QFX Format
Intel byte order

Information from File Format List 2.0 by Max Maischein.

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This file has been authored in the style of the INTERxxy.* file list
by Ralf Brown, and uses almost the same format.

Please read the file FILEFMTS.1ST before asking me any questions. You may find
that they have already been addressed.

         Max Maischein

Max Maischein, 2:244/1106.17
Max_Maischein@spam.fido.de
corion@informatik.uni-frankfurt.de
Corion on #coders@IRC
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DISCLAIMER:  THIS MATERIAL IS PROVIDED "AS IS".  I verify the information
contained in this list to the best of my ability, but I cannot be held
responsible for any problems caused by use or misuse of the information,
especially for those file formats foreign to the PC, like AMIGA or SUN file
formats. If an information it is marked "guesswork" or undocumented, you
should check it carefully to make sure your program will not break with
an unexpected value (and please let me know whether or not it works
the same way).

Information marked with "???" is known to be incomplete or guesswork.

Some file formats were not released by their creators, others are regarded
as proprietary, which means that if your programs deal with them, you might
be looking for trouble. I don't care about this.
--------------------------------------------

QFX files are yet another graphic file format used to store received
fax images. The .QFX file format is proprietary to Smith Micro Software, Inc.
and is used by the Quick Link II fax software.
The QFX file header is exactly 1536 bytes long. The fax pages themselves
are stored in byte aligned, bit reversed T4 format terminated with 6 EOL's.
See CCITT Recommendation T.4 for full documentation on this coding scheme.

OFFSET              Count TYPE   Description
0000h                   8 char   ID='QLIIFAX',0
0008h                   1 word   Number of pages in the QFX file
000Ah                   1 word   Number of scan lines on last page
000Ch                   1 dword  Number of scan lines for all pages
0010h                   1 word   Horizontal scaling
                                 1 - High res (200x200),
                                 2 - Normal res (200x100)
0012h                   1 word   Vertical scaling (always = 1).
0014h                  12 byte   reserved
0020h                 375 dword  Offsets of the single pages in the document.
                                 Page 1 always starts at offset 1536. The last
                                 non-zero dword points to the end of the last
                                 page, the first zero dword marks the end of
                                 the pages.
0600h                   ? byte   Start of fax page images

EXTENSION:QFX
OCCURENCES:PC
PROGRAMS:Quick Link II