, 3603, 3609, 3620,
3626, 3635, 3641, 3666, 3672, 3681, 3687, 3698,
3704, 3713, 3719, 3739, 3745, 3754, 3760, 3771,
3777, 3786, 3792, 3815, 3821, 3830, 3836, 3847,
3853, 3862, 3868, 3888, 3894, 3903, 3909, 3920,
3926, 3935, 3941, 3966, 3972, 3981, 3987, 3998,
4004, 4013, 4019, 4039, 4045, 4054, 4060, 4071,
4077, 4086, 4092, 3956, 3962, 3971, 3977, 3988,
3994, 4003, 4009, 4029, 4035, 4044, 4050, 4061,
4067, 4076, 4082, 4107, 4113, 4122, 4128, 4139,
4145, 4154, 4160, 4180, 4186, 4195, 4201, 4212,
4218, 4227, 4233, 4256, 4262, 4271, 4277, 4288,
4294, 4303, 4309, 4329, 4335, 4344, 4350, 4361,
4367, 4376, 4382, 4407, 4413, 4422, 4428, 4439,
4445, 4454, 4460, 4480, 4486, 4495, 4501, 4512,
4518, 4527, 4533, 4328, 4334, 4343, 4349, 4360,
4366, 4375, 4381, 4401, 4407, 4416, 4422, 4433,
4439, 4448, 4454, 4479, 4485, 4494, 4500, 4511,
4517, 4526, 4532, 4552, 4558, 4567, 4573, 4584,
4590, 4599, 4605, 4628, 4634, 4643, 4649, 4660,
4666, 4675, 4681, 4701, 4707, 4716, 4722, 4733,
4739, 4748, 4754, 4779, 4785, 4794, 4800, 4811,
4817, 4826, 4832, 4852, 4858, 4867, 4873, 4884,
4890, 4899, 4905, 4769, 4775, 4784, 4790, 4801,
4807, 4816, 4822, 4842, 4848, 4857, 4863, 4874,
4880, 4889, 4895, 4920, 4926, 4935, 4941, 4952,
4958, 4967, 4973, 4993, 4999, 5008, 5014, 5025,
5031, 5040, 5046, 5069, 5075, 5084, 5090, 5101,
5107, 5116, 5122, 5142, 5148, 5157, 5163, 5174,
5180, 5189, 5195, 5220, 5226, 5235, 5241, 5252,
5258, 5267, 5273, 5293, 5299, 5308, 5314, 5325,
5331, 5340, 5346, 4604, 4610, 4619, 4625, 4636,
4642, 4651, 4657, 4677, 4683, 4692, 4698, 4709,
4715, 4724, 4730, 4755, 4761, 4770, 4776, 4787,
4793, 4802, 4808, 4828, 4834, 4843, 4849, 4860,
4866, 4875, 4881, 4904, 4910, 4919, 4925, 4936,
4942, 4951, 4957, 4977, 4983, 4992, 4998, 5009,
5015, 5024, 5030, 5055, 5061, 5070, 5076, 5087,
5093, 5102, 5108, 5128, 5134, 5143, 5149, 5160,
5166, 5175, 5181, 5045, 5051, 5060, 5066, 5077,
5083, 5092, 5098, 5118, 5124, 5133, 5139, 5150,
5156, 5165, 5171, 5196, 5202, 5211, 5217, 5228,
5234, 5243, 5249, 5269, 5275, 5284, 5290, 5301,
5307, 5316, 5322, 5345, 5351, 5360, 5366, 5377,
5383, 5392, 5398, 5418, 5424, 5433, 5439, 5450,
5456, 5465, 5471, 5496, 5502, 5511, 5517, 5528,
5534, 5543, 5549, 5569, 5575, 5584, 5590, 5601,
5607, 5616, 5622, 5417, 5423, 5432, 5438, 5449,
5455, 5464, 5470, 5490, 5496, 5505, 5511, 5522,
5528, 5537, 5543, 5568, 5574, 5583, 5589, 5600,
5606, 5615, 5621, 5641, 5647, 5656, 5662, 5673,
5679, 5688, 5694, 5717, 5723, 5732, 5738, 5749,
5755, 5764, 5770, 5790, 5796, 5805, 5811, 5822,
5828, 5837, 5843, 5868, 5874, 5883, 5889, 5900,
5906, 5915, 5921, 5941, 5947, 5956, 5962, 5973,
5979, 5988, 5994, 5858, 5864, 5873, 5879, 5890,
5896, 5905, 5911, 5931, 5937, 5946, 5952, 5963,
5969, 5978, 5984, 6009, 6015, 6024, 6030, 6041,
6047, 6056, 6062, 6082, 6088, 6097, 6103, 6114,
6120, 6129, 6135, 6158, 6164, 6173, 6179, 6190,
6196, 6205, 6211, 6231, 6237, 6246, 6252, 6263,
6269, 6278, 6284, 6309, 6315, 6324, 6330, 6341,
6347, 6356, 6362, 6382, 6388, 6397, 6403, 6414,
6420, 6429, 6435, 3515, 3521, 3530, 3536, 3547,
3553, 3562, 3568, 3588, 3594, 3603, 3609, 3620,
3626, 3635, 3641, 3666, 3672, 3681, 3687, 3698,
3704, 3713, 3719, 3739, 3745, 3754, 3760, 3771,
3777, 3786, 3792, 3815, 3821, 3830, 3836, 3847,
3853, 3862, 3868, 3888, 3894, 3903, 3909, 3920,
3926, 3935, 3941, 3966, 3972, 3981, 3987, 3998,
4004, 4013, 4019, 4039, 4045, 4054, 4060, 4071,
4077, 4086, 4092, 3956, 3962, 3971, 3977, 3988,
3994, 4003, 4009, 4029, 4035, 4044, 4050, 4061,
4067, 4076, 4082, 4107, 4113, 4122, 4128, 4139,
4145, 4154, 4160, 4180, 4186, 4195, 4201, 4212,
4218, 4227, 4233, 4256, 4262, 4271, 4277, 4288,
4294, 4303, 4309, 4329, 4335, 4344, 4350, 4361,
4367, 4376, 4382, 4407, 4413, 4422, 4428, 4439,
4445, 4454, 4460, 4480, 4486, 4495, 4501, 4512,
4518, 4527, 4533, 4328, 4334, 4343, 4349, 4360,
4366, 4375, 4381, 4401, 4407, 4416, 4422, 4433,
4439, 4448, 4454, 4479, 4485, 4494, 4500, 4511,
4517, 4526, 4532, 4552, 4558, 4567, 4573, 4584,
4590, 4599, 4605, 4628, 4634, 4643, 4649, 4660,
4666, 4675, 4681, 4701, 4707, 4716, 4722, 4733,
4739, 4748, 4754, 4779, 4785, 4794, 4800, 4811,
4817, 4826, 4832, 4852, 4858, 4867, 4873, 4884,
4890, 4899, 4905, 4769, 4775, 4784, 4790, 4801,
4807, 4816, 4822, 4842, 4848, 4857, 4863, 4874,
4880, 4889, 4895, 4920, 4926, 4935, 4941, 4952,
4958, 4967, 4973, 4993, 4999, 5008, 5014, 5025,
5031, 5040, 5046, 5069, 5075, 5084, 5090, 5101,
5107, 5116, 5122, 5142, 5148, 5157, 5163, 5174,
5180, 5189, 5195, 5220, 5226, 5235, 5241, 5252,
5258, 5267, 5273, 5293, 5299, 5308, 5314, 5325,
5331, 5340, 5346, 4604, 4610, 4619, 4625, 4636,
4642, 4651, 4657, 4677, 4683, 4692, 4698, 4709,
4715, 4724, 4730, 4755, 4761, 4770, 4776, 4787,
4793, 4802, 4808, 4828, 4834, 4843, 4849, 4860,
4866, 4875, 4881, 4904, 4910, 4919, 4925, 4936,
4942, 4951, 4957, 4977, 4983, 4992, 4998, 5009,
5015, 5024, 5030, 5055, 5061, 5070, 5076, 5087,
5093, 5102, 5108, 5128, 5134, 5143, 5149, 5160,
5166, 5175, 5181, 5045, 5051, 5060, 5066, 5077,
5083, 5092, 5098, 5118, 5124, 5133, 5139, 5150,
5156, 5165, 5171, 5196, 5202, 5211, 5217, 5228,
5234, 5243, 5249, 5269, 5275, 5284, 5290, 5301,
5307, 5316, 5322, 5345, 5351, 5360, 5366, 5377,
5383, 5392, 5398, 5418, 5424, 5433, 5439, 5450,
5456, 5465, 5471, 5496, 5502, 5511, 5517, 5528,
5534, 5543, 5549, 5569, 5575, 5584, 5590, 5601,
5607, 5616, 5622, 5417, 5423, 5432, 5438, 5449,
5455, 5464, 5470, 5490, 5496, 5505, 5511, 5522,
5528, 5537, 5543, 5568, 5574, 5583, 5589, 5600,
5606, 5615, 5621, 5641, 5647, 5656, 5662, 5673,
5679, 5688, 5694, 5717, 5723, 5732, 5738, 5749,
5755, 5764, 5770, 5790, 5796, 5805, 5811, 5822,
5828, 5837, 5843, 5868, 5874, 5883, 5889, 5900,
5906, 5915, 5921, 5941, 5947, 5956, 5962, 5973,
5979, 5988, 5994, 5858, 5864, 5873, 5879, 5890,
5896, 5905, 5911, 5931, 5937, 5946, 5952, 5963,
5969, 5978, 5984, 6009, 6015, 6024, 6030, 6041,
6047, 6056, 6062, 6082, 6088, 6097, 6103, 6114,
6120, 6129, 6135, 6158, 6164, 6173, 6179, 6190,
6196, 6205, 6211, 6231, 6237, 6246, 6252, 6263,
6269, 6278, 6284, 6309, 6315, 6324, 6330, 6341,
6347, 6356, 6362, 6382, 6388, 6397, 6403, 6414,
6420, 6429, 6435, 5303, 5309, 5318, 5324, 5335,
5341, 5350, 5356, 5376, 5382, 5391, 5397, 5408,
5414, 5423, 5429, 5454, 5460, 5469, 5475, 5486,
5492, 5501, 5507, 5527, 5533, 5542, 5548, 5559,
5565, 5574, 5580, 5603, 5609, 5618, 5624, 5635,
5641, 5650, 5656, 5676, 5682, 5691, 5697, 5708,
5714, 5723, 5729, 5754, 5760, 5769, 5775, 5786,
5792, 5801, 5807, 5827, 5833, 5842, 5848, 5859,
5865, 5874, 5880, 5744, 5750, 5759, 5765, 5776,
5782, 5791, 5797, 5817, 5823, 5832, 5838, 5849,
5855, 5864, 5870, 5895, 5901, 5910, 5916, 5927,
5933, 5942, 5948, 5968, 5974, 5983, 5989, 6000,
6006, 6015, 6021, 6044, 6050, 6059, 6065, 6076,
6082, 6091, 6097, 6117, 6123, 6132, 6138, 6149,
6155, 6164, 6170, 6195, 6201, 6210, 6216, 6227,
6233, 6242, 6248, 6268, 6274, 6283, 6289, 6300,
6306, 6315, 6321, 6116, 6122, 6131, 6137, 6148,
6154, 6163, 6169, 6189, 6195, 6204, 6210, 6221,
6227, 6236, 6242, 6267, 6273, 6282, 6288, 6299,
6305, 6314, 6320, 6340, 6346, 6355, 6361, 6372,
6378, 6387, 6393, 6416, 6422, 6431, 6437, 6448,
6454, 6463, 6469, 6489, 6495, 6504, 6510, 6521,
6527, 6536, 6542, 6567, 6573, 6582, 6588, 6599,
6605, 6614, 6620, 6640, 6646, 6655, 6661, 6672,
6678, 6687, 6693, 6557, 6563, 6572, 6578, 6589,
6595, 6604, 6610, 6630, 6636, 6645, 6651, 6662,
6668, 6677, 6683, 6708, 6714, 6723, 6729, 6740,
6746, 6755, 6761, 6781, 6787, 6796, 6802, 6813,
6819, 6828, 6834, 6857, 6863, 6872, 6878, 6889,
6895, 6904, 6910, 6930, 6936, 6945, 6951, 6962,
6968, 6977, 6983, 7008, 7014, 7023, 7029, 7040,
7046, 7055, 7061, 7081, 7087, 7096, 7102, 7113,
7119, 7128, 7134, 6392, 6398, 6407, 6413, 6424,
6430, 6439, 6445, 6465, 6471, 6480, 6486, 6497,
6503, 6512, 6518, 6543, 6549, 6558, 6564, 6575,
6581, 6590, 6596, 6616, 6622, 6631, 6637, 6648,
6654, 6663, 6669, 6692, 6698, 6707, 6713, 6724,
6730, 6739, 6745, 6765, 6771, 6780, 6786, 6797,
6803, 6812, 6818, 6843, 6849, 6858, 6864, 6875,
6881, 6890, 6896, 6916, 6922, 6931, 6937, 6948,
6954, 6963, 6969, 6833, 6839, 6848, 6854, 6865,
6871, 6880, 6886, 6906, 6912, 6921, 6927, 6938,
6944, 6953, 6959, 6984, 6990, 6999, 7005, 7016,
7022, 7031, 7037, 7057, 7063, 7072, 7078, 7089,
7095, 7104, 7110, 7133, 7139, 7148, 7154, 7165,
7171, 7180, 7186, 7206, 7212, 7221, 7227, 7238,
7244, 7253, 7259, 7284, 7290, 7299, 7305, 7316,
7322, 7331, 7337, 7357, 7363, 7372, 7378, 7389,
7395, 7404, 7410, 7205, 7211, 7220, 7226, 7237,
7243, 7252, 7258, 7278, 7284, 7293, 7299, 7310,
7316, 7325, 7331, 7356, 7362, 7371, 7377, 7388,
7394, 7403, 7409, 7429, 7435, 7444, 7450, 7461,
7467, 7476, 7482, 7505, 7511, 7520, 7526, 7537,
7543, 7552, 7558, 7578, 7584, 7593, 7599, 7610,
7616, 7625, 7631, 7656, 7662, 7671, 7677, 7688,
7694, 7703, 7709, 7729, 7735, 7744, 7750, 7761
};
static int VariableLevelCost(int level, const uint8_t probas[NUM_PROBAS]) {
int pattern = VP8LevelCodes[level - 1][0];
int bits = VP8LevelCodes[level - 1][1];
int cost = 0;
int i;
for (i = 2; pattern; ++i) {
if (pattern & 1) {
cost += VP8BitCost(bits & 1, probas[i]);
}
bits >>= 1;
pattern >>= 1;
}
return cost;
}
//------------------------------------------------------------------------------
// Pre-calc level costs once for all
void VP8CalculateLevelCosts(VP8Proba* const proba) {
int ctype, band, ctx;
if (!proba->dirty_) return; // nothing to do.
for (ctype = 0; ctype < NUM_TYPES; ++ctype) {
for (band = 0; band < NUM_BANDS; ++band) {
for (ctx = 0; ctx < NUM_CTX; ++ctx) {
const uint8_t* const p = proba->coeffs_[ctype][band][ctx];
uint16_t* const table = proba->level_cost_[ctype][band][ctx];
const int cost0 = (ctx > 0) ? VP8BitCost(1, p[0]) : 0;
const int cost_base = VP8BitCost(1, p[1]) + cost0;
int v;
table[0] = VP8BitCost(0, p[1]) + cost0;
for (v = 1; v <= MAX_VARIABLE_LEVEL; ++v) {
table[v] = cost_base + VariableLevelCost(v, p);
}
// Starting at level 67 and up, the variable part of the cost is
// actually constant.
}
}
}
proba->dirty_ = 0;
}
//------------------------------------------------------------------------------
// Mode cost tables.
// These are the fixed probabilities (in the coding trees) turned into bit-cost
// by calling VP8BitCost().
const uint16_t VP8FixedCostsUV[4] = { 302, 984, 439, 642 };
// note: these values include the fixed VP8BitCost(1, 145) mode selection cost.
const uint16_t VP8FixedCostsI16[4] = { 663, 919, 872, 919 };
const uint16_t VP8FixedCostsI4[NUM_BMODES][NUM_BMODES][NUM_BMODES] = {
{ { 40, 1151, 1723, 1874, 2103, 2019, 1628, 1777, 2226, 2137 },
{ 192, 469, 1296, 1308, 1849, 1794, 1781, 1703, 1713, 1522 },
{ 142, 910, 762, 1684, 1849, 1576, 1460, 1305, 1801, 1657 },
{ 559, 641, 1370, 421, 1182, 1569, 1612, 1725, 863, 1007 },
{ 299, 1059, 1256, 1108, 636, 1068, 1581, 1883, 869, 1142 },
{ 277, 1111, 707, 1362, 1089, 672, 1603, 1541, 1545, 1291 },
{ 214, 781, 1609, 1303, 1632, 2229, 726, 1560, 1713, 918 },
{ 152, 1037, 1046, 1759, 1983, 2174, 1358, 742, 1740, 1390 },
{ 512, 1046, 1420, 753, 752, 1297, 1486, 1613, 460, 1207 },
{ 424, 827, 1362, 719, 1462, 1202, 1199, 1476, 1199, 538 } },
{ { 240, 402, 1134, 1491, 1659, 1505, 1517, 1555, 1979, 2099 },
{ 467, 242, 960, 1232, 1714, 1620, 1834, 1570, 1676, 1391 },
{ 500, 455, 463, 1507, 1699, 1282, 1564, 982, 2114, 2114 },
{ 672, 643, 1372, 331, 1589, 1667, 1453, 1938, 996, 876 },
{ 458, 783, 1037, 911, 738, 968, 1165, 1518, 859, 1033 },
{ 504, 815, 504, 1139, 1219, 719, 1506, 1085, 1268, 1268 },
{ 333, 630, 1445, 1239, 1883, 3672, 799, 1548, 1865, 598 },
{ 399, 644, 746, 1342, 1856, 1350, 1493, 613, 1855, 1015 },
{ 622, 749, 1205, 608, 1066, 1408, 1290, 1406, 546, 971 },
{ 500, 753, 1041, 668, 1230, 1617, 1297, 1425, 1383, 523 } },
{ { 394, 553, 523, 1502, 1536, 981, 1608, 1142, 1666, 2181 },
{ 655, 430, 375, 1411, 1861, 1220, 1677, 1135, 1978, 1553 },
{ 690, 640, 245, 1954, 2070, 1194, 1528, 982, 1972, 2232 },
{ 559, 834, 741, 867, 1131, 980, 1225, 852, 1092, 784 },
{ 690, 875, 516, 959, 673, 894, 1056, 1190, 1528, 1126 },
{ 740, 951, 384, 1277, 1177, 492, 1579, 1155, 1846, 1513 },
{ 323, 775, 1062, 1776, 3062, 1274, 813, 1188, 1372, 655 },
{ 488, 971, 484, 1767, 1515, 1775, 1115, 503, 1539, 1461 },
{ 740, 1006, 998, 709, 851, 1230, 1337, 788, 741, 721 },
{ 522, 1073, 573, 1045, 1346, 887, 1046, 1146, 1203, 697 } },
{ { 105, 864, 1442, 1009, 1934, 1840, 1519, 1920, 1673, 1579 },
{ 534, 305, 1193, 683, 1388, 2164, 1802, 1894, 1264, 1170 },
{ 305, 518, 877, 1108, 1426, 3215, 1425, 1064, 1320, 1242 },
{ 683, 732, 1927, 257, 1493, 2048, 1858, 1552, 1055, 947 },
{ 394, 814, 1024, 660, 959, 1556, 1282, 1289, 893, 1047 },
{ 528, 615, 996, 940, 1201, 635, 1094, 2515, 803, 1358 },
{ 347, 614, 1609, 1187, 3133, 1345, 1007, 1339, 1017, 667 },
{ 218, 740, 878, 1605, 3650, 3650, 1345, 758, 1357, 1617 },
{ 672, 750, 1541, 558, 1257, 1599, 1870, 2135, 402, 1087 },
{ 592, 684, 1161, 430, 1092, 1497, 1475, 1489, 1095, 822 } },
{ { 228, 1056, 1059, 1368, 752, 982, 1512, 1518, 987, 1782 },
{ 494, 514, 818, 942, 965, 892, 1610, 1356, 1048, 1363 },
{ 512, 648, 591, 1042, 761, 991, 1196, 1454, 1309, 1463 },
{ 683, 749, 1043, 676, 841, 1396, 1133, 1138, 654, 939 },
{ 622, 1101, 1126, 994, 361, 1077, 1203, 1318, 877, 1219 },
{ 631, 1068, 857, 1650, 651, 477, 1650, 1419, 828, 1170 },
{ 555, 727, 1068, 1335, 3127, 1339, 820, 1331, 1077, 429 },
{ 504, 879, 624, 1398, 889, 889, 1392, 808, 891, 1406 },
{ 683, 1602, 1289, 977, 578, 983, 1280, 1708, 406, 1122 },
{ 399, 865, 1433, 1070, 1072, 764, 968, 1477, 1223, 678 } },
{ { 333, 760, 935, 1638, 1010, 529, 1646, 1410, 1472, 2219 },
{ 512, 494, 750, 1160, 1215, 610, 1870, 1868, 1628, 1169 },
{ 572, 646, 492, 1934, 1208, 603, 1580, 1099, 1398, 1995 },
{ 786, 789, 942, 581, 1018, 951, 1599, 1207, 731, 768 },
{ 690, 1015, 672, 1078, 582, 504, 1693, 1438, 1108, 2897 },
{ 768, 1267, 571, 2005, 1243, 244, 2881, 1380, 1786, 1453 },
{ 452, 899, 1293, 903, 1311, 3100, 465, 1311, 1319, 813 },
{ 394, 927, 942, 1103, 1358, 1104, 946, 593, 1363, 1109 },
{ 559, 1005, 1007, 1016, 658, 1173, 1021, 1164, 623, 1028 },
{ 564, 796, 632, 1005, 1014, 863, 2316, 1268, 938, 764 } },
{ { 266, 606, 1098, 1228, 1497, 1243, 948, 1030, 1734, 1461 },
{ 366, 585, 901, 1060, 1407, 1247, 876, 1134, 1620, 1054 },
{ 452, 565, 542, 1729, 1479, 1479, 1016, 886, 2938, 1150 },
{ 555, 1088, 1533, 950, 1354, 895, 834, 1019, 1021, 496 },
{ 704, 815, 1193, 971, 973, 640, 1217, 2214, 832, 578 },
{ 672, 1245, 579, 871, 875, 774, 872, 1273, 1027, 949 },
{ 296, 1134, 2050, 1784, 1636, 3425, 442, 1550, 2076, 722 },
{ 342, 982, 1259, 1846, 1848, 1848, 622, 568, 1847, 1052 },
{ 555, 1064, 1304, 828, 746, 1343, 1075, 1329, 1078, 494 },
{ 288, 1167, 1285, 1174, 1639, 1639, 833, 2254, 1304, 509 } },
{ { 342, 719, 767, 1866, 1757, 1270, 1246, 550, 1746, 2151 },
{ 483, 653, 694, 1509, 1459, 1410, 1218, 507, 1914, 1266 },
{ 488, 757, 447, 2979, 1813, 1268, 1654, 539, 1849, 2109 },
{ 522, 1097, 1085, 851, 1365, 1111, 851, 901, 961, 605 },
{ 709, 716, 841, 728, 736, 945, 941, 862, 2845, 1057 },
{ 512, 1323, 500, 1336, 1083, 681, 1342, 717, 1604, 1350 },
{ 452, 1155, 1372, 1900, 1501, 3290, 311, 944, 1919, 922 },
{ 403, 1520, 977, 2132, 1733, 3522, 1076, 276, 3335, 1547 },
{ 559, 1374, 1101, 615, 673, 2462, 974, 795, 984, 984 },
{ 547, 1122, 1062, 812, 1410, 951, 1140, 622, 1268, 651 } },
{ { 165, 982, 1235, 938, 1334, 1366, 1659, 1578, 964, 1612 },
{ 592, 422, 925, 847, 1139, 1112, 1387, 2036, 861, 1041 },
{ 403, 837, 732, 770, 941, 1658, 1250, 809, 1407, 1407 },
{ 896, 874, 1071, 381, 1568, 1722, 1437, 2192, 480, 1035 },
{ 640, 1098, 1012, 1032, 684, 1382, 1581, 2106, 416, 865 },
{ 559, 1005, 819, 914, 710, 770, 1418, 920, 838, 1435 },
{ 415, 1258, 1245, 870, 1278, 3067, 770, 1021, 1287, 522 },
{ 406, 990, 601, 1009, 1265, 1265, 1267, 759, 1017, 1277 },
{ 968, 1182, 1329, 788, 1032, 1292, 1705, 1714, 203, 1403 },
{ 732, 877, 1279, 471, 901, 1161, 1545, 1294, 755, 755 } },
{ { 111, 931, 1378, 1185, 1933, 1648, 1148, 1714, 1873, 1307 },
{ 406, 414, 1030, 1023, 1910, 1404, 1313, 1647, 1509, 793 },
{ 342, 640, 575, 1088, 1241, 1349, 1161, 1350, 1756, 1502 },
{ 559, 766, 1185, 357, 1682, 1428, 1329, 1897, 1219, 802 },
{ 473, 909, 1164, 771, 719, 2508, 1427, 1432, 722, 782 },
{ 342, 892, 785, 1145, 1150, 794, 1296, 1550, 973, 1057 },
{ 208, 1036, 1326, 1343, 1606, 3395, 815, 1455, 1618, 712 },
{ 228, 928, 890, 1046, 3499, 1711, 994, 829, 1720, 1318 },
{ 768, 724, 1058, 636, 991, 1075, 1319, 1324, 616, 825 },
{ 305, 1167, 1358, 899, 1587, 1587, 987, 1988, 1332, 501 } }
};
//------------------------------------------------------------------------------
// Mode costs
static int GetResidualCost(int ctx0, const VP8Residual* const res) {
int n = res->first;
// should be prob[VP8EncBands[n]], but it's equivalent for n=0 or 1
const int p0 = res->prob[n][ctx0][0];
const uint16_t* t = res->cost[n][ctx0];
// bit_cost(1, p0) is already incorporated in t[] tables, but only if ctx != 0
// (as required by the syntax). For ctx0 == 0, we need to add it here or it'll
// be missing during the loop.
int cost = (ctx0 == 0) ? VP8BitCost(1, p0) : 0;
if (res->last < 0) {
return VP8BitCost(0, p0);
}
for (; n < res->last; ++n) {
const int v = abs(res->coeffs[n]);
const int b = VP8EncBands[n + 1];
const int ctx = (v >= 2) ? 2 : v;
cost += VP8LevelCost(t, v);
t = res->cost[b][ctx];
}
// Last coefficient is always non-zero
{
const int v = abs(res->coeffs[n]);
assert(v != 0);
cost += VP8LevelCost(t, v);
if (n < 15) {
const int b = VP8EncBands[n + 1];
const int ctx = (v == 1) ? 1 : 2;
const int last_p0 = res->prob[b][ctx][0];
cost += VP8BitCost(0, last_p0);
}
}
return cost;
}
//------------------------------------------------------------------------------
// init function
#if defined(WEBP_USE_MIPS32)
extern int VP8GetResidualCostMIPS32(int ctx0, const VP8Residual* const res);
#endif // WEBP_USE_MIPS32
// TODO(skal): this, and GetResidualCost(), should probably go somewhere
// under src/dsp/ at some point.
VP8GetResidualCostFunc VP8GetResidualCost;
void VP8GetResidualCostInit(void) {
VP8GetResidualCost = GetResidualCost;
if (VP8GetCPUInfo != NULL) {
#if defined(WEBP_USE_MIPS32)
if (VP8GetCPUInfo(kMIPS32)) {
VP8GetResidualCost = VP8GetResidualCostMIPS32;
}
#endif
}
}
//------------------------------------------------------------------------------
// helper functions for residuals struct VP8Residual.
void VP8InitResidual(int first, int coeff_type,
VP8Encoder* const enc, VP8Residual* const res) {
res->coeff_type = coeff_type;
res->prob = enc->proba_.coeffs_[coeff_type];
res->stats = enc->proba_.stats_[coeff_type];
res->cost = enc->proba_.level_cost_[coeff_type];
res->first = first;
}
static void SetResidualCoeffs(const int16_t* const coeffs,
VP8Residual* const res) {
int n;
res->last = -1;
assert(res->first == 0 || coeffs[0] == 0);
for (n = 15; n >= 0; --n) {
if (coeffs[n]) {
res->last = n;
break;
}
}
res->coeffs = coeffs;
}
//------------------------------------------------------------------------------
// init function
#if defined(WEBP_USE_SSE2)
extern void VP8SetResidualCoeffsSSE2(const int16_t* const coeffs,
VP8Residual* const res);
#endif // WEBP_USE_SSE2
VP8SetResidualCoeffsFunc VP8SetResidualCoeffs;
void VP8SetResidualCoeffsInit(void) {
VP8SetResidualCoeffs = SetResidualCoeffs;
if (VP8GetCPUInfo != NULL) {
#if defined(WEBP_USE_SSE2)
if (VP8GetCPUInfo(kSSE2)) {
VP8SetResidualCoeffs = VP8SetResidualCoeffsSSE2;
}
#endif
}
}
//------------------------------------------------------------------------------
// Mode costs
int VP8GetCostLuma4(VP8EncIterator* const it, const int16_t levels[16]) {
const int x = (it->i4_ & 3), y = (it->i4_ >> 2);
VP8Residual res;
VP8Encoder* const enc = it->enc_;
int R = 0;
int ctx;
VP8InitResidual(0, 3, enc, &res);
ctx = it->top_nz_[x] + it->left_nz_[y];
VP8SetResidualCoeffs(levels, &res);
R += VP8GetResidualCost(ctx, &res);
return R;
}
int VP8GetCostLuma16(VP8EncIterator* const it, const VP8ModeScore* const rd) {
VP8Residual res;
VP8Encoder* const enc = it->enc_;
int x, y;
int R = 0;
VP8IteratorNzToBytes(it); // re-import the non-zero context
// DC
VP8InitResidual(0, 1, enc, &res);
VP8SetResidualCoeffs(rd->y_dc_levels, &res);
R += VP8GetResidualCost(it->top_nz_[8] + it->left_nz_[8], &res);
// AC
VP8InitResidual(1, 0, enc, &res);
for (y = 0; y < 4; ++y) {
for (x = 0; x < 4; ++x) {
const int ctx = it->top_nz_[x] + it->left_nz_[y];
VP8SetResidualCoeffs(rd->y_ac_levels[x + y * 4], &res);
R += VP8GetResidualCost(ctx, &res);
it->top_nz_[x] = it->left_nz_[y] = (res.last >= 0);
}
}
return R;
}
int VP8GetCostUV(VP8EncIterator* const it, const VP8ModeScore* const rd) {
VP8Residual res;
VP8Encoder* const enc = it->enc_;
int ch, x, y;
int R = 0;
VP8IteratorNzToBytes(it); // re-import the non-zero context
VP8InitResidual(0, 2, enc, &res);
for (ch = 0; ch <= 2; ch += 2) {
for (y = 0; y < 2; ++y) {
for (x = 0; x < 2; ++x) {
const int ctx = it->top_nz_[4 + ch + x] + it->left_nz_[4 + ch + y];
VP8SetResidualCoeffs(rd->uv_levels[ch * 2 + x + y * 2], &res);
R += VP8GetResidualCost(ctx, &res);
it->top_nz_[4 + ch + x] = it->left_nz_[4 + ch + y] = (res.last >= 0);
}
}
}
return R;
}
//------------------------------------------------------------------------------
// Recording of token probabilities.
// Record proba context used
static int Record(int bit, proba_t* const stats) {
proba_t p = *stats;
if (p >= 0xffff0000u) { // an overflow is inbound.
p = ((p + 1u) >> 1) & 0x7fff7fffu; // -> divide the stats by 2.
}
// record bit count (lower 16 bits) and increment total count (upper 16 bits).
p += 0x00010000u + bit;
*stats = p;
return bit;
}
// We keep the table-free variant around for reference, in case.
#define USE_LEVEL_CODE_TABLE
// Simulate block coding, but only record statistics.
// Note: no need to record the fixed probas.
int VP8RecordCoeffs(int ctx, const VP8Residual* const res) {
int n = res->first;
// should be stats[VP8EncBands[n]], but it's equivalent for n=0 or 1
proba_t* s = res->stats[n][ctx];
if (res->last < 0) {
Record(0, s + 0);
return 0;
}
while (n <= res->last) {
int v;
Record(1, s + 0); // order of record doesn't matter
while ((v = res->coeffs[n++]) == 0) {
Record(0, s + 1);
s = res->stats[VP8EncBands[n]][0];
}
Record(1, s + 1);
if (!Record(2u < (unsigned int)(v + 1), s + 2)) { // v = -1 or 1
s = res->stats[VP8EncBands[n]][1];
} else {
v = abs(v);
#if !defined(USE_LEVEL_CODE_TABLE)
if (!Record(v > 4, s + 3)) {
if (Record(v != 2, s + 4))
Record(v == 4, s + 5);
} else if (!Record(v > 10, s + 6)) {
Record(v > 6, s + 7);
} else if (!Record((v >= 3 + (8 << 2)), s + 8)) {
Record((v >= 3 + (8 << 1)), s + 9);
} else {
Record((v >= 3 + (8 << 3)), s + 10);
}
#else
if (v > MAX_VARIABLE_LEVEL) {
v = MAX_VARIABLE_LEVEL;
}
{
const int bits = VP8LevelCodes[v - 1][1];
int pattern = VP8LevelCodes[v - 1][0];
int i;
for (i = 0; (pattern >>= 1) != 0; ++i) {
const int mask = 2 << i;
if (pattern & 1) Record(!!(bits & mask), s + 3 + i);
}
}
#endif
s = res->stats[VP8EncBands[n]][2];
}
}
if (n < 16) Record(0, s + 0);
return 1;
}
//------------------------------------------------------------------------------
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