/* This function wraps around the fixed 8-bit decoder, performing the
 * basis transformations necessary to meet the CCSDS standard
 *
 * Copyright 2002, Phil Karn, KA9Q
 * May be used under the terms of the GNU Lesser General Public License (LGPL)
 */
#include "ccsds.h"
#include "fec.h"

#include <satnogs/api.h>

SATNOGS_API int decode_rs_ccsds(data_t *data, int *eras_pos, int no_eras, int pad)
{
  int i, r;
  data_t cdata[NN];

  /* Convert data from dual basis to conventional */
  for (i = 0; i < NN - pad; i++) {
    cdata[i] = Tal1tab[data[i]];
  }

  r = decode_rs_8(cdata, eras_pos, no_eras, pad);

  if (r > 0) {
    /* Convert from conventional to dual basis */
    for (i = 0; i < NN - pad; i++) {
      data[i] = Taltab[cdata[i]];
    }
  }
  return r;
}