1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000-2009 Josh Coalson
3 * Copyright (C) 2011-2018 Xiph.Org Foundation
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * - Neither the name of the Xiph.org Foundation nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 #include "private/crc.h"
39 /* CRC-8, poly = x^8 + x^2 + x^1 + x^0, init = 0 */
41 FLAC__uint8
const FLAC__crc8_table
[256] = {
42 0x00, 0x07, 0x0E, 0x09, 0x1C, 0x1B, 0x12, 0x15,
43 0x38, 0x3F, 0x36, 0x31, 0x24, 0x23, 0x2A, 0x2D,
44 0x70, 0x77, 0x7E, 0x79, 0x6C, 0x6B, 0x62, 0x65,
45 0x48, 0x4F, 0x46, 0x41, 0x54, 0x53, 0x5A, 0x5D,
46 0xE0, 0xE7, 0xEE, 0xE9, 0xFC, 0xFB, 0xF2, 0xF5,
47 0xD8, 0xDF, 0xD6, 0xD1, 0xC4, 0xC3, 0xCA, 0xCD,
48 0x90, 0x97, 0x9E, 0x99, 0x8C, 0x8B, 0x82, 0x85,
49 0xA8, 0xAF, 0xA6, 0xA1, 0xB4, 0xB3, 0xBA, 0xBD,
50 0xC7, 0xC0, 0xC9, 0xCE, 0xDB, 0xDC, 0xD5, 0xD2,
51 0xFF, 0xF8, 0xF1, 0xF6, 0xE3, 0xE4, 0xED, 0xEA,
52 0xB7, 0xB0, 0xB9, 0xBE, 0xAB, 0xAC, 0xA5, 0xA2,
53 0x8F, 0x88, 0x81, 0x86, 0x93, 0x94, 0x9D, 0x9A,
54 0x27, 0x20, 0x29, 0x2E, 0x3B, 0x3C, 0x35, 0x32,
55 0x1F, 0x18, 0x11, 0x16, 0x03, 0x04, 0x0D, 0x0A,
56 0x57, 0x50, 0x59, 0x5E, 0x4B, 0x4C, 0x45, 0x42,
57 0x6F, 0x68, 0x61, 0x66, 0x73, 0x74, 0x7D, 0x7A,
58 0x89, 0x8E, 0x87, 0x80, 0x95, 0x92, 0x9B, 0x9C,
59 0xB1, 0xB6, 0xBF, 0xB8, 0xAD, 0xAA, 0xA3, 0xA4,
60 0xF9, 0xFE, 0xF7, 0xF0, 0xE5, 0xE2, 0xEB, 0xEC,
61 0xC1, 0xC6, 0xCF, 0xC8, 0xDD, 0xDA, 0xD3, 0xD4,
62 0x69, 0x6E, 0x67, 0x60, 0x75, 0x72, 0x7B, 0x7C,
63 0x51, 0x56, 0x5F, 0x58, 0x4D, 0x4A, 0x43, 0x44,
64 0x19, 0x1E, 0x17, 0x10, 0x05, 0x02, 0x0B, 0x0C,
65 0x21, 0x26, 0x2F, 0x28, 0x3D, 0x3A, 0x33, 0x34,
66 0x4E, 0x49, 0x40, 0x47, 0x52, 0x55, 0x5C, 0x5B,
67 0x76, 0x71, 0x78, 0x7F, 0x6A, 0x6D, 0x64, 0x63,
68 0x3E, 0x39, 0x30, 0x37, 0x22, 0x25, 0x2C, 0x2B,
69 0x06, 0x01, 0x08, 0x0F, 0x1A, 0x1D, 0x14, 0x13,
70 0xAE, 0xA9, 0xA0, 0xA7, 0xB2, 0xB5, 0xBC, 0xBB,
71 0x96, 0x91, 0x98, 0x9F, 0x8A, 0x8D, 0x84, 0x83,
72 0xDE, 0xD9, 0xD0, 0xD7, 0xC2, 0xC5, 0xCC, 0xCB,
73 0xE6, 0xE1, 0xE8, 0xEF, 0xFA, 0xFD, 0xF4, 0xF3
76 /* CRC-16, poly = x^16 + x^15 + x^2 + x^0, init = 0 */
78 FLAC__uint16
const FLAC__crc16_table
[8][256] = {
79 { 0x0000, 0x8005, 0x800f, 0x000a, 0x801b, 0x001e, 0x0014, 0x8011,
80 0x8033, 0x0036, 0x003c, 0x8039, 0x0028, 0x802d, 0x8027, 0x0022,
81 0x8063, 0x0066, 0x006c, 0x8069, 0x0078, 0x807d, 0x8077, 0x0072,
82 0x0050, 0x8055, 0x805f, 0x005a, 0x804b, 0x004e, 0x0044, 0x8041,
83 0x80c3, 0x00c6, 0x00cc, 0x80c9, 0x00d8, 0x80dd, 0x80d7, 0x00d2,
84 0x00f0, 0x80f5, 0x80ff, 0x00fa, 0x80eb, 0x00ee, 0x00e4, 0x80e1,
85 0x00a0, 0x80a5, 0x80af, 0x00aa, 0x80bb, 0x00be, 0x00b4, 0x80b1,
86 0x8093, 0x0096, 0x009c, 0x8099, 0x0088, 0x808d, 0x8087, 0x0082,
87 0x8183, 0x0186, 0x018c, 0x8189, 0x0198, 0x819d, 0x8197, 0x0192,
88 0x01b0, 0x81b5, 0x81bf, 0x01ba, 0x81ab, 0x01ae, 0x01a4, 0x81a1,
89 0x01e0, 0x81e5, 0x81ef, 0x01ea, 0x81fb, 0x01fe, 0x01f4, 0x81f1,
90 0x81d3, 0x01d6, 0x01dc, 0x81d9, 0x01c8, 0x81cd, 0x81c7, 0x01c2,
91 0x0140, 0x8145, 0x814f, 0x014a, 0x815b, 0x015e, 0x0154, 0x8151,
92 0x8173, 0x0176, 0x017c, 0x8179, 0x0168, 0x816d, 0x8167, 0x0162,
93 0x8123, 0x0126, 0x012c, 0x8129, 0x0138, 0x813d, 0x8137, 0x0132,
94 0x0110, 0x8115, 0x811f, 0x011a, 0x810b, 0x010e, 0x0104, 0x8101,
95 0x8303, 0x0306, 0x030c, 0x8309, 0x0318, 0x831d, 0x8317, 0x0312,
96 0x0330, 0x8335, 0x833f, 0x033a, 0x832b, 0x032e, 0x0324, 0x8321,
97 0x0360, 0x8365, 0x836f, 0x036a, 0x837b, 0x037e, 0x0374, 0x8371,
98 0x8353, 0x0356, 0x035c, 0x8359, 0x0348, 0x834d, 0x8347, 0x0342,
99 0x03c0, 0x83c5, 0x83cf, 0x03ca, 0x83db, 0x03de, 0x03d4, 0x83d1,
100 0x83f3, 0x03f6, 0x03fc, 0x83f9, 0x03e8, 0x83ed, 0x83e7, 0x03e2,
101 0x83a3, 0x03a6, 0x03ac, 0x83a9, 0x03b8, 0x83bd, 0x83b7, 0x03b2,
102 0x0390, 0x8395, 0x839f, 0x039a, 0x838b, 0x038e, 0x0384, 0x8381,
103 0x0280, 0x8285, 0x828f, 0x028a, 0x829b, 0x029e, 0x0294, 0x8291,
104 0x82b3, 0x02b6, 0x02bc, 0x82b9, 0x02a8, 0x82ad, 0x82a7, 0x02a2,
105 0x82e3, 0x02e6, 0x02ec, 0x82e9, 0x02f8, 0x82fd, 0x82f7, 0x02f2,
106 0x02d0, 0x82d5, 0x82df, 0x02da, 0x82cb, 0x02ce, 0x02c4, 0x82c1,
107 0x8243, 0x0246, 0x024c, 0x8249, 0x0258, 0x825d, 0x8257, 0x0252,
108 0x0270, 0x8275, 0x827f, 0x027a, 0x826b, 0x026e, 0x0264, 0x8261,
109 0x0220, 0x8225, 0x822f, 0x022a, 0x823b, 0x023e, 0x0234, 0x8231,
110 0x8213, 0x0216, 0x021c, 0x8219, 0x0208, 0x820d, 0x8207, 0x0202 },
112 { 0x0000, 0x8603, 0x8c03, 0x0a00, 0x9803, 0x1e00, 0x1400, 0x9203,
113 0xb003, 0x3600, 0x3c00, 0xba03, 0x2800, 0xae03, 0xa403, 0x2200,
114 0xe003, 0x6600, 0x6c00, 0xea03, 0x7800, 0xfe03, 0xf403, 0x7200,
115 0x5000, 0xd603, 0xdc03, 0x5a00, 0xc803, 0x4e00, 0x4400, 0xc203,
116 0x4003, 0xc600, 0xcc00, 0x4a03, 0xd800, 0x5e03, 0x5403, 0xd200,
117 0xf000, 0x7603, 0x7c03, 0xfa00, 0x6803, 0xee00, 0xe400, 0x6203,
118 0xa000, 0x2603, 0x2c03, 0xaa00, 0x3803, 0xbe00, 0xb400, 0x3203,
119 0x1003, 0x9600, 0x9c00, 0x1a03, 0x8800, 0x0e03, 0x0403, 0x8200,
120 0x8006, 0x0605, 0x0c05, 0x8a06, 0x1805, 0x9e06, 0x9406, 0x1205,
121 0x3005, 0xb606, 0xbc06, 0x3a05, 0xa806, 0x2e05, 0x2405, 0xa206,
122 0x6005, 0xe606, 0xec06, 0x6a05, 0xf806, 0x7e05, 0x7405, 0xf206,
123 0xd006, 0x5605, 0x5c05, 0xda06, 0x4805, 0xce06, 0xc406, 0x4205,
124 0xc005, 0x4606, 0x4c06, 0xca05, 0x5806, 0xde05, 0xd405, 0x5206,
125 0x7006, 0xf605, 0xfc05, 0x7a06, 0xe805, 0x6e06, 0x6406, 0xe205,
126 0x2006, 0xa605, 0xac05, 0x2a06, 0xb805, 0x3e06, 0x3406, 0xb205,
127 0x9005, 0x1606, 0x1c06, 0x9a05, 0x0806, 0x8e05, 0x8405, 0x0206,
128 0x8009, 0x060a, 0x0c0a, 0x8a09, 0x180a, 0x9e09, 0x9409, 0x120a,
129 0x300a, 0xb609, 0xbc09, 0x3a0a, 0xa809, 0x2e0a, 0x240a, 0xa209,
130 0x600a, 0xe609, 0xec09, 0x6a0a, 0xf809, 0x7e0a, 0x740a, 0xf209,
131 0xd009, 0x560a, 0x5c0a, 0xda09, 0x480a, 0xce09, 0xc409, 0x420a,
132 0xc00a, 0x4609, 0x4c09, 0xca0a, 0x5809, 0xde0a, 0xd40a, 0x5209,
133 0x7009, 0xf60a, 0xfc0a, 0x7a09, 0xe80a, 0x6e09, 0x6409, 0xe20a,
134 0x2009, 0xa60a, 0xac0a, 0x2a09, 0xb80a, 0x3e09, 0x3409, 0xb20a,
135 0x900a, 0x1609, 0x1c09, 0x9a0a, 0x0809, 0x8e0a, 0x840a, 0x0209,
136 0x000f, 0x860c, 0x8c0c, 0x0a0f, 0x980c, 0x1e0f, 0x140f, 0x920c,
137 0xb00c, 0x360f, 0x3c0f, 0xba0c, 0x280f, 0xae0c, 0xa40c, 0x220f,
138 0xe00c, 0x660f, 0x6c0f, 0xea0c, 0x780f, 0xfe0c, 0xf40c, 0x720f,
139 0x500f, 0xd60c, 0xdc0c, 0x5a0f, 0xc80c, 0x4e0f, 0x440f, 0xc20c,
140 0x400c, 0xc60f, 0xcc0f, 0x4a0c, 0xd80f, 0x5e0c, 0x540c, 0xd20f,
141 0xf00f, 0x760c, 0x7c0c, 0xfa0f, 0x680c, 0xee0f, 0xe40f, 0x620c,
142 0xa00f, 0x260c, 0x2c0c, 0xaa0f, 0x380c, 0xbe0f, 0xb40f, 0x320c,
143 0x100c, 0x960f, 0x9c0f, 0x1a0c, 0x880f, 0x0e0c, 0x040c, 0x820f },
145 { 0x0000, 0x8017, 0x802b, 0x003c, 0x8053, 0x0044, 0x0078, 0x806f,
146 0x80a3, 0x00b4, 0x0088, 0x809f, 0x00f0, 0x80e7, 0x80db, 0x00cc,
147 0x8143, 0x0154, 0x0168, 0x817f, 0x0110, 0x8107, 0x813b, 0x012c,
148 0x01e0, 0x81f7, 0x81cb, 0x01dc, 0x81b3, 0x01a4, 0x0198, 0x818f,
149 0x8283, 0x0294, 0x02a8, 0x82bf, 0x02d0, 0x82c7, 0x82fb, 0x02ec,
150 0x0220, 0x8237, 0x820b, 0x021c, 0x8273, 0x0264, 0x0258, 0x824f,
151 0x03c0, 0x83d7, 0x83eb, 0x03fc, 0x8393, 0x0384, 0x03b8, 0x83af,
152 0x8363, 0x0374, 0x0348, 0x835f, 0x0330, 0x8327, 0x831b, 0x030c,
153 0x8503, 0x0514, 0x0528, 0x853f, 0x0550, 0x8547, 0x857b, 0x056c,
154 0x05a0, 0x85b7, 0x858b, 0x059c, 0x85f3, 0x05e4, 0x05d8, 0x85cf,
155 0x0440, 0x8457, 0x846b, 0x047c, 0x8413, 0x0404, 0x0438, 0x842f,
156 0x84e3, 0x04f4, 0x04c8, 0x84df, 0x04b0, 0x84a7, 0x849b, 0x048c,
157 0x0780, 0x8797, 0x87ab, 0x07bc, 0x87d3, 0x07c4, 0x07f8, 0x87ef,
158 0x8723, 0x0734, 0x0708, 0x871f, 0x0770, 0x8767, 0x875b, 0x074c,
159 0x86c3, 0x06d4, 0x06e8, 0x86ff, 0x0690, 0x8687, 0x86bb, 0x06ac,
160 0x0660, 0x8677, 0x864b, 0x065c, 0x8633, 0x0624, 0x0618, 0x860f,
161 0x8a03, 0x0a14, 0x0a28, 0x8a3f, 0x0a50, 0x8a47, 0x8a7b, 0x0a6c,
162 0x0aa0, 0x8ab7, 0x8a8b, 0x0a9c, 0x8af3, 0x0ae4, 0x0ad8, 0x8acf,
163 0x0b40, 0x8b57, 0x8b6b, 0x0b7c, 0x8b13, 0x0b04, 0x0b38, 0x8b2f,
164 0x8be3, 0x0bf4, 0x0bc8, 0x8bdf, 0x0bb0, 0x8ba7, 0x8b9b, 0x0b8c,
165 0x0880, 0x8897, 0x88ab, 0x08bc, 0x88d3, 0x08c4, 0x08f8, 0x88ef,
166 0x8823, 0x0834, 0x0808, 0x881f, 0x0870, 0x8867, 0x885b, 0x084c,
167 0x89c3, 0x09d4, 0x09e8, 0x89ff, 0x0990, 0x8987, 0x89bb, 0x09ac,
168 0x0960, 0x8977, 0x894b, 0x095c, 0x8933, 0x0924, 0x0918, 0x890f,
169 0x0f00, 0x8f17, 0x8f2b, 0x0f3c, 0x8f53, 0x0f44, 0x0f78, 0x8f6f,
170 0x8fa3, 0x0fb4, 0x0f88, 0x8f9f, 0x0ff0, 0x8fe7, 0x8fdb, 0x0fcc,
171 0x8e43, 0x0e54, 0x0e68, 0x8e7f, 0x0e10, 0x8e07, 0x8e3b, 0x0e2c,
172 0x0ee0, 0x8ef7, 0x8ecb, 0x0edc, 0x8eb3, 0x0ea4, 0x0e98, 0x8e8f,
173 0x8d83, 0x0d94, 0x0da8, 0x8dbf, 0x0dd0, 0x8dc7, 0x8dfb, 0x0dec,
174 0x0d20, 0x8d37, 0x8d0b, 0x0d1c, 0x8d73, 0x0d64, 0x0d58, 0x8d4f,
175 0x0cc0, 0x8cd7, 0x8ceb, 0x0cfc, 0x8c93, 0x0c84, 0x0cb8, 0x8caf,
176 0x8c63, 0x0c74, 0x0c48, 0x8c5f, 0x0c30, 0x8c27, 0x8c1b, 0x0c0c },
178 { 0x0000, 0x9403, 0xa803, 0x3c00, 0xd003, 0x4400, 0x7800, 0xec03,
179 0x2003, 0xb400, 0x8800, 0x1c03, 0xf000, 0x6403, 0x5803, 0xcc00,
180 0x4006, 0xd405, 0xe805, 0x7c06, 0x9005, 0x0406, 0x3806, 0xac05,
181 0x6005, 0xf406, 0xc806, 0x5c05, 0xb006, 0x2405, 0x1805, 0x8c06,
182 0x800c, 0x140f, 0x280f, 0xbc0c, 0x500f, 0xc40c, 0xf80c, 0x6c0f,
183 0xa00f, 0x340c, 0x080c, 0x9c0f, 0x700c, 0xe40f, 0xd80f, 0x4c0c,
184 0xc00a, 0x5409, 0x6809, 0xfc0a, 0x1009, 0x840a, 0xb80a, 0x2c09,
185 0xe009, 0x740a, 0x480a, 0xdc09, 0x300a, 0xa409, 0x9809, 0x0c0a,
186 0x801d, 0x141e, 0x281e, 0xbc1d, 0x501e, 0xc41d, 0xf81d, 0x6c1e,
187 0xa01e, 0x341d, 0x081d, 0x9c1e, 0x701d, 0xe41e, 0xd81e, 0x4c1d,
188 0xc01b, 0x5418, 0x6818, 0xfc1b, 0x1018, 0x841b, 0xb81b, 0x2c18,
189 0xe018, 0x741b, 0x481b, 0xdc18, 0x301b, 0xa418, 0x9818, 0x0c1b,
190 0x0011, 0x9412, 0xa812, 0x3c11, 0xd012, 0x4411, 0x7811, 0xec12,
191 0x2012, 0xb411, 0x8811, 0x1c12, 0xf011, 0x6412, 0x5812, 0xcc11,
192 0x4017, 0xd414, 0xe814, 0x7c17, 0x9014, 0x0417, 0x3817, 0xac14,
193 0x6014, 0xf417, 0xc817, 0x5c14, 0xb017, 0x2414, 0x1814, 0x8c17,
194 0x803f, 0x143c, 0x283c, 0xbc3f, 0x503c, 0xc43f, 0xf83f, 0x6c3c,
195 0xa03c, 0x343f, 0x083f, 0x9c3c, 0x703f, 0xe43c, 0xd83c, 0x4c3f,
196 0xc039, 0x543a, 0x683a, 0xfc39, 0x103a, 0x8439, 0xb839, 0x2c3a,
197 0xe03a, 0x7439, 0x4839, 0xdc3a, 0x3039, 0xa43a, 0x983a, 0x0c39,
198 0x0033, 0x9430, 0xa830, 0x3c33, 0xd030, 0x4433, 0x7833, 0xec30,
199 0x2030, 0xb433, 0x8833, 0x1c30, 0xf033, 0x6430, 0x5830, 0xcc33,
200 0x4035, 0xd436, 0xe836, 0x7c35, 0x9036, 0x0435, 0x3835, 0xac36,
201 0x6036, 0xf435, 0xc835, 0x5c36, 0xb035, 0x2436, 0x1836, 0x8c35,
202 0x0022, 0x9421, 0xa821, 0x3c22, 0xd021, 0x4422, 0x7822, 0xec21,
203 0x2021, 0xb422, 0x8822, 0x1c21, 0xf022, 0x6421, 0x5821, 0xcc22,
204 0x4024, 0xd427, 0xe827, 0x7c24, 0x9027, 0x0424, 0x3824, 0xac27,
205 0x6027, 0xf424, 0xc824, 0x5c27, 0xb024, 0x2427, 0x1827, 0x8c24,
206 0x802e, 0x142d, 0x282d, 0xbc2e, 0x502d, 0xc42e, 0xf82e, 0x6c2d,
207 0xa02d, 0x342e, 0x082e, 0x9c2d, 0x702e, 0xe42d, 0xd82d, 0x4c2e,
208 0xc028, 0x542b, 0x682b, 0xfc28, 0x102b, 0x8428, 0xb828, 0x2c2b,
209 0xe02b, 0x7428, 0x4828, 0xdc2b, 0x3028, 0xa42b, 0x982b, 0x0c28 },
211 { 0x0000, 0x807b, 0x80f3, 0x0088, 0x81e3, 0x0198, 0x0110, 0x816b,
212 0x83c3, 0x03b8, 0x0330, 0x834b, 0x0220, 0x825b, 0x82d3, 0x02a8,
213 0x8783, 0x07f8, 0x0770, 0x870b, 0x0660, 0x861b, 0x8693, 0x06e8,
214 0x0440, 0x843b, 0x84b3, 0x04c8, 0x85a3, 0x05d8, 0x0550, 0x852b,
215 0x8f03, 0x0f78, 0x0ff0, 0x8f8b, 0x0ee0, 0x8e9b, 0x8e13, 0x0e68,
216 0x0cc0, 0x8cbb, 0x8c33, 0x0c48, 0x8d23, 0x0d58, 0x0dd0, 0x8dab,
217 0x0880, 0x88fb, 0x8873, 0x0808, 0x8963, 0x0918, 0x0990, 0x89eb,
218 0x8b43, 0x0b38, 0x0bb0, 0x8bcb, 0x0aa0, 0x8adb, 0x8a53, 0x0a28,
219 0x9e03, 0x1e78, 0x1ef0, 0x9e8b, 0x1fe0, 0x9f9b, 0x9f13, 0x1f68,
220 0x1dc0, 0x9dbb, 0x9d33, 0x1d48, 0x9c23, 0x1c58, 0x1cd0, 0x9cab,
221 0x1980, 0x99fb, 0x9973, 0x1908, 0x9863, 0x1818, 0x1890, 0x98eb,
222 0x9a43, 0x1a38, 0x1ab0, 0x9acb, 0x1ba0, 0x9bdb, 0x9b53, 0x1b28,
223 0x1100, 0x917b, 0x91f3, 0x1188, 0x90e3, 0x1098, 0x1010, 0x906b,
224 0x92c3, 0x12b8, 0x1230, 0x924b, 0x1320, 0x935b, 0x93d3, 0x13a8,
225 0x9683, 0x16f8, 0x1670, 0x960b, 0x1760, 0x971b, 0x9793, 0x17e8,
226 0x1540, 0x953b, 0x95b3, 0x15c8, 0x94a3, 0x14d8, 0x1450, 0x942b,
227 0xbc03, 0x3c78, 0x3cf0, 0xbc8b, 0x3de0, 0xbd9b, 0xbd13, 0x3d68,
228 0x3fc0, 0xbfbb, 0xbf33, 0x3f48, 0xbe23, 0x3e58, 0x3ed0, 0xbeab,
229 0x3b80, 0xbbfb, 0xbb73, 0x3b08, 0xba63, 0x3a18, 0x3a90, 0xbaeb,
230 0xb843, 0x3838, 0x38b0, 0xb8cb, 0x39a0, 0xb9db, 0xb953, 0x3928,
231 0x3300, 0xb37b, 0xb3f3, 0x3388, 0xb2e3, 0x3298, 0x3210, 0xb26b,
232 0xb0c3, 0x30b8, 0x3030, 0xb04b, 0x3120, 0xb15b, 0xb1d3, 0x31a8,
233 0xb483, 0x34f8, 0x3470, 0xb40b, 0x3560, 0xb51b, 0xb593, 0x35e8,
234 0x3740, 0xb73b, 0xb7b3, 0x37c8, 0xb6a3, 0x36d8, 0x3650, 0xb62b,
235 0x2200, 0xa27b, 0xa2f3, 0x2288, 0xa3e3, 0x2398, 0x2310, 0xa36b,
236 0xa1c3, 0x21b8, 0x2130, 0xa14b, 0x2020, 0xa05b, 0xa0d3, 0x20a8,
237 0xa583, 0x25f8, 0x2570, 0xa50b, 0x2460, 0xa41b, 0xa493, 0x24e8,
238 0x2640, 0xa63b, 0xa6b3, 0x26c8, 0xa7a3, 0x27d8, 0x2750, 0xa72b,
239 0xad03, 0x2d78, 0x2df0, 0xad8b, 0x2ce0, 0xac9b, 0xac13, 0x2c68,
240 0x2ec0, 0xaebb, 0xae33, 0x2e48, 0xaf23, 0x2f58, 0x2fd0, 0xafab,
241 0x2a80, 0xaafb, 0xaa73, 0x2a08, 0xab63, 0x2b18, 0x2b90, 0xabeb,
242 0xa943, 0x2938, 0x29b0, 0xa9cb, 0x28a0, 0xa8db, 0xa853, 0x2828 },
244 { 0x0000, 0xf803, 0x7003, 0x8800, 0xe006, 0x1805, 0x9005, 0x6806,
245 0x4009, 0xb80a, 0x300a, 0xc809, 0xa00f, 0x580c, 0xd00c, 0x280f,
246 0x8012, 0x7811, 0xf011, 0x0812, 0x6014, 0x9817, 0x1017, 0xe814,
247 0xc01b, 0x3818, 0xb018, 0x481b, 0x201d, 0xd81e, 0x501e, 0xa81d,
248 0x8021, 0x7822, 0xf022, 0x0821, 0x6027, 0x9824, 0x1024, 0xe827,
249 0xc028, 0x382b, 0xb02b, 0x4828, 0x202e, 0xd82d, 0x502d, 0xa82e,
250 0x0033, 0xf830, 0x7030, 0x8833, 0xe035, 0x1836, 0x9036, 0x6835,
251 0x403a, 0xb839, 0x3039, 0xc83a, 0xa03c, 0x583f, 0xd03f, 0x283c,
252 0x8047, 0x7844, 0xf044, 0x0847, 0x6041, 0x9842, 0x1042, 0xe841,
253 0xc04e, 0x384d, 0xb04d, 0x484e, 0x2048, 0xd84b, 0x504b, 0xa848,
254 0x0055, 0xf856, 0x7056, 0x8855, 0xe053, 0x1850, 0x9050, 0x6853,
255 0x405c, 0xb85f, 0x305f, 0xc85c, 0xa05a, 0x5859, 0xd059, 0x285a,
256 0x0066, 0xf865, 0x7065, 0x8866, 0xe060, 0x1863, 0x9063, 0x6860,
257 0x406f, 0xb86c, 0x306c, 0xc86f, 0xa069, 0x586a, 0xd06a, 0x2869,
258 0x8074, 0x7877, 0xf077, 0x0874, 0x6072, 0x9871, 0x1071, 0xe872,
259 0xc07d, 0x387e, 0xb07e, 0x487d, 0x207b, 0xd878, 0x5078, 0xa87b,
260 0x808b, 0x7888, 0xf088, 0x088b, 0x608d, 0x988e, 0x108e, 0xe88d,
261 0xc082, 0x3881, 0xb081, 0x4882, 0x2084, 0xd887, 0x5087, 0xa884,
262 0x0099, 0xf89a, 0x709a, 0x8899, 0xe09f, 0x189c, 0x909c, 0x689f,
263 0x4090, 0xb893, 0x3093, 0xc890, 0xa096, 0x5895, 0xd095, 0x2896,
264 0x00aa, 0xf8a9, 0x70a9, 0x88aa, 0xe0ac, 0x18af, 0x90af, 0x68ac,
265 0x40a3, 0xb8a0, 0x30a0, 0xc8a3, 0xa0a5, 0x58a6, 0xd0a6, 0x28a5,
266 0x80b8, 0x78bb, 0xf0bb, 0x08b8, 0x60be, 0x98bd, 0x10bd, 0xe8be,
267 0xc0b1, 0x38b2, 0xb0b2, 0x48b1, 0x20b7, 0xd8b4, 0x50b4, 0xa8b7,
268 0x00cc, 0xf8cf, 0x70cf, 0x88cc, 0xe0ca, 0x18c9, 0x90c9, 0x68ca,
269 0x40c5, 0xb8c6, 0x30c6, 0xc8c5, 0xa0c3, 0x58c0, 0xd0c0, 0x28c3,
270 0x80de, 0x78dd, 0xf0dd, 0x08de, 0x60d8, 0x98db, 0x10db, 0xe8d8,
271 0xc0d7, 0x38d4, 0xb0d4, 0x48d7, 0x20d1, 0xd8d2, 0x50d2, 0xa8d1,
272 0x80ed, 0x78ee, 0xf0ee, 0x08ed, 0x60eb, 0x98e8, 0x10e8, 0xe8eb,
273 0xc0e4, 0x38e7, 0xb0e7, 0x48e4, 0x20e2, 0xd8e1, 0x50e1, 0xa8e2,
274 0x00ff, 0xf8fc, 0x70fc, 0x88ff, 0xe0f9, 0x18fa, 0x90fa, 0x68f9,
275 0x40f6, 0xb8f5, 0x30f5, 0xc8f6, 0xa0f0, 0x58f3, 0xd0f3, 0x28f0 },
277 { 0x0000, 0x8113, 0x8223, 0x0330, 0x8443, 0x0550, 0x0660, 0x8773,
278 0x8883, 0x0990, 0x0aa0, 0x8bb3, 0x0cc0, 0x8dd3, 0x8ee3, 0x0ff0,
279 0x9103, 0x1010, 0x1320, 0x9233, 0x1540, 0x9453, 0x9763, 0x1670,
280 0x1980, 0x9893, 0x9ba3, 0x1ab0, 0x9dc3, 0x1cd0, 0x1fe0, 0x9ef3,
281 0xa203, 0x2310, 0x2020, 0xa133, 0x2640, 0xa753, 0xa463, 0x2570,
282 0x2a80, 0xab93, 0xa8a3, 0x29b0, 0xaec3, 0x2fd0, 0x2ce0, 0xadf3,
283 0x3300, 0xb213, 0xb123, 0x3030, 0xb743, 0x3650, 0x3560, 0xb473,
284 0xbb83, 0x3a90, 0x39a0, 0xb8b3, 0x3fc0, 0xbed3, 0xbde3, 0x3cf0,
285 0xc403, 0x4510, 0x4620, 0xc733, 0x4040, 0xc153, 0xc263, 0x4370,
286 0x4c80, 0xcd93, 0xcea3, 0x4fb0, 0xc8c3, 0x49d0, 0x4ae0, 0xcbf3,
287 0x5500, 0xd413, 0xd723, 0x5630, 0xd143, 0x5050, 0x5360, 0xd273,
288 0xdd83, 0x5c90, 0x5fa0, 0xdeb3, 0x59c0, 0xd8d3, 0xdbe3, 0x5af0,
289 0x6600, 0xe713, 0xe423, 0x6530, 0xe243, 0x6350, 0x6060, 0xe173,
290 0xee83, 0x6f90, 0x6ca0, 0xedb3, 0x6ac0, 0xebd3, 0xe8e3, 0x69f0,
291 0xf703, 0x7610, 0x7520, 0xf433, 0x7340, 0xf253, 0xf163, 0x7070,
292 0x7f80, 0xfe93, 0xfda3, 0x7cb0, 0xfbc3, 0x7ad0, 0x79e0, 0xf8f3,
293 0x0803, 0x8910, 0x8a20, 0x0b33, 0x8c40, 0x0d53, 0x0e63, 0x8f70,
294 0x8080, 0x0193, 0x02a3, 0x83b0, 0x04c3, 0x85d0, 0x86e0, 0x07f3,
295 0x9900, 0x1813, 0x1b23, 0x9a30, 0x1d43, 0x9c50, 0x9f60, 0x1e73,
296 0x1183, 0x9090, 0x93a0, 0x12b3, 0x95c0, 0x14d3, 0x17e3, 0x96f0,
297 0xaa00, 0x2b13, 0x2823, 0xa930, 0x2e43, 0xaf50, 0xac60, 0x2d73,
298 0x2283, 0xa390, 0xa0a0, 0x21b3, 0xa6c0, 0x27d3, 0x24e3, 0xa5f0,
299 0x3b03, 0xba10, 0xb920, 0x3833, 0xbf40, 0x3e53, 0x3d63, 0xbc70,
300 0xb380, 0x3293, 0x31a3, 0xb0b0, 0x37c3, 0xb6d0, 0xb5e0, 0x34f3,
301 0xcc00, 0x4d13, 0x4e23, 0xcf30, 0x4843, 0xc950, 0xca60, 0x4b73,
302 0x4483, 0xc590, 0xc6a0, 0x47b3, 0xc0c0, 0x41d3, 0x42e3, 0xc3f0,
303 0x5d03, 0xdc10, 0xdf20, 0x5e33, 0xd940, 0x5853, 0x5b63, 0xda70,
304 0xd580, 0x5493, 0x57a3, 0xd6b0, 0x51c3, 0xd0d0, 0xd3e0, 0x52f3,
305 0x6e03, 0xef10, 0xec20, 0x6d33, 0xea40, 0x6b53, 0x6863, 0xe970,
306 0xe680, 0x6793, 0x64a3, 0xe5b0, 0x62c3, 0xe3d0, 0xe0e0, 0x61f3,
307 0xff00, 0x7e13, 0x7d23, 0xfc30, 0x7b43, 0xfa50, 0xf960, 0x7873,
308 0x7783, 0xf690, 0xf5a0, 0x74b3, 0xf3c0, 0x72d3, 0x71e3, 0xf0f0 },
310 { 0x0000, 0x1006, 0x200c, 0x300a, 0x4018, 0x501e, 0x6014, 0x7012,
311 0x8030, 0x9036, 0xa03c, 0xb03a, 0xc028, 0xd02e, 0xe024, 0xf022,
312 0x8065, 0x9063, 0xa069, 0xb06f, 0xc07d, 0xd07b, 0xe071, 0xf077,
313 0x0055, 0x1053, 0x2059, 0x305f, 0x404d, 0x504b, 0x6041, 0x7047,
314 0x80cf, 0x90c9, 0xa0c3, 0xb0c5, 0xc0d7, 0xd0d1, 0xe0db, 0xf0dd,
315 0x00ff, 0x10f9, 0x20f3, 0x30f5, 0x40e7, 0x50e1, 0x60eb, 0x70ed,
316 0x00aa, 0x10ac, 0x20a6, 0x30a0, 0x40b2, 0x50b4, 0x60be, 0x70b8,
317 0x809a, 0x909c, 0xa096, 0xb090, 0xc082, 0xd084, 0xe08e, 0xf088,
318 0x819b, 0x919d, 0xa197, 0xb191, 0xc183, 0xd185, 0xe18f, 0xf189,
319 0x01ab, 0x11ad, 0x21a7, 0x31a1, 0x41b3, 0x51b5, 0x61bf, 0x71b9,
320 0x01fe, 0x11f8, 0x21f2, 0x31f4, 0x41e6, 0x51e0, 0x61ea, 0x71ec,
321 0x81ce, 0x91c8, 0xa1c2, 0xb1c4, 0xc1d6, 0xd1d0, 0xe1da, 0xf1dc,
322 0x0154, 0x1152, 0x2158, 0x315e, 0x414c, 0x514a, 0x6140, 0x7146,
323 0x8164, 0x9162, 0xa168, 0xb16e, 0xc17c, 0xd17a, 0xe170, 0xf176,
324 0x8131, 0x9137, 0xa13d, 0xb13b, 0xc129, 0xd12f, 0xe125, 0xf123,
325 0x0101, 0x1107, 0x210d, 0x310b, 0x4119, 0x511f, 0x6115, 0x7113,
326 0x8333, 0x9335, 0xa33f, 0xb339, 0xc32b, 0xd32d, 0xe327, 0xf321,
327 0x0303, 0x1305, 0x230f, 0x3309, 0x431b, 0x531d, 0x6317, 0x7311,
328 0x0356, 0x1350, 0x235a, 0x335c, 0x434e, 0x5348, 0x6342, 0x7344,
329 0x8366, 0x9360, 0xa36a, 0xb36c, 0xc37e, 0xd378, 0xe372, 0xf374,
330 0x03fc, 0x13fa, 0x23f0, 0x33f6, 0x43e4, 0x53e2, 0x63e8, 0x73ee,
331 0x83cc, 0x93ca, 0xa3c0, 0xb3c6, 0xc3d4, 0xd3d2, 0xe3d8, 0xf3de,
332 0x8399, 0x939f, 0xa395, 0xb393, 0xc381, 0xd387, 0xe38d, 0xf38b,
333 0x03a9, 0x13af, 0x23a5, 0x33a3, 0x43b1, 0x53b7, 0x63bd, 0x73bb,
334 0x02a8, 0x12ae, 0x22a4, 0x32a2, 0x42b0, 0x52b6, 0x62bc, 0x72ba,
335 0x8298, 0x929e, 0xa294, 0xb292, 0xc280, 0xd286, 0xe28c, 0xf28a,
336 0x82cd, 0x92cb, 0xa2c1, 0xb2c7, 0xc2d5, 0xd2d3, 0xe2d9, 0xf2df,
337 0x02fd, 0x12fb, 0x22f1, 0x32f7, 0x42e5, 0x52e3, 0x62e9, 0x72ef,
338 0x8267, 0x9261, 0xa26b, 0xb26d, 0xc27f, 0xd279, 0xe273, 0xf275,
339 0x0257, 0x1251, 0x225b, 0x325d, 0x424f, 0x5249, 0x6243, 0x7245,
340 0x0202, 0x1204, 0x220e, 0x3208, 0x421a, 0x521c, 0x6216, 0x7210,
341 0x8232, 0x9234, 0xa23e, 0xb238, 0xc22a, 0xd22c, 0xe226, 0xf220 }
345 void FLAC__crc16_init_table(void)
348 FLAC__uint16 polynomial
, crc
;
351 for(i
= 0; i
<= 0xFF; i
++){
354 for(j
= 0; j
< 8; j
++)
355 crc
= (crc
<< 1) ^ (crc
& (1 << 15) ? polynomial
: 0);
357 FLAC__crc16_table
[0][i
] = crc
;
360 for(i
= 0; i
<= 0xFF; i
++)
361 for(j
= 1; j
< 8; j
++)
362 FLAC__crc16_table
[j
][i
] = FLAC__crc16_table
[0][FLAC__crc16_table
[j
- 1][i
] >> 8] ^ (FLAC__crc16_table
[j
- 1][i
] << 8);
366 FLAC__uint8
FLAC__crc8(const FLAC__byte
*data
, uint32_t len
)
371 crc
= FLAC__crc8_table
[crc
^ *data
++];
376 FLAC__uint16
FLAC__crc16(const FLAC__byte
*data
, uint32_t len
)
378 FLAC__uint16 crc
= 0;
381 crc
^= data
[0] << 8 | data
[1];
383 crc
= FLAC__crc16_table
[7][crc
>> 8] ^ FLAC__crc16_table
[6][crc
& 0xFF] ^
384 FLAC__crc16_table
[5][data
[2] ] ^ FLAC__crc16_table
[4][data
[3] ] ^
385 FLAC__crc16_table
[3][data
[4] ] ^ FLAC__crc16_table
[2][data
[5] ] ^
386 FLAC__crc16_table
[1][data
[6] ] ^ FLAC__crc16_table
[0][data
[7] ];
393 crc
= (crc
<<8) ^ FLAC__crc16_table
[0][(crc
>>8) ^ *data
++];
398 FLAC__uint16
FLAC__crc16_update_words32(const FLAC__uint32
*words
, uint32_t len
, FLAC__uint16 crc
)
401 crc
^= words
[0] >> 16;
403 crc
= FLAC__crc16_table
[7][crc
>> 8 ] ^ FLAC__crc16_table
[6][crc
& 0xFF ] ^
404 FLAC__crc16_table
[5][(words
[0] >> 8) & 0xFF] ^ FLAC__crc16_table
[4][ words
[0] & 0xFF] ^
405 FLAC__crc16_table
[3][ words
[1] >> 24 ] ^ FLAC__crc16_table
[2][(words
[1] >> 16) & 0xFF] ^
406 FLAC__crc16_table
[1][(words
[1] >> 8) & 0xFF] ^ FLAC__crc16_table
[0][ words
[1] & 0xFF];
413 crc
^= words
[0] >> 16;
415 crc
= FLAC__crc16_table
[3][crc
>> 8 ] ^ FLAC__crc16_table
[2][crc
& 0xFF ] ^
416 FLAC__crc16_table
[1][(words
[0] >> 8) & 0xFF] ^ FLAC__crc16_table
[0][words
[0] & 0xFF];
422 FLAC__uint16
FLAC__crc16_update_words64(const FLAC__uint64
*words
, uint32_t len
, FLAC__uint16 crc
)
425 crc
^= words
[0] >> 48;
427 crc
= FLAC__crc16_table
[7][crc
>> 8 ] ^ FLAC__crc16_table
[6][crc
& 0xFF ] ^
428 FLAC__crc16_table
[5][(words
[0] >> 40) & 0xFF] ^ FLAC__crc16_table
[4][(words
[0] >> 32) & 0xFF] ^
429 FLAC__crc16_table
[3][(words
[0] >> 24) & 0xFF] ^ FLAC__crc16_table
[2][(words
[0] >> 16) & 0xFF] ^
430 FLAC__crc16_table
[1][(words
[0] >> 8) & 0xFF] ^ FLAC__crc16_table
[0][ words
[0] & 0xFF];
