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This file lists notable changes in each release. For the full history of all
changes, see ChangeLog.

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2020-06-08: v1.90.4 release

This release contains a number of important bugfixes. On the feature side,
the USB hotplug support was improved. A lot of drivers received fixes and
improvements.

Highlights:
 * Work around GUsb cancellation issue
 * Redefine internal image device state machine for more robustness
 * Add public finger-status reporting to FpDevice
 * Rework device removal API to be convenient (#330)
 * Enable powersave for unsupported USB devices
 * Improvements to examples
 * synaptics: Support identify operation
 * synaptics: Fix possible crash when the interrupt transfer is resubmitted
 * synaptics: Add support for PIDs 0x00f9, 0x00fc and 0x00c2
 * elan: Add PID 0x0c4d to supported device list
 * aes3k: Fix driver and add CI test (#306)
 * uru4000: Fix reference counting of image transfer
 * vfs301: Fix driver and add CI test (#320)

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2020-06-08: v1.90.3 release

This release mostly contains support for a number of new match-on-chip
devices. Most notable is the addition of the new goodixmoc driver.
Currently the driver has the small caveat that we have no strategy to
garbage collect old prints yet (a simple strategy could be implemented
in fprintd).

Highlights:
 * New goodixmoc driver supporting Goodix USB devices:
   27C6:5840
   27C6:6496
   27C6:60A2
 * Newly added support for Synaptics device:
   06CB:00E9
   06CB:00DF
 * Fixed an issue with Synaptics devices sometimes not working at boot
 * Fix issue with aes3k driver (#306)

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2020-06-08: v1.90.2 release

This release contains a large amount of bug and regression fixes. These
are not listed explicitly, but affect the majority of drivers.

Highlights:
 * A patch for nbis required for some sensors was accidentally dropped in
   an earlier release. Users of these sensors/drivers (aes1610, aes2501,
   aes2550, aes1660, aes2660, elan, upektc_img) need to re-enroll (#142).

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2019-11-20: v1.90.1 release

This release fixes a lot of the regressions introduced in 1.90.0. Please note
that both the driver and external APIs have changed, as both the verify and
the identify functions now have early reporting mechanisms.
The soname for the library, as well as a number of file locations have also
changed. While this allows installation in parallel with the 1.0 version of
libfprint, we recommend installing only one, and migrating from version 1.0 to
version 2.0 alongside its main consumer (fprintd).

Only major changes are listed below. A lot of other cleanup work and small
fixes have also been merged.

* Library:
  - Add support to run tests in gdb/valgrind
  - Allow testing on all architectures
  - Avoid image device AWAIT_FINGER_ON to deactivate state transitions
  - Fix verify/identify error propagation to library user
  - Correctly read image device information from class data
  - Continue enroll after an image driver reported a retry error
  - Change external API to allow reporting match results early
  - A lot of new unit tests and integration tests have been added

* Drivers API
  - Support variadic arguments in error functions
  - Various re-definitions of ownership handling
  - Add convenience API to change state after a timeout
  - Add unit tests for all the drivers API

* Drivers:
  - elan: Ensure correct deactivation of device
  - uru4000: Fix IRQ handler registration and internal state handling
  - uru4000: Fix control transfer request type
  - synaptics: Ensure errors are only reported after finger removal

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2019-11-20: v1.90.0 release

This release updates the core of the library to use GLib routines and Gio
style APIs. While the API both for library users remain similar in most
ways, there are some changes and all users will need to be ported.

A large motivation for the in-depth changes was the requirement to add
new API to support sensors that store the prints on the sensor. This
support is already used by the new synaptics driver, which will support
the current generation of the Prometheus MIS (match-in-sensor) chipset
by Synaptics (USB ID 06cb:00bd).

The current codebase is considered stable at this point. However, due to
the lack of wider testing it is only released as a 1.90.0 release which
can be considered a beta-release for 2.0.

With the rewrite, it is now also possible to support devices that are not
connected through USB (e.g. I2C). Another major improvement is that the
library has now a test suite, testing both the library core and allowing
tests of the drivers using umockdev.

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1.0    
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2019-08-08: v1.0 release
* Library:
  - Add guards to the public API and require GLib 2.50
  - Deprecate print storage API
  - Better documentation for fp_discover_devs()
  - Remove unused internal fpi_timeout_cancel_for_dev()
  - Remove state from fp_img_driver activate handler
  - Bug fixes related to restarting a failed verification immediately

* Drivers:
  - The Elan driver received a lot of bug fixes including a fix for a
    hang when verifying prints with fprintd, quirks for some devices,
    a memory leak fix and support for 04f3:0c42
  - Fix a probable crash in all the AES drivers
  - Add support for Lenovo Preferred Pro Keyboard (KUF1256) to vfs5011
  - Prevent hang during enroll process in etes603 driver
  - Fix possible integer overflow in uru4000
  - Work-around SELinux AVC warnings when uru4000 driver starts
  - Remove long-unmaintained and broken fdu2000 driver

* Tools/Examples:
  - Fix examples not working due to an overly strict check
  - Fix crash in GTK demo when there's no supported devices
  - Disable GTK demo until we have a USB Flatpak portal
  - Remove sleep() in enroll example which caused a crash in some drivers
  - Add a simple storage implementation example

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2018-12-14: v0.99.0 release
* Library:
  - All the internal API for device driver writers is now covered by the
    documentation and has been enhanced to make it easier to write drivers
  - Update internal NBIS fingerprint data processing library to one that's
    nearly 10 years newer
  - Re-add accessor for minutia coordinates which was used in the very
    old fprint_demo program, but also by our new GTK+ test program (see below)
  - Fix a crash when too many minutiae were detected in a capture

* Drivers:
  - Support more devices in the Elan driver, stability improvements

* Tools:
  - Add a test GTK+ application that will eventually be used for testing
    drivers without modifying the OS installed version. Note that this
    application currently requires manually changing permissions of USB
    devices, this will be fixed when the infrastructure exists to access
    those devices without additional permissions, as a normal user.

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2018-07-15: v0.8.2 release
* Drivers:
  - Add USB ID for TNP Nano USB Fingerprint Reader
  - Fix UPEKTS enrollment never finishing on some devices

* Library:
  - Fix fp_get_pollfds() retval type, a small ABI change
  - Downgrade fatal errors to run-time warnings, as a number of drivers
    used to throw silent errors and we made them fatal. Those will now
    be visible warnings, hopefully helping with fixing them.

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2018-06-12: v0.8.1 release
- Brown paperbag release to install the udev rules file in the correct
  directory if the udev pkg-config file doesn't have a trailing slash

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2018-06-12: v0.8.0 release
- Port to meson as the build system
- Port documentation to gtk-doc

* Drivers:
  - Add Elan driver
  - Increase threshold to detect encryption on URU4000 devices
  - Remove already replaced UPEKE2 driver
  - Fix possible crash caused by vfs5011 when no lines were captured

* Library:
  - Fix a number of memory and file descriptor leaks and warnings
  - Make NSS (and URU4000) driver optional
  - Fix assembling of frames for non-reverse and non reverse stripes
  - Split internal private header to clarify drivers API
  - Simplify logging system, now all the builds can be used to output
    debug information
  - Mark fp_dscv_print functions as deprecated

* Udev rules:
  - Add some unsupported devices to the whitelist

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0.7.0    
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2017-05-14: v0.7.0 release
* Drivers:
  - Add VFS0050 driver
  - Fix possible crash in AES3500 and AES4000
  - Fix broken enrollment in VFS101
  - Better verification with small sensor scanners
  - Plenty of fixes in VFS5011
  - Fix memory corruption in AES1610
  - Improve calibration settings for AES1610
  - Improve image assembling in upeksonly driver
  - Autodetect whether image is encrypted in uru4k

* Library:
  - NBIS: Remove false minutia at the edge of partial image
  - Introduce routines to assemble image from lines (used in VFS5011 and upeksonly)
  - Fix a bug that can cause driver state machine to enter into endless loop. 

* Udev rules:
  - Add driver name to the USB properties

* Plenty of build fixes

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2015-02-03: v0.6.0 release

* Drivers:
  - Reduce duplication between AES3500 and AES4000 drivers and
    add support for AES3500 device
  - Add support for UPEK 147e:2020 and Upek Eikon 2 devices
  - Add EgisTec ES603 driver
  - Add VFS5011 driver
  - Always perform 5 scans for image enrollment
  - Better verification with AES1660 driver
  - Better verification for a number of AES drivers

* Library:
  - Always use Pixman for image manipulation, gdk-pixbuf and ImageMagick
    are not supported any more.

* Udev rules:
  - Fix warning when USB hub or system does not support power management

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2013-08-11: v0.5.1 release

* Drivers
  - Add support for 147e:2020 to upeke2 driver
  - Fix possible race condition, and cancellation in uru4000 driver

* Udev rules:
  - Add Microsoft keyboard to the suspend blacklist

* Plenty of build fixes

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2012-12-03: v0.5.0 release

* Drivers:
  - New VFS300/VFS301 driver
  - New AES2550/AES2810 drivers
  - New AES1660 driver
  - New AES2660 driver
  - New DigitalPersona URU4500 driver
  - Avoid empty capture and improve image contrast in the
  AES2501 and AES2550 drivers
  - Update upektc driver, add support for Eikon Touch 300
  - Fix UrU4000 image capture on ARM

* Library:
  - Fix global variable collisions with libusb and other system headers
  - Fix possible crash in NBIS image processing with some fingerprints

* Udev rules:
  - Fix power control path for newer kernels
  - Move udev rules to the correct directory
  - Don't print duplicated udev rules
  - Include udev rules in the tarball
  - Allow disabling of udev rules for cross-compiling
  - Add driver names in the generated rules

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0.4.0    
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2011-04-18: v0.4.0 release
 * Add support for Validity VFS101 (USB ID 138a:0001)
 * Fix crasher when resizing a fingerprint image
 * Fix wrong timeout being returned when either of
   libusb or libfprint doesn't have a timeout

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0.3.0    
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2010-09-08: v0.3.0 release
 * Add support for UPEK TCS4C (USB ID 147e:1000)
 * Use NSS instead of OpenSSL for GPL compliance
 * upeksonly driver bug fixes
 * Fix a crash if a scan was shorter than 8 lines
 * Fix compilation with C++ compiler

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2010-08-19: v0.2.0 release (since 0.1.0-pre2)
 * Add gdk-pixbuf support for image manipulation
 * Add udev rules to allow devices to autosuspend
 * Finish port of AES1610 driver
 * Add UPEK EikonII (TCRD4C) driver

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2007-12-07: v0.0.5 release
 * AES1610 imaging improvements
 * Internal cleanups for Authentec drivers
 * Add support for latest Microsoft Fingerprint Scanner hardware revision

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2007-11-22: v0.0.4 release
 * Enable AES1610 driver thanks to Michele B
 * Implement identification: one-to-many fingerprint matching (Daniel Drake)

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2007-11-19: v0.0.3 release
 * Add API to access minutiae (Daniel Drake)
 * Add API to delete enroll data (Daniel Drake)
 * Add Authentec AES1610 driver (Anthony Bretaudeau)

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2007-11-17: v0.0.2 release
 * Detect reversed scans on AES2501 (Vasily Khoruzhick)
 * Improved AES2501 scanning
 * Compatibility with older ImageMagick versions
 * Add UPEK TouchChip driver (Jan-Michael Brummer)
 * Add binarization API

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2007-11-15: v0.0.1 release
 * Initial release