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1 | ||
2 | /* | |
3 | * Copyright (c) 1988-1997 Sam Leffler | |
4 | * Copyright (c) 1991-1997 Silicon Graphics, Inc. | |
5 | * | |
6 | * Permission to use, copy, modify, distribute, and sell this software and | |
7 | * its documentation for any purpose is hereby granted without fee, provided | |
8 | * that (i) the above copyright notices and this permission notice appear in | |
9 | * all copies of the software and related documentation, and (ii) the names of | |
10 | * Sam Leffler and Silicon Graphics may not be used in any advertising or | |
11 | * publicity relating to the software without the specific, prior written | |
12 | * permission of Sam Leffler and Silicon Graphics. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, | |
15 | * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY | |
16 | * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. | |
17 | * | |
18 | * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR | |
19 | * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, | |
20 | * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
21 | * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF | |
22 | * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
23 | * OF THIS SOFTWARE. | |
24 | */ | |
25 | ||
26 | #ifndef _T4_ | |
27 | #define _T4_ | |
28 | /* | |
29 | * CCITT T.4 1D Huffman runlength codes and | |
30 | * related definitions. Given the small sizes | |
31 | * of these tables it does not seem | |
32 | * worthwhile to make code & length 8 bits. | |
33 | */ | |
34 | typedef struct tableentry { | |
35 | unsigned short length; /* bit length of g3 code */ | |
36 | unsigned short code; /* g3 code */ | |
37 | short runlen; /* run length in bits */ | |
38 | } tableentry; | |
39 | ||
40 | #define EOL 0x001 /* EOL code value - 0000 0000 0000 1 */ | |
41 | ||
42 | /* status values returned instead of a run length */ | |
43 | #define G3CODE_EOL -1 /* NB: ACT_EOL - ACT_WRUNT */ | |
44 | #define G3CODE_INVALID -2 /* NB: ACT_INVALID - ACT_WRUNT */ | |
45 | #define G3CODE_EOF -3 /* end of input data */ | |
46 | #define G3CODE_INCOMP -4 /* incomplete run code */ | |
47 | ||
48 | /* | |
49 | * Note that these tables are ordered such that the | |
50 | * index into the table is known to be either the | |
51 | * run length, or (run length / 64) + a fixed offset. | |
52 | * | |
53 | * NB: The G3CODE_INVALID entries are only used | |
54 | * during state generation (see mkg3states.c). | |
55 | */ | |
56 | #ifdef G3CODES | |
57 | const tableentry TIFFFaxWhiteCodes[] = { | |
58 | { 8, 0x35, 0 }, /* 0011 0101 */ | |
59 | { 6, 0x7, 1 }, /* 0001 11 */ | |
60 | { 4, 0x7, 2 }, /* 0111 */ | |
61 | { 4, 0x8, 3 }, /* 1000 */ | |
62 | { 4, 0xB, 4 }, /* 1011 */ | |
63 | { 4, 0xC, 5 }, /* 1100 */ | |
64 | { 4, 0xE, 6 }, /* 1110 */ | |
65 | { 4, 0xF, 7 }, /* 1111 */ | |
66 | { 5, 0x13, 8 }, /* 1001 1 */ | |
67 | { 5, 0x14, 9 }, /* 1010 0 */ | |
68 | { 5, 0x7, 10 }, /* 0011 1 */ | |
69 | { 5, 0x8, 11 }, /* 0100 0 */ | |
70 | { 6, 0x8, 12 }, /* 0010 00 */ | |
71 | { 6, 0x3, 13 }, /* 0000 11 */ | |
72 | { 6, 0x34, 14 }, /* 1101 00 */ | |
73 | { 6, 0x35, 15 }, /* 1101 01 */ | |
74 | { 6, 0x2A, 16 }, /* 1010 10 */ | |
75 | { 6, 0x2B, 17 }, /* 1010 11 */ | |
76 | { 7, 0x27, 18 }, /* 0100 111 */ | |
77 | { 7, 0xC, 19 }, /* 0001 100 */ | |
78 | { 7, 0x8, 20 }, /* 0001 000 */ | |
79 | { 7, 0x17, 21 }, /* 0010 111 */ | |
80 | { 7, 0x3, 22 }, /* 0000 011 */ | |
81 | { 7, 0x4, 23 }, /* 0000 100 */ | |
82 | { 7, 0x28, 24 }, /* 0101 000 */ | |
83 | { 7, 0x2B, 25 }, /* 0101 011 */ | |
84 | { 7, 0x13, 26 }, /* 0010 011 */ | |
85 | { 7, 0x24, 27 }, /* 0100 100 */ | |
86 | { 7, 0x18, 28 }, /* 0011 000 */ | |
87 | { 8, 0x2, 29 }, /* 0000 0010 */ | |
88 | { 8, 0x3, 30 }, /* 0000 0011 */ | |
89 | { 8, 0x1A, 31 }, /* 0001 1010 */ | |
90 | { 8, 0x1B, 32 }, /* 0001 1011 */ | |
91 | { 8, 0x12, 33 }, /* 0001 0010 */ | |
92 | { 8, 0x13, 34 }, /* 0001 0011 */ | |
93 | { 8, 0x14, 35 }, /* 0001 0100 */ | |
94 | { 8, 0x15, 36 }, /* 0001 0101 */ | |
95 | { 8, 0x16, 37 }, /* 0001 0110 */ | |
96 | { 8, 0x17, 38 }, /* 0001 0111 */ | |
97 | { 8, 0x28, 39 }, /* 0010 1000 */ | |
98 | { 8, 0x29, 40 }, /* 0010 1001 */ | |
99 | { 8, 0x2A, 41 }, /* 0010 1010 */ | |
100 | { 8, 0x2B, 42 }, /* 0010 1011 */ | |
101 | { 8, 0x2C, 43 }, /* 0010 1100 */ | |
102 | { 8, 0x2D, 44 }, /* 0010 1101 */ | |
103 | { 8, 0x4, 45 }, /* 0000 0100 */ | |
104 | { 8, 0x5, 46 }, /* 0000 0101 */ | |
105 | { 8, 0xA, 47 }, /* 0000 1010 */ | |
106 | { 8, 0xB, 48 }, /* 0000 1011 */ | |
107 | { 8, 0x52, 49 }, /* 0101 0010 */ | |
108 | { 8, 0x53, 50 }, /* 0101 0011 */ | |
109 | { 8, 0x54, 51 }, /* 0101 0100 */ | |
110 | { 8, 0x55, 52 }, /* 0101 0101 */ | |
111 | { 8, 0x24, 53 }, /* 0010 0100 */ | |
112 | { 8, 0x25, 54 }, /* 0010 0101 */ | |
113 | { 8, 0x58, 55 }, /* 0101 1000 */ | |
114 | { 8, 0x59, 56 }, /* 0101 1001 */ | |
115 | { 8, 0x5A, 57 }, /* 0101 1010 */ | |
116 | { 8, 0x5B, 58 }, /* 0101 1011 */ | |
117 | { 8, 0x4A, 59 }, /* 0100 1010 */ | |
118 | { 8, 0x4B, 60 }, /* 0100 1011 */ | |
119 | { 8, 0x32, 61 }, /* 0011 0010 */ | |
120 | { 8, 0x33, 62 }, /* 0011 0011 */ | |
121 | { 8, 0x34, 63 }, /* 0011 0100 */ | |
122 | { 5, 0x1B, 64 }, /* 1101 1 */ | |
123 | { 5, 0x12, 128 }, /* 1001 0 */ | |
124 | { 6, 0x17, 192 }, /* 0101 11 */ | |
125 | { 7, 0x37, 256 }, /* 0110 111 */ | |
126 | { 8, 0x36, 320 }, /* 0011 0110 */ | |
127 | { 8, 0x37, 384 }, /* 0011 0111 */ | |
128 | { 8, 0x64, 448 }, /* 0110 0100 */ | |
129 | { 8, 0x65, 512 }, /* 0110 0101 */ | |
130 | { 8, 0x68, 576 }, /* 0110 1000 */ | |
131 | { 8, 0x67, 640 }, /* 0110 0111 */ | |
132 | { 9, 0xCC, 704 }, /* 0110 0110 0 */ | |
133 | { 9, 0xCD, 768 }, /* 0110 0110 1 */ | |
134 | { 9, 0xD2, 832 }, /* 0110 1001 0 */ | |
135 | { 9, 0xD3, 896 }, /* 0110 1001 1 */ | |
136 | { 9, 0xD4, 960 }, /* 0110 1010 0 */ | |
137 | { 9, 0xD5, 1024 }, /* 0110 1010 1 */ | |
138 | { 9, 0xD6, 1088 }, /* 0110 1011 0 */ | |
139 | { 9, 0xD7, 1152 }, /* 0110 1011 1 */ | |
140 | { 9, 0xD8, 1216 }, /* 0110 1100 0 */ | |
141 | { 9, 0xD9, 1280 }, /* 0110 1100 1 */ | |
142 | { 9, 0xDA, 1344 }, /* 0110 1101 0 */ | |
143 | { 9, 0xDB, 1408 }, /* 0110 1101 1 */ | |
144 | { 9, 0x98, 1472 }, /* 0100 1100 0 */ | |
145 | { 9, 0x99, 1536 }, /* 0100 1100 1 */ | |
146 | { 9, 0x9A, 1600 }, /* 0100 1101 0 */ | |
147 | { 6, 0x18, 1664 }, /* 0110 00 */ | |
148 | { 9, 0x9B, 1728 }, /* 0100 1101 1 */ | |
149 | { 11, 0x8, 1792 }, /* 0000 0001 000 */ | |
150 | { 11, 0xC, 1856 }, /* 0000 0001 100 */ | |
151 | { 11, 0xD, 1920 }, /* 0000 0001 101 */ | |
152 | { 12, 0x12, 1984 }, /* 0000 0001 0010 */ | |
153 | { 12, 0x13, 2048 }, /* 0000 0001 0011 */ | |
154 | { 12, 0x14, 2112 }, /* 0000 0001 0100 */ | |
155 | { 12, 0x15, 2176 }, /* 0000 0001 0101 */ | |
156 | { 12, 0x16, 2240 }, /* 0000 0001 0110 */ | |
157 | { 12, 0x17, 2304 }, /* 0000 0001 0111 */ | |
158 | { 12, 0x1C, 2368 }, /* 0000 0001 1100 */ | |
159 | { 12, 0x1D, 2432 }, /* 0000 0001 1101 */ | |
160 | { 12, 0x1E, 2496 }, /* 0000 0001 1110 */ | |
161 | { 12, 0x1F, 2560 }, /* 0000 0001 1111 */ | |
162 | { 12, 0x1, G3CODE_EOL }, /* 0000 0000 0001 */ | |
163 | { 9, 0x1, G3CODE_INVALID }, /* 0000 0000 1 */ | |
164 | { 10, 0x1, G3CODE_INVALID }, /* 0000 0000 01 */ | |
165 | { 11, 0x1, G3CODE_INVALID }, /* 0000 0000 001 */ | |
166 | { 12, 0x0, G3CODE_INVALID }, /* 0000 0000 0000 */ | |
167 | }; | |
168 | ||
169 | const tableentry TIFFFaxBlackCodes[] = { | |
170 | { 10, 0x37, 0 }, /* 0000 1101 11 */ | |
171 | { 3, 0x2, 1 }, /* 010 */ | |
172 | { 2, 0x3, 2 }, /* 11 */ | |
173 | { 2, 0x2, 3 }, /* 10 */ | |
174 | { 3, 0x3, 4 }, /* 011 */ | |
175 | { 4, 0x3, 5 }, /* 0011 */ | |
176 | { 4, 0x2, 6 }, /* 0010 */ | |
177 | { 5, 0x3, 7 }, /* 0001 1 */ | |
178 | { 6, 0x5, 8 }, /* 0001 01 */ | |
179 | { 6, 0x4, 9 }, /* 0001 00 */ | |
180 | { 7, 0x4, 10 }, /* 0000 100 */ | |
181 | { 7, 0x5, 11 }, /* 0000 101 */ | |
182 | { 7, 0x7, 12 }, /* 0000 111 */ | |
183 | { 8, 0x4, 13 }, /* 0000 0100 */ | |
184 | { 8, 0x7, 14 }, /* 0000 0111 */ | |
185 | { 9, 0x18, 15 }, /* 0000 1100 0 */ | |
186 | { 10, 0x17, 16 }, /* 0000 0101 11 */ | |
187 | { 10, 0x18, 17 }, /* 0000 0110 00 */ | |
188 | { 10, 0x8, 18 }, /* 0000 0010 00 */ | |
189 | { 11, 0x67, 19 }, /* 0000 1100 111 */ | |
190 | { 11, 0x68, 20 }, /* 0000 1101 000 */ | |
191 | { 11, 0x6C, 21 }, /* 0000 1101 100 */ | |
192 | { 11, 0x37, 22 }, /* 0000 0110 111 */ | |
193 | { 11, 0x28, 23 }, /* 0000 0101 000 */ | |
194 | { 11, 0x17, 24 }, /* 0000 0010 111 */ | |
195 | { 11, 0x18, 25 }, /* 0000 0011 000 */ | |
196 | { 12, 0xCA, 26 }, /* 0000 1100 1010 */ | |
197 | { 12, 0xCB, 27 }, /* 0000 1100 1011 */ | |
198 | { 12, 0xCC, 28 }, /* 0000 1100 1100 */ | |
199 | { 12, 0xCD, 29 }, /* 0000 1100 1101 */ | |
200 | { 12, 0x68, 30 }, /* 0000 0110 1000 */ | |
201 | { 12, 0x69, 31 }, /* 0000 0110 1001 */ | |
202 | { 12, 0x6A, 32 }, /* 0000 0110 1010 */ | |
203 | { 12, 0x6B, 33 }, /* 0000 0110 1011 */ | |
204 | { 12, 0xD2, 34 }, /* 0000 1101 0010 */ | |
205 | { 12, 0xD3, 35 }, /* 0000 1101 0011 */ | |
206 | { 12, 0xD4, 36 }, /* 0000 1101 0100 */ | |
207 | { 12, 0xD5, 37 }, /* 0000 1101 0101 */ | |
208 | { 12, 0xD6, 38 }, /* 0000 1101 0110 */ | |
209 | { 12, 0xD7, 39 }, /* 0000 1101 0111 */ | |
210 | { 12, 0x6C, 40 }, /* 0000 0110 1100 */ | |
211 | { 12, 0x6D, 41 }, /* 0000 0110 1101 */ | |
212 | { 12, 0xDA, 42 }, /* 0000 1101 1010 */ | |
213 | { 12, 0xDB, 43 }, /* 0000 1101 1011 */ | |
214 | { 12, 0x54, 44 }, /* 0000 0101 0100 */ | |
215 | { 12, 0x55, 45 }, /* 0000 0101 0101 */ | |
216 | { 12, 0x56, 46 }, /* 0000 0101 0110 */ | |
217 | { 12, 0x57, 47 }, /* 0000 0101 0111 */ | |
218 | { 12, 0x64, 48 }, /* 0000 0110 0100 */ | |
219 | { 12, 0x65, 49 }, /* 0000 0110 0101 */ | |
220 | { 12, 0x52, 50 }, /* 0000 0101 0010 */ | |
221 | { 12, 0x53, 51 }, /* 0000 0101 0011 */ | |
222 | { 12, 0x24, 52 }, /* 0000 0010 0100 */ | |
223 | { 12, 0x37, 53 }, /* 0000 0011 0111 */ | |
224 | { 12, 0x38, 54 }, /* 0000 0011 1000 */ | |
225 | { 12, 0x27, 55 }, /* 0000 0010 0111 */ | |
226 | { 12, 0x28, 56 }, /* 0000 0010 1000 */ | |
227 | { 12, 0x58, 57 }, /* 0000 0101 1000 */ | |
228 | { 12, 0x59, 58 }, /* 0000 0101 1001 */ | |
229 | { 12, 0x2B, 59 }, /* 0000 0010 1011 */ | |
230 | { 12, 0x2C, 60 }, /* 0000 0010 1100 */ | |
231 | { 12, 0x5A, 61 }, /* 0000 0101 1010 */ | |
232 | { 12, 0x66, 62 }, /* 0000 0110 0110 */ | |
233 | { 12, 0x67, 63 }, /* 0000 0110 0111 */ | |
234 | { 10, 0xF, 64 }, /* 0000 0011 11 */ | |
235 | { 12, 0xC8, 128 }, /* 0000 1100 1000 */ | |
236 | { 12, 0xC9, 192 }, /* 0000 1100 1001 */ | |
237 | { 12, 0x5B, 256 }, /* 0000 0101 1011 */ | |
238 | { 12, 0x33, 320 }, /* 0000 0011 0011 */ | |
239 | { 12, 0x34, 384 }, /* 0000 0011 0100 */ | |
240 | { 12, 0x35, 448 }, /* 0000 0011 0101 */ | |
241 | { 13, 0x6C, 512 }, /* 0000 0011 0110 0 */ | |
242 | { 13, 0x6D, 576 }, /* 0000 0011 0110 1 */ | |
243 | { 13, 0x4A, 640 }, /* 0000 0010 0101 0 */ | |
244 | { 13, 0x4B, 704 }, /* 0000 0010 0101 1 */ | |
245 | { 13, 0x4C, 768 }, /* 0000 0010 0110 0 */ | |
246 | { 13, 0x4D, 832 }, /* 0000 0010 0110 1 */ | |
247 | { 13, 0x72, 896 }, /* 0000 0011 1001 0 */ | |
248 | { 13, 0x73, 960 }, /* 0000 0011 1001 1 */ | |
249 | { 13, 0x74, 1024 }, /* 0000 0011 1010 0 */ | |
250 | { 13, 0x75, 1088 }, /* 0000 0011 1010 1 */ | |
251 | { 13, 0x76, 1152 }, /* 0000 0011 1011 0 */ | |
252 | { 13, 0x77, 1216 }, /* 0000 0011 1011 1 */ | |
253 | { 13, 0x52, 1280 }, /* 0000 0010 1001 0 */ | |
254 | { 13, 0x53, 1344 }, /* 0000 0010 1001 1 */ | |
255 | { 13, 0x54, 1408 }, /* 0000 0010 1010 0 */ | |
256 | { 13, 0x55, 1472 }, /* 0000 0010 1010 1 */ | |
257 | { 13, 0x5A, 1536 }, /* 0000 0010 1101 0 */ | |
258 | { 13, 0x5B, 1600 }, /* 0000 0010 1101 1 */ | |
259 | { 13, 0x64, 1664 }, /* 0000 0011 0010 0 */ | |
260 | { 13, 0x65, 1728 }, /* 0000 0011 0010 1 */ | |
261 | { 11, 0x8, 1792 }, /* 0000 0001 000 */ | |
262 | { 11, 0xC, 1856 }, /* 0000 0001 100 */ | |
263 | { 11, 0xD, 1920 }, /* 0000 0001 101 */ | |
264 | { 12, 0x12, 1984 }, /* 0000 0001 0010 */ | |
265 | { 12, 0x13, 2048 }, /* 0000 0001 0011 */ | |
266 | { 12, 0x14, 2112 }, /* 0000 0001 0100 */ | |
267 | { 12, 0x15, 2176 }, /* 0000 0001 0101 */ | |
268 | { 12, 0x16, 2240 }, /* 0000 0001 0110 */ | |
269 | { 12, 0x17, 2304 }, /* 0000 0001 0111 */ | |
270 | { 12, 0x1C, 2368 }, /* 0000 0001 1100 */ | |
271 | { 12, 0x1D, 2432 }, /* 0000 0001 1101 */ | |
272 | { 12, 0x1E, 2496 }, /* 0000 0001 1110 */ | |
273 | { 12, 0x1F, 2560 }, /* 0000 0001 1111 */ | |
274 | { 12, 0x1, G3CODE_EOL }, /* 0000 0000 0001 */ | |
275 | { 9, 0x1, G3CODE_INVALID }, /* 0000 0000 1 */ | |
276 | { 10, 0x1, G3CODE_INVALID }, /* 0000 0000 01 */ | |
277 | { 11, 0x1, G3CODE_INVALID }, /* 0000 0000 001 */ | |
278 | { 12, 0x0, G3CODE_INVALID }, /* 0000 0000 0000 */ | |
279 | }; | |
280 | #else | |
281 | extern const tableentry TIFFFaxWhiteCodes[]; | |
282 | extern const tableentry TIFFFaxBlackCodes[]; | |
283 | #endif | |
284 | #endif /* _T4_ */ | |
285 | /* | |
286 | * Local Variables: | |
287 | * mode: c | |
288 | * c-basic-offset: 8 | |
289 | * fill-column: 78 | |
290 | * End: | |
291 | */ |