#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include <sys/resource.h>
#include "fec.h"

int main()
{
  unsigned char block[255];
  int i;
  void *rs;
  struct rusage start, finish;
  double extime;
  int trials = 10000;

  for (i = 0; i < 223; i++) {
    block[i] = 0x01;
  }

  rs = init_rs_char(8, 0x187, 112, 11, 32, 0);
  encode_rs_char(rs, block, &block[223]);

  getrusage(RUSAGE_SELF, &start);
  for (i = 0; i < trials; i++) {
#if 0
    block[0] ^= 0xff; /* Introduce an error */
    block[2] ^= 0xff; /* Introduce an error */
#endif
    decode_rs_char(rs, block, NULL, 0);
  }
  getrusage(RUSAGE_SELF, &finish);
  extime = finish.ru_utime.tv_sec - start.ru_utime.tv_sec + 1e-6 *
           (finish.ru_utime.tv_usec - start.ru_utime.tv_usec);

  printf("Execution time for %d Reed-Solomon blocks using general decoder: %.2f sec\n",
         trials, extime);
  printf("decoder speed: %g bits/s\n", trials * 223 * 8 / extime);


  encode_rs_8(block, &block[223], 0);
  getrusage(RUSAGE_SELF, &start);
  for (i = 0; i < trials; i++) {
#if 0
    block[0] ^= 0xff; /* Introduce an error */
    block[2] ^= 0xff; /* Introduce an error */
#endif
    decode_rs_8(block, NULL, 0, 0);
  }
  getrusage(RUSAGE_SELF, &finish);
  extime = finish.ru_utime.tv_sec - start.ru_utime.tv_sec + 1e-6 *
           (finish.ru_utime.tv_usec - start.ru_utime.tv_usec);
  printf("Execution time for %d Reed-Solomon blocks using CCSDS decoder: %.2f sec\n",
         trials, extime);
  printf("decoder speed: %g bits/s\n", trials * 223 * 8 / extime);

  exit(0);
}