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/* * Copyright (c) 2013, Kevin Greenan (kmgreen2@gmail.com)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY
* THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _ALG_SIG_H
#define _ALG_SIG_H
typedef int (*galois_single_multiply_func)(int, int, int);
struct jerasure_mult_routines {
galois_single_multiply_func galois_single_multiply;
};
#define JERASURE_SONAME "libJerasure.dylib"
typedef struct alg_sig_s
{
int gf_w;
int sig_len;
struct jerasure_mult_routines mult_routines;
void *jerasure_sohandle;
int *tbl1_l;
int *tbl1_r;
int *tbl2_l;
int *tbl2_r;
int *tbl3_l;
int *tbl3_r;
} alg_sig_t;
alg_sig_t *init_alg_sig(int sig_len, int gf_w);
void destroy_alg_sig(alg_sig_t* alg_sig_handle);
int compute_alg_sig(alg_sig_t* alg_sig_handle, char *buf, int len, char *sig);
int crc32_build_fast_table();
int crc32(int crc, const void *buf, int size);
#endif
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