// File: example9.java I. Henry February 18 2005
//
// Java translation of example9.c from the WFDB Programmer's Guide
//
// Copyright (C) 2005 Isaac C. Henry (ihenry@physionet.org)
import java.io.*;
import wfdb.*;
public class example9 {
public static void main(String argv[]) {
int btype, i, j, nbeats = 0, nsig, hwindow, window, stoptime = 0;
WFDB_Anninfo a = new WFDB_Anninfo();
WFDB_Annotation annot = new WFDB_Annotation();
if (argv.length < 2) {
System.out.println(
"usage: example9 annotator record [beat-type from to]");
// Unlike C programs, Java programs do not have any foolproof way
// to discover their own names, so the name is given as a constant
// above. The usage statement is correct if this file has been
// compiled. The command needed to run this program within a JVM
// is platform-dependent and likely to be more complex.
System.exit(1);
}
a.setName(argv[0]); a.setStat(wfdb.WFDB_READ);
if ((nsig = wfdb.isigopen(argv[1], null, 0)) < 1) System.exit(2);
WFDB_SiginfoArray s = new WFDB_SiginfoArray(nsig);
WFDB_SampleArray v = new WFDB_SampleArray(nsig);
WFDB_SampleArray vb = new WFDB_SampleArray(nsig);
if (wfdb.wfdbinit(argv[1], a, 1, s.cast(), nsig) != nsig)
System.exit(3);
hwindow = wfdb.strtim(".05"); window = 2*hwindow + 1;
long sum[][] = new long[nsig][window];
btype = (argv.length > 2) ? wfdb.strann(argv[2]) : wfdb.NORMAL;
if (argv.length > 3) wfdb.iannsettime(wfdb.strtim(argv[3]));
WFDB_Siginfo s_0_ = s.getitem(0);
if (argv.length > 4) {
if ((stoptime = wfdb.strtim(argv[4])) < 0)
stoptime = -stoptime;
if (s_0_.getNsamp() > 0 && stoptime > s_0_.getNsamp())
stoptime = s_0_.getNsamp();
}
else stoptime = s_0_.getNsamp();
if (stoptime > 0) stoptime -= hwindow;
while (wfdb.getann(0, annot) == 0 && annot.getTime() < hwindow)
;
do {
if (annot.getAnntyp() != btype) continue;
wfdb.isigsettime(annot.getTime() - hwindow - 1);
wfdb.getvec(vb.cast());
for (j = 0; j < window && wfdb.getvec(v.cast()) > 0; j++)
for (i = 0; i < nsig; i++)
sum[i][j] += v.getitem(i) - vb.getitem(i);
nbeats++;
} while (wfdb.getann(0, annot) == 0 &&
(stoptime == 0L || annot.getTime() < stoptime));
if (nbeats < 1) {
System.out.println("example9: no `" + wfdb.annstr(btype) +
"' beats found");
System.exit(4);
}
System.out.println("Average of " + nbeats + " `"+ wfdb.annstr(btype) +
"' beats:");
for (j = 0; j < window; j++)
for (i = 0; i < nsig; i++)
System.out.print( (double)sum[i][j]/nbeats +
((i < nsig-1) ? "\t" : "\n"));
wfdb.wfdbquit();
}
}