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November 2006
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2006.11.19 22:10 "Re: tiffinfo large file issue", by Paul Surgeon
On Sunday 19 November 2006 23:20, Bob Friesenhahn wrote: > The tiffinfo utility primarily reads TIFF directories, which may occur > almost anywhere in the file. If the TIFF directory is placed at the > end of a file which is over 2GB in size, then a file offet value > bigger than 2GB is necessary to retrieve it. Systems which do not > support large files often use a signed 32-bit integer value to > represent file offsets (off_t type), and this value overflows at the > 2GB offset. Some systems (e.g. Linux and Solaris) require special > compilation options in order to use larger file offsets (signed 64-bit > integer) in programs so that the programs can support large files. > > If all the offsets necessary to access the TIFF directories are less > than 2GB, then it may be possible to usefully access the file even if > the image raster data causes the file to be larger than 2GB. > > Bob That could be the problem. Is there anyway to rewrite the files and make sure the TIFF directories are at the front of the files? Paul