Struct fprint_rs::PrintData

pub struct PrintData(_);

Methods

impl PrintData

pub fn new() -> Self

pub fn with_data(data: *mut fp_print_data) -> Self

pub fn save_to_disk(&self, finger: Finger) -> Result<()>

Saves a stored print to disk, assigned to a specific finger. Even though you are limited to storing only the 10 human fingers, this is a per-device-type limit. For example, you can store the users right index finger from a DigitalPersona scanner, and you can also save the right index finger from a UPEK scanner. When you later come to load the print, the right one will be automatically selected.

This function will unconditionally overwrite a fingerprint previously saved for the same finger and device type. The print is saved in a hidden directory beneath the current user's home directory.

pub fn get_data(&self) -> Result<Location>

Convert a stored print into a unified representation inside a data buffer. You can then store this data buffer in any way that suits you, and load it back at some later time using PrintData::from_data() (or PrintData::try_from(Location)).

pub fn from_data(data: Location) -> Result<Self>

Load a stored print from a data buffer. The contents of said buffer must be the untouched contents of a buffer previously supplied to you by the PrintData::get_data().

pub fn get_driver_id(&self) -> u16

Gets the driver ID for a stored print. The driver ID indicates which driver the print originally came from. The print is only usable with a device controlled by that driver.

pub fn get_devtype(&self) -> u32

Gets the devtype for a stored print. The devtype represents which type of device under the parent driver is compatible with the print.

Trait Implementations

impl Drop for PrintData

fn drop(&mut self)

Executes the destructor for this type.

impl Default for PrintData

fn default() -> Self

Returns the "default value" for a type.

impl Debug for PrintData

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl TryFrom<Location> for PrintData

type Error = FPrintError

The type returned in the event of a conversion error.

fn try_from(value: Location) -> Result<Self, Self::Error>

Performs the conversion.