[fprint] Willing to write driver for LightTuning Fingerprint Reader

[Vasily Khoruzhick]

On Fri, Mar 10, 2017 at 7:26 AM, Carson Reinke <carson at reinke.co> wrote:
> As a starting point, take a look at the source libfprint/drivers to see each
> driver for the appropriate device.  Not sure if the authors have actually
> referenced the devices SDK or if there was some reverse engineering.  It
> might not hurt to try and hit them up on email to see.  I would imagine the
> devices share some common concepts.

There was *some* reverse engineering for most devices. Currently we
support 3 types of devices in libfprint:

1) Devices that provide whole image at once, i.e. no assembly needed.
These can be swipe or touch sensors. See
libfprint/drivers/upektc_img.c as example.
2) Authentec-like devices: these are swipe devices, they provide short
frames, e.g. 192x4, driver has to assemble them,
we have routines for movement estimation and assembly in libfprint,
see libfprint/drivers/aes2550.c for example
3) validity-like devices (vfs5011): these are swipe devices, but they
provide only one full line per frame (e.g. 192x1) and shorter next
line (64x1 at the image center),
driver has to do movement estimation and assembly, we have routines to
do that, see libfprint/drivers/vfs5011.c or
libfprint/drivers/upeksonly.c for example.

>
> Please share what you come up with!
>
> On Thu, Mar 9, 2017 at 12:16 PM, Yujie REN <renyj1991 at gmail.com> wrote:
>>
>> Hello,
>>
>>     I recently bought a Acer Swift 3 with a LighTuning Fingerprint reader,
>> the ID is 1c7a:0570. The only available driver is for 0603 not for 0570. So,
>> I'm gonna write a driver by myself.
>>
>>     As a Linux user, and a computer science student in system track, I
>> have solid foundation in C programming, Operating System and Assembly. Since
>> I don't have experience in open source development, it'll be challenging for
>> me, but I'd like to join. I'll have time for this project, could anybody
>> give me some suggestions to start with?
>>
>> --------------------------------------------------------------------
>> Thanks,
>> Yujie REN
>> M.S. Student of Computer Science Department
>> Rutgers University
>> --------------------------------------------------------------------
>>
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>
>
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