312 lines
13 KiB
C
312 lines
13 KiB
C
/*
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* FpDevice - A fingerprint reader device
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* Copyright (C) 2019 Benjamin Berg <bberg@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#pragma once
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#include "fp-image.h"
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#include <glib-object.h>
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#include <gio/gio.h>
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G_BEGIN_DECLS
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#define FP_TYPE_DEVICE (fp_device_get_type ())
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#define FP_DEVICE_RETRY (fp_device_retry_quark ())
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#define FP_DEVICE_ERROR (fp_device_error_quark ())
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G_DECLARE_DERIVABLE_TYPE (FpDevice, fp_device, FP, DEVICE, GObject)
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#include "fp-print.h"
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/* NOTE: We keep the class struct private! */
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/**
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* FpDeviceType:
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* @FP_DEVICE_TYPE_VIRTUAL: The device is a virtual device
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* @FP_DEVICE_TYPE_USB: The device is a USB device
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*/
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typedef enum {
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FP_DEVICE_TYPE_VIRTUAL,
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FP_DEVICE_TYPE_USB,
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} FpDeviceType;
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/**
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* FpScanType:
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* @FP_SCAN_TYPE_SWIPE: Sensor requires swiping the finger.
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* @FP_SCAN_TYPE_PRESS: Sensor requires placing/pressing down the finger.
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*/
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typedef enum {
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FP_SCAN_TYPE_SWIPE,
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FP_SCAN_TYPE_PRESS,
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} FpScanType;
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/**
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* FpDeviceRetry:
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* @FP_DEVICE_RETRY_GENERAL: The scan did not succeed due to poor scan quality
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* or other general user scanning problem.
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* @FP_DEVICE_RETRY_TOO_SHORT: The scan did not succeed because the finger
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* swipe was too short.
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* @FP_DEVICE_RETRY_CENTER_FINGER: The scan did not succeed because the finger
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* was not centered on the scanner.
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* @FP_DEVICE_RETRY_REMOVE_FINGER: The scan did not succeed due to quality or
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* pressure problems; the user should remove their finger from the scanner
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* before retrying.
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*
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* Error codes representing scan failures resulting in the user needing to
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* retry.
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*/
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typedef enum {
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FP_DEVICE_RETRY_GENERAL,
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FP_DEVICE_RETRY_TOO_SHORT,
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FP_DEVICE_RETRY_CENTER_FINGER,
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FP_DEVICE_RETRY_REMOVE_FINGER,
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} FpDeviceRetry;
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/**
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* FpDeviceError:
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* @FP_DEVICE_ERROR_GENERAL: A general error occurred.
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* @FP_DEVICE_ERROR_NOT_SUPPORTED: The device does not support the requested
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* operation.
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* @FP_DEVICE_ERROR_NOT_OPEN: The device needs to be opened to start this
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* operation.
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* @FP_DEVICE_ERROR_ALREADY_OPEN: The device has already been opened.
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* @FP_DEVICE_ERROR_BUSY: The device is busy with another request.
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* @FP_DEVICE_ERROR_PROTO: Protocol error
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* @FP_DEVICE_ERROR_DATA_INVALID: The passed data is invalid
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* @FP_DEVICE_ERROR_DATA_NOT_FOUND: Requested print was not found on device
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* @FP_DEVICE_ERROR_DATA_FULL: No space on device available for operation
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* @FP_DEVICE_ERROR_DATA_DUPLICATE: Enrolling template duplicates storaged templates
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* @FP_DEVICE_ERROR_REMOVED: The device has been removed.
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* @FP_DEVICE_ERROR_UNTRUSTED: Device cannot be trusted
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*
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* Error codes for device operations. More specific errors from other domains
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* such as #G_IO_ERROR or #G_USB_DEVICE_ERROR may also be reported.
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*/
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typedef enum {
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FP_DEVICE_ERROR_GENERAL,
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FP_DEVICE_ERROR_NOT_SUPPORTED,
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FP_DEVICE_ERROR_NOT_OPEN,
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FP_DEVICE_ERROR_ALREADY_OPEN,
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FP_DEVICE_ERROR_BUSY,
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FP_DEVICE_ERROR_PROTO,
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FP_DEVICE_ERROR_DATA_INVALID,
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FP_DEVICE_ERROR_DATA_NOT_FOUND,
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FP_DEVICE_ERROR_DATA_FULL,
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FP_DEVICE_ERROR_DATA_DUPLICATE,
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/* Leave some room to add more DATA related errors */
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FP_DEVICE_ERROR_REMOVED = 0x100,
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FP_DEVICE_ERROR_UNTRUSTED,
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} FpDeviceError;
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GQuark fp_device_retry_quark (void);
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GQuark fp_device_error_quark (void);
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/**
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* FpEnrollProgress:
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* @device: a #FpDevice
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* @completed_stages: Number of completed stages
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* @print: (nullable) (transfer none): The last scanned print
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* @user_data: (nullable) (transfer none): User provided data
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* @error: (nullable) (transfer none): #GError or %NULL
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*
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* The passed error is guaranteed to be of type %FP_DEVICE_RETRY if set.
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*/
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typedef void (*FpEnrollProgress) (FpDevice *device,
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gint completed_stages,
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FpPrint *print,
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gpointer user_data,
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GError *error);
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/**
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* FpMatchCb:
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* @device: a #FpDevice
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* @match: (nullable) (transfer none): The matching print if any matched @print
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* @print: (nullable) (transfer none): The newly scanned print
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* @user_data: (nullable) (transfer none): User provided data
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* @error: (nullable) (transfer none): #GError or %NULL
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*
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* Report the result of a match (identify or verify) operation.
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*
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* If @match is non-%NULL, then it is set to the matching #FpPrint as passed
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* to the match operation. In this case @error will always be %NULL.
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*
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* If @error is not %NULL then its domain is guaranteed to be
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* %FP_DEVICE_RETRY. All other error conditions will not be reported using
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* this callback. If such an error occurs before a match/no-match decision
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* can be made, then this callback will not be called. Should an error
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* happen afterwards, then you will get a match report through this callback
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* and an error when the operation finishes.
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*
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* If @match and @error are %NULL, then a finger was presented but it did not
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* match any known print.
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*
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* @print represents the newly scanned print. The driver may or may not
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* provide this information. Image based devices will provide it and it
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* allows access to the raw data.
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*
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* This callback exists because it makes sense for drivers to wait e.g. on
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* finger removal before completing the match operation. However, the
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* success/failure can often be reported at an earlier time, and there is
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* no need to make the user wait.
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*/
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typedef void (*FpMatchCb) (FpDevice *device,
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FpPrint *match,
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FpPrint *print,
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gpointer user_data,
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GError *error);
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const gchar *fp_device_get_driver (FpDevice *device);
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const gchar *fp_device_get_device_id (FpDevice *device);
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const gchar *fp_device_get_name (FpDevice *device);
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gboolean fp_device_is_open (FpDevice *device);
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FpScanType fp_device_get_scan_type (FpDevice *device);
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FpFingerStatusFlags fp_device_get_finger_status (FpDevice *device);
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gint fp_device_get_nr_enroll_stages (FpDevice *device);
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gboolean fp_device_supports_identify (FpDevice *device);
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gboolean fp_device_supports_capture (FpDevice *device);
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gboolean fp_device_has_storage (FpDevice *device);
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/* Opening the device */
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void fp_device_open (FpDevice *device,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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void fp_device_close (FpDevice *device,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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void fp_device_enroll (FpDevice *device,
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FpPrint *template_print,
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GCancellable *cancellable,
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FpEnrollProgress progress_cb,
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gpointer progress_data,
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GDestroyNotify progress_destroy,
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GAsyncReadyCallback callback,
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gpointer user_data);
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void fp_device_verify (FpDevice *device,
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FpPrint *enrolled_print,
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GCancellable *cancellable,
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FpMatchCb match_cb,
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gpointer match_data,
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GDestroyNotify match_destroy,
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GAsyncReadyCallback callback,
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gpointer user_data);
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void fp_device_identify (FpDevice *device,
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GPtrArray *prints,
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GCancellable *cancellable,
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FpMatchCb match_cb,
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gpointer match_data,
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GDestroyNotify match_destroy,
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GAsyncReadyCallback callback,
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gpointer user_data);
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void fp_device_capture (FpDevice *device,
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gboolean wait_for_finger,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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void fp_device_delete_print (FpDevice *device,
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FpPrint *enrolled_print,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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void fp_device_list_prints (FpDevice *device,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data);
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gboolean fp_device_open_finish (FpDevice *device,
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GAsyncResult *result,
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GError **error);
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gboolean fp_device_close_finish (FpDevice *device,
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GAsyncResult *result,
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GError **error);
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FpPrint *fp_device_enroll_finish (FpDevice *device,
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GAsyncResult *result,
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GError **error);
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gboolean fp_device_verify_finish (FpDevice *device,
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GAsyncResult *result,
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gboolean *match,
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FpPrint **print,
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GError **error);
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gboolean fp_device_identify_finish (FpDevice *device,
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GAsyncResult *result,
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FpPrint **match,
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FpPrint **print,
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GError **error);
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FpImage * fp_device_capture_finish (FpDevice *device,
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GAsyncResult *result,
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GError **error);
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gboolean fp_device_delete_print_finish (FpDevice *device,
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GAsyncResult *result,
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GError **error);
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GPtrArray * fp_device_list_prints_finish (FpDevice *device,
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GAsyncResult *result,
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GError **error);
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gboolean fp_device_open_sync (FpDevice *device,
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GCancellable *cancellable,
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GError **error);
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gboolean fp_device_close_sync (FpDevice *device,
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GCancellable *cancellable,
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GError **error);
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FpPrint * fp_device_enroll_sync (FpDevice *device,
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FpPrint *template_print,
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GCancellable *cancellable,
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FpEnrollProgress progress_cb,
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gpointer progress_data,
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GError **error);
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gboolean fp_device_verify_sync (FpDevice *device,
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FpPrint *enrolled_print,
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GCancellable *cancellable,
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FpMatchCb match_cb,
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gpointer match_data,
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gboolean *match,
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FpPrint **print,
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GError **error);
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gboolean fp_device_identify_sync (FpDevice *device,
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GPtrArray *prints,
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GCancellable *cancellable,
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FpMatchCb match_cb,
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gpointer match_data,
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FpPrint **match,
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FpPrint **print,
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GError **error);
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FpImage * fp_device_capture_sync (FpDevice *device,
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gboolean wait_for_finger,
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GCancellable *cancellable,
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GError **error);
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gboolean fp_device_delete_print_sync (FpDevice *device,
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FpPrint *enrolled_print,
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GCancellable *cancellable,
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GError **error);
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GPtrArray * fp_device_list_prints_sync (FpDevice *device,
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GCancellable *cancellable,
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GError **error);
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G_END_DECLS
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