[sane-devel] sane-sp15c and Fujitsu 620c: Help needed for plumbing backend t

Garrick Sitongia sitongia@hotmail.com
Thu, 25 Mar 2004 10:25:08 -0800


When I run scanimage, sane chooses the backend to use based on autodetection 
result. How do I direct it to using the avision backend?

Garrick

>Date: Thu, 25 Mar 2004 11:17:06 -0500 (EST)
>
>
>another option might be to try the avision backend instead. it does not
>support all of the fetures of the sp15/300/600, but it may have better
>support for the features you need.
>
>allan
>
>On Thu, 25 Mar 2004, Garrick Sitongia wrote:
>
> > The brightness and contrast levels are presently not supported by the 
>sp15c
> > backend. These are presently hardcoded at 128. But I was able to get it
> > working in the hardware by adding "scanf" statements in sp15c.c. 
>Scanimage
> > stops and I can enter numbers for brightness and contrast each time I 
>run
> > scanimage.
> >
> >    scanf("%d", &c);    /* my code */
> >   dev->brightness = c;
> >   dev->threshold = 128;
> >    scanf("%d", &c);    /* my code */
> >   dev->contrast = c;
> >
> > How instead do I pass these numbers to the backend from scanimage? Where
> > scanimage would get them the usual way from command line args?
> >
> > Garrick
> >
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