1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libvpx/vp9/common/vp9_entropy.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,424 @@
1.4 +/*
1.5 + * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license
1.8 + * that can be found in the LICENSE file in the root of the source
1.9 + * tree. An additional intellectual property rights grant can be found
1.10 + * in the file PATENTS. All contributing project authors may
1.11 + * be found in the AUTHORS file in the root of the source tree.
1.12 + */
1.13 +
1.14 +#include "vp9/common/vp9_entropy.h"
1.15 +#include "vp9/common/vp9_blockd.h"
1.16 +#include "vp9/common/vp9_onyxc_int.h"
1.17 +#include "vp9/common/vp9_entropymode.h"
1.18 +#include "vpx_mem/vpx_mem.h"
1.19 +#include "vpx/vpx_integer.h"
1.20 +
1.21 +#define MODEL_NODES (ENTROPY_NODES - UNCONSTRAINED_NODES)
1.22 +
1.23 +DECLARE_ALIGNED(16, const uint8_t, vp9_norm[256]) = {
1.24 + 0, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
1.25 + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
1.26 + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
1.27 + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
1.28 + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1.29 + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1.30 + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1.31 + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1.32 + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1.33 + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1.34 + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1.35 + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1.36 + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1.37 + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1.38 + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1.39 + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
1.40 +};
1.41 +
1.42 +DECLARE_ALIGNED(16, const uint8_t,
1.43 + vp9_coefband_trans_8x8plus[1024]) = {
1.44 + 0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4,
1.45 + 4, 4, 4, 4, 4, 5,
1.46 + // beyond MAXBAND_INDEX+1 all values are filled as 5
1.47 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.48 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.49 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.50 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.51 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.52 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.53 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.54 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.55 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.56 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.57 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.58 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.59 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.60 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.61 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.62 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.63 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.64 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.65 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.66 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.67 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.68 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.69 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.70 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.71 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.72 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.73 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.74 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.75 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.76 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.77 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.78 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.79 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.80 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.81 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.82 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.83 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.84 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.85 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.86 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.87 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.88 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.89 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.90 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.91 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.92 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.93 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.94 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.95 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.96 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.97 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.98 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.99 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.100 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.101 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.102 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.103 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.104 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.105 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.106 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.107 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.108 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.109 + 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
1.110 +};
1.111 +
1.112 +DECLARE_ALIGNED(16, const uint8_t,
1.113 + vp9_coefband_trans_4x4[16]) = {
1.114 + 0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5,
1.115 +};
1.116 +
1.117 +DECLARE_ALIGNED(16, const uint8_t, vp9_pt_energy_class[MAX_ENTROPY_TOKENS]) = {
1.118 + 0, 1, 2, 3, 3, 4, 4, 5, 5, 5, 5, 5
1.119 +};
1.120 +
1.121 +
1.122 +
1.123 +/* Array indices are identical to previously-existing CONTEXT_NODE indices */
1.124 +
1.125 +const vp9_tree_index vp9_coef_tree[TREE_SIZE(MAX_ENTROPY_TOKENS)] = {
1.126 + -DCT_EOB_TOKEN, 2, /* 0 = EOB */
1.127 + -ZERO_TOKEN, 4, /* 1 = ZERO */
1.128 + -ONE_TOKEN, 6, /* 2 = ONE */
1.129 + 8, 12, /* 3 = LOW_VAL */
1.130 + -TWO_TOKEN, 10, /* 4 = TWO */
1.131 + -THREE_TOKEN, -FOUR_TOKEN, /* 5 = THREE */
1.132 + 14, 16, /* 6 = HIGH_LOW */
1.133 + -DCT_VAL_CATEGORY1, -DCT_VAL_CATEGORY2, /* 7 = CAT_ONE */
1.134 + 18, 20, /* 8 = CAT_THREEFOUR */
1.135 + -DCT_VAL_CATEGORY3, -DCT_VAL_CATEGORY4, /* 9 = CAT_THREE */
1.136 + -DCT_VAL_CATEGORY5, -DCT_VAL_CATEGORY6 /* 10 = CAT_FIVE */
1.137 +};
1.138 +
1.139 +struct vp9_token vp9_coef_encodings[MAX_ENTROPY_TOKENS];
1.140 +
1.141 +/* Trees for extra bits. Probabilities are constant and
1.142 + do not depend on previously encoded bits */
1.143 +
1.144 +static const vp9_prob Pcat1[] = { 159};
1.145 +static const vp9_prob Pcat2[] = { 165, 145};
1.146 +static const vp9_prob Pcat3[] = { 173, 148, 140};
1.147 +static const vp9_prob Pcat4[] = { 176, 155, 140, 135};
1.148 +static const vp9_prob Pcat5[] = { 180, 157, 141, 134, 130};
1.149 +static const vp9_prob Pcat6[] = {
1.150 + 254, 254, 254, 252, 249, 243, 230, 196, 177, 153, 140, 133, 130, 129
1.151 +};
1.152 +
1.153 +const vp9_tree_index vp9_coefmodel_tree[6] = {
1.154 + -DCT_EOB_MODEL_TOKEN, 2, /* 0 = EOB */
1.155 + -ZERO_TOKEN, 4, /* 1 = ZERO */
1.156 + -ONE_TOKEN, -TWO_TOKEN,
1.157 +};
1.158 +
1.159 +// Model obtained from a 2-sided zero-centerd distribuition derived
1.160 +// from a Pareto distribution. The cdf of the distribution is:
1.161 +// cdf(x) = 0.5 + 0.5 * sgn(x) * [1 - {alpha/(alpha + |x|)} ^ beta]
1.162 +//
1.163 +// For a given beta and a given probablity of the 1-node, the alpha
1.164 +// is first solved, and then the {alpha, beta} pair is used to generate
1.165 +// the probabilities for the rest of the nodes.
1.166 +
1.167 +// beta = 8
1.168 +static const vp9_prob modelcoefprobs_pareto8[COEFPROB_MODELS][MODEL_NODES] = {
1.169 + { 3, 86, 128, 6, 86, 23, 88, 29},
1.170 + { 9, 86, 129, 17, 88, 61, 94, 76},
1.171 + { 15, 87, 129, 28, 89, 93, 100, 110},
1.172 + { 20, 88, 130, 38, 91, 118, 106, 136},
1.173 + { 26, 89, 131, 48, 92, 139, 111, 156},
1.174 + { 31, 90, 131, 58, 94, 156, 117, 171},
1.175 + { 37, 90, 132, 66, 95, 171, 122, 184},
1.176 + { 42, 91, 132, 75, 97, 183, 127, 194},
1.177 + { 47, 92, 133, 83, 98, 193, 132, 202},
1.178 + { 52, 93, 133, 90, 100, 201, 137, 208},
1.179 + { 57, 94, 134, 98, 101, 208, 142, 214},
1.180 + { 62, 94, 135, 105, 103, 214, 146, 218},
1.181 + { 66, 95, 135, 111, 104, 219, 151, 222},
1.182 + { 71, 96, 136, 117, 106, 224, 155, 225},
1.183 + { 76, 97, 136, 123, 107, 227, 159, 228},
1.184 + { 80, 98, 137, 129, 109, 231, 162, 231},
1.185 + { 84, 98, 138, 134, 110, 234, 166, 233},
1.186 + { 89, 99, 138, 140, 112, 236, 170, 235},
1.187 + { 93, 100, 139, 145, 113, 238, 173, 236},
1.188 + { 97, 101, 140, 149, 115, 240, 176, 238},
1.189 + {101, 102, 140, 154, 116, 242, 179, 239},
1.190 + {105, 103, 141, 158, 118, 243, 182, 240},
1.191 + {109, 104, 141, 162, 119, 244, 185, 241},
1.192 + {113, 104, 142, 166, 120, 245, 187, 242},
1.193 + {116, 105, 143, 170, 122, 246, 190, 243},
1.194 + {120, 106, 143, 173, 123, 247, 192, 244},
1.195 + {123, 107, 144, 177, 125, 248, 195, 244},
1.196 + {127, 108, 145, 180, 126, 249, 197, 245},
1.197 + {130, 109, 145, 183, 128, 249, 199, 245},
1.198 + {134, 110, 146, 186, 129, 250, 201, 246},
1.199 + {137, 111, 147, 189, 131, 251, 203, 246},
1.200 + {140, 112, 147, 192, 132, 251, 205, 247},
1.201 + {143, 113, 148, 194, 133, 251, 207, 247},
1.202 + {146, 114, 149, 197, 135, 252, 208, 248},
1.203 + {149, 115, 149, 199, 136, 252, 210, 248},
1.204 + {152, 115, 150, 201, 138, 252, 211, 248},
1.205 + {155, 116, 151, 204, 139, 253, 213, 249},
1.206 + {158, 117, 151, 206, 140, 253, 214, 249},
1.207 + {161, 118, 152, 208, 142, 253, 216, 249},
1.208 + {163, 119, 153, 210, 143, 253, 217, 249},
1.209 + {166, 120, 153, 212, 144, 254, 218, 250},
1.210 + {168, 121, 154, 213, 146, 254, 220, 250},
1.211 + {171, 122, 155, 215, 147, 254, 221, 250},
1.212 + {173, 123, 155, 217, 148, 254, 222, 250},
1.213 + {176, 124, 156, 218, 150, 254, 223, 250},
1.214 + {178, 125, 157, 220, 151, 254, 224, 251},
1.215 + {180, 126, 157, 221, 152, 254, 225, 251},
1.216 + {183, 127, 158, 222, 153, 254, 226, 251},
1.217 + {185, 128, 159, 224, 155, 255, 227, 251},
1.218 + {187, 129, 160, 225, 156, 255, 228, 251},
1.219 + {189, 131, 160, 226, 157, 255, 228, 251},
1.220 + {191, 132, 161, 227, 159, 255, 229, 251},
1.221 + {193, 133, 162, 228, 160, 255, 230, 252},
1.222 + {195, 134, 163, 230, 161, 255, 231, 252},
1.223 + {197, 135, 163, 231, 162, 255, 231, 252},
1.224 + {199, 136, 164, 232, 163, 255, 232, 252},
1.225 + {201, 137, 165, 233, 165, 255, 233, 252},
1.226 + {202, 138, 166, 233, 166, 255, 233, 252},
1.227 + {204, 139, 166, 234, 167, 255, 234, 252},
1.228 + {206, 140, 167, 235, 168, 255, 235, 252},
1.229 + {207, 141, 168, 236, 169, 255, 235, 252},
1.230 + {209, 142, 169, 237, 171, 255, 236, 252},
1.231 + {210, 144, 169, 237, 172, 255, 236, 252},
1.232 + {212, 145, 170, 238, 173, 255, 237, 252},
1.233 + {214, 146, 171, 239, 174, 255, 237, 253},
1.234 + {215, 147, 172, 240, 175, 255, 238, 253},
1.235 + {216, 148, 173, 240, 176, 255, 238, 253},
1.236 + {218, 149, 173, 241, 177, 255, 239, 253},
1.237 + {219, 150, 174, 241, 179, 255, 239, 253},
1.238 + {220, 152, 175, 242, 180, 255, 240, 253},
1.239 + {222, 153, 176, 242, 181, 255, 240, 253},
1.240 + {223, 154, 177, 243, 182, 255, 240, 253},
1.241 + {224, 155, 178, 244, 183, 255, 241, 253},
1.242 + {225, 156, 178, 244, 184, 255, 241, 253},
1.243 + {226, 158, 179, 244, 185, 255, 242, 253},
1.244 + {228, 159, 180, 245, 186, 255, 242, 253},
1.245 + {229, 160, 181, 245, 187, 255, 242, 253},
1.246 + {230, 161, 182, 246, 188, 255, 243, 253},
1.247 + {231, 163, 183, 246, 189, 255, 243, 253},
1.248 + {232, 164, 184, 247, 190, 255, 243, 253},
1.249 + {233, 165, 185, 247, 191, 255, 244, 253},
1.250 + {234, 166, 185, 247, 192, 255, 244, 253},
1.251 + {235, 168, 186, 248, 193, 255, 244, 253},
1.252 + {236, 169, 187, 248, 194, 255, 244, 253},
1.253 + {236, 170, 188, 248, 195, 255, 245, 253},
1.254 + {237, 171, 189, 249, 196, 255, 245, 254},
1.255 + {238, 173, 190, 249, 197, 255, 245, 254},
1.256 + {239, 174, 191, 249, 198, 255, 245, 254},
1.257 + {240, 175, 192, 249, 199, 255, 246, 254},
1.258 + {240, 177, 193, 250, 200, 255, 246, 254},
1.259 + {241, 178, 194, 250, 201, 255, 246, 254},
1.260 + {242, 179, 195, 250, 202, 255, 246, 254},
1.261 + {242, 181, 196, 250, 203, 255, 247, 254},
1.262 + {243, 182, 197, 251, 204, 255, 247, 254},
1.263 + {244, 184, 198, 251, 205, 255, 247, 254},
1.264 + {244, 185, 199, 251, 206, 255, 247, 254},
1.265 + {245, 186, 200, 251, 207, 255, 247, 254},
1.266 + {246, 188, 201, 252, 207, 255, 248, 254},
1.267 + {246, 189, 202, 252, 208, 255, 248, 254},
1.268 + {247, 191, 203, 252, 209, 255, 248, 254},
1.269 + {247, 192, 204, 252, 210, 255, 248, 254},
1.270 + {248, 194, 205, 252, 211, 255, 248, 254},
1.271 + {248, 195, 206, 252, 212, 255, 249, 254},
1.272 + {249, 197, 207, 253, 213, 255, 249, 254},
1.273 + {249, 198, 208, 253, 214, 255, 249, 254},
1.274 + {250, 200, 210, 253, 215, 255, 249, 254},
1.275 + {250, 201, 211, 253, 215, 255, 249, 254},
1.276 + {250, 203, 212, 253, 216, 255, 249, 254},
1.277 + {251, 204, 213, 253, 217, 255, 250, 254},
1.278 + {251, 206, 214, 254, 218, 255, 250, 254},
1.279 + {252, 207, 216, 254, 219, 255, 250, 254},
1.280 + {252, 209, 217, 254, 220, 255, 250, 254},
1.281 + {252, 211, 218, 254, 221, 255, 250, 254},
1.282 + {253, 213, 219, 254, 222, 255, 250, 254},
1.283 + {253, 214, 221, 254, 223, 255, 250, 254},
1.284 + {253, 216, 222, 254, 224, 255, 251, 254},
1.285 + {253, 218, 224, 254, 225, 255, 251, 254},
1.286 + {254, 220, 225, 254, 225, 255, 251, 254},
1.287 + {254, 222, 227, 255, 226, 255, 251, 254},
1.288 + {254, 224, 228, 255, 227, 255, 251, 254},
1.289 + {254, 226, 230, 255, 228, 255, 251, 254},
1.290 + {255, 228, 231, 255, 230, 255, 251, 254},
1.291 + {255, 230, 233, 255, 231, 255, 252, 254},
1.292 + {255, 232, 235, 255, 232, 255, 252, 254},
1.293 + {255, 235, 237, 255, 233, 255, 252, 254},
1.294 + {255, 238, 240, 255, 235, 255, 252, 255},
1.295 + {255, 241, 243, 255, 236, 255, 252, 254},
1.296 + {255, 246, 247, 255, 239, 255, 253, 255}
1.297 +};
1.298 +
1.299 +static void extend_model_to_full_distribution(vp9_prob p,
1.300 + vp9_prob *tree_probs) {
1.301 + const int l = (p - 1) / 2;
1.302 + const vp9_prob (*model)[MODEL_NODES] = modelcoefprobs_pareto8;
1.303 + if (p & 1) {
1.304 + vpx_memcpy(tree_probs + UNCONSTRAINED_NODES,
1.305 + model[l], MODEL_NODES * sizeof(vp9_prob));
1.306 + } else {
1.307 + // interpolate
1.308 + int i;
1.309 + for (i = UNCONSTRAINED_NODES; i < ENTROPY_NODES; ++i)
1.310 + tree_probs[i] = (model[l][i - UNCONSTRAINED_NODES] +
1.311 + model[l + 1][i - UNCONSTRAINED_NODES]) >> 1;
1.312 + }
1.313 +}
1.314 +
1.315 +void vp9_model_to_full_probs(const vp9_prob *model, vp9_prob *full) {
1.316 + if (full != model)
1.317 + vpx_memcpy(full, model, sizeof(vp9_prob) * UNCONSTRAINED_NODES);
1.318 + extend_model_to_full_distribution(model[PIVOT_NODE], full);
1.319 +}
1.320 +
1.321 +static vp9_tree_index cat1[2], cat2[4], cat3[6], cat4[8], cat5[10], cat6[28];
1.322 +
1.323 +static void init_bit_tree(vp9_tree_index *p, int n) {
1.324 + int i = 0;
1.325 +
1.326 + while (++i < n) {
1.327 + p[0] = p[1] = i << 1;
1.328 + p += 2;
1.329 + }
1.330 +
1.331 + p[0] = p[1] = 0;
1.332 +}
1.333 +
1.334 +static void init_bit_trees() {
1.335 + init_bit_tree(cat1, 1);
1.336 + init_bit_tree(cat2, 2);
1.337 + init_bit_tree(cat3, 3);
1.338 + init_bit_tree(cat4, 4);
1.339 + init_bit_tree(cat5, 5);
1.340 + init_bit_tree(cat6, 14);
1.341 +}
1.342 +
1.343 +const vp9_extra_bit vp9_extra_bits[MAX_ENTROPY_TOKENS] = {
1.344 + { 0, 0, 0, 0},
1.345 + { 0, 0, 0, 1},
1.346 + { 0, 0, 0, 2},
1.347 + { 0, 0, 0, 3},
1.348 + { 0, 0, 0, 4},
1.349 + { cat1, Pcat1, 1, 5},
1.350 + { cat2, Pcat2, 2, 7},
1.351 + { cat3, Pcat3, 3, 11},
1.352 + { cat4, Pcat4, 4, 19},
1.353 + { cat5, Pcat5, 5, 35},
1.354 + { cat6, Pcat6, 14, 67},
1.355 + { 0, 0, 0, 0}
1.356 +};
1.357 +
1.358 +#include "vp9/common/vp9_default_coef_probs.h"
1.359 +
1.360 +void vp9_default_coef_probs(VP9_COMMON *cm) {
1.361 + vp9_copy(cm->fc.coef_probs[TX_4X4], default_coef_probs_4x4);
1.362 + vp9_copy(cm->fc.coef_probs[TX_8X8], default_coef_probs_8x8);
1.363 + vp9_copy(cm->fc.coef_probs[TX_16X16], default_coef_probs_16x16);
1.364 + vp9_copy(cm->fc.coef_probs[TX_32X32], default_coef_probs_32x32);
1.365 +}
1.366 +
1.367 +void vp9_coef_tree_initialize() {
1.368 + init_bit_trees();
1.369 + vp9_tokens_from_tree(vp9_coef_encodings, vp9_coef_tree);
1.370 +}
1.371 +
1.372 +// #define COEF_COUNT_TESTING
1.373 +
1.374 +#define COEF_COUNT_SAT 24
1.375 +#define COEF_MAX_UPDATE_FACTOR 112
1.376 +#define COEF_COUNT_SAT_KEY 24
1.377 +#define COEF_MAX_UPDATE_FACTOR_KEY 112
1.378 +#define COEF_COUNT_SAT_AFTER_KEY 24
1.379 +#define COEF_MAX_UPDATE_FACTOR_AFTER_KEY 128
1.380 +
1.381 +static void adapt_coef_probs(VP9_COMMON *cm, TX_SIZE tx_size,
1.382 + unsigned int count_sat,
1.383 + unsigned int update_factor) {
1.384 + const FRAME_CONTEXT *pre_fc = &cm->frame_contexts[cm->frame_context_idx];
1.385 +
1.386 + vp9_coeff_probs_model *dst_coef_probs = cm->fc.coef_probs[tx_size];
1.387 + const vp9_coeff_probs_model *pre_coef_probs = pre_fc->coef_probs[tx_size];
1.388 + vp9_coeff_count_model *coef_counts = cm->counts.coef[tx_size];
1.389 + unsigned int (*eob_branch_count)[REF_TYPES][COEF_BANDS][PREV_COEF_CONTEXTS] =
1.390 + cm->counts.eob_branch[tx_size];
1.391 + int i, j, k, l, m;
1.392 + unsigned int branch_ct[UNCONSTRAINED_NODES][2];
1.393 +
1.394 + for (i = 0; i < BLOCK_TYPES; ++i)
1.395 + for (j = 0; j < REF_TYPES; ++j)
1.396 + for (k = 0; k < COEF_BANDS; ++k)
1.397 + for (l = 0; l < PREV_COEF_CONTEXTS; ++l) {
1.398 + if (l >= 3 && k == 0)
1.399 + continue;
1.400 + vp9_tree_probs_from_distribution(vp9_coefmodel_tree, branch_ct,
1.401 + coef_counts[i][j][k][l]);
1.402 + branch_ct[0][1] = eob_branch_count[i][j][k][l] - branch_ct[0][0];
1.403 + for (m = 0; m < UNCONSTRAINED_NODES; ++m)
1.404 + dst_coef_probs[i][j][k][l][m] = merge_probs(
1.405 + pre_coef_probs[i][j][k][l][m],
1.406 + branch_ct[m],
1.407 + count_sat, update_factor);
1.408 + }
1.409 +}
1.410 +
1.411 +void vp9_adapt_coef_probs(VP9_COMMON *cm) {
1.412 + TX_SIZE t;
1.413 + unsigned int count_sat, update_factor;
1.414 +
1.415 + if (frame_is_intra_only(cm)) {
1.416 + update_factor = COEF_MAX_UPDATE_FACTOR_KEY;
1.417 + count_sat = COEF_COUNT_SAT_KEY;
1.418 + } else if (cm->last_frame_type == KEY_FRAME) {
1.419 + update_factor = COEF_MAX_UPDATE_FACTOR_AFTER_KEY; /* adapt quickly */
1.420 + count_sat = COEF_COUNT_SAT_AFTER_KEY;
1.421 + } else {
1.422 + update_factor = COEF_MAX_UPDATE_FACTOR;
1.423 + count_sat = COEF_COUNT_SAT;
1.424 + }
1.425 + for (t = TX_4X4; t <= TX_32X32; t++)
1.426 + adapt_coef_probs(cm, t, count_sat, update_factor);
1.427 +}
