🚀 go-pugleaf

ghost@aladdin.COM (L. Peter Deutsch) writes:

>Re <9210180251.AA06664@cookie-crisp>
>> 	There are some Fax drivers in GHostscript,
>> 	namely "dfaxhigh" and "dfaxlow".
>> 
>Ghostscript includes the CCITTFax *filters*, which can convert
>between ordinary bitmaps and G3/G4 format.  It doesn't currently have
>a plain fax *driver*.  I might add one in the next release if someone
>can give me some suggestions as to what parameters it might have that
>aren't already in the filters (e.g., bit/byte order swapping).

*aehem* ...?

The dfaxhigh and dfaxlow produce nearly poor g3-format, except that
one headerline (FAXMAGIC) is included and not accepted by the
faxmodems.
To solve this, comment out in the function "faxout_begin_page" the
statements
    fwrite ((char*)&hdr, sizeof(hdr), 1, faxp->fp);
    puteol (faxp);

and then you have a really g3-format.

Another problem could be the bitorder. You have to configure your
modem to use the right bitorder (which one was it ? :-).
If you want to build a little converter to change the bitorder, look
at the netfax-distribution and take the functions "init_swaptable" and
"bit_reverse" and build a little main() to do this for each byte of
the g3-file. I haven't looked how and why it works - but it works.

-- 
==================== Gruss: === Thomas === Huppertz  ========================
       HUPPERTZ EDV-Beratung, Thererstr. 10, 8083 Mammendorf, Germany 
               Tel. ++49-8145-1569, Fax. ++49-8145-8286 
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