t4.h 13 KB

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  1. /*
  2. * Copyright (c) 1988-1997 Sam Leffler
  3. * Copyright (c) 1991-1997 Silicon Graphics, Inc.
  4. *
  5. * Permission to use, copy, modify, distribute, and sell this software and
  6. * its documentation for any purpose is hereby granted without fee, provided
  7. * that (i) the above copyright notices and this permission notice appear in
  8. * all copies of the software and related documentation, and (ii) the names of
  9. * Sam Leffler and Silicon Graphics may not be used in any advertising or
  10. * publicity relating to the software without the specific, prior written
  11. * permission of Sam Leffler and Silicon Graphics.
  12. *
  13. * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  14. * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  15. * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  16. *
  17. * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
  18. * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
  19. * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  20. * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  21. * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  22. * OF THIS SOFTWARE.
  23. */
  24. #ifndef _T4_
  25. #define _T4_
  26. /*
  27. * CCITT T.4 1D Huffman runlength codes and
  28. * related definitions. Given the small sizes
  29. * of these tables it does not seem
  30. * worthwhile to make code & length 8 bits.
  31. */
  32. typedef struct tableentry
  33. {
  34. unsigned short length; /* bit length of g3 code */
  35. unsigned short code; /* g3 code */
  36. short runlen; /* run length in bits */
  37. } tableentry;
  38. #define EOL 0x001 /* EOL code value - 0000 0000 0000 1 */
  39. /* status values returned instead of a run length */
  40. #define G3CODE_EOL -1 /* NB: ACT_EOL - ACT_WRUNT */
  41. #define G3CODE_INVALID -2 /* NB: ACT_INVALID - ACT_WRUNT */
  42. #define G3CODE_EOF -3 /* end of input data */
  43. #define G3CODE_INCOMP -4 /* incomplete run code */
  44. /*
  45. * Note that these tables are ordered such that the
  46. * index into the table is known to be either the
  47. * run length, or (run length / 64) + a fixed offset.
  48. *
  49. * NB: The G3CODE_INVALID entries are only used
  50. * during state generation (see mkg3states.c).
  51. */
  52. #ifdef G3CODES
  53. const tableentry TIFFFaxWhiteCodes[] = {
  54. {8, 0x35, 0}, /* 0011 0101 */
  55. {6, 0x7, 1}, /* 0001 11 */
  56. {4, 0x7, 2}, /* 0111 */
  57. {4, 0x8, 3}, /* 1000 */
  58. {4, 0xB, 4}, /* 1011 */
  59. {4, 0xC, 5}, /* 1100 */
  60. {4, 0xE, 6}, /* 1110 */
  61. {4, 0xF, 7}, /* 1111 */
  62. {5, 0x13, 8}, /* 1001 1 */
  63. {5, 0x14, 9}, /* 1010 0 */
  64. {5, 0x7, 10}, /* 0011 1 */
  65. {5, 0x8, 11}, /* 0100 0 */
  66. {6, 0x8, 12}, /* 0010 00 */
  67. {6, 0x3, 13}, /* 0000 11 */
  68. {6, 0x34, 14}, /* 1101 00 */
  69. {6, 0x35, 15}, /* 1101 01 */
  70. {6, 0x2A, 16}, /* 1010 10 */
  71. {6, 0x2B, 17}, /* 1010 11 */
  72. {7, 0x27, 18}, /* 0100 111 */
  73. {7, 0xC, 19}, /* 0001 100 */
  74. {7, 0x8, 20}, /* 0001 000 */
  75. {7, 0x17, 21}, /* 0010 111 */
  76. {7, 0x3, 22}, /* 0000 011 */
  77. {7, 0x4, 23}, /* 0000 100 */
  78. {7, 0x28, 24}, /* 0101 000 */
  79. {7, 0x2B, 25}, /* 0101 011 */
  80. {7, 0x13, 26}, /* 0010 011 */
  81. {7, 0x24, 27}, /* 0100 100 */
  82. {7, 0x18, 28}, /* 0011 000 */
  83. {8, 0x2, 29}, /* 0000 0010 */
  84. {8, 0x3, 30}, /* 0000 0011 */
  85. {8, 0x1A, 31}, /* 0001 1010 */
  86. {8, 0x1B, 32}, /* 0001 1011 */
  87. {8, 0x12, 33}, /* 0001 0010 */
  88. {8, 0x13, 34}, /* 0001 0011 */
  89. {8, 0x14, 35}, /* 0001 0100 */
  90. {8, 0x15, 36}, /* 0001 0101 */
  91. {8, 0x16, 37}, /* 0001 0110 */
  92. {8, 0x17, 38}, /* 0001 0111 */
  93. {8, 0x28, 39}, /* 0010 1000 */
  94. {8, 0x29, 40}, /* 0010 1001 */
  95. {8, 0x2A, 41}, /* 0010 1010 */
  96. {8, 0x2B, 42}, /* 0010 1011 */
  97. {8, 0x2C, 43}, /* 0010 1100 */
  98. {8, 0x2D, 44}, /* 0010 1101 */
  99. {8, 0x4, 45}, /* 0000 0100 */
  100. {8, 0x5, 46}, /* 0000 0101 */
  101. {8, 0xA, 47}, /* 0000 1010 */
  102. {8, 0xB, 48}, /* 0000 1011 */
  103. {8, 0x52, 49}, /* 0101 0010 */
  104. {8, 0x53, 50}, /* 0101 0011 */
  105. {8, 0x54, 51}, /* 0101 0100 */
  106. {8, 0x55, 52}, /* 0101 0101 */
  107. {8, 0x24, 53}, /* 0010 0100 */
  108. {8, 0x25, 54}, /* 0010 0101 */
  109. {8, 0x58, 55}, /* 0101 1000 */
  110. {8, 0x59, 56}, /* 0101 1001 */
  111. {8, 0x5A, 57}, /* 0101 1010 */
  112. {8, 0x5B, 58}, /* 0101 1011 */
  113. {8, 0x4A, 59}, /* 0100 1010 */
  114. {8, 0x4B, 60}, /* 0100 1011 */
  115. {8, 0x32, 61}, /* 0011 0010 */
  116. {8, 0x33, 62}, /* 0011 0011 */
  117. {8, 0x34, 63}, /* 0011 0100 */
  118. {5, 0x1B, 64}, /* 1101 1 */
  119. {5, 0x12, 128}, /* 1001 0 */
  120. {6, 0x17, 192}, /* 0101 11 */
  121. {7, 0x37, 256}, /* 0110 111 */
  122. {8, 0x36, 320}, /* 0011 0110 */
  123. {8, 0x37, 384}, /* 0011 0111 */
  124. {8, 0x64, 448}, /* 0110 0100 */
  125. {8, 0x65, 512}, /* 0110 0101 */
  126. {8, 0x68, 576}, /* 0110 1000 */
  127. {8, 0x67, 640}, /* 0110 0111 */
  128. {9, 0xCC, 704}, /* 0110 0110 0 */
  129. {9, 0xCD, 768}, /* 0110 0110 1 */
  130. {9, 0xD2, 832}, /* 0110 1001 0 */
  131. {9, 0xD3, 896}, /* 0110 1001 1 */
  132. {9, 0xD4, 960}, /* 0110 1010 0 */
  133. {9, 0xD5, 1024}, /* 0110 1010 1 */
  134. {9, 0xD6, 1088}, /* 0110 1011 0 */
  135. {9, 0xD7, 1152}, /* 0110 1011 1 */
  136. {9, 0xD8, 1216}, /* 0110 1100 0 */
  137. {9, 0xD9, 1280}, /* 0110 1100 1 */
  138. {9, 0xDA, 1344}, /* 0110 1101 0 */
  139. {9, 0xDB, 1408}, /* 0110 1101 1 */
  140. {9, 0x98, 1472}, /* 0100 1100 0 */
  141. {9, 0x99, 1536}, /* 0100 1100 1 */
  142. {9, 0x9A, 1600}, /* 0100 1101 0 */
  143. {6, 0x18, 1664}, /* 0110 00 */
  144. {9, 0x9B, 1728}, /* 0100 1101 1 */
  145. {11, 0x8, 1792}, /* 0000 0001 000 */
  146. {11, 0xC, 1856}, /* 0000 0001 100 */
  147. {11, 0xD, 1920}, /* 0000 0001 101 */
  148. {12, 0x12, 1984}, /* 0000 0001 0010 */
  149. {12, 0x13, 2048}, /* 0000 0001 0011 */
  150. {12, 0x14, 2112}, /* 0000 0001 0100 */
  151. {12, 0x15, 2176}, /* 0000 0001 0101 */
  152. {12, 0x16, 2240}, /* 0000 0001 0110 */
  153. {12, 0x17, 2304}, /* 0000 0001 0111 */
  154. {12, 0x1C, 2368}, /* 0000 0001 1100 */
  155. {12, 0x1D, 2432}, /* 0000 0001 1101 */
  156. {12, 0x1E, 2496}, /* 0000 0001 1110 */
  157. {12, 0x1F, 2560}, /* 0000 0001 1111 */
  158. {12, 0x1, G3CODE_EOL}, /* 0000 0000 0001 */
  159. {9, 0x1, G3CODE_INVALID}, /* 0000 0000 1 */
  160. {10, 0x1, G3CODE_INVALID}, /* 0000 0000 01 */
  161. {11, 0x1, G3CODE_INVALID}, /* 0000 0000 001 */
  162. {12, 0x0, G3CODE_INVALID}, /* 0000 0000 0000 */
  163. };
  164. const tableentry TIFFFaxBlackCodes[] = {
  165. {10, 0x37, 0}, /* 0000 1101 11 */
  166. {3, 0x2, 1}, /* 010 */
  167. {2, 0x3, 2}, /* 11 */
  168. {2, 0x2, 3}, /* 10 */
  169. {3, 0x3, 4}, /* 011 */
  170. {4, 0x3, 5}, /* 0011 */
  171. {4, 0x2, 6}, /* 0010 */
  172. {5, 0x3, 7}, /* 0001 1 */
  173. {6, 0x5, 8}, /* 0001 01 */
  174. {6, 0x4, 9}, /* 0001 00 */
  175. {7, 0x4, 10}, /* 0000 100 */
  176. {7, 0x5, 11}, /* 0000 101 */
  177. {7, 0x7, 12}, /* 0000 111 */
  178. {8, 0x4, 13}, /* 0000 0100 */
  179. {8, 0x7, 14}, /* 0000 0111 */
  180. {9, 0x18, 15}, /* 0000 1100 0 */
  181. {10, 0x17, 16}, /* 0000 0101 11 */
  182. {10, 0x18, 17}, /* 0000 0110 00 */
  183. {10, 0x8, 18}, /* 0000 0010 00 */
  184. {11, 0x67, 19}, /* 0000 1100 111 */
  185. {11, 0x68, 20}, /* 0000 1101 000 */
  186. {11, 0x6C, 21}, /* 0000 1101 100 */
  187. {11, 0x37, 22}, /* 0000 0110 111 */
  188. {11, 0x28, 23}, /* 0000 0101 000 */
  189. {11, 0x17, 24}, /* 0000 0010 111 */
  190. {11, 0x18, 25}, /* 0000 0011 000 */
  191. {12, 0xCA, 26}, /* 0000 1100 1010 */
  192. {12, 0xCB, 27}, /* 0000 1100 1011 */
  193. {12, 0xCC, 28}, /* 0000 1100 1100 */
  194. {12, 0xCD, 29}, /* 0000 1100 1101 */
  195. {12, 0x68, 30}, /* 0000 0110 1000 */
  196. {12, 0x69, 31}, /* 0000 0110 1001 */
  197. {12, 0x6A, 32}, /* 0000 0110 1010 */
  198. {12, 0x6B, 33}, /* 0000 0110 1011 */
  199. {12, 0xD2, 34}, /* 0000 1101 0010 */
  200. {12, 0xD3, 35}, /* 0000 1101 0011 */
  201. {12, 0xD4, 36}, /* 0000 1101 0100 */
  202. {12, 0xD5, 37}, /* 0000 1101 0101 */
  203. {12, 0xD6, 38}, /* 0000 1101 0110 */
  204. {12, 0xD7, 39}, /* 0000 1101 0111 */
  205. {12, 0x6C, 40}, /* 0000 0110 1100 */
  206. {12, 0x6D, 41}, /* 0000 0110 1101 */
  207. {12, 0xDA, 42}, /* 0000 1101 1010 */
  208. {12, 0xDB, 43}, /* 0000 1101 1011 */
  209. {12, 0x54, 44}, /* 0000 0101 0100 */
  210. {12, 0x55, 45}, /* 0000 0101 0101 */
  211. {12, 0x56, 46}, /* 0000 0101 0110 */
  212. {12, 0x57, 47}, /* 0000 0101 0111 */
  213. {12, 0x64, 48}, /* 0000 0110 0100 */
  214. {12, 0x65, 49}, /* 0000 0110 0101 */
  215. {12, 0x52, 50}, /* 0000 0101 0010 */
  216. {12, 0x53, 51}, /* 0000 0101 0011 */
  217. {12, 0x24, 52}, /* 0000 0010 0100 */
  218. {12, 0x37, 53}, /* 0000 0011 0111 */
  219. {12, 0x38, 54}, /* 0000 0011 1000 */
  220. {12, 0x27, 55}, /* 0000 0010 0111 */
  221. {12, 0x28, 56}, /* 0000 0010 1000 */
  222. {12, 0x58, 57}, /* 0000 0101 1000 */
  223. {12, 0x59, 58}, /* 0000 0101 1001 */
  224. {12, 0x2B, 59}, /* 0000 0010 1011 */
  225. {12, 0x2C, 60}, /* 0000 0010 1100 */
  226. {12, 0x5A, 61}, /* 0000 0101 1010 */
  227. {12, 0x66, 62}, /* 0000 0110 0110 */
  228. {12, 0x67, 63}, /* 0000 0110 0111 */
  229. {10, 0xF, 64}, /* 0000 0011 11 */
  230. {12, 0xC8, 128}, /* 0000 1100 1000 */
  231. {12, 0xC9, 192}, /* 0000 1100 1001 */
  232. {12, 0x5B, 256}, /* 0000 0101 1011 */
  233. {12, 0x33, 320}, /* 0000 0011 0011 */
  234. {12, 0x34, 384}, /* 0000 0011 0100 */
  235. {12, 0x35, 448}, /* 0000 0011 0101 */
  236. {13, 0x6C, 512}, /* 0000 0011 0110 0 */
  237. {13, 0x6D, 576}, /* 0000 0011 0110 1 */
  238. {13, 0x4A, 640}, /* 0000 0010 0101 0 */
  239. {13, 0x4B, 704}, /* 0000 0010 0101 1 */
  240. {13, 0x4C, 768}, /* 0000 0010 0110 0 */
  241. {13, 0x4D, 832}, /* 0000 0010 0110 1 */
  242. {13, 0x72, 896}, /* 0000 0011 1001 0 */
  243. {13, 0x73, 960}, /* 0000 0011 1001 1 */
  244. {13, 0x74, 1024}, /* 0000 0011 1010 0 */
  245. {13, 0x75, 1088}, /* 0000 0011 1010 1 */
  246. {13, 0x76, 1152}, /* 0000 0011 1011 0 */
  247. {13, 0x77, 1216}, /* 0000 0011 1011 1 */
  248. {13, 0x52, 1280}, /* 0000 0010 1001 0 */
  249. {13, 0x53, 1344}, /* 0000 0010 1001 1 */
  250. {13, 0x54, 1408}, /* 0000 0010 1010 0 */
  251. {13, 0x55, 1472}, /* 0000 0010 1010 1 */
  252. {13, 0x5A, 1536}, /* 0000 0010 1101 0 */
  253. {13, 0x5B, 1600}, /* 0000 0010 1101 1 */
  254. {13, 0x64, 1664}, /* 0000 0011 0010 0 */
  255. {13, 0x65, 1728}, /* 0000 0011 0010 1 */
  256. {11, 0x8, 1792}, /* 0000 0001 000 */
  257. {11, 0xC, 1856}, /* 0000 0001 100 */
  258. {11, 0xD, 1920}, /* 0000 0001 101 */
  259. {12, 0x12, 1984}, /* 0000 0001 0010 */
  260. {12, 0x13, 2048}, /* 0000 0001 0011 */
  261. {12, 0x14, 2112}, /* 0000 0001 0100 */
  262. {12, 0x15, 2176}, /* 0000 0001 0101 */
  263. {12, 0x16, 2240}, /* 0000 0001 0110 */
  264. {12, 0x17, 2304}, /* 0000 0001 0111 */
  265. {12, 0x1C, 2368}, /* 0000 0001 1100 */
  266. {12, 0x1D, 2432}, /* 0000 0001 1101 */
  267. {12, 0x1E, 2496}, /* 0000 0001 1110 */
  268. {12, 0x1F, 2560}, /* 0000 0001 1111 */
  269. {12, 0x1, G3CODE_EOL}, /* 0000 0000 0001 */
  270. {9, 0x1, G3CODE_INVALID}, /* 0000 0000 1 */
  271. {10, 0x1, G3CODE_INVALID}, /* 0000 0000 01 */
  272. {11, 0x1, G3CODE_INVALID}, /* 0000 0000 001 */
  273. {12, 0x0, G3CODE_INVALID}, /* 0000 0000 0000 */
  274. };
  275. #else
  276. extern const tableentry TIFFFaxWhiteCodes[];
  277. extern const tableentry TIFFFaxBlackCodes[];
  278. #endif
  279. #endif /* _T4_ */