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  1. /*
  2.  * H263+ tables
  3.  *
  4.  * This file is part of FFmpeg.
  5.  *
  6.  * FFmpeg is free software; you can redistribute it and/or
  7.  * modify it under the terms of the GNU Lesser General Public
  8.  * License as published by the Free Software Foundation; either
  9.  * version 2.1 of the License, or (at your option) any later version.
  10.  *
  11.  * FFmpeg is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14.  * Lesser General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU Lesser General Public
  17.  * License along with FFmpeg; if not, write to the Free Software
  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19.  */
  20.  
  21. /**
  22.  * @file
  23.  * H.263 tables.
  24.  */
  25.  
  26. #include <stdint.h>
  27.  
  28. #include "h263data.h"
  29. #include "mpegvideo.h"
  30.  
  31. uint8_t ff_h263_static_rl_table_store[2][2][2 * MAX_RUN + MAX_LEVEL + 3];
  32.  
  33. /* intra MCBPC, mb_type = (intra), then (intraq) */
  34. const uint8_t ff_h263_intra_MCBPC_code[9] = { 1, 1, 2, 3, 1, 1, 2, 3, 1 };
  35. const uint8_t ff_h263_intra_MCBPC_bits[9] = { 1, 3, 3, 3, 4, 6, 6, 6, 9 };
  36.  
  37. /* inter MCBPC, mb_type = (inter), (intra), (interq), (intraq), (inter4v) */
  38. /* Changed the tables for interq and inter4v+q, following the standard
  39.  * ** Juanjo ** */
  40. const uint8_t ff_h263_inter_MCBPC_code[28] = {
  41.     1,  3,  2,  5,
  42.     3,  4,  3,  3,
  43.     3,  7,  6,  5,
  44.     4,  4,  3,  2,
  45.     2,  5,  4,  5,
  46.     1,  0,  0,  0,  /* Stuffing */
  47.     2, 12, 14, 15,
  48. };
  49. const uint8_t ff_h263_inter_MCBPC_bits[28] = {
  50.      1,  4,  4,  6,  /* inter  */
  51.      5,  8,  8,  7,  /* intra  */
  52.      3,  7,  7,  9,  /* interQ */
  53.      6,  9,  9,  9,  /* intraQ */
  54.      3,  7,  7,  8,  /* inter4 */
  55.      9,  0,  0,  0,  /* Stuffing */
  56.     11, 13, 13, 13,  /* inter4Q */
  57. };
  58.  
  59. const uint8_t ff_h263_mbtype_b_tab[15][2] = {
  60.     { 1,  1 },
  61.     { 3,  3 },
  62.     { 1,  5 },
  63.     { 4,  4 },
  64.     { 5,  4 },
  65.     { 6,  6 },
  66.     { 2,  4 },
  67.     { 3,  4 },
  68.     { 7,  6 },
  69.     { 4,  6 },
  70.     { 5,  6 },
  71.     { 1,  6 },
  72.     { 1, 10 },
  73.     { 1,  7 },
  74.     { 1,  8 },
  75. };
  76.  
  77. const uint8_t ff_cbpc_b_tab[4][2] = {
  78.     { 0, 1 },
  79.     { 2, 2 },
  80.     { 7, 3 },
  81.     { 6, 3 },
  82. };
  83.  
  84. const uint8_t ff_h263_cbpy_tab[16][2] = {
  85.     {  3, 4 }, { 5, 5 }, { 4, 5 }, { 9, 4 }, {  3, 5 }, { 7, 4 }, { 2, 6 },
  86.     { 11, 4 }, { 2, 5 }, { 3, 6 }, { 5, 4 }, { 10, 4 }, { 4, 4 }, { 8, 4 },
  87.     {  6, 4 }, { 3, 2 }
  88. };
  89.  
  90. const uint8_t ff_mvtab[33][2] = {
  91.     {  1,  1 }, {  1,  2 }, {  1,  3 }, {  1,  4 }, {  3,  6 }, {  5,  7 },
  92.     {  4,  7 }, {  3,  7 }, { 11,  9 }, { 10,  9 }, {  9,  9 }, { 17, 10 },
  93.     { 16, 10 }, { 15, 10 }, { 14, 10 }, { 13, 10 }, { 12, 10 }, { 11, 10 },
  94.     { 10, 10 }, {  9, 10 }, {  8, 10 }, {  7, 10 }, {  6, 10 }, {  5, 10 },
  95.     {  4, 10 }, {  7, 11 }, {  6, 11 }, {  5, 11 }, {  4, 11 }, {  3, 11 },
  96.     {  2, 11 }, {  3, 12 }, {  2, 12 }
  97. };
  98.  
  99. /* third non intra table */
  100. const uint16_t ff_inter_vlc[103][2] = {
  101.     {  0x2,  2 }, {  0xf,  4 }, { 0x15,  6 }, { 0x17,  7 },
  102.     { 0x1f,  8 }, { 0x25,  9 }, { 0x24,  9 }, { 0x21, 10 },
  103.     { 0x20, 10 }, {  0x7, 11 }, {  0x6, 11 }, { 0x20, 11 },
  104.     {  0x6,  3 }, { 0x14,  6 }, { 0x1e,  8 }, {  0xf, 10 },
  105.     { 0x21, 11 }, { 0x50, 12 }, {  0xe,  4 }, { 0x1d,  8 },
  106.     {  0xe, 10 }, { 0x51, 12 }, {  0xd,  5 }, { 0x23,  9 },
  107.     {  0xd, 10 }, {  0xc,  5 }, { 0x22,  9 }, { 0x52, 12 },
  108.     {  0xb,  5 }, {  0xc, 10 }, { 0x53, 12 }, { 0x13,  6 },
  109.     {  0xb, 10 }, { 0x54, 12 }, { 0x12,  6 }, {  0xa, 10 },
  110.     { 0x11,  6 }, {  0x9, 10 }, { 0x10,  6 }, {  0x8, 10 },
  111.     { 0x16,  7 }, { 0x55, 12 }, { 0x15,  7 }, { 0x14,  7 },
  112.     { 0x1c,  8 }, { 0x1b,  8 }, { 0x21,  9 }, { 0x20,  9 },
  113.     { 0x1f,  9 }, { 0x1e,  9 }, { 0x1d,  9 }, { 0x1c,  9 },
  114.     { 0x1b,  9 }, { 0x1a,  9 }, { 0x22, 11 }, { 0x23, 11 },
  115.     { 0x56, 12 }, { 0x57, 12 }, {  0x7,  4 }, { 0x19,  9 },
  116.     {  0x5, 11 }, {  0xf,  6 }, {  0x4, 11 }, {  0xe,  6 },
  117.     {  0xd,  6 }, {  0xc,  6 }, { 0x13,  7 }, { 0x12,  7 },
  118.     { 0x11,  7 }, { 0x10,  7 }, { 0x1a,  8 }, { 0x19,  8 },
  119.     { 0x18,  8 }, { 0x17,  8 }, { 0x16,  8 }, { 0x15,  8 },
  120.     { 0x14,  8 }, { 0x13,  8 }, { 0x18,  9 }, { 0x17,  9 },
  121.     { 0x16,  9 }, { 0x15,  9 }, { 0x14,  9 }, { 0x13,  9 },
  122.     { 0x12,  9 }, { 0x11,  9 }, {  0x7, 10 }, {  0x6, 10 },
  123.     {  0x5, 10 }, {  0x4, 10 }, { 0x24, 11 }, { 0x25, 11 },
  124.     { 0x26, 11 }, { 0x27, 11 }, { 0x58, 12 }, { 0x59, 12 },
  125.     { 0x5a, 12 }, { 0x5b, 12 }, { 0x5c, 12 }, { 0x5d, 12 },
  126.     { 0x5e, 12 }, { 0x5f, 12 }, {  0x3,  7 },
  127. };
  128.  
  129. const int8_t ff_inter_level[102] = {
  130.     1,  2,  3,  4, 5, 6, 7, 8,
  131.     9, 10, 11, 12, 1, 2, 3, 4,
  132.     5,  6,  1,  2, 3, 4, 1, 2,
  133.     3,  1,  2,  3, 1, 2, 3, 1,
  134.     2,  3,  1,  2, 1, 2, 1, 2,
  135.     1,  2,  1,  1, 1, 1, 1, 1,
  136.     1,  1,  1,  1, 1, 1, 1, 1,
  137.     1,  1,  1,  2, 3, 1, 2, 1,
  138.     1,  1,  1,  1, 1, 1, 1, 1,
  139.     1,  1,  1,  1, 1, 1, 1, 1,
  140.     1,  1,  1,  1, 1, 1, 1, 1,
  141.     1,  1,  1,  1, 1, 1, 1, 1,
  142.     1,  1,  1,  1, 1, 1,
  143. };
  144.  
  145. const int8_t ff_inter_run[102] = {
  146.     0,   0,  0,  0,  0,  0,  0,  0,
  147.     0,   0,  0,  0,  1,  1,  1,  1,
  148.     1,   1,  2,  2,  2,  2,  3,  3,
  149.     3,   4,  4,  4,  5,  5,  5,  6,
  150.     6,   6,  7,  7,  8,  8,  9,  9,
  151.     10, 10, 11, 12, 13, 14, 15, 16,
  152.     17, 18, 19, 20, 21, 22, 23, 24,
  153.     25, 26,  0,  0,  0,  1,  1,  2,
  154.     3,   4,  5,  6,  7,  8,  9, 10,
  155.     11, 12, 13, 14, 15, 16, 17, 18,
  156.     19, 20, 21, 22, 23, 24, 25, 26,
  157.     27, 28, 29, 30, 31, 32, 33, 34,
  158.     35, 36, 37, 38, 39, 40,
  159. };
  160.  
  161. RLTable ff_h263_rl_inter = {
  162.     102,
  163.     58,
  164.     ff_inter_vlc,
  165.     ff_inter_run,
  166.     ff_inter_level,
  167. };
  168.  
  169. static const uint16_t intra_vlc_aic[103][2] = {
  170.     {  0x2,  2 }, {  0x6,  3 }, {  0xe,  4 }, {  0xc,  5 },
  171.     {  0xd,  5 }, { 0x10,  6 }, { 0x11,  6 }, { 0x12,  6 },
  172.     { 0x16,  7 }, { 0x1b,  8 }, { 0x20,  9 }, { 0x21,  9 },
  173.     { 0x1a,  9 }, { 0x1b,  9 }, { 0x1c,  9 }, { 0x1d,  9 },
  174.     { 0x1e,  9 }, { 0x1f,  9 }, { 0x23, 11 }, { 0x22, 11 },
  175.     { 0x57, 12 }, { 0x56, 12 }, { 0x55, 12 }, { 0x54, 12 },
  176.     { 0x53, 12 }, {  0xf,  4 }, { 0x14,  6 }, { 0x14,  7 },
  177.     { 0x1e,  8 }, {  0xf, 10 }, { 0x21, 11 }, { 0x50, 12 },
  178.     {  0xb,  5 }, { 0x15,  7 }, {  0xe, 10 }, {  0x9, 10 },
  179.     { 0x15,  6 }, { 0x1d,  8 }, {  0xd, 10 }, { 0x51, 12 },
  180.     { 0x13,  6 }, { 0x23,  9 }, {  0x7, 11 }, { 0x17,  7 },
  181.     { 0x22,  9 }, { 0x52, 12 }, { 0x1c,  8 }, {  0xc, 10 },
  182.     { 0x1f,  8 }, {  0xb, 10 }, { 0x25,  9 }, {  0xa, 10 },
  183.     { 0x24,  9 }, {  0x6, 11 }, { 0x21, 10 }, { 0x20, 10 },
  184.     {  0x8, 10 }, { 0x20, 11 }, {  0x7,  4 }, {  0xc,  6 },
  185.     { 0x10,  7 }, { 0x13,  8 }, { 0x11,  9 }, { 0x12,  9 },
  186.     {  0x4, 10 }, { 0x27, 11 }, { 0x26, 11 }, { 0x5f, 12 },
  187.     {  0xf,  6 }, { 0x13,  9 }, {  0x5, 10 }, { 0x25, 11 },
  188.     {  0xe,  6 }, { 0x14,  9 }, { 0x24, 11 }, {  0xd,  6 },
  189.     {  0x6, 10 }, { 0x5e, 12 }, { 0x11,  7 }, {  0x7, 10 },
  190.     { 0x13,  7 }, { 0x5d, 12 }, { 0x12,  7 }, { 0x5c, 12 },
  191.     { 0x14,  8 }, { 0x5b, 12 }, { 0x15,  8 }, { 0x1a,  8 },
  192.     { 0x19,  8 }, { 0x18,  8 }, { 0x17,  8 }, { 0x16,  8 },
  193.     { 0x19,  9 }, { 0x15,  9 }, { 0x16,  9 }, { 0x18,  9 },
  194.     { 0x17,  9 }, {  0x4, 11 }, {  0x5, 11 }, { 0x58, 12 },
  195.     { 0x59, 12 }, { 0x5a, 12 }, {  0x3,  7 },
  196. };
  197.  
  198. static const int8_t intra_run_aic[102] = {
  199.     0,   0,  0,  0,  0,  0,  0,  0,
  200.     0,   0,  0,  0,  0,  0,  0,  0,
  201.     0,   0,  0,  0,  0,  0,  0,  0,
  202.     0,   1,  1,  1,  1,  1,  1,  1,
  203.     2,   2,  2,  2,  3,  3,  3,  3,
  204.     4,   4,  4,  5,  5,  5,  6,  6,
  205.     7,   7,  8,  8,  9,  9, 10, 11,
  206.     12, 13,  0,  0,  0,  0,  0,  0,
  207.     0,   0,  0,  0,  1,  1,  1,  1,
  208.     2,   2,  2,  3,  3,  3,  4,  4,
  209.     5,   5,  6,  6,  7,  7,  8,  9,
  210.     10, 11, 12, 13, 14, 15, 16, 17,
  211.     18, 19, 20, 21, 22, 23,
  212. };
  213.  
  214. static const int8_t intra_level_aic[102] = {
  215.     1,   2,  3,  4,  5,  6,  7,  8,
  216.     9,  10, 11, 12, 13, 14, 15, 16,
  217.     17, 18, 19, 20, 21, 22, 23, 24,
  218.     25,  1,  2,  3,  4,  5,  6,  7,
  219.     1,   2,  3,  4,  1,  2,  3,  4,
  220.     1,   2,  3,  1,  2,  3,  1,  2,
  221.     1,   2,  1,  2,  1,  2,  1,  1,
  222.     1,   1,  1,  2,  3,  4,  5,  6,
  223.     7,   8,  9, 10,  1,  2,  3,  4,
  224.     1,   2,  3,  1,  2,  3,  1,  2,
  225.     1,   2,  1,  2,  1,  2,  1,  1,
  226.     1,   1,  1,  1,  1,  1,  1,  1,
  227.     1,   1,  1,  1,  1,  1,
  228. };
  229.  
  230. RLTable ff_rl_intra_aic = {
  231.     102,
  232.     58,
  233.     intra_vlc_aic,
  234.     intra_run_aic,
  235.     intra_level_aic,
  236. };
  237.  
  238. const uint16_t ff_h263_format[8][2] = {
  239.     {    0,    0 },
  240.     {  128,   96 },
  241.     {  176,  144 },
  242.     {  352,  288 },
  243.     {  704,  576 },
  244.     { 1408, 1152 },
  245. };
  246.  
  247. const uint8_t ff_aic_dc_scale_table[32] = {
  248. //  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
  249.     0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62
  250. };
  251.  
  252. const uint8_t ff_modified_quant_tab[2][32] = {
  253. //      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
  254.     {
  255.         0, 3, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28
  256.     },
  257.     {
  258.         0, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 31, 31, 26
  259.     }
  260. };
  261.  
  262. const uint8_t ff_h263_chroma_qscale_table[32] = {
  263. //  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
  264.     0, 1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15
  265. };
  266.  
  267. const uint16_t ff_mba_max[6] = {
  268.     47, 98, 395, 1583, 6335, 9215
  269. };
  270.  
  271. const uint8_t ff_mba_length[7] = {
  272.     6, 7, 9, 11, 13, 14, 14
  273. };
  274.  
  275. const AVRational ff_h263_pixel_aspect[16] = {
  276.     {  0,  1 },
  277.     {  1,  1 },
  278.     { 12, 11 },
  279.     { 10, 11 },
  280.     { 16, 11 },
  281.     { 40, 33 },
  282.     {  0,  1 },
  283.     {  0,  1 },
  284.     {  0,  1 },
  285.     {  0,  1 },
  286.     {  0,  1 },
  287.     {  0,  1 },
  288.     {  0,  1 },
  289.     {  0,  1 },
  290.     {  0,  1 },
  291.     {  0,  1 },
  292. };
  293.