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<TITLE>sane-devel: Bug in stiff.c</TITLE>
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<H1>Bug in stiff.c</H1>
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<STRONG>From:</STRONG> Jaeger, Gerhard (<A HREF="mailto:gjaeger@sysgo.de?Subject=Re:%20Bug%20in%20stiff.c&In-Reply-To=<00111416042400.09493@gja>"><EM>gjaeger@sysgo.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Tue Nov 14 2000 - 06:49:16 PST
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0186.html">Scott Courtney: "Re: Bug in stiff.c"</A>
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Hi list, hi Peter,
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<BR>
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<P>it seems, that there's a bug in the TIFF output for scanimage (file stiff.c)
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<BR>
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according to RGB pictures.
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<BR>
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GIMP seems to ignore this incorrect TIFF-header, while kview
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<BR>
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produces rubbish...
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<BR>
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The problem:
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<BR>
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When writing the TIFF header, you have to specify the TAG
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<BR>
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"BitsPerSample", which tells a reader how many bits each sample
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<BR>
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has. The current version only specifies one value (8 or 16). This
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<BR>
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is wrong, as we have to specify one value for each channel (i.e
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<BR>
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for a 24bit RGB pic we must specify 8,8,8, see TIFF6.0 spec,
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<BR>
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page 24).
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<BR>
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The attached patch solves this problem - Peter you might
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<BR>
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apply the patch and test again!
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<BR>
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<P>Best regards
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<BR>
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Gerhard
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<BR>
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<BR><HR NOSHADE>
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<UL>
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<LI>text/x-c attachment: <A HREF="att-0184/01-stiff.patch">stiff.patch</A>
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</UL>
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<!-- attachment="01-stiff.patch" -->
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<P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20Bug%20in%20stiff.c&In-Reply-To=<00111416042400.09493@gja>">majordomo@mostang.com</A>
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</PRE>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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