/* file: sampfreq.c G. Moody 7 June 1998
Last revised: 29 July 2012
-------------------------------------------------------------------------------
sampfreq: Print the sampling frequency of a record
Copyright (C) 1998-2012 George B. Moody
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, see <http://www.gnu.org/licenses/>.
You may contact the author by e-mail (wfdb@physionet.org) or postal mail
(MIT Room E25-505A, Cambridge, MA 02139 USA). For updates to this software,
please visit PhysioNet (http://www.physionet.org/).
_______________________________________________________________________________
*/
#include <stdio.h>
#include <wfdb/wfdb.h>
char *pname;
main(argc, argv)
int argc;
char **argv;
{
void help();
pname = argv[0];
switch (argc) {
case 1:
help();
exit(1);
break;
case 2:
printf("%g\n", sampfreq(argv[1]));
exit(0);
break;
case 3:
if (strcmp(argv[1], "-a") == 0 ||
strcmp(argv[1], "-H") == 0) {
int i, nsig;
double freq;
WFDB_Siginfo *si;
if ((nsig = isigopen(argv[2], NULL, 0)) > 0) {
SUALLOC(si, nsig, sizeof(WFDB_Siginfo));
isigopen(argv[2], si, nsig);
}
if (argv[1][1] == 'H') {
setgvmode(WFDB_HIGHRES);
printf("%g\n", sampfreq(NULL));
exit(0);
}
else {
setgvmode(WFDB_LOWRES);
freq = sampfreq(NULL);
for (i = 0; i < nsig; i++)
printf("%s\t%g\n", si[i].desc, si[i].spf * freq);
}
}
}
}
void help()
{
fprintf(stderr, "usage: %s [OPTION] RECORD\n", pname);
fprintf(stderr,
" where RECORD is the name of the input record\n"
" and OPTION may be either of:\n"
" -a list all signals and their sampling frequencies\n"
" -h show this help\n"
" -H show the maximum sampling frequency of a multifrequency record)\n"
" If no OPTION is used, show the base sampling frequency (frame rate).\n");
}