FP_DEV ()

struct fp_dev *
FP_DEV (struct fp_img_dev *dev);

Returns the struct fp_dev associated with dev , or NULL on failure.

FP_IMG_DEV ()

struct fp_img_dev *
FP_IMG_DEV (struct fp_dev *dev);

Returns a struct fp_img_dev associated with dev , or NULL on failure.

fp_dev_set_instance_data ()

void
fp_dev_set_instance_data (struct fp_dev *dev,
                          void *instance_data);

Set the instance data for a struct fp_dev. This is usually a structure private to the driver used to keep state and pass it as user_data to asynchronous functions.

The core does not do any memory management for this data, so the driver itself will have to create and free its own structure when appropriate.

FP_INSTANCE_DATA ()

void *
FP_INSTANCE_DATA (struct fp_dev *dev);

Returns the instance data set using fp_dev_set_instance_data().

fpi_dev_get_usb_dev ()

libusb_device_handle *
fpi_dev_get_usb_dev (struct fp_dev *dev);

Returns the libusb_device_handle associated with dev or NULL if none are associated.

fpi_dev_get_verify_data ()

struct fp_print_data *
fpi_dev_get_verify_data (struct fp_dev *dev);

Returns the verify data associated with dev . This is usually only necessary for primitive devices which need to have access to the raw verify data as it might have been stored on disk.

fpi_dev_set_nr_enroll_stages ()

void
fpi_dev_set_nr_enroll_stages (struct fp_dev *dev,
                              int nr_enroll_stages);

Sets the number of enroll stages that this device uses. This is usually only necessary for primitive devices which have a hard-coded number of enroll stages baked into their protocol.

struct fp_img_dev

struct fp_img_dev;

fp_img_dev is an opaque structure type. You must access it using the appropriate functions.