AWARE SYSTEMS
TIFF and LibTiff Mail List Archive

2003.04.16 14:14 "what to do when a LZW clear code is encountered", by John Carter

Hi

I was wondering

if a clear code (256 dec) is encountered in a LZW compressed strip after retrieving 512 + codes, ie the code length is 10 or greater, as well as wiping the table for positions 258 and above, should the codes retrieved counter (what's used to determine when to switch from 9 to 10, 10 to 11, 11 to 12 bit code lengths) also be reset since the table has been shrunk. I don't think this is explicitly mentioned in the v6 spec


thanks jc

____________________________

John Carter
BSS O&M Development group,
Motorola,
Mahon Industrial Estate,
Cork.