On Thu, 17 Feb 2005, Paulo Marques wrote:

>This seems like a much more reasonable request than "So, I'd like to be 
>able to initiate hardware calibration via evdev also.".
>
>I read this as "evdev should be able to understand how to request 
>hardware calibration to different TS brands", but now I see better what 
>you meant.

ok, sorry for the confusion.  That's not my primary interest, the 
coordinate data is.  However I do think, if possible, it would be good to 
have a way to do hw-calibration via evdev, that's common to as many 
touchscreens as possible.  But I can easily calibrate the 3M USB 
touchscreen via usbfs if I have to.

>Sure. The only problem now is that you have 2 methods to calibrate 
>touchscreens, the standard one and the one that only works with mtouch 
>devices. Next thing you know, someone else makes a nice calibration 
>software specific for ELO touchscreens, and another for <place your 
>favorite TS brand here>, and so on.

Yes, unfortunately, unless a single evdev command initiates equivalent 
hardware calibration in the various touchscreens out there.  

>We were trying to have a standard way to access touchscreens. I'm 
>starting to work on a "libtouch" library that would handle calibration, 
>filtering, etc., so that we could have a standard API that both X and 
>non-X (framebuffer, directFB) applications could use.
>
>Your approach isn't going to help that plan... :(

How does my plan have any effect at all on you creating a software 
calibration library?



-- 
Dan Streetman
[EMAIL PROTECTED]
---------------------
186,272 miles per second:
It isn't just a good idea, it's the law!


-------------------------------------------------------
SF email is sponsored by - The IT Product Guide
Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now.
http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click
_______________________________________________
linux-usb-devel@lists.sourceforge.net
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel

Reply via email to