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FFmpeg/libavcodec/liba52/tables.h

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  1. /*

  2.  * tables.h

  3.  * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>

  4.  * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>

  5.  *

  6.  * This file is part of a52dec, a free ATSC A-52 stream decoder.

  7.  * See http://liba52.sourceforge.net/ for updates.

  8.  *

  9.  * a52dec is free software; you can redistribute it and/or modify

  10.  * it under the terms of the GNU General Public License as published by

  11.  * the Free Software Foundation; either version 2 of the License, or

  12.  * (at your option) any later version.

  13.  *

  14.  * a52dec is distributed in the hope that it will be useful,

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

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

  17.  * GNU General Public License for more details.

  18.  *

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

  20.  * along with this program; if not, write to the Free Software

  21.  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

  22.  */

  23. 

  24. static const int8_t exp_1[128] = {

  25.     -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,

  26.     -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,

  27.      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,

  28.      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,

  29.      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,

  30.     25,25,25

  31. };

  32. static const int8_t exp_2[128] = {

  33.     -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,

  34.     -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,

  35.     -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,

  36.     -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,

  37.     -2,-2,-2,-2,-2,-1,-1,-1,-1,-1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2,

  38.     25,25,25

  39. };

  40. static const int8_t exp_3[128] = {

  41.     -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,

  42.     -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,

  43.     -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,

  44.     -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,

  45.     -2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,-2,-1, 0, 1, 2,

  46.     25,25,25

  47. };

  48. 

  49. #define Q(x) ROUND (32768.0 * x)

  50. 

  51. #define Q0 Q (-2/3)

  52. #define Q1 Q (0)

  53. #define Q2 Q (2/3)

  54. 

  55. static const quantizer_t q_1_0[32] = {

  56.     Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0,

  57.     Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1,

  58.     Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2,

  59.     0,  0,  0,  0,  0

  60. };

  61. 

  62. static const quantizer_t q_1_1[32] = {

  63.     Q0, Q0, Q0, Q1, Q1, Q1, Q2, Q2, Q2,

  64.     Q0, Q0, Q0, Q1, Q1, Q1, Q2, Q2, Q2,

  65.     Q0, Q0, Q0, Q1, Q1, Q1, Q2, Q2, Q2,

  66.     0,  0,  0,  0,  0

  67. };

  68. 

  69. static const quantizer_t q_1_2[32] = {

  70.     Q0, Q1, Q2, Q0, Q1, Q2, Q0, Q1, Q2,

  71.     Q0, Q1, Q2, Q0, Q1, Q2, Q0, Q1, Q2,

  72.     Q0, Q1, Q2, Q0, Q1, Q2, Q0, Q1, Q2,

  73.     0,  0,  0,  0,  0

  74. };

  75. 

  76. #undef Q0

  77. #undef Q1

  78. #undef Q2

  79. 

  80. #define Q0 Q (-4/5)

  81. #define Q1 Q (-2/5)

  82. #define Q2 Q (0)

  83. #define Q3 Q (2/5)

  84. #define Q4 Q (4/5)

  85. 

  86. static const quantizer_t q_2_0[128] = {

  87.     Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,Q0,

  88.     Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,Q1,

  89.     Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,Q2,

  90.     Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,Q3,

  91.     Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,Q4,

  92.     0,0,0

  93. };

  94. 

  95. static const quantizer_t q_2_1[128] = {

  96.     Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,

  97.     Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,

  98.     Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,

  99.     Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,

  100.     Q0,Q0,Q0,Q0,Q0,Q1,Q1,Q1,Q1,Q1,Q2,Q2,Q2,Q2,Q2,Q3,Q3,Q3,Q3,Q3,Q4,Q4,Q4,Q4,Q4,

  101.     0,0,0

  102. };

  103. 

  104. static const quantizer_t q_2_2[128] = {

  105.     Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,

  106.     Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,

  107.     Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,

  108.     Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,

  109.     Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,Q0,Q1,Q2,Q3,Q4,

  110.     0,0,0

  111. };

  112. 

  113. #undef Q0

  114. #undef Q1

  115. #undef Q2

  116. #undef Q3

  117. #undef Q4

  118. 

  119. static const quantizer_t q_3[8] = {

  120.     Q (-6/7), Q (-4/7), Q (-2/7), Q (0), Q (2/7), Q (4/7), Q (6/7), 0

  121. };

  122. 

  123. #define Q0 Q (-10/11)

  124. #define Q1 Q (-8/11)

  125. #define Q2 Q (-6/11)

  126. #define Q3 Q (-4/11)

  127. #define Q4 Q (-2/11)

  128. #define Q5 Q (0)

  129. #define Q6 Q (2/11)

  130. #define Q7 Q (4/11)

  131. #define Q8 Q (6/11)

  132. #define Q9 Q (8/11)

  133. #define QA Q (10/11)

  134. 

  135. static const quantizer_t q_4_0[128] = {

  136.     Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0, Q0,

  137.     Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1, Q1,

  138.     Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2, Q2,

  139.     Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3, Q3,

  140.     Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4, Q4,

  141.     Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5, Q5,

  142.     Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6, Q6,

  143.     Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7, Q7,

  144.     Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8, Q8,

  145.     Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9, Q9,

  146.     QA, QA, QA, QA, QA, QA, QA, QA, QA, QA, QA,

  147.     0,  0,  0,  0,  0,  0,  0

  148. };

  149. 

  150. static const quantizer_t q_4_1[128] = {

  151.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  152.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  153.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  154.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  155.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  156.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  157.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  158.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  159.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  160.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  161.     Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, QA,

  162.     0,  0,  0,  0,  0,  0,  0

  163. };

  164. 

  165. #undef Q0

  166. #undef Q1

  167. #undef Q2

  168. #undef Q3

  169. #undef Q4

  170. #undef Q5

  171. #undef Q6

  172. #undef Q7

  173. #undef Q8

  174. #undef Q9

  175. #undef QA

  176. 

  177. static const quantizer_t q_5[16] = {

  178.     Q (-14/15), Q (-12/15), Q (-10/15), Q (-8/15), Q (-6/15),

  179.     Q (-4/15), Q (-2/15), Q (0), Q (2/15), Q (4/15),

  180.     Q (6/15), Q (8/15), Q (10/15), Q (12/15), Q (14/15), 0

  181. };

  182. 

  183. #ifndef LIBA52_FIXED

  184. static const sample_t scale_factor[25] = {

  185.     0.000030517578125,

  186.     0.0000152587890625,

  187.     0.00000762939453125,

  188.     0.000003814697265625,

  189.     0.0000019073486328125,

  190.     0.00000095367431640625,

  191.     0.000000476837158203125,

  192.     0.0000002384185791015625,

  193.     0.00000011920928955078125,

  194.     0.000000059604644775390625,

  195.     0.0000000298023223876953125,

  196.     0.00000001490116119384765625,

  197.     0.000000007450580596923828125,

  198.     0.0000000037252902984619140625,

  199.     0.00000000186264514923095703125,

  200.     0.000000000931322574615478515625,

  201.     0.0000000004656612873077392578125,

  202.     0.00000000023283064365386962890625,

  203.     0.000000000116415321826934814453125,

  204.     0.0000000000582076609134674072265625,

  205.     0.00000000002910383045673370361328125,

  206.     0.000000000014551915228366851806640625,

  207.     0.0000000000072759576141834259033203125,

  208.     0.00000000000363797880709171295166015625,

  209.     0.000000000001818989403545856475830078125

  210. };

  211. #endif

  212. 

  213. static const uint16_t dither_lut[256] = {

  214.     0x0000, 0xa011, 0xe033, 0x4022, 0x6077, 0xc066, 0x8044, 0x2055,

  215.     0xc0ee, 0x60ff, 0x20dd, 0x80cc, 0xa099, 0x0088, 0x40aa, 0xe0bb,

  216.     0x21cd, 0x81dc, 0xc1fe, 0x61ef, 0x41ba, 0xe1ab, 0xa189, 0x0198,

  217.     0xe123, 0x4132, 0x0110, 0xa101, 0x8154, 0x2145, 0x6167, 0xc176,

  218.     0x439a, 0xe38b, 0xa3a9, 0x03b8, 0x23ed, 0x83fc, 0xc3de, 0x63cf,

  219.     0x8374, 0x2365, 0x6347, 0xc356, 0xe303, 0x4312, 0x0330, 0xa321,

  220.     0x6257, 0xc246, 0x8264, 0x2275, 0x0220, 0xa231, 0xe213, 0x4202,

  221.     0xa2b9, 0x02a8, 0x428a, 0xe29b, 0xc2ce, 0x62df, 0x22fd, 0x82ec,

  222.     0x8734, 0x2725, 0x6707, 0xc716, 0xe743, 0x4752, 0x0770, 0xa761,

  223.     0x47da, 0xe7cb, 0xa7e9, 0x07f8, 0x27ad, 0x87bc, 0xc79e, 0x678f,

  224.     0xa6f9, 0x06e8, 0x46ca, 0xe6db, 0xc68e, 0x669f, 0x26bd, 0x86ac,

  225.     0x6617, 0xc606, 0x8624, 0x2635, 0x0660, 0xa671, 0xe653, 0x4642,

  226.     0xc4ae, 0x64bf, 0x249d, 0x848c, 0xa4d9, 0x04c8, 0x44ea, 0xe4fb,

  227.     0x0440, 0xa451, 0xe473, 0x4462, 0x6437, 0xc426, 0x8404, 0x2415,

  228.     0xe563, 0x4572, 0x0550, 0xa541, 0x8514, 0x2505, 0x6527, 0xc536,

  229.     0x258d, 0x859c, 0xc5be, 0x65af, 0x45fa, 0xe5eb, 0xa5c9, 0x05d8,

  230.     0xae79, 0x0e68, 0x4e4a, 0xee5b, 0xce0e, 0x6e1f, 0x2e3d, 0x8e2c,

  231.     0x6e97, 0xce86, 0x8ea4, 0x2eb5, 0x0ee0, 0xaef1, 0xeed3, 0x4ec2,

  232.     0x8fb4, 0x2fa5, 0x6f87, 0xcf96, 0xefc3, 0x4fd2, 0x0ff0, 0xafe1,

  233.     0x4f5a, 0xef4b, 0xaf69, 0x0f78, 0x2f2d, 0x8f3c, 0xcf1e, 0x6f0f,

  234.     0xede3, 0x4df2, 0x0dd0, 0xadc1, 0x8d94, 0x2d85, 0x6da7, 0xcdb6,

  235.     0x2d0d, 0x8d1c, 0xcd3e, 0x6d2f, 0x4d7a, 0xed6b, 0xad49, 0x0d58,

  236.     0xcc2e, 0x6c3f, 0x2c1d, 0x8c0c, 0xac59, 0x0c48, 0x4c6a, 0xec7b,

  237.     0x0cc0, 0xacd1, 0xecf3, 0x4ce2, 0x6cb7, 0xcca6, 0x8c84, 0x2c95,

  238.     0x294d, 0x895c, 0xc97e, 0x696f, 0x493a, 0xe92b, 0xa909, 0x0918,

  239.     0xe9a3, 0x49b2, 0x0990, 0xa981, 0x89d4, 0x29c5, 0x69e7, 0xc9f6,

  240.     0x0880, 0xa891, 0xe8b3, 0x48a2, 0x68f7, 0xc8e6, 0x88c4, 0x28d5,

  241.     0xc86e, 0x687f, 0x285d, 0x884c, 0xa819, 0x0808, 0x482a, 0xe83b,

  242.     0x6ad7, 0xcac6, 0x8ae4, 0x2af5, 0x0aa0, 0xaab1, 0xea93, 0x4a82,

  243.     0xaa39, 0x0a28, 0x4a0a, 0xea1b, 0xca4e, 0x6a5f, 0x2a7d, 0x8a6c,

  244.     0x4b1a, 0xeb0b, 0xab29, 0x0b38, 0x2b6d, 0x8b7c, 0xcb5e, 0x6b4f,

  245.     0x8bf4, 0x2be5, 0x6bc7, 0xcbd6, 0xeb83, 0x4b92, 0x0bb0, 0xaba1

  246. };