# Re: EOF detection

From: Oliver Rauch (oliver.rauch@rauch-domain.de)
Date: Mon May 07 2001 - 11:05:40 PDT

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  Marian Eichholz wrote:
  >
  > If the sane_read() gives SANE_STATUS_EOF, the whole action is discarded.
  > In other words:
  >
  > - the last valid scan data must be reported with SANE_STATUS_GOOD
  > - the SANE_STATUS_EOF must be reported without access to the buffer.

  In fact this is not defined very fine in the standard.
  But after a close look to the sources of scanimage/xscanimage/xsane
  it looks like all frontends do handle it the same.
  So we should mention in the standard that the also last sane_read
  that reutrns valid image data has to return with SANE_STATUS_GOOD.

  Bye
  Oliver

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