Sourcecode
#include <stdio.h>
#include <ra.h>
int main(int argc, char *argv[])
{
ra_handle ra;
value_handle vh;
meas_handle meas;
rec_handle rec;
long l, num_dev, num_ch;
/* initialize libRASCH */
ra = ra_lib_init();
if (ra == NULL)
{
printf("error initializing libRASCH\n");
return -1;
}
/* open measurement */
meas = ra_meas_open(ra, argv[1], 0);
if (meas == NULL)
{
printf("can't open measurement %s\n", argv[1]);
return -1;
}
/* get root recording */
rec = ra_rec_get_first(meas, 0);
if (rec == NULL)
{
printf("can't get recording-handle\n");
return -1;
}
/* get some infos about recording */
num_dev = num_ch = 0;
vh = ra_value_malloc();
if (ra_info_get(rec, RA_INFO_REC_GEN_NUM_DEVICES_L, vh) == 0)
num_dev = ra_value_get_long(vh);
if (ra_info_get(rec, RA_INFO_REC_GEN_NUM_CHANNEL_L, vh) == 0)
num_ch = ra_value_get_long(vh);
if (ra_info_get(rec, RA_INFO_REC_GEN_NAME_C, vh) == 0)
printf("measurement %s -- ", ra_value_get_string(vh));
if (ra_info_get(rec, RA_INFO_REC_GEN_DATE_C, vh) == 0)
printf("recorded at %s -- ", ra_value_get_string(vh));
printf("#devices=%d #channels=%d\n", num_dev, num_ch);
/* print name for every device */
printf("infos about the recording devices used:\n");
for (l = 0; l < num_dev; l++)
{
/* set number of device from which the info is wanted */
ra_value_set_number(vh, l);
if (ra_info_get(rec, RA_INFO_REC_DEV_HW_NAME_C, vh) == 0)
printf(" device #%d: %s\n", l,
ra_value_get_string(vh));
}
printf("\n");
/* print name and unit of every channel */
printf("infos about the channels:\n");
for (l = 0; l < num_ch; l++)
{
/* set number of channel */
ra_value_set_number(vh, l);
if (ra_info_get(rec, RA_INFO_REC_CH_NAME_C, vh) == 0)
printf(" ch #%d: %s", l, ra_value_get_string(vh));
if (ra_info_get(rec, RA_INFO_REC_CH_UNIT_C, vh) == 0)
printf(" [%s]", ra_value_get_string(vh));
printf("\n");
}
printf("\n");
/* close */
ra_value_free(vh);
ra_meas_close(meas);
ra_lib_close(ra);
return 0;
} /* main() */
Output of the example
measurement 100s -- recorded at 00.00.0 -- #devices=0
#channels=2
infos about the recording devices used:
infos about the channels:
ch #0: MLII []
ch #1: V5 []
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