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September 2004
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2004.09.17 15:10 "Re: BigTIFF Tag Value Count issue", by Fernando Loygorri
> > Does anyone know if stuff like PDA's and such have efficient-to-use
> > 64bit integer datatypes? I am somewhat doubtful.
Java data types are all signed, so the maximum positive value of an 8-bit
long is cut in half.
> Is it allowable to have BigTIFF not work on those machines,
> but have classic TIFF still in working order? Perhaps a structure
> like...
>
> #ifdef BIGTIFF_SUPPORT
> if file is tiff classic {
> #endif
> tiff classic supporting code
> ** this includes reporting error when suffering the consequences
> of getting a BigTIFF file **
> #ifdef BIGTIFF_SUPPORT
> } else {
> bigtiff supporting code
> }
> #endif
I understand that libtiff is written in C, but I believe that a TIFF
specification should not assume anything about implementation languages.
If BigTIFF defines unsigned 64-bit quantities, it will make life for
Java applications more difficult and possibly slower, although not
impossible.
Regards,
FGL