Scaling incoming faxes

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I've got a question about processing fax pages after they've been received.

After recently moving mgetty+sendfax into production, we noticed a problem
that appearently our previous faxing system automagically accounted for.
It seems that one company that sends us a significant number of faxes has
been (probably forever, we never noticed) sending us legal sized faxes.
When printing the legal sized fax on a letter sized printer (using g3tolj),
the last couple inches come out on a second page.  I need to scale the fax
to fit on letter size paper.

I know I can use the method suggested in the
samples/new_fax.all/print.module file
(g32pbm->pnmscale->pgmtopbm->pbmtolj), but on my system, this is
unbelievably slow - about 1 minute per page.  g3tolj is much faster, but
doesn't do scaling (AFAIK).

I'm also converting the the g3 files into a single, multipage TIFF file
using the TIFF utilities from ftp.sgi.com, so if those files can somehow be
massaged into letter sized output suitable for an HP printer, I could go
that route.

Any suggestions appreciated.  Thx.

-- 
Devin Redlich
devin@pctc.com