Lawrence Glaister wrote:
>
> I am using xsane 0.61 with 1.01/1.02/1.03 versions of sane.
> I have a web cam (Creative Labs webcam 3 USB) on one usb port and usb
> scanner (Agfa 1212u) on the other port.
> xscanimage correctly sees both devices and allows me to chose the input
> device.
> How do I get xsane to use the scanner instead of the webcam?
>
> - A second problem with xsane and the webcam is that yellow areas of the
> picture show up as blue. I suspect that xsane is expecting an rgb image, but
> most webcams return a bgr or is it gbr? It may be useful to add a v4l
> interface config that allows swapping the rgb components.
>
> - A third problem with the xsane v4l interface, is that it appears to be
> using the wrong buffer for pulling its data.... ie, the first preview gives
> a blank image (black) and the second attempt gives a correct image... this
> continues... the preview data is always 1 picture behind the last picture
> taken from the camera. I know the ov511 camera driver has 2 image buffers
> and toggles between them. This can probably be fixed with a v4l sync call.
>
>
Hi Lawrence,
- there is no xsane v4l interface, may be you wanted to say sane v4l interface
- xsane is known not to work fine with v4l, I think xscanimage does not
work much better. This are problems of the v4l backend.
- There are several ways to make xsane start with your scanner backend:
1) for xsane-0.61:
export SANE_DEFAULT_DEVICE=snapscan
2) if you do not use the v4l backend, set a comment in dll.conf before v4l
3) call "xsane snapscan" or set an alias
Bye
Oliver
-- Homepage: http://www.wolfsburg.de/~rauch sane-umax: http://www.wolfsburg.de/~rauch/sane/sane-umax.html xsane: http://www.wolfsburg.de/~rauch/sane/sane-xsane.html E-Mail: mailto:Oliver.Rauch@Wolfsburg.DE-- Source code, list archive, and docs: http://www.mostang.com/sane/ To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com
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