Thread (5 messages) 5 messages, 2 authors, 2009-06-02

Re: [PATCH] appletouch: Improved finger detection

From: Jeremy Huddleston <hidden>
Date: 2009-06-01 07:35:53

On May 7, 2009, at 19:59, Dmitry Torokhov wrote:
HI Jeremy,

On Tue, May 05, 2009 at 12:10:34PM -0700, Jeremy Huddleston wrote:
quoted
The appletouch driver is prone to reporting multiple fingers when  
only
one is
pressing.  The appletouch driver queries an array of pressure sensors
and
counts local maxima in pressure to determine the number of  
fingers.  It
just
does this on the raw values, so a data stream like:

0 100 250 300 299 300 250 100 0

actually registers as 2 fingers.

This patch updates the logic to ignore small dips in pressure that  
are
less
than the threshold.
Does it still detect 2 fingers as 2 fingers when they are held  
together?
I just wanted to follow up on this patch[1], since I haven't seen any  
movement.  It's fairly trivial and I've been using it for the past  
month with great success (yes, it still detects 2 fingers properly).   
Is there hope that this change can get merged soon?

Thanks,
Jeremy

1: http://launchpadlibrarian.net/26305586/appletouch.patch
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