Commit bc82844d authored by Robert Kausch's avatar Robert Kausch
Browse files

Switch to slicing-by-8 CRC32 algorithm.

parent c8391c2b
......@@ -4,7 +4,7 @@ AM_CPPFLAGS = -I$(top_srcdir)/include -I$(top_builddir)/include
lib_LTLIBRARIES = libogg.la
libogg_la_SOURCES = framing.c bitwise.c
libogg_la_SOURCES = framing.c bitwise.c crctable.h
libogg_la_LDFLAGS = -no-undefined -version-info @LIB_CURRENT@:@LIB_REVISION@:@LIB_AGE@
# build and run the self tests on 'make check'
......@@ -14,7 +14,7 @@ noinst_PROGRAMS = test_bitwise test_framing
test_bitwise_SOURCES = bitwise.c
test_bitwise_CFLAGS = -D_V_SELFTEST
test_framing_SOURCES = framing.c
test_framing_SOURCES = framing.c crctable.h
test_framing_CFLAGS = -D_V_SELFTEST
check: $(noinst_PROGRAMS)
......
/********************************************************************
* *
* THIS FILE IS PART OF THE Ogg CONTAINER SOURCE CODE. *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2018 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************/
#include <ogg/os_types.h>
static const ogg_uint32_t crc_lookup[8][256]={
{0x00000000,0x04c11db7,0x09823b6e,0x0d4326d9,0x130476dc,0x17c56b6b,0x1a864db2,0x1e475005,
0x2608edb8,0x22c9f00f,0x2f8ad6d6,0x2b4bcb61,0x350c9b64,0x31cd86d3,0x3c8ea00a,0x384fbdbd,
0x4c11db70,0x48d0c6c7,0x4593e01e,0x4152fda9,0x5f15adac,0x5bd4b01b,0x569796c2,0x52568b75,
0x6a1936c8,0x6ed82b7f,0x639b0da6,0x675a1011,0x791d4014,0x7ddc5da3,0x709f7b7a,0x745e66cd,
0x9823b6e0,0x9ce2ab57,0x91a18d8e,0x95609039,0x8b27c03c,0x8fe6dd8b,0x82a5fb52,0x8664e6e5,
0xbe2b5b58,0xbaea46ef,0xb7a96036,0xb3687d81,0xad2f2d84,0xa9ee3033,0xa4ad16ea,0xa06c0b5d,
0xd4326d90,0xd0f37027,0xddb056fe,0xd9714b49,0xc7361b4c,0xc3f706fb,0xceb42022,0xca753d95,
0xf23a8028,0xf6fb9d9f,0xfbb8bb46,0xff79a6f1,0xe13ef6f4,0xe5ffeb43,0xe8bccd9a,0xec7dd02d,
0x34867077,0x30476dc0,0x3d044b19,0x39c556ae,0x278206ab,0x23431b1c,0x2e003dc5,0x2ac12072,
0x128e9dcf,0x164f8078,0x1b0ca6a1,0x1fcdbb16,0x018aeb13,0x054bf6a4,0x0808d07d,0x0cc9cdca,
0x7897ab07,0x7c56b6b0,0x71159069,0x75d48dde,0x6b93dddb,0x6f52c06c,0x6211e6b5,0x66d0fb02,
0x5e9f46bf,0x5a5e5b08,0x571d7dd1,0x53dc6066,0x4d9b3063,0x495a2dd4,0x44190b0d,0x40d816ba,
0xaca5c697,0xa864db20,0xa527fdf9,0xa1e6e04e,0xbfa1b04b,0xbb60adfc,0xb6238b25,0xb2e29692,
0x8aad2b2f,0x8e6c3698,0x832f1041,0x87ee0df6,0x99a95df3,0x9d684044,0x902b669d,0x94ea7b2a,
0xe0b41de7,0xe4750050,0xe9362689,0xedf73b3e,0xf3b06b3b,0xf771768c,0xfa325055,0xfef34de2,
0xc6bcf05f,0xc27dede8,0xcf3ecb31,0xcbffd686,0xd5b88683,0xd1799b34,0xdc3abded,0xd8fba05a,
0x690ce0ee,0x6dcdfd59,0x608edb80,0x644fc637,0x7a089632,0x7ec98b85,0x738aad5c,0x774bb0eb,
0x4f040d56,0x4bc510e1,0x46863638,0x42472b8f,0x5c007b8a,0x58c1663d,0x558240e4,0x51435d53,
0x251d3b9e,0x21dc2629,0x2c9f00f0,0x285e1d47,0x36194d42,0x32d850f5,0x3f9b762c,0x3b5a6b9b,
0x0315d626,0x07d4cb91,0x0a97ed48,0x0e56f0ff,0x1011a0fa,0x14d0bd4d,0x19939b94,0x1d528623,
0xf12f560e,0xf5ee4bb9,0xf8ad6d60,0xfc6c70d7,0xe22b20d2,0xe6ea3d65,0xeba91bbc,0xef68060b,
0xd727bbb6,0xd3e6a601,0xdea580d8,0xda649d6f,0xc423cd6a,0xc0e2d0dd,0xcda1f604,0xc960ebb3,
0xbd3e8d7e,0xb9ff90c9,0xb4bcb610,0xb07daba7,0xae3afba2,0xaafbe615,0xa7b8c0cc,0xa379dd7b,
0x9b3660c6,0x9ff77d71,0x92b45ba8,0x9675461f,0x8832161a,0x8cf30bad,0x81b02d74,0x857130c3,
0x5d8a9099,0x594b8d2e,0x5408abf7,0x50c9b640,0x4e8ee645,0x4a4ffbf2,0x470cdd2b,0x43cdc09c,
0x7b827d21,0x7f436096,0x7200464f,0x76c15bf8,0x68860bfd,0x6c47164a,0x61043093,0x65c52d24,
0x119b4be9,0x155a565e,0x18197087,0x1cd86d30,0x029f3d35,0x065e2082,0x0b1d065b,0x0fdc1bec,
0x3793a651,0x3352bbe6,0x3e119d3f,0x3ad08088,0x2497d08d,0x2056cd3a,0x2d15ebe3,0x29d4f654,
0xc5a92679,0xc1683bce,0xcc2b1d17,0xc8ea00a0,0xd6ad50a5,0xd26c4d12,0xdf2f6bcb,0xdbee767c,
0xe3a1cbc1,0xe760d676,0xea23f0af,0xeee2ed18,0xf0a5bd1d,0xf464a0aa,0xf9278673,0xfde69bc4,
0x89b8fd09,0x8d79e0be,0x803ac667,0x84fbdbd0,0x9abc8bd5,0x9e7d9662,0x933eb0bb,0x97ffad0c,
0xafb010b1,0xab710d06,0xa6322bdf,0xa2f33668,0xbcb4666d,0xb8757bda,0xb5365d03,0xb1f740b4},
{0x00000000,0xd219c1dc,0xa0f29e0f,0x72eb5fd3,0x452421a9,0x973de075,0xe5d6bfa6,0x37cf7e7a,
0x8a484352,0x5851828e,0x2abadd5d,0xf8a31c81,0xcf6c62fb,0x1d75a327,0x6f9efcf4,0xbd873d28,
0x10519b13,0xc2485acf,0xb0a3051c,0x62bac4c0,0x5575baba,0x876c7b66,0xf58724b5,0x279ee569,
0x9a19d841,0x4800199d,0x3aeb464e,0xe8f28792,0xdf3df9e8,0x0d243834,0x7fcf67e7,0xadd6a63b,
0x20a33626,0xf2baf7fa,0x8051a829,0x524869f5,0x6587178f,0xb79ed653,0xc5758980,0x176c485c,
0xaaeb7574,0x78f2b4a8,0x0a19eb7b,0xd8002aa7,0xefcf54dd,0x3dd69501,0x4f3dcad2,0x9d240b0e,
0x30f2ad35,0xe2eb6ce9,0x9000333a,0x4219f2e6,0x75d68c9c,0xa7cf4d40,0xd5241293,0x073dd34f,
0xbabaee67,0x68a32fbb,0x1a487068,0xc851b1b4,0xff9ecfce,0x2d870e12,0x5f6c51c1,0x8d75901d,
0x41466c4c,0x935fad90,0xe1b4f243,0x33ad339f,0x04624de5,0xd67b8c39,0xa490d3ea,0x76891236,
0xcb0e2f1e,0x1917eec2,0x6bfcb111,0xb9e570cd,0x8e2a0eb7,0x5c33cf6b,0x2ed890b8,0xfcc15164,
0x5117f75f,0x830e3683,0xf1e56950,0x23fca88c,0x1433d6f6,0xc62a172a,0xb4c148f9,0x66d88925,
0xdb5fb40d,0x094675d1,0x7bad2a02,0xa9b4ebde,0x9e7b95a4,0x4c625478,0x3e890bab,0xec90ca77,
0x61e55a6a,0xb3fc9bb6,0xc117c465,0x130e05b9,0x24c17bc3,0xf6d8ba1f,0x8433e5cc,0x562a2410,
0xebad1938,0x39b4d8e4,0x4b5f8737,0x994646eb,0xae893891,0x7c90f94d,0x0e7ba69e,0xdc626742,
0x71b4c179,0xa3ad00a5,0xd1465f76,0x035f9eaa,0x3490e0d0,0xe689210c,0x94627edf,0x467bbf03,
0xfbfc822b,0x29e543f7,0x5b0e1c24,0x8917ddf8,0xbed8a382,0x6cc1625e,0x1e2a3d8d,0xcc33fc51,
0x828cd898,0x50951944,0x227e4697,0xf067874b,0xc7a8f931,0x15b138ed,0x675a673e,0xb543a6e2,
0x08c49bca,0xdadd5a16,0xa83605c5,0x7a2fc419,0x4de0ba63,0x9ff97bbf,0xed12246c,0x3f0be5b0,
0x92dd438b,0x40c48257,0x322fdd84,0xe0361c58,0xd7f96222,0x05e0a3fe,0x770bfc2d,0xa5123df1,
0x189500d9,0xca8cc105,0xb8679ed6,0x6a7e5f0a,0x5db12170,0x8fa8e0ac,0xfd43bf7f,0x2f5a7ea3,
0xa22feebe,0x70362f62,0x02dd70b1,0xd0c4b16d,0xe70bcf17,0x35120ecb,0x47f95118,0x95e090c4,
0x2867adec,0xfa7e6c30,0x889533e3,0x5a8cf23f,0x6d438c45,0xbf5a4d99,0xcdb1124a,0x1fa8d396,
0xb27e75ad,0x6067b471,0x128ceba2,0xc0952a7e,0xf75a5404,0x254395d8,0x57a8ca0b,0x85b10bd7,
0x383636ff,0xea2ff723,0x98c4a8f0,0x4add692c,0x7d121756,0xaf0bd68a,0xdde08959,0x0ff94885,
0xc3cab4d4,0x11d37508,0x63382adb,0xb121eb07,0x86ee957d,0x54f754a1,0x261c0b72,0xf405caae,
0x4982f786,0x9b9b365a,0xe9706989,0x3b69a855,0x0ca6d62f,0xdebf17f3,0xac544820,0x7e4d89fc,
0xd39b2fc7,0x0182ee1b,0x7369b1c8,0xa1707014,0x96bf0e6e,0x44a6cfb2,0x364d9061,0xe45451bd,
0x59d36c95,0x8bcaad49,0xf921f29a,0x2b383346,0x1cf74d3c,0xceee8ce0,0xbc05d333,0x6e1c12ef,
0xe36982f2,0x3170432e,0x439b1cfd,0x9182dd21,0xa64da35b,0x74546287,0x06bf3d54,0xd4a6fc88,
0x6921c1a0,0xbb38007c,0xc9d35faf,0x1bca9e73,0x2c05e009,0xfe1c21d5,0x8cf77e06,0x5eeebfda,
0xf33819e1,0x2121d83d,0x53ca87ee,0x81d34632,0xb61c3848,0x6405f994,0x16eea647,0xc4f7679b,
0x79705ab3,0xab699b6f,0xd982c4bc,0x0b9b0560,0x3c547b1a,0xee4dbac6,0x9ca6e515,0x4ebf24c9},
{0x00000000,0x01d8ac87,0x03b1590e,0x0269f589,0x0762b21c,0x06ba1e9b,0x04d3eb12,0x050b4795,
0x0ec56438,0x0f1dc8bf,0x0d743d36,0x0cac91b1,0x09a7d624,0x087f7aa3,0x0a168f2a,0x0bce23ad,
0x1d8ac870,0x1c5264f7,0x1e3b917e,0x1fe33df9,0x1ae87a6c,0x1b30d6eb,0x19592362,0x18818fe5,
0x134fac48,0x129700cf,0x10fef546,0x112659c1,0x142d1e54,0x15f5b2d3,0x179c475a,0x1644ebdd,
0x3b1590e0,0x3acd3c67,0x38a4c9ee,0x397c6569,0x3c7722fc,0x3daf8e7b,0x3fc67bf2,0x3e1ed775,
0x35d0f4d8,0x3408585f,0x3661add6,0x37b90151,0x32b246c4,0x336aea43,0x31031fca,0x30dbb34d,
0x269f5890,0x2747f417,0x252e019e,0x24f6ad19,0x21fdea8c,0x2025460b,0x224cb382,0x23941f05,
0x285a3ca8,0x2982902f,0x2beb65a6,0x2a33c921,0x2f388eb4,0x2ee02233,0x2c89d7ba,0x2d517b3d,
0x762b21c0,0x77f38d47,0x759a78ce,0x7442d449,0x714993dc,0x70913f5b,0x72f8cad2,0x73206655,
0x78ee45f8,0x7936e97f,0x7b5f1cf6,0x7a87b071,0x7f8cf7e4,0x7e545b63,0x7c3daeea,0x7de5026d,
0x6ba1e9b0,0x6a794537,0x6810b0be,0x69c81c39,0x6cc35bac,0x6d1bf72b,0x6f7202a2,0x6eaaae25,
0x65648d88,0x64bc210f,0x66d5d486,0x670d7801,0x62063f94,0x63de9313,0x61b7669a,0x606fca1d,
0x4d3eb120,0x4ce61da7,0x4e8fe82e,0x4f5744a9,0x4a5c033c,0x4b84afbb,0x49ed5a32,0x4835f6b5,
0x43fbd518,0x4223799f,0x404a8c16,0x41922091,0x44996704,0x4541cb83,0x47283e0a,0x46f0928d,
0x50b47950,0x516cd5d7,0x5305205e,0x52dd8cd9,0x57d6cb4c,0x560e67cb,0x54679242,0x55bf3ec5,
0x5e711d68,0x5fa9b1ef,0x5dc04466,0x5c18e8e1,0x5913af74,0x58cb03f3,0x5aa2f67a,0x5b7a5afd,
0xec564380,0xed8eef07,0xefe71a8e,0xee3fb609,0xeb34f19c,0xeaec5d1b,0xe885a892,0xe95d0415,
0xe29327b8,0xe34b8b3f,0xe1227eb6,0xe0fad231,0xe5f195a4,0xe4293923,0xe640ccaa,0xe798602d,
0xf1dc8bf0,0xf0042777,0xf26dd2fe,0xf3b57e79,0xf6be39ec,0xf766956b,0xf50f60e2,0xf4d7cc65,
0xff19efc8,0xfec1434f,0xfca8b6c6,0xfd701a41,0xf87b5dd4,0xf9a3f153,0xfbca04da,0xfa12a85d,
0xd743d360,0xd69b7fe7,0xd4f28a6e,0xd52a26e9,0xd021617c,0xd1f9cdfb,0xd3903872,0xd24894f5,
0xd986b758,0xd85e1bdf,0xda37ee56,0xdbef42d1,0xdee40544,0xdf3ca9c3,0xdd555c4a,0xdc8df0cd,
0xcac91b10,0xcb11b797,0xc978421e,0xc8a0ee99,0xcdaba90c,0xcc73058b,0xce1af002,0xcfc25c85,
0xc40c7f28,0xc5d4d3af,0xc7bd2626,0xc6658aa1,0xc36ecd34,0xc2b661b3,0xc0df943a,0xc10738bd,
0x9a7d6240,0x9ba5cec7,0x99cc3b4e,0x981497c9,0x9d1fd05c,0x9cc77cdb,0x9eae8952,0x9f7625d5,
0x94b80678,0x9560aaff,0x97095f76,0x96d1f3f1,0x93dab464,0x920218e3,0x906bed6a,0x91b341ed,
0x87f7aa30,0x862f06b7,0x8446f33e,0x859e5fb9,0x8095182c,0x814db4ab,0x83244122,0x82fceda5,
0x8932ce08,0x88ea628f,0x8a839706,0x8b5b3b81,0x8e507c14,0x8f88d093,0x8de1251a,0x8c39899d,
0xa168f2a0,0xa0b05e27,0xa2d9abae,0xa3010729,0xa60a40bc,0xa7d2ec3b,0xa5bb19b2,0xa463b535,
0xafad9698,0xae753a1f,0xac1ccf96,0xadc46311,0xa8cf2484,0xa9178803,0xab7e7d8a,0xaaa6d10d,
0xbce23ad0,0xbd3a9657,0xbf5363de,0xbe8bcf59,0xbb8088cc,0xba58244b,0xb831d1c2,0xb9e97d45,
0xb2275ee8,0xb3fff26f,0xb19607e6,0xb04eab61,0xb545ecf4,0xb49d4073,0xb6f4b5fa,0xb72c197d},
{0x00000000,0xdc6d9ab7,0xbc1a28d9,0x6077b26e,0x7cf54c05,0xa098d6b2,0xc0ef64dc,0x1c82fe6b,
0xf9ea980a,0x258702bd,0x45f0b0d3,0x999d2a64,0x851fd40f,0x59724eb8,0x3905fcd6,0xe5686661,
0xf7142da3,0x2b79b714,0x4b0e057a,0x97639fcd,0x8be161a6,0x578cfb11,0x37fb497f,0xeb96d3c8,
0x0efeb5a9,0xd2932f1e,0xb2e49d70,0x6e8907c7,0x720bf9ac,0xae66631b,0xce11d175,0x127c4bc2,
0xeae946f1,0x3684dc46,0x56f36e28,0x8a9ef49f,0x961c0af4,0x4a719043,0x2a06222d,0xf66bb89a,
0x1303defb,0xcf6e444c,0xaf19f622,0x73746c95,0x6ff692fe,0xb39b0849,0xd3ecba27,0x0f812090,
0x1dfd6b52,0xc190f1e5,0xa1e7438b,0x7d8ad93c,0x61082757,0xbd65bde0,0xdd120f8e,0x017f9539,
0xe417f358,0x387a69ef,0x580ddb81,0x84604136,0x98e2bf5d,0x448f25ea,0x24f89784,0xf8950d33,
0xd1139055,0x0d7e0ae2,0x6d09b88c,0xb164223b,0xade6dc50,0x718b46e7,0x11fcf489,0xcd916e3e,
0x28f9085f,0xf49492e8,0x94e32086,0x488eba31,0x540c445a,0x8861deed,0xe8166c83,0x347bf634,
0x2607bdf6,0xfa6a2741,0x9a1d952f,0x46700f98,0x5af2f1f3,0x869f6b44,0xe6e8d92a,0x3a85439d,
0xdfed25fc,0x0380bf4b,0x63f70d25,0xbf9a9792,0xa31869f9,0x7f75f34e,0x1f024120,0xc36fdb97,
0x3bfad6a4,0xe7974c13,0x87e0fe7d,0x5b8d64ca,0x470f9aa1,0x9b620016,0xfb15b278,0x277828cf,
0xc2104eae,0x1e7dd419,0x7e0a6677,0xa267fcc0,0xbee502ab,0x6288981c,0x02ff2a72,0xde92b0c5,
0xcceefb07,0x108361b0,0x70f4d3de,0xac994969,0xb01bb702,0x6c762db5,0x0c019fdb,0xd06c056c,
0x3504630d,0xe969f9ba,0x891e4bd4,0x5573d163,0x49f12f08,0x959cb5bf,0xf5eb07d1,0x29869d66,
0xa6e63d1d,0x7a8ba7aa,0x1afc15c4,0xc6918f73,0xda137118,0x067eebaf,0x660959c1,0xba64c376,
0x5f0ca517,0x83613fa0,0xe3168dce,0x3f7b1779,0x23f9e912,0xff9473a5,0x9fe3c1cb,0x438e5b7c,
0x51f210be,0x8d9f8a09,0xede83867,0x3185a2d0,0x2d075cbb,0xf16ac60c,0x911d7462,0x4d70eed5,
0xa81888b4,0x74751203,0x1402a06d,0xc86f3ada,0xd4edc4b1,0x08805e06,0x68f7ec68,0xb49a76df,
0x4c0f7bec,0x9062e15b,0xf0155335,0x2c78c982,0x30fa37e9,0xec97ad5e,0x8ce01f30,0x508d8587,
0xb5e5e3e6,0x69887951,0x09ffcb3f,0xd5925188,0xc910afe3,0x157d3554,0x750a873a,0xa9671d8d,
0xbb1b564f,0x6776ccf8,0x07017e96,0xdb6ce421,0xc7ee1a4a,0x1b8380fd,0x7bf43293,0xa799a824,
0x42f1ce45,0x9e9c54f2,0xfeebe69c,0x22867c2b,0x3e048240,0xe26918f7,0x821eaa99,0x5e73302e,
0x77f5ad48,0xab9837ff,0xcbef8591,0x17821f26,0x0b00e14d,0xd76d7bfa,0xb71ac994,0x6b775323,
0x8e1f3542,0x5272aff5,0x32051d9b,0xee68872c,0xf2ea7947,0x2e87e3f0,0x4ef0519e,0x929dcb29,
0x80e180eb,0x5c8c1a5c,0x3cfba832,0xe0963285,0xfc14ccee,0x20795659,0x400ee437,0x9c637e80,
0x790b18e1,0xa5668256,0xc5113038,0x197caa8f,0x05fe54e4,0xd993ce53,0xb9e47c3d,0x6589e68a,
0x9d1cebb9,0x4171710e,0x2106c360,0xfd6b59d7,0xe1e9a7bc,0x3d843d0b,0x5df38f65,0x819e15d2,
0x64f673b3,0xb89be904,0xd8ec5b6a,0x0481c1dd,0x18033fb6,0xc46ea501,0xa419176f,0x78748dd8,
0x6a08c61a,0xb6655cad,0xd612eec3,0x0a7f7474,0x16fd8a1f,0xca9010a8,0xaae7a2c6,0x768a3871,
0x93e25e10,0x4f8fc4a7,0x2ff876c9,0xf395ec7e,0xef171215,0x337a88a2,0x530d3acc,0x8f60a07b},
{0x00000000,0x490d678d,0x921acf1a,0xdb17a897,0x20f48383,0x69f9e40e,0xb2ee4c99,0xfbe32b14,
0x41e90706,0x08e4608b,0xd3f3c81c,0x9afeaf91,0x611d8485,0x2810e308,0xf3074b9f,0xba0a2c12,
0x83d20e0c,0xcadf6981,0x11c8c116,0x58c5a69b,0xa3268d8f,0xea2bea02,0x313c4295,0x78312518,
0xc23b090a,0x8b366e87,0x5021c610,0x192ca19d,0xe2cf8a89,0xabc2ed04,0x70d54593,0x39d8221e,
0x036501af,0x4a686622,0x917fceb5,0xd872a938,0x2391822c,0x6a9ce5a1,0xb18b4d36,0xf8862abb,
0x428c06a9,0x0b816124,0xd096c9b3,0x999bae3e,0x6278852a,0x2b75e2a7,0xf0624a30,0xb96f2dbd,
0x80b70fa3,0xc9ba682e,0x12adc0b9,0x5ba0a734,0xa0438c20,0xe94eebad,0x3259433a,0x7b5424b7,
0xc15e08a5,0x88536f28,0x5344c7bf,0x1a49a032,0xe1aa8b26,0xa8a7ecab,0x73b0443c,0x3abd23b1,
0x06ca035e,0x4fc764d3,0x94d0cc44,0xddddabc9,0x263e80dd,0x6f33e750,0xb4244fc7,0xfd29284a,
0x47230458,0x0e2e63d5,0xd539cb42,0x9c34accf,0x67d787db,0x2edae056,0xf5cd48c1,0xbcc02f4c,
0x85180d52,0xcc156adf,0x1702c248,0x5e0fa5c5,0xa5ec8ed1,0xece1e95c,0x37f641cb,0x7efb2646,
0xc4f10a54,0x8dfc6dd9,0x56ebc54e,0x1fe6a2c3,0xe40589d7,0xad08ee5a,0x761f46cd,0x3f122140,
0x05af02f1,0x4ca2657c,0x97b5cdeb,0xdeb8aa66,0x255b8172,0x6c56e6ff,0xb7414e68,0xfe4c29e5,
0x444605f7,0x0d4b627a,0xd65ccaed,0x9f51ad60,0x64b28674,0x2dbfe1f9,0xf6a8496e,0xbfa52ee3,
0x867d0cfd,0xcf706b70,0x1467c3e7,0x5d6aa46a,0xa6898f7e,0xef84e8f3,0x34934064,0x7d9e27e9,
0xc7940bfb,0x8e996c76,0x558ec4e1,0x1c83a36c,0xe7608878,0xae6deff5,0x757a4762,0x3c7720ef,
0x0d9406bc,0x44996131,0x9f8ec9a6,0xd683ae2b,0x2d60853f,0x646de2b2,0xbf7a4a25,0xf6772da8,
0x4c7d01ba,0x05706637,0xde67cea0,0x976aa92d,0x6c898239,0x2584e5b4,0xfe934d23,0xb79e2aae,
0x8e4608b0,0xc74b6f3d,0x1c5cc7aa,0x5551a027,0xaeb28b33,0xe7bfecbe,0x3ca84429,0x75a523a4,
0xcfaf0fb6,0x86a2683b,0x5db5c0ac,0x14b8a721,0xef5b8c35,0xa656ebb8,0x7d41432f,0x344c24a2,
0x0ef10713,0x47fc609e,0x9cebc809,0xd5e6af84,0x2e058490,0x6708e31d,0xbc1f4b8a,0xf5122c07,
0x4f180015,0x06156798,0xdd02cf0f,0x940fa882,0x6fec8396,0x26e1e41b,0xfdf64c8c,0xb4fb2b01,
0x8d23091f,0xc42e6e92,0x1f39c605,0x5634a188,0xadd78a9c,0xe4daed11,0x3fcd4586,0x76c0220b,
0xccca0e19,0x85c76994,0x5ed0c103,0x17dda68e,0xec3e8d9a,0xa533ea17,0x7e244280,0x3729250d,
0x0b5e05e2,0x4253626f,0x9944caf8,0xd049ad75,0x2baa8661,0x62a7e1ec,0xb9b0497b,0xf0bd2ef6,
0x4ab702e4,0x03ba6569,0xd8adcdfe,0x91a0aa73,0x6a438167,0x234ee6ea,0xf8594e7d,0xb15429f0,
0x888c0bee,0xc1816c63,0x1a96c4f4,0x539ba379,0xa878886d,0xe175efe0,0x3a624777,0x736f20fa,
0xc9650ce8,0x80686b65,0x5b7fc3f2,0x1272a47f,0xe9918f6b,0xa09ce8e6,0x7b8b4071,0x328627fc,
0x083b044d,0x413663c0,0x9a21cb57,0xd32cacda,0x28cf87ce,0x61c2e043,0xbad548d4,0xf3d82f59,
0x49d2034b,0x00df64c6,0xdbc8cc51,0x92c5abdc,0x692680c8,0x202be745,0xfb3c4fd2,0xb231285f,
0x8be90a41,0xc2e46dcc,0x19f3c55b,0x50fea2d6,0xab1d89c2,0xe210ee4f,0x390746d8,0x700a2155,
0xca000d47,0x830d6aca,0x581ac25d,0x1117a5d0,0xeaf48ec4,0xa3f9e949,0x78ee41de,0x31e32653},
{0x00000000,0x1b280d78,0x36501af0,0x2d781788,0x6ca035e0,0x77883898,0x5af02f10,0x41d82268,
0xd9406bc0,0xc26866b8,0xef107130,0xf4387c48,0xb5e05e20,0xaec85358,0x83b044d0,0x989849a8,
0xb641ca37,0xad69c74f,0x8011d0c7,0x9b39ddbf,0xdae1ffd7,0xc1c9f2af,0xecb1e527,0xf799e85f,
0x6f01a1f7,0x7429ac8f,0x5951bb07,0x4279b67f,0x03a19417,0x1889996f,0x35f18ee7,0x2ed9839f,
0x684289d9,0x736a84a1,0x5e129329,0x453a9e51,0x04e2bc39,0x1fcab141,0x32b2a6c9,0x299aabb1,
0xb102e219,0xaa2aef61,0x8752f8e9,0x9c7af591,0xdda2d7f9,0xc68ada81,0xebf2cd09,0xf0dac071,
0xde0343ee,0xc52b4e96,0xe853591e,0xf37b5466,0xb2a3760e,0xa98b7b76,0x84f36cfe,0x9fdb6186,
0x0743282e,0x1c6b2556,0x311332de,0x2a3b3fa6,0x6be31dce,0x70cb10b6,0x5db3073e,0x469b0a46,
0xd08513b2,0xcbad1eca,0xe6d50942,0xfdfd043a,0xbc252652,0xa70d2b2a,0x8a753ca2,0x915d31da,
0x09c57872,0x12ed750a,0x3f956282,0x24bd6ffa,0x65654d92,0x7e4d40ea,0x53355762,0x481d5a1a,
0x66c4d985,0x7decd4fd,0x5094c375,0x4bbcce0d,0x0a64ec65,0x114ce11d,0x3c34f695,0x271cfbed,
0xbf84b245,0xa4acbf3d,0x89d4a8b5,0x92fca5cd,0xd32487a5,0xc80c8add,0xe5749d55,0xfe5c902d,
0xb8c79a6b,0xa3ef9713,0x8e97809b,0x95bf8de3,0xd467af8b,0xcf4fa2f3,0xe237b57b,0xf91fb803,
0x6187f1ab,0x7aaffcd3,0x57d7eb5b,0x4cffe623,0x0d27c44b,0x160fc933,0x3b77debb,0x205fd3c3,
0x0e86505c,0x15ae5d24,0x38d64aac,0x23fe47d4,0x622665bc,0x790e68c4,0x54767f4c,0x4f5e7234,
0xd7c63b9c,0xccee36e4,0xe196216c,0xfabe2c14,0xbb660e7c,0xa04e0304,0x8d36148c,0x961e19f4,
0xa5cb3ad3,0xbee337ab,0x939b2023,0x88b32d5b,0xc96b0f33,0xd243024b,0xff3b15c3,0xe41318bb,
0x7c8b5113,0x67a35c6b,0x4adb4be3,0x51f3469b,0x102b64f3,0x0b03698b,0x267b7e03,0x3d53737b,
0x138af0e4,0x08a2fd9c,0x25daea14,0x3ef2e76c,0x7f2ac504,0x6402c87c,0x497adff4,0x5252d28c,
0xcaca9b24,0xd1e2965c,0xfc9a81d4,0xe7b28cac,0xa66aaec4,0xbd42a3bc,0x903ab434,0x8b12b94c,
0xcd89b30a,0xd6a1be72,0xfbd9a9fa,0xe0f1a482,0xa12986ea,0xba018b92,0x97799c1a,0x8c519162,
0x14c9d8ca,0x0fe1d5b2,0x2299c23a,0x39b1cf42,0x7869ed2a,0x6341e052,0x4e39f7da,0x5511faa2,
0x7bc8793d,0x60e07445,0x4d9863cd,0x56b06eb5,0x17684cdd,0x0c4041a5,0x2138562d,0x3a105b55,
0xa28812fd,0xb9a01f85,0x94d8080d,0x8ff00575,0xce28271d,0xd5002a65,0xf8783ded,0xe3503095,
0x754e2961,0x6e662419,0x431e3391,0x58363ee9,0x19ee1c81,0x02c611f9,0x2fbe0671,0x34960b09,
0xac0e42a1,0xb7264fd9,0x9a5e5851,0x81765529,0xc0ae7741,0xdb867a39,0xf6fe6db1,0xedd660c9,
0xc30fe356,0xd827ee2e,0xf55ff9a6,0xee77f4de,0xafafd6b6,0xb487dbce,0x99ffcc46,0x82d7c13e,
0x1a4f8896,0x016785ee,0x2c1f9266,0x37379f1e,0x76efbd76,0x6dc7b00e,0x40bfa786,0x5b97aafe,
0x1d0ca0b8,0x0624adc0,0x2b5cba48,0x3074b730,0x71ac9558,0x6a849820,0x47fc8fa8,0x5cd482d0,
0xc44ccb78,0xdf64c600,0xf21cd188,0xe934dcf0,0xa8ecfe98,0xb3c4f3e0,0x9ebce468,0x8594e910,
0xab4d6a8f,0xb06567f7,0x9d1d707f,0x86357d07,0xc7ed5f6f,0xdcc55217,0xf1bd459f,0xea9548e7,
0x720d014f,0x69250c37,0x445d1bbf,0x5f7516c7,0x1ead34af,0x058539d7,0x28fd2e5f,0x33d52327},
{0x00000000,0x4f576811,0x9eaed022,0xd1f9b833,0x399cbdf3,0x76cbd5e2,0xa7326dd1,0xe86505c0,
0x73397be6,0x3c6e13f7,0xed97abc4,0xa2c0c3d5,0x4aa5c615,0x05f2ae04,0xd40b1637,0x9b5c7e26,
0xe672f7cc,0xa9259fdd,0x78dc27ee,0x378b4fff,0xdfee4a3f,0x90b9222e,0x41409a1d,0x0e17f20c,
0x954b8c2a,0xda1ce43b,0x0be55c08,0x44b23419,0xacd731d9,0xe38059c8,0x3279e1fb,0x7d2e89ea,
0xc824f22f,0x87739a3e,0x568a220d,0x19dd4a1c,0xf1b84fdc,0xbeef27cd,0x6f169ffe,0x2041f7ef,
0xbb1d89c9,0xf44ae1d8,0x25b359eb,0x6ae431fa,0x8281343a,0xcdd65c2b,0x1c2fe418,0x53788c09,
0x2e5605e3,0x61016df2,0xb0f8d5c1,0xffafbdd0,0x17cab810,0x589dd001,0x89646832,0xc6330023,
0x5d6f7e05,0x12381614,0xc3c1ae27,0x8c96c636,0x64f3c3f6,0x2ba4abe7,0xfa5d13d4,0xb50a7bc5,
0x9488f9e9,0xdbdf91f8,0x0a2629cb,0x457141da,0xad14441a,0xe2432c0b,0x33ba9438,0x7cedfc29,
0xe7b1820f,0xa8e6ea1e,0x791f522d,0x36483a3c,0xde2d3ffc,0x917a57ed,0x4083efde,0x0fd487cf,
0x72fa0e25,0x3dad6634,0xec54de07,0xa303b616,0x4b66b3d6,0x0431dbc7,0xd5c863f4,0x9a9f0be5,
0x01c375c3,0x4e941dd2,0x9f6da5e1,0xd03acdf0,0x385fc830,0x7708a021,0xa6f11812,0xe9a67003,
0x5cac0bc6,0x13fb63d7,0xc202dbe4,0x8d55b3f5,0x6530b635,0x2a67de24,0xfb9e6617,0xb4c90e06,
0x2f957020,0x60c21831,0xb13ba002,0xfe6cc813,0x1609cdd3,0x595ea5c2,0x88a71df1,0xc7f075e0,
0xbadefc0a,0xf589941b,0x24702c28,0x6b274439,0x834241f9,0xcc1529e8,0x1dec91db,0x52bbf9ca,
0xc9e787ec,0x86b0effd,0x574957ce,0x181e3fdf,0xf07b3a1f,0xbf2c520e,0x6ed5ea3d,0x2182822c,
0x2dd0ee65,0x62878674,0xb37e3e47,0xfc295656,0x144c5396,0x5b1b3b87,0x8ae283b4,0xc5b5eba5,
0x5ee99583,0x11befd92,0xc04745a1,0x8f102db0,0x67752870,0x28224061,0xf9dbf852,0xb68c9043,
0xcba219a9,0x84f571b8,0x550cc98b,0x1a5ba19a,0xf23ea45a,0xbd69cc4b,0x6c907478,0x23c71c69,
0xb89b624f,0xf7cc0a5e,0x2635b26d,0x6962da7c,0x8107dfbc,0xce50b7ad,0x1fa90f9e,0x50fe678f,
0xe5f41c4a,0xaaa3745b,0x7b5acc68,0x340da479,0xdc68a1b9,0x933fc9a8,0x42c6719b,0x0d91198a,
0x96cd67ac,0xd99a0fbd,0x0863b78e,0x4734df9f,0xaf51da5f,0xe006b24e,0x31ff0a7d,0x7ea8626c,
0x0386eb86,0x4cd18397,0x9d283ba4,0xd27f53b5,0x3a1a5675,0x754d3e64,0xa4b48657,0xebe3ee46,
0x70bf9060,0x3fe8f871,0xee114042,0xa1462853,0x49232d93,0x06744582,0xd78dfdb1,0x98da95a0,
0xb958178c,0xf60f7f9d,0x27f6c7ae,0x68a1afbf,0x80c4aa7f,0xcf93c26e,0x1e6a7a5d,0x513d124c,
0xca616c6a,0x8536047b,0x54cfbc48,0x1b98d459,0xf3fdd199,0xbcaab988,0x6d5301bb,0x220469aa,
0x5f2ae040,0x107d8851,0xc1843062,0x8ed35873,0x66b65db3,0x29e135a2,0xf8188d91,0xb74fe580,
0x2c139ba6,0x6344f3b7,0xb2bd4b84,0xfdea2395,0x158f2655,0x5ad84e44,0x8b21f677,0xc4769e66,
0x717ce5a3,0x3e2b8db2,0xefd23581,0xa0855d90,0x48e05850,0x07b73041,0xd64e8872,0x9919e063,
0x02459e45,0x4d12f654,0x9ceb4e67,0xd3bc2676,0x3bd923b6,0x748e4ba7,0xa577f394,0xea209b85,
0x970e126f,0xd8597a7e,0x09a0c24d,0x46f7aa5c,0xae92af9c,0xe1c5c78d,0x303c7fbe,0x7f6b17af,
0xe4376989,0xab600198,0x7a99b9ab,0x35ced1ba,0xddabd47a,0x92fcbc6b,0x43050458,0x0c526c49},
{0x00000000,0x5ba1dcca,0xb743b994,0xece2655e,0x6a466e9f,0x31e7b255,0xdd05d70b,0x86a40bc1,
0xd48cdd3e,0x8f2d01f4,0x63cf64aa,0x386eb860,0xbecab3a1,0xe56b6f6b,0x09890a35,0x5228d6ff,
0xadd8a7cb,0xf6797b01,0x1a9b1e5f,0x413ac295,0xc79ec954,0x9c3f159e,0x70dd70c0,0x2b7cac0a,
0x79547af5,0x22f5a63f,0xce17c361,0x95b61fab,0x1312146a,0x48b3c8a0,0xa451adfe,0xfff07134,
0x5f705221,0x04d18eeb,0xe833ebb5,0xb392377f,0x35363cbe,0x6e97e074,0x8275852a,0xd9d459e0,
0x8bfc8f1f,0xd05d53d5,0x3cbf368b,0x671eea41,0xe1bae180,0xba1b3d4a,0x56f95814,0x0d5884de,
0xf2a8f5ea,0xa9092920,0x45eb4c7e,0x1e4a90b4,0x98ee9b75,0xc34f47bf,0x2fad22e1,0x740cfe2b,
0x262428d4,0x7d85f41e,0x91679140,0xcac64d8a,0x4c62464b,0x17c39a81,0xfb21ffdf,0xa0802315,
0xbee0a442,0xe5417888,0x09a31dd6,0x5202c11c,0xd4a6cadd,0x8f071617,0x63e57349,0x3844af83,
0x6a6c797c,0x31cda5b6,0xdd2fc0e8,0x868e1c22,0x002a17e3,0x5b8bcb29,0xb769ae77,0xecc872bd,
0x13380389,0x4899df43,0xa47bba1d,0xffda66d7,0x797e6d16,0x22dfb1dc,0xce3dd482,0x959c0848,
0xc7b4deb7,0x9c15027d,0x70f76723,0x2b56bbe9,0xadf2b028,0xf6536ce2,0x1ab109bc,0x4110d576,
0xe190f663,0xba312aa9,0x56d34ff7,0x0d72933d,0x8bd698fc,0xd0774436,0x3c952168,0x6734fda2,
0x351c2b5d,0x6ebdf797,0x825f92c9,0xd9fe4e03,0x5f5a45c2,0x04fb9908,0xe819fc56,0xb3b8209c,
0x4c4851a8,0x17e98d62,0xfb0be83c,0xa0aa34f6,0x260e3f37,0x7dafe3fd,0x914d86a3,0xcaec5a69,
0x98c48c96,0xc365505c,0x2f873502,0x7426e9c8,0xf282e209,0xa9233ec3,0x45c15b9d,0x1e608757,
0x79005533,0x22a189f9,0xce43eca7,0x95e2306d,0x13463bac,0x48e7e766,0xa4058238,0xffa45ef2,
0xad8c880d,0xf62d54c7,0x1acf3199,0x416eed53,0xc7cae692,0x9c6b3a58,0x70895f06,0x2b2883cc,
0xd4d8f2f8,0x8f792e32,0x639b4b6c,0x383a97a6,0xbe9e9c67,0xe53f40ad,0x09dd25f3,0x527cf939,
0x00542fc6,0x5bf5f30c,0xb7179652,0xecb64a98,0x6a124159,0x31b39d93,0xdd51f8cd,0x86f02407,
0x26700712,0x7dd1dbd8,0x9133be86,0xca92624c,0x4c36698d,0x1797b547,0xfb75d019,0xa0d40cd3,
0xf2fcda2c,0xa95d06e6,0x45bf63b8,0x1e1ebf72,0x98bab4b3,0xc31b6879,0x2ff90d27,0x7458d1ed,
0x8ba8a0d9,0xd0097c13,0x3ceb194d,0x674ac587,0xe1eece46,0xba4f128c,0x56ad77d2,0x0d0cab18,
0x5f247de7,0x0485a12d,0xe867c473,0xb3c618b9,0x35621378,0x6ec3cfb2,0x8221aaec,0xd9807626,
0xc7e0f171,0x9c412dbb,0x70a348e5,0x2b02942f,0xada69fee,0xf6074324,0x1ae5267a,0x4144fab0,
0x136c2c4f,0x48cdf085,0xa42f95db,0xff8e4911,0x792a42d0,0x228b9e1a,0xce69fb44,0x95c8278e,
0x6a3856ba,0x31998a70,0xdd7bef2e,0x86da33e4,0x007e3825,0x5bdfe4ef,0xb73d81b1,0xec9c5d7b,
0xbeb48b84,0xe515574e,0x09f73210,0x5256eeda,0xd4f2e51b,0x8f5339d1,0x63b15c8f,0x38108045,
0x9890a350,0xc3317f9a,0x2fd31ac4,0x7472c60e,0xf2d6cdcf,0xa9771105,0x4595745b,0x1e34a891,
0x4c1c7e6e,0x17bda2a4,0xfb5fc7fa,0xa0fe1b30,0x265a10f1,0x7dfbcc3b,0x9119a965,0xcab875af,
0x3548049b,0x6ee9d851,0x820bbd0f,0xd9aa61c5,0x5f0e6a04,0x04afb6ce,0xe84dd390,0xb3ec0f5a,
0xe1c4d9a5,0xba65056f,0x56876031,0x0d26bcfb,0x8b82b73a,0xd0236bf0,0x3cc10eae,0x6760d264}};
......@@ -5,7 +5,7 @@
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2010 *
* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2018 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
......@@ -102,90 +102,31 @@ int ogg_page_packets(const ogg_page *og){
#if 0
/* helper to initialize lookup for direct-table CRC (illustrative; we
use the static init below) */
use the static init in crctable.h) */
static ogg_uint32_t _ogg_crc_entry(unsigned long index){
int i;
unsigned long r;
r = index << 24;
for (i=0; i<8; i++)
if (r & 0x80000000UL)
r = (r << 1) ^ 0x04c11db7; /* The same as the ethernet generator
static void _ogg_crc_init(){
int i, j;
ogg_uint32_t polynomial, crc;
polynomial = 0x04c11db7; /* The same as the ethernet generator
polynomial, although we use an
unreflected alg and an init/final
of 0, not 0xffffffff */
else
r<<=1;
return (r & 0xffffffffUL);
for (i = 0; i <= 0xFF; i++){
crc = i << 24;
for (j = 0; j < 8; j++)
crc = (crc << 1) ^ (crc & (1 << 31) ? polynomial : 0);
crc_lookup[0][i] = crc;
}
for (i = 0; i <= 0xFF; i++)
for (j = 1; j < 8; j++)
crc_lookup[j][i] = crc_lookup[0][(crc_lookup[j - 1][i] >> 24) & 0xFF] ^ (crc_lookup[j - 1][i] << 8);
}
#endif
static const ogg_uint32_t crc_lookup[256]={
0x00000000,0x04c11db7,0x09823b6e,0x0d4326d9,
0x130476dc,0x17c56b6b,0x1a864db2,0x1e475005,
0x2608edb8,0x22c9f00f,0x2f8ad6d6,0x2b4bcb61,
0x350c9b64,0x31cd86d3,0x3c8ea00a,0x384fbdbd,
0x4c11db70,0x48d0c6c7,0x4593e01e,0x4152fda9,
0x5f15adac,0x5bd4b01b,0x569796c2,0x52568b75,
0x6a1936c8,0x6ed82b7f,0x639b0da6,0x675a1011,
0x791d4014,0x7ddc5da3,0x709f7b7a,0x745e66cd,
0x9823b6e0,0x9ce2ab57,0x91a18d8e,0x95609039,
0x8b27c03c,0x8fe6dd8b,0x82a5fb52,0x8664e6e5,
0xbe2b5b58,0xbaea46ef,0xb7a96036,0xb3687d81,
0xad2f2d84,0xa9ee3033,0xa4ad16ea,0xa06c0b5d,
0xd4326d90,0xd0f37027,0xddb056fe,0xd9714b49,
0xc7361b4c,0xc3f706fb,0xceb42022,0xca753d95,
0xf23a8028,0xf6fb9d9f,0xfbb8bb46,0xff79a6f1,
0xe13ef6f4,0xe5ffeb43,0xe8bccd9a,0xec7dd02d,
0x34867077,0x30476dc0,0x3d044b19,0x39c556ae,
0x278206ab,0x23431b1c,0x2e003dc5,0x2ac12072,
0x128e9dcf,0x164f8078,0x1b0ca6a1,0x1fcdbb16,
0x018aeb13,0x054bf6a4,0x0808d07d,0x0cc9cdca,
0x7897ab07,0x7c56b6b0,0x71159069,0x75d48dde,
0x6b93dddb,0x6f52c06c,0x6211e6b5,0x66d0fb02,
0x5e9f46bf,0x5a5e5b08,0x571d7dd1,0x53dc6066,
0x4d9b3063,0x495a2dd4,0x44190b0d,0x40d816ba,
0xaca5c697,0xa864db20,0xa527fdf9,0xa1e6e04e,
0xbfa1b04b,0xbb60adfc,0xb6238b25,0xb2e29692,
0x8aad2b2f,0x8e6c3698,0x832f1041,0x87ee0df6,
0x99a95df3,0x9d684044,0x902b669d,0x94ea7b2a,
0xe0b41de7,0xe4750050,0xe9362689,0xedf73b3e,
0xf3b06b3b,0xf771768c,0xfa325055,0xfef34de2,
0xc6bcf05f,0xc27dede8,0xcf3ecb31,0xcbffd686,
0xd5b88683,0xd1799b34,0xdc3abded,0xd8fba05a,
0x690ce0ee,0x6dcdfd59,0x608edb80,0x644fc637,
0x7a089632,0x7ec98b85,0x738aad5c,0x774bb0eb,
0x4f040d56,0x4bc510e1,0x46863638,0x42472b8f,
0x5c007b8a,0x58c1663d,0x558240e4,0x51435d53,
0x251d3b9e,0x21dc2629,0x2c9f00f0,0x285e1d47,
0x36194d42,0x32d850f5,0x3f9b762c,0x3b5a6b9b,
0x0315d626,0x07d4cb91,0x0a97ed48,0x0e56f0ff,
0x1011a0fa,0x14d0bd4d,0x19939b94,0x1d528623,
0xf12f560e,0xf5ee4bb9,0xf8ad6d60,0xfc6c70d7,
0xe22b20d2,0xe6ea3d65,0xeba91bbc,0xef68060b,
0xd727bbb6,0xd3e6a601,0xdea580d8,0xda649d6f,
0xc423cd6a,0xc0e2d0dd,0xcda1f604,0xc960ebb3,
0xbd3e8d7e,0xb9ff90c9,0xb4bcb610,0xb07daba7,
0xae3afba2,0xaafbe615,0xa7b8c0cc,0xa379dd7b,
0x9b3660c6,0x9ff77d71,0x92b45ba8,0x9675461f,
0x8832161a,0x8cf30bad,0x81b02d74,0x857130c3,
0x5d8a9099,0x594b8d2e,0x5408abf7,0x50c9b640,
0x4e8ee645,0x4a4ffbf2,0x470cdd2b,0x43cdc09c,
0x7b827d21,0x7f436096,0x7200464f,0x76c15bf8,
0x68860bfd,0x6c47164a,0x61043093,0x65c52d24,
0x119b4be9,0x155a565e,0x18197087,0x1cd86d30,
0x029f3d35,0x065e2082,0x0b1d065b,0x0fdc1bec,
0x3793a651,0x3352bbe6,0x3e119d3f,0x3ad08088,
0x2497d08d,0x2056cd3a,0x2d15ebe3,0x29d4f654,
0xc5a92679,0xc1683bce,0xcc2b1d17,0xc8ea00a0,
0xd6ad50a5,0xd26c4d12,0xdf2f6bcb,0xdbee767c,
0xe3a1cbc1,0xe760d676,0xea23f0af,0xeee2ed18,
0xf0a5bd1d,0xf464a0aa,0xf9278673,0xfde69bc4,
0x89b8fd09,0x8d79e0be,0x803ac667,0x84fbdbd0,
0x9abc8bd5,0x9e7d9662,0x933eb0bb,0x97ffad0c,
0xafb010b1,0xab710d06,0xa6322bdf,0xa2f33668,
0xbcb4666d,0xb8757bda,0xb5365d03,0xb1f740b4};
#include "crctable.h"
/* init the encode/decode logical stream state */
......@@ -293,10 +234,27 @@ static int _os_lacing_expand(ogg_stream_state *os,long needed){
/* Direct table CRC; note that this will be faster in the future if we
perform the checksum simultaneously with other copies */
static ogg_uint32_t _os_update_crc(ogg_uint32_t crc, unsigned char *buffer, int size){
while (size>=8){
crc^=buffer[0]<<24|buffer[1]<<16|buffer[2]<<8|buffer[3];
crc=crc_lookup[7][ crc>>24 ]^crc_lookup[6][(crc>>16)&0xFF]^
crc_lookup[5][(crc>> 8)&0xFF]^crc_lookup[4][ crc &0xFF]^
crc_lookup[3][buffer[4] ]^crc_lookup[2][buffer[5] ]^
crc_lookup[1][buffer[6] ]^crc_lookup[0][buffer[7] ];
buffer+=8;
size-=8;
}
while (size--)
crc=(crc<<8)^crc_lookup[0][((crc >> 24)&0xff)^*buffer++];
return crc;
}
void ogg_page_checksum_set(ogg_page *og){
if(og){
ogg_uint32_t crc_reg=0;
int i;
/* safety; needed for API behavior, but not framing code */
og->header[22]=0;
......@@ -304,10 +262,8 @@ void ogg_page_checksum_set(ogg_page *og){
og->header[24]=0;
og->header[25]=0;
for(i=0;i<og->header_len;i++)
crc_reg=(crc_reg<<8)^crc_lookup[((crc_reg >> 24)&0xff)^og->header[i]];
for(i=0;i<og->body_len;i++)
crc_reg=(crc_reg<<8)^crc_lookup[((crc_reg >> 24)&0xff)^og->body[i]];
crc_reg=_os_update_crc(crc_reg,og->header,og->header_len);
crc_reg=_os_update_crc(crc_reg,og->body,og->body_len);
og->header[22]=(unsigned char)(crc_reg&0xff);
og->header[23]=(unsigned char)((crc_reg>>8)&0xff);
......
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