file5-o.txt

Reference Implementation of G.711 standard and other voice codecs

#include <stdio.h>
#include <math.h>
#include "gpib-bib.h"
#include "sv6.h"

void            main(int argc, char *argv[])
{
  sv6_state       st;
  double          time;

  /* Get length for measurements */
  if (argc < 2 || strcmp(argv[1], "-?") == 0)
  {
    fprintf(stderr, "Usage: %s meas-time-in-sec\n", argv[0]);
    exit(1);
  }
  else
  {
    /* Read parameters for processing */
    st.DeltaT = (double) atof(argv[1]);
    fprintf(stderr, ">> Measurement time is %lfs\n", st.DeltaT);
  }

  /* Save specified time in memory */
  time = st.DeltaT;

  /* Initializing the SV6 structure */
  if (SV6_open(&st))
    exit(fprintf(stderr, "Aborting program\n"), 3);

  /* Initialize SV6 */
  SV6_initialize(st);
  delay(1000);			/* Allow 1s for settling */

  /* Measuring level and reporting */
  do
  {
    /* Measure level for the specified time */
    SV6_measure(&st);

    /* Print levels read on screen */
    print_sv6_state(st, stdout);

    /* Set measurement time to the original value */
    st.DeltaT = time;

    /* Repeat while the user hits just ENTER */
    fprintf(stderr, "\n>> Hit ENTER to repeat, other key to quit\n");
  } while (!kbhit() && getche() == '\r');
}