Shinichi Fuchita
streaming server for AM/FM radio via UDP connection.
Dependencies: mbed EthernetNetIf
crc32.c@2:3b6816fd4ae6, 2012-08-30 (annotated)
- Committer:
- soramimi
- Date:
- Thu Aug 30 08:35:20 2012 +0000
- Revision:
- 2:3b6816fd4ae6
- Parent:
- 0:bd865e5a3df3
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| soramimi | 0:bd865e5a3df3 | 1 | |
| soramimi | 0:bd865e5a3df3 | 2 | #include "crc32.h" |
| soramimi | 0:bd865e5a3df3 | 3 | |
| soramimi | 0:bd865e5a3df3 | 4 | static unsigned long crc32_table[] = { |
| soramimi | 0:bd865e5a3df3 | 5 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, |
| soramimi | 0:bd865e5a3df3 | 6 | 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, |
| soramimi | 0:bd865e5a3df3 | 7 | 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, |
| soramimi | 0:bd865e5a3df3 | 8 | 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, |
| soramimi | 0:bd865e5a3df3 | 9 | 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, |
| soramimi | 0:bd865e5a3df3 | 10 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, |
| soramimi | 0:bd865e5a3df3 | 11 | 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, |
| soramimi | 0:bd865e5a3df3 | 12 | 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, |
| soramimi | 0:bd865e5a3df3 | 13 | 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, |
| soramimi | 0:bd865e5a3df3 | 14 | 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, |
| soramimi | 0:bd865e5a3df3 | 15 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, |
| soramimi | 0:bd865e5a3df3 | 16 | 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, |
| soramimi | 0:bd865e5a3df3 | 17 | 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, |
| soramimi | 0:bd865e5a3df3 | 18 | 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, |
| soramimi | 0:bd865e5a3df3 | 19 | 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, |
| soramimi | 0:bd865e5a3df3 | 20 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, |
| soramimi | 0:bd865e5a3df3 | 21 | 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, |
| soramimi | 0:bd865e5a3df3 | 22 | 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, |
| soramimi | 0:bd865e5a3df3 | 23 | 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, |
| soramimi | 0:bd865e5a3df3 | 24 | 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, |
| soramimi | 0:bd865e5a3df3 | 25 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, |
| soramimi | 0:bd865e5a3df3 | 26 | 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, |
| soramimi | 0:bd865e5a3df3 | 27 | 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, |
| soramimi | 0:bd865e5a3df3 | 28 | 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, |
| soramimi | 0:bd865e5a3df3 | 29 | 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, |
| soramimi | 0:bd865e5a3df3 | 30 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, |
| soramimi | 0:bd865e5a3df3 | 31 | 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, |
| soramimi | 0:bd865e5a3df3 | 32 | 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, |
| soramimi | 0:bd865e5a3df3 | 33 | 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, |
| soramimi | 0:bd865e5a3df3 | 34 | 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, |
| soramimi | 0:bd865e5a3df3 | 35 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, |
| soramimi | 0:bd865e5a3df3 | 36 | 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, |
| soramimi | 0:bd865e5a3df3 | 37 | 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, |
| soramimi | 0:bd865e5a3df3 | 38 | 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, |
| soramimi | 0:bd865e5a3df3 | 39 | 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, |
| soramimi | 0:bd865e5a3df3 | 40 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, |
| soramimi | 0:bd865e5a3df3 | 41 | 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, |
| soramimi | 0:bd865e5a3df3 | 42 | 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, |
| soramimi | 0:bd865e5a3df3 | 43 | 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, |
| soramimi | 0:bd865e5a3df3 | 44 | 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, |
| soramimi | 0:bd865e5a3df3 | 45 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, |
| soramimi | 0:bd865e5a3df3 | 46 | 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, |
| soramimi | 0:bd865e5a3df3 | 47 | 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, |
| soramimi | 0:bd865e5a3df3 | 48 | 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, |
| soramimi | 0:bd865e5a3df3 | 49 | 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, |
| soramimi | 0:bd865e5a3df3 | 50 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, |
| soramimi | 0:bd865e5a3df3 | 51 | 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, |
| soramimi | 0:bd865e5a3df3 | 52 | 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, |
| soramimi | 0:bd865e5a3df3 | 53 | 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, |
| soramimi | 0:bd865e5a3df3 | 54 | 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, |
| soramimi | 0:bd865e5a3df3 | 55 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, |
| soramimi | 0:bd865e5a3df3 | 56 | 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, |
| soramimi | 0:bd865e5a3df3 | 57 | 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, |
| soramimi | 0:bd865e5a3df3 | 58 | 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, |
| soramimi | 0:bd865e5a3df3 | 59 | 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, |
| soramimi | 0:bd865e5a3df3 | 60 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, |
| soramimi | 0:bd865e5a3df3 | 61 | 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, |
| soramimi | 0:bd865e5a3df3 | 62 | 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, |
| soramimi | 0:bd865e5a3df3 | 63 | 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, |
| soramimi | 0:bd865e5a3df3 | 64 | 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, |
| soramimi | 0:bd865e5a3df3 | 65 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, |
| soramimi | 0:bd865e5a3df3 | 66 | 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, |
| soramimi | 0:bd865e5a3df3 | 67 | 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, |
| soramimi | 0:bd865e5a3df3 | 68 | 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d, |
| soramimi | 0:bd865e5a3df3 | 69 | }; |
| soramimi | 0:bd865e5a3df3 | 70 | |
| soramimi | 0:bd865e5a3df3 | 71 | unsigned long crc32(unsigned long crc, unsigned char const *ptr, size_t len) |
| soramimi | 0:bd865e5a3df3 | 72 | { |
| soramimi | 0:bd865e5a3df3 | 73 | crc = ~crc; |
| soramimi | 0:bd865e5a3df3 | 74 | while (len > 0) { |
| soramimi | 0:bd865e5a3df3 | 75 | crc = crc32_table[(crc ^ *ptr) & 255] ^ (crc >> 8); |
| soramimi | 0:bd865e5a3df3 | 76 | ptr++; |
| soramimi | 0:bd865e5a3df3 | 77 | len--; |
| soramimi | 0:bd865e5a3df3 | 78 | } |
| soramimi | 0:bd865e5a3df3 | 79 | return ~crc; |
| soramimi | 0:bd865e5a3df3 | 80 | } |