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/* |
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* fec.h -- forward error correction based on Vandermonde matrices |
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* 980614 |
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* (C) 1997-98 Luigi Rizzo (luigi@iet.unipi.it) |
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* |
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* Portions derived from code by Phil Karn (karn@ka9q.ampr.org), |
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* Robert Morelos-Zaragoza (robert@spectra.eng.hawaii.edu) and Hari |
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* Thirumoorthy (harit@spectra.eng.hawaii.edu), Aug 1995 |
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* modified by Marc Lehmann <fec@schmorp.de>, Sep 2003. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS |
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, |
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, |
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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* OF SUCH DAMAGE. |
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*/ |
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/* |
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* The following parameter defines how many bits are used for |
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* field elements. The code supports any value from 2 to 16 |
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* but fastest operation is achieved with 8 bit elements |
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* This is the only parameter you may want to change. |
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*/ |
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#define GF_BITS8 8 /* code over GF(2**GF_BITS) - change to suit */ |
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#define GF_BITS16 16 /* code over GF(2**GF_BITS) - change to suit */ |
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#define GF_SIZE8 ((1 << GF_BITS8 ) - 1) /* powers of \alpha */ |
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#define GF_SIZE16 ((1 << GF_BITS16) - 1) /* powers of \alpha */ |
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void fec8_free(void *p) ; |
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void *fec8_new(int k, int n) ; |
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void fec8_encode(void *code, void *src[], void *dst, int index, int sz) ; |
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int fec8_decode(void *code, void *pkt[], int index[], int sz) ; |
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void fec16_free(void *p) ; |
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void *fec16_new(int k, int n) ; |
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void fec16_encode(void *code, void *src[], void *dst, int index, int sz) ; |
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int fec16_decode(void *code, void *pkt[], int index[], int sz) ; |
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/* end of file */ |
