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FFmpeg/libavcodec/h264_cabac.c

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  1. /*

  2.  * H.26L/H.264/AVC/JVT/14496-10/... cabac decoding

  3.  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

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

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

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

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

  11.  *

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

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

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

  15.  * Lesser General Public License for more details.

  16.  *

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

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

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

  20.  */

  21. 

  22. /**

  23.  * @file

  24.  * H.264 / AVC / MPEG-4 part10 cabac decoding.

  25.  * @author Michael Niedermayer <michaelni@gmx.at>

  26.  */

  27. 

  28. #define CABAC(h) 1

  29. #define UNCHECKED_BITSTREAM_READER 1

  30. #define INT_BIT (CHAR_BIT * sizeof(int))

  31. 

  32. #include "libavutil/attributes.h"

  33. #include "libavutil/avassert.h"

  34. #include "config.h"

  35. #include "cabac.h"

  36. #include "cabac_functions.h"

  37. #include "internal.h"

  38. #include "avcodec.h"

  39. #include "h264dec.h"

  40. #include "h264data.h"

  41. #include "h264_mvpred.h"

  42. #include "mpegutils.h"

  43. 

  44. #if ARCH_X86

  45. #include "x86/h264_cabac.c"

  46. #endif

  47. 

  48. /* Cabac pre state table */

  49. 

  50. static const int8_t cabac_context_init_I[1024][2] =

  51. {

  52.     /* 0 - 10 */

  53.     { 20, -15 }, {  2, 54 },  {  3,  74 }, { 20, -15 },

  54.     {  2,  54 }, {  3, 74 },  { -28,127 }, { -23, 104 },

  55.     { -6,  53 }, { -1, 54 },  {  7,  51 },

  56. 

  57.     /* 11 - 23 unused for I */

  58.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  59.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  60.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  61.     { 0, 0 },

  62. 

  63.     /* 24- 39 */

  64.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  65.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  66.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  67.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  68. 

  69.     /* 40 - 53 */

  70.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  71.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  72.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  73.     { 0, 0 },    { 0, 0 },

  74. 

  75.     /* 54 - 59 */

  76.     { 0, 0 },    { 0, 0 },    { 0, 0 },      { 0, 0 },

  77.     { 0, 0 },    { 0, 0 },

  78. 

  79.     /* 60 - 69 */

  80.     { 0, 41 },   { 0, 63 },   { 0, 63 },     { 0, 63 },

  81.     { -9, 83 },  { 4, 86 },   { 0, 97 },     { -7, 72 },

  82.     { 13, 41 },  { 3, 62 },

  83. 

  84.     /* 70 -> 87 */

  85.     { 0, 11 },   { 1, 55 },   { 0, 69 },     { -17, 127 },

  86.     { -13, 102 },{ 0, 82 },   { -7, 74 },    { -21, 107 },

  87.     { -27, 127 },{ -31, 127 },{ -24, 127 },  { -18, 95 },

  88.     { -27, 127 },{ -21, 114 },{ -30, 127 },  { -17, 123 },

  89.     { -12, 115 },{ -16, 122 },

  90. 

  91.     /* 88 -> 104 */

  92.     { -11, 115 },{ -12, 63 }, { -2, 68 },    { -15, 84 },

  93.     { -13, 104 },{ -3, 70 },  { -8, 93 },    { -10, 90 },

  94.     { -30, 127 },{ -1, 74 },  { -6, 97 },    { -7, 91 },

  95.     { -20, 127 },{ -4, 56 },  { -5, 82 },    { -7, 76 },

  96.     { -22, 125 },

  97. 

  98.     /* 105 -> 135 */

  99.     { -7, 93 },  { -11, 87 }, { -3, 77 },    { -5, 71 },

  100.     { -4, 63 },  { -4, 68 },  { -12, 84 },   { -7, 62 },

  101.     { -7, 65 },  { 8, 61 },   { 5, 56 },     { -2, 66 },

  102.     { 1, 64 },   { 0, 61 },   { -2, 78 },    { 1, 50 },

  103.     { 7, 52 },   { 10, 35 },  { 0, 44 },     { 11, 38 },

  104.     { 1, 45 },   { 0, 46 },   { 5, 44 },     { 31, 17 },

  105.     { 1, 51 },   { 7, 50 },   { 28, 19 },    { 16, 33 },

  106.     { 14, 62 },  { -13, 108 },{ -15, 100 },

  107. 

  108.     /* 136 -> 165 */

  109.     { -13, 101 },{ -13, 91 }, { -12, 94 },   { -10, 88 },

  110.     { -16, 84 }, { -10, 86 }, { -7, 83 },    { -13, 87 },

  111.     { -19, 94 }, { 1, 70 },   { 0, 72 },     { -5, 74 },

  112.     { 18, 59 },  { -8, 102 }, { -15, 100 },  { 0, 95 },

  113.     { -4, 75 },  { 2, 72 },   { -11, 75 },   { -3, 71 },

  114.     { 15, 46 },  { -13, 69 }, { 0, 62 },     { 0, 65 },

  115.     { 21, 37 },  { -15, 72 }, { 9, 57 },     { 16, 54 },

  116.     { 0, 62 },   { 12, 72 },

  117. 

  118.     /* 166 -> 196 */

  119.     { 24, 0 },   { 15, 9 },   { 8, 25 },     { 13, 18 },

  120.     { 15, 9 },   { 13, 19 },  { 10, 37 },    { 12, 18 },

  121.     { 6, 29 },   { 20, 33 },  { 15, 30 },    { 4, 45 },

  122.     { 1, 58 },   { 0, 62 },   { 7, 61 },     { 12, 38 },

  123.     { 11, 45 },  { 15, 39 },  { 11, 42 },    { 13, 44 },

  124.     { 16, 45 },  { 12, 41 },  { 10, 49 },    { 30, 34 },

  125.     { 18, 42 },  { 10, 55 },  { 17, 51 },    { 17, 46 },

  126.     { 0, 89 },   { 26, -19 }, { 22, -17 },

  127. 

  128.     /* 197 -> 226 */

  129.     { 26, -17 }, { 30, -25 }, { 28, -20 },   { 33, -23 },

  130.     { 37, -27 }, { 33, -23 }, { 40, -28 },   { 38, -17 },

  131.     { 33, -11 }, { 40, -15 }, { 41, -6 },    { 38, 1 },

  132.     { 41, 17 },  { 30, -6 },  { 27, 3 },     { 26, 22 },

  133.     { 37, -16 }, { 35, -4 },  { 38, -8 },    { 38, -3 },

  134.     { 37, 3 },   { 38, 5 },   { 42, 0 },     { 35, 16 },

  135.     { 39, 22 },  { 14, 48 },  { 27, 37 },    { 21, 60 },

  136.     { 12, 68 },  { 2, 97 },

  137. 

  138.     /* 227 -> 251 */

  139.     { -3, 71 },  { -6, 42 },  { -5, 50 },    { -3, 54 },

  140.     { -2, 62 },  { 0, 58 },   { 1, 63 },     { -2, 72 },

  141.     { -1, 74 },  { -9, 91 },  { -5, 67 },    { -5, 27 },

  142.     { -3, 39 },  { -2, 44 },  { 0, 46 },     { -16, 64 },

  143.     { -8, 68 },  { -10, 78 }, { -6, 77 },    { -10, 86 },

  144.     { -12, 92 }, { -15, 55 }, { -10, 60 },   { -6, 62 },

  145.     { -4, 65 },

  146. 

  147.     /* 252 -> 275 */

  148.     { -12, 73 }, { -8, 76 },  { -7, 80 },    { -9, 88 },

  149.     { -17, 110 },{ -11, 97 }, { -20, 84 },   { -11, 79 },

  150.     { -6, 73 },  { -4, 74 },  { -13, 86 },   { -13, 96 },

  151.     { -11, 97 }, { -19, 117 },{ -8, 78 },    { -5, 33 },

  152.     { -4, 48 },  { -2, 53 },  { -3, 62 },    { -13, 71 },

  153.     { -10, 79 }, { -12, 86 }, { -13, 90 },   { -14, 97 },

  154. 

  155.     /* 276 a bit special (not used, bypass is used instead) */

  156.     { 0, 0 },

  157. 

  158.     /* 277 -> 307 */

  159.     { -6, 93 },  { -6, 84 },  { -8, 79 },    { 0, 66 },

  160.     { -1, 71 },  { 0, 62 },   { -2, 60 },    { -2, 59 },

  161.     { -5, 75 },  { -3, 62 },  { -4, 58 },    { -9, 66 },

  162.     { -1, 79 },  { 0, 71 },   { 3, 68 },     { 10, 44 },

  163.     { -7, 62 },  { 15, 36 },  { 14, 40 },    { 16, 27 },

  164.     { 12, 29 },  { 1, 44 },   { 20, 36 },    { 18, 32 },

  165.     { 5, 42 },   { 1, 48 },   { 10, 62 },    { 17, 46 },

  166.     { 9, 64 },   { -12, 104 },{ -11, 97 },

  167. 

  168.     /* 308 -> 337 */

  169.     { -16, 96 }, { -7, 88 },  { -8, 85 },    { -7, 85 },

  170.     { -9, 85 },  { -13, 88 }, { 4, 66 },     { -3, 77 },

  171.     { -3, 76 },  { -6, 76 },  { 10, 58 },    { -1, 76 },

  172.     { -1, 83 },  { -7, 99 },  { -14, 95 },   { 2, 95 },

  173.     { 0, 76 },   { -5, 74 },  { 0, 70 },     { -11, 75 },

  174.     { 1, 68 },   { 0, 65 },   { -14, 73 },   { 3, 62 },

  175.     { 4, 62 },   { -1, 68 },  { -13, 75 },   { 11, 55 },

  176.     { 5, 64 },   { 12, 70 },

  177. 

  178.     /* 338 -> 368 */

  179.     { 15, 6 },   { 6, 19 },   { 7, 16 },     { 12, 14 },

  180.     { 18, 13 },  { 13, 11 },  { 13, 15 },    { 15, 16 },

  181.     { 12, 23 },  { 13, 23 },  { 15, 20 },    { 14, 26 },

  182.     { 14, 44 },  { 17, 40 },  { 17, 47 },    { 24, 17 },

  183.     { 21, 21 },  { 25, 22 },  { 31, 27 },    { 22, 29 },

  184.     { 19, 35 },  { 14, 50 },  { 10, 57 },    { 7, 63 },

  185.     { -2, 77 },  { -4, 82 },  { -3, 94 },    { 9, 69 },

  186.     { -12, 109 },{ 36, -35 }, { 36, -34 },

  187. 

  188.     /* 369 -> 398 */

  189.     { 32, -26 }, { 37, -30 }, { 44, -32 },   { 34, -18 },

  190.     { 34, -15 }, { 40, -15 }, { 33, -7 },    { 35, -5 },

  191.     { 33, 0 },   { 38, 2 },   { 33, 13 },    { 23, 35 },

  192.     { 13, 58 },  { 29, -3 },  { 26, 0 },     { 22, 30 },

  193.     { 31, -7 },  { 35, -15 }, { 34, -3 },    { 34, 3 },

  194.     { 36, -1 },  { 34, 5 },   { 32, 11 },    { 35, 5 },

  195.     { 34, 12 },  { 39, 11 },  { 30, 29 },    { 34, 26 },

  196.     { 29, 39 },  { 19, 66 },

  197. 

  198.     /* 399 -> 435 */

  199.     {  31,  21 }, {  31,  31 }, {  25,  50 },

  200.     { -17, 120 }, { -20, 112 }, { -18, 114 }, { -11,  85 },

  201.     { -15,  92 }, { -14,  89 }, { -26,  71 }, { -15,  81 },

  202.     { -14,  80 }, {   0,  68 }, { -14,  70 }, { -24,  56 },

  203.     { -23,  68 }, { -24,  50 }, { -11,  74 }, {  23, -13 },

  204.     {  26, -13 }, {  40, -15 }, {  49, -14 }, {  44,   3 },

  205.     {  45,   6 }, {  44,  34 }, {  33,  54 }, {  19,  82 },

  206.     {  -3,  75 }, {  -1,  23 }, {   1,  34 }, {   1,  43 },

  207.     {   0,  54 }, {  -2,  55 }, {   0,  61 }, {   1,  64 },

  208.     {   0,  68 }, {  -9,  92 },

  209. 

  210.     /* 436 -> 459 */

  211.     { -14, 106 }, { -13,  97 }, { -15,  90 }, { -12,  90 },

  212.     { -18,  88 }, { -10,  73 }, {  -9,  79 }, { -14,  86 },

  213.     { -10,  73 }, { -10,  70 }, { -10,  69 }, {  -5,  66 },

  214.     {  -9,  64 }, {  -5,  58 }, {   2,  59 }, {  21, -10 },

  215.     {  24, -11 }, {  28,  -8 }, {  28,  -1 }, {  29,   3 },

  216.     {  29,   9 }, {  35,  20 }, {  29,  36 }, {  14,  67 },

  217. 

  218.     /* 460 -> 1024 */

  219.     { -17, 123 }, { -12, 115 }, { -16, 122 }, { -11, 115 },

  220.     { -12,  63 }, {  -2,  68 }, { -15,  84 }, { -13, 104 },

  221.     {  -3,  70 }, {  -8,  93 }, { -10,  90 }, { -30, 127 },

  222.     { -17, 123 }, { -12, 115 }, { -16, 122 }, { -11, 115 },

  223.     { -12,  63 }, {  -2,  68 }, { -15,  84 }, { -13, 104 },

  224.     {  -3,  70 }, {  -8,  93 }, { -10,  90 }, { -30, 127 },

  225.     {  -7,  93 }, { -11,  87 }, {  -3,  77 }, {  -5,  71 },

  226.     {  -4,  63 }, {  -4,  68 }, { -12,  84 }, {  -7,  62 },

  227.     {  -7,  65 }, {   8,  61 }, {   5,  56 }, {  -2,  66 },

  228.     {   1,  64 }, {   0,  61 }, {  -2,  78 }, {   1,  50 },

  229.     {   7,  52 }, {  10,  35 }, {   0,  44 }, {  11,  38 },

  230.     {   1,  45 }, {   0,  46 }, {   5,  44 }, {  31,  17 },

  231.     {   1,  51 }, {   7,  50 }, {  28,  19 }, {  16,  33 },

  232.     {  14,  62 }, { -13, 108 }, { -15, 100 }, { -13, 101 },

  233.     { -13,  91 }, { -12,  94 }, { -10,  88 }, { -16,  84 },

  234.     { -10,  86 }, {  -7,  83 }, { -13,  87 }, { -19,  94 },

  235.     {   1,  70 }, {   0,  72 }, {  -5,  74 }, {  18,  59 },

  236.     {  -7,  93 }, { -11,  87 }, {  -3,  77 }, {  -5,  71 },

  237.     {  -4,  63 }, {  -4,  68 }, { -12,  84 }, {  -7,  62 },

  238.     {  -7,  65 }, {   8,  61 }, {   5,  56 }, {  -2,  66 },

  239.     {   1,  64 }, {   0,  61 }, {  -2,  78 }, {   1,  50 },

  240.     {   7,  52 }, {  10,  35 }, {   0,  44 }, {  11,  38 },

  241.     {   1,  45 }, {   0,  46 }, {   5,  44 }, {  31,  17 },

  242.     {   1,  51 }, {   7,  50 }, {  28,  19 }, {  16,  33 },

  243.     {  14,  62 }, { -13, 108 }, { -15, 100 }, { -13, 101 },

  244.     { -13,  91 }, { -12,  94 }, { -10,  88 }, { -16,  84 },

  245.     { -10,  86 }, {  -7,  83 }, { -13,  87 }, { -19,  94 },

  246.     {   1,  70 }, {   0,  72 }, {  -5,  74 }, {  18,  59 },

  247.     {  24,   0 }, {  15,   9 }, {   8,  25 }, {  13,  18 },

  248.     {  15,   9 }, {  13,  19 }, {  10,  37 }, {  12,  18 },

  249.     {   6,  29 }, {  20,  33 }, {  15,  30 }, {   4,  45 },

  250.     {   1,  58 }, {   0,  62 }, {   7,  61 }, {  12,  38 },

  251.     {  11,  45 }, {  15,  39 }, {  11,  42 }, {  13,  44 },

  252.     {  16,  45 }, {  12,  41 }, {  10,  49 }, {  30,  34 },

  253.     {  18,  42 }, {  10,  55 }, {  17,  51 }, {  17,  46 },

  254.     {   0,  89 }, {  26, -19 }, {  22, -17 }, {  26, -17 },

  255.     {  30, -25 }, {  28, -20 }, {  33, -23 }, {  37, -27 },

  256.     {  33, -23 }, {  40, -28 }, {  38, -17 }, {  33, -11 },

  257.     {  40, -15 }, {  41,  -6 }, {  38,   1 }, {  41,  17 },

  258.     {  24,   0 }, {  15,   9 }, {   8,  25 }, {  13,  18 },

  259.     {  15,   9 }, {  13,  19 }, {  10,  37 }, {  12,  18 },

  260.     {   6,  29 }, {  20,  33 }, {  15,  30 }, {   4,  45 },

  261.     {   1,  58 }, {   0,  62 }, {   7,  61 }, {  12,  38 },

  262.     {  11,  45 }, {  15,  39 }, {  11,  42 }, {  13,  44 },

  263.     {  16,  45 }, {  12,  41 }, {  10,  49 }, {  30,  34 },

  264.     {  18,  42 }, {  10,  55 }, {  17,  51 }, {  17,  46 },

  265.     {   0,  89 }, {  26, -19 }, {  22, -17 }, {  26, -17 },

  266.     {  30, -25 }, {  28, -20 }, {  33, -23 }, {  37, -27 },

  267.     {  33, -23 }, {  40, -28 }, {  38, -17 }, {  33, -11 },

  268.     {  40, -15 }, {  41,  -6 }, {  38,   1 }, {  41,  17 },

  269.     { -17, 120 }, { -20, 112 }, { -18, 114 }, { -11,  85 },

  270.     { -15,  92 }, { -14,  89 }, { -26,  71 }, { -15,  81 },

  271.     { -14,  80 }, {   0,  68 }, { -14,  70 }, { -24,  56 },

  272.     { -23,  68 }, { -24,  50 }, { -11,  74 }, { -14, 106 },

  273.     { -13,  97 }, { -15,  90 }, { -12,  90 }, { -18,  88 },

  274.     { -10,  73 }, {  -9,  79 }, { -14,  86 }, { -10,  73 },

  275.     { -10,  70 }, { -10,  69 }, {  -5,  66 }, {  -9,  64 },

  276.     {  -5,  58 }, {   2,  59 }, {  23, -13 }, {  26, -13 },

  277.     {  40, -15 }, {  49, -14 }, {  44,   3 }, {  45,   6 },

  278.     {  44,  34 }, {  33,  54 }, {  19,  82 }, {  21, -10 },

  279.     {  24, -11 }, {  28,  -8 }, {  28,  -1 }, {  29,   3 },

  280.     {  29,   9 }, {  35,  20 }, {  29,  36 }, {  14,  67 },

  281.     {  -3,  75 }, {  -1,  23 }, {   1,  34 }, {   1,  43 },

  282.     {   0,  54 }, {  -2,  55 }, {   0,  61 }, {   1,  64 },

  283.     {   0,  68 }, {  -9,  92 }, { -17, 120 }, { -20, 112 },

  284.     { -18, 114 }, { -11,  85 }, { -15,  92 }, { -14,  89 },

  285.     { -26,  71 }, { -15,  81 }, { -14,  80 }, {   0,  68 },

  286.     { -14,  70 }, { -24,  56 }, { -23,  68 }, { -24,  50 },

  287.     { -11,  74 }, { -14, 106 }, { -13,  97 }, { -15,  90 },

  288.     { -12,  90 }, { -18,  88 }, { -10,  73 }, {  -9,  79 },

  289.     { -14,  86 }, { -10,  73 }, { -10,  70 }, { -10,  69 },

  290.     {  -5,  66 }, {  -9,  64 }, {  -5,  58 }, {   2,  59 },

  291.     {  23, -13 }, {  26, -13 }, {  40, -15 }, {  49, -14 },

  292.     {  44,   3 }, {  45,   6 }, {  44,  34 }, {  33,  54 },

  293.     {  19,  82 }, {  21, -10 }, {  24, -11 }, {  28,  -8 },

  294.     {  28,  -1 }, {  29,   3 }, {  29,   9 }, {  35,  20 },

  295.     {  29,  36 }, {  14,  67 }, {  -3,  75 }, {  -1,  23 },

  296.     {   1,  34 }, {   1,  43 }, {   0,  54 }, {  -2,  55 },

  297.     {   0,  61 }, {   1,  64 }, {   0,  68 }, {  -9,  92 },

  298.     {  -6,  93 }, {  -6,  84 }, {  -8,  79 }, {   0,  66 },

  299.     {  -1,  71 }, {   0,  62 }, {  -2,  60 }, {  -2,  59 },

  300.     {  -5,  75 }, {  -3,  62 }, {  -4,  58 }, {  -9,  66 },

  301.     {  -1,  79 }, {   0,  71 }, {   3,  68 }, {  10,  44 },

  302.     {  -7,  62 }, {  15,  36 }, {  14,  40 }, {  16,  27 },

  303.     {  12,  29 }, {   1,  44 }, {  20,  36 }, {  18,  32 },

  304.     {   5,  42 }, {   1,  48 }, {  10,  62 }, {  17,  46 },

  305.     {   9,  64 }, { -12, 104 }, { -11,  97 }, { -16,  96 },

  306.     {  -7,  88 }, {  -8,  85 }, {  -7,  85 }, {  -9,  85 },

  307.     { -13,  88 }, {   4,  66 }, {  -3,  77 }, {  -3,  76 },

  308.     {  -6,  76 }, {  10,  58 }, {  -1,  76 }, {  -1,  83 },

  309.     {  -6,  93 }, {  -6,  84 }, {  -8,  79 }, {   0,  66 },

  310.     {  -1,  71 }, {   0,  62 }, {  -2,  60 }, {  -2,  59 },

  311.     {  -5,  75 }, {  -3,  62 }, {  -4,  58 }, {  -9,  66 },

  312.     {  -1,  79 }, {   0,  71 }, {   3,  68 }, {  10,  44 },

  313.     {  -7,  62 }, {  15,  36 }, {  14,  40 }, {  16,  27 },

  314.     {  12,  29 }, {   1,  44 }, {  20,  36 }, {  18,  32 },

  315.     {   5,  42 }, {   1,  48 }, {  10,  62 }, {  17,  46 },

  316.     {   9,  64 }, { -12, 104 }, { -11,  97 }, { -16,  96 },

  317.     {  -7,  88 }, {  -8,  85 }, {  -7,  85 }, {  -9,  85 },

  318.     { -13,  88 }, {   4,  66 }, {  -3,  77 }, {  -3,  76 },

  319.     {  -6,  76 }, {  10,  58 }, {  -1,  76 }, {  -1,  83 },

  320.     {  15,   6 }, {   6,  19 }, {   7,  16 }, {  12,  14 },

  321.     {  18,  13 }, {  13,  11 }, {  13,  15 }, {  15,  16 },

  322.     {  12,  23 }, {  13,  23 }, {  15,  20 }, {  14,  26 },

  323.     {  14,  44 }, {  17,  40 }, {  17,  47 }, {  24,  17 },

  324.     {  21,  21 }, {  25,  22 }, {  31,  27 }, {  22,  29 },

  325.     {  19,  35 }, {  14,  50 }, {  10,  57 }, {   7,  63 },

  326.     {  -2,  77 }, {  -4,  82 }, {  -3,  94 }, {   9,  69 },

  327.     { -12, 109 }, {  36, -35 }, {  36, -34 }, {  32, -26 },

  328.     {  37, -30 }, {  44, -32 }, {  34, -18 }, {  34, -15 },

  329.     {  40, -15 }, {  33,  -7 }, {  35,  -5 }, {  33,   0 },

  330.     {  38,   2 }, {  33,  13 }, {  23,  35 }, {  13,  58 },

  331.     {  15,   6 }, {   6,  19 }, {   7,  16 }, {  12,  14 },

  332.     {  18,  13 }, {  13,  11 }, {  13,  15 }, {  15,  16 },

  333.     {  12,  23 }, {  13,  23 }, {  15,  20 }, {  14,  26 },

  334.     {  14,  44 }, {  17,  40 }, {  17,  47 }, {  24,  17 },

  335.     {  21,  21 }, {  25,  22 }, {  31,  27 }, {  22,  29 },

  336.     {  19,  35 }, {  14,  50 }, {  10,  57 }, {   7,  63 },

  337.     {  -2,  77 }, {  -4,  82 }, {  -3,  94 }, {   9,  69 },

  338.     { -12, 109 }, {  36, -35 }, {  36, -34 }, {  32, -26 },

  339.     {  37, -30 }, {  44, -32 }, {  34, -18 }, {  34, -15 },

  340.     {  40, -15 }, {  33,  -7 }, {  35,  -5 }, {  33,   0 },

  341.     {  38,   2 }, {  33,  13 }, {  23,  35 }, {  13,  58 },

  342.     {  -3,  71 }, {  -6,  42 }, {  -5,  50 }, {  -3,  54 },

  343.     {  -2,  62 }, {   0,  58 }, {   1,  63 }, {  -2,  72 },

  344.     {  -1,  74 }, {  -9,  91 }, {  -5,  67 }, {  -5,  27 },

  345.     {  -3,  39 }, {  -2,  44 }, {   0,  46 }, { -16,  64 },

  346.     {  -8,  68 }, { -10,  78 }, {  -6,  77 }, { -10,  86 },

  347.     { -12,  92 }, { -15,  55 }, { -10,  60 }, {  -6,  62 },

  348.     {  -4,  65 }, { -12,  73 }, {  -8,  76 }, {  -7,  80 },

  349.     {  -9,  88 }, { -17, 110 }, {  -3,  71 }, {  -6,  42 },

  350.     {  -5,  50 }, {  -3,  54 }, {  -2,  62 }, {   0,  58 },

  351.     {   1,  63 }, {  -2,  72 }, {  -1,  74 }, {  -9,  91 },

  352.     {  -5,  67 }, {  -5,  27 }, {  -3,  39 }, {  -2,  44 },

  353.     {   0,  46 }, { -16,  64 }, {  -8,  68 }, { -10,  78 },

  354.     {  -6,  77 }, { -10,  86 }, { -12,  92 }, { -15,  55 },

  355.     { -10,  60 }, {  -6,  62 }, {  -4,  65 }, { -12,  73 },

  356.     {  -8,  76 }, {  -7,  80 }, {  -9,  88 }, { -17, 110 },

  357.     {  -3,  70 }, {  -8,  93 }, { -10,  90 }, { -30, 127 },

  358.     {  -3,  70 }, {  -8,  93 }, { -10,  90 }, { -30, 127 },

  359.     {  -3,  70 }, {  -8,  93 }, { -10,  90 }, { -30, 127 }

  360. };

  361. 

  362. static const int8_t cabac_context_init_PB[3][1024][2] =

  363. {

  364.     /* i_cabac_init_idc == 0 */

  365.     {

  366.         /* 0 - 10 */

  367.         {  20, -15 }, {   2,  54 }, {   3,  74 }, {  20, -15 },

  368.         {   2,  54 }, {   3,  74 }, { -28, 127 }, { -23, 104 },

  369.         {  -6,  53 }, {  -1,  54 }, {   7,  51 },

  370. 

  371.         /* 11 - 23 */

  372.         {  23,  33 }, {  23,   2 }, {  21,   0 }, {   1,   9 },

  373.         {   0,  49 }, { -37, 118 }, {   5,  57 }, { -13,  78 },

  374.         { -11,  65 }, {   1,  62 }, {  12,  49 }, {  -4,  73 },

  375.         {  17,  50 },

  376. 

  377.         /* 24 - 39 */

  378.         {  18,  64 }, {   9,  43 }, {  29,   0 }, {  26,  67 },

  379.         {  16,  90 }, {   9, 104 }, { -46, 127 }, { -20, 104 },

  380.         {   1,  67 }, { -13,  78 }, { -11,  65 }, {   1,  62 },

  381.         {  -6,  86 }, { -17,  95 }, {  -6,  61 }, {   9,  45 },

  382. 

  383.         /* 40 - 53 */

  384.         {  -3,  69 }, {  -6,  81 }, { -11,  96 }, {   6,  55 },

  385.         {   7,  67 }, {  -5,  86 }, {   2,  88 }, {   0,  58 },

  386.         {  -3,  76 }, { -10,  94 }, {   5,  54 }, {   4,  69 },

  387.         {  -3,  81 }, {   0,  88 },

  388. 

  389.         /* 54 - 59 */

  390.         {  -7,  67 }, {  -5,  74 }, {  -4,  74 }, {  -5,  80 },

  391.         {  -7,  72 }, {   1,  58 },

  392. 

  393.         /* 60 - 69 */

  394.         {   0,  41 }, {   0,  63 }, {   0,  63 }, { 0, 63 },

  395.         {  -9,  83 }, {   4,  86 }, {   0,  97 }, { -7, 72 },

  396.         {  13,  41 }, {   3,  62 },

  397. 

  398.         /* 70 - 87 */

  399.         {   0,  45 }, {  -4,  78 }, {  -3,  96 }, { -27,  126 },

  400.         { -28,  98 }, { -25, 101 }, { -23,  67 }, { -28,  82 },

  401.         { -20,  94 }, { -16,  83 }, { -22, 110 }, { -21,  91 },

  402.         { -18, 102 }, { -13,  93 }, { -29, 127 }, {  -7,  92 },

  403.         {  -5,  89 }, {  -7,  96 }, { -13, 108 }, {  -3,  46 },

  404.         {  -1,  65 }, {  -1,  57 }, {  -9,  93 }, {  -3,  74 },

  405.         {  -9,  92 }, {  -8,  87 }, { -23, 126 }, {   5,  54 },

  406.         {   6,  60 }, {   6,  59 }, {   6,  69 }, {  -1,  48 },

  407.         {   0,  68 }, {  -4,  69 }, {  -8,  88 },

  408. 

  409.         /* 105 -> 165 */

  410.         {  -2,  85 }, {  -6,  78 }, {  -1,  75 }, {  -7,  77 },

  411.         {   2,  54 }, {   5,  50 }, {  -3,  68 }, {   1,  50 },

  412.         {   6,  42 }, {  -4,  81 }, {   1,  63 }, {  -4,  70 },

  413.         {   0,  67 }, {   2,  57 }, {  -2,  76 }, {  11,  35 },

  414.         {   4,  64 }, {   1,  61 }, {  11,  35 }, {  18,  25 },

  415.         {  12,  24 }, {  13,  29 }, {  13,  36 }, { -10,  93 },

  416.         {  -7,  73 }, {  -2,  73 }, {  13,  46 }, {   9,  49 },

  417.         {  -7, 100 }, {   9,  53 }, {   2,  53 }, {   5,  53 },

  418.         {  -2,  61 }, {   0,  56 }, {   0,  56 }, { -13,  63 },

  419.         {  -5,  60 }, {  -1,  62 }, {   4,  57 }, {  -6,  69 },

  420.         {   4,  57 }, {  14,  39 }, {   4,  51 }, {  13,  68 },

  421.         {   3,  64 }, {   1,  61 }, {   9,  63 }, {   7,  50 },

  422.         {  16,  39 }, {   5,  44 }, {   4,  52 }, {  11,  48 },

  423.         {  -5,  60 }, {  -1,  59 }, {   0,  59 }, {  22,  33 },

  424.         {   5,  44 }, {  14,  43 }, {  -1,  78 }, {   0,  60 },

  425.         {   9,  69 },

  426. 

  427.         /* 166 - 226 */

  428.         {  11,  28 }, {   2,  40 }, {   3,  44 }, {   0,  49 },

  429.         {   0,  46 }, {   2,  44 }, {   2,  51 }, {   0,  47 },

  430.         {   4,  39 }, {   2,  62 }, {   6,  46 }, {   0,  54 },

  431.         {   3,  54 }, {   2,  58 }, {   4,  63 }, {   6,  51 },

  432.         {   6,  57 }, {   7,  53 }, {   6,  52 }, {   6,  55 },

  433.         {  11,  45 }, {  14,  36 }, {   8,  53 }, {  -1,  82 },

  434.         {   7,  55 }, {  -3,  78 }, {  15,  46 }, {  22,  31 },

  435.         {  -1,  84 }, {  25,   7 }, {  30,  -7 }, {  28,   3 },

  436.         {  28,   4 }, {  32,   0 }, {  34,  -1 }, {  30,   6 },

  437.         {  30,   6 }, {  32,   9 }, {  31,  19 }, {  26,  27 },

  438.         {  26,  30 }, {  37,  20 }, {  28,  34 }, {  17,  70 },

  439.         {   1,  67 }, {   5,  59 }, {   9,  67 }, {  16,  30 },

  440.         {  18,  32 }, {  18,  35 }, {  22,  29 }, {  24,  31 },

  441.         {  23,  38 }, {  18,  43 }, {  20,  41 }, {  11,  63 },

  442.         {   9,  59 }, {   9,  64 }, {  -1,  94 }, {  -2,  89 },

  443.         {  -9, 108 },

  444. 

  445.         /* 227 - 275 */

  446.         {  -6,  76 }, {  -2,  44 }, {   0,  45 }, {   0,  52 },

  447.         {  -3,  64 }, {  -2,  59 }, {  -4,  70 }, {  -4,  75 },

  448.         {  -8,  82 }, { -17, 102 }, {  -9,  77 }, {   3,  24 },

  449.         {   0,  42 }, {   0,  48 }, {   0,  55 }, {  -6,  59 },

  450.         {  -7,  71 }, { -12,  83 }, { -11,  87 }, { -30, 119 },

  451.         {   1,  58 }, {  -3,  29 }, {  -1,  36 }, {   1,  38 },

  452.         {   2,  43 }, {  -6,  55 }, {   0,  58 }, {   0,  64 },

  453.         {  -3,  74 }, { -10,  90 }, {   0,  70 }, {  -4,  29 },

  454.         {   5,  31 }, {   7,  42 }, {   1,  59 }, {  -2,  58 },

  455.         {  -3,  72 }, {  -3,  81 }, { -11,  97 }, {   0,  58 },

  456.         {   8,   5 }, {  10,  14 }, {  14,  18 }, {  13,  27 },

  457.         {   2,  40 }, {   0,  58 }, {  -3,  70 }, {  -6,  79 },

  458.         {  -8,  85 },

  459. 

  460.         /* 276 a bit special (not used, bypass is used instead) */

  461.         { 0, 0 },

  462. 

  463.         /* 277 - 337 */

  464.         { -13, 106 }, { -16, 106 }, { -10,  87 }, { -21, 114 },

  465.         { -18, 110 }, { -14,  98 }, { -22, 110 }, { -21, 106 },

  466.         { -18, 103 }, { -21, 107 }, { -23, 108 }, { -26, 112 },

  467.         { -10,  96 }, { -12,  95 }, {  -5,  91 }, {  -9,  93 },

  468.         { -22,  94 }, {  -5,  86 }, {   9,  67 }, {  -4,  80 },

  469.         { -10,  85 }, {  -1,  70 }, {   7,  60 }, {   9,  58 },

  470.         {   5,  61 }, {  12,  50 }, {  15,  50 }, {  18,  49 },

  471.         {  17,  54 }, {  10,  41 }, {   7,  46 }, {  -1,  51 },

  472.         {   7,  49 }, {   8,  52 }, {   9,  41 }, {   6,  47 },

  473.         {   2,  55 }, {  13,  41 }, {  10,  44 }, {   6,  50 },

  474.         {   5,  53 }, {  13,  49 }, {   4,  63 }, {   6,  64 },

  475.         {  -2,  69 }, {  -2,  59 }, {   6,  70 }, {  10,  44 },

  476.         {   9,  31 }, {  12,  43 }, {   3,  53 }, {  14,  34 },

  477.         {  10,  38 }, {  -3,  52 }, {  13,  40 }, {  17,  32 },

  478.         {   7,  44 }, {   7,  38 }, {  13,  50 }, {  10,  57 },

  479.         {  26,  43 },

  480. 

  481.         /* 338 - 398 */

  482.         {  14,  11 }, {  11,  14 }, {   9,  11 }, {  18,  11 },

  483.         {  21,   9 }, {  23,  -2 }, {  32, -15 }, {  32, -15 },

  484.         {  34, -21 }, {  39, -23 }, {  42, -33 }, {  41, -31 },

  485.         {  46, -28 }, {  38, -12 }, {  21,  29 }, {  45, -24 },

  486.         {  53, -45 }, {  48, -26 }, {  65, -43 }, {  43, -19 },

  487.         {  39, -10 }, {  30,   9 }, {  18,  26 }, {  20,  27 },

  488.         {   0,  57 }, { -14,  82 }, {  -5,  75 }, { -19,  97 },

  489.         { -35, 125 }, {  27,   0 }, {  28,   0 }, {  31,  -4 },

  490.         {  27,   6 }, {  34,   8 }, {  30,  10 }, {  24,  22 },

  491.         {  33,  19 }, {  22,  32 }, {  26,  31 }, {  21,  41 },

  492.         {  26,  44 }, {  23,  47 }, {  16,  65 }, {  14,  71 },

  493.         {   8,  60 }, {   6,  63 }, {  17,  65 }, {  21,  24 },

  494.         {  23,  20 }, {  26,  23 }, {  27,  32 }, {  28,  23 },

  495.         {  28,  24 }, {  23,  40 }, {  24,  32 }, {  28,  29 },

  496.         {  23,  42 }, {  19,  57 }, {  22,  53 }, {  22,  61 },

  497.         {  11,  86 },

  498. 

  499.         /* 399 - 435 */

  500.         {  12,  40 }, {  11,  51 }, {  14,  59 },

  501.         {  -4,  79 }, {  -7,  71 }, {  -5,  69 }, {  -9,  70 },

  502.         {  -8,  66 }, { -10,  68 }, { -19,  73 }, { -12,  69 },

  503.         { -16,  70 }, { -15,  67 }, { -20,  62 }, { -19,  70 },

  504.         { -16,  66 }, { -22,  65 }, { -20,  63 }, {   9,  -2 },

  505.         {  26,  -9 }, {  33,  -9 }, {  39,  -7 }, {  41,  -2 },

  506.         {  45,   3 }, {  49,   9 }, {  45,  27 }, {  36,  59 },

  507.         {  -6,  66 }, {  -7,  35 }, {  -7,  42 }, {  -8,  45 },

  508.         {  -5,  48 }, { -12,  56 }, {  -6,  60 }, {  -5,  62 },

  509.         {  -8,  66 }, {  -8,  76 },

  510. 

  511.         /* 436 - 459 */

  512.         {  -5,  85 }, {  -6,  81 }, { -10,  77 }, {  -7,  81 },

  513.         { -17,  80 }, { -18,  73 }, {  -4,  74 }, { -10,  83 },

  514.         {  -9,  71 }, {  -9,  67 }, {  -1,  61 }, {  -8,  66 },

  515.         { -14,  66 }, {   0,  59 }, {   2,  59 }, {  21, -13 },

  516.         {  33, -14 }, {  39,  -7 }, {  46,  -2 }, {  51,   2 },

  517.         {  60,   6 }, {  61,  17 }, {  55,  34 }, {  42,  62 },

  518. 

  519.         /* 460 - 1024 */

  520.         {  -7,  92 }, {  -5,  89 }, {  -7,  96 }, { -13, 108 },

  521.         {  -3,  46 }, {  -1,  65 }, {  -1,  57 }, {  -9,  93 },

  522.         {  -3,  74 }, {  -9,  92 }, {  -8,  87 }, { -23, 126 },

  523.         {  -7,  92 }, {  -5,  89 }, {  -7,  96 }, { -13, 108 },

  524.         {  -3,  46 }, {  -1,  65 }, {  -1,  57 }, {  -9,  93 },

  525.         {  -3,  74 }, {  -9,  92 }, {  -8,  87 }, { -23, 126 },

  526.         {  -2,  85 }, {  -6,  78 }, {  -1,  75 }, {  -7,  77 },

  527.         {   2,  54 }, {   5,  50 }, {  -3,  68 }, {   1,  50 },

  528.         {   6,  42 }, {  -4,  81 }, {   1,  63 }, {  -4,  70 },

  529.         {   0,  67 }, {   2,  57 }, {  -2,  76 }, {  11,  35 },

  530.         {   4,  64 }, {   1,  61 }, {  11,  35 }, {  18,  25 },

  531.         {  12,  24 }, {  13,  29 }, {  13,  36 }, { -10,  93 },

  532.         {  -7,  73 }, {  -2,  73 }, {  13,  46 }, {   9,  49 },

  533.         {  -7, 100 }, {   9,  53 }, {   2,  53 }, {   5,  53 },

  534.         {  -2,  61 }, {   0,  56 }, {   0,  56 }, { -13,  63 },

  535.         {  -5,  60 }, {  -1,  62 }, {   4,  57 }, {  -6,  69 },

  536.         {   4,  57 }, {  14,  39 }, {   4,  51 }, {  13,  68 },

  537.         {  -2,  85 }, {  -6,  78 }, {  -1,  75 }, {  -7,  77 },

  538.         {   2,  54 }, {   5,  50 }, {  -3,  68 }, {   1,  50 },

  539.         {   6,  42 }, {  -4,  81 }, {   1,  63 }, {  -4,  70 },

  540.         {   0,  67 }, {   2,  57 }, {  -2,  76 }, {  11,  35 },

  541.         {   4,  64 }, {   1,  61 }, {  11,  35 }, {  18,  25 },

  542.         {  12,  24 }, {  13,  29 }, {  13,  36 }, { -10,  93 },

  543.         {  -7,  73 }, {  -2,  73 }, {  13,  46 }, {   9,  49 },

  544.         {  -7, 100 }, {   9,  53 }, {   2,  53 }, {   5,  53 },

  545.         {  -2,  61 }, {   0,  56 }, {   0,  56 }, { -13,  63 },

  546.         {  -5,  60 }, {  -1,  62 }, {   4,  57 }, {  -6,  69 },

  547.         {   4,  57 }, {  14,  39 }, {   4,  51 }, {  13,  68 },

  548.         {  11,  28 }, {   2,  40 }, {   3,  44 }, {   0,  49 },

  549.         {   0,  46 }, {   2,  44 }, {   2,  51 }, {   0,  47 },

  550.         {   4,  39 }, {   2,  62 }, {   6,  46 }, {   0,  54 },

  551.         {   3,  54 }, {   2,  58 }, {   4,  63 }, {   6,  51 },

  552.         {   6,  57 }, {   7,  53 }, {   6,  52 }, {   6,  55 },

  553.         {  11,  45 }, {  14,  36 }, {   8,  53 }, {  -1,  82 },

  554.         {   7,  55 }, {  -3,  78 }, {  15,  46 }, {  22,  31 },

  555.         {  -1,  84 }, {  25,   7 }, {  30,  -7 }, {  28,   3 },

  556.         {  28,   4 }, {  32,   0 }, {  34,  -1 }, {  30,   6 },

  557.         {  30,   6 }, {  32,   9 }, {  31,  19 }, {  26,  27 },

  558.         {  26,  30 }, {  37,  20 }, {  28,  34 }, {  17,  70 },

  559.         {  11,  28 }, {   2,  40 }, {   3,  44 }, {   0,  49 },

  560.         {   0,  46 }, {   2,  44 }, {   2,  51 }, {   0,  47 },

  561.         {   4,  39 }, {   2,  62 }, {   6,  46 }, {   0,  54 },

  562.         {   3,  54 }, {   2,  58 }, {   4,  63 }, {   6,  51 },

  563.         {   6,  57 }, {   7,  53 }, {   6,  52 }, {   6,  55 },

  564.         {  11,  45 }, {  14,  36 }, {   8,  53 }, {  -1,  82 },

  565.         {   7,  55 }, {  -3,  78 }, {  15,  46 }, {  22,  31 },

  566.         {  -1,  84 }, {  25,   7 }, {  30,  -7 }, {  28,   3 },

  567.         {  28,   4 }, {  32,   0 }, {  34,  -1 }, {  30,   6 },

  568.         {  30,   6 }, {  32,   9 }, {  31,  19 }, {  26,  27 },

  569.         {  26,  30 }, {  37,  20 }, {  28,  34 }, {  17,  70 },

  570.         {  -4,  79 }, {  -7,  71 }, {  -5,  69 }, {  -9,  70 },

  571.         {  -8,  66 }, { -10,  68 }, { -19,  73 }, { -12,  69 },

  572.         { -16,  70 }, { -15,  67 }, { -20,  62 }, { -19,  70 },

  573.         { -16,  66 }, { -22,  65 }, { -20,  63 }, {  -5,  85 },

  574.         {  -6,  81 }, { -10,  77 }, {  -7,  81 }, { -17,  80 },

  575.         { -18,  73 }, {  -4,  74 }, { -10,  83 }, {  -9,  71 },

  576.         {  -9,  67 }, {  -1,  61 }, {  -8,  66 }, { -14,  66 },

  577.         {   0,  59 }, {   2,  59 }, {   9,  -2 }, {  26,  -9 },

  578.         {  33,  -9 }, {  39,  -7 }, {  41,  -2 }, {  45,   3 },

  579.         {  49,   9 }, {  45,  27 }, {  36,  59 }, {  21, -13 },

  580.         {  33, -14 }, {  39,  -7 }, {  46,  -2 }, {  51,   2 },

  581.         {  60,   6 }, {  61,  17 }, {  55,  34 }, {  42,  62 },

  582.         {  -6,  66 }, {  -7,  35 }, {  -7,  42 }, {  -8,  45 },

  583.         {  -5,  48 }, { -12,  56 }, {  -6,  60 }, {  -5,  62 },

  584.         {  -8,  66 }, {  -8,  76 }, {  -4,  79 }, {  -7,  71 },

  585.         {  -5,  69 }, {  -9,  70 }, {  -8,  66 }, { -10,  68 },

  586.         { -19,  73 }, { -12,  69 }, { -16,  70 }, { -15,  67 },

  587.         { -20,  62 }, { -19,  70 }, { -16,  66 }, { -22,  65 },

  588.         { -20,  63 }, {  -5,  85 }, {  -6,  81 }, { -10,  77 },

  589.         {  -7,  81 }, { -17,  80 }, { -18,  73 }, {  -4,  74 },

  590.         { -10,  83 }, {  -9,  71 }, {  -9,  67 }, {  -1,  61 },

  591.         {  -8,  66 }, { -14,  66 }, {   0,  59 }, {   2,  59 },

  592.         {   9,  -2 }, {  26,  -9 }, {  33,  -9 }, {  39,  -7 },

  593.         {  41,  -2 }, {  45,   3 }, {  49,   9 }, {  45,  27 },

  594.         {  36,  59 }, {  21, -13 }, {  33, -14 }, {  39,  -7 },

  595.         {  46,  -2 }, {  51,   2 }, {  60,   6 }, {  61,  17 },

  596.         {  55,  34 }, {  42,  62 }, {  -6,  66 }, {  -7,  35 },

  597.         {  -7,  42 }, {  -8,  45 }, {  -5,  48 }, { -12,  56 },

  598.         {  -6,  60 }, {  -5,  62 }, {  -8,  66 }, {  -8,  76 },

  599.         { -13, 106 }, { -16, 106 }, { -10,  87 }, { -21, 114 },

  600.         { -18, 110 }, { -14,  98 }, { -22, 110 }, { -21, 106 },

  601.         { -18, 103 }, { -21, 107 }, { -23, 108 }, { -26, 112 },

  602.         { -10,  96 }, { -12,  95 }, {  -5,  91 }, {  -9,  93 },

  603.         { -22,  94 }, {  -5,  86 }, {   9,  67 }, {  -4,  80 },

  604.         { -10,  85 }, {  -1,  70 }, {   7,  60 }, {   9,  58 },

  605.         {   5,  61 }, {  12,  50 }, {  15,  50 }, {  18,  49 },

  606.         {  17,  54 }, {  10,  41 }, {   7,  46 }, {  -1,  51 },

  607.         {   7,  49 }, {   8,  52 }, {   9,  41 }, {   6,  47 },

  608.         {   2,  55 }, {  13,  41 }, {  10,  44 }, {   6,  50 },

  609.         {   5,  53 }, {  13,  49 }, {   4,  63 }, {   6,  64 },

  610.         { -13, 106 }, { -16, 106 }, { -10,  87 }, { -21, 114 },

  611.         { -18, 110 }, { -14,  98 }, { -22, 110 }, { -21, 106 },

  612.         { -18, 103 }, { -21, 107 }, { -23, 108 }, { -26, 112 },

  613.         { -10,  96 }, { -12,  95 }, {  -5,  91 }, {  -9,  93 },

  614.         { -22,  94 }, {  -5,  86 }, {   9,  67 }, {  -4,  80 },

  615.         { -10,  85 }, {  -1,  70 }, {   7,  60 }, {   9,  58 },

  616.         {   5,  61 }, {  12,  50 }, {  15,  50 }, {  18,  49 },

  617.         {  17,  54 }, {  10,  41 }, {   7,  46 }, {  -1,  51 },

  618.         {   7,  49 }, {   8,  52 }, {   9,  41 }, {   6,  47 },

  619.         {   2,  55 }, {  13,  41 }, {  10,  44 }, {   6,  50 },

  620.         {   5,  53 }, {  13,  49 }, {   4,  63 }, {   6,  64 },

  621.         {  14,  11 }, {  11,  14 }, {   9,  11 }, {  18,  11 },

  622.         {  21,   9 }, {  23,  -2 }, {  32, -15 }, {  32, -15 },

  623.         {  34, -21 }, {  39, -23 }, {  42, -33 }, {  41, -31 },

  624.         {  46, -28 }, {  38, -12 }, {  21,  29 }, {  45, -24 },

  625.         {  53, -45 }, {  48, -26 }, {  65, -43 }, {  43, -19 },

  626.         {  39, -10 }, {  30,   9 }, {  18,  26 }, {  20,  27 },

  627.         {   0,  57 }, { -14,  82 }, {  -5,  75 }, { -19,  97 },

  628.         { -35, 125 }, {  27,   0 }, {  28,   0 }, {  31,  -4 },

  629.         {  27,   6 }, {  34,   8 }, {  30,  10 }, {  24,  22 },

  630.         {  33,  19 }, {  22,  32 }, {  26,  31 }, {  21,  41 },

  631.         {  26,  44 }, {  23,  47 }, {  16,  65 }, {  14,  71 },

  632.         {  14,  11 }, {  11,  14 }, {   9,  11 }, {  18,  11 },

  633.         {  21,   9 }, {  23,  -2 }, {  32, -15 }, {  32, -15 },

  634.         {  34, -21 }, {  39, -23 }, {  42, -33 }, {  41, -31 },

  635.         {  46, -28 }, {  38, -12 }, {  21,  29 }, {  45, -24 },

  636.         {  53, -45 }, {  48, -26 }, {  65, -43 }, {  43, -19 },

  637.         {  39, -10 }, {  30,   9 }, {  18,  26 }, {  20,  27 },

  638.         {   0,  57 }, { -14,  82 }, {  -5,  75 }, { -19,  97 },

  639.         { -35, 125 }, {  27,   0 }, {  28,   0 }, {  31,  -4 },

  640.         {  27,   6 }, {  34,   8 }, {  30,  10 }, {  24,  22 },

  641.         {  33,  19 }, {  22,  32 }, {  26,  31 }, {  21,  41 },

  642.         {  26,  44 }, {  23,  47 }, {  16,  65 }, {  14,  71 },

  643.         {  -6,  76 }, {  -2,  44 }, {   0,  45 }, {   0,  52 },

  644.         {  -3,  64 }, {  -2,  59 }, {  -4,  70 }, {  -4,  75 },

  645.         {  -8,  82 }, { -17, 102 }, {  -9,  77 }, {   3,  24 },

  646.         {   0,  42 }, {   0,  48 }, {   0,  55 }, {  -6,  59 },

  647.         {  -7,  71 }, { -12,  83 }, { -11,  87 }, { -30, 119 },

  648.         {   1,  58 }, {  -3,  29 }, {  -1,  36 }, {   1,  38 },

  649.         {   2,  43 }, {  -6,  55 }, {   0,  58 }, {   0,  64 },

  650.         {  -3,  74 }, { -10,  90 }, {  -6,  76 }, {  -2,  44 },

  651.         {   0,  45 }, {   0,  52 }, {  -3,  64 }, {  -2,  59 },

  652.         {  -4,  70 }, {  -4,  75 }, {  -8,  82 }, { -17, 102 },

  653.         {  -9,  77 }, {   3,  24 }, {   0,  42 }, {   0,  48 },

  654.         {   0,  55 }, {  -6,  59 }, {  -7,  71 }, { -12,  83 },

  655.         { -11,  87 }, { -30, 119 }, {   1,  58 }, {  -3,  29 },

  656.         {  -1,  36 }, {   1,  38 }, {   2,  43 }, {  -6,  55 },

  657.         {   0,  58 }, {   0,  64 }, {  -3,  74 }, { -10,  90 },

  658.         {  -3,  74 }, {  -9,  92 }, {  -8,  87 }, { -23, 126 },

  659.         {  -3,  74 }, {  -9,  92 }, {  -8,  87 }, { -23, 126 },

  660.         {  -3,  74 }, {  -9,  92 }, {  -8,  87 }, { -23, 126 }

  661.     },

  662. 

  663.     /* i_cabac_init_idc == 1 */

  664.     {

  665.         /* 0 - 10 */

  666.         {  20, -15 }, {   2,  54 }, {   3,  74 }, {  20, -15 },

  667.         {   2,  54 }, {   3,  74 }, { -28, 127 }, { -23, 104 },

  668.         {  -6,  53 }, {  -1,  54 }, {   7,  51 },

  669. 

  670.         /* 11 - 23 */

  671.         {  22,  25 }, {  34,   0 }, {  16,   0 }, {  -2,   9 },

  672.         {   4,  41 }, { -29, 118 }, {   2,  65 }, {  -6,  71 },

  673.         { -13,  79 }, {   5,  52 }, {   9,  50 }, {  -3,  70 },

  674.         {  10,  54 },

  675. 

  676.         /* 24 - 39 */

  677.         {  26,  34 }, {  19,  22 }, {  40,   0 }, {  57,   2 },

  678.         {  41,  36 }, {  26,  69 }, { -45, 127 }, { -15, 101 },

  679.         {  -4,  76 }, {  -6,  71 }, { -13,  79 }, {   5,  52 },

  680.         {   6,  69 }, { -13,  90 }, {   0,  52 }, {   8,  43 },

  681. 

  682.         /* 40 - 53 */

  683.         {  -2,  69 },{  -5,  82 },{ -10,  96 },{   2,  59 },

  684.         {   2,  75 },{  -3,  87 },{  -3,  100 },{   1,  56 },

  685.         {  -3,  74 },{  -6,  85 },{   0,  59 },{  -3,  81 },

  686.         {  -7,  86 },{  -5,  95 },

  687. 

  688.         /* 54 - 59 */

  689.         {  -1,  66 },{  -1,  77 },{   1,  70 },{  -2,  86 },

  690.         {  -5,  72 },{   0,  61 },

  691. 

  692.         /* 60 - 69 */

  693.         { 0, 41 },   { 0, 63 },   { 0, 63 },     { 0, 63 },

  694.         { -9, 83 },  { 4, 86 },   { 0, 97 },     { -7, 72 },

  695.         { 13, 41 },  { 3, 62 },

  696. 

  697.         /* 70 - 104 */

  698.         {  13,  15 }, {   7,  51 }, {   2,  80 }, { -39, 127 },

  699.         { -18,  91 }, { -17,  96 }, { -26,  81 }, { -35,  98 },

  700.         { -24, 102 }, { -23,  97 }, { -27, 119 }, { -24,  99 },

  701.         { -21, 110 }, { -18, 102 }, { -36, 127 }, {   0,  80 },

  702.         {  -5,  89 }, {  -7,  94 }, {  -4,  92 }, {   0,  39 },

  703.         {   0,  65 }, { -15,  84 }, { -35, 127 }, {  -2,  73 },

  704.         { -12, 104 }, {  -9,  91 }, { -31, 127 }, {   3,  55 },

  705.         {   7,  56 }, {   7,  55 }, {   8,  61 }, {  -3,  53 },

  706.         {   0,  68 }, {  -7,  74 }, {  -9,  88 },

  707. 

  708.         /* 105 -> 165 */

  709.         { -13, 103 }, { -13,  91 }, {  -9,  89 }, { -14,  92 },

  710.         {  -8,  76 }, { -12,  87 }, { -23, 110 }, { -24, 105 },

  711.         { -10,  78 }, { -20, 112 }, { -17,  99 }, { -78, 127 },

  712.         { -70, 127 }, { -50, 127 }, { -46, 127 }, {  -4,  66 },

  713.         {  -5,  78 }, {  -4,  71 }, {  -8,  72 }, {   2,  59 },

  714.         {  -1,  55 }, {  -7,  70 }, {  -6,  75 }, {  -8,  89 },

  715.         { -34, 119 }, {  -3,  75 }, {  32,  20 }, {  30,  22 },

  716.         { -44, 127 }, {   0,  54 }, {  -5,  61 }, {   0,  58 },

  717.         {  -1,  60 }, {  -3,  61 }, {  -8,  67 }, { -25,  84 },

  718.         { -14,  74 }, {  -5,  65 }, {   5,  52 }, {   2,  57 },

  719.         {   0,  61 }, {  -9,  69 }, { -11,  70 }, {  18,  55 },

  720.         {  -4,  71 }, {   0,  58 }, {   7,  61 }, {   9,  41 },

  721.         {  18,  25 }, {   9,  32 }, {   5,  43 }, {   9,  47 },

  722.         {   0,  44 }, {   0,  51 }, {   2,  46 }, {  19,  38 },

  723.         {  -4,  66 }, {  15,  38 }, {  12,  42 }, {   9,  34 },

  724.         {   0,  89 },

  725. 

  726.         /* 166 - 226 */

  727.         {   4,  45 }, {  10,  28 }, {  10,  31 }, {  33, -11 },

  728.         {  52, -43 }, {  18,  15 }, {  28,   0 }, {  35, -22 },

  729.         {  38, -25 }, {  34,   0 }, {  39, -18 }, {  32, -12 },

  730.         { 102, -94 }, {   0,   0 }, {  56, -15 }, {  33,  -4 },

  731.         {  29,  10 }, {  37,  -5 }, {  51, -29 }, {  39,  -9 },

  732.         {  52, -34 }, {  69, -58 }, {  67, -63 }, {  44,  -5 },

  733.         {  32,   7 }, {  55, -29 }, {  32,   1 }, {   0,   0 },

  734.         {  27,  36 }, {  33, -25 }, {  34, -30 }, {  36, -28 },

  735.         {  38, -28 }, {  38, -27 }, {  34, -18 }, {  35, -16 },

  736.         {  34, -14 }, {  32,  -8 }, {  37,  -6 }, {  35,   0 },

  737.         {  30,  10 }, {  28,  18 }, {  26,  25 }, {  29,  41 },

  738.         {   0,  75 }, {   2,  72 }, {   8,  77 }, {  14,  35 },

  739.         {  18,  31 }, {  17,  35 }, {  21,  30 }, {  17,  45 },

  740.         {  20,  42 }, {  18,  45 }, {  27,  26 }, {  16,  54 },

  741.         {   7,  66 }, {  16,  56 }, {  11,  73 }, {  10,  67 },

  742.         { -10, 116 },

  743. 

  744.         /* 227 - 275 */

  745.         { -23, 112 }, { -15,  71 }, {  -7,  61 }, {   0,  53 },

  746.         {  -5,  66 }, { -11,  77 }, {  -9,  80 }, {  -9,  84 },

  747.         { -10,  87 }, { -34, 127 }, { -21, 101 }, {  -3,  39 },

  748.         {  -5,  53 }, {  -7,  61 }, { -11,  75 }, { -15,  77 },

  749.         { -17,  91 }, { -25, 107 }, { -25, 111 }, { -28, 122 },

  750.         { -11,  76 }, { -10,  44 }, { -10,  52 }, { -10,  57 },

  751.         {  -9,  58 }, { -16,  72 }, {  -7,  69 }, {  -4,  69 },

  752.         {  -5,  74 }, {  -9,  86 }, {   2,  66 }, {  -9,  34 },

  753.         {   1,  32 }, {  11,  31 }, {   5,  52 }, {  -2,  55 },

  754.         {  -2,  67 }, {   0,  73 }, {  -8,  89 }, {   3,  52 },

  755.         {   7,   4 }, {  10,   8 }, {  17,   8 }, {  16,  19 },

  756.         {   3,  37 }, {  -1,  61 }, {  -5,  73 }, {  -1,  70 },

  757.         {  -4,  78 },

  758. 

  759.         /* 276 a bit special (not used, bypass is used instead) */

  760.         { 0, 0 },

  761. 

  762.         /* 277 - 337 */

  763.         { -21, 126 }, { -23, 124 }, { -20, 110 }, { -26, 126 },

  764.         { -25, 124 }, { -17, 105 }, { -27, 121 }, { -27, 117 },

  765.         { -17, 102 }, { -26, 117 }, { -27, 116 }, { -33, 122 },

  766.         { -10,  95 }, { -14, 100 }, {  -8,  95 }, { -17, 111 },

  767.         { -28, 114 }, {  -6,  89 }, {  -2,  80 }, {  -4,  82 },

  768.         {  -9,  85 }, {  -8,  81 }, {  -1,  72 }, {   5,  64 },

  769.         {   1,  67 }, {   9,  56 }, {   0,  69 }, {   1,  69 },

  770.         {   7,  69 }, {  -7,  69 }, {  -6,  67 }, { -16,  77 },

  771.         {  -2,  64 }, {   2,  61 }, {  -6,  67 }, {  -3,  64 },

  772.         {   2,  57 }, {  -3,  65 }, {  -3,  66 }, {   0,  62 },

  773.         {   9,  51 }, {  -1,  66 }, {  -2,  71 }, {  -2,  75 },

  774.         {  -1,  70 }, {  -9,  72 }, {  14,  60 }, {  16,  37 },

  775.         {   0,  47 }, {  18,  35 }, {  11,  37 }, {  12,  41 },

  776.         {  10,  41 }, {   2,  48 }, {  12,  41 }, {  13,  41 },

  777.         {   0,  59 }, {   3,  50 }, {  19,  40 }, {   3,  66 },

  778.         {  18,  50 },

  779. 

  780.         /* 338 - 398 */

  781.         {  19,  -6 }, {  18,  -6 }, {  14,   0 }, {  26, -12 },

  782.         {  31, -16 }, {  33, -25 }, {  33, -22 }, {  37, -28 },

  783.         {  39, -30 }, {  42, -30 }, {  47, -42 }, {  45, -36 },

  784.         {  49, -34 }, {  41, -17 }, {  32,   9 }, {  69, -71 },

  785.         {  63, -63 }, {  66, -64 }, {  77, -74 }, {  54, -39 },

  786.         {  52, -35 }, {  41, -10 }, {  36,   0 }, {  40,  -1 },

  787.         {  30,  14 }, {  28,  26 }, {  23,  37 }, {  12,  55 },

  788.         {  11,  65 }, {  37, -33 }, {  39, -36 }, {  40, -37 },

  789.         {  38, -30 }, {  46, -33 }, {  42, -30 }, {  40, -24 },

  790.         {  49, -29 }, {  38, -12 }, {  40, -10 }, {  38,  -3 },

  791.         {  46,  -5 }, {  31,  20 }, {  29,  30 }, {  25,  44 },

  792.         {  12,  48 }, {  11,  49 }, {  26,  45 }, {  22,  22 },

  793.         {  23,  22 }, {  27,  21 }, {  33,  20 }, {  26,  28 },

  794.         {  30,  24 }, {  27,  34 }, {  18,  42 }, {  25,  39 },

  795.         {  18,  50 }, {  12,  70 }, {  21,  54 }, {  14,  71 },

  796.         {  11,  83 },

  797. 

  798.         /* 399 - 435 */

  799.         {  25,  32 }, {  21,  49 }, {  21,  54 },

  800.         {  -5,  85 }, {  -6,  81 }, { -10,  77 }, {  -7,  81 },

  801.         { -17,  80 }, { -18,  73 }, {  -4,  74 }, { -10,  83 },

  802.         {  -9,  71 }, {  -9,  67 }, {  -1,  61 }, {  -8,  66 },

  803.         { -14,  66 }, {   0,  59 }, {   2,  59 }, {  17, -10 },

  804.         {  32, -13 }, {  42,  -9 }, {  49,  -5 }, {  53,   0 },

  805.         {  64,   3 }, {  68,  10 }, {  66,  27 }, {  47,  57 },

  806.         {  -5,  71 }, {   0,  24 }, {  -1,  36 }, {  -2,  42 },

  807.         {  -2,  52 }, {  -9,  57 }, {  -6,  63 }, {  -4,  65 },

  808.         {  -4,  67 }, {  -7,  82 },

  809. 

  810.         /* 436 - 459 */

  811.         {  -3,  81 }, {  -3,  76 }, {  -7,  72 }, {  -6,  78 },

  812.         { -12,  72 }, { -14,  68 }, {  -3,  70 }, {  -6,  76 },

  813.         {  -5,  66 }, {  -5,  62 }, {   0,  57 }, {  -4,  61 },

  814.         {  -9,  60 }, {   1,  54 }, {   2,  58 }, {  17, -10 },

  815.         {  32, -13 }, {  42,  -9 }, {  49,  -5 }, {  53,   0 },

  816.         {  64,   3 }, {  68,  10 }, {  66,  27 }, {  47,  57 },

  817. 

  818.         /* 460 - 1024 */

  819.         {   0,  80 }, {  -5,  89 }, {  -7,  94 }, {  -4,  92 },

  820.         {   0,  39 }, {   0,  65 }, { -15,  84 }, { -35, 127 },

  821.         {  -2,  73 }, { -12, 104 }, {  -9,  91 }, { -31, 127 },

  822.         {   0,  80 }, {  -5,  89 }, {  -7,  94 }, {  -4,  92 },

  823.         {   0,  39 }, {   0,  65 }, { -15,  84 }, { -35, 127 },

  824.         {  -2,  73 }, { -12, 104 }, {  -9,  91 }, { -31, 127 },

  825.         { -13, 103 }, { -13,  91 }, {  -9,  89 }, { -14,  92 },

  826.         {  -8,  76 }, { -12,  87 }, { -23, 110 }, { -24, 105 },

  827.         { -10,  78 }, { -20, 112 }, { -17,  99 }, { -78, 127 },

  828.         { -70, 127 }, { -50, 127 }, { -46, 127 }, {  -4,  66 },

  829.         {  -5,  78 }, {  -4,  71 }, {  -8,  72 }, {   2,  59 },

  830.         {  -1,  55 }, {  -7,  70 }, {  -6,  75 }, {  -8,  89 },

  831.         { -34, 119 }, {  -3,  75 }, {  32,  20 }, {  30,  22 },

  832.         { -44, 127 }, {   0,  54 }, {  -5,  61 }, {   0,  58 },

  833.         {  -1,  60 }, {  -3,  61 }, {  -8,  67 }, { -25,  84 },

  834.         { -14,  74 }, {  -5,  65 }, {   5,  52 }, {   2,  57 },

  835.         {   0,  61 }, {  -9,  69 }, { -11,  70 }, {  18,  55 },

  836.         { -13, 103 }, { -13,  91 }, {  -9,  89 }, { -14,  92 },

  837.         {  -8,  76 }, { -12,  87 }, { -23, 110 }, { -24, 105 },

  838.         { -10,  78 }, { -20, 112 }, { -17,  99 }, { -78, 127 },

  839.         { -70, 127 }, { -50, 127 }, { -46, 127 }, {  -4,  66 },

  840.         {  -5,  78 }, {  -4,  71 }, {  -8,  72 }, {   2,  59 },

  841.         {  -1,  55 }, {  -7,  70 }, {  -6,  75 }, {  -8,  89 },

  842.         { -34, 119 }, {  -3,  75 }, {  32,  20 }, {  30,  22 },

  843.         { -44, 127 }, {   0,  54 }, {  -5,  61 }, {   0,  58 },

  844.         {  -1,  60 }, {  -3,  61 }, {  -8,  67 }, { -25,  84 },

  845.         { -14,  74 }, {  -5,  65 }, {   5,  52 }, {   2,  57 },

  846.         {   0,  61 }, {  -9,  69 }, { -11,  70 }, {  18,  55 },

  847.         {   4,  45 }, {  10,  28 }, {  10,  31 }, {  33, -11 },

  848.         {  52, -43 }, {  18,  15 }, {  28,   0 }, {  35, -22 },

  849.         {  38, -25 }, {  34,   0 }, {  39, -18 }, {  32, -12 },

  850.         { 102, -94 }, {   0,   0 }, {  56, -15 }, {  33,  -4 },

  851.         {  29,  10 }, {  37,  -5 }, {  51, -29 }, {  39,  -9 },

  852.         {  52, -34 }, {  69, -58 }, {  67, -63 }, {  44,  -5 },

  853.         {  32,   7 }, {  55, -29 }, {  32,   1 }, {   0,   0 },

  854.         {  27,  36 }, {  33, -25 }, {  34, -30 }, {  36, -28 },

  855.         {  38, -28 }, {  38, -27 }, {  34, -18 }, {  35, -16 },

  856.         {  34, -14 }, {  32,  -8 }, {  37,  -6 }, {  35,   0 },

  857.         {  30,  10 }, {  28,  18 }, {  26,  25 }, {  29,  41 },

  858.         {   4,  45 }, {  10,  28 }, {  10,  31 }, {  33, -11 },

  859.         {  52, -43 }, {  18,  15 }, {  28,   0 }, {  35, -22 },

  860.         {  38, -25 }, {  34,   0 }, {  39, -18 }, {  32, -12 },

  861.         { 102, -94 }, {   0,   0 }, {  56, -15 }, {  33,  -4 },

  862.         {  29,  10 }, {  37,  -5 }, {  51, -29 }, {  39,  -9 },

  863.         {  52, -34 }, {  69, -58 }, {  67, -63 }, {  44,  -5 },

  864.         {  32,   7 }, {  55, -29 }, {  32,   1 }, {   0,   0 },

  865.         {  27,  36 }, {  33, -25 }, {  34, -30 }, {  36, -28 },

  866.         {  38, -28 }, {  38, -27 }, {  34, -18 }, {  35, -16 },

  867.         {  34, -14 }, {  32,  -8 }, {  37,  -6 }, {  35,   0 },

  868.         {  30,  10 }, {  28,  18 }, {  26,  25 }, {  29,  41 },

  869.         {  -5,  85 }, {  -6,  81 }, { -10,  77 }, {  -7,  81 },

  870.         { -17,  80 }, { -18,  73 }, {  -4,  74 }, { -10,  83 },

  871.         {  -9,  71 }, {  -9,  67 }, {  -1,  61 }, {  -8,  66 },

  872.         { -14,  66 }, {   0,  59 }, {   2,  59 }, {  -3,  81 },

  873.         {  -3,  76 }, {  -7,  72 }, {  -6,  78 }, { -12,  72 },

  874.         { -14,  68 }, {  -3,  70 }, {  -6,  76 }, {  -5,  66 },

  875.         {  -5,  62 }, {   0,  57 }, {  -4,  61 }, {  -9,  60 },

  876.         {   1,  54 }, {   2,  58 }, {  17, -10 }, {  32, -13 },

  877.         {  42,  -9 }, {  49,  -5 }, {  53,   0 }, {  64,   3 },

  878.         {  68,  10 }, {  66,  27 }, {  47,  57 }, {  17, -10 },

  879.         {  32, -13 }, {  42,  -9 }, {  49,  -5 }, {  53,   0 },

  880.         {  64,   3 }, {  68,  10 }, {  66,  27 }, {  47,  57 },

  881.         {  -5,  71 }, {   0,  24 }, {  -1,  36 }, {  -2,  42 },

  882.         {  -2,  52 }, {  -9,  57 }, {  -6,  63 }, {  -4,  65 },

  883.         {  -4,  67 }, {  -7,  82 }, {  -5,  85 }, {  -6,  81 },

  884.         { -10,  77 }, {  -7,  81 }, { -17,  80 }, { -18,  73 },

  885.         {  -4,  74 }, { -10,  83 }, {  -9,  71 }, {  -9,  67 },

  886.         {  -1,  61 }, {  -8,  66 }, { -14,  66 }, {   0,  59 },

  887.         {   2,  59 }, {  -3,  81 }, {  -3,  76 }, {  -7,  72 },

  888.         {  -6,  78 }, { -12,  72 }, { -14,  68 }, {  -3,  70 },

  889.         {  -6,  76 }, {  -5,  66 }, {  -5,  62 }, {   0,  57 },

  890.         {  -4,  61 }, {  -9,  60 }, {   1,  54 }, {   2,  58 },

  891.         {  17, -10 }, {  32, -13 }, {  42,  -9 }, {  49,  -5 },

  892.         {  53,   0 }, {  64,   3 }, {  68,  10 }, {  66,  27 },

  893.         {  47,  57 }, {  17, -10 }, {  32, -13 }, {  42,  -9 },

  894.         {  49,  -5 }, {  53,   0 }, {  64,   3 }, {  68,  10 },

  895.         {  66,  27 }, {  47,  57 }, {  -5,  71 }, {   0,  24 },

  896.         {  -1,  36 }, {  -2,  42 }, {  -2,  52 }, {  -9,  57 },

  897.         {  -6,  63 }, {  -4,  65 }, {  -4,  67 }, {  -7,  82 },

  898.         { -21, 126 }, { -23, 124 }, { -20, 110 }, { -26, 126 },

  899.         { -25, 124 }, { -17, 105 }, { -27, 121 }, { -27, 117 },

  900.         { -17, 102 }, { -26, 117 }, { -27, 116 }, { -33, 122 },

  901.         { -10,  95 }, { -14, 100 }, {  -8,  95 }, { -17, 111 },

  902.         { -28, 114 }, {  -6,  89 }, {  -2,  80 }, {  -4,  82 },

  903.         {  -9,  85 }, {  -8,  81 }, {  -1,  72 }, {   5,  64 },

  904.         {   1,  67 }, {   9,  56 }, {   0,  69 }, {   1,  69 },

  905.         {   7,  69 }, {  -7,  69 }, {  -6,  67 }, { -16,  77 },

  906.         {  -2,  64 }, {   2,  61 }, {  -6,  67 }, {  -3,  64 },

  907.         {   2,  57 }, {  -3,  65 }, {  -3,  66 }, {   0,  62 },

  908.         {   9,  51 }, {  -1,  66 }, {  -2,  71 }, {  -2,  75 },

  909.         { -21, 126 }, { -23, 124 }, { -20, 110 }, { -26, 126 },

  910.         { -25, 124 }, { -17, 105 }, { -27, 121 }, { -27, 117 },

  911.         { -17, 102 }, { -26, 117 }, { -27, 116 }, { -33, 122 },

  912.         { -10,  95 }, { -14, 100 }, {  -8,  95 }, { -17, 111 },

  913.         { -28, 114 }, {  -6,  89 }, {  -2,  80 }, {  -4,  82 },

  914.         {  -9,  85 }, {  -8,  81 }, {  -1,  72 }, {   5,  64 },

  915.         {   1,  67 }, {   9,  56 }, {   0,  69 }, {   1,  69 },

  916.         {   7,  69 }, {  -7,  69 }, {  -6,  67 }, { -16,  77 },

  917.         {  -2,  64 }, {   2,  61 }, {  -6,  67 }, {  -3,  64 },

  918.         {   2,  57 }, {  -3,  65 }, {  -3,  66 }, {   0,  62 },

  919.         {   9,  51 }, {  -1,  66 }, {  -2,  71 }, {  -2,  75 },

  920.         {  19,  -6 }, {  18,  -6 }, {  14,   0 }, {  26, -12 },

  921.         {  31, -16 }, {  33, -25 }, {  33, -22 }, {  37, -28 },

  922.         {  39, -30 }, {  42, -30 }, {  47, -42 }, {  45, -36 },

  923.         {  49, -34 }, {  41, -17 }, {  32,   9 }, {  69, -71 },

  924.         {  63, -63 }, {  66, -64 }, {  77, -74 }, {  54, -39 },

  925.         {  52, -35 }, {  41, -10 }, {  36,   0 }, {  40,  -1 },

  926.         {  30,  14 }, {  28,  26 }, {  23,  37 }, {  12,  55 },

  927.         {  11,  65 }, {  37, -33 }, {  39, -36 }, {  40, -37 },

  928.         {  38, -30 }, {  46, -33 }, {  42, -30 }, {  40, -24 },

  929.         {  49, -29 }, {  38, -12 }, {  40, -10 }, {  38,  -3 },

  930.         {  46,  -5 }, {  31,  20 }, {  29,  30 }, {  25,  44 },

  931.         {  19,  -6 }, {  18,  -6 }, {  14,   0 }, {  26, -12 },

  932.         {  31, -16 }, {  33, -25 }, {  33, -22 }, {  37, -28 },

  933.         {  39, -30 }, {  42, -30 }, {  47, -42 }, {  45, -36 },

  934.         {  49, -34 }, {  41, -17 }, {  32,   9 }, {  69, -71 },

  935.         {  63, -63 }, {  66, -64 }, {  77, -74 }, {  54, -39 },

  936.         {  52, -35 }, {  41, -10 }, {  36,   0 }, {  40,  -1 },

  937.         {  30,  14 }, {  28,  26 }, {  23,  37 }, {  12,  55 },

  938.         {  11,  65 }, {  37, -33 }, {  39, -36 }, {  40, -37 },

  939.         {  38, -30 }, {  46, -33 }, {  42, -30 }, {  40, -24 },

  940.         {  49, -29 }, {  38, -12 }, {  40, -10 }, {  38,  -3 },

  941.         {  46,  -5 }, {  31,  20 }, {  29,  30 }, {  25,  44 },

  942.         { -23, 112 }, { -15,  71 }, {  -7,  61 }, {   0,  53 },

  943.         {  -5,  66 }, { -11,  77 }, {  -9,  80 }, {  -9,  84 },

  944.         { -10,  87 }, { -34, 127 }, { -21, 101 }, {  -3,  39 },

  945.         {  -5,  53 }, {  -7,  61 }, { -11,  75 }, { -15,  77 },

  946.         { -17,  91 }, { -25, 107 }, { -25, 111 }, { -28, 122 },

  947.         { -11,  76 }, { -10,  44 }, { -10,  52 }, { -10,  57 },

  948.         {  -9,  58 }, { -16,  72 }, {  -7,  69 }, {  -4,  69 },

  949.         {  -5,  74 }, {  -9,  86 }, { -23, 112 }, { -15,  71 },

  950.         {  -7,  61 }, {   0,  53 }, {  -5,  66 }, { -11,  77 },

  951.         {  -9,  80 }, {  -9,  84 }, { -10,  87 }, { -34, 127 },

  952.         { -21, 101 }, {  -3,  39 }, {  -5,  53 }, {  -7,  61 },

  953.         { -11,  75 }, { -15,  77 }, { -17,  91 }, { -25, 107 },

  954.         { -25, 111 }, { -28, 122 }, { -11,  76 }, { -10,  44 },

  955.         { -10,  52 }, { -10,  57 }, {  -9,  58 }, { -16,  72 },

  956.         {  -7,  69 }, {  -4,  69 }, {  -5,  74 }, {  -9,  86 },

  957.         {  -2,  73 }, { -12, 104 }, {  -9,  91 }, { -31, 127 },

  958.         {  -2,  73 }, { -12, 104 }, {  -9,  91 }, { -31, 127 },

  959.         {  -2,  73 }, { -12, 104 }, {  -9,  91 }, { -31, 127 }

  960.     },

  961. 

  962.     /* i_cabac_init_idc == 2 */

  963.     {

  964.         /* 0 - 10 */

  965.         {  20, -15 }, {   2,  54 }, {   3,  74 }, {  20, -15 },

  966.         {   2,  54 }, {   3,  74 }, { -28, 127 }, { -23, 104 },

  967.         {  -6,  53 }, {  -1,  54 }, {   7,  51 },

  968. 

  969.         /* 11 - 23 */

  970.         {  29,  16 }, {  25,   0 }, {  14,   0 }, { -10,  51 },

  971.         {  -3,  62 }, { -27,  99 }, {  26,  16 }, {  -4,  85 },

  972.         { -24, 102 }, {   5,  57 }, {   6,  57 }, { -17,  73 },

  973.         {  14,  57 },

  974. 

  975.         /* 24 - 39 */

  976.         {  20,  40 }, {  20,  10 }, {  29,   0 }, {  54,   0 },

  977.         {  37,  42 }, {  12,  97 }, { -32, 127 }, { -22, 117 },

  978.         {  -2,  74 }, {  -4,  85 }, { -24, 102 }, {   5,  57 },

  979.         {  -6,  93 }, { -14,  88 }, {  -6,  44 }, {   4,  55 },

  980. 

  981.         /* 40 - 53 */

  982.         { -11,  89 },{ -15,  103 },{ -21,  116 },{  19,  57 },

  983.         {  20,  58 },{   4,  84 },{   6,  96 },{   1,  63 },

  984.         {  -5,  85 },{ -13,  106 },{   5,  63 },{   6,  75 },

  985.         {  -3,  90 },{  -1,  101 },

  986. 

  987.         /* 54 - 59 */

  988.         {   3,  55 },{  -4,  79 },{  -2,  75 },{ -12,  97 },

  989.         {  -7,  50 },{   1,  60 },

  990. 

  991.         /* 60 - 69 */

  992.         { 0, 41 },   { 0, 63 },   { 0, 63 },     { 0, 63 },

  993.         { -9, 83 },  { 4, 86 },   { 0, 97 },     { -7, 72 },

  994.         { 13, 41 },  { 3, 62 },

  995. 

  996.         /* 70 - 104 */

  997.         {   7,  34 }, {  -9,  88 }, { -20, 127 }, { -36, 127 },

  998.         { -17,  91 }, { -14,  95 }, { -25,  84 }, { -25,  86 },

  999.         { -12,  89 }, { -17,  91 }, { -31, 127 }, { -14,  76 },

  1000.         { -18, 103 }, { -13,  90 }, { -37, 127 }, {  11,  80 },

  1001.         {   5,  76 }, {   2,  84 }, {   5,  78 }, {  -6,  55 },

  1002.         {   4,  61 }, { -14,  83 }, { -37, 127 }, {  -5,  79 },

  1003.         { -11, 104 }, { -11,  91 }, { -30, 127 }, {   0,  65 },

  1004.         {  -2,  79 }, {   0,  72 }, {  -4,  92 }, {  -6,  56 },

  1005.         {   3,  68 }, {  -8,  71 }, { -13,  98 },

  1006. 

  1007.         /* 105 -> 165 */

  1008.         {  -4,  86 }, { -12,  88 }, {  -5,  82 }, {  -3,  72 },

  1009.         {  -4,  67 }, {  -8,  72 }, { -16,  89 }, {  -9,  69 },

  1010.         {  -1,  59 }, {   5,  66 }, {   4,  57 }, {  -4,  71 },

  1011.         {  -2,  71 }, {   2,  58 }, {  -1,  74 }, {  -4,  44 },

  1012.         {  -1,  69 }, {   0,  62 }, {  -7,  51 }, {  -4,  47 },

  1013.         {  -6,  42 }, {  -3,  41 }, {  -6,  53 }, {   8,  76 },

  1014.         {  -9,  78 }, { -11,  83 }, {   9,  52 }, {   0,  67 },

  1015.         {  -5,  90 }, {   1,  67 }, { -15,  72 }, {  -5,  75 },

  1016.         {  -8,  80 }, { -21,  83 }, { -21,  64 }, { -13,  31 },

  1017.         { -25,  64 }, { -29,  94 }, {   9,  75 }, {  17,  63 },

  1018.         {  -8,  74 }, {  -5,  35 }, {  -2,  27 }, {  13,  91 },

  1019.         {   3,  65 }, {  -7,  69 }, {   8,  77 }, { -10,  66 },

  1020.         {   3,  62 }, {  -3,  68 }, { -20,  81 }, {   0,  30 },

  1021.         {   1,   7 }, {  -3,  23 }, { -21,  74 }, {  16,  66 },

  1022.         { -23, 124 }, {  17,  37 }, {  44, -18 }, {  50, -34 },

  1023.         { -22, 127 },

  1024. 

  1025.         /* 166 - 226 */

  1026.         {   4,  39 }, {   0,  42 }, {   7,  34 }, {  11,  29 },

  1027.         {   8,  31 }, {   6,  37 }, {   7,  42 }, {   3,  40 },

  1028.         {   8,  33 }, {  13,  43 }, {  13,  36 }, {   4,  47 },

  1029.         {   3,  55 }, {   2,  58 }, {   6,  60 }, {   8,  44 },

  1030.         {  11,  44 }, {  14,  42 }, {   7,  48 }, {   4,  56 },

  1031.         {   4,  52 }, {  13,  37 }, {   9,  49 }, {  19,  58 },

  1032.         {  10,  48 }, {  12,  45 }, {   0,  69 }, {  20,  33 },

  1033.         {   8,  63 }, {  35, -18 }, {  33, -25 }, {  28,  -3 },

  1034.         {  24,  10 }, {  27,   0 }, {  34, -14 }, {  52, -44 },

  1035.         {  39, -24 }, {  19,  17 }, {  31,  25 }, {  36,  29 },

  1036.         {  24,  33 }, {  34,  15 }, {  30,  20 }, {  22,  73 },

  1037.         {  20,  34 }, {  19,  31 }, {  27,  44 }, {  19,  16 },

  1038.         {  15,  36 }, {  15,  36 }, {  21,  28 }, {  25,  21 },

  1039.         {  30,  20 }, {  31,  12 }, {  27,  16 }, {  24,  42 },

  1040.         {   0,  93 }, {  14,  56 }, {  15,  57 }, {  26,  38 },

  1041.         { -24, 127 },

  1042. 

  1043.         /* 227 - 275 */

  1044.         { -24, 115 }, { -22,  82 }, {  -9,  62 }, {   0,  53 },

  1045.         {   0,  59 }, { -14,  85 }, { -13,  89 }, { -13,  94 },

  1046.         { -11,  92 }, { -29, 127 }, { -21, 100 }, { -14,  57 },

  1047.         { -12,  67 }, { -11,  71 }, { -10,  77 }, { -21,  85 },

  1048.         { -16,  88 }, { -23, 104 }, { -15,  98 }, { -37, 127 },

  1049.         { -10,  82 }, {  -8,  48 }, {  -8,  61 }, {  -8,  66 },

  1050.         {  -7,  70 }, { -14,  75 }, { -10,  79 }, {  -9,  83 },

  1051.         { -12,  92 }, { -18, 108 }, {  -4,  79 }, { -22,  69 },

  1052.         { -16,  75 }, {  -2,  58 }, {   1,  58 }, { -13,  78 },

  1053.         {  -9,  83 }, {  -4,  81 }, { -13,  99 }, { -13,  81 },

  1054.         {  -6,  38 }, { -13,  62 }, {  -6,  58 }, {  -2,  59 },

  1055.         { -16,  73 }, { -10,  76 }, { -13,  86 }, {  -9,  83 },

  1056.         { -10,  87 },

  1057. 

  1058.         /* 276 a bit special (not used, bypass is used instead) */

  1059.         { 0, 0 },

  1060. 

  1061.         /* 277 - 337 */

  1062.         { -22, 127 }, { -25, 127 }, { -25, 120 }, { -27, 127 },

  1063.         { -19, 114 }, { -23, 117 }, { -25, 118 }, { -26, 117 },

  1064.         { -24, 113 }, { -28, 118 }, { -31, 120 }, { -37, 124 },

  1065.         { -10,  94 }, { -15, 102 }, { -10,  99 }, { -13, 106 },

  1066.         { -50, 127 }, {  -5,  92 }, {  17,  57 }, {  -5,  86 },

  1067.         { -13,  94 }, { -12,  91 }, {  -2,  77 }, {   0,  71 },

  1068.         {  -1,  73 }, {   4,  64 }, {  -7,  81 }, {   5,  64 },

  1069.         {  15,  57 }, {   1,  67 }, {   0,  68 }, { -10,  67 },

  1070.         {   1,  68 }, {   0,  77 }, {   2,  64 }, {   0,  68 },

  1071.         {  -5,  78 }, {   7,  55 }, {   5,  59 }, {   2,  65 },

  1072.         {  14,  54 }, {  15,  44 }, {   5,  60 }, {   2,  70 },

  1073.         {  -2,  76 }, { -18,  86 }, {  12,  70 }, {   5,  64 },

  1074.         { -12,  70 }, {  11,  55 }, {   5,  56 }, {   0,  69 },

  1075.         {   2,  65 }, {  -6,  74 }, {   5,  54 }, {   7,  54 },

  1076.         {  -6,  76 }, { -11,  82 }, {  -2,  77 }, {  -2,  77 },

  1077.         {  25,  42 },

  1078. 

  1079.         /* 338 - 398 */

  1080.         {  17, -13 }, {  16,  -9 }, {  17, -12 }, {  27, -21 },

  1081.         {  37, -30 }, {  41, -40 }, {  42, -41 }, {  48, -47 },

  1082.         {  39, -32 }, {  46, -40 }, {  52, -51 }, {  46, -41 },

  1083.         {  52, -39 }, {  43, -19 }, {  32,  11 }, {  61, -55 },

  1084.         {  56, -46 }, {  62, -50 }, {  81, -67 }, {  45, -20 },

  1085.         {  35,  -2 }, {  28,  15 }, {  34,   1 }, {  39,   1 },

  1086.         {  30,  17 }, {  20,  38 }, {  18,  45 }, {  15,  54 },

  1087.         {   0,  79 }, {  36, -16 }, {  37, -14 }, {  37, -17 },

  1088.         {  32,   1 }, {  34,  15 }, {  29,  15 }, {  24,  25 },

  1089.         {  34,  22 }, {  31,  16 }, {  35,  18 }, {  31,  28 },

  1090.         {  33,  41 }, {  36,  28 }, {  27,  47 }, {  21,  62 },

  1091.         {  18,  31 }, {  19,  26 }, {  36,  24 }, {  24,  23 },

  1092.         {  27,  16 }, {  24,  30 }, {  31,  29 }, {  22,  41 },

  1093.         {  22,  42 }, {  16,  60 }, {  15,  52 }, {  14,  60 },

  1094.         {   3,  78 }, { -16, 123 }, {  21,  53 }, {  22,  56 },

  1095.         {  25,  61 },

  1096. 

  1097.         /* 399 - 435 */

  1098.         {  21,  33 }, {  19,  50 }, {  17,  61 },

  1099.         {  -3,  78 }, {  -8,  74 }, {  -9,  72 }, { -10,  72 },

  1100.         { -18,  75 }, { -12,  71 }, { -11,  63 }, {  -5,  70 },

  1101.         { -17,  75 }, { -14,  72 }, { -16,  67 }, {  -8,  53 },

  1102.         { -14,  59 }, {  -9,  52 }, { -11,  68 }, {   9,  -2 },

  1103.         {  30, -10 }, {  31,  -4 }, {  33,  -1 }, {  33,   7 },

  1104.         {  31,  12 }, {  37,  23 }, {  31,  38 }, {  20,  64 },

  1105.         {  -9,  71 }, {  -7,  37 }, {  -8,  44 }, { -11,  49 },

  1106.         { -10,  56 }, { -12,  59 }, {  -8,  63 }, {  -9,  67 },

  1107.         {  -6,  68 }, { -10,  79 },

  1108. 

  1109.         /* 436 - 459 */

  1110.         {  -3,  78 }, {  -8,  74 }, {  -9,  72 }, { -10,  72 },

  1111.         { -18,  75 }, { -12,  71 }, { -11,  63 }, {  -5,  70 },

  1112.         { -17,  75 }, { -14,  72 }, { -16,  67 }, {  -8,  53 },

  1113.         { -14,  59 }, {  -9,  52 }, { -11,  68 }, {   9,  -2 },

  1114.         {  30, -10 }, {  31,  -4 }, {  33,  -1 }, {  33,   7 },

  1115.         {  31,  12 }, {  37,  23 }, {  31,  38 }, {  20,  64 },

  1116. 

  1117.         /* 460 - 1024 */

  1118.         {  11,  80 }, {   5,  76 }, {   2,  84 }, {   5,  78 },

  1119.         {  -6,  55 }, {   4,  61 }, { -14,  83 }, { -37, 127 },

  1120.         {  -5,  79 }, { -11, 104 }, { -11,  91 }, { -30, 127 },

  1121.         {  11,  80 }, {   5,  76 }, {   2,  84 }, {   5,  78 },

  1122.         {  -6,  55 }, {   4,  61 }, { -14,  83 }, { -37, 127 },

  1123.         {  -5,  79 }, { -11, 104 }, { -11,  91 }, { -30, 127 },

  1124.         {  -4,  86 }, { -12,  88 }, {  -5,  82 }, {  -3,  72 },

  1125.         {  -4,  67 }, {  -8,  72 }, { -16,  89 }, {  -9,  69 },

  1126.         {  -1,  59 }, {   5,  66 }, {   4,  57 }, {  -4,  71 },

  1127.         {  -2,  71 }, {   2,  58 }, {  -1,  74 }, {  -4,  44 },

  1128.         {  -1,  69 }, {   0,  62 }, {  -7,  51 }, {  -4,  47 },

  1129.         {  -6,  42 }, {  -3,  41 }, {  -6,  53 }, {   8,  76 },

  1130.         {  -9,  78 }, { -11,  83 }, {   9,  52 }, {   0,  67 },

  1131.         {  -5,  90 }, {   1,  67 }, { -15,  72 }, {  -5,  75 },

  1132.         {  -8,  80 }, { -21,  83 }, { -21,  64 }, { -13,  31 },

  1133.         { -25,  64 }, { -29,  94 }, {   9,  75 }, {  17,  63 },

  1134.         {  -8,  74 }, {  -5,  35 }, {  -2,  27 }, {  13,  91 },

  1135.         {  -4,  86 }, { -12,  88 }, {  -5,  82 }, {  -3,  72 },

  1136.         {  -4,  67 }, {  -8,  72 }, { -16,  89 }, {  -9,  69 },

  1137.         {  -1,  59 }, {   5,  66 }, {   4,  57 }, {  -4,  71 },

  1138.         {  -2,  71 }, {   2,  58 }, {  -1,  74 }, {  -4,  44 },

  1139.         {  -1,  69 }, {   0,  62 }, {  -7,  51 }, {  -4,  47 },

  1140.         {  -6,  42 }, {  -3,  41 }, {  -6,  53 }, {   8,  76 },

  1141.         {  -9,  78 }, { -11,  83 }, {   9,  52 }, {   0,  67 },

  1142.         {  -5,  90 }, {   1,  67 }, { -15,  72 }, {  -5,  75 },

  1143.         {  -8,  80 }, { -21,  83 }, { -21,  64 }, { -13,  31 },

  1144.         { -25,  64 }, { -29,  94 }, {   9,  75 }, {  17,  63 },

  1145.         {  -8,  74 }, {  -5,  35 }, {  -2,  27 }, {  13,  91 },

  1146.         {   4,  39 }, {   0,  42 }, {   7,  34 }, {  11,  29 },

  1147.         {   8,  31 }, {   6,  37 }, {   7,  42 }, {   3,  40 },

  1148.         {   8,  33 }, {  13,  43 }, {  13,  36 }, {   4,  47 },

  1149.         {   3,  55 }, {   2,  58 }, {   6,  60 }, {   8,  44 },

  1150.         {  11,  44 }, {  14,  42 }, {   7,  48 }, {   4,  56 },

  1151.         {   4,  52 }, {  13,  37 }, {   9,  49 }, {  19,  58 },

  1152.         {  10,  48 }, {  12,  45 }, {   0,  69 }, {  20,  33 },

  1153.         {   8,  63 }, {  35, -18 }, {  33, -25 }, {  28,  -3 },

  1154.         {  24,  10 }, {  27,   0 }, {  34, -14 }, {  52, -44 },

  1155.         {  39, -24 }, {  19,  17 }, {  31,  25 }, {  36,  29 },

  1156.         {  24,  33 }, {  34,  15 }, {  30,  20 }, {  22,  73 },

  1157.         {   4,  39 }, {   0,  42 }, {   7,  34 }, {  11,  29 },

  1158.         {   8,  31 }, {   6,  37 }, {   7,  42 }, {   3,  40 },

  1159.         {   8,  33 }, {  13,  43 }, {  13,  36 }, {   4,  47 },

  1160.         {   3,  55 }, {   2,  58 }, {   6,  60 }, {   8,  44 },

  1161.         {  11,  44 }, {  14,  42 }, {   7,  48 }, {   4,  56 },

  1162.         {   4,  52 }, {  13,  37 }, {   9,  49 }, {  19,  58 },

  1163.         {  10,  48 }, {  12,  45 }, {   0,  69 }, {  20,  33 },

  1164.         {   8,  63 }, {  35, -18 }, {  33, -25 }, {  28,  -3 },

  1165.         {  24,  10 }, {  27,   0 }, {  34, -14 }, {  52, -44 },

  1166.         {  39, -24 }, {  19,  17 }, {  31,  25 }, {  36,  29 },

  1167.         {  24,  33 }, {  34,  15 }, {  30,  20 }, {  22,  73 },

  1168.         {  -3,  78 }, {  -8,  74 }, {  -9,  72 }, { -10,  72 },

  1169.         { -18,  75 }, { -12,  71 }, { -11,  63 }, {  -5,  70 },

  1170.         { -17,  75 }, { -14,  72 }, { -16,  67 }, {  -8,  53 },

  1171.         { -14,  59 }, {  -9,  52 }, { -11,  68 }, {  -3,  78 },

  1172.         {  -8,  74 }, {  -9,  72 }, { -10,  72 }, { -18,  75 },

  1173.         { -12,  71 }, { -11,  63 }, {  -5,  70 }, { -17,  75 },

  1174.         { -14,  72 }, { -16,  67 }, {  -8,  53 }, { -14,  59 },

  1175.         {  -9,  52 }, { -11,  68 }, {   9,  -2 }, {  30, -10 },

  1176.         {  31,  -4 }, {  33,  -1 }, {  33,   7 }, {  31,  12 },

  1177.         {  37,  23 }, {  31,  38 }, {  20,  64 }, {   9,  -2 },

  1178.         {  30, -10 }, {  31,  -4 }, {  33,  -1 }, {  33,   7 },

  1179.         {  31,  12 }, {  37,  23 }, {  31,  38 }, {  20,  64 },

  1180.         {  -9,  71 }, {  -7,  37 }, {  -8,  44 }, { -11,  49 },

  1181.         { -10,  56 }, { -12,  59 }, {  -8,  63 }, {  -9,  67 },

  1182.         {  -6,  68 }, { -10,  79 }, {  -3,  78 }, {  -8,  74 },

  1183.         {  -9,  72 }, { -10,  72 }, { -18,  75 }, { -12,  71 },

  1184.         { -11,  63 }, {  -5,  70 }, { -17,  75 }, { -14,  72 },

  1185.         { -16,  67 }, {  -8,  53 }, { -14,  59 }, {  -9,  52 },

  1186.         { -11,  68 }, {  -3,  78 }, {  -8,  74 }, {  -9,  72 },

  1187.         { -10,  72 }, { -18,  75 }, { -12,  71 }, { -11,  63 },

  1188.         {  -5,  70 }, { -17,  75 }, { -14,  72 }, { -16,  67 },

  1189.         {  -8,  53 }, { -14,  59 }, {  -9,  52 }, { -11,  68 },

  1190.         {   9,  -2 }, {  30, -10 }, {  31,  -4 }, {  33,  -1 },

  1191.         {  33,   7 }, {  31,  12 }, {  37,  23 }, {  31,  38 },

  1192.         {  20,  64 }, {   9,  -2 }, {  30, -10 }, {  31,  -4 },

  1193.         {  33,  -1 }, {  33,   7 }, {  31,  12 }, {  37,  23 },

  1194.         {  31,  38 }, {  20,  64 }, {  -9,  71 }, {  -7,  37 },

  1195.         {  -8,  44 }, { -11,  49 }, { -10,  56 }, { -12,  59 },

  1196.         {  -8,  63 }, {  -9,  67 }, {  -6,  68 }, { -10,  79 },

  1197.         { -22, 127 }, { -25, 127 }, { -25, 120 }, { -27, 127 },

  1198.         { -19, 114 }, { -23, 117 }, { -25, 118 }, { -26, 117 },

  1199.         { -24, 113 }, { -28, 118 }, { -31, 120 }, { -37, 124 },

  1200.         { -10,  94 }, { -15, 102 }, { -10,  99 }, { -13, 106 },

  1201.         { -50, 127 }, {  -5,  92 }, {  17,  57 }, {  -5,  86 },

  1202.         { -13,  94 }, { -12,  91 }, {  -2,  77 }, {   0,  71 },

  1203.         {  -1,  73 }, {   4,  64 }, {  -7,  81 }, {   5,  64 },

  1204.         {  15,  57 }, {   1,  67 }, {   0,  68 }, { -10,  67 },

  1205.         {   1,  68 }, {   0,  77 }, {   2,  64 }, {   0,  68 },

  1206.         {  -5,  78 }, {   7,  55 }, {   5,  59 }, {   2,  65 },

  1207.         {  14,  54 }, {  15,  44 }, {   5,  60 }, {   2,  70 },

  1208.         { -22, 127 }, { -25, 127 }, { -25, 120 }, { -27, 127 },

  1209.         { -19, 114 }, { -23, 117 }, { -25, 118 }, { -26, 117 },

  1210.         { -24, 113 }, { -28, 118 }, { -31, 120 }, { -37, 124 },

  1211.         { -10,  94 }, { -15, 102 }, { -10,  99 }, { -13, 106 },

  1212.         { -50, 127 }, {  -5,  92 }, {  17,  57 }, {  -5,  86 },

  1213.         { -13,  94 }, { -12,  91 }, {  -2,  77 }, {   0,  71 },

  1214.         {  -1,  73 }, {   4,  64 }, {  -7,  81 }, {   5,  64 },

  1215.         {  15,  57 }, {   1,  67 }, {   0,  68 }, { -10,  67 },

  1216.         {   1,  68 }, {   0,  77 }, {   2,  64 }, {   0,  68 },

  1217.         {  -5,  78 }, {   7,  55 }, {   5,  59 }, {   2,  65 },

  1218.         {  14,  54 }, {  15,  44 }, {   5,  60 }, {   2,  70 },

  1219.         {  17, -13 }, {  16,  -9 }, {  17, -12 }, {  27, -21 },

  1220.         {  37, -30 }, {  41, -40 }, {  42, -41 }, {  48, -47 },

  1221.         {  39, -32 }, {  46, -40 }, {  52, -51 }, {  46, -41 },

  1222.         {  52, -39 }, {  43, -19 }, {  32,  11 }, {  61, -55 },

  1223.         {  56, -46 }, {  62, -50 }, {  81, -67 }, {  45, -20 },

  1224.         {  35,  -2 }, {  28,  15 }, {  34,   1 }, {  39,   1 },

  1225.         {  30,  17 }, {  20,  38 }, {  18,  45 }, {  15,  54 },

  1226.         {   0,  79 }, {  36, -16 }, {  37, -14 }, {  37, -17 },

  1227.         {  32,   1 }, {  34,  15 }, {  29,  15 }, {  24,  25 },

  1228.         {  34,  22 }, {  31,  16 }, {  35,  18 }, {  31,  28 },

  1229.         {  33,  41 }, {  36,  28 }, {  27,  47 }, {  21,  62 },

  1230.         {  17, -13 }, {  16,  -9 }, {  17, -12 }, {  27, -21 },

  1231.         {  37, -30 }, {  41, -40 }, {  42, -41 }, {  48, -47 },

  1232.         {  39, -32 }, {  46, -40 }, {  52, -51 }, {  46, -41 },

  1233.         {  52, -39 }, {  43, -19 }, {  32,  11 }, {  61, -55 },

  1234.         {  56, -46 }, {  62, -50 }, {  81, -67 }, {  45, -20 },

  1235.         {  35,  -2 }, {  28,  15 }, {  34,   1 }, {  39,   1 },

  1236.         {  30,  17 }, {  20,  38 }, {  18,  45 }, {  15,  54 },

  1237.         {   0,  79 }, {  36, -16 }, {  37, -14 }, {  37, -17 },

  1238.         {  32,   1 }, {  34,  15 }, {  29,  15 }, {  24,  25 },

  1239.         {  34,  22 }, {  31,  16 }, {  35,  18 }, {  31,  28 },

  1240.         {  33,  41 }, {  36,  28 }, {  27,  47 }, {  21,  62 },

  1241.         { -24, 115 }, { -22,  82 }, {  -9,  62 }, {   0,  53 },

  1242.         {   0,  59 }, { -14,  85 }, { -13,  89 }, { -13,  94 },

  1243.         { -11,  92 }, { -29, 127 }, { -21, 100 }, { -14,  57 },

  1244.         { -12,  67 }, { -11,  71 }, { -10,  77 }, { -21,  85 },

  1245.         { -16,  88 }, { -23, 104 }, { -15,  98 }, { -37, 127 },

  1246.         { -10,  82 }, {  -8,  48 }, {  -8,  61 }, {  -8,  66 },

  1247.         {  -7,  70 }, { -14,  75 }, { -10,  79 }, {  -9,  83 },

  1248.         { -12,  92 }, { -18, 108 }, { -24, 115 }, { -22,  82 },

  1249.         {  -9,  62 }, {   0,  53 }, {   0,  59 }, { -14,  85 },

  1250.         { -13,  89 }, { -13,  94 }, { -11,  92 }, { -29, 127 },

  1251.         { -21, 100 }, { -14,  57 }, { -12,  67 }, { -11,  71 },

  1252.         { -10,  77 }, { -21,  85 }, { -16,  88 }, { -23, 104 },

  1253.         { -15,  98 }, { -37, 127 }, { -10,  82 }, {  -8,  48 },

  1254.         {  -8,  61 }, {  -8,  66 }, {  -7,  70 }, { -14,  75 },

  1255.         { -10,  79 }, {  -9,  83 }, { -12,  92 }, { -18, 108 },

  1256.         {  -5,  79 }, { -11, 104 }, { -11,  91 }, { -30, 127 },

  1257.         {  -5,  79 }, { -11, 104 }, { -11,  91 }, { -30, 127 },

  1258.         {  -5,  79 }, { -11, 104 }, { -11,  91 }, { -30, 127 }

  1259.     }

  1260. };

  1261. 

  1262. void ff_h264_init_cabac_states(const H264Context *h, H264SliceContext *sl)

  1263. {

  1264.     int i;

  1265.     const int8_t (*tab)[2];

  1266.     const int slice_qp = av_clip(sl->qscale - 6*(h->ps.sps->bit_depth_luma-8), 0, 51);

  1267. 

  1268.     if (sl->slice_type_nos == AV_PICTURE_TYPE_I) tab = cabac_context_init_I;

  1269.     else                                 tab = cabac_context_init_PB[sl->cabac_init_idc];

  1270. 

  1271.     /* calculate pre-state */

  1272.     for( i= 0; i < 1024; i++ ) {

  1273.         int pre = 2*(((tab[i][0] * slice_qp) >>4 ) + tab[i][1]) - 127;

  1274. 

  1275.         pre^= pre>>31;

  1276.         if(pre > 124)

  1277.             pre= 124 + (pre&1);

  1278. 

  1279.         sl->cabac_state[i] =  pre;

  1280.     }

  1281. }

  1282. 

  1283. static int decode_cabac_field_decoding_flag(const H264Context *h, H264SliceContext *sl)

  1284. {

  1285.     const int mbb_xy = sl->mb_xy - 2*h->mb_stride;

  1286. 

  1287.     unsigned long ctx = 0;

  1288. 

  1289.     ctx += sl->mb_field_decoding_flag & !!sl->mb_x; //for FMO:(s->current_picture.mb_type[mba_xy] >> 7) & (h->slice_table[mba_xy] == h->slice_num);

  1290.     ctx += (h->cur_pic.mb_type[mbb_xy] >> 7) & (h->slice_table[mbb_xy] == sl->slice_num);

  1291. 

  1292.     return get_cabac_noinline( &sl->cabac, &(sl->cabac_state+70)[ctx] );

  1293. }

  1294. 

  1295. static int decode_cabac_intra_mb_type(H264SliceContext *sl,

  1296.                                       int ctx_base, int intra_slice)

  1297. {

  1298.     uint8_t *state= &sl->cabac_state[ctx_base];

  1299.     int mb_type;

  1300. 

  1301.     if(intra_slice){

  1302.         int ctx=0;

  1303.         if (sl->left_type[LTOP] & (MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM))

  1304.             ctx++;

  1305.         if (sl->top_type        & (MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM))

  1306.             ctx++;

  1307.         if( get_cabac_noinline( &sl->cabac, &state[ctx] ) == 0 )

  1308.             return 0;   /* I4x4 */

  1309.         state += 2;

  1310.     }else{

  1311.         if( get_cabac_noinline( &sl->cabac, state ) == 0 )

  1312.             return 0;   /* I4x4 */

  1313.     }

  1314. 

  1315.     if( get_cabac_terminate( &sl->cabac ) )

  1316.         return 25;  /* PCM */

  1317. 

  1318.     mb_type = 1; /* I16x16 */

  1319.     mb_type += 12 * get_cabac_noinline( &sl->cabac, &state[1] ); /* cbp_luma != 0 */

  1320.     if( get_cabac_noinline( &sl->cabac, &state[2] ) ) /* cbp_chroma */

  1321.         mb_type += 4 + 4 * get_cabac_noinline( &sl->cabac, &state[2+intra_slice] );

  1322.     mb_type += 2 * get_cabac_noinline( &sl->cabac, &state[3+intra_slice] );

  1323.     mb_type += 1 * get_cabac_noinline( &sl->cabac, &state[3+2*intra_slice] );

  1324.     return mb_type;

  1325. }

  1326. 

  1327. static int decode_cabac_mb_skip(const H264Context *h, H264SliceContext *sl,

  1328.                                 int mb_x, int mb_y)

  1329. {

  1330.     int mba_xy, mbb_xy;

  1331.     int ctx = 0;

  1332. 

  1333.     if (FRAME_MBAFF(h)) { //FIXME merge with the stuff in fill_caches?

  1334.         int mb_xy = mb_x + (mb_y&~1)*h->mb_stride;

  1335.         mba_xy = mb_xy - 1;

  1336.         if( (mb_y&1)

  1337.             && h->slice_table[mba_xy] == sl->slice_num

  1338.             && MB_FIELD(sl) == !!IS_INTERLACED( h->cur_pic.mb_type[mba_xy] ) )

  1339.             mba_xy += h->mb_stride;

  1340.         if (MB_FIELD(sl)) {

  1341.             mbb_xy = mb_xy - h->mb_stride;

  1342.             if( !(mb_y&1)

  1343.                 && h->slice_table[mbb_xy] == sl->slice_num

  1344.                 && IS_INTERLACED( h->cur_pic.mb_type[mbb_xy] ) )

  1345.                 mbb_xy -= h->mb_stride;

  1346.         }else

  1347.             mbb_xy = mb_x + (mb_y-1)*h->mb_stride;

  1348.     }else{

  1349.         int mb_xy = sl->mb_xy;

  1350.         mba_xy = mb_xy - 1;

  1351.         mbb_xy = mb_xy - (h->mb_stride << FIELD_PICTURE(h));

  1352.     }

  1353. 

  1354.     if( h->slice_table[mba_xy] == sl->slice_num && !IS_SKIP(h->cur_pic.mb_type[mba_xy] ))

  1355.         ctx++;

  1356.     if( h->slice_table[mbb_xy] == sl->slice_num && !IS_SKIP(h->cur_pic.mb_type[mbb_xy] ))

  1357.         ctx++;

  1358. 

  1359.     if (sl->slice_type_nos == AV_PICTURE_TYPE_B)

  1360.         ctx += 13;

  1361.     return get_cabac_noinline( &sl->cabac, &sl->cabac_state[11+ctx] );

  1362. }

  1363. 

  1364. static int decode_cabac_mb_intra4x4_pred_mode(H264SliceContext *sl, int pred_mode)

  1365. {

  1366.     int mode = 0;

  1367. 

  1368.     if( get_cabac( &sl->cabac, &sl->cabac_state[68] ) )

  1369.         return pred_mode;

  1370. 

  1371.     mode += 1 * get_cabac( &sl->cabac, &sl->cabac_state[69] );

  1372.     mode += 2 * get_cabac( &sl->cabac, &sl->cabac_state[69] );

  1373.     mode += 4 * get_cabac( &sl->cabac, &sl->cabac_state[69] );

  1374. 

  1375.     return mode + ( mode >= pred_mode );

  1376. }

  1377. 

  1378. static int decode_cabac_mb_chroma_pre_mode(const H264Context *h, H264SliceContext *sl)

  1379. {

  1380.     const int mba_xy = sl->left_mb_xy[0];

  1381.     const int mbb_xy = sl->top_mb_xy;

  1382. 

  1383.     int ctx = 0;

  1384. 

  1385.     /* No need to test for IS_INTRA4x4 and IS_INTRA16x16, as we set chroma_pred_mode_table to 0 */

  1386.     if (sl->left_type[LTOP] && h->chroma_pred_mode_table[mba_xy] != 0)

  1387.         ctx++;

  1388. 

  1389.     if (sl->top_type        && h->chroma_pred_mode_table[mbb_xy] != 0)

  1390.         ctx++;

  1391. 

  1392.     if( get_cabac_noinline( &sl->cabac, &sl->cabac_state[64+ctx] ) == 0 )

  1393.         return 0;

  1394. 

  1395.     if( get_cabac_noinline( &sl->cabac, &sl->cabac_state[64+3] ) == 0 )

  1396.         return 1;

  1397.     if( get_cabac_noinline( &sl->cabac, &sl->cabac_state[64+3] ) == 0 )

  1398.         return 2;

  1399.     else

  1400.         return 3;

  1401. }

  1402. 

  1403. static int decode_cabac_mb_cbp_luma(H264SliceContext *sl)

  1404. {

  1405.     int cbp_b, cbp_a, ctx, cbp = 0;

  1406. 

  1407.     cbp_a = sl->left_cbp;

  1408.     cbp_b = sl->top_cbp;

  1409. 

  1410.     ctx = !(cbp_a & 0x02) + 2 * !(cbp_b & 0x04);

  1411.     cbp += get_cabac_noinline(&sl->cabac, &sl->cabac_state[73 + ctx]);

  1412.     ctx = !(cbp   & 0x01) + 2 * !(cbp_b & 0x08);

  1413.     cbp += get_cabac_noinline(&sl->cabac, &sl->cabac_state[73 + ctx]) << 1;

  1414.     ctx = !(cbp_a & 0x08) + 2 * !(cbp   & 0x01);

  1415.     cbp += get_cabac_noinline(&sl->cabac, &sl->cabac_state[73 + ctx]) << 2;

  1416.     ctx = !(cbp   & 0x04) + 2 * !(cbp   & 0x02);

  1417.     cbp += get_cabac_noinline(&sl->cabac, &sl->cabac_state[73 + ctx]) << 3;

  1418.     return cbp;

  1419. }

  1420. static int decode_cabac_mb_cbp_chroma(H264SliceContext *sl)

  1421. {

  1422.     int ctx;

  1423.     int cbp_a, cbp_b;

  1424. 

  1425.     cbp_a = (sl->left_cbp>>4)&0x03;

  1426.     cbp_b = (sl-> top_cbp>>4)&0x03;

  1427. 

  1428.     ctx = 0;

  1429.     if( cbp_a > 0 ) ctx++;

  1430.     if( cbp_b > 0 ) ctx += 2;

  1431.     if( get_cabac_noinline( &sl->cabac, &sl->cabac_state[77 + ctx] ) == 0 )

  1432.         return 0;

  1433. 

  1434.     ctx = 4;

  1435.     if( cbp_a == 2 ) ctx++;

  1436.     if( cbp_b == 2 ) ctx += 2;

  1437.     return 1 + get_cabac_noinline( &sl->cabac, &sl->cabac_state[77 + ctx] );

  1438. }

  1439. 

  1440. static int decode_cabac_p_mb_sub_type(H264SliceContext *sl)

  1441. {

  1442.     if( get_cabac( &sl->cabac, &sl->cabac_state[21] ) )

  1443.         return 0;   /* 8x8 */

  1444.     if( !get_cabac( &sl->cabac, &sl->cabac_state[22] ) )

  1445.         return 1;   /* 8x4 */

  1446.     if( get_cabac( &sl->cabac, &sl->cabac_state[23] ) )

  1447.         return 2;   /* 4x8 */

  1448.     return 3;       /* 4x4 */

  1449. }

  1450. static int decode_cabac_b_mb_sub_type(H264SliceContext *sl)

  1451. {

  1452.     int type;

  1453.     if( !get_cabac( &sl->cabac, &sl->cabac_state[36] ) )

  1454.         return 0;   /* B_Direct_8x8 */

  1455.     if( !get_cabac( &sl->cabac, &sl->cabac_state[37] ) )

  1456.         return 1 + get_cabac( &sl->cabac, &sl->cabac_state[39] ); /* B_L0_8x8, B_L1_8x8 */

  1457.     type = 3;

  1458.     if( get_cabac( &sl->cabac, &sl->cabac_state[38] ) ) {

  1459.         if( get_cabac( &sl->cabac, &sl->cabac_state[39] ) )

  1460.             return 11 + get_cabac( &sl->cabac, &sl->cabac_state[39] ); /* B_L1_4x4, B_Bi_4x4 */

  1461.         type += 4;

  1462.     }

  1463.     type += 2*get_cabac( &sl->cabac, &sl->cabac_state[39] );

  1464.     type +=   get_cabac( &sl->cabac, &sl->cabac_state[39] );

  1465.     return type;

  1466. }

  1467. 

  1468. static int decode_cabac_mb_ref(H264SliceContext *sl, int list, int n)

  1469. {

  1470.     int refa = sl->ref_cache[list][scan8[n] - 1];

  1471.     int refb = sl->ref_cache[list][scan8[n] - 8];

  1472.     int ref  = 0;

  1473.     int ctx  = 0;

  1474. 

  1475.     if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {

  1476.         if( refa > 0 && !(sl->direct_cache[scan8[n] - 1]&(MB_TYPE_DIRECT2>>1)) )

  1477.             ctx++;

  1478.         if( refb > 0 && !(sl->direct_cache[scan8[n] - 8]&(MB_TYPE_DIRECT2>>1)) )

  1479.             ctx += 2;

  1480.     } else {

  1481.         if( refa > 0 )

  1482.             ctx++;

  1483.         if( refb > 0 )

  1484.             ctx += 2;

  1485.     }

  1486. 

  1487.     while( get_cabac( &sl->cabac, &sl->cabac_state[54+ctx] ) ) {

  1488.         ref++;

  1489.         ctx = (ctx>>2)+4;

  1490.         if(ref >= 32 /*h->ref_list[list]*/){

  1491.             return -1;

  1492.         }

  1493.     }

  1494.     return ref;

  1495. }

  1496. 

  1497. static int decode_cabac_mb_mvd(H264SliceContext *sl, int ctxbase, int amvd, int *mvda)

  1498. {

  1499.     int mvd;

  1500. 

  1501.     if(!get_cabac(&sl->cabac, &sl->cabac_state[ctxbase+((amvd-3)>>(INT_BIT-1))+((amvd-33)>>(INT_BIT-1))+2])){

  1502. //    if(!get_cabac(&sl->cabac, &sl->cabac_state[ctxbase+(amvd>2)+(amvd>32)])){

  1503.         *mvda= 0;

  1504.         return 0;

  1505.     }

  1506. 

  1507.     mvd= 1;

  1508.     ctxbase+= 3;

  1509.     while( mvd < 9 && get_cabac( &sl->cabac, &sl->cabac_state[ctxbase] ) ) {

  1510.         if( mvd < 4 )

  1511.             ctxbase++;

  1512.         mvd++;

  1513.     }

  1514. 

  1515.     if( mvd >= 9 ) {

  1516.         int k = 3;

  1517.         while( get_cabac_bypass( &sl->cabac ) ) {

  1518.             mvd += 1 << k;

  1519.             k++;

  1520.             if(k>24){

  1521.                 av_log(sl->h264->avctx, AV_LOG_ERROR, "overflow in decode_cabac_mb_mvd\n");

  1522.                 return INT_MIN;

  1523.             }

  1524.         }

  1525.         while( k-- ) {

  1526.             mvd += get_cabac_bypass( &sl->cabac )<<k;

  1527.         }

  1528.         *mvda=mvd < 70 ? mvd : 70;

  1529.     }else

  1530.         *mvda=mvd;

  1531.     return get_cabac_bypass_sign( &sl->cabac, -mvd );

  1532. }

  1533. 

  1534. #define DECODE_CABAC_MB_MVD(sl, list,  n )\

  1535. {\

  1536.     int amvd0 = sl->mvd_cache[list][scan8[n] - 1][0] +\

  1537.                 sl->mvd_cache[list][scan8[n] - 8][0];\

  1538.     int amvd1 = sl->mvd_cache[list][scan8[n] - 1][1] +\

  1539.                 sl->mvd_cache[list][scan8[n] - 8][1];\

  1540. \

  1541.     int mxd = decode_cabac_mb_mvd(sl, 40, amvd0, &mpx);\

  1542.     int myd = decode_cabac_mb_mvd(sl, 47, amvd1, &mpy);\

  1543.     if (mxd == INT_MIN || myd == INT_MIN) \

  1544.         return AVERROR_INVALIDDATA; \

  1545.     mx += mxd;\

  1546.     my += myd;\

  1547. }

  1548. 

  1549. static av_always_inline int get_cabac_cbf_ctx(H264SliceContext *sl,

  1550.                                               int cat, int idx, int max_coeff,

  1551.                                               int is_dc)

  1552. {

  1553.     int nza, nzb;

  1554.     int ctx = 0;

  1555.     static const uint16_t base_ctx[14] = {85,89,93,97,101,1012,460,464,468,1016,472,476,480,1020};

  1556. 

  1557.     if( is_dc ) {

  1558.         if( cat == 3 ) {

  1559.             idx -= CHROMA_DC_BLOCK_INDEX;

  1560.             nza = (sl->left_cbp>>(6+idx))&0x01;

  1561.             nzb = (sl-> top_cbp>>(6+idx))&0x01;

  1562.         } else {

  1563.             idx -= LUMA_DC_BLOCK_INDEX;

  1564.             nza = sl->left_cbp&(0x100<<idx);

  1565.             nzb = sl-> top_cbp&(0x100<<idx);

  1566.         }

  1567.     } else {

  1568.         nza = sl->non_zero_count_cache[scan8[idx] - 1];

  1569.         nzb = sl->non_zero_count_cache[scan8[idx] - 8];

  1570.     }

  1571. 

  1572.     if( nza > 0 )

  1573.         ctx++;

  1574. 

  1575.     if( nzb > 0 )

  1576.         ctx += 2;

  1577. 

  1578.     return base_ctx[cat] + ctx;

  1579. }

  1580. 

  1581. static av_always_inline void

  1582. decode_cabac_residual_internal(const H264Context *h, H264SliceContext *sl,

  1583.                                int16_t *block,

  1584.                                int cat, int n, const uint8_t *scantable,

  1585.                                const uint32_t *qmul, int max_coeff,

  1586.                                int is_dc, int chroma422)

  1587. {

  1588.     static const int significant_coeff_flag_offset[2][14] = {

  1589.       { 105+0, 105+15, 105+29, 105+44, 105+47, 402, 484+0, 484+15, 484+29, 660, 528+0, 528+15, 528+29, 718 },

  1590.       { 277+0, 277+15, 277+29, 277+44, 277+47, 436, 776+0, 776+15, 776+29, 675, 820+0, 820+15, 820+29, 733 }

  1591.     };

  1592.     static const int last_coeff_flag_offset[2][14] = {

  1593.       { 166+0, 166+15, 166+29, 166+44, 166+47, 417, 572+0, 572+15, 572+29, 690, 616+0, 616+15, 616+29, 748 },

  1594.       { 338+0, 338+15, 338+29, 338+44, 338+47, 451, 864+0, 864+15, 864+29, 699, 908+0, 908+15, 908+29, 757 }

  1595.     };

  1596.     static const int coeff_abs_level_m1_offset[14] = {

  1597.         227+0, 227+10, 227+20, 227+30, 227+39, 426, 952+0, 952+10, 952+20, 708, 982+0, 982+10, 982+20, 766

  1598.     };

  1599.     static const uint8_t significant_coeff_flag_offset_8x8[2][63] = {

  1600.       { 0, 1, 2, 3, 4, 5, 5, 4, 4, 3, 3, 4, 4, 4, 5, 5,

  1601.         4, 4, 4, 4, 3, 3, 6, 7, 7, 7, 8, 9,10, 9, 8, 7,

  1602.         7, 6,11,12,13,11, 6, 7, 8, 9,14,10, 9, 8, 6,11,

  1603.        12,13,11, 6, 9,14,10, 9,11,12,13,11,14,10,12 },

  1604.       { 0, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 7, 7, 8, 4, 5,

  1605.         6, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,11,12,11,

  1606.         9, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,13,13, 9,

  1607.         9,10,10, 8,13,13, 9, 9,10,10,14,14,14,14,14 }

  1608.     };

  1609.     static const uint8_t sig_coeff_offset_dc[7] = { 0, 0, 1, 1, 2, 2, 2 };

  1610.     /* node ctx: 0..3: abslevel1 (with abslevelgt1 == 0).

  1611.      * 4..7: abslevelgt1 + 3 (and abslevel1 doesn't matter).

  1612.      * map node ctx => cabac ctx for level=1 */

  1613.     static const uint8_t coeff_abs_level1_ctx[8] = { 1, 2, 3, 4, 0, 0, 0, 0 };

  1614.     /* map node ctx => cabac ctx for level>1 */

  1615.     static const uint8_t coeff_abs_levelgt1_ctx[2][8] = {

  1616.         { 5, 5, 5, 5, 6, 7, 8, 9 },

  1617.         { 5, 5, 5, 5, 6, 7, 8, 8 }, // 422/dc case

  1618.     };

  1619.     static const uint8_t coeff_abs_level_transition[2][8] = {

  1620.     /* update node ctx after decoding a level=1 */

  1621.         { 1, 2, 3, 3, 4, 5, 6, 7 },

  1622.     /* update node ctx after decoding a level>1 */

  1623.         { 4, 4, 4, 4, 5, 6, 7, 7 }

  1624.     };

  1625. 

  1626.     int index[64];

  1627. 

  1628.     int last;

  1629.     int coeff_count = 0;

  1630.     int node_ctx = 0;

  1631. 

  1632.     uint8_t *significant_coeff_ctx_base;

  1633.     uint8_t *last_coeff_ctx_base;

  1634.     uint8_t *abs_level_m1_ctx_base;

  1635. 

  1636. #if !ARCH_X86

  1637. #define CABAC_ON_STACK

  1638. #endif

  1639. #ifdef CABAC_ON_STACK

  1640. #define CC &cc

  1641.     CABACContext cc;

  1642.     cc.range     = sl->cabac.range;

  1643.     cc.low       = sl->cabac.low;

  1644.     cc.bytestream= sl->cabac.bytestream;

  1645. #if !UNCHECKED_BITSTREAM_READER || ARCH_AARCH64

  1646.     cc.bytestream_end = sl->cabac.bytestream_end;

  1647. #endif

  1648. #else

  1649. #define CC &sl->cabac

  1650. #endif

  1651. 

  1652.     significant_coeff_ctx_base = sl->cabac_state

  1653.         + significant_coeff_flag_offset[MB_FIELD(sl)][cat];

  1654.     last_coeff_ctx_base = sl->cabac_state

  1655.         + last_coeff_flag_offset[MB_FIELD(sl)][cat];

  1656.     abs_level_m1_ctx_base = sl->cabac_state

  1657.         + coeff_abs_level_m1_offset[cat];

  1658. 

  1659.     if( !is_dc && max_coeff == 64 ) {

  1660. #define DECODE_SIGNIFICANCE( coefs, sig_off, last_off ) \

  1661.         for(last= 0; last < coefs; last++) { \

  1662.             uint8_t *sig_ctx = significant_coeff_ctx_base + sig_off; \

  1663.             if( get_cabac( CC, sig_ctx )) { \

  1664.                 uint8_t *last_ctx = last_coeff_ctx_base + last_off; \

  1665.                 index[coeff_count++] = last; \

  1666.                 if( get_cabac( CC, last_ctx ) ) { \

  1667.                     last= max_coeff; \

  1668.                     break; \

  1669.                 } \

  1670.             } \

  1671.         }\

  1672.         if( last == max_coeff -1 ) {\

  1673.             index[coeff_count++] = last;\

  1674.         }

  1675.         const uint8_t *sig_off = significant_coeff_flag_offset_8x8[MB_FIELD(sl)];

  1676. #ifdef decode_significance

  1677.         coeff_count = decode_significance_8x8(CC, significant_coeff_ctx_base, index,

  1678.                                                  last_coeff_ctx_base, sig_off);

  1679.     } else {

  1680.         if (is_dc && chroma422) { // dc 422

  1681.             DECODE_SIGNIFICANCE(7, sig_coeff_offset_dc[last], sig_coeff_offset_dc[last]);

  1682.         } else {

  1683.             coeff_count = decode_significance(CC, max_coeff, significant_coeff_ctx_base, index,

  1684.                                                  last_coeff_ctx_base-significant_coeff_ctx_base);

  1685.         }

  1686. #else

  1687.         DECODE_SIGNIFICANCE( 63, sig_off[last], ff_h264_last_coeff_flag_offset_8x8[last] );

  1688.     } else {

  1689.         if (is_dc && chroma422) { // dc 422

  1690.             DECODE_SIGNIFICANCE(7, sig_coeff_offset_dc[last], sig_coeff_offset_dc[last]);

  1691.         } else {

  1692.             DECODE_SIGNIFICANCE(max_coeff - 1, last, last);

  1693.         }

  1694. #endif

  1695.     }

  1696.     av_assert2(coeff_count > 0);

  1697. 

  1698.     if( is_dc ) {

  1699.         if( cat == 3 )

  1700.             h->cbp_table[sl->mb_xy] |= 0x40 << (n - CHROMA_DC_BLOCK_INDEX);

  1701.         else

  1702.             h->cbp_table[sl->mb_xy] |= 0x100 << (n - LUMA_DC_BLOCK_INDEX);

  1703.         sl->non_zero_count_cache[scan8[n]] = coeff_count;

  1704.     } else {

  1705.         if( max_coeff == 64 )

  1706.             fill_rectangle(&sl->non_zero_count_cache[scan8[n]], 2, 2, 8, coeff_count, 1);

  1707.         else {

  1708.             av_assert2( cat == 1 || cat ==  2 || cat ==  4 || cat == 7 || cat == 8 || cat == 11 || cat == 12 );

  1709.             sl->non_zero_count_cache[scan8[n]] = coeff_count;

  1710.         }

  1711.     }

  1712. 

  1713. #define STORE_BLOCK(type) \

  1714.     do { \

  1715.         uint8_t *ctx = coeff_abs_level1_ctx[node_ctx] + abs_level_m1_ctx_base; \

  1716.  \

  1717.         int j= scantable[index[--coeff_count]]; \

  1718.  \

  1719.         if( get_cabac( CC, ctx ) == 0 ) { \

  1720.             node_ctx = coeff_abs_level_transition[0][node_ctx]; \

  1721.             if( is_dc ) { \

  1722.                 ((type*)block)[j] = get_cabac_bypass_sign( CC, -1); \

  1723.             }else{ \

  1724.                 ((type*)block)[j] = (get_cabac_bypass_sign( CC, -qmul[j]) + 32) >> 6; \

  1725.             } \

  1726.         } else { \

  1727.             unsigned coeff_abs = 2; \

  1728.             ctx = coeff_abs_levelgt1_ctx[is_dc && chroma422][node_ctx] + abs_level_m1_ctx_base; \

  1729.             node_ctx = coeff_abs_level_transition[1][node_ctx]; \

  1730. \

  1731.             while( coeff_abs < 15 && get_cabac( CC, ctx ) ) { \

  1732.                 coeff_abs++; \

  1733.             } \

  1734. \

  1735.             if( coeff_abs >= 15 ) { \

  1736.                 int j = 0; \

  1737.                 while (get_cabac_bypass(CC) && j < 16+7) { \

  1738.                     j++; \

  1739.                 } \

  1740. \

  1741.                 coeff_abs=1; \

  1742.                 while( j-- ) { \

  1743.                     coeff_abs += coeff_abs + get_cabac_bypass( CC ); \

  1744.                 } \

  1745.                 coeff_abs+= 14U; \

  1746.             } \

  1747. \

  1748.             if( is_dc ) { \

  1749.                 ((type*)block)[j] = get_cabac_bypass_sign( CC, -coeff_abs ); \

  1750.             }else{ \

  1751.                 ((type*)block)[j] = ((int)(get_cabac_bypass_sign( CC, -coeff_abs ) * qmul[j] + 32)) >> 6; \

  1752.             } \

  1753.         } \

  1754.     } while ( coeff_count );

  1755. 

  1756.     if (h->pixel_shift) {

  1757.         STORE_BLOCK(int32_t)

  1758.     } else {

  1759.         STORE_BLOCK(int16_t)

  1760.     }

  1761. #ifdef CABAC_ON_STACK

  1762.             sl->cabac.range     = cc.range     ;

  1763.             sl->cabac.low       = cc.low       ;

  1764.             sl->cabac.bytestream= cc.bytestream;

  1765. #endif

  1766. 

  1767. }

  1768. 

  1769. static av_noinline void decode_cabac_residual_dc_internal(const H264Context *h,

  1770.                                                           H264SliceContext *sl,

  1771.                                                           int16_t *block,

  1772.                                                           int cat, int n,

  1773.                                                           const uint8_t *scantable,

  1774.                                                           int max_coeff)

  1775. {

  1776.     decode_cabac_residual_internal(h, sl, block, cat, n, scantable, NULL, max_coeff, 1, 0);

  1777. }

  1778. 

  1779. static av_noinline void decode_cabac_residual_dc_internal_422(const H264Context *h,

  1780.                                                               H264SliceContext *sl,

  1781.                                                               int16_t *block,

  1782.                                                               int cat, int n,

  1783.                                                               const uint8_t *scantable,

  1784.                                                               int max_coeff)

  1785. {

  1786.     decode_cabac_residual_internal(h, sl, block, cat, n, scantable, NULL, max_coeff, 1, 1);

  1787. }

  1788. 

  1789. static av_noinline void decode_cabac_residual_nondc_internal(const H264Context *h,

  1790.                                                              H264SliceContext *sl,

  1791.                                                              int16_t *block,

  1792.                                                              int cat, int n,

  1793.                                                              const uint8_t *scantable,

  1794.                                                              const uint32_t *qmul,

  1795.                                                              int max_coeff)

  1796. {

  1797.     decode_cabac_residual_internal(h, sl, block, cat, n, scantable, qmul, max_coeff, 0, 0);

  1798. }

  1799. 

  1800. /* cat: 0-> DC 16x16  n = 0

  1801.  *      1-> AC 16x16  n = luma4x4idx

  1802.  *      2-> Luma4x4   n = luma4x4idx

  1803.  *      3-> DC Chroma n = iCbCr

  1804.  *      4-> AC Chroma n = 16 + 4 * iCbCr + chroma4x4idx

  1805.  *      5-> Luma8x8   n = 4 * luma8x8idx */

  1806. 

  1807. /* Partially inline the CABAC residual decode: inline the coded block flag.

  1808.  * This has very little impact on binary size and improves performance

  1809.  * because it allows improved constant propagation into get_cabac_cbf_ctx,

  1810.  * as well as because most blocks have zero CBFs. */

  1811. 

  1812. static av_always_inline void decode_cabac_residual_dc(const H264Context *h,

  1813.                                                       H264SliceContext *sl,

  1814.                                                       int16_t *block,

  1815.                                                       int cat, int n,

  1816.                                                       const uint8_t *scantable,

  1817.                                                       int max_coeff)

  1818. {

  1819.     /* read coded block flag */

  1820.     if( get_cabac( &sl->cabac, &sl->cabac_state[get_cabac_cbf_ctx(sl, cat, n, max_coeff, 1)]) == 0 ) {

  1821.         sl->non_zero_count_cache[scan8[n]] = 0;

  1822.         return;

  1823.     }

  1824.     decode_cabac_residual_dc_internal(h, sl, block, cat, n, scantable, max_coeff);

  1825. }

  1826. 

  1827. static av_always_inline void

  1828. decode_cabac_residual_dc_422(const H264Context *h, H264SliceContext *sl,

  1829.                              int16_t *block,

  1830.                              int cat, int n, const uint8_t *scantable,

  1831.                              int max_coeff)

  1832. {

  1833.     /* read coded block flag */

  1834.     if (get_cabac(&sl->cabac, &sl->cabac_state[get_cabac_cbf_ctx(sl, cat, n, max_coeff, 1)]) == 0) {

  1835.         sl->non_zero_count_cache[scan8[n]] = 0;

  1836.         return;

  1837.     }

  1838.     decode_cabac_residual_dc_internal_422(h, sl, block, cat, n, scantable, max_coeff);

  1839. }

  1840. 

  1841. static av_always_inline void decode_cabac_residual_nondc(const H264Context *h,

  1842.                                                          H264SliceContext *sl,

  1843.                                                          int16_t *block,

  1844.                                                          int cat, int n,

  1845.                                                          const uint8_t *scantable,

  1846.                                                          const uint32_t *qmul,

  1847.                                                          int max_coeff)

  1848. {

  1849.     /* read coded block flag */

  1850.     if( (cat != 5 || CHROMA444(h)) && get_cabac( &sl->cabac, &sl->cabac_state[get_cabac_cbf_ctx(sl, cat, n, max_coeff, 0)]) == 0) {

  1851.         if( max_coeff == 64 ) {

  1852.             fill_rectangle(&sl->non_zero_count_cache[scan8[n]], 2, 2, 8, 0, 1);

  1853.         } else {

  1854.             sl->non_zero_count_cache[scan8[n]] = 0;

  1855.         }

  1856.         return;

  1857.     }

  1858.     decode_cabac_residual_nondc_internal(h, sl, block, cat, n, scantable, qmul, max_coeff);

  1859. }

  1860. 

  1861. static av_always_inline void decode_cabac_luma_residual(const H264Context *h, H264SliceContext *sl,

  1862.                                                         const uint8_t *scan, const uint8_t *scan8x8,

  1863.                                                         int pixel_shift, int mb_type, int cbp, int p)

  1864. {

  1865.     static const uint8_t ctx_cat[4][3] = {{0,6,10},{1,7,11},{2,8,12},{5,9,13}};

  1866.     const uint32_t *qmul;

  1867.     int i8x8, i4x4;

  1868.     int qscale = p == 0 ? sl->qscale : sl->chroma_qp[p - 1];

  1869.     if( IS_INTRA16x16( mb_type ) ) {

  1870.         AV_ZERO128(sl->mb_luma_dc[p]+0);

  1871.         AV_ZERO128(sl->mb_luma_dc[p]+8);

  1872.         AV_ZERO128(sl->mb_luma_dc[p]+16);

  1873.         AV_ZERO128(sl->mb_luma_dc[p]+24);

  1874.         decode_cabac_residual_dc(h, sl, sl->mb_luma_dc[p], ctx_cat[0][p], LUMA_DC_BLOCK_INDEX+p, scan, 16);

  1875. 

  1876.         if( cbp&15 ) {

  1877.             qmul = h->ps.pps->dequant4_coeff[p][qscale];

  1878.             for( i4x4 = 0; i4x4 < 16; i4x4++ ) {

  1879.                 const int index = 16*p + i4x4;

  1880.                 decode_cabac_residual_nondc(h, sl, sl->mb + (16*index << pixel_shift), ctx_cat[1][p], index, scan + 1, qmul, 15);

  1881.             }

  1882.         } else {

  1883.             fill_rectangle(&sl->non_zero_count_cache[scan8[16*p]], 4, 4, 8, 0, 1);

  1884.         }

  1885.     } else {

  1886.         int cqm = (IS_INTRA( mb_type ) ? 0:3) + p;

  1887.         for( i8x8 = 0; i8x8 < 4; i8x8++ ) {

  1888.             if( cbp & (1<<i8x8) ) {

  1889.                 if( IS_8x8DCT(mb_type) ) {

  1890.                     const int index = 16*p + 4*i8x8;

  1891.                     decode_cabac_residual_nondc(h, sl, sl->mb + (16*index << pixel_shift), ctx_cat[3][p], index,

  1892.                                                 scan8x8, h->ps.pps->dequant8_coeff[cqm][qscale], 64);

  1893.                 } else {

  1894.                     qmul = h->ps.pps->dequant4_coeff[cqm][qscale];

  1895.                     for( i4x4 = 0; i4x4 < 4; i4x4++ ) {

  1896.                         const int index = 16*p + 4*i8x8 + i4x4;

  1897.                         decode_cabac_residual_nondc(h, sl, sl->mb + (16*index << pixel_shift), ctx_cat[2][p], index, scan, qmul, 16);

  1898.                     }

  1899.                 }

  1900.             } else {

  1901.                 fill_rectangle(&sl->non_zero_count_cache[scan8[4*i8x8+16*p]], 2, 2, 8, 0, 1);

  1902.             }

  1903.         }

  1904.     }

  1905. }

  1906. 

  1907. /**

  1908.  * Decode a macroblock.

  1909.  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR if an error is noticed

  1910.  */

  1911. int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)

  1912. {

  1913.     const SPS *sps = h->ps.sps;

  1914.     int mb_xy;

  1915.     int mb_type, partition_count, cbp = 0;

  1916.     int dct8x8_allowed = h->ps.pps->transform_8x8_mode;

  1917.     const int decode_chroma = sps->chroma_format_idc == 1 || sps->chroma_format_idc == 2;

  1918.     const int pixel_shift = h->pixel_shift;

  1919. 

  1920.     mb_xy = sl->mb_xy = sl->mb_x + sl->mb_y*h->mb_stride;

  1921. 

  1922.     ff_tlog(h->avctx, "pic:%d mb:%d/%d\n", h->poc.frame_num, sl->mb_x, sl->mb_y);

  1923.     if (sl->slice_type_nos != AV_PICTURE_TYPE_I) {

  1924.         int skip;

  1925.         /* a skipped mb needs the aff flag from the following mb */

  1926.         if (FRAME_MBAFF(h) && (sl->mb_y & 1) == 1 && sl->prev_mb_skipped)

  1927.             skip = sl->next_mb_skipped;

  1928.         else

  1929.             skip = decode_cabac_mb_skip(h, sl, sl->mb_x, sl->mb_y );

  1930.         /* read skip flags */

  1931.         if( skip ) {

  1932.             if (FRAME_MBAFF(h) && (sl->mb_y & 1) == 0) {

  1933.                 h->cur_pic.mb_type[mb_xy] = MB_TYPE_SKIP;

  1934.                 sl->next_mb_skipped = decode_cabac_mb_skip(h, sl, sl->mb_x, sl->mb_y+1 );

  1935.                 if(!sl->next_mb_skipped)

  1936.                     sl->mb_mbaff = sl->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h, sl);

  1937.             }

  1938. 

  1939.             decode_mb_skip(h, sl);

  1940. 

  1941.             h->cbp_table[mb_xy] = 0;

  1942.             h->chroma_pred_mode_table[mb_xy] = 0;

  1943.             sl->last_qscale_diff = 0;

  1944. 

  1945.             return 0;

  1946. 

  1947.         }

  1948.     }

  1949.     if (FRAME_MBAFF(h)) {

  1950.         if ((sl->mb_y & 1) == 0)

  1951.             sl->mb_mbaff =

  1952.             sl->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h, sl);

  1953.     }

  1954. 

  1955.     sl->prev_mb_skipped = 0;

  1956. 

  1957.     fill_decode_neighbors(h, sl, -(MB_FIELD(sl)));

  1958. 

  1959.     if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {

  1960.         int ctx = 0;

  1961.         av_assert2(sl->slice_type_nos == AV_PICTURE_TYPE_B);

  1962. 

  1963.         if (!IS_DIRECT(sl->left_type[LTOP] - 1))

  1964.             ctx++;

  1965.         if (!IS_DIRECT(sl->top_type - 1))

  1966.             ctx++;

  1967. 

  1968.         if( !get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+ctx] ) ){

  1969.             mb_type= 0; /* B_Direct_16x16 */

  1970.         }else if( !get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+3] ) ) {

  1971.             mb_type= 1 + get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+5] ); /* B_L[01]_16x16 */

  1972.         }else{

  1973.             int bits;

  1974.             bits = get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+4] ) << 3;

  1975.             bits+= get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+5] ) << 2;

  1976.             bits+= get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+5] ) << 1;

  1977.             bits+= get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+5] );

  1978.             if( bits < 8 ){

  1979.                 mb_type= bits + 3; /* B_Bi_16x16 through B_L1_L0_16x8 */

  1980.             }else if( bits == 13 ){

  1981.                 mb_type = decode_cabac_intra_mb_type(sl, 32, 0);

  1982.                 goto decode_intra_mb;

  1983.             }else if( bits == 14 ){

  1984.                 mb_type= 11; /* B_L1_L0_8x16 */

  1985.             }else if( bits == 15 ){

  1986.                 mb_type= 22; /* B_8x8 */

  1987.             }else{

  1988.                 bits= ( bits<<1 ) + get_cabac_noinline( &sl->cabac, &sl->cabac_state[27+5] );

  1989.                 mb_type= bits - 4; /* B_L0_Bi_* through B_Bi_Bi_* */

  1990.             }

  1991.         }

  1992.             partition_count = ff_h264_b_mb_type_info[mb_type].partition_count;

  1993.             mb_type         = ff_h264_b_mb_type_info[mb_type].type;

  1994.     } else if (sl->slice_type_nos == AV_PICTURE_TYPE_P) {

  1995.         if( get_cabac_noinline( &sl->cabac, &sl->cabac_state[14] ) == 0 ) {

  1996.             /* P-type */

  1997.             if( get_cabac_noinline( &sl->cabac, &sl->cabac_state[15] ) == 0 ) {

  1998.                 /* P_L0_D16x16, P_8x8 */

  1999.                 mb_type= 3 * get_cabac_noinline( &sl->cabac, &sl->cabac_state[16] );

  2000.             } else {

  2001.                 /* P_L0_D8x16, P_L0_D16x8 */

  2002.                 mb_type= 2 - get_cabac_noinline( &sl->cabac, &sl->cabac_state[17] );

  2003.             }

  2004.             partition_count = ff_h264_p_mb_type_info[mb_type].partition_count;

  2005.             mb_type         = ff_h264_p_mb_type_info[mb_type].type;

  2006.         } else {

  2007.             mb_type = decode_cabac_intra_mb_type(sl, 17, 0);

  2008.             goto decode_intra_mb;

  2009.         }

  2010.     } else {

  2011.         mb_type = decode_cabac_intra_mb_type(sl, 3, 1);

  2012.         if (sl->slice_type == AV_PICTURE_TYPE_SI && mb_type)

  2013.             mb_type--;

  2014.         av_assert2(sl->slice_type_nos == AV_PICTURE_TYPE_I);

  2015. decode_intra_mb:

  2016.         partition_count = 0;

  2017.         cbp                      = ff_h264_i_mb_type_info[mb_type].cbp;

  2018.         sl->intra16x16_pred_mode = ff_h264_i_mb_type_info[mb_type].pred_mode;

  2019.         mb_type                  = ff_h264_i_mb_type_info[mb_type].type;

  2020.     }

  2021.     if (MB_FIELD(sl))

  2022.         mb_type |= MB_TYPE_INTERLACED;

  2023. 

  2024.     h->slice_table[mb_xy] = sl->slice_num;

  2025. 

  2026.     if(IS_INTRA_PCM(mb_type)) {

  2027.         const int mb_size = ff_h264_mb_sizes[sps->chroma_format_idc] *

  2028.                             sps->bit_depth_luma >> 3;

  2029.         const uint8_t *ptr;

  2030.         int ret;

  2031. 

  2032.         // We assume these blocks are very rare so we do not optimize it.

  2033.         // FIXME The two following lines get the bitstream position in the cabac

  2034.         // decode, I think it should be done by a function in cabac.h (or cabac.c).

  2035.         ptr= sl->cabac.bytestream;

  2036.         if(sl->cabac.low&0x1) ptr--;

  2037.         if(CABAC_BITS==16){

  2038.             if(sl->cabac.low&0x1FF) ptr--;

  2039.         }

  2040. 

  2041.         // The pixels are stored in the same order as levels in h->mb array.

  2042.         if ((int) (sl->cabac.bytestream_end - ptr) < mb_size)

  2043.             return -1;

  2044.         sl->intra_pcm_ptr = ptr;

  2045.         ptr += mb_size;

  2046. 

  2047.         ret = ff_init_cabac_decoder(&sl->cabac, ptr, sl->cabac.bytestream_end - ptr);

  2048.         if (ret < 0)

  2049.             return ret;

  2050. 

  2051.         // All blocks are present

  2052.         h->cbp_table[mb_xy] = 0xf7ef;

  2053.         h->chroma_pred_mode_table[mb_xy] = 0;

  2054.         // In deblocking, the quantizer is 0

  2055.         h->cur_pic.qscale_table[mb_xy] = 0;

  2056.         // All coeffs are present

  2057.         memset(h->non_zero_count[mb_xy], 16, 48);

  2058.         h->cur_pic.mb_type[mb_xy] = mb_type;

  2059.         sl->last_qscale_diff = 0;

  2060.         return 0;

  2061.     }

  2062. 

  2063.     fill_decode_caches(h, sl, mb_type);

  2064. 

  2065.     if( IS_INTRA( mb_type ) ) {

  2066.         int i, pred_mode;

  2067.         if( IS_INTRA4x4( mb_type ) ) {

  2068.             if (dct8x8_allowed && get_cabac_noinline(&sl->cabac, &sl->cabac_state[399 + sl->neighbor_transform_size])) {

  2069.                 mb_type |= MB_TYPE_8x8DCT;

  2070.                 for( i = 0; i < 16; i+=4 ) {

  2071.                     int pred = pred_intra_mode(h, sl, i);

  2072.                     int mode = decode_cabac_mb_intra4x4_pred_mode(sl, pred);

  2073.                     fill_rectangle(&sl->intra4x4_pred_mode_cache[scan8[i]], 2, 2, 8, mode, 1);

  2074.                 }

  2075.             } else {

  2076.                 for( i = 0; i < 16; i++ ) {

  2077.                     int pred = pred_intra_mode(h, sl, i);

  2078.                     sl->intra4x4_pred_mode_cache[scan8[i]] = decode_cabac_mb_intra4x4_pred_mode(sl, pred);

  2079. 

  2080.                     ff_tlog(h->avctx, "i4x4 pred=%d mode=%d\n", pred,

  2081.                             sl->intra4x4_pred_mode_cache[scan8[i]]);

  2082.                 }

  2083.             }

  2084.             write_back_intra_pred_mode(h, sl);

  2085.             if (ff_h264_check_intra4x4_pred_mode(sl->intra4x4_pred_mode_cache, h->avctx,

  2086.                                                  sl->top_samples_available, sl->left_samples_available) < 0 )

  2087.                 return -1;

  2088.         } else {

  2089.             sl->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,

  2090.                                                                      sl->left_samples_available, sl->intra16x16_pred_mode, 0);

  2091.             if (sl->intra16x16_pred_mode < 0) return -1;

  2092.         }

  2093.         if(decode_chroma){

  2094.             h->chroma_pred_mode_table[mb_xy] =

  2095.             pred_mode                        = decode_cabac_mb_chroma_pre_mode(h, sl);

  2096. 

  2097.             pred_mode= ff_h264_check_intra_pred_mode(h->avctx, sl->top_samples_available,

  2098.                                                      sl->left_samples_available, pred_mode, 1 );

  2099.             if( pred_mode < 0 ) return -1;

  2100.             sl->chroma_pred_mode = pred_mode;

  2101.         } else {

  2102.             sl->chroma_pred_mode = DC_128_PRED8x8;

  2103.         }

  2104.     } else if( partition_count == 4 ) {

  2105.         int i, j, sub_partition_count[4], list, ref[2][4];

  2106. 

  2107.         if (sl->slice_type_nos == AV_PICTURE_TYPE_B ) {

  2108.             for( i = 0; i < 4; i++ ) {

  2109.                 sl->sub_mb_type[i] = decode_cabac_b_mb_sub_type(sl);

  2110.                 sub_partition_count[i] = ff_h264_b_sub_mb_type_info[sl->sub_mb_type[i]].partition_count;

  2111.                 sl->sub_mb_type[i]     = ff_h264_b_sub_mb_type_info[sl->sub_mb_type[i]].type;

  2112.             }

  2113.             if (IS_DIRECT(sl->sub_mb_type[0] | sl->sub_mb_type[1] |

  2114.                           sl->sub_mb_type[2] | sl->sub_mb_type[3])) {

  2115.                 ff_h264_pred_direct_motion(h, sl, &mb_type);

  2116.                 sl->ref_cache[0][scan8[4]] =

  2117.                 sl->ref_cache[1][scan8[4]] =

  2118.                 sl->ref_cache[0][scan8[12]] =

  2119.                 sl->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;

  2120.                     for( i = 0; i < 4; i++ )

  2121.                         fill_rectangle(&sl->direct_cache[scan8[4*i]], 2, 2, 8, (sl->sub_mb_type[i] >> 1) & 0xFF, 1);

  2122.             }

  2123.         } else {

  2124.             for( i = 0; i < 4; i++ ) {

  2125.                 sl->sub_mb_type[i] = decode_cabac_p_mb_sub_type(sl);

  2126.                 sub_partition_count[i] = ff_h264_p_sub_mb_type_info[sl->sub_mb_type[i]].partition_count;

  2127.                 sl->sub_mb_type[i]     = ff_h264_p_sub_mb_type_info[sl->sub_mb_type[i]].type;

  2128.             }

  2129.         }

  2130. 

  2131.         for( list = 0; list < sl->list_count; list++ ) {

  2132.                 for( i = 0; i < 4; i++ ) {

  2133.                     if(IS_DIRECT(sl->sub_mb_type[i])) continue;

  2134.                     if(IS_DIR(sl->sub_mb_type[i], 0, list)){

  2135.                         unsigned rc = sl->ref_count[list] << MB_MBAFF(sl);

  2136.                         if (rc > 1) {

  2137.                             ref[list][i] = decode_cabac_mb_ref(sl, list, 4 * i);

  2138.                             if (ref[list][i] >= rc) {

  2139.                                 av_log(h->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref[list][i], rc);

  2140.                                 return -1;

  2141.                             }

  2142.                         }else

  2143.                             ref[list][i] = 0;

  2144.                     } else {

  2145.                         ref[list][i] = -1;

  2146.                     }

  2147.                     sl->ref_cache[list][scan8[4 * i] + 1] =

  2148.                     sl->ref_cache[list][scan8[4 * i] + 8] = sl->ref_cache[list][scan8[4 * i] + 9] = ref[list][i];

  2149.                 }

  2150.         }

  2151. 

  2152.         if(dct8x8_allowed)

  2153.             dct8x8_allowed = get_dct8x8_allowed(h, sl);

  2154. 

  2155.         for (list = 0; list < sl->list_count; list++) {

  2156.             for(i=0; i<4; i++){

  2157.                 sl->ref_cache[list][scan8[4 * i]] = sl->ref_cache[list][scan8[4 * i] + 1];

  2158.                 if(IS_DIRECT(sl->sub_mb_type[i])){

  2159.                     fill_rectangle(sl->mvd_cache[list][scan8[4*i]], 2, 2, 8, 0, 2);

  2160.                     continue;

  2161.                 }

  2162. 

  2163.                 if(IS_DIR(sl->sub_mb_type[i], 0, list) && !IS_DIRECT(sl->sub_mb_type[i])){

  2164.                     const int sub_mb_type= sl->sub_mb_type[i];

  2165.                     const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;

  2166.                     for(j=0; j<sub_partition_count[i]; j++){

  2167.                         int mpx, mpy;

  2168.                         int mx, my;

  2169.                         const int index= 4*i + block_width*j;

  2170.                         int16_t (* mv_cache)[2] = &sl->mv_cache[list][ scan8[index] ];

  2171.                         uint8_t (* mvd_cache)[2]= &sl->mvd_cache[list][ scan8[index] ];

  2172.                         pred_motion(h, sl, index, block_width, list, sl->ref_cache[list][ scan8[index] ], &mx, &my);

  2173.                         DECODE_CABAC_MB_MVD(sl, list, index)

  2174.                         ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);

  2175. 

  2176.                         if(IS_SUB_8X8(sub_mb_type)){

  2177.                             mv_cache[ 1 ][0]=

  2178.                             mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;

  2179.                             mv_cache[ 1 ][1]=

  2180.                             mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;

  2181. 

  2182.                             mvd_cache[ 1 ][0]=

  2183.                             mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mpx;

  2184.                             mvd_cache[ 1 ][1]=

  2185.                             mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= mpy;

  2186.                         }else if(IS_SUB_8X4(sub_mb_type)){

  2187.                             mv_cache[ 1 ][0]= mx;

  2188.                             mv_cache[ 1 ][1]= my;

  2189. 

  2190.                             mvd_cache[ 1 ][0]=  mpx;

  2191.                             mvd_cache[ 1 ][1]= mpy;

  2192.                         }else if(IS_SUB_4X8(sub_mb_type)){

  2193.                             mv_cache[ 8 ][0]= mx;

  2194.                             mv_cache[ 8 ][1]= my;

  2195. 

  2196.                             mvd_cache[ 8 ][0]= mpx;

  2197.                             mvd_cache[ 8 ][1]= mpy;

  2198.                         }

  2199.                         mv_cache[ 0 ][0]= mx;

  2200.                         mv_cache[ 0 ][1]= my;

  2201. 

  2202.                         mvd_cache[ 0 ][0]= mpx;

  2203.                         mvd_cache[ 0 ][1]= mpy;

  2204.                     }

  2205.                 }else{

  2206.                     fill_rectangle(sl->mv_cache [list][ scan8[4*i] ], 2, 2, 8, 0, 4);

  2207.                     fill_rectangle(sl->mvd_cache[list][ scan8[4*i] ], 2, 2, 8, 0, 2);

  2208.                 }

  2209.             }

  2210.         }

  2211.     } else if( IS_DIRECT(mb_type) ) {

  2212.         ff_h264_pred_direct_motion(h, sl, &mb_type);

  2213.         fill_rectangle(sl->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 2);

  2214.         fill_rectangle(sl->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 2);

  2215.         dct8x8_allowed &= sps->direct_8x8_inference_flag;

  2216.     } else {

  2217.         int list, i;

  2218.         if(IS_16X16(mb_type)){

  2219.             for (list = 0; list < sl->list_count; list++) {

  2220.                 if(IS_DIR(mb_type, 0, list)){

  2221.                     int ref;

  2222.                     unsigned rc = sl->ref_count[list] << MB_MBAFF(sl);

  2223.                     if (rc > 1) {

  2224.                         ref= decode_cabac_mb_ref(sl, list, 0);

  2225.                         if (ref >= rc) {

  2226.                             av_log(h->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, rc);

  2227.                             return -1;

  2228.                         }

  2229.                     }else

  2230.                         ref=0;

  2231.                     fill_rectangle(&sl->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1);

  2232.                 }

  2233.             }

  2234.             for (list = 0; list < sl->list_count; list++) {

  2235.                 if(IS_DIR(mb_type, 0, list)){

  2236.                     int mx,my,mpx,mpy;

  2237.                     pred_motion(h, sl, 0, 4, list, sl->ref_cache[list][ scan8[0] ], &mx, &my);

  2238.                     DECODE_CABAC_MB_MVD(sl, list, 0)

  2239.                     ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);

  2240. 

  2241.                     fill_rectangle(sl->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack8to16(mpx,mpy), 2);

  2242.                     fill_rectangle(sl->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);

  2243.                 }

  2244.             }

  2245.         }

  2246.         else if(IS_16X8(mb_type)){

  2247.             for (list = 0; list < sl->list_count; list++) {

  2248.                     for(i=0; i<2; i++){

  2249.                         if(IS_DIR(mb_type, i, list)){

  2250.                             int ref;

  2251.                             unsigned rc = sl->ref_count[list] << MB_MBAFF(sl);

  2252.                             if (rc > 1) {

  2253.                                 ref= decode_cabac_mb_ref(sl, list, 8 * i);

  2254.                                 if (ref >= rc) {

  2255.                                     av_log(h->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, rc);

  2256.                                     return -1;

  2257.                                 }

  2258.                             }else

  2259.                                 ref=0;

  2260.                             fill_rectangle(&sl->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1);

  2261.                         }else

  2262.                             fill_rectangle(&sl->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1);

  2263.                     }

  2264.             }

  2265.             for (list = 0; list < sl->list_count; list++) {

  2266.                 for(i=0; i<2; i++){

  2267.                     if(IS_DIR(mb_type, i, list)){

  2268.                         int mx,my,mpx,mpy;

  2269.                         pred_16x8_motion(h, sl, 8*i, list, sl->ref_cache[list][scan8[0] + 16*i], &mx, &my);

  2270.                         DECODE_CABAC_MB_MVD(sl, list, 8*i)

  2271.                         ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);

  2272. 

  2273.                         fill_rectangle(sl->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack8to16(mpx,mpy), 2);

  2274.                         fill_rectangle(sl->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4);

  2275.                     }else{

  2276.                         fill_rectangle(sl->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 2);

  2277.                         fill_rectangle(sl->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4);

  2278.                     }

  2279.                 }

  2280.             }

  2281.         }else{

  2282.             av_assert2(IS_8X16(mb_type));

  2283.             for (list = 0; list < sl->list_count; list++) {

  2284.                     for(i=0; i<2; i++){

  2285.                         if(IS_DIR(mb_type, i, list)){ //FIXME optimize

  2286.                             int ref;

  2287.                             unsigned rc = sl->ref_count[list] << MB_MBAFF(sl);

  2288.                             if (rc > 1) {

  2289.                                 ref = decode_cabac_mb_ref(sl, list, 4 * i);

  2290.                                 if (ref >= rc) {

  2291.                                     av_log(h->avctx, AV_LOG_ERROR, "Reference %d >= %d\n", ref, rc);

  2292.                                     return -1;

  2293.                                 }

  2294.                             }else

  2295.                                 ref=0;

  2296.                             fill_rectangle(&sl->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1);

  2297.                         }else

  2298.                             fill_rectangle(&sl->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1);

  2299.                     }

  2300.             }

  2301.             for (list = 0; list < sl->list_count; list++) {

  2302.                 for(i=0; i<2; i++){

  2303.                     if(IS_DIR(mb_type, i, list)){

  2304.                         int mx,my,mpx,mpy;

  2305.                         pred_8x16_motion(h, sl, i*4, list, sl->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);

  2306.                         DECODE_CABAC_MB_MVD(sl, list, 4*i)

  2307. 

  2308.                         ff_tlog(h->avctx, "final mv:%d %d\n", mx, my);

  2309.                         fill_rectangle(sl->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack8to16(mpx,mpy), 2);

  2310.                         fill_rectangle(sl->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4);

  2311.                     }else{

  2312.                         fill_rectangle(sl->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 2);

  2313.                         fill_rectangle(sl->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4);

  2314.                     }

  2315.                 }

  2316.             }

  2317.         }

  2318.     }

  2319. 

  2320.    if( IS_INTER( mb_type ) ) {

  2321.         h->chroma_pred_mode_table[mb_xy] = 0;

  2322.         write_back_motion(h, sl, mb_type);

  2323.    }

  2324. 

  2325.     if( !IS_INTRA16x16( mb_type ) ) {

  2326.         cbp  = decode_cabac_mb_cbp_luma(sl);

  2327.         if(decode_chroma)

  2328.             cbp |= decode_cabac_mb_cbp_chroma(sl) << 4;

  2329.     } else {

  2330.         if (!decode_chroma && cbp>15) {

  2331.             av_log(h->avctx, AV_LOG_ERROR, "gray chroma\n");

  2332.             return AVERROR_INVALIDDATA;

  2333.         }

  2334.     }

  2335. 

  2336.     h->cbp_table[mb_xy] = sl->cbp = cbp;

  2337. 

  2338.     if( dct8x8_allowed && (cbp&15) && !IS_INTRA( mb_type ) ) {

  2339.         mb_type |= MB_TYPE_8x8DCT * get_cabac_noinline(&sl->cabac, &sl->cabac_state[399 + sl->neighbor_transform_size]);

  2340.     }

  2341. 

  2342.     /* It would be better to do this in fill_decode_caches, but we don't know

  2343.      * the transform mode of the current macroblock there. */

  2344.     if (CHROMA444(h) && IS_8x8DCT(mb_type)){

  2345.         int i;

  2346.         uint8_t *nnz_cache = sl->non_zero_count_cache;

  2347.         if (h->x264_build < 151U) {

  2348.             for (i = 0; i < 2; i++){

  2349.                 if (sl->left_type[LEFT(i)] && !IS_8x8DCT(sl->left_type[LEFT(i)])) {

  2350.                     nnz_cache[3+8* 1 + 2*8*i]=

  2351.                     nnz_cache[3+8* 2 + 2*8*i]=

  2352.                     nnz_cache[3+8* 6 + 2*8*i]=

  2353.                     nnz_cache[3+8* 7 + 2*8*i]=

  2354.                     nnz_cache[3+8*11 + 2*8*i]=

  2355.                     nnz_cache[3+8*12 + 2*8*i]= IS_INTRA(mb_type) ? 64 : 0;

  2356.                 }

  2357.             }

  2358.             if (sl->top_type && !IS_8x8DCT(sl->top_type)){

  2359.                 uint32_t top_empty = !IS_INTRA(mb_type) ? 0 : 0x40404040;

  2360.                 AV_WN32A(&nnz_cache[4+8* 0], top_empty);

  2361.                 AV_WN32A(&nnz_cache[4+8* 5], top_empty);

  2362.                 AV_WN32A(&nnz_cache[4+8*10], top_empty);

  2363.             }

  2364.         } else {

  2365.             for (i = 0; i < 2; i++){

  2366.                 if (sl->left_type[LEFT(i)] && !IS_8x8DCT(sl->left_type[LEFT(i)])) {

  2367.                     nnz_cache[3+8* 1 + 2*8*i]=

  2368.                     nnz_cache[3+8* 2 + 2*8*i]=

  2369.                     nnz_cache[3+8* 6 + 2*8*i]=

  2370.                     nnz_cache[3+8* 7 + 2*8*i]=

  2371.                     nnz_cache[3+8*11 + 2*8*i]=

  2372.                     nnz_cache[3+8*12 + 2*8*i]= !IS_INTRA_PCM(sl->left_type[LEFT(i)]) ? 0 : 64;

  2373.                 }

  2374.             }

  2375.             if (sl->top_type && !IS_8x8DCT(sl->top_type)){

  2376.                 uint32_t top_empty = !IS_INTRA_PCM(sl->top_type) ? 0 : 0x40404040;

  2377.                 AV_WN32A(&nnz_cache[4+8* 0], top_empty);

  2378.                 AV_WN32A(&nnz_cache[4+8* 5], top_empty);

  2379.                 AV_WN32A(&nnz_cache[4+8*10], top_empty);

  2380.             }

  2381.         }

  2382.     }

  2383.     h->cur_pic.mb_type[mb_xy] = mb_type;

  2384. 

  2385.     if( cbp || IS_INTRA16x16( mb_type ) ) {

  2386.         const uint8_t *scan, *scan8x8;

  2387.         const uint32_t *qmul;

  2388. 

  2389.         // decode_cabac_mb_dqp

  2390.         if(get_cabac_noinline( &sl->cabac, &sl->cabac_state[60 + (sl->last_qscale_diff != 0)])){

  2391.             int val = 1;

  2392.             int ctx= 2;

  2393.             const int max_qp = 51 + 6*(sps->bit_depth_luma-8);

  2394. 

  2395.             while( get_cabac_noinline( &sl->cabac, &sl->cabac_state[60 + ctx] ) ) {

  2396.                 ctx= 3;

  2397.                 val++;

  2398.                 if(val > 2*max_qp){ //prevent infinite loop

  2399.                     av_log(h->avctx, AV_LOG_ERROR, "cabac decode of qscale diff failed at %d %d\n", sl->mb_x, sl->mb_y);

  2400.                     return -1;

  2401.                 }

  2402.             }

  2403. 

  2404.             if( val&0x01 )

  2405.                 val=   (val + 1)>>1 ;

  2406.             else

  2407.                 val= -((val + 1)>>1);

  2408.             sl->last_qscale_diff = val;

  2409.             sl->qscale += val;

  2410.             if (((unsigned)sl->qscale) > max_qp){

  2411.                 if (sl->qscale < 0) sl->qscale += max_qp + 1;

  2412.                 else                sl->qscale -= max_qp + 1;

  2413.             }

  2414.             sl->chroma_qp[0] = get_chroma_qp(h->ps.pps, 0, sl->qscale);

  2415.             sl->chroma_qp[1] = get_chroma_qp(h->ps.pps, 1, sl->qscale);

  2416.         }else

  2417.             sl->last_qscale_diff=0;

  2418. 

  2419.         if(IS_INTERLACED(mb_type)){

  2420.             scan8x8 = sl->qscale ? h->field_scan8x8 : h->field_scan8x8_q0;

  2421.             scan    = sl->qscale ? h->field_scan : h->field_scan_q0;

  2422.         }else{

  2423.             scan8x8 = sl->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0;

  2424.             scan    = sl->qscale ? h->zigzag_scan : h->zigzag_scan_q0;

  2425.         }

  2426. 

  2427.         decode_cabac_luma_residual(h, sl, scan, scan8x8, pixel_shift, mb_type, cbp, 0);

  2428.         if (CHROMA444(h)) {

  2429.             decode_cabac_luma_residual(h, sl, scan, scan8x8, pixel_shift, mb_type, cbp, 1);

  2430.             decode_cabac_luma_residual(h, sl, scan, scan8x8, pixel_shift, mb_type, cbp, 2);

  2431.         } else if (CHROMA422(h)) {

  2432.             if( cbp&0x30 ){

  2433.                 int c;

  2434.                 for (c = 0; c < 2; c++)

  2435.                     decode_cabac_residual_dc_422(h, sl, sl->mb + ((256 + 16*16*c) << pixel_shift), 3,

  2436.                                                  CHROMA_DC_BLOCK_INDEX + c,

  2437.                                                  ff_h264_chroma422_dc_scan, 8);

  2438.             }

  2439. 

  2440.             if( cbp&0x20 ) {

  2441.                 int c, i, i8x8;

  2442.                 for( c = 0; c < 2; c++ ) {

  2443.                     int16_t *mb = sl->mb + (16*(16 + 16*c) << pixel_shift);

  2444.                     qmul = h->ps.pps->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][sl->chroma_qp[c]];

  2445.                     for (i8x8 = 0; i8x8 < 2; i8x8++) {

  2446.                         for (i = 0; i < 4; i++) {

  2447.                             const int index = 16 + 16 * c + 8*i8x8 + i;

  2448.                             decode_cabac_residual_nondc(h, sl, mb, 4, index, scan + 1, qmul, 15);

  2449.                             mb += 16<<pixel_shift;

  2450.                         }

  2451.                     }

  2452.                 }

  2453.             } else {

  2454.                 fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);

  2455.                 fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);

  2456.             }

  2457.         } else /* yuv420 */ {

  2458.             if( cbp&0x30 ){

  2459.                 int c;

  2460.                 for (c = 0; c < 2; c++)

  2461.                     decode_cabac_residual_dc(h, sl, sl->mb + ((256 + 16 * 16 * c) << pixel_shift),

  2462.                                              3, CHROMA_DC_BLOCK_INDEX + c, ff_h264_chroma_dc_scan, 4);

  2463.             }

  2464. 

  2465.             if( cbp&0x20 ) {

  2466.                 int c, i;

  2467.                 for( c = 0; c < 2; c++ ) {

  2468.                     qmul = h->ps.pps->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][sl->chroma_qp[c]];

  2469.                     for( i = 0; i < 4; i++ ) {

  2470.                         const int index = 16 + 16 * c + i;

  2471.                         decode_cabac_residual_nondc(h, sl, sl->mb + (16*index << pixel_shift), 4, index, scan + 1, qmul, 15);

  2472.                     }

  2473.                 }

  2474.             } else {

  2475.                 fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);

  2476.                 fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);

  2477.             }

  2478.         }

  2479.     } else {

  2480.         fill_rectangle(&sl->non_zero_count_cache[scan8[ 0]], 4, 4, 8, 0, 1);

  2481.         fill_rectangle(&sl->non_zero_count_cache[scan8[16]], 4, 4, 8, 0, 1);

  2482.         fill_rectangle(&sl->non_zero_count_cache[scan8[32]], 4, 4, 8, 0, 1);

  2483.         sl->last_qscale_diff = 0;

  2484.     }

  2485. 

  2486.     h->cur_pic.qscale_table[mb_xy] = sl->qscale;

  2487.     write_back_non_zero_count(h, sl);

  2488. 

  2489.     return 0;

  2490. }