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FFmpeg/libavcodec/mpeg12data.h

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  1. /*

  2.  * MPEG1 codec / MPEG2 decoder

  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 mpeg12data.h

  25.  * MPEG1/2 tables.

  26.  */

  27. 

  28. #include <stdint.h>

  29. #include "mpegvideo.h"

  30. 

  31. const uint16_t ff_mpeg1_default_intra_matrix[64] = {

  32.         8, 16, 19, 22, 26, 27, 29, 34,

  33.         16, 16, 22, 24, 27, 29, 34, 37,

  34.         19, 22, 26, 27, 29, 34, 34, 38,

  35.         22, 22, 26, 27, 29, 34, 37, 40,

  36.         22, 26, 27, 29, 32, 35, 40, 48,

  37.         26, 27, 29, 32, 35, 40, 48, 58,

  38.         26, 27, 29, 34, 38, 46, 56, 69,

  39.         27, 29, 35, 38, 46, 56, 69, 83

  40. };

  41. 

  42. const uint16_t ff_mpeg1_default_non_intra_matrix[64] = {

  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.     16, 16, 16, 16, 16, 16, 16, 16,

  51. };

  52. 

  53. static const uint16_t vlc_dc_lum_code[12] = {

  54.     0x4, 0x0, 0x1, 0x5, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe, 0x1ff,

  55. };

  56. static const unsigned char vlc_dc_lum_bits[12] = {

  57.     3, 2, 2, 3, 3, 4, 5, 6, 7, 8, 9, 9,

  58. };

  59. 

  60. static const uint16_t vlc_dc_chroma_code[12] = {

  61.     0x0, 0x1, 0x2, 0x6, 0xe, 0x1e, 0x3e, 0x7e, 0xfe, 0x1fe, 0x3fe, 0x3ff,

  62. };

  63. static const unsigned char vlc_dc_chroma_bits[12] = {

  64.     2, 2, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10,

  65. };

  66. 

  67. static const uint16_t mpeg1_vlc[113][2] = {

  68.  { 0x3, 2 }, { 0x4, 4 }, { 0x5, 5 }, { 0x6, 7 },

  69.  { 0x26, 8 }, { 0x21, 8 }, { 0xa, 10 }, { 0x1d, 12 },

  70.  { 0x18, 12 }, { 0x13, 12 }, { 0x10, 12 }, { 0x1a, 13 },

  71.  { 0x19, 13 }, { 0x18, 13 }, { 0x17, 13 }, { 0x1f, 14 },

  72.  { 0x1e, 14 }, { 0x1d, 14 }, { 0x1c, 14 }, { 0x1b, 14 },

  73.  { 0x1a, 14 }, { 0x19, 14 }, { 0x18, 14 }, { 0x17, 14 },

  74.  { 0x16, 14 }, { 0x15, 14 }, { 0x14, 14 }, { 0x13, 14 },

  75.  { 0x12, 14 }, { 0x11, 14 }, { 0x10, 14 }, { 0x18, 15 },

  76.  { 0x17, 15 }, { 0x16, 15 }, { 0x15, 15 }, { 0x14, 15 },

  77.  { 0x13, 15 }, { 0x12, 15 }, { 0x11, 15 }, { 0x10, 15 },

  78.  { 0x3, 3 }, { 0x6, 6 }, { 0x25, 8 }, { 0xc, 10 },

  79.  { 0x1b, 12 }, { 0x16, 13 }, { 0x15, 13 }, { 0x1f, 15 },

  80.  { 0x1e, 15 }, { 0x1d, 15 }, { 0x1c, 15 }, { 0x1b, 15 },

  81.  { 0x1a, 15 }, { 0x19, 15 }, { 0x13, 16 }, { 0x12, 16 },

  82.  { 0x11, 16 }, { 0x10, 16 }, { 0x5, 4 }, { 0x4, 7 },

  83.  { 0xb, 10 }, { 0x14, 12 }, { 0x14, 13 }, { 0x7, 5 },

  84.  { 0x24, 8 }, { 0x1c, 12 }, { 0x13, 13 }, { 0x6, 5 },

  85.  { 0xf, 10 }, { 0x12, 12 }, { 0x7, 6 }, { 0x9, 10 },

  86.  { 0x12, 13 }, { 0x5, 6 }, { 0x1e, 12 }, { 0x14, 16 },

  87.  { 0x4, 6 }, { 0x15, 12 }, { 0x7, 7 }, { 0x11, 12 },

  88.  { 0x5, 7 }, { 0x11, 13 }, { 0x27, 8 }, { 0x10, 13 },

  89.  { 0x23, 8 }, { 0x1a, 16 }, { 0x22, 8 }, { 0x19, 16 },

  90.  { 0x20, 8 }, { 0x18, 16 }, { 0xe, 10 }, { 0x17, 16 },

  91.  { 0xd, 10 }, { 0x16, 16 }, { 0x8, 10 }, { 0x15, 16 },

  92.  { 0x1f, 12 }, { 0x1a, 12 }, { 0x19, 12 }, { 0x17, 12 },

  93.  { 0x16, 12 }, { 0x1f, 13 }, { 0x1e, 13 }, { 0x1d, 13 },

  94.  { 0x1c, 13 }, { 0x1b, 13 }, { 0x1f, 16 }, { 0x1e, 16 },

  95.  { 0x1d, 16 }, { 0x1c, 16 }, { 0x1b, 16 },

  96.  { 0x1, 6 }, /* escape */

  97.  { 0x2, 2 }, /* EOB */

  98. };

  99. 

  100. static const uint16_t mpeg2_vlc[113][2] = {

  101.   {0x02, 2}, {0x06, 3}, {0x07, 4}, {0x1c, 5},

  102.   {0x1d, 5}, {0x05, 6}, {0x04, 6}, {0x7b, 7},

  103.   {0x7c, 7}, {0x23, 8}, {0x22, 8}, {0xfa, 8},

  104.   {0xfb, 8}, {0xfe, 8}, {0xff, 8}, {0x1f,14},

  105.   {0x1e,14}, {0x1d,14}, {0x1c,14}, {0x1b,14},

  106.   {0x1a,14}, {0x19,14}, {0x18,14}, {0x17,14},

  107.   {0x16,14}, {0x15,14}, {0x14,14}, {0x13,14},

  108.   {0x12,14}, {0x11,14}, {0x10,14}, {0x18,15},

  109.   {0x17,15}, {0x16,15}, {0x15,15}, {0x14,15},

  110.   {0x13,15}, {0x12,15}, {0x11,15}, {0x10,15},

  111.   {0x02, 3}, {0x06, 5}, {0x79, 7}, {0x27, 8},

  112.   {0x20, 8}, {0x16,13}, {0x15,13}, {0x1f,15},

  113.   {0x1e,15}, {0x1d,15}, {0x1c,15}, {0x1b,15},

  114.   {0x1a,15}, {0x19,15}, {0x13,16}, {0x12,16},

  115.   {0x11,16}, {0x10,16}, {0x05, 5}, {0x07, 7},

  116.   {0xfc, 8}, {0x0c,10}, {0x14,13}, {0x07, 5},

  117.   {0x26, 8}, {0x1c,12}, {0x13,13}, {0x06, 6},

  118.   {0xfd, 8}, {0x12,12}, {0x07, 6}, {0x04, 9},

  119.   {0x12,13}, {0x06, 7}, {0x1e,12}, {0x14,16},

  120.   {0x04, 7}, {0x15,12}, {0x05, 7}, {0x11,12},

  121.   {0x78, 7}, {0x11,13}, {0x7a, 7}, {0x10,13},

  122.   {0x21, 8}, {0x1a,16}, {0x25, 8}, {0x19,16},

  123.   {0x24, 8}, {0x18,16}, {0x05, 9}, {0x17,16},

  124.   {0x07, 9}, {0x16,16}, {0x0d,10}, {0x15,16},

  125.   {0x1f,12}, {0x1a,12}, {0x19,12}, {0x17,12},

  126.   {0x16,12}, {0x1f,13}, {0x1e,13}, {0x1d,13},

  127.   {0x1c,13}, {0x1b,13}, {0x1f,16}, {0x1e,16},

  128.   {0x1d,16}, {0x1c,16}, {0x1b,16},

  129.   {0x01,6}, /* escape */

  130.   {0x06,4}, /* EOB */

  131. };

  132. 

  133. static const int8_t mpeg1_level[111] = {

  134.   1,  2,  3,  4,  5,  6,  7,  8,

  135.   9, 10, 11, 12, 13, 14, 15, 16,

  136.  17, 18, 19, 20, 21, 22, 23, 24,

  137.  25, 26, 27, 28, 29, 30, 31, 32,

  138.  33, 34, 35, 36, 37, 38, 39, 40,

  139.   1,  2,  3,  4,  5,  6,  7,  8,

  140.   9, 10, 11, 12, 13, 14, 15, 16,

  141.  17, 18,  1,  2,  3,  4,  5,  1,

  142.   2,  3,  4,  1,  2,  3,  1,  2,

  143.   3,  1,  2,  3,  1,  2,  1,  2,

  144.   1,  2,  1,  2,  1,  2,  1,  2,

  145.   1,  2,  1,  2,  1,  2,  1,  2,

  146.   1,  1,  1,  1,  1,  1,  1,  1,

  147.   1,  1,  1,  1,  1,  1,  1,

  148. };

  149. 

  150. static const int8_t mpeg1_run[111] = {

  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.   0,  0,  0,  0,  0,  0,  0,  0,

  156.   1,  1,  1,  1,  1,  1,  1,  1,

  157.   1,  1,  1,  1,  1,  1,  1,  1,

  158.   1,  1,  2,  2,  2,  2,  2,  3,

  159.   3,  3,  3,  4,  4,  4,  5,  5,

  160.   5,  6,  6,  6,  7,  7,  8,  8,

  161.   9,  9, 10, 10, 11, 11, 12, 12,

  162.  13, 13, 14, 14, 15, 15, 16, 16,

  163.  17, 18, 19, 20, 21, 22, 23, 24,

  164.  25, 26, 27, 28, 29, 30, 31,

  165. };

  166. 

  167. static RLTable rl_mpeg1 = {

  168.     111,

  169.     111,

  170.     mpeg1_vlc,

  171.     mpeg1_run,

  172.     mpeg1_level,

  173. };

  174. 

  175. static RLTable rl_mpeg2 = {

  176.     111,

  177.     111,

  178.     mpeg2_vlc,

  179.     mpeg1_run,

  180.     mpeg1_level,

  181. };

  182. 

  183. static const uint8_t mbAddrIncrTable[36][2] = {

  184.     {0x1, 1},

  185.     {0x3, 3},

  186.     {0x2, 3},

  187.     {0x3, 4},

  188.     {0x2, 4},

  189.     {0x3, 5},

  190.     {0x2, 5},

  191.     {0x7, 7},

  192.     {0x6, 7},

  193.     {0xb, 8},

  194.     {0xa, 8},

  195.     {0x9, 8},

  196.     {0x8, 8},

  197.     {0x7, 8},

  198.     {0x6, 8},

  199.     {0x17, 10},

  200.     {0x16, 10},

  201.     {0x15, 10},

  202.     {0x14, 10},

  203.     {0x13, 10},

  204.     {0x12, 10},

  205.     {0x23, 11},

  206.     {0x22, 11},

  207.     {0x21, 11},

  208.     {0x20, 11},

  209.     {0x1f, 11},

  210.     {0x1e, 11},

  211.     {0x1d, 11},

  212.     {0x1c, 11},

  213.     {0x1b, 11},

  214.     {0x1a, 11},

  215.     {0x19, 11},

  216.     {0x18, 11},

  217.     {0x8, 11}, /* escape */

  218.     {0xf, 11}, /* stuffing */

  219.     {0x0, 8}, /* end (and 15 more 0 bits should follow) */

  220. };

  221. 

  222. static const uint8_t mbPatTable[64][2] = {

  223.     {0x1, 9},

  224.     {0xb, 5},

  225.     {0x9, 5},

  226.     {0xd, 6},

  227.     {0xd, 4},

  228.     {0x17, 7},

  229.     {0x13, 7},

  230.     {0x1f, 8},

  231.     {0xc, 4},

  232.     {0x16, 7},

  233.     {0x12, 7},

  234.     {0x1e, 8},

  235.     {0x13, 5},

  236.     {0x1b, 8},

  237.     {0x17, 8},

  238.     {0x13, 8},

  239.     {0xb, 4},

  240.     {0x15, 7},

  241.     {0x11, 7},

  242.     {0x1d, 8},

  243.     {0x11, 5},

  244.     {0x19, 8},

  245.     {0x15, 8},

  246.     {0x11, 8},

  247.     {0xf, 6},

  248.     {0xf, 8},

  249.     {0xd, 8},

  250.     {0x3, 9},

  251.     {0xf, 5},

  252.     {0xb, 8},

  253.     {0x7, 8},

  254.     {0x7, 9},

  255.     {0xa, 4},

  256.     {0x14, 7},

  257.     {0x10, 7},

  258.     {0x1c, 8},

  259.     {0xe, 6},

  260.     {0xe, 8},

  261.     {0xc, 8},

  262.     {0x2, 9},

  263.     {0x10, 5},

  264.     {0x18, 8},

  265.     {0x14, 8},

  266.     {0x10, 8},

  267.     {0xe, 5},

  268.     {0xa, 8},

  269.     {0x6, 8},

  270.     {0x6, 9},

  271.     {0x12, 5},

  272.     {0x1a, 8},

  273.     {0x16, 8},

  274.     {0x12, 8},

  275.     {0xd, 5},

  276.     {0x9, 8},

  277.     {0x5, 8},

  278.     {0x5, 9},

  279.     {0xc, 5},

  280.     {0x8, 8},

  281.     {0x4, 8},

  282.     {0x4, 9},

  283.     {0x7, 3},

  284.     {0xa, 5},

  285.     {0x8, 5},

  286.     {0xc, 6}

  287. };

  288. 

  289. #define MB_TYPE_ZERO_MV   0x20000000

  290. #define IS_ZERO_MV(a)   ((a)&MB_TYPE_ZERO_MV)

  291. 

  292. static const uint8_t table_mb_ptype[7][2] = {

  293.     { 3, 5 }, // 0x01 MB_INTRA

  294.     { 1, 2 }, // 0x02 MB_PAT

  295.     { 1, 3 }, // 0x08 MB_FOR

  296.     { 1, 1 }, // 0x0A MB_FOR|MB_PAT

  297.     { 1, 6 }, // 0x11 MB_QUANT|MB_INTRA

  298.     { 1, 5 }, // 0x12 MB_QUANT|MB_PAT

  299.     { 2, 5 }, // 0x1A MB_QUANT|MB_FOR|MB_PAT

  300. };

  301. 

  302. static const uint32_t ptype2mb_type[7] = {

  303.                     MB_TYPE_INTRA,

  304.                     MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_ZERO_MV | MB_TYPE_16x16,

  305.                     MB_TYPE_L0,

  306.                     MB_TYPE_L0 | MB_TYPE_CBP,

  307.     MB_TYPE_QUANT | MB_TYPE_INTRA,

  308.     MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_ZERO_MV | MB_TYPE_16x16,

  309.     MB_TYPE_QUANT | MB_TYPE_L0 | MB_TYPE_CBP,

  310. };

  311. 

  312. static const uint8_t table_mb_btype[11][2] = {

  313.     { 3, 5 }, // 0x01 MB_INTRA

  314.     { 2, 3 }, // 0x04 MB_BACK

  315.     { 3, 3 }, // 0x06 MB_BACK|MB_PAT

  316.     { 2, 4 }, // 0x08 MB_FOR

  317.     { 3, 4 }, // 0x0A MB_FOR|MB_PAT

  318.     { 2, 2 }, // 0x0C MB_FOR|MB_BACK

  319.     { 3, 2 }, // 0x0E MB_FOR|MB_BACK|MB_PAT

  320.     { 1, 6 }, // 0x11 MB_QUANT|MB_INTRA

  321.     { 2, 6 }, // 0x16 MB_QUANT|MB_BACK|MB_PAT

  322.     { 3, 6 }, // 0x1A MB_QUANT|MB_FOR|MB_PAT

  323.     { 2, 5 }, // 0x1E MB_QUANT|MB_FOR|MB_BACK|MB_PAT

  324. };

  325. 

  326. static const uint32_t btype2mb_type[11] = {

  327.                     MB_TYPE_INTRA,

  328.                     MB_TYPE_L1,

  329.                     MB_TYPE_L1   | MB_TYPE_CBP,

  330.                     MB_TYPE_L0,

  331.                     MB_TYPE_L0   | MB_TYPE_CBP,

  332.                     MB_TYPE_L0L1,

  333.                     MB_TYPE_L0L1 | MB_TYPE_CBP,

  334.     MB_TYPE_QUANT | MB_TYPE_INTRA,

  335.     MB_TYPE_QUANT | MB_TYPE_L1   | MB_TYPE_CBP,

  336.     MB_TYPE_QUANT | MB_TYPE_L0   | MB_TYPE_CBP,

  337.     MB_TYPE_QUANT | MB_TYPE_L0L1 | MB_TYPE_CBP,

  338. };

  339. 

  340. static const uint8_t mbMotionVectorTable[17][2] = {

  341. { 0x1, 1 },

  342. { 0x1, 2 },

  343. { 0x1, 3 },

  344. { 0x1, 4 },

  345. { 0x3, 6 },

  346. { 0x5, 7 },

  347. { 0x4, 7 },

  348. { 0x3, 7 },

  349. { 0xb, 9 },

  350. { 0xa, 9 },

  351. { 0x9, 9 },

  352. { 0x11, 10 },

  353. { 0x10, 10 },

  354. { 0xf, 10 },

  355. { 0xe, 10 },

  356. { 0xd, 10 },

  357. { 0xc, 10 },

  358. };

  359. 

  360. const AVRational ff_frame_rate_tab[] = {

  361.     {    0,    0},

  362.     {24000, 1001},

  363.     {   24,    1},

  364.     {   25,    1},

  365.     {30000, 1001},

  366.     {   30,    1},

  367.     {   50,    1},

  368.     {60000, 1001},

  369.     {   60,    1},

  370.   // Xing's 15fps: (9)

  371.     {   15,    1},

  372.   // libmpeg3's "Unofficial economy rates": (10-13)

  373.     {    5,    1},

  374.     {   10,    1},

  375.     {   12,    1},

  376.     {   15,    1},

  377.     {    0,    0},

  378. };

  379. 

  380. static const uint8_t non_linear_qscale[32] = {

  381.     0, 1, 2, 3, 4, 5, 6, 7,

  382.     8,10,12,14,16,18,20,22,

  383.     24,28,32,36,40,44,48,52,

  384.     56,64,72,80,88,96,104,112,

  385. };

  386. 

  387. static const uint8_t inv_non_linear_qscale[13] = {

  388.     0, 2, 4, 6, 8,

  389.     9,10,11,12,13,14,15,16,

  390. };

  391. 

  392. const uint8_t ff_mpeg1_dc_scale_table[128]={

  393. //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

  394.     8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,

  395.     8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,

  396.     8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,

  397.     8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,

  398. };

  399. 

  400. static const uint8_t mpeg2_dc_scale_table1[128]={

  401. //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

  402.     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,

  403.     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,

  404.     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,

  405.     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,

  406. };

  407. 

  408. static const uint8_t mpeg2_dc_scale_table2[128]={

  409. //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

  410.     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,

  411.     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,

  412.     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,

  413.     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,

  414. };

  415. 

  416. static const uint8_t mpeg2_dc_scale_table3[128]={

  417. //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

  418.     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,

  419.     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,

  420.     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,

  421.     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,

  422. };

  423. 

  424. static const uint8_t *mpeg2_dc_scale_table[4]={

  425.     ff_mpeg1_dc_scale_table,

  426.     mpeg2_dc_scale_table1,

  427.     mpeg2_dc_scale_table2,

  428.     mpeg2_dc_scale_table3,

  429. };

  430. 

  431. static const float mpeg1_aspect[16]={

  432.     0.0000,

  433.     1.0000,

  434.     0.6735,

  435.     0.7031,

  436. 

  437.     0.7615,

  438.     0.8055,

  439.     0.8437,

  440.     0.8935,

  441. 

  442.     0.9157,

  443.     0.9815,

  444.     1.0255,

  445.     1.0695,

  446. 

  447.     1.0950,

  448.     1.1575,

  449.     1.2015,

  450. };

  451. 

  452. static const AVRational mpeg2_aspect[16]={

  453.     {0,1},

  454.     {1,1},

  455.     {4,3},

  456.     {16,9},

  457.     {221,100},

  458.     {0,1},

  459.     {0,1},

  460.     {0,1},

  461.     {0,1},

  462.     {0,1},

  463.     {0,1},

  464.     {0,1},

  465.     {0,1},

  466.     {0,1},

  467.     {0,1},

  468.     {0,1},

  469. };

  470. 

  471. static const uint8_t svcd_scan_offset_placeholder[14]={

  472.     0x10, 0x0E,

  473.     0x00, 0x80, 0x81,

  474.     0x00, 0x80, 0x81,

  475.     0xff, 0xff, 0xff,

  476.     0xff, 0xff, 0xff,

  477. };