vp9_entropy.c 20.2 KB
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/*
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 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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 *
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 *  Use of this source code is governed by a BSD-style license
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 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
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 *  in the file PATENTS.  All contributing project authors may
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 *  be found in the AUTHORS file in the root of the source tree.
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 */

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#include "vp9/common/vp9_entropy.h"
#include "vp9/common/vp9_blockd.h"
#include "vp9/common/vp9_onyxc_int.h"
#include "vp9/common/vp9_entropymode.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vpx/vpx_integer.h"
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DECLARE_ALIGNED(16, const uint8_t, vp9_norm[256]) = {
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  0, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
  3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};

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DECLARE_ALIGNED(16, const uint8_t,
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                vp9_coefband_trans_8x8plus[1024]) = {
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  0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4,
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  4, 4, 4, 4, 4, 5,
  // beyond MAXBAND_INDEX+1 all values are filled as 5
                    5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
  5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
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};

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DECLARE_ALIGNED(16, const uint8_t, vp9_coefband_trans_4x4[16]) = {
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  0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5,
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};

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DECLARE_ALIGNED(16, const uint8_t, vp9_pt_energy_class[MAX_ENTROPY_TOKENS]) = {
  0, 1, 2, 3, 3, 4, 4, 5, 5, 5, 5, 5
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};
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const vp9_tree_index vp9_coefmodel_tree[6] = {
  -DCT_EOB_MODEL_TOKEN, 2,                      /* 0 = EOB */
  -ZERO_TOKEN, 4,                               /* 1 = ZERO */
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  -ONE_TOKEN, -TWO_TOKEN,
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};

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// Model obtained from a 2-sided zero-centerd distribuition derived
// from a Pareto distribution. The cdf of the distribution is:
// cdf(x) = 0.5 + 0.5 * sgn(x) * [1 - {alpha/(alpha + |x|)} ^ beta]
//
// For a given beta and a given probablity of the 1-node, the alpha
// is first solved, and then the {alpha, beta} pair is used to generate
// the probabilities for the rest of the nodes.
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// beta = 8
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// Every odd line in this table can be generated from the even lines
// by averaging :
// vp9_pareto8_full[l][node] = ( vp9_pareto8_full[l-1][node] +
//                               vp9_pareto8_full[l+1][node] ) >> 1;
const vp9_prob vp9_pareto8_full[256][MODEL_NODES] = {
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    {  3, 86, 128,  6, 86, 23, 88, 29},
    {  6, 86, 128, 11, 87, 42, 91, 52},
    {  9, 86, 129, 17, 88, 61, 94, 76},
    { 12, 86, 129, 22, 88, 77, 97, 93},
    { 15, 87, 129, 28, 89, 93, 100, 110},
    { 17, 87, 129, 33, 90, 105, 103, 123},
    { 20, 88, 130, 38, 91, 118, 106, 136},
    { 23, 88, 130, 43, 91, 128, 108, 146},
    { 26, 89, 131, 48, 92, 139, 111, 156},
    { 28, 89, 131, 53, 93, 147, 114, 163},
    { 31, 90, 131, 58, 94, 156, 117, 171},
    { 34, 90, 131, 62, 94, 163, 119, 177},
    { 37, 90, 132, 66, 95, 171, 122, 184},
    { 39, 90, 132, 70, 96, 177, 124, 189},
    { 42, 91, 132, 75, 97, 183, 127, 194},
    { 44, 91, 132, 79, 97, 188, 129, 198},
    { 47, 92, 133, 83, 98, 193, 132, 202},
    { 49, 92, 133, 86, 99, 197, 134, 205},
    { 52, 93, 133, 90, 100, 201, 137, 208},
    { 54, 93, 133, 94, 100, 204, 139, 211},
    { 57, 94, 134, 98, 101, 208, 142, 214},
    { 59, 94, 134, 101, 102, 211, 144, 216},
    { 62, 94, 135, 105, 103, 214, 146, 218},
    { 64, 94, 135, 108, 103, 216, 148, 220},
    { 66, 95, 135, 111, 104, 219, 151, 222},
    { 68, 95, 135, 114, 105, 221, 153, 223},
    { 71, 96, 136, 117, 106, 224, 155, 225},
    { 73, 96, 136, 120, 106, 225, 157, 226},
    { 76, 97, 136, 123, 107, 227, 159, 228},
    { 78, 97, 136, 126, 108, 229, 160, 229},
    { 80, 98, 137, 129, 109, 231, 162, 231},
    { 82, 98, 137, 131, 109, 232, 164, 232},
    { 84, 98, 138, 134, 110, 234, 166, 233},
    { 86, 98, 138, 137, 111, 235, 168, 234},
    { 89, 99, 138, 140, 112, 236, 170, 235},
    { 91, 99, 138, 142, 112, 237, 171, 235},
    { 93, 100, 139, 145, 113, 238, 173, 236},
    { 95, 100, 139, 147, 114, 239, 174, 237},
    { 97, 101, 140, 149, 115, 240, 176, 238},
    { 99, 101, 140, 151, 115, 241, 177, 238},
    {101, 102, 140, 154, 116, 242, 179, 239},
    {103, 102, 140, 156, 117, 242, 180, 239},
    {105, 103, 141, 158, 118, 243, 182, 240},
    {107, 103, 141, 160, 118, 243, 183, 240},
    {109, 104, 141, 162, 119, 244, 185, 241},
    {111, 104, 141, 164, 119, 244, 186, 241},
    {113, 104, 142, 166, 120, 245, 187, 242},
    {114, 104, 142, 168, 121, 245, 188, 242},
    {116, 105, 143, 170, 122, 246, 190, 243},
    {118, 105, 143, 171, 122, 246, 191, 243},
    {120, 106, 143, 173, 123, 247, 192, 244},
    {121, 106, 143, 175, 124, 247, 193, 244},
    {123, 107, 144, 177, 125, 248, 195, 244},
    {125, 107, 144, 178, 125, 248, 196, 244},
    {127, 108, 145, 180, 126, 249, 197, 245},
    {128, 108, 145, 181, 127, 249, 198, 245},
    {130, 109, 145, 183, 128, 249, 199, 245},
    {132, 109, 145, 184, 128, 249, 200, 245},
    {134, 110, 146, 186, 129, 250, 201, 246},
    {135, 110, 146, 187, 130, 250, 202, 246},
    {137, 111, 147, 189, 131, 251, 203, 246},
    {138, 111, 147, 190, 131, 251, 204, 246},
    {140, 112, 147, 192, 132, 251, 205, 247},
    {141, 112, 147, 193, 132, 251, 206, 247},
    {143, 113, 148, 194, 133, 251, 207, 247},
    {144, 113, 148, 195, 134, 251, 207, 247},
    {146, 114, 149, 197, 135, 252, 208, 248},
    {147, 114, 149, 198, 135, 252, 209, 248},
    {149, 115, 149, 199, 136, 252, 210, 248},
    {150, 115, 149, 200, 137, 252, 210, 248},
    {152, 115, 150, 201, 138, 252, 211, 248},
    {153, 115, 150, 202, 138, 252, 212, 248},
    {155, 116, 151, 204, 139, 253, 213, 249},
    {156, 116, 151, 205, 139, 253, 213, 249},
    {158, 117, 151, 206, 140, 253, 214, 249},
    {159, 117, 151, 207, 141, 253, 215, 249},
    {161, 118, 152, 208, 142, 253, 216, 249},
    {162, 118, 152, 209, 142, 253, 216, 249},
    {163, 119, 153, 210, 143, 253, 217, 249},
    {164, 119, 153, 211, 143, 253, 217, 249},
    {166, 120, 153, 212, 144, 254, 218, 250},
    {167, 120, 153, 212, 145, 254, 219, 250},
    {168, 121, 154, 213, 146, 254, 220, 250},
    {169, 121, 154, 214, 146, 254, 220, 250},
    {171, 122, 155, 215, 147, 254, 221, 250},
    {172, 122, 155, 216, 147, 254, 221, 250},
    {173, 123, 155, 217, 148, 254, 222, 250},
    {174, 123, 155, 217, 149, 254, 222, 250},
    {176, 124, 156, 218, 150, 254, 223, 250},
    {177, 124, 156, 219, 150, 254, 223, 250},
    {178, 125, 157, 220, 151, 254, 224, 251},
    {179, 125, 157, 220, 151, 254, 224, 251},
    {180, 126, 157, 221, 152, 254, 225, 251},
    {181, 126, 157, 221, 152, 254, 225, 251},
    {183, 127, 158, 222, 153, 254, 226, 251},
    {184, 127, 158, 223, 154, 254, 226, 251},
    {185, 128, 159, 224, 155, 255, 227, 251},
    {186, 128, 159, 224, 155, 255, 227, 251},
    {187, 129, 160, 225, 156, 255, 228, 251},
    {188, 130, 160, 225, 156, 255, 228, 251},
    {189, 131, 160, 226, 157, 255, 228, 251},
    {190, 131, 160, 226, 158, 255, 228, 251},
    {191, 132, 161, 227, 159, 255, 229, 251},
    {192, 132, 161, 227, 159, 255, 229, 251},
    {193, 133, 162, 228, 160, 255, 230, 252},
    {194, 133, 162, 229, 160, 255, 230, 252},
    {195, 134, 163, 230, 161, 255, 231, 252},
    {196, 134, 163, 230, 161, 255, 231, 252},
    {197, 135, 163, 231, 162, 255, 231, 252},
    {198, 135, 163, 231, 162, 255, 231, 252},
    {199, 136, 164, 232, 163, 255, 232, 252},
    {200, 136, 164, 232, 164, 255, 232, 252},
    {201, 137, 165, 233, 165, 255, 233, 252},
    {201, 137, 165, 233, 165, 255, 233, 252},
    {202, 138, 166, 233, 166, 255, 233, 252},
    {203, 138, 166, 233, 166, 255, 233, 252},
    {204, 139, 166, 234, 167, 255, 234, 252},
    {205, 139, 166, 234, 167, 255, 234, 252},
    {206, 140, 167, 235, 168, 255, 235, 252},
    {206, 140, 167, 235, 168, 255, 235, 252},
    {207, 141, 168, 236, 169, 255, 235, 252},
    {208, 141, 168, 236, 170, 255, 235, 252},
    {209, 142, 169, 237, 171, 255, 236, 252},
    {209, 143, 169, 237, 171, 255, 236, 252},
    {210, 144, 169, 237, 172, 255, 236, 252},
    {211, 144, 169, 237, 172, 255, 236, 252},
    {212, 145, 170, 238, 173, 255, 237, 252},
    {213, 145, 170, 238, 173, 255, 237, 252},
    {214, 146, 171, 239, 174, 255, 237, 253},
    {214, 146, 171, 239, 174, 255, 237, 253},
    {215, 147, 172, 240, 175, 255, 238, 253},
    {215, 147, 172, 240, 175, 255, 238, 253},
    {216, 148, 173, 240, 176, 255, 238, 253},
    {217, 148, 173, 240, 176, 255, 238, 253},
    {218, 149, 173, 241, 177, 255, 239, 253},
    {218, 149, 173, 241, 178, 255, 239, 253},
    {219, 150, 174, 241, 179, 255, 239, 253},
    {219, 151, 174, 241, 179, 255, 239, 253},
    {220, 152, 175, 242, 180, 255, 240, 253},
    {221, 152, 175, 242, 180, 255, 240, 253},
    {222, 153, 176, 242, 181, 255, 240, 253},
    {222, 153, 176, 242, 181, 255, 240, 253},
    {223, 154, 177, 243, 182, 255, 240, 253},
    {223, 154, 177, 243, 182, 255, 240, 253},
    {224, 155, 178, 244, 183, 255, 241, 253},
    {224, 155, 178, 244, 183, 255, 241, 253},
    {225, 156, 178, 244, 184, 255, 241, 253},
    {225, 157, 178, 244, 184, 255, 241, 253},
    {226, 158, 179, 244, 185, 255, 242, 253},
    {227, 158, 179, 244, 185, 255, 242, 253},
    {228, 159, 180, 245, 186, 255, 242, 253},
    {228, 159, 180, 245, 186, 255, 242, 253},
    {229, 160, 181, 245, 187, 255, 242, 253},
    {229, 160, 181, 245, 187, 255, 242, 253},
    {230, 161, 182, 246, 188, 255, 243, 253},
    {230, 162, 182, 246, 188, 255, 243, 253},
    {231, 163, 183, 246, 189, 255, 243, 253},
    {231, 163, 183, 246, 189, 255, 243, 253},
    {232, 164, 184, 247, 190, 255, 243, 253},
    {232, 164, 184, 247, 190, 255, 243, 253},
    {233, 165, 185, 247, 191, 255, 244, 253},
    {233, 165, 185, 247, 191, 255, 244, 253},
    {234, 166, 185, 247, 192, 255, 244, 253},
    {234, 167, 185, 247, 192, 255, 244, 253},
    {235, 168, 186, 248, 193, 255, 244, 253},
    {235, 168, 186, 248, 193, 255, 244, 253},
    {236, 169, 187, 248, 194, 255, 244, 253},
    {236, 169, 187, 248, 194, 255, 244, 253},
    {236, 170, 188, 248, 195, 255, 245, 253},
    {236, 170, 188, 248, 195, 255, 245, 253},
    {237, 171, 189, 249, 196, 255, 245, 254},
    {237, 172, 189, 249, 196, 255, 245, 254},
    {238, 173, 190, 249, 197, 255, 245, 254},
    {238, 173, 190, 249, 197, 255, 245, 254},
    {239, 174, 191, 249, 198, 255, 245, 254},
    {239, 174, 191, 249, 198, 255, 245, 254},
    {240, 175, 192, 249, 199, 255, 246, 254},
    {240, 176, 192, 249, 199, 255, 246, 254},
    {240, 177, 193, 250, 200, 255, 246, 254},
    {240, 177, 193, 250, 200, 255, 246, 254},
    {241, 178, 194, 250, 201, 255, 246, 254},
    {241, 178, 194, 250, 201, 255, 246, 254},
    {242, 179, 195, 250, 202, 255, 246, 254},
    {242, 180, 195, 250, 202, 255, 246, 254},
    {242, 181, 196, 250, 203, 255, 247, 254},
    {242, 181, 196, 250, 203, 255, 247, 254},
    {243, 182, 197, 251, 204, 255, 247, 254},
    {243, 183, 197, 251, 204, 255, 247, 254},
    {244, 184, 198, 251, 205, 255, 247, 254},
    {244, 184, 198, 251, 205, 255, 247, 254},
    {244, 185, 199, 251, 206, 255, 247, 254},
    {244, 185, 199, 251, 206, 255, 247, 254},
    {245, 186, 200, 251, 207, 255, 247, 254},
    {245, 187, 200, 251, 207, 255, 247, 254},
    {246, 188, 201, 252, 207, 255, 248, 254},
    {246, 188, 201, 252, 207, 255, 248, 254},
    {246, 189, 202, 252, 208, 255, 248, 254},
    {246, 190, 202, 252, 208, 255, 248, 254},
    {247, 191, 203, 252, 209, 255, 248, 254},
    {247, 191, 203, 252, 209, 255, 248, 254},
    {247, 192, 204, 252, 210, 255, 248, 254},
    {247, 193, 204, 252, 210, 255, 248, 254},
    {248, 194, 205, 252, 211, 255, 248, 254},
    {248, 194, 205, 252, 211, 255, 248, 254},
    {248, 195, 206, 252, 212, 255, 249, 254},
    {248, 196, 206, 252, 212, 255, 249, 254},
    {249, 197, 207, 253, 213, 255, 249, 254},
    {249, 197, 207, 253, 213, 255, 249, 254},
    {249, 198, 208, 253, 214, 255, 249, 254},
    {249, 199, 209, 253, 214, 255, 249, 254},
    {250, 200, 210, 253, 215, 255, 249, 254},
    {250, 200, 210, 253, 215, 255, 249, 254},
    {250, 201, 211, 253, 215, 255, 249, 254},
    {250, 202, 211, 253, 215, 255, 249, 254},
    {250, 203, 212, 253, 216, 255, 249, 254},
    {250, 203, 212, 253, 216, 255, 249, 254},
    {251, 204, 213, 253, 217, 255, 250, 254},
    {251, 205, 213, 253, 217, 255, 250, 254},
    {251, 206, 214, 254, 218, 255, 250, 254},
    {251, 206, 215, 254, 218, 255, 250, 254},
    {252, 207, 216, 254, 219, 255, 250, 254},
    {252, 208, 216, 254, 219, 255, 250, 254},
    {252, 209, 217, 254, 220, 255, 250, 254},
    {252, 210, 217, 254, 220, 255, 250, 254},
    {252, 211, 218, 254, 221, 255, 250, 254},
    {252, 212, 218, 254, 221, 255, 250, 254},
    {253, 213, 219, 254, 222, 255, 250, 254},
    {253, 213, 220, 254, 222, 255, 250, 254},
    {253, 214, 221, 254, 223, 255, 250, 254},
    {253, 215, 221, 254, 223, 255, 250, 254},
    {253, 216, 222, 254, 224, 255, 251, 254},
    {253, 217, 223, 254, 224, 255, 251, 254},
    {253, 218, 224, 254, 225, 255, 251, 254},
    {253, 219, 224, 254, 225, 255, 251, 254},
    {254, 220, 225, 254, 225, 255, 251, 254},
    {254, 221, 226, 254, 225, 255, 251, 254},
    {254, 222, 227, 255, 226, 255, 251, 254},
    {254, 223, 227, 255, 226, 255, 251, 254},
    {254, 224, 228, 255, 227, 255, 251, 254},
    {254, 225, 229, 255, 227, 255, 251, 254},
    {254, 226, 230, 255, 228, 255, 251, 254},
    {254, 227, 230, 255, 229, 255, 251, 254},
    {255, 228, 231, 255, 230, 255, 251, 254},
    {255, 229, 232, 255, 230, 255, 251, 254},
    {255, 230, 233, 255, 231, 255, 252, 254},
    {255, 231, 234, 255, 231, 255, 252, 254},
    {255, 232, 235, 255, 232, 255, 252, 254},
    {255, 233, 236, 255, 232, 255, 252, 254},
    {255, 235, 237, 255, 233, 255, 252, 254},
    {255, 236, 238, 255, 234, 255, 252, 254},
    {255, 238, 240, 255, 235, 255, 252, 255},
    {255, 239, 241, 255, 235, 255, 252, 254},
    {255, 241, 243, 255, 236, 255, 252, 254},
    {255, 243, 245, 255, 237, 255, 252, 254},
    {255, 246, 247, 255, 239, 255, 253, 255},
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    {255, 246, 247, 255, 239, 255, 253, 255},
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};

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static void extend_to_full_distribution(vp9_prob *probs, vp9_prob p) {
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  vpx_memcpy(probs, vp9_pareto8_full[p = 0 ? 0 : p - 1],
             MODEL_NODES * sizeof(vp9_prob));
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}
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void vp9_model_to_full_probs(const vp9_prob *model, vp9_prob *full) {
  if (full != model)
    vpx_memcpy(full, model, sizeof(vp9_prob) * UNCONSTRAINED_NODES);
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  extend_to_full_distribution(&full[UNCONSTRAINED_NODES], model[PIVOT_NODE]);
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}

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#include "vp9/common/vp9_default_coef_probs.h"
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void vp9_default_coef_probs(VP9_COMMON *cm) {
  vp9_copy(cm->fc.coef_probs[TX_4X4], default_coef_probs_4x4);
  vp9_copy(cm->fc.coef_probs[TX_8X8], default_coef_probs_8x8);
  vp9_copy(cm->fc.coef_probs[TX_16X16], default_coef_probs_16x16);
  vp9_copy(cm->fc.coef_probs[TX_32X32], default_coef_probs_32x32);
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}
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#define COEF_COUNT_SAT 24
#define COEF_MAX_UPDATE_FACTOR 112
#define COEF_COUNT_SAT_KEY 24
#define COEF_MAX_UPDATE_FACTOR_KEY 112
#define COEF_COUNT_SAT_AFTER_KEY 24
#define COEF_MAX_UPDATE_FACTOR_AFTER_KEY 128

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static void adapt_coef_probs(VP9_COMMON *cm, TX_SIZE tx_size,
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                             unsigned int count_sat,
                             unsigned int update_factor) {
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  const FRAME_CONTEXT *pre_fc = &cm->frame_contexts[cm->frame_context_idx];
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  vp9_coeff_probs_model *dst_coef_probs = cm->fc.coef_probs[tx_size];
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  const vp9_coeff_probs_model *pre_coef_probs = pre_fc->coef_probs[tx_size];
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  vp9_coeff_count_model *coef_counts = cm->counts.coef[tx_size];
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  unsigned int (*eob_branch_count)[REF_TYPES][COEF_BANDS][PREV_COEF_CONTEXTS] =
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      cm->counts.eob_branch[tx_size];
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  int i, j, k, l, m;
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  unsigned int branch_ct[UNCONSTRAINED_NODES][2];
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  for (i = 0; i < BLOCK_TYPES; ++i)
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    for (j = 0; j < REF_TYPES; ++j)
      for (k = 0; k < COEF_BANDS; ++k)
        for (l = 0; l < PREV_COEF_CONTEXTS; ++l) {
          if (l >= 3 && k == 0)
            continue;
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          vp9_tree_probs_from_distribution(vp9_coefmodel_tree, branch_ct,
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                                           coef_counts[i][j][k][l]);
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          branch_ct[0][1] = eob_branch_count[i][j][k][l] - branch_ct[0][0];
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          for (m = 0; m < UNCONSTRAINED_NODES; ++m)
            dst_coef_probs[i][j][k][l][m] = merge_probs(
                                                pre_coef_probs[i][j][k][l][m],
                                                branch_ct[m],
                                                count_sat, update_factor);
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        }
}

void vp9_adapt_coef_probs(VP9_COMMON *cm) {
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  TX_SIZE t;
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  unsigned int count_sat, update_factor;
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  if (frame_is_intra_only(cm)) {
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    update_factor = COEF_MAX_UPDATE_FACTOR_KEY;
    count_sat = COEF_COUNT_SAT_KEY;
  } else if (cm->last_frame_type == KEY_FRAME) {
    update_factor = COEF_MAX_UPDATE_FACTOR_AFTER_KEY;  /* adapt quickly */
    count_sat = COEF_COUNT_SAT_AFTER_KEY;
  } else {
    update_factor = COEF_MAX_UPDATE_FACTOR;
    count_sat = COEF_COUNT_SAT;
  }
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  for (t = TX_4X4; t <= TX_32X32; t++)
    adapt_coef_probs(cm, t, count_sat, update_factor);
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}