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  1. /*
  2.  * MPEG1/2 tables
  3.  * copyright (c) 2000,2001 Fabrice Bellard
  4.  * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. /**
  24.  * @file
  25.  * MPEG1/2 tables.
  26.  */
  27.  
  28. #include "mpeg12data.h"
  29.  
  30. const uint16_t ff_mpeg1_default_intra_matrix[256] = {
  31.         8, 16, 19, 22, 26, 27, 29, 34,
  32.         16, 16, 22, 24, 27, 29, 34, 37,
  33.         19, 22, 26, 27, 29, 34, 34, 38,
  34.         22, 22, 26, 27, 29, 34, 37, 40,
  35.         22, 26, 27, 29, 32, 35, 40, 48,
  36.         26, 27, 29, 32, 35, 40, 48, 58,
  37.         26, 27, 29, 34, 38, 46, 56, 69,
  38.         27, 29, 35, 38, 46, 56, 69, 83
  39. };
  40.  
  41. const uint16_t ff_mpeg1_default_non_intra_matrix[64] = {
  42.     16, 16, 16, 16, 16, 16, 16, 16,
  43.     16, 16, 16, 16, 16, 16, 16, 16,
  44.     16, 16, 16, 16, 16, 16, 16, 16,
  45.     16, 16, 16, 16, 16, 16, 16, 16,
  46.     16, 16, 16, 16, 16, 16, 16, 16,
  47.     16, 16, 16, 16, 16, 16, 16, 16,
  48.     16, 16, 16, 16, 16, 16, 16, 16,
  49.     16, 16, 16, 16, 16, 16, 16, 16,
  50. };
  51.  
  52. const uint16_t ff_mpeg12_vlc_dc_lum_code[12] = {
  53.     0x4, 0x0, 0x1, 0x5, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe, 0x1ff,
  54. };
  55. const unsigned char ff_mpeg12_vlc_dc_lum_bits[12] = {
  56.     3, 2, 2, 3, 3, 4, 5, 6, 7, 8, 9, 9,
  57. };
  58.  
  59. const uint16_t ff_mpeg12_vlc_dc_chroma_code[12] = {
  60.     0x0, 0x1, 0x2, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe, 0x3fe, 0x3ff,
  61. };
  62. const unsigned char ff_mpeg12_vlc_dc_chroma_bits[12] = {
  63.     2, 2, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10,
  64. };
  65.  
  66. static const uint16_t mpeg1_vlc[113][2] = {
  67.  { 0x3, 2 }, { 0x4, 4 }, { 0x5, 5 }, { 0x6, 7 },
  68.  { 0x26, 8 }, { 0x21, 8 }, { 0xa, 10 }, { 0x1d, 12 },
  69.  { 0x18, 12 }, { 0x13, 12 }, { 0x10, 12 }, { 0x1a, 13 },
  70.  { 0x19, 13 }, { 0x18, 13 }, { 0x17, 13 }, { 0x1f, 14 },
  71.  { 0x1e, 14 }, { 0x1d, 14 }, { 0x1c, 14 }, { 0x1b, 14 },
  72.  { 0x1a, 14 }, { 0x19, 14 }, { 0x18, 14 }, { 0x17, 14 },
  73.  { 0x16, 14 }, { 0x15, 14 }, { 0x14, 14 }, { 0x13, 14 },
  74.  { 0x12, 14 }, { 0x11, 14 }, { 0x10, 14 }, { 0x18, 15 },
  75.  { 0x17, 15 }, { 0x16, 15 }, { 0x15, 15 }, { 0x14, 15 },
  76.  { 0x13, 15 }, { 0x12, 15 }, { 0x11, 15 }, { 0x10, 15 },
  77.  { 0x3, 3 }, { 0x6, 6 }, { 0x25, 8 }, { 0xc, 10 },
  78.  { 0x1b, 12 }, { 0x16, 13 }, { 0x15, 13 }, { 0x1f, 15 },
  79.  { 0x1e, 15 }, { 0x1d, 15 }, { 0x1c, 15 }, { 0x1b, 15 },
  80.  { 0x1a, 15 }, { 0x19, 15 }, { 0x13, 16 }, { 0x12, 16 },
  81.  { 0x11, 16 }, { 0x10, 16 }, { 0x5, 4 }, { 0x4, 7 },
  82.  { 0xb, 10 }, { 0x14, 12 }, { 0x14, 13 }, { 0x7, 5 },
  83.  { 0x24, 8 }, { 0x1c, 12 }, { 0x13, 13 }, { 0x6, 5 },
  84.  { 0xf, 10 }, { 0x12, 12 }, { 0x7, 6 }, { 0x9, 10 },
  85.  { 0x12, 13 }, { 0x5, 6 }, { 0x1e, 12 }, { 0x14, 16 },
  86.  { 0x4, 6 }, { 0x15, 12 }, { 0x7, 7 }, { 0x11, 12 },
  87.  { 0x5, 7 }, { 0x11, 13 }, { 0x27, 8 }, { 0x10, 13 },
  88.  { 0x23, 8 }, { 0x1a, 16 }, { 0x22, 8 }, { 0x19, 16 },
  89.  { 0x20, 8 }, { 0x18, 16 }, { 0xe, 10 }, { 0x17, 16 },
  90.  { 0xd, 10 }, { 0x16, 16 }, { 0x8, 10 }, { 0x15, 16 },
  91.  { 0x1f, 12 }, { 0x1a, 12 }, { 0x19, 12 }, { 0x17, 12 },
  92.  { 0x16, 12 }, { 0x1f, 13 }, { 0x1e, 13 }, { 0x1d, 13 },
  93.  { 0x1c, 13 }, { 0x1b, 13 }, { 0x1f, 16 }, { 0x1e, 16 },
  94.  { 0x1d, 16 }, { 0x1c, 16 }, { 0x1b, 16 },
  95.  { 0x1, 6 }, /* escape */
  96.  { 0x2, 2 }, /* EOB */
  97. };
  98.  
  99. static const uint16_t mpeg2_vlc[113][2] = {
  100.   {0x02, 2}, {0x06, 3}, {0x07, 4}, {0x1c, 5},
  101.   {0x1d, 5}, {0x05, 6}, {0x04, 6}, {0x7b, 7},
  102.   {0x7c, 7}, {0x23, 8}, {0x22, 8}, {0xfa, 8},
  103.   {0xfb, 8}, {0xfe, 8}, {0xff, 8}, {0x1f,14},
  104.   {0x1e,14}, {0x1d,14}, {0x1c,14}, {0x1b,14},
  105.   {0x1a,14}, {0x19,14}, {0x18,14}, {0x17,14},
  106.   {0x16,14}, {0x15,14}, {0x14,14}, {0x13,14},
  107.   {0x12,14}, {0x11,14}, {0x10,14}, {0x18,15},
  108.   {0x17,15}, {0x16,15}, {0x15,15}, {0x14,15},
  109.   {0x13,15}, {0x12,15}, {0x11,15}, {0x10,15},
  110.   {0x02, 3}, {0x06, 5}, {0x79, 7}, {0x27, 8},
  111.   {0x20, 8}, {0x16,13}, {0x15,13}, {0x1f,15},
  112.   {0x1e,15}, {0x1d,15}, {0x1c,15}, {0x1b,15},
  113.   {0x1a,15}, {0x19,15}, {0x13,16}, {0x12,16},
  114.   {0x11,16}, {0x10,16}, {0x05, 5}, {0x07, 7},
  115.   {0xfc, 8}, {0x0c,10}, {0x14,13}, {0x07, 5},
  116.   {0x26, 8}, {0x1c,12}, {0x13,13}, {0x06, 6},
  117.   {0xfd, 8}, {0x12,12}, {0x07, 6}, {0x04, 9},
  118.   {0x12,13}, {0x06, 7}, {0x1e,12}, {0x14,16},
  119.   {0x04, 7}, {0x15,12}, {0x05, 7}, {0x11,12},
  120.   {0x78, 7}, {0x11,13}, {0x7a, 7}, {0x10,13},
  121.   {0x21, 8}, {0x1a,16}, {0x25, 8}, {0x19,16},
  122.   {0x24, 8}, {0x18,16}, {0x05, 9}, {0x17,16},
  123.   {0x07, 9}, {0x16,16}, {0x0d,10}, {0x15,16},
  124.   {0x1f,12}, {0x1a,12}, {0x19,12}, {0x17,12},
  125.   {0x16,12}, {0x1f,13}, {0x1e,13}, {0x1d,13},
  126.   {0x1c,13}, {0x1b,13}, {0x1f,16}, {0x1e,16},
  127.   {0x1d,16}, {0x1c,16}, {0x1b,16},
  128.   {0x01,6}, /* escape */
  129.   {0x06,4}, /* EOB */
  130. };
  131.  
  132. static const int8_t mpeg1_level[111] = {
  133.   1,  2,  3,  4,  5,  6,  7,  8,
  134.   9, 10, 11, 12, 13, 14, 15, 16,
  135.  17, 18, 19, 20, 21, 22, 23, 24,
  136.  25, 26, 27, 28, 29, 30, 31, 32,
  137.  33, 34, 35, 36, 37, 38, 39, 40,
  138.   1,  2,  3,  4,  5,  6,  7,  8,
  139.   9, 10, 11, 12, 13, 14, 15, 16,
  140.  17, 18,  1,  2,  3,  4,  5,  1,
  141.   2,  3,  4,  1,  2,  3,  1,  2,
  142.   3,  1,  2,  3,  1,  2,  1,  2,
  143.   1,  2,  1,  2,  1,  2,  1,  2,
  144.   1,  2,  1,  2,  1,  2,  1,  2,
  145.   1,  1,  1,  1,  1,  1,  1,  1,
  146.   1,  1,  1,  1,  1,  1,  1,
  147. };
  148.  
  149. static const int8_t mpeg1_run[111] = {
  150.   0,  0,  0,  0,  0,  0,  0,  0,
  151.   0,  0,  0,  0,  0,  0,  0,  0,
  152.   0,  0,  0,  0,  0,  0,  0,  0,
  153.   0,  0,  0,  0,  0,  0,  0,  0,
  154.   0,  0,  0,  0,  0,  0,  0,  0,
  155.   1,  1,  1,  1,  1,  1,  1,  1,
  156.   1,  1,  1,  1,  1,  1,  1,  1,
  157.   1,  1,  2,  2,  2,  2,  2,  3,
  158.   3,  3,  3,  4,  4,  4,  5,  5,
  159.   5,  6,  6,  6,  7,  7,  8,  8,
  160.   9,  9, 10, 10, 11, 11, 12, 12,
  161.  13, 13, 14, 14, 15, 15, 16, 16,
  162.  17, 18, 19, 20, 21, 22, 23, 24,
  163.  25, 26, 27, 28, 29, 30, 31,
  164. };
  165.  
  166. RLTable ff_rl_mpeg1 = {
  167.     111,
  168.     111,
  169.     mpeg1_vlc,
  170.     mpeg1_run,
  171.     mpeg1_level,
  172. };
  173.  
  174. RLTable ff_rl_mpeg2 = {
  175.     111,
  176.     111,
  177.     mpeg2_vlc,
  178.     mpeg1_run,
  179.     mpeg1_level,
  180. };
  181.  
  182. const uint8_t ff_mpeg12_mbAddrIncrTable[36][2] = {
  183.     {0x1, 1},
  184.     {0x3, 3},
  185.     {0x2, 3},
  186.     {0x3, 4},
  187.     {0x2, 4},
  188.     {0x3, 5},
  189.     {0x2, 5},
  190.     {0x7, 7},
  191.     {0x6, 7},
  192.     {0xb, 8},
  193.     {0xa, 8},
  194.     {0x9, 8},
  195.     {0x8, 8},
  196.     {0x7, 8},
  197.     {0x6, 8},
  198.     {0x17, 10},
  199.     {0x16, 10},
  200.     {0x15, 10},
  201.     {0x14, 10},
  202.     {0x13, 10},
  203.     {0x12, 10},
  204.     {0x23, 11},
  205.     {0x22, 11},
  206.     {0x21, 11},
  207.     {0x20, 11},
  208.     {0x1f, 11},
  209.     {0x1e, 11},
  210.     {0x1d, 11},
  211.     {0x1c, 11},
  212.     {0x1b, 11},
  213.     {0x1a, 11},
  214.     {0x19, 11},
  215.     {0x18, 11},
  216.     {0x8, 11}, /* escape */
  217.     {0xf, 11}, /* stuffing */
  218.     {0x0, 8}, /* end (and 15 more 0 bits should follow) */
  219. };
  220.  
  221. const uint8_t ff_mpeg12_mbPatTable[64][2] = {
  222.     {0x1, 9},
  223.     {0xb, 5},
  224.     {0x9, 5},
  225.     {0xd, 6},
  226.     {0xd, 4},
  227.     {0x17, 7},
  228.     {0x13, 7},
  229.     {0x1f, 8},
  230.     {0xc, 4},
  231.     {0x16, 7},
  232.     {0x12, 7},
  233.     {0x1e, 8},
  234.     {0x13, 5},
  235.     {0x1b, 8},
  236.     {0x17, 8},
  237.     {0x13, 8},
  238.     {0xb, 4},
  239.     {0x15, 7},
  240.     {0x11, 7},
  241.     {0x1d, 8},
  242.     {0x11, 5},
  243.     {0x19, 8},
  244.     {0x15, 8},
  245.     {0x11, 8},
  246.     {0xf, 6},
  247.     {0xf, 8},
  248.     {0xd, 8},
  249.     {0x3, 9},
  250.     {0xf, 5},
  251.     {0xb, 8},
  252.     {0x7, 8},
  253.     {0x7, 9},
  254.     {0xa, 4},
  255.     {0x14, 7},
  256.     {0x10, 7},
  257.     {0x1c, 8},
  258.     {0xe, 6},
  259.     {0xe, 8},
  260.     {0xc, 8},
  261.     {0x2, 9},
  262.     {0x10, 5},
  263.     {0x18, 8},
  264.     {0x14, 8},
  265.     {0x10, 8},
  266.     {0xe, 5},
  267.     {0xa, 8},
  268.     {0x6, 8},
  269.     {0x6, 9},
  270.     {0x12, 5},
  271.     {0x1a, 8},
  272.     {0x16, 8},
  273.     {0x12, 8},
  274.     {0xd, 5},
  275.     {0x9, 8},
  276.     {0x5, 8},
  277.     {0x5, 9},
  278.     {0xc, 5},
  279.     {0x8, 8},
  280.     {0x4, 8},
  281.     {0x4, 9},
  282.     {0x7, 3},
  283.     {0xa, 5},
  284.     {0x8, 5},
  285.     {0xc, 6}
  286. };
  287.  
  288. const uint8_t ff_mpeg12_mbMotionVectorTable[17][2] = {
  289. { 0x1, 1 },
  290. { 0x1, 2 },
  291. { 0x1, 3 },
  292. { 0x1, 4 },
  293. { 0x3, 6 },
  294. { 0x5, 7 },
  295. { 0x4, 7 },
  296. { 0x3, 7 },
  297. { 0xb, 9 },
  298. { 0xa, 9 },
  299. { 0x9, 9 },
  300. { 0x11, 10 },
  301. { 0x10, 10 },
  302. { 0xf, 10 },
  303. { 0xe, 10 },
  304. { 0xd, 10 },
  305. { 0xc, 10 },
  306. };
  307.  
  308. const AVRational ff_mpeg12_frame_rate_tab[16] = {
  309.     {    0,    0},
  310.     {24000, 1001},
  311.     {   24,    1},
  312.     {   25,    1},
  313.     {30000, 1001},
  314.     {   30,    1},
  315.     {   50,    1},
  316.     {60000, 1001},
  317.     {   60,    1},
  318.   // Xing's 15fps: (9)
  319.     {   15,    1},
  320.   // libmpeg3's "Unofficial economy rates": (10-13)
  321.     {    5,    1},
  322.     {   10,    1},
  323.     {   12,    1},
  324.     {   15,    1},
  325.     {    0,    0},
  326. };
  327.  
  328. const AVRational ff_mpeg2_frame_rate_tab[] = {
  329.     {      1,     1},
  330.     {      2,     1},
  331.     {      3,     1},
  332.     {      4,     1},
  333.     {      5,     1},
  334.     {      6,     1},
  335.     {      8,     1},
  336.     {      9,     1},
  337.     {     10,     1},
  338.     {     12,     1},
  339.     {     15,     1},
  340.     {     16,     1},
  341.     {     18,     1},
  342.     {     20,     1},
  343.     {     24,     1},
  344.     {     25,     1},
  345.     {     30,     1},
  346.     {     32,     1},
  347.     {     36,     1},
  348.     {     40,     1},
  349.     {     45,     1},
  350.     {     48,     1},
  351.     {     50,     1},
  352.     {     60,     1},
  353.     {     72,     1},
  354.     {     75,     1},
  355.     {     80,     1},
  356.     {     90,     1},
  357.     {     96,     1},
  358.     {    100,     1},
  359.     {    120,     1},
  360.     {    150,     1},
  361.     {    180,     1},
  362.     {    200,     1},
  363.     {    240,     1},
  364.     {    750,  1001},
  365.     {    800,  1001},
  366.     {    960,  1001},
  367.     {   1000,  1001},
  368.     {   1200,  1001},
  369.     {   1250,  1001},
  370.     {   1500,  1001},
  371.     {   1600,  1001},
  372.     {   1875,  1001},
  373.     {   2000,  1001},
  374.     {   2400,  1001},
  375.     {   2500,  1001},
  376.     {   3000,  1001},
  377.     {   3750,  1001},
  378.     {   4000,  1001},
  379.     {   4800,  1001},
  380.     {   5000,  1001},
  381.     {   6000,  1001},
  382.     {   7500,  1001},
  383.     {   8000,  1001},
  384.     {  10000,  1001},
  385.     {  12000,  1001},
  386.     {  15000,  1001},
  387.     {  20000,  1001},
  388.     {  24000,  1001},
  389.     {  30000,  1001},
  390.     {  60000,  1001},
  391.     {      0,     0},
  392. };
  393.  
  394. const float ff_mpeg1_aspect[16]={
  395.     0.0000,
  396.     1.0000,
  397.     0.6735,
  398.     0.7031,
  399.  
  400.     0.7615,
  401.     0.8055,
  402.     0.8437,
  403.     0.8935,
  404.  
  405.     0.9157,
  406.     0.9815,
  407.     1.0255,
  408.     1.0695,
  409.  
  410.     1.0950,
  411.     1.1575,
  412.     1.2015,
  413. };
  414.  
  415. const AVRational ff_mpeg2_aspect[16]={
  416.     {0,1},
  417.     {1,1},
  418.     {4,3},
  419.     {16,9},
  420.     {221,100},
  421.     {0,1},
  422.     {0,1},
  423.     {0,1},
  424.     {0,1},
  425.     {0,1},
  426.     {0,1},
  427.     {0,1},
  428.     {0,1},
  429.     {0,1},
  430.     {0,1},
  431.     {0,1},
  432. };
  433.