Re: [Ekiga-list] webcam image cropped instead of scaled down

[Damien Sandras <dsandras seconix com>]

Hi,

Le mardi 15 janvier 2008 à 09:25 +0100, Andreas Demmer a écrit :
> Hi,
> 
> Ekiga crops my image und only shows the upper left part. Reading the FAQs, I 
> learned  that this could happen because my driver delivers a resolution 
> higher than the native Ekiga resolution 176x144  and Ekiga fails to scale 
> down the image correctly (FAQ topic 7.1.2.). And I that I should report the 
> problem to the mailing list. So here I am! :-)
> 
> I use my webcam with Michel Xhaards GSPCA driver with the latest release from 
> december 24th. It is configured to deliver 320x240px which is needed for some 
> other applications, so configuring the driver to deliver a lower resolution 
> would not be my preferred solution.
> 
> Any other ideas how I could fix this?
> 

There is no way.

The normal behavior of a driver is the following :
- Ekiga asks for 176x144, the driver does not support it
- Consequently the driver reports "FAILED"
- Ekiga asks for 320x240, the driver supports it
- Consequently the driver reports "OK"
- Ekiga captures at 320x240 and resizes to 176x144 which is what it
needs

The behavior of the gspca driver is the following :
- Ekiga asks for 176x144, the driver does not support it
- Instead of reporting a failure, the driver starts capturing 320x240
images, and crop them to pass 176x144 images to Ekiga

Ekiga can do nothing, you should report the problem to the gspca driver
author.

Yannick, it could be useful to add this to the WIKI (FAQ).
-- 
 _     Damien Sandras
(o-      
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