diff options
Diffstat (limited to 'apps/codecs/demac/libdemac/crc.c')
-rw-r--r-- | apps/codecs/demac/libdemac/crc.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/apps/codecs/demac/libdemac/crc.c b/apps/codecs/demac/libdemac/crc.c new file mode 100644 index 0000000000..c23de7d043 --- /dev/null +++ b/apps/codecs/demac/libdemac/crc.c | |||
@@ -0,0 +1,119 @@ | |||
1 | /* | ||
2 | |||
3 | libdemac - A Monkey's Audio decoder | ||
4 | |||
5 | $Id:$ | ||
6 | |||
7 | Copyright (C) Dave Chapman 2007 | ||
8 | |||
9 | This program is free software; you can redistribute it and/or modify | ||
10 | it under the terms of the GNU General Public License as published by | ||
11 | the Free Software Foundation; either version 2 of the License, or | ||
12 | (at your option) any later version. | ||
13 | |||
14 | This program is distributed in the hope that it will be useful, | ||
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
17 | GNU General Public License for more details. | ||
18 | |||
19 | You should have received a copy of the GNU General Public License | ||
20 | along with this program; if not, write to the Free Software | ||
21 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA | ||
22 | |||
23 | */ | ||
24 | |||
25 | #include <inttypes.h> | ||
26 | |||
27 | static uint32_t crctab32[] = | ||
28 | { | ||
29 | 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, | ||
30 | 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, | ||
31 | 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, | ||
32 | 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, | ||
33 | 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, | ||
34 | 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, | ||
35 | 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, | ||
36 | 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, | ||
37 | 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, | ||
38 | 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, | ||
39 | 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, | ||
40 | 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, | ||
41 | 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, | ||
42 | 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, | ||
43 | 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, | ||
44 | 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, | ||
45 | |||
46 | 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, | ||
47 | 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, | ||
48 | 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, | ||
49 | 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, | ||
50 | 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, | ||
51 | 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, | ||
52 | 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, | ||
53 | 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, | ||
54 | 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, | ||
55 | 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, | ||
56 | 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, | ||
57 | 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, | ||
58 | 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, | ||
59 | 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, | ||
60 | 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, | ||
61 | 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, | ||
62 | |||
63 | 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, | ||
64 | 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, | ||
65 | 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, | ||
66 | 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, | ||
67 | 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, | ||
68 | 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, | ||
69 | 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, | ||
70 | 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, | ||
71 | 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, | ||
72 | 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, | ||
73 | 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, | ||
74 | 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, | ||
75 | 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, | ||
76 | 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, | ||
77 | 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, | ||
78 | 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, | ||
79 | |||
80 | 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, | ||
81 | 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, | ||
82 | 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, | ||
83 | 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, | ||
84 | 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, | ||
85 | 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, | ||
86 | 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, | ||
87 | 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, | ||
88 | 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, | ||
89 | 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, | ||
90 | 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, | ||
91 | 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, | ||
92 | 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, | ||
93 | 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, | ||
94 | 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, | ||
95 | 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D | ||
96 | }; | ||
97 | |||
98 | uint32_t ape_initcrc(void) | ||
99 | { | ||
100 | return 0xffffffff; | ||
101 | } | ||
102 | |||
103 | /* Update the CRC from a block of WAV-format audio data */ | ||
104 | uint32_t ape_updatecrc(unsigned char *block, int count, uint32_t crc) | ||
105 | { | ||
106 | while (count--) | ||
107 | crc = (crc >> 8) ^ crctab32[(crc & 0xff) ^ *block++]; | ||
108 | |||
109 | return crc; | ||
110 | } | ||
111 | |||
112 | uint32_t ape_finishcrc(uint32_t crc) | ||
113 | { | ||
114 | crc ^= 0xffffffff; | ||
115 | crc >>= 1; | ||
116 | |||
117 | return crc; | ||
118 | } | ||
119 | |||