NAME

       egd_get_numch - Get the number of channels sampled by type

SYNOPSIS

       #include <eegdev.h>

       int egd_get_numch(const struct eegdev* dev, int stype);

DESCRIPTION

       egd_get_numch()  returns  the  number  of  channels of type stype sampled by the recording
       device referenced by dev. stype must be one of the values returned by egd_sensor_type(3).

RETURN VALUE

       In case of success, the function returns a non negative value corresponding to the  number
       of  channels  of  type stype (possibly 0 if the device does not sample this type of data).
       Otherwise, -1 is returned and errno is set accordingly.

ERRORS

       egd_get_numch() will fail if:

       EINVAL dev is NULL or stype is not valid value.

SEE ALSO

       egd_get_cap(3), egd_sensor_type(3)