1 | /**************************************************************************
|
---|
2 | *
|
---|
3 | * bitio_mem.c -- Functions for bitio to memory
|
---|
4 | * Copyright (C) 1994 Neil Sharman
|
---|
5 | *
|
---|
6 | * This program is free software; you can redistribute it and/or modify
|
---|
7 | * it under the terms of the GNU General Public License as published by
|
---|
8 | * the Free Software Foundation; either version 2 of the License, or
|
---|
9 | * (at your option) any later version.
|
---|
10 | *
|
---|
11 | * This program is distributed in the hope that it will be useful,
|
---|
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
14 | * GNU General Public License for more details.
|
---|
15 | *
|
---|
16 | * You should have received a copy of the GNU General Public License
|
---|
17 | * along with this program; if not, write to the Free Software
|
---|
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
19 | *
|
---|
20 | **************************************************************************/
|
---|
21 |
|
---|
22 | #include "sysfuncs.h"
|
---|
23 |
|
---|
24 | #include "bitio_m_mem.h"
|
---|
25 | #include "bitio_m.h"
|
---|
26 |
|
---|
27 | int fprintf (FILE *, const char *,...);
|
---|
28 |
|
---|
29 |
|
---|
30 |
|
---|
31 | void
|
---|
32 | BIO_Mem_Encode_Start (void *buf, int rem, mem_bitio_state * bs)
|
---|
33 | {
|
---|
34 | ENCODE_START (buf, rem)
|
---|
35 | ENCODE_PAUSE (*bs)
|
---|
36 | }
|
---|
37 |
|
---|
38 | void
|
---|
39 | BIO_Mem_Encode_Done (mem_bitio_state * bs)
|
---|
40 | {
|
---|
41 | ENCODE_CONTINUE (*bs)
|
---|
42 | ENCODE_DONE
|
---|
43 | }
|
---|
44 |
|
---|
45 |
|
---|
46 | void
|
---|
47 | BIO_Mem_Decode_Start (void *buf, int rem, mem_bitio_state * bs)
|
---|
48 | {
|
---|
49 | DECODE_START (buf, rem)
|
---|
50 | DECODE_PAUSE (*bs)
|
---|
51 | }
|
---|
52 |
|
---|
53 |
|
---|
54 |
|
---|
55 |
|
---|
56 | void
|
---|
57 | BIO_Mem_Unary_Encode (mg_u_long val, mem_bitio_state * bs,
|
---|
58 | mg_u_long *bits)
|
---|
59 | {
|
---|
60 | ENCODE_CONTINUE (*bs)
|
---|
61 | if (bits)
|
---|
62 | UNARY_ENCODE_L (val, *bits);
|
---|
63 | else
|
---|
64 | UNARY_ENCODE (val);
|
---|
65 | ENCODE_PAUSE (*bs)
|
---|
66 | }
|
---|
67 |
|
---|
68 |
|
---|
69 | mg_u_long
|
---|
70 | BIO_Mem_Unary_Decode (mem_bitio_state * bs,
|
---|
71 | mg_u_long *bits)
|
---|
72 | {
|
---|
73 | register mg_u_long val;
|
---|
74 | DECODE_CONTINUE (*bs)
|
---|
75 | if (bits)
|
---|
76 | UNARY_DECODE_L (val, *bits);
|
---|
77 | else
|
---|
78 | UNARY_DECODE (val);
|
---|
79 | DECODE_PAUSE (*bs)
|
---|
80 | return (val);
|
---|
81 | }
|
---|
82 |
|
---|
83 |
|
---|
84 |
|
---|
85 |
|
---|
86 |
|
---|
87 |
|
---|
88 |
|
---|
89 | void
|
---|
90 | BIO_Mem_Binary_Encode (mg_u_long val, mg_u_long b,
|
---|
91 | mem_bitio_state * bs, mg_u_long *bits)
|
---|
92 | {
|
---|
93 | ENCODE_CONTINUE (*bs)
|
---|
94 | if (bits)
|
---|
95 | BINARY_ENCODE_L (val, b, *bits);
|
---|
96 | else
|
---|
97 | BINARY_ENCODE (val, b);
|
---|
98 | ENCODE_PAUSE (*bs)
|
---|
99 | }
|
---|
100 |
|
---|
101 |
|
---|
102 | mg_u_long
|
---|
103 | BIO_Mem_Binary_Decode (mg_u_long b, mem_bitio_state * bs,
|
---|
104 | mg_u_long *bits)
|
---|
105 | {
|
---|
106 | register mg_u_long val;
|
---|
107 | DECODE_CONTINUE (*bs)
|
---|
108 | if (bits)
|
---|
109 | BINARY_DECODE_L (val, b, *bits);
|
---|
110 | else
|
---|
111 | BINARY_DECODE (val, b);
|
---|
112 | DECODE_PAUSE (*bs)
|
---|
113 | return (val);
|
---|
114 | }
|
---|
115 |
|
---|
116 |
|
---|
117 |
|
---|
118 |
|
---|
119 |
|
---|
120 |
|
---|
121 |
|
---|
122 | void
|
---|
123 | BIO_Mem_Gamma_Encode (mg_u_long val, mem_bitio_state * bs,
|
---|
124 | mg_u_long *bits)
|
---|
125 | {
|
---|
126 | ENCODE_CONTINUE (*bs)
|
---|
127 | if (bits)
|
---|
128 | GAMMA_ENCODE_L (val, *bits);
|
---|
129 | else
|
---|
130 | GAMMA_ENCODE (val);
|
---|
131 | ENCODE_PAUSE (*bs)
|
---|
132 | }
|
---|
133 |
|
---|
134 |
|
---|
135 | mg_u_long
|
---|
136 | BIO_Mem_Gamma_Decode (mem_bitio_state * bs, mg_u_long *bits)
|
---|
137 | {
|
---|
138 | register mg_u_long val;
|
---|
139 | DECODE_CONTINUE (*bs)
|
---|
140 | if (bits)
|
---|
141 | GAMMA_DECODE_L (val, *bits);
|
---|
142 | else
|
---|
143 | GAMMA_DECODE (val);
|
---|
144 | DECODE_PAUSE (*bs)
|
---|
145 | return (val);
|
---|
146 | }
|
---|
147 |
|
---|
148 |
|
---|
149 |
|
---|
150 |
|
---|
151 | void
|
---|
152 | BIO_Mem_Delta_Encode (mg_u_long val, mem_bitio_state * bs,
|
---|
153 | mg_u_long *bits)
|
---|
154 | {
|
---|
155 | ENCODE_CONTINUE (*bs)
|
---|
156 | if (bits)
|
---|
157 | DELTA_ENCODE_L (val, *bits);
|
---|
158 | else
|
---|
159 | DELTA_ENCODE (val);
|
---|
160 | ENCODE_PAUSE (*bs)
|
---|
161 | }
|
---|
162 |
|
---|
163 |
|
---|
164 | mg_u_long
|
---|
165 | BIO_Mem_Delta_Decode (mem_bitio_state * bs, mg_u_long *bits)
|
---|
166 | {
|
---|
167 | register mg_u_long val;
|
---|
168 | DECODE_CONTINUE (*bs)
|
---|
169 | if (bits)
|
---|
170 | DELTA_DECODE_L (val, *bits);
|
---|
171 | else
|
---|
172 | DELTA_DECODE (val);
|
---|
173 | DECODE_PAUSE (*bs)
|
---|
174 | return (val);
|
---|
175 | }
|
---|
176 |
|
---|
177 | void
|
---|
178 | BIO_Mem_Elias_Encode (mg_u_long val, mg_u_long b, double s,
|
---|
179 | mem_bitio_state * bs, mg_u_long *bits)
|
---|
180 | {
|
---|
181 | ENCODE_CONTINUE (*bs)
|
---|
182 | if (bits)
|
---|
183 | ELIAS_ENCODE_L (val, b, s, *bits);
|
---|
184 | else
|
---|
185 | ELIAS_ENCODE (val, b, s);
|
---|
186 | ENCODE_PAUSE (*bs)
|
---|
187 | }
|
---|
188 |
|
---|
189 |
|
---|
190 | mg_u_long
|
---|
191 | BIO_Mem_Elias_Decode (mg_u_long b, double s,
|
---|
192 | mem_bitio_state * bs, mg_u_long *bits)
|
---|
193 | {
|
---|
194 | register mg_u_long val;
|
---|
195 | DECODE_CONTINUE (*bs)
|
---|
196 | if (bits)
|
---|
197 | ELIAS_DECODE_L (val, b, s, *bits);
|
---|
198 | else
|
---|
199 | ELIAS_DECODE (val, b, s);
|
---|
200 | DECODE_PAUSE (*bs)
|
---|
201 | return (val);
|
---|
202 | }
|
---|
203 |
|
---|
204 | void
|
---|
205 | BIO_Mem_Bblock_Encode (mg_u_long val, mg_u_long b,
|
---|
206 | mem_bitio_state * bs, mg_u_long *bits)
|
---|
207 | {
|
---|
208 | ENCODE_CONTINUE (*bs)
|
---|
209 | if (bits)
|
---|
210 | BBLOCK_ENCODE_L (val, b, *bits);
|
---|
211 | else
|
---|
212 | BBLOCK_ENCODE (val, b);
|
---|
213 | ENCODE_PAUSE (*bs)
|
---|
214 | }
|
---|
215 |
|
---|
216 |
|
---|
217 | mg_u_long
|
---|
218 | BIO_Mem_Bblock_Decode (mg_u_long b, mem_bitio_state * bs,
|
---|
219 | mg_u_long *bits)
|
---|
220 | {
|
---|
221 | register mg_u_long val;
|
---|
222 | DECODE_CONTINUE (*bs)
|
---|
223 | if (bits)
|
---|
224 | BBLOCK_DECODE_L (val, b, *bits);
|
---|
225 | else
|
---|
226 | BBLOCK_DECODE (val, b);
|
---|
227 | DECODE_PAUSE (*bs)
|
---|
228 | return (val);
|
---|
229 | }
|
---|
230 |
|
---|
231 | void
|
---|
232 | BIO_Mem_Decode_Seek (mg_u_long pos, mem_bitio_state * bs)
|
---|
233 | {
|
---|
234 | DECODE_CONTINUE (*bs)
|
---|
235 | DECODE_SEEK (pos);
|
---|
236 | DECODE_PAUSE (*bs)
|
---|
237 | }
|
---|