diff options
Diffstat (limited to 'drivers/webp/enc/cost.c')
| -rw-r--r-- | drivers/webp/enc/cost.c | 672 |
1 files changed, 266 insertions, 406 deletions
diff --git a/drivers/webp/enc/cost.c b/drivers/webp/enc/cost.c index 92e0cc713c..ae7fe01388 100644 --- a/drivers/webp/enc/cost.c +++ b/drivers/webp/enc/cost.c @@ -1,8 +1,10 @@ // Copyright 2011 Google Inc. All Rights Reserved. // -// This code is licensed under the same terms as WebM: -// Software License Agreement: http://www.webmproject.org/license/software/ -// Additional IP Rights Grant: http://www.webmproject.org/license/additional/ +// 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 @@ -11,42 +13,6 @@ #include "./cost.h" -#if defined(__cplusplus) || defined(c_plusplus) -extern "C" { -#endif - -//------------------------------------------------------------------------------ -// 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 @@ -73,267 +39,6 @@ const uint16_t VP8LevelCodes[MAX_VARIABLE_LEVEL][2] = { {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[2048] = { - 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]; @@ -352,19 +57,21 @@ static int VariableLevelCost(int level, const uint8_t probas[NUM_PROBAS]) { //------------------------------------------------------------------------------ // Pre-calc level costs once for all -void VP8CalculateLevelCosts(VP8Proba* const proba) { +void VP8CalculateLevelCosts(VP8EncProba* const proba) { int ctype, band, ctx; if (!proba->dirty_) return; // nothing to do. for (ctype = 0; ctype < NUM_TYPES; ++ctype) { + int n; for (band = 0; band < NUM_BANDS; ++band) { - for(ctx = 0; ctx < NUM_CTX; ++ctx) { + 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 cost_base = VP8BitCost(1, p[1]); + 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]); + table[0] = VP8BitCost(0, p[1]) + cost0; for (v = 1; v <= MAX_VARIABLE_LEVEL; ++v) { table[v] = cost_base + VariableLevelCost(v, p); } @@ -372,6 +79,12 @@ void VP8CalculateLevelCosts(VP8Proba* const proba) { // actually constant. } } + for (n = 0; n < 16; ++n) { // replicate bands. We don't need to sentinel. + for (ctx = 0; ctx < NUM_CTX; ++ctx) { + proba->remapped_costs_[ctype][n][ctx] = + proba->level_cost_[ctype][VP8EncBands[n]][ctx]; + } + } } proba->dirty_ = 0; } @@ -385,110 +98,257 @@ 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] = { - { { 251, 1362, 1934, 2085, 2314, 2230, 1839, 1988, 2437, 2348 }, - { 403, 680, 1507, 1519, 2060, 2005, 1992, 1914, 1924, 1733 }, - { 353, 1121, 973, 1895, 2060, 1787, 1671, 1516, 2012, 1868 }, - { 770, 852, 1581, 632, 1393, 1780, 1823, 1936, 1074, 1218 }, - { 510, 1270, 1467, 1319, 847, 1279, 1792, 2094, 1080, 1353 }, - { 488, 1322, 918, 1573, 1300, 883, 1814, 1752, 1756, 1502 }, - { 425, 992, 1820, 1514, 1843, 2440, 937, 1771, 1924, 1129 }, - { 363, 1248, 1257, 1970, 2194, 2385, 1569, 953, 1951, 1601 }, - { 723, 1257, 1631, 964, 963, 1508, 1697, 1824, 671, 1418 }, - { 635, 1038, 1573, 930, 1673, 1413, 1410, 1687, 1410, 749 } }, - { { 451, 613, 1345, 1702, 1870, 1716, 1728, 1766, 2190, 2310 }, - { 678, 453, 1171, 1443, 1925, 1831, 2045, 1781, 1887, 1602 }, - { 711, 666, 674, 1718, 1910, 1493, 1775, 1193, 2325, 2325 }, - { 883, 854, 1583, 542, 1800, 1878, 1664, 2149, 1207, 1087 }, - { 669, 994, 1248, 1122, 949, 1179, 1376, 1729, 1070, 1244 }, - { 715, 1026, 715, 1350, 1430, 930, 1717, 1296, 1479, 1479 }, - { 544, 841, 1656, 1450, 2094, 3883, 1010, 1759, 2076, 809 }, - { 610, 855, 957, 1553, 2067, 1561, 1704, 824, 2066, 1226 }, - { 833, 960, 1416, 819, 1277, 1619, 1501, 1617, 757, 1182 }, - { 711, 964, 1252, 879, 1441, 1828, 1508, 1636, 1594, 734 } }, - { { 605, 764, 734, 1713, 1747, 1192, 1819, 1353, 1877, 2392 }, - { 866, 641, 586, 1622, 2072, 1431, 1888, 1346, 2189, 1764 }, - { 901, 851, 456, 2165, 2281, 1405, 1739, 1193, 2183, 2443 }, - { 770, 1045, 952, 1078, 1342, 1191, 1436, 1063, 1303, 995 }, - { 901, 1086, 727, 1170, 884, 1105, 1267, 1401, 1739, 1337 }, - { 951, 1162, 595, 1488, 1388, 703, 1790, 1366, 2057, 1724 }, - { 534, 986, 1273, 1987, 3273, 1485, 1024, 1399, 1583, 866 }, - { 699, 1182, 695, 1978, 1726, 1986, 1326, 714, 1750, 1672 }, - { 951, 1217, 1209, 920, 1062, 1441, 1548, 999, 952, 932 }, - { 733, 1284, 784, 1256, 1557, 1098, 1257, 1357, 1414, 908 } }, - { { 316, 1075, 1653, 1220, 2145, 2051, 1730, 2131, 1884, 1790 }, - { 745, 516, 1404, 894, 1599, 2375, 2013, 2105, 1475, 1381 }, - { 516, 729, 1088, 1319, 1637, 3426, 1636, 1275, 1531, 1453 }, - { 894, 943, 2138, 468, 1704, 2259, 2069, 1763, 1266, 1158 }, - { 605, 1025, 1235, 871, 1170, 1767, 1493, 1500, 1104, 1258 }, - { 739, 826, 1207, 1151, 1412, 846, 1305, 2726, 1014, 1569 }, - { 558, 825, 1820, 1398, 3344, 1556, 1218, 1550, 1228, 878 }, - { 429, 951, 1089, 1816, 3861, 3861, 1556, 969, 1568, 1828 }, - { 883, 961, 1752, 769, 1468, 1810, 2081, 2346, 613, 1298 }, - { 803, 895, 1372, 641, 1303, 1708, 1686, 1700, 1306, 1033 } }, - { { 439, 1267, 1270, 1579, 963, 1193, 1723, 1729, 1198, 1993 }, - { 705, 725, 1029, 1153, 1176, 1103, 1821, 1567, 1259, 1574 }, - { 723, 859, 802, 1253, 972, 1202, 1407, 1665, 1520, 1674 }, - { 894, 960, 1254, 887, 1052, 1607, 1344, 1349, 865, 1150 }, - { 833, 1312, 1337, 1205, 572, 1288, 1414, 1529, 1088, 1430 }, - { 842, 1279, 1068, 1861, 862, 688, 1861, 1630, 1039, 1381 }, - { 766, 938, 1279, 1546, 3338, 1550, 1031, 1542, 1288, 640 }, - { 715, 1090, 835, 1609, 1100, 1100, 1603, 1019, 1102, 1617 }, - { 894, 1813, 1500, 1188, 789, 1194, 1491, 1919, 617, 1333 }, - { 610, 1076, 1644, 1281, 1283, 975, 1179, 1688, 1434, 889 } }, - { { 544, 971, 1146, 1849, 1221, 740, 1857, 1621, 1683, 2430 }, - { 723, 705, 961, 1371, 1426, 821, 2081, 2079, 1839, 1380 }, - { 783, 857, 703, 2145, 1419, 814, 1791, 1310, 1609, 2206 }, - { 997, 1000, 1153, 792, 1229, 1162, 1810, 1418, 942, 979 }, - { 901, 1226, 883, 1289, 793, 715, 1904, 1649, 1319, 3108 }, - { 979, 1478, 782, 2216, 1454, 455, 3092, 1591, 1997, 1664 }, - { 663, 1110, 1504, 1114, 1522, 3311, 676, 1522, 1530, 1024 }, - { 605, 1138, 1153, 1314, 1569, 1315, 1157, 804, 1574, 1320 }, - { 770, 1216, 1218, 1227, 869, 1384, 1232, 1375, 834, 1239 }, - { 775, 1007, 843, 1216, 1225, 1074, 2527, 1479, 1149, 975 } }, - { { 477, 817, 1309, 1439, 1708, 1454, 1159, 1241, 1945, 1672 }, - { 577, 796, 1112, 1271, 1618, 1458, 1087, 1345, 1831, 1265 }, - { 663, 776, 753, 1940, 1690, 1690, 1227, 1097, 3149, 1361 }, - { 766, 1299, 1744, 1161, 1565, 1106, 1045, 1230, 1232, 707 }, - { 915, 1026, 1404, 1182, 1184, 851, 1428, 2425, 1043, 789 }, - { 883, 1456, 790, 1082, 1086, 985, 1083, 1484, 1238, 1160 }, - { 507, 1345, 2261, 1995, 1847, 3636, 653, 1761, 2287, 933 }, - { 553, 1193, 1470, 2057, 2059, 2059, 833, 779, 2058, 1263 }, - { 766, 1275, 1515, 1039, 957, 1554, 1286, 1540, 1289, 705 }, - { 499, 1378, 1496, 1385, 1850, 1850, 1044, 2465, 1515, 720 } }, - { { 553, 930, 978, 2077, 1968, 1481, 1457, 761, 1957, 2362 }, - { 694, 864, 905, 1720, 1670, 1621, 1429, 718, 2125, 1477 }, - { 699, 968, 658, 3190, 2024, 1479, 1865, 750, 2060, 2320 }, - { 733, 1308, 1296, 1062, 1576, 1322, 1062, 1112, 1172, 816 }, - { 920, 927, 1052, 939, 947, 1156, 1152, 1073, 3056, 1268 }, - { 723, 1534, 711, 1547, 1294, 892, 1553, 928, 1815, 1561 }, - { 663, 1366, 1583, 2111, 1712, 3501, 522, 1155, 2130, 1133 }, - { 614, 1731, 1188, 2343, 1944, 3733, 1287, 487, 3546, 1758 }, - { 770, 1585, 1312, 826, 884, 2673, 1185, 1006, 1195, 1195 }, - { 758, 1333, 1273, 1023, 1621, 1162, 1351, 833, 1479, 862 } }, - { { 376, 1193, 1446, 1149, 1545, 1577, 1870, 1789, 1175, 1823 }, - { 803, 633, 1136, 1058, 1350, 1323, 1598, 2247, 1072, 1252 }, - { 614, 1048, 943, 981, 1152, 1869, 1461, 1020, 1618, 1618 }, - { 1107, 1085, 1282, 592, 1779, 1933, 1648, 2403, 691, 1246 }, - { 851, 1309, 1223, 1243, 895, 1593, 1792, 2317, 627, 1076 }, - { 770, 1216, 1030, 1125, 921, 981, 1629, 1131, 1049, 1646 }, - { 626, 1469, 1456, 1081, 1489, 3278, 981, 1232, 1498, 733 }, - { 617, 1201, 812, 1220, 1476, 1476, 1478, 970, 1228, 1488 }, - { 1179, 1393, 1540, 999, 1243, 1503, 1916, 1925, 414, 1614 }, - { 943, 1088, 1490, 682, 1112, 1372, 1756, 1505, 966, 966 } }, - { { 322, 1142, 1589, 1396, 2144, 1859, 1359, 1925, 2084, 1518 }, - { 617, 625, 1241, 1234, 2121, 1615, 1524, 1858, 1720, 1004 }, - { 553, 851, 786, 1299, 1452, 1560, 1372, 1561, 1967, 1713 }, - { 770, 977, 1396, 568, 1893, 1639, 1540, 2108, 1430, 1013 }, - { 684, 1120, 1375, 982, 930, 2719, 1638, 1643, 933, 993 }, - { 553, 1103, 996, 1356, 1361, 1005, 1507, 1761, 1184, 1268 }, - { 419, 1247, 1537, 1554, 1817, 3606, 1026, 1666, 1829, 923 }, - { 439, 1139, 1101, 1257, 3710, 1922, 1205, 1040, 1931, 1529 }, - { 979, 935, 1269, 847, 1202, 1286, 1530, 1535, 827, 1036 }, - { 516, 1378, 1569, 1110, 1798, 1798, 1198, 2199, 1543, 712 } }, + { { 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 } } }; //------------------------------------------------------------------------------ +// 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->costs = enc->proba_.remapped_costs_[coeff_type]; + res->first = first; +} + +//------------------------------------------------------------------------------ +// 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 -#if defined(__cplusplus) || defined(c_plusplus) -} // extern "C" +// 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; +} + +//------------------------------------------------------------------------------ |