# Re: Xsane problems

From: Oliver Rauch (oliver.rauch@Wolfsburg.DE)
Date: Sun Feb 20 2000 - 10:30:20 PST

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  - In reply to: Henrik Johansson: "Xsane problems"
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  Henrik Johansson wrote:

  > Hi
  >
  > Has anyone experienced any trouble when using Xsane with the Snapscan backend?
  > When using this backend with the Snapscan 1212U patch applied in Xsane, I
  > can't see the resolution slider. This problem has never showed in other
  > frontends like xscanimage.
  >
  > I got this on STDOUT when running Xsane:
  > Init resol: 1
  > scansource_selection: unknown constraint type 0
  > Init resol: 1
  > scansource_selection: unknown constraint type 0
  > Resolution option: -1
  > find_best_resolution: unknown constraint type 0
  > set_resolution: unable to set resolution
  > Resolution option: -1
  > find_best_resolution: unknown constraint type 0
  > set_resolution: unable to set resolution
  > Resolution option: 1
  > Init resol: 1
  > scansource_selection: unknown constraint type 0
  >

  Hi Henrik,

  xsane-0.57 will solve this problem.
  The problem is that the snapscan backend returns an invalid pointer
  when sane_get_option_descriptor is called with negative values.
  Normally this sould be fixed in the backend but because there are
  other backends who return invalid pointers I decided to solve
  the problem in xsane.

  If you want a quick fix edit snapscan.c and change the test for
  if (option<max_options)

  to

  if ((option>=0) && (option<max_options))

  Bye
  Oliver

      --
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  - Next message: Oliver Rauch: "xsane-0.57 available --- please try"
  - Previous message: Oliver Rauch: "Re: Xsane-0.55: scan resolution selection (Epson 1200S, CVS Sane)"
  - In reply to: Henrik Johansson: "Xsane problems"
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