efix



EFIX(1)                                                                EFIX(1)




NAME

       efix - convert between fax, text, bit-map and gray-scale formats


SYNOPSIS

       efix [ options ] file...



OPTIONS

       Where options are:


       -i f     the  input  image  is in format f. Default is to automatically
                determine the input type from its contents.


          fax   fax ("Group3") 1-D coded image


          text  text.  Line feeds separate lines, form feeds cause page breaks
                and tabs are expanded assuming tabs every 8 columns.


          pbm   raw PBM (portable bit map)


          tiffg3
                TIFF format with Group 3 (fax) compression.


          tiffraw
                TIFF format with no compression.


       -o f     write the output in format f.  Default is tiffg3.


          fax   fax ("Group3") 1-D coded image


          pbm   raw PBM


          pgm   raw  PGM  (Portable Gray Map).  Gray-scale values are produced
                by summing pixels in 4x4 pixel blocks.  The output file is 1/4
                of  the size given by -p.  The resulting image has 17 discrete
                values between 0 and 255.


          pcl   HP-PCL (e.g. HP LaserJet).


          ps    encapsulated Postscript (e.g. Apple Laserwriter).  The file is
                compressed using differential coding vertically and run-length
                coding horizontally.  There is no  provision  for  positioning
                the  image within the page and so the image will appear at the
                lower left corner of the page when printed.


          tiffg3
                TIFF format with Group 3 (fax) compression.


          tiffraw
                TIFF format with no compression.


       -n pat   use the printf(3) pattern path to  generate  the  output  file
                name.   Up  to  three  %d escapes will be replaced by the page
                number starting with 1 (e.g. -n order.%03d  will  create  file
                names order.001, order.002, etc.)


       -v lvl   print  messages of type in string lvl.  Each lower-case letter
                in lvl enables one type of message:

                   e - errors
                   w - warnings
                   i - information messages
                   a - program arguments
                   f - file format details

                The default is "ewi".


       -f fnt   use font file fnt for text.  The font file  for  an  WxH  font
                should  be  a bit map of an image of H rows and 256*W columns.
                Each successive WxH cell contains the bit map  for  characters
                with  codes  from  0 to 255.  The default is to use a built-in
                8x16 font.


       -s XxY   scale the input by a factor of X  horizontally  and  Y  verti-
                cally.   Scaling  does  not change the size of the output (use
                -p).  If Y is not specified it is assumed to be the same as X.
                Any  floating point value may be used for X and Y. The default
                is 1,1.


       -d R,D   displace the output right by R and down by D (opposite if neg-
                ative). See below for units.  Default is 0,0.


       -p WxH   truncate or pad the output to generate an image of width W and
                height H.  This does not  scale  the  input.   See  below  for
                units.   The  default is the size of the input image if it can
                be determined or A4 (215x297mm) if it can’t.


       -r XxY   assume an output device resolution of X by Y  dots  per  inch.
                If  Y is not specified it is assumed to be the same as X.  The
                default is the input resolution if it can be determined or the
                fax resolution of 204.1x195.6 dpi if it can’t.


       -R XxY   assume an input device resolution of X by Y dots per inch.  If
                Y is not specified it is assumed to be the  same  as  X.   The
                default is the input resolution if it can be determined or the
                fax resolution of 204.1x195.6 dpi if it can’t.


       -l n     place n lines per page during text input. Default is 66.


       -O f     overlay (logical OR) the image from file f  into  the  output.
                Use


       -M       ignore  all  other  options and copy the standard input to the
                standard output  while  applying  base64  (MIME)  encoding  as
                specified by RFC 1521.




FILES

       If no -n options are given, output is written to the standard output.



UNITS

       The  units of the W, H, R, and D values above are in inches by default.
       Any floating point value may be used.  Units  of  inches,  centimetres,
       millimetres  or  points  (72 per inch) can be used instead by appending
       one of the strings ‘in’, ‘cm’, ‘mm’, or  ‘pt’  to  the  argument  (e.g.
       -d2,4cm).



CUT AND PASTE

       The  -d and -p options allow efix to cut out images from received faxes
       for use in other faxes or documents.  The -d option specifies  the  top
       left  portion  of the desired image and the -p option gives the size of
       the cut image.  For example, the command
                   efix -d-5,-8 -p2,1 sample.001 >sig.001
       would cut out part of the input with its top left corner 5 inches  from
       the  left  edge  and  8 inches from top of the input image.  The output
       image would be 2 inches wide and 1 inch high.

       The -O option allows efix to superimpose two or more images.  The over-
       lay  image  must  be  in  fax format and cannot be scaled, truncated or
       shifted. However, multiple efix commands may be pipelined to  transform
       images before combining them.  For example, the command
                   efix -d4,8 signature | \
                   efix -O- letterhead | \
                   efix -O- letter.002 >letter.002.new
       will  shift  the  image in the file signature down 8 inches and right 4
       inches and combine (overlay) it with the images in the files letterhead
       and letter.002.



REFERENCES

       Gunter  Born,  "The File Formats Handbook", International Thompson Com-
       puter Press, 1995.



COPYRIGHT

       efix is copyright 1994 -- 1999 by Ed Casas.  It may be used, copied and
       modified under the terms of the GNU Public License.



DISCLAIMER

       Although  efix  has been tested it may have errors that will prevent it
       from working correctly on your system.  Some of these errors may  cause
       serious problems including loss of data.



SEE ALSO

       efax(1), ghostscript(1), pbm(5), pgm(5).



BUGS

       Only reads two types of TIFF compression formats.

       Does not write multi-page TIFF files (a feature).




3rd Berkeley Distribution        February 1999                         EFIX(1)

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