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authorMatthias P. Braendli <matthias.braendli@mpb.li>2019-09-23 20:09:39 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2019-09-23 20:09:39 +0200
commit09e514732788d821189c59ddc58e70355ba1a3cb (patch)
treed7adc353859aa7f796bda0b4be12421f69779e73 /src/fec/rs-common.h
parent56ad3cdd13e4c0078329ede5781bae4fcaeed569 (diff)
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Add code from common repository
Diffstat (limited to 'src/fec/rs-common.h')
-rw-r--r--src/fec/rs-common.h26
1 files changed, 0 insertions, 26 deletions
diff --git a/src/fec/rs-common.h b/src/fec/rs-common.h
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-/* Stuff common to all the general-purpose Reed-Solomon codecs
- * Copyright 2004 Phil Karn, KA9Q
- * May be used under the terms of the GNU Lesser General Public License (LGPL)
- */
-
-/* Reed-Solomon codec control block */
-struct rs {
- int mm; /* Bits per symbol */
- int nn; /* Symbols per block (= (1<<mm)-1) */
- data_t *alpha_to; /* log lookup table */
- data_t *index_of; /* Antilog lookup table */
- data_t *genpoly; /* Generator polynomial */
- int nroots; /* Number of generator roots = number of parity symbols */
- int fcr; /* First consecutive root, index form */
- int prim; /* Primitive element, index form */
- int iprim; /* prim-th root of 1, index form */
- int pad; /* Padding bytes in shortened block */
-};
-
-static inline int modnn(struct rs *rs,int x){
- while (x >= rs->nn) {
- x -= rs->nn;
- x = (x >> rs->mm) + (x & rs->nn);
- }
- return x;
-}