Man page - egd_sensor_name(3)

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Manual

EGD_SENSOR_TYPE

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
SEE ALSO

NAME

egd_sensor_type, egd_sensor_name - Get the id or name of a sensor type

SYNOPSIS

#include <eegdev.h>

int egd_sensor_type(const char* sname );
const char* egd_sensor_name(int stype );

DESCRIPTION

egd_sensor_type () returns the identifier code of the sensor type named sname . egd_sensor_name () is the reverse process: it retrieves the name of the sensor type identified by stype .

Depending on which acquisition devices have been accessed by the library, the sensor type identifier for a given name may be different from a previous program execution. However once a association has been established it is ensured that it will remain the same until the process termination. Additionally, the sensor types named " eeg ", " trigger " and " undefined " are always associated respectively to 0 , 1 and 2 .

RETURN VALUE

In case of success, egd_sensor_type () returns a non negative value corresponding to the identifier of the sensor type called name . Otherwise it returns -1.

In case of success, egd_sensor_name () returns the name of the sensor type identified by stype . Otherwise, NULL is returned and errno is set accordingly.

ERRORS

egd_sensor_type () or egd_sensor_name () will fail if:

EINVAL

sname is NULL or refers to an unknown sensor type or if stype is not a known sensor type identifier.