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#ifndef LIBFEC_H
#define LIBFEC_H
struct fec_parms;
/* k - number of actual data packets
* n - total number of packets including data and redundant packets
* (actual packet size isn't relevant here) */
struct fec_parms *fec_new(int k, int n);
void fec_free(struct fec_parms *p);
/* src - array of (n) pointers to data packets
* fec - buffer for packet to be generated
* index - index of packet to be generated (0 <= index < n)
* sz - data packet size
*
* _linear version just takes a pointer to the raw data; no
* mucking about with packet pointers.
*/
void fec_encode(struct fec_parms *code, unsigned char *src[],
unsigned char *fec, int index, int sz);
void fec_encode_linear(struct fec_parms *code, unsigned char *src,
unsigned char *fec, int index, int sz);
/* data - array of (k) pointers to data packets, in arbitrary order (see i)
* i - indices of (data) packets
* sz - data packet size
*
* Will never fail as long as you give it (k) individual data packets.
* Will re-order the (data) pointers but not the indices -- data packets
* are ordered on return.
*/
int fec_decode(struct fec_parms *code, unsigned char *data[],
int i[], int sz);
#endif /* LIBFEC_H */
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