1 /* Copyright (C) 2001-2006 Artifex Software, Inc.
2 All Rights Reserved.
3
4 This software is provided AS-IS with no warranty, either express or
5 implied.
6
7 This software is distributed under license and may not be copied, modified
8 or distributed except as expressly authorized under the terms of that
9 license. Refer to licensing information at http://www.artifex.com/
10 or contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134,
11 San Rafael, CA 94903, U.S.A., +1(415)492-9861, for further information.
12 */
13
14 /* $Id: scfetab.c 8022 2007-06-05 22:23:38Z giles $ */
15 /* Tables for CCITTFaxEncode filter */
16 #include "std.h"
17 #include "scommon.h" /* for scf.h */
18 #include "scf.h"
19
20 /* We make this a separate file so that it can be used by */
21 /* the program that generates the tables for the CCITTFaxDecode filter. */
22
23 /* ------ Run encoding tables ------ */
24
25 /* Abbreviate hce_entry to make the file smaller. */
26 #define RUN(c,len) hce_entry(c,len)
27
28 /* Define the end-of-line code. */
29 /* Code in scfd.c and scfdgen.c knows that the run value is 1. */
30 const cfe_run cf_run_eol =
31 RUN(run_eol_code_value, run_eol_code_length);
32
33 /* Define the 1-D code that signals uncompressed data. */
34 const cfe_run cf1_run_uncompressed =
35 RUN(0xf, 12);
36
37 /* Define the 2-D run codes. */
38 const cfe_run cf2_run_pass =
39 RUN(cf2_run_pass_value, cf2_run_pass_length);
40 const cfe_run cf2_run_vertical[7] =
41 {
42 RUN(0x3, 7),
43 RUN(0x3, 6),
44 RUN(0x3, 3),
45 RUN(0x1, 1),
46 RUN(0x2, 3),
47 RUN(0x2, 6),
48 RUN(0x2, 7)
49 };
50 const cfe_run cf2_run_horizontal =
51 RUN(cf2_run_horizontal_value, cf2_run_horizontal_length);
52 const cfe_run cf2_run_uncompressed =
53 RUN(0xf, 10);
54
55 /* EOL codes for Group 3 2-D. */
56 /* Code in scfd.c knows that these are 0...01x. */
57 const cfe_run cf2_run_eol_1d =
58 RUN((run_eol_code_value << 1) + 1, run_eol_code_length + 1);
59 const cfe_run cf2_run_eol_2d =
60 RUN((run_eol_code_value << 1) + 0, run_eol_code_length + 1);
61
62 /* White run codes. */
63 const cf_runs cf_white_runs =
64 {
65 { /* Termination codes */
66 RUN(0x35, 8), RUN(0x7, 6), RUN(0x7, 4), RUN(0x8, 4),
67 RUN(0xb, 4), RUN(0xc, 4), RUN(0xe, 4), RUN(0xf, 4),
68 RUN(0x13, 5), RUN(0x14, 5), RUN(0x7, 5), RUN(0x8, 5),
69 RUN(0x8, 6), RUN(0x3, 6), RUN(0x34, 6), RUN(0x35, 6),
70 RUN(0x2a, 6), RUN(0x2b, 6), RUN(0x27, 7), RUN(0xc, 7),
71 RUN(0x8, 7), RUN(0x17, 7), RUN(0x3, 7), RUN(0x4, 7),
72 RUN(0x28, 7), RUN(0x2b, 7), RUN(0x13, 7), RUN(0x24, 7),
73 RUN(0x18, 7), RUN(0x2, 8), RUN(0x3, 8), RUN(0x1a, 8),
74 RUN(0x1b, 8), RUN(0x12, 8), RUN(0x13, 8), RUN(0x14, 8),
75 RUN(0x15, 8), RUN(0x16, 8), RUN(0x17, 8), RUN(0x28, 8),
76 RUN(0x29, 8), RUN(0x2a, 8), RUN(0x2b, 8), RUN(0x2c, 8),
77 RUN(0x2d, 8), RUN(0x4, 8), RUN(0x5, 8), RUN(0xa, 8),
78 RUN(0xb, 8), RUN(0x52, 8), RUN(0x53, 8), RUN(0x54, 8),
79 RUN(0x55, 8), RUN(0x24, 8), RUN(0x25, 8), RUN(0x58, 8),
80 RUN(0x59, 8), RUN(0x5a, 8), RUN(0x5b, 8), RUN(0x4a, 8),
81 RUN(0x4b, 8), RUN(0x32, 8), RUN(0x33, 8), RUN(0x34, 8)
82 },
83 { /* Make-up codes */
84 RUN(0, 0) /* dummy */ , RUN(0x1b, 5), RUN(0x12, 5), RUN(0x17, 6),
85 RUN(0x37, 7), RUN(0x36, 8), RUN(0x37, 8), RUN(0x64, 8),
86 RUN(0x65, 8), RUN(0x68, 8), RUN(0x67, 8), RUN(0xcc, 9),
87 RUN(0xcd, 9), RUN(0xd2, 9), RUN(0xd3, 9), RUN(0xd4, 9),
88 RUN(0xd5, 9), RUN(0xd6, 9), RUN(0xd7, 9), RUN(0xd8, 9),
89 RUN(0xd9, 9), RUN(0xda, 9), RUN(0xdb, 9), RUN(0x98, 9),
90 RUN(0x99, 9), RUN(0x9a, 9), RUN(0x18, 6), RUN(0x9b, 9),
91 RUN(0x8, 11), RUN(0xc, 11), RUN(0xd, 11), RUN(0x12, 12),
92 RUN(0x13, 12), RUN(0x14, 12), RUN(0x15, 12), RUN(0x16, 12),
93 RUN(0x17, 12), RUN(0x1c, 12), RUN(0x1d, 12), RUN(0x1e, 12),
94 RUN(0x1f, 12)
95 }
96 };
97
98 /* Black run codes. */
99 const cf_runs cf_black_runs =
100 {
101 { /* Termination codes */
102 RUN(0x37, 10), RUN(0x2, 3), RUN(0x3, 2), RUN(0x2, 2),
103 RUN(0x3, 3), RUN(0x3, 4), RUN(0x2, 4), RUN(0x3, 5),
104 RUN(0x5, 6), RUN(0x4, 6), RUN(0x4, 7), RUN(0x5, 7),
105 RUN(0x7, 7), RUN(0x4, 8), RUN(0x7, 8), RUN(0x18, 9),
106 RUN(0x17, 10), RUN(0x18, 10), RUN(0x8, 10), RUN(0x67, 11),
107 RUN(0x68, 11), RUN(0x6c, 11), RUN(0x37, 11), RUN(0x28, 11),
108 RUN(0x17, 11), RUN(0x18, 11), RUN(0xca, 12), RUN(0xcb, 12),
109 RUN(0xcc, 12), RUN(0xcd, 12), RUN(0x68, 12), RUN(0x69, 12),
110 RUN(0x6a, 12), RUN(0x6b, 12), RUN(0xd2, 12), RUN(0xd3, 12),
111 RUN(0xd4, 12), RUN(0xd5, 12), RUN(0xd6, 12), RUN(0xd7, 12),
112 RUN(0x6c, 12), RUN(0x6d, 12), RUN(0xda, 12), RUN(0xdb, 12),
113 RUN(0x54, 12), RUN(0x55, 12), RUN(0x56, 12), RUN(0x57, 12),
114 RUN(0x64, 12), RUN(0x65, 12), RUN(0x52, 12), RUN(0x53, 12),
115 RUN(0x24, 12), RUN(0x37, 12), RUN(0x38, 12), RUN(0x27, 12),
116 RUN(0x28, 12), RUN(0x58, 12), RUN(0x59, 12), RUN(0x2b, 12),
117 RUN(0x2c, 12), RUN(0x5a, 12), RUN(0x66, 12), RUN(0x67, 12)
118 },
119 { /* Make-up codes. */
120 RUN(0, 0) /* dummy */ , RUN(0xf, 10), RUN(0xc8, 12), RUN(0xc9, 12),
121 RUN(0x5b, 12), RUN(0x33, 12), RUN(0x34, 12), RUN(0x35, 12),
122 RUN(0x6c, 13), RUN(0x6d, 13), RUN(0x4a, 13), RUN(0x4b, 13),
123 RUN(0x4c, 13), RUN(0x4d, 13), RUN(0x72, 13), RUN(0x73, 13),
124 RUN(0x74, 13), RUN(0x75, 13), RUN(0x76, 13), RUN(0x77, 13),
125 RUN(0x52, 13), RUN(0x53, 13), RUN(0x54, 13), RUN(0x55, 13),
126 RUN(0x5a, 13), RUN(0x5b, 13), RUN(0x64, 13), RUN(0x65, 13),
127 RUN(0x8, 11), RUN(0xc, 11), RUN(0xd, 11), RUN(0x12, 12),
128 RUN(0x13, 12), RUN(0x14, 12), RUN(0x15, 12), RUN(0x16, 12),
129 RUN(0x17, 12), RUN(0x1c, 12), RUN(0x1d, 12), RUN(0x1e, 12),
130 RUN(0x1f, 12)
131 }
132 };
133
134 /* Uncompressed codes. */
135 const cfe_run cf_uncompressed[6] =
136 {
137 RUN(1, 1),
138 RUN(1, 2),
139 RUN(1, 3),
140 RUN(1, 4),
141 RUN(1, 5),
142 RUN(1, 6)
143 };
144
145 /* Uncompressed exit codes. */
146 const cfe_run cf_uncompressed_exit[10] =
147 {
148 RUN(2, 8), RUN(3, 8),
149 RUN(2, 9), RUN(3, 9),
150 RUN(2, 10), RUN(3, 10),
151 RUN(2, 11), RUN(3, 11),
152 RUN(2, 12), RUN(3, 12)
153 };
154
155 /* Some C compilers insist on having executable code in every file.... */
156 void scfetab_dummy(void); /* for picky compilers */
157 void
scfetab_dummy(void)158 scfetab_dummy(void)
159 {
160 }
161