2005.12.13 07:49 "Re: [Tiff] Writing EXIF data?", by Paul J. Lucas
I assume that is the reason why you feel the EXIF tag is undocumented. It's
> documented allright
It's in the header file, but not on the TIFFSetField manual page. Hence, it's undocumented.
Not properly implementing tag namespaces, LibTiff has troubles with this concept. How is it supposed to define GPSLatitudeRef, or, the other way around, how is it supposed to make sense of tag ID code 1, when it has no clue 'bout namespaces?
For EXIF at least, libtiff doesn't need to know anything about EXIF tags except the EXIF IFD pointer (which already has a #define for it in the header file). I merely want to insert a blob of binary data into the TIFF file that's being created and have the EXIF IFD pointer point to it. The libtiff library doesn't have to know or care about the contents of the blob.