AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

Thread

1994.09.16 04:17 "TIFF Bit Ordering Versus Fill Order", by John M Davison
[...]
1994.09.20 13:25 "RE: Now that you mention bit order...", by Scott Wagner
1994.09.22 22:50 "Re: Now that you mention bit order...", by John M Davison
1994.09.22 23:49 "Re: Now that you mention bit order...", by Sam Leffler
[...]

1994.09.22 22:50 "Re: Now that you mention bit order...", by John M Davison

And that, IMHO, is the bit-order confusion story in a nutshell.

Mr. Wagner left out one fact, namely that the notion of "native machine bit order", as it exists in Sam Leffler's TIFF interface software, is nonsensical.

While a "bit order" issue certainly does come up when dealing with rendering/scanning systems that erroneously permute bits, the handling of this erroneous behavior is the responsibility of the associated drivers, not of any device-independent TIFF interface software (such as what Leffler has written).

Thus, the notion of "native machine bit order" should be expunged from Sam Leffler's TIFF interface software. Leffler's software has no business whatsoever worrying about rendering/scanning device "bit order".

--
John Davison
Electronic Mail: davisonj@ecn.purdue.edu
WWW Home Page: <http://en.ecn.purdue.edu:20002/~davisonj/HomePage.html>