-
ANNOUNCE: Welcome Mark Larson
Mark has joined the project to give the code the once over from an optimization point of view.
Mark has a excellent track record in producing major wins for other CPU bound software, and he has already spotted some optimizations in heavily called code inside pnm2ppa.
Depending on Mark's workload and desires, pnm2ppa might get a small (or large) bump in performance.
When a release is ready for testing, it will be announced.
Andrew
2004-06-15 14:01:38 UTC by ajv
-
Useful Mac OS links about pnm2ppa
I came across some useful links about pnm2ppa on Mac OSX.
You can of course build the source tarball from this site on
OS X, but someone has already done this and nicely packaged pnm2ppa-1.12 with an installer for OS X 10.2.x
See
http://www.linuxprinting.org/macosx/pnm2ppa/
I have tested this on my PowerBook G4 with OS X 10.2.6,
and it works fine.
Someone else has also adapted the Networking advice
http://pnm2ppa.sourceforge.net/PPA_networking/PPA_networking.html
(from our home page) for printing from Mac OSX
(also OS 9 and earlier, it seems) to a HP PPA printer attached to a Windows computer on the same network
as the Mac (using the postscript emulation method, not pnm2ppa).
See
http://iharder.sourceforge.net/macosx/winmacprinter/
2003-10-03 03:44:57 UTC by duncan_haldane
-
Current/Future Status of pnm2ppa project
With the release of pnm2ppa-1.12 in November 2002, the pnm2ppa project is probably completed. The HP PPA printers are now quite obsolete, though my HP-722C is working fine.
(It's no longer my main printer) .
pnm2ppa-1.12 has been downloaded over 1000 times, and no reproducible bugs seem to have been reported. If any problems are found, users should try pnm2ppa-1.04, the previous stable release, which still comes with many distributions (like Red Hat). Pnm2ppa-1.12 ended up having a substantially-reorganized mechanism for organizing the way the data to be printed was organized into sweeps of the print head, as compared to pnm2ppa-1.04. It should in principle produce better rendering of graphics images, but if any bugs are found, they could be due to the changes between 1.04 and 1.12. There is a rather complex and ad-hoc algorithm for alternating between black ink and color ink print sweeps that could be rationalized and simplified, but that's not going to happen (even better, the rather primitive and ad-hoc image processing used by pnm2ppa should be discarded, and the whole thing replaced by gimp-print processing, but that won't happen either).
If any reproducible bugs in pnm2ppa-1.12 are found, and reported to me (please file a bug report here AND email me at duncan_haldane@users.sourceforge.net ), I'll try to fix them if I have time, and if my HP-722C is still working. Otherwise, pnm2ppa should be regarded as a dormant but successfully-completed project.
2003-04-06 23:56:43 UTC by duncan_haldane
-
ANNOUNCE: pnm2ppa-1.12 released
UPDATED: pnm2ppa-1.11 could hang at the end of a page. This bug is fixed in pnm2ppa-1.12
--------------------------------------------------.
pnm2ppa-1.11 is a bugfix release to pnm2ppa-1.10.
All pnm2ppa-1.10 users should update to 1.11.
It fixes problems with HP820C printers, and also a potential memory leak in pnm2ppa-1.10.
It should provide better printing quality than the very stable pnm2ppa-1.04, but is not yet as well-tested.
Compression of color data is turned on for the first time in pnm2ppa-1.11. It seems to work, but can be turned off in the configuration file, if it turns out to cause problems.
2002-11-10 12:46:09 UTC by duncan_haldane
-
Update: HP 820C problems with pnm2ppa-1.10 : use v.1.11pre2
HP820C users may experience problems with pnm2ppa-1.10. In that case, go back to the stable
pnm2ppa-1.04 for the moment. I am looking for HP 820C users to help me debug this problem.
Update: (October 2, 2002)
These issues are probably fixed in pnm2ppa-1.11pre2.
Please test and report.
Please contact me with examples of postscript files that fail to print with pnm2ppa.-1.11pre2 on HP820C, but print fine with pnm2ppa-1.04
(contact me :duncan_haldane at users.sourceforge.net). This problem does not affect HP710/720 users.
Update (October 4 2002)
pnm2ppa-1.11pre2 fixes a memory leak in
the pre1 release.
2002-09-21 06:17:03 UTC by duncan_haldane
