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astcenc_quantization.cpp

astcenc_quantization.cpp 29 KB
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  1. // SPDX-License-Identifier: Apache-2.0
    2. 

  2. // ----------------------------------------------------------------------------
    3. 

  3. // Copyright 2011-2021 Arm Limited
    4. 

  4. //
    5. 

  5. // Licensed under the Apache License, Version 2.0 (the "License"); you may not
    6. 

  6. // use this file except in compliance with the License. You may obtain a copy
    7. 

  7. // of the License at:
    8. 

  8. //
    9. 

  9. //     http://www.apache.org/licenses/LICENSE-2.0
    10. 

  10. //
    11. 

  11. // Unless required by applicable law or agreed to in writing, software
    12. 

  12. // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
    13. 

  13. // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
    14. 

  14. // License for the specific language governing permissions and limitations
    15. 

  15. // under the License.
    16. 

  16. // ----------------------------------------------------------------------------
    17. 

  17. 

  18. /**
    19. 

  19.  * @brief Functions and data tables for numeric quantization..
    20. 

  20.  */
    21. 

  21. 

  22. #include "astcenc_internal.h"
    23. 

  23. 

  24. #if !defined(ASTCENC_DECOMPRESS_ONLY)
    25. 

  25. 

  26. // Starts from QUANT_6
    27. 

  27. // Scrambled
    28. 

  28. const uint8_t color_quant_tables[17][256] {
    29. 

  29. 	{
    30. 

  30. 		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    31. 

  31. 		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 2,
    32. 

  32. 		2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    33. 

  33. 		2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    34. 

  34. 		2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 4, 4, 4,
    35. 

  35. 		4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    36. 

  36. 		4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    37. 

  37. 		4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    38. 

  38. 		5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
    39. 

  39. 		5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
    40. 

  40. 		5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
    41. 

  41. 		5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
    42. 

  42. 		3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
    43. 

  43. 		3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
    44. 

  44. 		3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    45. 

  45. 		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
    46. 

  46. 	},
    47. 

  47. 	{
    48. 

  48. 		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    49. 

  49. 		0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    50. 

  50. 		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    51. 

  51. 		1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    52. 

  52. 		2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    53. 

  53. 		2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3,
    54. 

  54. 		3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
    55. 

  55. 		3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
    56. 

  56. 		4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    57. 

  57. 		4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    58. 

  58. 		4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
    59. 

  59. 		5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
    60. 

  60. 		5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6,
    61. 

  61. 		6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
    62. 

  62. 		6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7,
    63. 

  63. 		7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
    64. 

  64. 	},
    65. 

  65. 	{
    66. 

  66. 		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2,
    67. 

  67. 		2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    68. 

  68. 		2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 4, 4, 4, 4, 4,
    69. 

  69. 		4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    70. 

  70. 		4, 4, 4, 4, 4, 4, 4, 6, 6, 6, 6, 6, 6, 6, 6, 6,
    71. 

  71. 		6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
    72. 

  72. 		6, 6, 6, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    73. 

  73. 		8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    74. 

  74. 		9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
    75. 

  75. 		9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7,
    76. 

  76. 		7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
    77. 

  77. 		7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5,
    78. 

  78. 		5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
    79. 

  79. 		5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
    80. 

  80. 		3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
    81. 

  81. 		3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
    82. 

  82. 	},
    83. 

  83. 	{
    84. 

  84. 		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4,
    85. 

  85. 		4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    86. 

  86. 		4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    87. 

  87. 		8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2,
    88. 

  88. 		2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
    89. 

  89. 		2, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
    90. 

  90. 		6, 6, 6, 6, 6, 6, 6, 6, 6, 10, 10, 10, 10, 10, 10, 10,
    91. 

  91. 		10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
    92. 

  92. 		11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
    93. 

  93. 		11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7,
    94. 

  94. 		7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3,
    95. 

  95. 		3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
    96. 

  96. 		3, 3, 3, 3, 3, 3, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
    97. 

  97. 		9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5,
    98. 

  98. 		5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
    99. 

  99. 		5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
    100. 

  100. 	},
    101. 

  101. 	{
    102. 

  102. 		0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1,
    103. 

  103. 		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2,
    104. 

  104. 		2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3,
    105. 

  105. 		3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
    106. 

  106. 		4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5,
    107. 

  107. 		5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6,
    108. 

  108. 		6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7,
    109. 

  109. 		7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
    110. 

  110. 		8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    111. 

  111. 		8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
    112. 

  112. 		9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
    113. 

  113. 		10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
    114. 

  114. 		11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
    115. 

  115. 		12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
    116. 

  116. 		13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
    117. 

  117. 		14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15
    118. 

  118. 	},
    119. 

  119. 	{
    120. 

  120. 		0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4,
    121. 

  121. 		4, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    122. 

  122. 		8, 8, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
    123. 

  123. 		16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2,
    124. 

  124. 		2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 6, 6, 6, 6, 6, 6,
    125. 

  125. 		6, 6, 6, 6, 6, 6, 6, 6, 10, 10, 10, 10, 10, 10, 10, 10,
    126. 

  126. 		10, 10, 10, 10, 10, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
    127. 

  127. 		14, 14, 14, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,
    128. 

  128. 		19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 15, 15, 15,
    129. 

  129. 		15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 11, 11, 11, 11,
    130. 

  130. 		11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7,
    131. 

  131. 		7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
    132. 

  132. 		3, 3, 3, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
    133. 

  133. 		13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 9,
    134. 

  134. 		9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5,
    135. 

  135. 		5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1
    136. 

  136. 	},
    137. 

  137. 	{
    138. 

  138. 		0, 0, 0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
    139. 

  139. 		8, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 2, 2, 2,
    140. 

  140. 		2, 2, 2, 2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 10, 10,
    141. 

  141. 		10, 10, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 4, 4, 4,
    142. 

  142. 		4, 4, 4, 4, 4, 4, 4, 4, 12, 12, 12, 12, 12, 12, 12, 12,
    143. 

  143. 		12, 12, 12, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 6, 6,
    144. 

  144. 		6, 6, 6, 6, 6, 6, 6, 6, 6, 14, 14, 14, 14, 14, 14, 14,
    145. 

  145. 		14, 14, 14, 14, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22,
    146. 

  146. 		23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 15, 15, 15, 15,
    147. 

  147. 		15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 7,
    148. 

  148. 		7, 7, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 13, 13, 13,
    149. 

  149. 		13, 13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5,
    150. 

  150. 		5, 5, 5, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 11, 11,
    151. 

  151. 		11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3,
    152. 

  152. 		3, 3, 3, 3, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 9,
    153. 

  153. 		9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1
    154. 

  154. 	},
    155. 

  155. 	{
    156. 

  156. 		0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
    157. 

  157. 		2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4,
    158. 

  158. 		4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6,
    159. 

  159. 		6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8,
    160. 

  160. 		8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10,
    161. 

  161. 		10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 12,
    162. 

  162. 		12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13,
    163. 

  163. 		14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
    164. 

  164. 		16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17,
    165. 

  165. 		18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19,
    166. 

  166. 		19, 20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 21, 21, 21,
    167. 

  167. 		21, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23,
    168. 

  168. 		23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 25, 25, 25, 25, 25, 25,
    169. 

  169. 		25, 25, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27,
    170. 

  170. 		27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29,
    171. 

  171. 		29, 29, 29, 30, 30, 30, 30, 30, 30, 30, 30, 31, 31, 31, 31, 31
    172. 

  172. 	},
    173. 

  173. 	{
    174. 

  174. 		0, 0, 0, 0, 8, 8, 8, 8, 8, 8, 16, 16, 16, 16, 16, 16,
    175. 

  175. 		16, 24, 24, 24, 24, 24, 24, 32, 32, 32, 32, 32, 32, 32, 2, 2,
    176. 

  176. 		2, 2, 2, 2, 10, 10, 10, 10, 10, 10, 10, 18, 18, 18, 18, 18,
    177. 

  177. 		18, 26, 26, 26, 26, 26, 26, 26, 34, 34, 34, 34, 34, 34, 4, 4,
    178. 

  178. 		4, 4, 4, 4, 4, 12, 12, 12, 12, 12, 12, 20, 20, 20, 20, 20,
    179. 

  179. 		20, 20, 28, 28, 28, 28, 28, 28, 36, 36, 36, 36, 36, 36, 36, 6,
    180. 

  180. 		6, 6, 6, 6, 6, 14, 14, 14, 14, 14, 14, 14, 22, 22, 22, 22,
    181. 

  181. 		22, 22, 30, 30, 30, 30, 30, 30, 30, 38, 38, 38, 38, 38, 38, 38,
    182. 

  182. 		39, 39, 39, 39, 39, 39, 39, 31, 31, 31, 31, 31, 31, 31, 23, 23,
    183. 

  183. 		23, 23, 23, 23, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7,
    184. 

  184. 		7, 37, 37, 37, 37, 37, 37, 37, 29, 29, 29, 29, 29, 29, 21, 21,
    185. 

  185. 		21, 21, 21, 21, 21, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5,
    186. 

  186. 		5, 5, 35, 35, 35, 35, 35, 35, 27, 27, 27, 27, 27, 27, 27, 19,
    187. 

  187. 		19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3,
    188. 

  188. 		3, 3, 33, 33, 33, 33, 33, 33, 33, 25, 25, 25, 25, 25, 25, 17,
    189. 

  189. 		17, 17, 17, 17, 17, 17, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1
    190. 

  190. 	},
    191. 

  191. 	{
    192. 

  192. 		0, 0, 0, 16, 16, 16, 16, 16, 16, 32, 32, 32, 32, 32, 2, 2,
    193. 

  193. 		2, 2, 2, 18, 18, 18, 18, 18, 18, 34, 34, 34, 34, 34, 4, 4,
    194. 

  194. 		4, 4, 4, 4, 20, 20, 20, 20, 20, 36, 36, 36, 36, 36, 6, 6,
    195. 

  195. 		6, 6, 6, 6, 22, 22, 22, 22, 22, 38, 38, 38, 38, 38, 38, 8,
    196. 

  196. 		8, 8, 8, 8, 24, 24, 24, 24, 24, 24, 40, 40, 40, 40, 40, 10,
    197. 

  197. 		10, 10, 10, 10, 26, 26, 26, 26, 26, 26, 42, 42, 42, 42, 42, 12,
    198. 

  198. 		12, 12, 12, 12, 12, 28, 28, 28, 28, 28, 44, 44, 44, 44, 44, 14,
    199. 

  199. 		14, 14, 14, 14, 14, 30, 30, 30, 30, 30, 46, 46, 46, 46, 46, 46,
    200. 

  200. 		47, 47, 47, 47, 47, 47, 31, 31, 31, 31, 31, 15, 15, 15, 15, 15,
    201. 

  201. 		15, 45, 45, 45, 45, 45, 29, 29, 29, 29, 29, 13, 13, 13, 13, 13,
    202. 

  202. 		13, 43, 43, 43, 43, 43, 27, 27, 27, 27, 27, 27, 11, 11, 11, 11,
    203. 

  203. 		11, 41, 41, 41, 41, 41, 25, 25, 25, 25, 25, 25, 9, 9, 9, 9,
    204. 

  204. 		9, 39, 39, 39, 39, 39, 39, 23, 23, 23, 23, 23, 7, 7, 7, 7,
    205. 

  205. 		7, 7, 37, 37, 37, 37, 37, 21, 21, 21, 21, 21, 5, 5, 5, 5,
    206. 

  206. 		5, 5, 35, 35, 35, 35, 35, 19, 19, 19, 19, 19, 19, 3, 3, 3,
    207. 

  207. 		3, 3, 33, 33, 33, 33, 33, 17, 17, 17, 17, 17, 17, 1, 1, 1
    208. 

  208. 	},
    209. 

  209. 	{
    210. 

  210. 		0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4,
    211. 

  211. 		4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8,
    212. 

  212. 		8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 12,
    213. 

  213. 		12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16,
    214. 

  214. 		16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19,
    215. 

  215. 		20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23,
    216. 

  216. 		24, 24, 24, 24, 25, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 27,
    217. 

  217. 		28, 28, 28, 28, 29, 29, 29, 29, 30, 30, 30, 30, 31, 31, 31, 31,
    218. 

  218. 		32, 32, 32, 32, 33, 33, 33, 33, 34, 34, 34, 34, 35, 35, 35, 35,
    219. 

  219. 		36, 36, 36, 36, 37, 37, 37, 37, 38, 38, 38, 38, 39, 39, 39, 39,
    220. 

  220. 		40, 40, 40, 40, 41, 41, 41, 41, 42, 42, 42, 42, 43, 43, 43, 43,
    221. 

  221. 		44, 44, 44, 44, 45, 45, 45, 45, 46, 46, 46, 46, 47, 47, 47, 47,
    222. 

  222. 		47, 48, 48, 48, 48, 49, 49, 49, 49, 50, 50, 50, 50, 51, 51, 51,
    223. 

  223. 		51, 52, 52, 52, 52, 53, 53, 53, 53, 54, 54, 54, 54, 55, 55, 55,
    224. 

  224. 		55, 56, 56, 56, 56, 57, 57, 57, 57, 58, 58, 58, 58, 59, 59, 59,
    225. 

  225. 		59, 60, 60, 60, 60, 61, 61, 61, 61, 62, 62, 62, 62, 63, 63, 63
    226. 

  226. 	},
    227. 

  227. 	{
    228. 

  228. 		0, 0, 16, 16, 16, 32, 32, 32, 48, 48, 48, 48, 64, 64, 64, 2,
    229. 

  229. 		2, 2, 18, 18, 18, 34, 34, 34, 50, 50, 50, 50, 66, 66, 66, 4,
    230. 

  230. 		4, 4, 20, 20, 20, 36, 36, 36, 36, 52, 52, 52, 68, 68, 68, 6,
    231. 

  231. 		6, 6, 22, 22, 22, 38, 38, 38, 38, 54, 54, 54, 70, 70, 70, 8,
    232. 

  232. 		8, 8, 24, 24, 24, 24, 40, 40, 40, 56, 56, 56, 72, 72, 72, 10,
    233. 

  233. 		10, 10, 26, 26, 26, 26, 42, 42, 42, 58, 58, 58, 74, 74, 74, 12,
    234. 

  234. 		12, 12, 12, 28, 28, 28, 44, 44, 44, 60, 60, 60, 76, 76, 76, 14,
    235. 

  235. 		14, 14, 14, 30, 30, 30, 46, 46, 46, 62, 62, 62, 78, 78, 78, 78,
    236. 

  236. 		79, 79, 79, 79, 63, 63, 63, 47, 47, 47, 31, 31, 31, 15, 15, 15,
    237. 

  237. 		15, 77, 77, 77, 61, 61, 61, 45, 45, 45, 29, 29, 29, 13, 13, 13,
    238. 

  238. 		13, 75, 75, 75, 59, 59, 59, 43, 43, 43, 27, 27, 27, 27, 11, 11,
    239. 

  239. 		11, 73, 73, 73, 57, 57, 57, 41, 41, 41, 25, 25, 25, 25, 9, 9,
    240. 

  240. 		9, 71, 71, 71, 55, 55, 55, 39, 39, 39, 39, 23, 23, 23, 7, 7,
    241. 

  241. 		7, 69, 69, 69, 53, 53, 53, 37, 37, 37, 37, 21, 21, 21, 5, 5,
    242. 

  242. 		5, 67, 67, 67, 51, 51, 51, 51, 35, 35, 35, 19, 19, 19, 3, 3,
    243. 

  243. 		3, 65, 65, 65, 49, 49, 49, 49, 33, 33, 33, 17, 17, 17, 1, 1
    244. 

  244. 	},
    245. 

  245. 	{
    246. 

  246. 		0, 0, 32, 32, 64, 64, 64, 2, 2, 2, 34, 34, 66, 66, 66, 4,
    247. 

  247. 		4, 4, 36, 36, 68, 68, 68, 6, 6, 6, 38, 38, 70, 70, 70, 8,
    248. 

  248. 		8, 8, 40, 40, 40, 72, 72, 10, 10, 10, 42, 42, 42, 74, 74, 12,
    249. 

  249. 		12, 12, 44, 44, 44, 76, 76, 14, 14, 14, 46, 46, 46, 78, 78, 16,
    250. 

  250. 		16, 16, 48, 48, 48, 80, 80, 80, 18, 18, 50, 50, 50, 82, 82, 82,
    251. 

  251. 		20, 20, 52, 52, 52, 84, 84, 84, 22, 22, 54, 54, 54, 86, 86, 86,
    252. 

  252. 		24, 24, 56, 56, 56, 88, 88, 88, 26, 26, 58, 58, 58, 90, 90, 90,
    253. 

  253. 		28, 28, 60, 60, 60, 92, 92, 92, 30, 30, 62, 62, 62, 94, 94, 94,
    254. 

  254. 		95, 95, 95, 63, 63, 63, 31, 31, 93, 93, 93, 61, 61, 61, 29, 29,
    255. 

  255. 		91, 91, 91, 59, 59, 59, 27, 27, 89, 89, 89, 57, 57, 57, 25, 25,
    256. 

  256. 		87, 87, 87, 55, 55, 55, 23, 23, 85, 85, 85, 53, 53, 53, 21, 21,
    257. 

  257. 		83, 83, 83, 51, 51, 51, 19, 19, 81, 81, 81, 49, 49, 49, 17, 17,
    258. 

  258. 		17, 79, 79, 47, 47, 47, 15, 15, 15, 77, 77, 45, 45, 45, 13, 13,
    259. 

  259. 		13, 75, 75, 43, 43, 43, 11, 11, 11, 73, 73, 41, 41, 41, 9, 9,
    260. 

  260. 		9, 71, 71, 71, 39, 39, 7, 7, 7, 69, 69, 69, 37, 37, 5, 5,
    261. 

  261. 		5, 67, 67, 67, 35, 35, 3, 3, 3, 65, 65, 65, 33, 33, 1, 1
    262. 

  262. 	},
    263. 

  263. 	{
    264. 

  264. 		0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7,
    265. 

  265. 		8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15,
    266. 

  266. 		16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23,
    267. 

  267. 		24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 30, 30, 31, 31,
    268. 

  268. 		32, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 38, 39, 39,
    269. 

  269. 		40, 40, 41, 41, 42, 42, 43, 43, 44, 44, 45, 45, 46, 46, 47, 47,
    270. 

  270. 		48, 48, 49, 49, 50, 50, 51, 51, 52, 52, 53, 53, 54, 54, 55, 55,
    271. 

  271. 		56, 56, 57, 57, 58, 58, 59, 59, 60, 60, 61, 61, 62, 62, 63, 63,
    272. 

  272. 		64, 64, 65, 65, 66, 66, 67, 67, 68, 68, 69, 69, 70, 70, 71, 71,
    273. 

  273. 		72, 72, 73, 73, 74, 74, 75, 75, 76, 76, 77, 77, 78, 78, 79, 79,
    274. 

  274. 		80, 80, 81, 81, 82, 82, 83, 83, 84, 84, 85, 85, 86, 86, 87, 87,
    275. 

  275. 		88, 88, 89, 89, 90, 90, 91, 91, 92, 92, 93, 93, 94, 94, 95, 95,
    276. 

  276. 		96, 96, 97, 97, 98, 98, 99, 99, 100, 100, 101, 101, 102, 102, 103, 103,
    277. 

  277. 		104, 104, 105, 105, 106, 106, 107, 107, 108, 108, 109, 109, 110, 110, 111, 111,
    278. 

  278. 		112, 112, 113, 113, 114, 114, 115, 115, 116, 116, 117, 117, 118, 118, 119, 119,
    279. 

  279. 		120, 120, 121, 121, 122, 122, 123, 123, 124, 124, 125, 125, 126, 126, 127, 127
    280. 

  280. 	},
    281. 

  281. 	{
    282. 

  282. 		0, 32, 32, 64, 96, 96, 128, 128, 2, 34, 34, 66, 98, 98, 130, 130,
    283. 

  283. 		4, 36, 36, 68, 100, 100, 132, 132, 6, 38, 38, 70, 102, 102, 134, 134,
    284. 

  284. 		8, 40, 40, 72, 104, 104, 136, 136, 10, 42, 42, 74, 106, 106, 138, 138,
    285. 

  285. 		12, 44, 44, 76, 108, 108, 140, 140, 14, 46, 46, 78, 110, 110, 142, 142,
    286. 

  286. 		16, 48, 48, 80, 112, 112, 144, 144, 18, 50, 50, 82, 114, 114, 146, 146,
    287. 

  287. 		20, 52, 52, 84, 116, 116, 148, 148, 22, 54, 54, 86, 118, 118, 150, 150,
    288. 

  288. 		24, 56, 56, 88, 120, 120, 152, 152, 26, 58, 58, 90, 122, 122, 154, 154,
    289. 

  289. 		28, 60, 60, 92, 124, 124, 156, 156, 30, 62, 62, 94, 126, 126, 158, 158,
    290. 

  290. 		159, 159, 127, 127, 95, 63, 63, 31, 157, 157, 125, 125, 93, 61, 61, 29,
    291. 

  291. 		155, 155, 123, 123, 91, 59, 59, 27, 153, 153, 121, 121, 89, 57, 57, 25,
    292. 

  292. 		151, 151, 119, 119, 87, 55, 55, 23, 149, 149, 117, 117, 85, 53, 53, 21,
    293. 

  293. 		147, 147, 115, 115, 83, 51, 51, 19, 145, 145, 113, 113, 81, 49, 49, 17,
    294. 

  294. 		143, 143, 111, 111, 79, 47, 47, 15, 141, 141, 109, 109, 77, 45, 45, 13,
    295. 

  295. 		139, 139, 107, 107, 75, 43, 43, 11, 137, 137, 105, 105, 73, 41, 41, 9,
    296. 

  296. 		135, 135, 103, 103, 71, 39, 39, 7, 133, 133, 101, 101, 69, 37, 37, 5,
    297. 

  297. 		131, 131, 99, 99, 67, 35, 35, 3, 129, 129, 97, 97, 65, 33, 33, 1
    298. 

  298. 	},
    299. 

  299. 	{
    300. 

  300. 		0, 64, 128, 128, 2, 66, 130, 130, 4, 68, 132, 132, 6, 70, 134, 134,
    301. 

  301. 		8, 72, 136, 136, 10, 74, 138, 138, 12, 76, 140, 140, 14, 78, 142, 142,
    302. 

  302. 		16, 80, 144, 144, 18, 82, 146, 146, 20, 84, 148, 148, 22, 86, 150, 150,
    303. 

  303. 		24, 88, 152, 152, 26, 90, 154, 154, 28, 92, 156, 156, 30, 94, 158, 158,
    304. 

  304. 		32, 96, 160, 160, 34, 98, 162, 162, 36, 100, 164, 164, 38, 102, 166, 166,
    305. 

  305. 		40, 104, 168, 168, 42, 106, 170, 170, 44, 108, 172, 172, 46, 110, 174, 174,
    306. 

  306. 		48, 112, 176, 176, 50, 114, 178, 178, 52, 116, 180, 180, 54, 118, 182, 182,
    307. 

  307. 		56, 120, 184, 184, 58, 122, 186, 186, 60, 124, 188, 188, 62, 126, 190, 190,
    308. 

  308. 		191, 191, 127, 63, 189, 189, 125, 61, 187, 187, 123, 59, 185, 185, 121, 57,
    309. 

  309. 		183, 183, 119, 55, 181, 181, 117, 53, 179, 179, 115, 51, 177, 177, 113, 49,
    310. 

  310. 		175, 175, 111, 47, 173, 173, 109, 45, 171, 171, 107, 43, 169, 169, 105, 41,
    311. 

  311. 		167, 167, 103, 39, 165, 165, 101, 37, 163, 163, 99, 35, 161, 161, 97, 33,
    312. 

  312. 		159, 159, 95, 31, 157, 157, 93, 29, 155, 155, 91, 27, 153, 153, 89, 25,
    313. 

  313. 		151, 151, 87, 23, 149, 149, 85, 21, 147, 147, 83, 19, 145, 145, 81, 17,
    314. 

  314. 		143, 143, 79, 15, 141, 141, 77, 13, 139, 139, 75, 11, 137, 137, 73, 9,
    315. 

  315. 		135, 135, 71, 7, 133, 133, 69, 5, 131, 131, 67, 3, 129, 129, 65, 1
    316. 

  316. 	},
    317. 

  317. 	{
    318. 

  318. 		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
    319. 

  319. 		16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
    320. 

  320. 		32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
    321. 

  321. 		48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
    322. 

  322. 		64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
    323. 

  323. 		80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
    324. 

  324. 		96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
    325. 

  325. 		112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127,
    326. 

  326. 		128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
    327. 

  327. 		144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
    328. 

  328. 		160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
    329. 

  329. 		176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
    330. 

  330. 		192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207,
    331. 

  331. 		208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223,
    332. 

  332. 		224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
    333. 

  333. 		240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255
    334. 

  334. 	}
    335. 

  335. };
    336. 

  336. 

  337. #endif
    338. 

  338. 

  339. // Starts from QUANT_6
    340. 

  340. // Scrambled
    341. 

  341. const uint8_t color_unquant_tables[17][256] {
    342. 

  342. 	{
    343. 

  343. 		0, 255, 51, 204, 102, 153
    344. 

  344. 	},
    345. 

  345. 	{
    346. 

  346. 		0, 36, 73, 109, 146, 182, 219, 255
    347. 

  347. 	},
    348. 

  348. 	{
    349. 

  349. 		0, 255, 28, 227, 56, 199, 84, 171, 113, 142
    350. 

  350. 	},
    351. 

  351. 	{
    352. 

  352. 		0, 255, 69, 186, 23, 232, 92, 163, 46, 209, 116, 139
    353. 

  353. 	},
    354. 

  354. 	{
    355. 

  355. 		0, 17, 34, 51, 68, 85, 102, 119, 136, 153, 170, 187, 204, 221, 238, 255
    356. 

  356. 	},
    357. 

  357. 	{
    358. 

  358. 		0, 255, 67, 188, 13, 242, 80, 175, 27, 228, 94, 161, 40, 215, 107, 148,
    359. 

  359. 		54, 201, 121, 134
    360. 

  360. 	},
    361. 

  361. 	{
    362. 

  362. 		0, 255, 33, 222, 66, 189, 99, 156, 11, 244, 44, 211, 77, 178, 110, 145,
    363. 

  363. 		22, 233, 55, 200, 88, 167, 121, 134
    364. 

  364. 	},
    365. 

  365. 	{
    366. 

  366. 		0, 8, 16, 24, 33, 41, 49, 57, 66, 74, 82, 90, 99, 107, 115, 123,
    367. 

  367. 		132, 140, 148, 156, 165, 173, 181, 189, 198, 206, 214, 222, 231, 239, 247, 255
    368. 

  368. 	},
    369. 

  369. 	{
    370. 

  370. 		0, 255, 32, 223, 65, 190, 97, 158, 6, 249, 39, 216, 71, 184, 104, 151,
    371. 

  371. 		13, 242, 45, 210, 78, 177, 110, 145, 19, 236, 52, 203, 84, 171, 117, 138,
    372. 

  372. 		26, 229, 58, 197, 91, 164, 123, 132
    373. 

  373. 	},
    374. 

  374. 	{
    375. 

  375. 		0, 255, 16, 239, 32, 223, 48, 207, 65, 190, 81, 174, 97, 158, 113, 142,
    376. 

  376. 		5, 250, 21, 234, 38, 217, 54, 201, 70, 185, 86, 169, 103, 152, 119, 136,
    377. 

  377. 		11, 244, 27, 228, 43, 212, 59, 196, 76, 179, 92, 163, 108, 147, 124, 131
    378. 

  378. 	},
    379. 

  379. 	{
    380. 

  380. 		0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60,
    381. 

  381. 		65, 69, 73, 77, 81, 85, 89, 93, 97, 101, 105, 109, 113, 117, 121, 125,
    382. 

  382. 		130, 134, 138, 142, 146, 150, 154, 158, 162, 166, 170, 174, 178, 182, 186, 190,
    383. 

  383. 		195, 199, 203, 207, 211, 215, 219, 223, 227, 231, 235, 239, 243, 247, 251, 255
    384. 

  384. 	},
    385. 

  385. 	{
    386. 

  386. 		0, 255, 16, 239, 32, 223, 48, 207, 64, 191, 80, 175, 96, 159, 112, 143,
    387. 

  387. 		3, 252, 19, 236, 35, 220, 51, 204, 67, 188, 83, 172, 100, 155, 116, 139,
    388. 

  388. 		6, 249, 22, 233, 38, 217, 54, 201, 71, 184, 87, 168, 103, 152, 119, 136,
    389. 

  389. 		9, 246, 25, 230, 42, 213, 58, 197, 74, 181, 90, 165, 106, 149, 122, 133,
    390. 

  390. 		13, 242, 29, 226, 45, 210, 61, 194, 77, 178, 93, 162, 109, 146, 125, 130
    391. 

  391. 	},
    392. 

  392. 	{
    393. 

  393. 		0, 255, 8, 247, 16, 239, 24, 231, 32, 223, 40, 215, 48, 207, 56, 199,
    394. 

  394. 		64, 191, 72, 183, 80, 175, 88, 167, 96, 159, 104, 151, 112, 143, 120, 135,
    395. 

  395. 		2, 253, 10, 245, 18, 237, 26, 229, 35, 220, 43, 212, 51, 204, 59, 196,
    396. 

  396. 		67, 188, 75, 180, 83, 172, 91, 164, 99, 156, 107, 148, 115, 140, 123, 132,
    397. 

  397. 		5, 250, 13, 242, 21, 234, 29, 226, 37, 218, 45, 210, 53, 202, 61, 194,
    398. 

  398. 		70, 185, 78, 177, 86, 169, 94, 161, 102, 153, 110, 145, 118, 137, 126, 129
    399. 

  399. 	},
    400. 

  400. 	{
    401. 

  401. 		0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30,
    402. 

  402. 		32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62,
    403. 

  403. 		64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94,
    404. 

  404. 		96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126,
    405. 

  405. 		129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, 151, 153, 155, 157, 159,
    406. 

  406. 		161, 163, 165, 167, 169, 171, 173, 175, 177, 179, 181, 183, 185, 187, 189, 191,
    407. 

  407. 		193, 195, 197, 199, 201, 203, 205, 207, 209, 211, 213, 215, 217, 219, 221, 223,
    408. 

  408. 		225, 227, 229, 231, 233, 235, 237, 239, 241, 243, 245, 247, 249, 251, 253, 255
    409. 

  409. 	},
    410. 

  410. 	{
    411. 

  411. 		0, 255, 8, 247, 16, 239, 24, 231, 32, 223, 40, 215, 48, 207, 56, 199,
    412. 

  412. 		64, 191, 72, 183, 80, 175, 88, 167, 96, 159, 104, 151, 112, 143, 120, 135,
    413. 

  413. 		1, 254, 9, 246, 17, 238, 25, 230, 33, 222, 41, 214, 49, 206, 57, 198,
    414. 

  414. 		65, 190, 73, 182, 81, 174, 89, 166, 97, 158, 105, 150, 113, 142, 121, 134,
    415. 

  415. 		3, 252, 11, 244, 19, 236, 27, 228, 35, 220, 43, 212, 51, 204, 59, 196,
    416. 

  416. 		67, 188, 75, 180, 83, 172, 91, 164, 99, 156, 107, 148, 115, 140, 123, 132,
    417. 

  417. 		4, 251, 12, 243, 20, 235, 28, 227, 36, 219, 44, 211, 52, 203, 60, 195,
    418. 

  418. 		68, 187, 76, 179, 84, 171, 92, 163, 100, 155, 108, 147, 116, 139, 124, 131,
    419. 

  419. 		6, 249, 14, 241, 22, 233, 30, 225, 38, 217, 46, 209, 54, 201, 62, 193,
    420. 

  420. 		70, 185, 78, 177, 86, 169, 94, 161, 102, 153, 110, 145, 118, 137, 126, 129
    421. 

  421. 	},
    422. 

  422. 	{
    423. 

  423. 		0, 255, 4, 251, 8, 247, 12, 243, 16, 239, 20, 235, 24, 231, 28, 227,
    424. 

  424. 		32, 223, 36, 219, 40, 215, 44, 211, 48, 207, 52, 203, 56, 199, 60, 195,
    425. 

  425. 		64, 191, 68, 187, 72, 183, 76, 179, 80, 175, 84, 171, 88, 167, 92, 163,
    426. 

  426. 		96, 159, 100, 155, 104, 151, 108, 147, 112, 143, 116, 139, 120, 135, 124, 131,
    427. 

  427. 		1, 254, 5, 250, 9, 246, 13, 242, 17, 238, 21, 234, 25, 230, 29, 226,
    428. 

  428. 		33, 222, 37, 218, 41, 214, 45, 210, 49, 206, 53, 202, 57, 198, 61, 194,
    429. 

  429. 		65, 190, 69, 186, 73, 182, 77, 178, 81, 174, 85, 170, 89, 166, 93, 162,
    430. 

  430. 		97, 158, 101, 154, 105, 150, 109, 146, 113, 142, 117, 138, 121, 134, 125, 130,
    431. 

  431. 		2, 253, 6, 249, 10, 245, 14, 241, 18, 237, 22, 233, 26, 229, 30, 225,
    432. 

  432. 		34, 221, 38, 217, 42, 213, 46, 209, 50, 205, 54, 201, 58, 197, 62, 193,
    433. 

  433. 		66, 189, 70, 185, 74, 181, 78, 177, 82, 173, 86, 169, 90, 165, 94, 161,
    434. 

  434. 		98, 157, 102, 153, 106, 149, 110, 145, 114, 141, 118, 137, 122, 133, 126, 129
    435. 

  435. 	},
    436. 

  436. 	{
    437. 

  437. 		0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
    438. 

  438. 		16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
    439. 

  439. 		32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
    440. 

  440. 		48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
    441. 

  441. 		64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
    442. 

  442. 		80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
    443. 

  443. 		96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,
    444. 

  444. 		112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127,
    445. 

  445. 		128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
    446. 

  446. 		144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
    447. 

  447. 		160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
    448. 

  448. 		176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191,
    449. 

  449. 		192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207,
    450. 

  450. 		208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223,
    451. 

  451. 		224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
    452. 

  452. 		240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255
    453. 

  453. 	}
    454. 

  454. };
    455. 

  455. 

  456. // The quant_mode_table[integer_count/2][bits] gives us the quantization level for a given integer
    457. 

  457. // count and number of bits that the integer may fit into.
    458. 

  458. const int8_t quant_mode_table[10][128] {
    459. 

  459.     {
    460. 

  460.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    461. 

  461.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    462. 

  462.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    463. 

  463.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    464. 

  464.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    465. 

  465.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    466. 

  466.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    467. 

  467.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
    468. 

  468.     },
    469. 

  469.     {
    470. 

  470.          -1, -1,  0,  0,  2,  3,  5,  6,  8,  9, 11, 12, 14, 15, 17, 18,
    471. 

  471.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    472. 

  472.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    473. 

  473.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    474. 

  474.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    475. 

  475.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    476. 

  476.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    477. 

  477.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20
    478. 

  478.     },
    479. 

  479.     {
    480. 

  480.          -1, -1, -1, -1,  0,  0,  0,  1,  2,  2,  3,  4,  5,  5,  6,  7,
    481. 

  481.           8,  8,  9, 10, 11, 11, 12, 13, 14, 14, 15, 16, 17, 17, 18, 19,
    482. 

  482.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    483. 

  483.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    484. 

  484.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    485. 

  485.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    486. 

  486.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    487. 

  487.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20
    488. 

  488.     },
    489. 

  489.     {
    490. 

  490.          -1, -1, -1, -1, -1, -1,  0,  0,  0,  0,  1,  1,  2,  2,  3,  3,
    491. 

  491.           4,  4,  5,  5,  6,  6,  7,  7,  8,  8,  9,  9, 10, 10, 11, 11,
    492. 

  492.          12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19,
    493. 

  493.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    494. 

  494.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    495. 

  495.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    496. 

  496.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    497. 

  497.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20
    498. 

  498.     },
    499. 

  499.     {
    500. 

  500.          -1, -1, -1, -1, -1, -1, -1, -1,  0,  0,  0,  0,  0,  1,  1,  1,
    501. 

  501.           2,  2,  2,  3,  3,  4,  4,  4,  5,  5,  5,  6,  6,  7,  7,  7,
    502. 

  502.           8,  8,  8,  9,  9, 10, 10, 10, 11, 11, 11, 12, 12, 13, 13, 13,
    503. 

  503.          14, 14, 14, 15, 15, 16, 16, 16, 17, 17, 17, 18, 18, 19, 19, 19,
    504. 

  504.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    505. 

  505.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    506. 

  506.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    507. 

  507.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20
    508. 

  508.     },
    509. 

  509.     {
    510. 

  510.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  0,  0,  0,  0,  0,  0,
    511. 

  511.           1,  1,  1,  1,  2,  2,  2,  2,  3,  3,  4,  4,  4,  4,  5,  5,
    512. 

  512.           5,  5,  6,  6,  7,  7,  7,  7,  8,  8,  8,  8,  9,  9, 10, 10,
    513. 

  513.          10, 10, 11, 11, 11, 11, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14,
    514. 

  514.          15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 19, 19, 19, 19,
    515. 

  515.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    516. 

  516.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    517. 

  517.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20
    518. 

  518.     },
    519. 

  519.     {
    520. 

  520.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  0,  0,  0,  0,
    521. 

  521.           0,  0,  0,  0,  1,  1,  1,  1,  2,  2,  2,  2,  3,  3,  3,  3,
    522. 

  522.           4,  4,  4,  4,  5,  5,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,
    523. 

  523.           8,  8,  8,  8,  9,  9,  9,  9, 10, 10, 10, 10, 11, 11, 11, 11,
    524. 

  524.          12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15,
    525. 

  525.          16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19,
    526. 

  526.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
    527. 

  527.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20
    528. 

  528.     },
    529. 

  529.     {
    530. 

  530.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  0,  0,
    531. 

  531.           0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  2,  2,  2,  2,
    532. 

  532.           2,  3,  3,  3,  3,  4,  4,  4,  4,  4,  5,  5,  5,  5,  5,  6,
    533. 

  533.           6,  6,  6,  7,  7,  7,  7,  7,  8,  8,  8,  8,  8,  9,  9,  9,
    534. 

  534.           9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13,
    535. 

  535.          13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16,
    536. 

  536.          16, 16, 17, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 19,
    537. 

  537.          20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20
    538. 

  538.     },
    539. 

  539.     {
    540. 

  540.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    541. 

  541.           0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  1,
    542. 

  542.           2,  2,  2,  2,  2,  2,  3,  3,  3,  3,  4,  4,  4,  4,  4,  4,
    543. 

  543.           5,  5,  5,  5,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,  7,  7,
    544. 

  544.           8,  8,  8,  8,  8,  8,  9,  9,  9,  9, 10, 10, 10, 10, 10, 10,
    545. 

  545.          11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13,
    546. 

  546.          14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16,
    547. 

  547.          17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19
    548. 

  548.     },
    549. 

  549.     {
    550. 

  550.          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    551. 

  551.          -1, -1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,
    552. 

  552.           1,  1,  1,  1,  2,  2,  2,  2,  2,  2,  3,  3,  3,  3,  3,  4,
    553. 

  553.           4,  4,  4,  4,  4,  4,  5,  5,  5,  5,  5,  5,  6,  6,  6,  6,
    554. 

  554.           6,  7,  7,  7,  7,  7,  7,  7,  8,  8,  8,  8,  8,  8,  9,  9,
    555. 

  555.           9,  9,  9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11,
    556. 

  556.          12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14,
    557. 

  557.          14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 17, 17
    558. 

  558.     }
    559. 

  559. };
    560.