LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
December 2005
Previous Thread
Next Thread
Previous by Thread
Next by Thread
Previous by Date
Next by Date
Contact
The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems
Thread
2005.12.13 18:08 "Re: Writing EXIF data?", by Joris Van Damme
Paul, Paul J. Lucas wrote: > I *could* do it that way, but, since I knew from the very > beginning that doing such is currently impossible with libtiff, > I asked about merely setting the entire EXIF metadata as a > binary blob in a single shot. I've already constructed it. Since EXIF data is an IFD, and some tag values may be longer the 4 bytes, there's offsets there. Thus, how to build that 'blob' depends on where you're going to write it. I hope you were aware. > > ... but apart from understanding there's little I can do. > > Then you had/have no reason to reply. Oh, well, that's nice. You know what, I'll give you your money back. > > I recommend you explain how you wrote the 'blob' > > Why is that relevant? Oh, just me trying to be helpful, anticipating the problem I explained above, without having a reason to reply. > This is exactly the > same as, say, setting the ICC profile via TIFFSetField: I > already have the ICC profile data as a blob. How I created it > is irrelevant. No it's not at all exactly the same, and yes how you created it is relevant, because of the above explained offset issue. I hope you were aware and require no extra help, because I've no reason to reply any further. Joris Van Damme info@awaresystems.be http://www.awaresystems.be/ Download your free TIFF tag viewer for windows here: http://www.awaresystems.be/imaging/tiff/astifftagviewer.html