- 2004.09.16 19:23 "Re: [Tiff] BigTIFF Tag Value Count issue", by Frank Warmerdam
- 2004.09.16 22:39 "[Tiff] Re: BigTIFF Tag Value Count issue", by Ian Ameline
-
2004.09.17 00:09 "Re: [Tiff] BigTIFF Tag Value Count issue", by Bob Friesenhahn
-
2004.09.17 00:32 "Re: [Tiff] BigTIFF Tag Value Count issue", by Joris Van Damme
-
2004.09.17 01:54 "Re: [Tiff] BigTIFF Tag Value Count issue", by Bob Friesenhahn
- 2004.09.17 02:29 "Re: [Tiff] BigTIFF Tag Value Count issue", by Bob Friesenhahn
-
2004.09.17 03:08 "Re: [Tiff] BigTIFF Tag Value Count issue", by Chris Cox
-
2004.09.17 04:20 "Re: [Tiff] BigTIFF Tag Value Count issue", by Bob Friesenhahn
-
2004.09.17 04:39 "Re: [Tiff] BigTIFF Tag Value Count issue", by Chris Cox
-
2004.09.17 11:25 "Re: [Tiff] BigTIFF Tag Value Count issue", by Joris Van Damme
- 2004.09.17 14:31 "Re: [Tiff] BigTIFF Tag Value Count issue", by Bob Friesenhahn
-
2004.09.17 11:25 "Re: [Tiff] BigTIFF Tag Value Count issue", by Joris Van Damme
-
2004.09.17 05:46 "Re: [Tiff] BigTIFF Tag Value Count issue", by Frank Warmerdam
-
2004.09.17 11:40 "Re: [Tiff] BigTIFF Tag Value Count issue", by Joris Van Damme
- 2004.09.17 13:11 "Re: [Tiff] BigTIFF Tag Value Count issue", by Frank Warmerdam
-
2004.09.17 15:10 "RE: [Tiff] BigTIFF Tag Value Count issue", by Fernando Loygorri
-
2004.09.17 15:10 "RE: [Tiff] BigTIFF Tag Value Count issue", by Bob Friesenhahn
-
2004.09.17 15:55 "RE: [Tiff] BigTIFF Tag Value Count issue", by Fernando Loygorri
- 2004.09.17 16:00 "Re: [Tiff] BigTIFF Tag Value Count issue", by Frank Warmerdam
- 2004.09.17 16:13 "Re: [Tiff] BigTIFF Tag Value Count issue", by Joris Van Damme
- 2004.09.17 16:43 "RE: [Tiff] BigTIFF Tag Value Count issue", by Bob Friesenhahn
- 2004.09.17 21:41 "RE: [Tiff] BigTIFF Tag Value Count issue", by Chris Cox
-
2004.09.17 15:55 "RE: [Tiff] BigTIFF Tag Value Count issue", by Fernando Loygorri
-
2004.09.17 15:10 "RE: [Tiff] BigTIFF Tag Value Count issue", by Bob Friesenhahn
-
2004.09.17 11:40 "Re: [Tiff] BigTIFF Tag Value Count issue", by Joris Van Damme
- 2004.09.17 11:38 "Re: [Tiff] BigTIFF Tag Value Count issue", by Joris Van Damme
-
2004.09.17 04:39 "Re: [Tiff] BigTIFF Tag Value Count issue", by Chris Cox
-
2004.09.17 04:20 "Re: [Tiff] BigTIFF Tag Value Count issue", by Bob Friesenhahn
- 2004.09.17 06:35 "Re: [Tiff] BigTIFF Tag Value Count issue", by Rob van den Tillaart
-
2004.09.17 01:54 "Re: [Tiff] BigTIFF Tag Value Count issue", by Bob Friesenhahn
-
2004.09.17 00:32 "Re: [Tiff] BigTIFF Tag Value Count issue", by Joris Van Damme
- 2004.09.19 12:31 "Re: [Tiff] BigTIFF Tag Value Count issue", by Andrey Kiselev
- 2004.09.19 16:43 "Re: [Tiff] BigTIFF Tag Value Count issue", by Joris Van Damme
2004.09.16 19:23 "Re: [Tiff] BigTIFF Tag Value Count issue", by Frank Warmerdam
Joris,
My suggestion is that the tag size (aka count field) should be only 4 bytes mostly because I don't want people writing extremely large tag values. Typical libraries (such as libtiff) will actually load all the tag values into memory as part of reading the data.
I agree with the various points and counter-points you raise. They match up with the sorts of arguments I have with myself with looking at design decisions like this. On balance I feel there is no compelling reason to support tag values larger than 4GB and reasons to believe that including such large tag values in a file (even a ways into the future) would amount to a DOS attack on the app that tries to read the file!
I *do* think that we should allow and support individual tiles or strips larger than 4GB mainly because some folks still like to write their files as one big strip and I would hesitate to forbid this. Well, I would *like* to forbid this but I'm not sure it would be wise. So I do think the TileByteCount and StripByteCount tags should be 8bit integers.
Best regards,
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up | Frank Warmerdam, warmerdam@pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | Geospatial Programmer for Rent