FIDO_BIO_INFO_NEW(3)       Library Functions Manual       FIDO_BIO_INFO_NEW(3)

NAME
     fido_bio_info_new, fido_bio_info_free, fido_bio_info_type,
     fido_bio_info_max_samples - FIDO2 biometric sensor information API

SYNOPSIS
     #include <fido.h>
     #include <fido/bio.h>

     fido_bio_info_t *
     fido_bio_info_new(void);

     void
     fido_bio_info_free(fido_bio_info_t **info_p);

     uint8_t
     fido_bio_info_type(const fido_bio_info_t *info);

     uint8_t
     fido_bio_info_max_samples(const fido_bio_info_t *info);

DESCRIPTION
     Biometric sensor metadata is abstracted in libfido2 by the
     fido_bio_info_t type.

     The functions described in this page allow a fido_bio_info_t type to be
     allocated, deallocated, and inspected.  For device operations on
     fido_bio_info_t, please refer to fido_bio_dev_get_info(3).

     The fido_bio_info_new() function returns a pointer to a newly allocated,
     empty fido_bio_info_t type.  If memory cannot be allocated, NULL is
     returned.

     The fido_bio_info_free() function releases the memory backing *info_p,
     where *info_p must have been previously allocated by fido_bio_info_new().
     On return, *info_p is set to NULL.  Either info_p or *info_p may be NULL,
     in which case fido_bio_info_free() is a NOP.

     The fido_bio_info_type() function returns the fingerprint sensor type,
     which is 1 for touch sensors, and 2 for swipe sensors.

     The fido_bio_info_max_samples() function returns the maximum number of
     successful samples required for enrollment.

SEE ALSO
     fido_bio_dev_get_info(3), fido_bio_enroll_new(3), fido_bio_template(3)

Linux 6.7.4-arch1-1           September 13, 2019           Linux 6.7.4-arch1-1