[sane-devel] cropping added to pixma_mp150 backend

[Nicolas Martin]

I've just tried the files you sent with an MP610 and Xsane, but at the
moment, I could not scan completely, scanning hangs during data
transfer. 
Don't know yet why this happens, I noticed you used some older pixma
backend files, so would it be possible that you add these changes to the
current git version files instead ? 

In the meantime, I'll try to understand where this issue happens. 
That's a big challenge to keep a backward compatibility with all models
supported in the pixma backend: the file pixma_mp150.c now supports 46
different Pixma models (all using almost the same protocol), that have
been issued by Canon since several years. 

Nicolas

Le dimanche 10 janvier 2010 à 18:17 +0100, Dr. Christian Scholz a
écrit :
> I have added a few lines to the pixma mp150 backend that crop the scan 
> lines in order to match exactly the selected scan area. pixma_mp150.c 
> and pixma.h are modified and contained in the attached tgz archive. 
> Cropping is switched on by defining the variable MYCROP in pixma.h. 
> Sorry for communicating that enhancement using this mail, I am not 
> familiar with the standard method.
> 
> By the way: I am achieving good scan results with my Canon MX860 if 
> setting gamma to 2.0.
> 
> Enhancements of pixma_mp150 I am interested in:
> - color management respectively color correction in backend
> - more configuration options, e.g. for initial gamma and for providing 
> the path to the scanner icc profile,
> - 48bit color depth
> 
> Best wishes for 2010
> 
> Christian Scholz
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