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Re: [pwc] VIDIOCPWCMPTRESET

To: Gilles GIGAN <>
Subject: Re: [pwc] VIDIOCPWCMPTRESET
From: "David N. Lombard" <>
Date: Thu, 12 Jun 2008 20:36:49 -0700
Gilles GIGAN wrote:
> Hi all,
> In the intialisation section of my application, I reset the pan & tilt 
> of a Logitech QuickCam Sphere (046d:08b5) using 
> ioctl(VIDIOCPWCMPTRESET). Sometimes during the reset, the webcam stays 
> stuck after panning to one of its exteme position (the tilt doesnt and 
> comes back to the center).

Hmmm, I've never seen that. I wonder if it's a version thing, as my unit 
is now several years old...

In any event, I added pan/tilt to camstream 0.26.3.  I use the 
VIDIOCPWCMPTRESET in a "reset-to-(0,0)" function to ensure the position 
in case of manual adjust while powered off.  Just used this control 
about 30 times with consistent results.

-- 
David N. Lombard
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