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April 2012
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2012.04.19 13:48 "Re: TIFFSeekProc", by Olivier Paquet
On Thu, Apr 19, 2012 at 9:12 AM, Christopher Cameron <ccameron@qnx.com> wrote: > An issue came up in the development of a codec that uses libtiff. We are > passing the TIFFSeekProc down through some layers to lseek(). > > typedef toff_t (*TIFFSeekProc)(thandle_t, toff_t, int); > > Based on the definition, toff_t is always unsigned. Does this mean we can > expect libtiff will never ask for a negative offset, for example with > SEEK_END and SEEK_CUR? That's how it is for now as far as I can see. SEEK_END is only used with 0 and SEEK_CUR with positive offsets. I'd call it unfortunate design but sticking with it does not really limit what libtiff can do. Olivier