345 lines
9.7 KiB
C
345 lines
9.7 KiB
C
/*
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* Internal/private definitions for libfprint
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* Copyright (C) 2007-2008 Daniel Drake <dsd@gentoo.org>
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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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#ifndef __FPRINT_INTERNAL_H__
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#define __FPRINT_INTERNAL_H__
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#include <config.h>
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#include <stdint.h>
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#include <glib.h>
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#include <libusb.h>
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#include <fprint.h>
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#define container_of(ptr, type, member) ({ \
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const typeof( ((type *)0)->member ) *__mptr = (ptr); \
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(type *)( (char *)__mptr - offsetof(type,member) );})
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enum fpi_log_level {
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LOG_LEVEL_DEBUG,
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LOG_LEVEL_INFO,
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LOG_LEVEL_WARNING,
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LOG_LEVEL_ERROR,
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};
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void fpi_log(enum fpi_log_level, const char *component, const char *function,
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const char *format, ...);
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#ifndef FP_COMPONENT
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#define FP_COMPONENT NULL
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#endif
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#ifdef ENABLE_LOGGING
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#define _fpi_log(level, fmt...) fpi_log(level, FP_COMPONENT, __FUNCTION__, fmt)
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#else
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#define _fpi_log(level, fmt...)
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#endif
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#ifdef ENABLE_DEBUG_LOGGING
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#define fp_dbg(fmt...) _fpi_log(LOG_LEVEL_DEBUG, fmt)
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#else
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#define fp_dbg(fmt...)
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#endif
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#define fp_info(fmt...) _fpi_log(LOG_LEVEL_INFO, fmt)
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#define fp_warn(fmt...) _fpi_log(LOG_LEVEL_WARNING, fmt)
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#define fp_err(fmt...) _fpi_log(LOG_LEVEL_ERROR, fmt)
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#ifdef NDEBUG
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#define BUG_ON(condition) \
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if ((condition)) fp_err("BUG at %s:%d", __FILE__, __LINE__)
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#else
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#define BUG_ON(condition)
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#endif
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enum fp_dev_state {
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DEV_STATE_INITIAL = 0,
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DEV_STATE_ERROR,
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DEV_STATE_INITIALIZING,
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DEV_STATE_INITIALIZED,
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DEV_STATE_DEINITIALIZING,
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DEV_STATE_DEINITIALIZED,
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DEV_STATE_ENROLL_STARTING,
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DEV_STATE_ENROLLING,
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DEV_STATE_ENROLL_STOPPING,
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DEV_STATE_VERIFY_STARTING,
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DEV_STATE_VERIFYING,
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DEV_STATE_VERIFY_DONE,
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DEV_STATE_VERIFY_STOPPING,
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DEV_STATE_IDENTIFY_STARTING,
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DEV_STATE_IDENTIFYING,
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DEV_STATE_IDENTIFY_DONE,
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DEV_STATE_IDENTIFY_STOPPING,
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};
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typedef void (*fp_enroll_stage_cb)(struct fp_dev *dev, int result,
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struct fp_print_data *data, struct fp_img *img);
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typedef void (*fp_verify_cb)(struct fp_dev *dev, int result,
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struct fp_img *img);
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typedef void (*fp_identify_cb)(struct fp_dev *dev, int result,
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size_t match_offset, struct fp_img *img);
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struct fp_dev {
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struct fp_driver *drv;
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libusb_dev_handle *udev;
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uint32_t devtype;
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void *priv;
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int nr_enroll_stages;
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/* read-only to drivers */
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struct fp_print_data *verify_data;
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/* drivers should not mess with any of the below */
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enum fp_dev_state state;
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/* FIXME: convert this to generic state operational data mechanism? */
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int __enroll_stage;
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fp_enroll_stage_cb enroll_cb;
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void *enroll_data;
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void *sync_verify_data;
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fp_verify_cb verify_cb;
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void *identify_data;
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void *sync_identify_data;
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fp_identify_cb identify_cb;
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};
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struct fp_img_dev {
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struct fp_dev *dev;
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libusb_dev_handle *udev;
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void *priv;
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};
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int fpi_imgdev_capture(struct fp_img_dev *imgdev, int unconditional,
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struct fp_img **image);
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int fpi_imgdev_get_img_width(struct fp_img_dev *imgdev);
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int fpi_imgdev_get_img_height(struct fp_img_dev *imgdev);
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struct usb_id {
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uint16_t vendor;
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uint16_t product;
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unsigned long driver_data;
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};
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enum fp_driver_type {
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DRIVER_PRIMITIVE = 0,
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DRIVER_IMAGING = 1,
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};
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struct fp_driver {
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const uint16_t id;
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const char *name;
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const char *full_name;
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const struct usb_id * const id_table;
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enum fp_driver_type type;
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void *priv;
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/* Device operations */
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int (*discover)(const struct usb_id *usb_id, uint32_t *devtype);
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int (*init)(struct fp_dev *dev, unsigned long driver_data);
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void (*deinit)(struct fp_dev *dev);
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int (*enroll_start)(struct fp_dev *dev);
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int (*enroll_stop)(struct fp_dev *dev);
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int (*verify_start)(struct fp_dev *dev);
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int (*verify_stop)(struct fp_dev *dev, gboolean iterating);
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int (*identify_start)(struct fp_dev *dev);
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int (*identify_stop)(struct fp_dev *dev, gboolean iterating);
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};
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enum fp_print_data_type fpi_driver_get_data_type(struct fp_driver *drv);
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/* flags for fp_img_driver.flags */
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#define FP_IMGDRV_SUPPORTS_UNCONDITIONAL_CAPTURE (1 << 0)
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struct fp_img_driver {
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struct fp_driver driver;
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uint16_t flags;
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int img_width;
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int img_height;
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unsigned int enlarge_factor;
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int bz3_threshold;
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/* Device operations */
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int (*init)(struct fp_img_dev *dev, unsigned long driver_data);
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void (*exit)(struct fp_img_dev *dev);
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int (*await_finger_on)(struct fp_img_dev *dev);
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int (*await_finger_off)(struct fp_img_dev *dev);
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int (*capture)(struct fp_img_dev *dev, gboolean unconditional,
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struct fp_img **image);
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};
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extern struct fp_driver upekts_driver;
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extern struct fp_img_driver upektc_driver;
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extern struct fp_img_driver uru4000_driver;
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extern struct fp_img_driver aes1610_driver;
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extern struct fp_img_driver aes2501_driver;
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extern struct fp_img_driver aes4000_driver;
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extern struct fp_img_driver fdu2000_driver;
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void fpi_img_driver_setup(struct fp_img_driver *idriver);
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#define fpi_driver_to_img_driver(drv) \
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container_of((drv), struct fp_img_driver, driver)
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struct fp_dscv_dev {
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libusb_dev *udev;
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struct fp_driver *drv;
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unsigned long driver_data;
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uint32_t devtype;
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};
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struct fp_dscv_print {
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uint16_t driver_id;
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uint32_t devtype;
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enum fp_finger finger;
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char *path;
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};
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enum fp_print_data_type {
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PRINT_DATA_RAW = 0, /* memset-imposed default */
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PRINT_DATA_NBIS_MINUTIAE,
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};
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struct fp_print_data {
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uint16_t driver_id;
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uint32_t devtype;
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enum fp_print_data_type type;
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size_t length;
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unsigned char data[0];
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};
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struct fpi_print_data_fp1 {
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char prefix[3];
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uint16_t driver_id;
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uint32_t devtype;
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unsigned char data_type;
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unsigned char data[0];
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} __attribute__((__packed__));
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void fpi_data_exit(void);
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struct fp_print_data *fpi_print_data_new(struct fp_dev *dev, size_t length);
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gboolean fpi_print_data_compatible(uint16_t driver_id1, uint32_t devtype1,
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enum fp_print_data_type type1, uint16_t driver_id2, uint32_t devtype2,
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enum fp_print_data_type type2);
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struct fp_minutiae {
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int alloc;
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int num;
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struct fp_minutia **list;
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};
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/* bit values for fp_img.flags */
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#define FP_IMG_V_FLIPPED (1<<0)
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#define FP_IMG_H_FLIPPED (1<<1)
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#define FP_IMG_COLORS_INVERTED (1<<2)
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#define FP_IMG_BINARIZED_FORM (1<<3)
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#define FP_IMG_STANDARDIZATION_FLAGS (FP_IMG_V_FLIPPED | FP_IMG_H_FLIPPED \
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| FP_IMG_COLORS_INVERTED)
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struct fp_img {
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int width;
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int height;
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size_t length;
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uint16_t flags;
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struct fp_minutiae *minutiae;
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unsigned char *binarized;
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unsigned char data[0];
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};
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struct fp_img *fpi_img_new(size_t length);
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struct fp_img *fpi_img_new_for_imgdev(struct fp_img_dev *dev);
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struct fp_img *fpi_img_resize(struct fp_img *img, size_t newsize);
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gboolean fpi_img_is_sane(struct fp_img *img);
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int fpi_img_detect_minutiae(struct fp_img *img);
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int fpi_img_to_print_data(struct fp_img_dev *imgdev, struct fp_img *img,
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struct fp_print_data **ret);
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int fpi_img_compare_print_data(struct fp_print_data *enrolled_print,
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struct fp_print_data *new_print);
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int fpi_img_compare_print_data_to_gallery(struct fp_print_data *print,
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struct fp_print_data **gallery, int match_threshold, int *match_offset);
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/* async drv <--> lib comms */
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struct fpi_ssm;
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typedef void (*ssm_completed_fn)(struct fpi_ssm *ssm);
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typedef void (*ssm_handler_fn)(struct fpi_ssm *ssm);
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/* sequential state machine: state machine that iterates sequentially over
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* a predefined series of states. can be aborted by either completion or
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* abortion error conditions. */
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struct fpi_ssm {
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struct fp_dev *dev;
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void *priv;
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int nr_states;
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int cur_state;
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gboolean completed;
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int error;
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ssm_completed_fn callback;
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ssm_handler_fn handler;
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};
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/* for library and drivers */
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struct fpi_ssm *fpi_ssm_new(struct fp_dev *dev, ssm_handler_fn handler,
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int nr_states);
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void fpi_ssm_free(struct fpi_ssm *machine);
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void fpi_ssm_start(struct fpi_ssm *machine, ssm_completed_fn callback);
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int fpi_ssm_has_completed(struct fpi_ssm *machine);
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/* for drivers */
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void fpi_ssm_next_state(struct fpi_ssm *machine);
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void fpi_ssm_mark_completed(struct fpi_ssm *machine);
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void fpi_ssm_mark_aborted(struct fpi_ssm *machine, int error);
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int fpi_drv_init(struct fp_dev *dev, unsigned long driver_data);
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void fpi_drvcb_init_complete(struct fp_dev *dev, int status);
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void fpi_drv_deinit(struct fp_dev *dev);
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void fpi_drvcb_deinit_complete(struct fp_dev *dev);
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int fpi_drv_enroll_start(struct fp_dev *dev, fp_enroll_stage_cb callback);
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void fpi_drvcb_enroll_started(struct fp_dev *dev, int status);
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void fpi_drvcb_enroll_stage_completed(struct fp_dev *dev, int result,
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struct fp_print_data *data, struct fp_img *img);
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int fpi_drv_enroll_stop(struct fp_dev *dev);
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void fpi_drvcb_enroll_stopped(struct fp_dev *dev);
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int fpi_drv_verify_start(struct fp_dev *dev, fp_verify_cb callback,
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struct fp_print_data *data);
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void fpi_drvcb_verify_started(struct fp_dev *dev, int status);
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void fpi_drvcb_report_verify_result(struct fp_dev *dev, int result,
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struct fp_img *img);
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int fpi_drv_verify_stop(struct fp_dev *dev);
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void fpi_drvcb_verify_stopped(struct fp_dev *dev);
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int fpi_drv_identify_start(struct fp_dev *dev, fp_identify_cb callback,
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struct fp_print_data **gallery);
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void fpi_drvcb_identify_started(struct fp_dev *dev, int status);
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void fpi_drvcb_report_identify_result(struct fp_dev *dev, int result,
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size_t match_offset, struct fp_img *img);
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int fpi_drv_identify_stop(struct fp_dev *dev);
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void fpi_drvcb_identify_stopped(struct fp_dev *dev);
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#endif
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