2 * Copyright (c) 2008-2009 Ariff Abdullah <ariff@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #define G711_TABLE_SIZE 256
34 #define ULAW_TO_U8 { \
35 3, 7, 11, 15, 19, 23, 27, 31, \
36 35, 39, 43, 47, 51, 55, 59, 63, \
37 66, 68, 70, 72, 74, 76, 78, 80, \
38 82, 84, 86, 88, 90, 92, 94, 96, \
39 98, 99, 100, 101, 102, 103, 104, 105, \
40 106, 107, 108, 109, 110, 111, 112, 113, \
41 113, 114, 114, 115, 115, 116, 116, 117, \
42 117, 118, 118, 119, 119, 120, 120, 121, \
43 121, 121, 122, 122, 122, 122, 123, 123, \
44 123, 123, 124, 124, 124, 124, 125, 125, \
45 125, 125, 125, 125, 126, 126, 126, 126, \
46 126, 126, 126, 126, 127, 127, 127, 127, \
47 127, 127, 127, 127, 127, 127, 127, 127, \
48 128, 128, 128, 128, 128, 128, 128, 128, \
49 128, 128, 128, 128, 128, 128, 128, 128, \
50 128, 128, 128, 128, 128, 128, 128, 128, \
51 253, 249, 245, 241, 237, 233, 229, 225, \
52 221, 217, 213, 209, 205, 201, 197, 193, \
53 190, 188, 186, 184, 182, 180, 178, 176, \
54 174, 172, 170, 168, 166, 164, 162, 160, \
55 158, 157, 156, 155, 154, 153, 152, 151, \
56 150, 149, 148, 147, 146, 145, 144, 143, \
57 143, 142, 142, 141, 141, 140, 140, 139, \
58 139, 138, 138, 137, 137, 136, 136, 135, \
59 135, 135, 134, 134, 134, 134, 133, 133, \
60 133, 133, 132, 132, 132, 132, 131, 131, \
61 131, 131, 131, 131, 130, 130, 130, 130, \
62 130, 130, 130, 130, 129, 129, 129, 129, \
63 129, 129, 129, 129, 129, 129, 129, 129, \
64 128, 128, 128, 128, 128, 128, 128, 128, \
65 128, 128, 128, 128, 128, 128, 128, 128, \
66 128, 128, 128, 128, 128, 128, 128, 128, \
69 #define ALAW_TO_U8 { \
70 108, 109, 106, 107, 112, 113, 110, 111, \
71 100, 101, 98, 99, 104, 105, 102, 103, \
72 118, 118, 117, 117, 120, 120, 119, 119, \
73 114, 114, 113, 113, 116, 116, 115, 115, \
74 43, 47, 35, 39, 59, 63, 51, 55, \
75 11, 15, 3, 7, 27, 31, 19, 23, \
76 86, 88, 82, 84, 94, 96, 90, 92, \
77 70, 72, 66, 68, 78, 80, 74, 76, \
78 127, 127, 127, 127, 127, 127, 127, 127, \
79 127, 127, 127, 127, 127, 127, 127, 127, \
80 128, 128, 128, 128, 128, 128, 128, 128, \
81 128, 128, 128, 128, 128, 128, 128, 128, \
82 123, 123, 123, 123, 124, 124, 124, 124, \
83 121, 121, 121, 121, 122, 122, 122, 122, \
84 126, 126, 126, 126, 126, 126, 126, 126, \
85 125, 125, 125, 125, 125, 125, 125, 125, \
86 148, 147, 150, 149, 144, 143, 146, 145, \
87 156, 155, 158, 157, 152, 151, 154, 153, \
88 138, 138, 139, 139, 136, 136, 137, 137, \
89 142, 142, 143, 143, 140, 140, 141, 141, \
90 213, 209, 221, 217, 197, 193, 205, 201, \
91 245, 241, 253, 249, 229, 225, 237, 233, \
92 170, 168, 174, 172, 162, 160, 166, 164, \
93 186, 184, 190, 188, 178, 176, 182, 180, \
94 129, 129, 129, 129, 129, 129, 129, 129, \
95 129, 129, 129, 129, 129, 129, 129, 129, \
96 128, 128, 128, 128, 128, 128, 128, 128, \
97 128, 128, 128, 128, 128, 128, 128, 128, \
98 133, 133, 133, 133, 132, 132, 132, 132, \
99 135, 135, 135, 135, 134, 134, 134, 134, \
100 130, 130, 130, 130, 130, 130, 130, 130, \
101 131, 131, 131, 131, 131, 131, 131, 131, \
104 #define U8_TO_ULAW { \
105 0, 0, 0, 0, 0, 1, 1, 1, \
106 1, 2, 2, 2, 2, 3, 3, 3, \
107 3, 4, 4, 4, 4, 5, 5, 5, \
108 5, 6, 6, 6, 6, 7, 7, 7, \
109 7, 8, 8, 8, 8, 9, 9, 9, \
110 9, 10, 10, 10, 10, 11, 11, 11, \
111 11, 12, 12, 12, 12, 13, 13, 13, \
112 13, 14, 14, 14, 14, 15, 15, 15, \
113 15, 16, 16, 17, 17, 18, 18, 19, \
114 19, 20, 20, 21, 21, 22, 22, 23, \
115 23, 24, 24, 25, 25, 26, 26, 27, \
116 27, 28, 28, 29, 29, 30, 30, 31, \
117 31, 32, 33, 34, 35, 36, 37, 38, \
118 39, 40, 41, 42, 43, 44, 45, 46, \
119 47, 49, 51, 53, 55, 57, 59, 61, \
120 63, 66, 70, 74, 78, 84, 92, 104, \
121 254, 231, 219, 211, 205, 201, 197, 193, \
122 190, 188, 186, 184, 182, 180, 178, 176, \
123 175, 174, 173, 172, 171, 170, 169, 168, \
124 167, 166, 165, 164, 163, 162, 161, 160, \
125 159, 159, 158, 158, 157, 157, 156, 156, \
126 155, 155, 154, 154, 153, 153, 152, 152, \
127 151, 151, 150, 150, 149, 149, 148, 148, \
128 147, 147, 146, 146, 145, 145, 144, 144, \
129 143, 143, 143, 143, 142, 142, 142, 142, \
130 141, 141, 141, 141, 140, 140, 140, 140, \
131 139, 139, 139, 139, 138, 138, 138, 138, \
132 137, 137, 137, 137, 136, 136, 136, 136, \
133 135, 135, 135, 135, 134, 134, 134, 134, \
134 133, 133, 133, 133, 132, 132, 132, 132, \
135 131, 131, 131, 131, 130, 130, 130, 130, \
136 129, 129, 129, 129, 128, 128, 128, 128, \
139 #define U8_TO_ALAW { \
140 42, 42, 42, 42, 42, 43, 43, 43, \
141 43, 40, 40, 40, 40, 41, 41, 41, \
142 41, 46, 46, 46, 46, 47, 47, 47, \
143 47, 44, 44, 44, 44, 45, 45, 45, \
144 45, 34, 34, 34, 34, 35, 35, 35, \
145 35, 32, 32, 32, 32, 33, 33, 33, \
146 33, 38, 38, 38, 38, 39, 39, 39, \
147 39, 36, 36, 36, 36, 37, 37, 37, \
148 37, 58, 58, 59, 59, 56, 56, 57, \
149 57, 62, 62, 63, 63, 60, 60, 61, \
150 61, 50, 50, 51, 51, 48, 48, 49, \
151 49, 54, 54, 55, 55, 52, 52, 53, \
152 53, 10, 11, 8, 9, 14, 15, 12, \
153 13, 2, 3, 0, 1, 6, 7, 4, \
154 5, 24, 30, 28, 18, 16, 22, 20, \
155 106, 110, 98, 102, 122, 114, 75, 90, \
156 213, 197, 245, 253, 229, 225, 237, 233, \
157 149, 151, 145, 147, 157, 159, 153, 155, \
158 133, 132, 135, 134, 129, 128, 131, 130, \
159 141, 140, 143, 142, 137, 136, 139, 138, \
160 181, 181, 180, 180, 183, 183, 182, 182, \
161 177, 177, 176, 176, 179, 179, 178, 178, \
162 189, 189, 188, 188, 191, 191, 190, 190, \
163 185, 185, 184, 184, 187, 187, 186, 186, \
164 165, 165, 165, 165, 164, 164, 164, 164, \
165 167, 167, 167, 167, 166, 166, 166, 166, \
166 161, 161, 161, 161, 160, 160, 160, 160, \
167 163, 163, 163, 163, 162, 162, 162, 162, \
168 173, 173, 173, 173, 172, 172, 172, 172, \
169 175, 175, 175, 175, 174, 174, 174, 174, \
170 169, 169, 169, 169, 168, 168, 168, 168, \
171 171, 171, 171, 171, 170, 170, 170, 170, \
175 #define _G711_TO_INTPCM(t, v) ((intpcm_t) \
176 ((int8_t)((t)[(uint8_t)(v)] ^ 0x80)))
178 #define _INTPCM_TO_G711(t, v) ((t)[(uint8_t)((v) ^ 0x80)])
181 #define G711_DECLARE_TABLE(t) \
182 static const struct { \
183 const uint8_t ulaw_to_u8[G711_TABLE_SIZE]; \
184 const uint8_t alaw_to_u8[G711_TABLE_SIZE]; \
185 const uint8_t u8_to_ulaw[G711_TABLE_SIZE]; \
186 const uint8_t u8_to_alaw[G711_TABLE_SIZE]; \
188 ULAW_TO_U8, ALAW_TO_U8, \
189 U8_TO_ULAW, U8_TO_ALAW \
192 #define G711_DECLARE_OP(t) \
193 static __inline intpcm_t \
194 pcm_read_ulaw(uint8_t v) \
197 return (_G711_TO_INTPCM((t).ulaw_to_u8, v)); \
200 static __inline intpcm_t \
201 pcm_read_alaw(uint8_t v) \
204 return (_G711_TO_INTPCM((t).alaw_to_u8, v)); \
207 static __inline void \
208 pcm_write_ulaw(uint8_t *dst, intpcm_t v) \
211 *dst = _INTPCM_TO_G711((t).u8_to_ulaw, v); \
214 static __inline void \
215 pcm_write_alaw(uint8_t *dst, intpcm_t v) \
218 *dst = _INTPCM_TO_G711((t).u8_to_alaw, v); \
221 #define G711_DECLARE(t) \
222 G711_DECLARE_TABLE(t); \
225 #endif /* !_SND_G711_H_ */