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FFmpeg/libavcodec/vp8data.h

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  1. /**

  2.  * VP8 compatible video decoder

  3.  *

  4.  * Copyright (C) 2010 David Conrad

  5.  * Copyright (C) 2010 Ronald S. Bultje

  6.  *

  7.  * This file is part of FFmpeg.

  8.  *

  9.  * FFmpeg is free software; you can redistribute it and/or

  10.  * modify it under the terms of the GNU Lesser General Public

  11.  * License as published by the Free Software Foundation; either

  12.  * version 2.1 of the License, or (at your option) any later version.

  13.  *

  14.  * FFmpeg is distributed in the hope that it will be useful,

  15.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  16.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  17.  * Lesser General Public License for more details.

  18.  *

  19.  * You should have received a copy of the GNU Lesser General Public

  20.  * License along with FFmpeg; if not, write to the Free Software

  21.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  22.  */

  23. 

  24. // TODO: move these #define and enum to a better header...

  25. 

  26. #define VP8_MAX_QUANT 127

  27. 

  28. enum dct_token {

  29.     DCT_0,

  30.     DCT_1,

  31.     DCT_2,

  32.     DCT_3,

  33.     DCT_4,

  34.     DCT_CAT1,

  35.     DCT_CAT2,

  36.     DCT_CAT3,

  37.     DCT_CAT4,

  38.     DCT_CAT5,

  39.     DCT_CAT6,

  40.     DCT_EOB,

  41. 

  42.     NUM_DCT_TOKENS

  43. };

  44. 

  45. #include "h264pred.h"

  46. 

  47. // used to signal 4x4 intra pred in luma MBs

  48. #define MODE_I4x4 4

  49. 

  50. enum inter_mvmode {

  51.     VP8_MVMODE_NEAREST = MODE_I4x4 + 1,

  52.     VP8_MVMODE_NEAR,

  53.     VP8_MVMODE_ZERO,

  54.     VP8_MVMODE_NEW,

  55.     VP8_MVMODE_SPLIT

  56. };

  57. 

  58. enum inter_submvmode {

  59.     VP8_SUBMVMODE_LEFT4X4,

  60.     VP8_SUBMVMODE_TOP4X4,

  61.     VP8_SUBMVMODE_ZERO4X4,

  62.     VP8_SUBMVMODE_NEW4X4

  63. };

  64. 

  65. static const uint8_t vp8_pred4x4_mode[] =

  66. {

  67.     [DC_PRED8x8]    = DC_PRED,

  68.     [VERT_PRED8x8]  = VERT_PRED,

  69.     [HOR_PRED8x8]   = HOR_PRED,

  70.     [PLANE_PRED8x8] = TM_VP8_PRED,

  71. };

  72. 

  73. static const int8_t vp8_pred16x16_tree_intra[4][2] =

  74. {

  75.     { -MODE_I4x4, 1 },                      // '0'

  76.      { 2, 3 },

  77.       {  -DC_PRED8x8,  -VERT_PRED8x8 },     // '100', '101'

  78.       { -HOR_PRED8x8, -PLANE_PRED8x8 },     // '110', '111'

  79. };

  80. 

  81. static const int8_t vp8_pred16x16_tree_inter[4][2] =

  82. {

  83.     { -DC_PRED8x8, 1 },                     // '0'

  84.      { 2, 3 },

  85.       {  -VERT_PRED8x8, -HOR_PRED8x8 },     // '100', '101'

  86.       { -PLANE_PRED8x8, -MODE_I4x4 },       // '110', '111'

  87. };

  88. 

  89. static const int vp8_mode_contexts[6][4] = {

  90.     {   7,   1,   1, 143 },

  91.     {  14,  18,  14, 107 },

  92.     { 135,  64,  57,  68 },

  93.     {  60,  56, 128,  65 },

  94.     { 159, 134, 128,  34 },

  95.     { 234, 188, 128,  28 },

  96. };

  97. 

  98. static const int8_t vp8_pred16x16_tree_mvinter[4][2] = {

  99.     { -VP8_MVMODE_ZERO,      1 },           // '0'

  100.      { -VP8_MVMODE_NEAREST,  2 },           // '10'

  101.       { -VP8_MVMODE_NEAR,    3 },           // '110'

  102.        { -VP8_MVMODE_NEW, -VP8_MVMODE_SPLIT } // '1110', '1111'

  103. };

  104. 

  105. static const int8_t vp8_small_mvtree[7][2] = {

  106.     {  1, 4 },

  107.      {  2, 3 },

  108.       { -0, -1 },                           // '000', '001'

  109.       { -2, -3 },                           // '010', '011'

  110.      {  5,  6 },

  111.       { -4, -5 },                           // '100', '101'

  112.       { -6, -7 }                            // '110', '111'

  113. };

  114. 

  115. static const uint8_t vp8_mbsplits[4][16] = {

  116.     {  0,  0,  0,  0,  0,  0,  0,  0,

  117.        1,  1,  1,  1,  1,  1,  1,  1  },

  118.     {  0,  0,  1,  1,  0,  0,  1,  1,

  119.        0,  0,  1,  1,  0,  0,  1,  1  },

  120.     {  0,  0,  1,  1,  0,  0,  1,  1,

  121.        2,  2,  3,  3,  2,  2,  3,  3  },

  122.     {  0,  1,  2,  3,  4,  5,  6,  7,

  123.        8,  9, 10, 11, 12, 13, 14, 15  }

  124. };

  125. 

  126. static const uint8_t vp8_mbfirstidx[4][16] = {

  127.     {  0,  8 }, {  0,  2 }, {  0,  2,  8,  10 },

  128.     {  0,  1,  2,  3,  4,  5,  6,  7,

  129.        8,  9, 10, 11, 12, 13, 14, 15 }

  130. };

  131. 

  132. static const int8_t vp8_mbsplit_tree[3][2] = {

  133.     { -3,  1 },                             // '0' - 16 individual MVs

  134.      { -2,  2 },                            // '10' - quarter-based MVs

  135.       { -0, -1 }                            // '110' - top/bottom MVs,

  136.                                             // '111' - left/right MVs

  137. };

  138. static const uint8_t vp8_mbsplit_count[4] = {   2,   2,   4,  16 };

  139. static const uint8_t vp8_mbsplit_prob[3]  = { 110, 111, 150 };

  140. 

  141. static const uint8_t vp8_submv_prob[5][3] = {

  142.     { 147, 136,  18 },

  143.     { 106, 145,   1 },

  144.     { 179, 121,   1 },

  145.     { 223,   1,  34 },

  146.     { 208,   1,   1 }

  147. };

  148. 

  149. static const int8_t vp8_submv_ref_tree[3][2] = {

  150.     { -VP8_SUBMVMODE_LEFT4X4, 1 },          // '0'

  151.      { -VP8_SUBMVMODE_TOP4X4, 2 },          // '10'

  152.       { -VP8_SUBMVMODE_ZERO4X4, -VP8_SUBMVMODE_NEW4X4 } // '110', '111'

  153. };

  154. 

  155. static const uint8_t vp8_pred16x16_prob_intra[4] = { 145, 156, 163, 128 };

  156. static const uint8_t vp8_pred16x16_prob_inter[4] = { 112,  86, 140,  37 };

  157. 

  158. static const int8_t vp8_pred4x4_tree[9][2] =

  159. {

  160.     { -DC_PRED, 1 },                                    // '0'

  161.      { -TM_VP8_PRED, 2 },                               // '10'

  162.       { -VERT_PRED, 3 },                                // '110'

  163.        { 4, 6 },

  164.         { -HOR_PRED, 5 },                               // '11100'

  165.          { -DIAG_DOWN_RIGHT_PRED, -VERT_RIGHT_PRED },   // '111010', '111011'

  166.         { -DIAG_DOWN_LEFT_PRED, 7 },                    // '11110'

  167.          { -VERT_LEFT_PRED, 8 },                        // '111110'

  168.           { -HOR_DOWN_PRED, -HOR_UP_PRED },             // '1111110', '1111111'

  169. };

  170. 

  171. static const int8_t vp8_pred8x8c_tree[3][2] =

  172. {

  173.     { -DC_PRED8x8, 1 },                 // '0'

  174.      { -VERT_PRED8x8, 2 },              // '10

  175.       { -HOR_PRED8x8, -PLANE_PRED8x8 }, // '110', '111'

  176. };

  177. 

  178. static const uint8_t vp8_pred8x8c_prob_intra[3] = { 142, 114, 183 };

  179. static const uint8_t vp8_pred8x8c_prob_inter[3] = { 162, 101, 204 };

  180. 

  181. static const uint8_t vp8_pred4x4_prob_inter[9] =

  182. {

  183.     120, 90, 79, 133, 87, 85, 80, 111, 151

  184. };

  185. 

  186. static const uint8_t vp8_pred4x4_prob_intra[10][10][9] =

  187. {

  188.     {

  189.         {  39,  53, 200,  87,  26,  21,  43, 232, 171 },

  190.         {  56,  34,  51, 104, 114, 102,  29,  93,  77 },

  191.         {  88,  88, 147, 150,  42,  46,  45, 196, 205 },

  192.         { 107,  54,  32,  26,  51,   1,  81,  43,  31 },

  193.         {  39,  28,  85, 171,  58, 165,  90,  98,  64 },

  194.         {  34,  22, 116, 206,  23,  34,  43, 166,  73 },

  195.         {  34,  19,  21, 102, 132, 188,  16,  76, 124 },

  196.         {  68,  25, 106,  22,  64, 171,  36, 225, 114 },

  197.         {  62,  18,  78,  95,  85,  57,  50,  48,  51 },

  198.         {  43,  97, 183, 117,  85,  38,  35, 179,  61 },

  199.     },

  200.     {

  201.         { 112, 113,  77,  85, 179, 255,  38, 120, 114 },

  202.         {  40,  42,   1, 196, 245, 209,  10,  25, 109 },

  203.         { 193, 101,  35, 159, 215, 111,  89,  46, 111 },

  204.         { 100,  80,   8,  43, 154,   1,  51,  26,  71 },

  205.         {  88,  43,  29, 140, 166, 213,  37,  43, 154 },

  206.         {  61,  63,  30, 155,  67,  45,  68,   1, 209 },

  207.         {  41,  40,   5, 102, 211, 183,   4,   1, 221 },

  208.         { 142,  78,  78,  16, 255, 128,  34, 197, 171 },

  209.         {  51,  50,  17, 168, 209, 192,  23,  25,  82 },

  210.         {  60, 148,  31, 172, 219, 228,  21,  18, 111 },

  211.     },

  212.     {

  213.         { 175,  69, 143,  80,  85,  82,  72, 155, 103 },

  214.         {  56,  58,  10, 171, 218, 189,  17,  13, 152 },

  215.         { 231, 120,  48,  89, 115, 113, 120, 152, 112 },

  216.         { 144,  71,  10,  38, 171, 213, 144,  34,  26 },

  217.         { 114,  26,  17, 163,  44, 195,  21,  10, 173 },

  218.         { 121,  24,  80, 195,  26,  62,  44,  64,  85 },

  219.         {  63,  20,   8, 114, 114, 208,  12,   9, 226 },

  220.         { 170,  46,  55,  19, 136, 160,  33, 206,  71 },

  221.         {  81,  40,  11,  96, 182,  84,  29,  16,  36 },

  222.         { 152, 179,  64, 126, 170, 118,  46,  70,  95 },

  223.     },

  224.     {

  225.         {  75,  79, 123,  47,  51, 128,  81, 171,   1 },

  226.         {  57,  17,   5,  71, 102,  57,  53,  41,  49 },

  227.         { 125,  98,  42,  88, 104,  85, 117, 175,  82 },

  228.         { 115,  21,   2,  10, 102, 255, 166,  23,   6 },

  229.         {  38,  33,  13, 121,  57,  73,  26,   1,  85 },

  230.         {  41,  10,  67, 138,  77, 110,  90,  47, 114 },

  231.         {  57,  18,  10, 102, 102, 213,  34,  20,  43 },

  232.         { 101,  29,  16,  10,  85, 128, 101, 196,  26 },

  233.         { 117,  20,  15,  36, 163, 128,  68,   1,  26 },

  234.         {  95,  84,  53,  89, 128, 100, 113, 101,  45 },

  235.     },

  236.     {

  237.         {  63,  59,  90, 180,  59, 166,  93,  73, 154 },

  238.         {  40,  40,  21, 116, 143, 209,  34,  39, 175 },

  239.         { 138,  31,  36, 171,  27, 166,  38,  44, 229 },

  240.         {  57,  46,  22,  24, 128,   1,  54,  17,  37 },

  241.         {  47,  15,  16, 183,  34, 223,  49,  45, 183 },

  242.         {  46,  17,  33, 183,   6,  98,  15,  32, 183 },

  243.         {  40,   3,   9, 115,  51, 192,  18,   6, 223 },

  244.         {  65,  32,  73, 115,  28, 128,  23, 128, 205 },

  245.         {  87,  37,   9, 115,  59,  77,  64,  21,  47 },

  246.         {  67,  87,  58, 169,  82, 115,  26,  59, 179 },

  247.     },

  248.     {

  249.         {  54,  57, 112, 184,   5,  41,  38, 166, 213 },

  250.         {  30,  34,  26, 133, 152, 116,  10,  32, 134 },

  251.         { 104,  55,  44, 218,   9,  54,  53, 130, 226 },

  252.         {  75,  32,  12,  51, 192, 255, 160,  43,  51 },

  253.         {  39,  19,  53, 221,  26, 114,  32,  73, 255 },

  254.         {  31,   9,  65, 234,   2,  15,   1, 118,  73 },

  255.         {  56,  21,  23, 111,  59, 205,  45,  37, 192 },

  256.         {  88,  31,  35,  67, 102,  85,  55, 186,  85 },

  257.         {  55,  38,  70, 124,  73, 102,   1,  34,  98 },

  258.         {  64,  90,  70, 205,  40,  41,  23,  26,  57 },

  259.     },

  260.     {

  261.         {  86,  40,  64, 135, 148, 224,  45, 183, 128 },

  262.         {  22,  26,  17, 131, 240, 154,  14,   1, 209 },

  263.         { 164,  50,  31, 137, 154, 133,  25,  35, 218 },

  264.         {  83,  12,  13,  54, 192, 255,  68,  47,  28 },

  265.         {  45,  16,  21,  91,  64, 222,   7,   1, 197 },

  266.         {  56,  21,  39, 155,  60, 138,  23, 102, 213 },

  267.         {  18,  11,   7,  63, 144, 171,   4,   4, 246 },

  268.         {  85,  26,  85,  85, 128, 128,  32, 146, 171 },

  269.         {  35,  27,  10, 146, 174, 171,  12,  26, 128 },

  270.         {  51, 103,  44, 131, 131, 123,  31,   6, 158 },

  271.     },

  272.     {

  273.         {  68,  45, 128,  34,   1,  47,  11, 245, 171 },

  274.         {  62,  17,  19,  70, 146,  85,  55,  62,  70 },

  275.         { 102,  61,  71,  37,  34,  53,  31, 243, 192 },

  276.         {  75,  15,   9,   9,  64, 255, 184, 119,  16 },

  277.         {  37,  43,  37, 154, 100, 163,  85, 160,   1 },

  278.         {  63,   9,  92, 136,  28,  64,  32, 201,  85 },

  279.         {  56,   8,  17, 132, 137, 255,  55, 116, 128 },

  280.         {  86,   6,  28,   5,  64, 255,  25, 248,   1 },

  281.         {  58,  15,  20,  82, 135,  57,  26, 121,  40 },

  282.         {  69,  60,  71,  38,  73, 119,  28, 222,  37 },

  283.     },

  284.     {

  285.         { 101,  75, 128, 139, 118, 146, 116, 128,  85 },

  286.         {  56,  41,  15, 176, 236,  85,  37,   9,  62 },

  287.         { 190,  80,  35,  99, 180,  80, 126,  54,  45 },

  288.         { 146,  36,  19,  30, 171, 255,  97,  27,  20 },

  289.         {  71,  30,  17, 119, 118, 255,  17,  18, 138 },

  290.         { 101,  38,  60, 138,  55,  70,  43,  26, 142 },

  291.         {  32,  41,  20, 117, 151, 142,  20,  21, 163 },

  292.         { 138,  45,  61,  62, 219,   1,  81, 188,  64 },

  293.         { 112,  19,  12,  61, 195, 128,  48,   4,  24 },

  294.         {  85, 126,  47,  87, 176,  51,  41,  20,  32 },

  295.     },

  296.     {

  297.         {  66, 102, 167,  99,  74,  62,  40, 234, 128 },

  298.         {  41,  53,   9, 178, 241, 141,  26,   8, 107 },

  299.         { 134, 183,  89, 137,  98, 101, 106, 165, 148 },

  300.         { 104,  79,  12,  27, 217, 255,  87,  17,   7 },

  301.         {  74,  43,  26, 146,  73, 166,  49,  23, 157 },

  302.         {  65,  38, 105, 160,  51,  52,  31, 115, 128 },

  303.         {  47,  41,  14, 110, 182, 183,  21,  17, 194 },

  304.         {  87,  68,  71,  44, 114,  51,  15, 186,  23 },

  305.         {  66,  45,  25, 102, 197, 189,  23,  18,  22 },

  306.         {  72, 187, 100, 130, 157, 111,  32,  75,  80 },

  307.     },

  308. };

  309. 

  310. static const int8_t vp8_segmentid_tree[][2] =

  311. {

  312.     { 1, 2 },

  313.      { -0, -1 },    // '00', '01'

  314.      { -2, -3 },    // '10', '11'

  315. };

  316. 

  317. static const uint8_t vp8_coeff_band[16] =

  318. {

  319.     0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7

  320. };

  321. 

  322. static const int8_t vp8_coeff_tree[NUM_DCT_TOKENS-1][2] =

  323. {

  324.     { -DCT_EOB, 1 },                // '0'

  325.      { -DCT_0, 2 },                 // '10'

  326.       { -DCT_1, 3 },                // '110'

  327.        { 4, 6 },

  328.         { -DCT_2, 5 },              // '11100'

  329.          { -DCT_3, -DCT_4 },        // '111010', '111011'

  330.         { 7, 8 },

  331.          { -DCT_CAT1, -DCT_CAT2 },  // '111100', '111101'

  332.          { 9, 10 },

  333.           { -DCT_CAT3, -DCT_CAT4 }, // '1111100', '1111101'

  334.           { -DCT_CAT5, -DCT_CAT6 }, // '1111110', '1111111'

  335. };

  336. 

  337. static const uint8_t vp8_dct_cat1_prob[] = { 159, 0 };

  338. static const uint8_t vp8_dct_cat2_prob[] = { 165, 145, 0 };

  339. static const uint8_t vp8_dct_cat3_prob[] = { 173, 148, 140, 0 };

  340. static const uint8_t vp8_dct_cat4_prob[] = { 176, 155, 140, 135, 0 };

  341. static const uint8_t vp8_dct_cat5_prob[] = { 180, 157, 141, 134, 130, 0 };

  342. static const uint8_t vp8_dct_cat6_prob[] = { 254, 254, 243, 230, 196, 177, 153, 140, 133, 130, 129, 0 };

  343. 

  344. static const uint8_t * const vp8_dct_cat_prob[6] =

  345. {

  346.     vp8_dct_cat1_prob,

  347.     vp8_dct_cat2_prob,

  348.     vp8_dct_cat3_prob,

  349.     vp8_dct_cat4_prob,

  350.     vp8_dct_cat5_prob,

  351.     vp8_dct_cat6_prob,

  352. };

  353. 

  354. static const uint8_t vp8_dct_cat_offset[6] = { 5, 7, 11, 19, 35, 67 };

  355. 

  356. static const uint8_t vp8_token_default_probs[4][8][3][NUM_DCT_TOKENS-1] =

  357. {

  358.     {

  359.         {

  360.             { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },

  361.             { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },

  362.             { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },

  363.         },

  364.         {

  365.             { 253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128 },

  366.             { 189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128 },

  367.             { 106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128 },

  368.         },

  369.         {

  370.             {   1,  98, 248, 255, 236, 226, 255, 255, 128, 128, 128 },

  371.             { 181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128 },

  372.             {  78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128 },

  373.         },

  374.         {

  375.             {   1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128 },

  376.             { 184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128 },

  377.             {  77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128 },

  378.         },

  379.         {

  380.             {   1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128 },

  381.             { 170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128 },

  382.             {  37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128 },

  383.         },

  384.         {

  385.             {   1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128 },

  386.             { 207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128 },

  387.             { 102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128 },

  388.         },

  389.         {

  390.             {   1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128 },

  391.             { 177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128 },

  392.             {  80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128 },

  393.         },

  394.         {

  395.             {   1,   1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },

  396.             { 246,   1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },

  397.             { 255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },

  398.         },

  399.     },

  400.     {

  401.         {

  402.             { 198,  35, 237, 223, 193, 187, 162, 160, 145, 155,  62 },

  403.             { 131,  45, 198, 221, 172, 176, 220, 157, 252, 221,   1 },

  404.             {  68,  47, 146, 208, 149, 167, 221, 162, 255, 223, 128 },

  405.         },

  406.         {

  407.             {   1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128 },

  408.             { 184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128 },

  409.             {  81,  99, 181, 242, 176, 190, 249, 202, 255, 255, 128 },

  410.         },

  411.         {

  412.             {   1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128 },

  413.             {  99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128 },

  414.             {  23,  91, 163, 242, 170, 187, 247, 210, 255, 255, 128 },

  415.         },

  416.         {

  417.             {   1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128 },

  418.             { 109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128 },

  419.             {  44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128 },

  420.         },

  421.         {

  422.             {   1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128 },

  423.             {  94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128 },

  424.             {  22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128 },

  425.         },

  426.         {

  427.             {   1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128 },

  428.             { 124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128 },

  429.             {  35,  77, 181, 251, 193, 211, 255, 205, 128, 128, 128 },

  430.         },

  431.         {

  432.             {   1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128 },

  433.             { 121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128 },

  434.             {  45,  99, 188, 251, 195, 217, 255, 224, 128, 128, 128 },

  435.         },

  436.         {

  437.             {   1,   1, 251, 255, 213, 255, 128, 128, 128, 128, 128 },

  438.             { 203,   1, 248, 255, 255, 128, 128, 128, 128, 128, 128 },

  439.             { 137,   1, 177, 255, 224, 255, 128, 128, 128, 128, 128 },

  440.         },

  441.     },

  442.     {

  443.         {

  444.             { 253,   9, 248, 251, 207, 208, 255, 192, 128, 128, 128 },

  445.             { 175,  13, 224, 243, 193, 185, 249, 198, 255, 255, 128 },

  446.             {  73,  17, 171, 221, 161, 179, 236, 167, 255, 234, 128 },

  447.         },

  448.         {

  449.             {   1,  95, 247, 253, 212, 183, 255, 255, 128, 128, 128 },

  450.             { 239,  90, 244, 250, 211, 209, 255, 255, 128, 128, 128 },

  451.             { 155,  77, 195, 248, 188, 195, 255, 255, 128, 128, 128 },

  452.         },

  453.         {

  454.             {   1,  24, 239, 251, 218, 219, 255, 205, 128, 128, 128 },

  455.             { 201,  51, 219, 255, 196, 186, 128, 128, 128, 128, 128 },

  456.             {  69,  46, 190, 239, 201, 218, 255, 228, 128, 128, 128 },

  457.         },

  458.         {

  459.             {   1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128 },

  460.             { 223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128 },

  461.             { 141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128 },

  462.         },

  463.         {

  464.             {   1,  16, 248, 255, 255, 128, 128, 128, 128, 128, 128 },

  465.             { 190,  36, 230, 255, 236, 255, 128, 128, 128, 128, 128 },

  466.             { 149,   1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },

  467.         },

  468.         {

  469.             {   1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128 },

  470.             { 247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128 },

  471.             { 240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128 },

  472.         },

  473.         {

  474.             {   1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128 },

  475.             { 213,  62, 250, 255, 255, 128, 128, 128, 128, 128, 128 },

  476.             {  55,  93, 255, 128, 128, 128, 128, 128, 128, 128, 128 },

  477.         },

  478.         {

  479.             { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },

  480.             { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },

  481.             { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },

  482.         },

  483.     },

  484.     {

  485.         {

  486.             { 202,  24, 213, 235, 186, 191, 220, 160, 240, 175, 255 },

  487.             { 126,  38, 182, 232, 169, 184, 228, 174, 255, 187, 128 },

  488.             {  61,  46, 138, 219, 151, 178, 240, 170, 255, 216, 128 },

  489.         },

  490.         {

  491.             {   1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128 },

  492.             { 166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128 },

  493.             {  39,  77, 162, 232, 172, 180, 245, 178, 255, 255, 128 },

  494.         },

  495.         {

  496.             {   1,  52, 220, 246, 198, 199, 249, 220, 255, 255, 128 },

  497.             { 124,  74, 191, 243, 183, 193, 250, 221, 255, 255, 128 },

  498.             {  24,  71, 130, 219, 154, 170, 243, 182, 255, 255, 128 },

  499.         },

  500.         {

  501.             {   1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128 },

  502.             { 149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128 },

  503.             {  28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128 },

  504.         },

  505.         {

  506.             {   1,  81, 230, 252, 204, 203, 255, 192, 128, 128, 128 },

  507.             { 123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128 },

  508.             {  20,  95, 153, 243, 164, 173, 255, 203, 128, 128, 128 },

  509.         },

  510.         {

  511.             {   1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128 },

  512.             { 168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128 },

  513.             {  47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128 },

  514.         },

  515.         {

  516.             {   1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128 },

  517.             { 141,  84, 213, 252, 201, 202, 255, 219, 128, 128, 128 },

  518.             {  42,  80, 160, 240, 162, 185, 255, 205, 128, 128, 128 },

  519.         },

  520.         {

  521.             {   1,   1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },

  522.             { 244,   1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },

  523.             { 238,   1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },

  524.         },

  525.     },

  526. };

  527. 

  528. static const uint8_t vp8_token_update_probs[4][8][3][NUM_DCT_TOKENS-1] =

  529. {

  530.     {

  531.         {

  532.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  533.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  534.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  535.         },

  536.         {

  537.             { 176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  538.             { 223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255 },

  539.             { 249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },

  540.         },

  541.         {

  542.             { 255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255 },

  543.             { 234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  544.             { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  545.         },

  546.         {

  547.             { 255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  548.             { 239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  549.             { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  550.         },

  551.         {

  552.             { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  553.             { 251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  554.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  555.         },

  556.         {

  557.             { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  558.             { 251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  559.             { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  560.         },

  561.         {

  562.             { 255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255 },

  563.             { 250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255 },

  564.             { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  565.         },

  566.         {

  567.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  568.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  569.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  570.         },

  571.     },

  572.     {

  573.         {

  574.             { 217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  575.             { 225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255 },

  576.             { 234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255 },

  577.         },

  578.         {

  579.             { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  580.             { 223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  581.             { 238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255 },

  582.         },

  583.         {

  584.             { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  585.             { 249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  586.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  587.         },

  588.         {

  589.             { 255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  590.             { 247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  591.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  592.         },

  593.         {

  594.             { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  595.             { 252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  596.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  597.         },

  598.         {

  599.             { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  600.             { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  601.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  602.         },

  603.         {

  604.             { 255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },

  605.             { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  606.             { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  607.         },

  608.         {

  609.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  610.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  611.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  612.         },

  613.     },

  614.     {

  615.         {

  616.             { 186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255 },

  617.             { 234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255 },

  618.             { 251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255 },

  619.         },

  620.         {

  621.             { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  622.             { 236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  623.             { 251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255 },

  624.         },

  625.         {

  626.             { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  627.             { 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  628.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  629.         },

  630.         {

  631.             { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  632.             { 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  633.             { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  634.         },

  635.         {

  636.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  637.             { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  638.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  639.         },

  640.         {

  641.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  642.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  643.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  644.         },

  645.         {

  646.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  647.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  648.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  649.         },

  650.         {

  651.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  652.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  653.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  654.         },

  655.     },

  656.     {

  657.         {

  658.             { 248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  659.             { 250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255 },

  660.             { 248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255 },

  661.         },

  662.         {

  663.             { 255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },

  664.             { 246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },

  665.             { 252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255 },

  666.         },

  667.         {

  668.             { 255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255 },

  669.             { 248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },

  670.             { 253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255 },

  671.         },

  672.         {

  673.             { 255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  674.             { 245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  675.             { 253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  676.         },

  677.         {

  678.             { 255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255 },

  679.             { 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  680.             { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  681.         },

  682.         {

  683.             { 255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  684.             { 249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  685.             { 255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },

  686.         },

  687.         {

  688.             { 255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255 },

  689.             { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  690.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  691.         },

  692.         {

  693.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  694.             { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  695.             { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },

  696.         },

  697.     },

  698. };

  699. 

  700. // fixme: copied from h264data.h

  701. static const uint8_t zigzag_scan[16]={

  702.     0+0*4, 1+0*4, 0+1*4, 0+2*4,

  703.     1+1*4, 2+0*4, 3+0*4, 2+1*4,

  704.     1+2*4, 0+3*4, 1+3*4, 2+2*4,

  705.     3+1*4, 3+2*4, 2+3*4, 3+3*4,

  706. };

  707. 

  708. static const uint8_t vp8_dc_qlookup[VP8_MAX_QUANT+1] =

  709. {

  710.       4,   5,   6,   7,   8,   9,  10,  10,  11,  12,  13,  14,  15,  16,  17,  17,

  711.      18,  19,  20,  20,  21,  21,  22,  22,  23,  23,  24,  25,  25,  26,  27,  28,

  712.      29,  30,  31,  32,  33,  34,  35,  36,  37,  37,  38,  39,  40,  41,  42,  43,

  713.      44,  45,  46,  46,  47,  48,  49,  50,  51,  52,  53,  54,  55,  56,  57,  58,

  714.      59,  60,  61,  62,  63,  64,  65,  66,  67,  68,  69,  70,  71,  72,  73,  74,

  715.      75,  76,  76,  77,  78,  79,  80,  81,  82,  83,  84,  85,  86,  87,  88,  89,

  716.      91,  93,  95,  96,  98, 100, 101, 102, 104, 106, 108, 110, 112, 114, 116, 118,

  717.     122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 143, 145, 148, 151, 154, 157,

  718. };

  719. 

  720. static const uint16_t vp8_ac_qlookup[VP8_MAX_QUANT+1] =

  721. {

  722.       4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,  15,  16,  17,  18,  19,

  723.      20,  21,  22,  23,  24,  25,  26,  27,  28,  29,  30,  31,  32,  33,  34,  35,

  724.      36,  37,  38,  39,  40,  41,  42,  43,  44,  45,  46,  47,  48,  49,  50,  51,

  725.      52,  53,  54,  55,  56,  57,  58,  60,  62,  64,  66,  68,  70,  72,  74,  76,

  726.      78,  80,  82,  84,  86,  88,  90,  92,  94,  96,  98, 100, 102, 104, 106, 108,

  727.     110, 112, 114, 116, 119, 122, 125, 128, 131, 134, 137, 140, 143, 146, 149, 152,

  728.     155, 158, 161, 164, 167, 170, 173, 177, 181, 185, 189, 193, 197, 201, 205, 209,

  729.     213, 217, 221, 225, 229, 234, 239, 245, 249, 254, 259, 264, 269, 274, 279, 284,

  730. };

  731. 

  732. static const uint8_t vp8_mv_update_prob[2][19] = {

  733.     { 237,

  734.       246,

  735.       253, 253, 254, 254, 254, 254, 254,

  736.       254, 254, 254, 254, 254, 250, 250, 252, 254, 254 },

  737.     { 231,

  738.       243,

  739.       245, 253, 254, 254, 254, 254, 254,

  740.       254, 254, 254, 254, 254, 251, 251, 254, 254, 254 }

  741. };

  742. 

  743. static const uint8_t vp8_mv_default_prob[2][19] = {

  744.     { 162,

  745.       128,

  746.       225, 146, 172, 147, 214, 39, 156,

  747.       128, 129, 132,  75, 145, 178, 206, 239, 254, 254 },

  748.     { 164,

  749.       128,

  750.       204, 170, 119, 235, 140, 230, 228,

  751.       128, 130, 130,  74, 148, 180, 203, 236, 254, 254 }

  752. };