[sane-devel] Re: Avision backend
Rene Rebe
rene.rebe at gmx.net
Thu Jan 17 18:21:24 GMT 2002
Hi.
From: abel deuring <a.deuring at satzbau-gmbh.de>
Subject: Re: [sane-devel] Re: Avision backend
Date: Thu, 17 Jan 2002 18:43:27 +0100
> Jose Paulo Moitinho de Almeida wrote:
> >
> > On Wednesday 16 January 2002 23:44, Rene Rebe wrote:
> > > Hi all.
> > >
> > > I just merged our latest updates into the official sane CVS
> > > repository, the feature freeze is next monday - and I had to update
> > > some URLs anyway.
> > >
> >
> > I have been busy lately but, from my viewpoint, the main problems (directly
> > and indirectly) related to the backend are:
> >
> > - hpusbscsi+sane+avision will not handle large transfers. It is necessary to
> > use a large SANE_SG_BUFFERSIZE. Is it easy to fix?
>
> use sanei_scsi_open_extended instead of sanei_scsi_open. The former
> function has one more parameter, the buffer size. On return, you should
> check, if you got the buffer size you wanted. If
> sanei_scsi_open_extended returns a too small value for your purposes,
> you can call an appropriate DBG statement and return an error to the
> caller.
Ok. The only problem we have is: that the calibration data seems to
get rather big (200kB - 400kB?) and it _seems_ that it has to be
transfered with one SCSI command. (From the windows-log they seem to
be also using a single command ...). I'm not such a SCSI freak - so is
it possible to devide a SCSI command into single small ones?
> Abel
k33p h4ck1n6
René
--
René Rebe (Registered Linux user: #248718 <http://counter.li.org>)
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