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April 2002

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2002.04.08 20:18 "TIFF_BYTE fields", by Dwight Kelly

I think I've found a problem in the tag writing code for fields of type
TIFF_BYTE. If a TIFF_BYTE tag has a length of 1-4 bytes, the value gets
written to the offset field of the tag in the directory. According to the
TIFF 6.0 spec, the bytes are 'left-justified'. 

The libtiff routine TIFFWriteByteArray()  seems to assume that the
variable is always 32-bits and will not work correctly for a uint8
variable and a TIFF_BYTE field with length = 1.

I'm working on a fix but wanted to see if anyone else has noticed the
problem.

-- 
Dwight Kelly
Apago, Inc.  
4080 McGinnis Ferry Rd  Suite 601
Alpharetta, GA 30005
voice:(770) 619-1884  fax:(770) 619-1885
email: dkelly@apago.com web: http://www.apago.com