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fix multiplayer audio bug caused by editing usercmd
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,178 @@ | ||
| //========= Copyright Valve Corporation, All rights reserved. ============// | ||
| // | ||
| // Purpose: Generic CRC functions | ||
| // | ||
| //=============================================================================// | ||
|
|
||
| #include "checksum_crc.h" | ||
|
|
||
| #define CRC32_INIT_VALUE 0xFFFFFFFFUL | ||
| #define CRC32_XOR_VALUE 0xFFFFFFFFUL | ||
|
|
||
| #define NUM_BYTES 256 | ||
|
|
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| #define LittleLong( val ) ( val ) | ||
|
|
||
| static const CRC32_t pulCRCTable[NUM_BYTES] = | ||
| { | ||
| 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, | ||
| 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, | ||
| 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, | ||
| 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, | ||
| 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, | ||
| 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, | ||
| 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, | ||
| 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, | ||
| 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, | ||
| 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, | ||
| 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, | ||
| 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, | ||
| 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, | ||
| 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, | ||
| 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, | ||
| 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, | ||
| 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, | ||
| 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, | ||
| 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, | ||
| 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, | ||
| 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, | ||
| 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, | ||
| 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, | ||
| 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, | ||
| 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, | ||
| 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, | ||
| 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, | ||
| 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, | ||
| 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, | ||
| 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, | ||
| 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, | ||
| 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, | ||
| 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, | ||
| 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, | ||
| 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, | ||
| 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, | ||
| 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, | ||
| 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, | ||
| 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, | ||
| 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, | ||
| 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, | ||
| 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, | ||
| 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, | ||
| 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, | ||
| 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, | ||
| 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, | ||
| 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, | ||
| 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, | ||
| 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, | ||
| 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, | ||
| 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, | ||
| 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, | ||
| 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, | ||
| 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, | ||
| 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, | ||
| 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, | ||
| 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, | ||
| 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, | ||
| 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, | ||
| 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, | ||
| 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, | ||
| 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, | ||
| 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, | ||
| 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d | ||
| }; | ||
|
|
||
| void CRC32_Init(CRC32_t *pulCRC) | ||
| { | ||
| *pulCRC = CRC32_INIT_VALUE; | ||
| } | ||
|
|
||
| void CRC32_Final(CRC32_t *pulCRC) | ||
| { | ||
| *pulCRC ^= CRC32_XOR_VALUE; | ||
| } | ||
|
|
||
| CRC32_t CRC32_GetTableEntry( unsigned int slot ) | ||
| { | ||
| return pulCRCTable[(unsigned char)slot]; | ||
| } | ||
|
|
||
| void CRC32_ProcessBuffer(CRC32_t *pulCRC, const void *pBuffer, int nBuffer) | ||
| { | ||
| CRC32_t ulCrc = *pulCRC; | ||
| unsigned char *pb = (unsigned char *)pBuffer; | ||
| unsigned int nFront; | ||
| int nMain; | ||
|
|
||
| JustAfew: | ||
|
|
||
| switch (nBuffer) | ||
| { | ||
| case 7: | ||
| ulCrc = pulCRCTable[*pb++ ^ (unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
|
|
||
| case 6: | ||
| ulCrc = pulCRCTable[*pb++ ^ (unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
|
|
||
| case 5: | ||
| ulCrc = pulCRCTable[*pb++ ^ (unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
|
|
||
| case 4: | ||
| ulCrc ^= LittleLong( *(CRC32_t *)pb ); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| *pulCRC = ulCrc; | ||
| return; | ||
|
|
||
| case 3: | ||
| ulCrc = pulCRCTable[*pb++ ^ (unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
|
|
||
| case 2: | ||
| ulCrc = pulCRCTable[*pb++ ^ (unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
|
|
||
| case 1: | ||
| ulCrc = pulCRCTable[*pb++ ^ (unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
|
|
||
| case 0: | ||
| *pulCRC = ulCrc; | ||
| return; | ||
| } | ||
|
|
||
| // We may need to do some alignment work up front, and at the end, so that | ||
| // the main loop is aligned and only has to worry about 8 byte at a time. | ||
| // | ||
| // The low-order two bits of pb and nBuffer in total control the | ||
| // upfront work. | ||
| // | ||
| nFront = ((unsigned int)pb) & 3; | ||
| nBuffer -= nFront; | ||
| switch (nFront) | ||
| { | ||
| case 3: | ||
| ulCrc = pulCRCTable[*pb++ ^ (unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| case 2: | ||
| ulCrc = pulCRCTable[*pb++ ^ (unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| case 1: | ||
| ulCrc = pulCRCTable[*pb++ ^ (unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| } | ||
|
|
||
| nMain = nBuffer >> 3; | ||
| while (nMain--) | ||
| { | ||
| ulCrc ^= LittleLong( *(CRC32_t *)pb ); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| ulCrc ^= LittleLong( *(CRC32_t *)(pb + 4) ); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| ulCrc = pulCRCTable[(unsigned char)ulCrc] ^ (ulCrc >> 8); | ||
| pb += 8; | ||
| } | ||
|
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||
| nBuffer &= 7; | ||
| goto JustAfew; | ||
| } |
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