Re: [linux-uvc-devel] PAN+TILT for Logitech BCC950 ConferenceCam

[Kieran B. <kie...@id...>]

Hi Andrej,

On 17/06/2019 12:33, Andrej Pashnin wrote:
> Dear developers, 
> 
> I would like to control (pan-tilt-zoom) the following conference camera:
>> Bus 001 Device 005: ID 046d:0837 Logitech, Inc. BCC950 ConferenceCam
> It's a PTZ (pan-tilt-zoom) camera and I can control all 3 parameters
> with a remote control device.
> 
> However, using the *v4l2-ctr* utility I can only change the ZOOM
> parameter. It doesn't contain neither PAN nor TILT in the list of
> controllable parameters.
> 
> *Question #1. *
> Why? 


Could you list the controls that are provided please?

I.e. the output of :
	v4l2-ctl -d /dev/video0 -l

(where /dev/video0 is your device, and updated if necessary)

> 
> *Question #2.*
> Is it possible to add this options to the driver? I don't mind writing
> some linux kernel module if necessary. I just don't know where I should
> start.

It depends on how the camera exposes the controls. They could be custom
properties or non-standard controls from the camera which the windows
driver knows about specifically?

> I also know that it can be controlled programmatically with DirectShow
> under Windows. 
> 
> 
> Thank you in advance for any suggestions.
> 
> Cheers, 
> Andrey
> 
> 
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-- 
Regards
--
Kieran