face(6) [plan9 man page]

FACE(6) 							   Games Manual 							   FACE(6)

NAME

       face - face files

DESCRIPTION

       The  directory  /lib/face  contains a hierarchy of images of people.  In that directory are subdirectories named by the sizes of the corre-
       sponding image files: 48x48x1 (48 by 48 pixels, one bit per pixel); 48x48x2 (48 by 48 pixels, two bits per pixel); 512x512x8  (512  by  512
       pixels,	eight  bits  per  pixel);  512x512x24 (512 by 512 pixels, twenty-four bits per pixel (3 times 8 bits per color)).  The large files
       serve no special purpose; they are stored either as bitmaps (see bitmap(6)) or as picture files (see picfile(9.6).  The small files are the
       `icons'	displayed by seemail (see mail(1)); their format is special.

       Icons  are stored as text, one line of the file to one scan line of display.  Each line is divided into 8-bit, 16-bit, or 32-bit big-endian
       words, stored as a list of comma-separated hexadecimal C constants, such as:

	      0x9200, 0x1bb0, 0x003e,

       This odd format is historical and the programs that read it are somewhat forgiving about blanks and the need for commas.

       The files /lib/face/*/.dict hold a correspondence between users at machines and face files.  The format is

	      machine/user directory/file.ver

       The machine is the domain name of the machine sending the message, and user the name of the user sending it, as recorded in  /sys/log/mail.
       The  directory  is  a further subdirectory of (say) /lib/face/48x48x1, named by a single letter corresponding to the first character of the
       user names.  The file is the name of the file, typically but not always the user name, and ver is a number to distinguish different images,
       for example to distinguish the image for Bill Gates from the image for Bill Joy, both of which might otherwise be called b/bill.  For exam-
       ple, Bill Gates might be represented by the line

	      microsoft.com/bill b/bill.1

       If multiple entries exist for a user in the various .dict files, seemail chooses the highest pixel size less than or equal to that  of  the
       display on which it is running.

       Finally,  or  rather firstly, the file /lib/face/.machinelist contains a list of machine/domain pairs, one per line, to map any of a set of
       machines to a single domain name to be looked up in the .dict files.  The machine name may be a regular	expression,  so  for  example  the
       entry

	      .*research.att.com    astro

       maps any of the machines in AT&T Research into the shorthand name astro, which then appears as a domain name in the .dict files.

SEE ALSO

       mail(1), tweak(1), bitmap(6)

																	   FACE(6)

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COMPFACE(1)						      General Commands Manual						       COMPFACE(1)

NAME

       compface, uncompface - compress and expand 48x48x1 face image files

SYNOPSIS

       compface [ infile [ outfile ] ] ...

       uncompface [-X] [ infile [ outfile ] ] ...

DESCRIPTION

       compface  is  a filter for generating highly compressed representations of 48x48x1 face image files.  uncompface is an inverse filter which
       performs an inverse transformation with no loss of data.  The algorithm used is highly tuned for its purpose and  achieves  better  than  a
       five to one compression ratio on average.  Arguments operate identically for both programmes.  The first argument, if present, causes input
       to be taken from the named file instead of from standard input unless it is the string ``-''.  A second argument, if present, causes output
       to  go to the named file instead of to standard output unless it is the string ``-''.  Subsequent pairs of arguments may be used to specify
       further pairs of input and output files.

       The input format for compface (and the output format for uncompface) is 48 lines each of 3 sixteen bit hexadecimal integers,  comma  termi-
       nated  in  C  initialiser  style.  The output format of compface (and the input format for uncompface) is some number of lines made up of a
       space followed by printable characters (in the range ``!'' to ``~'' inclusive).	The first line contains 72 characters and following  lines
       contain 79 characters except that the last line may be short.

       This  version  of compface has been patched to also be able to handle normal XBM images.  uncompface will produce XBM output only if the -X
       switch is applied.

       The amount of compression obtained varies between face image files but the output of compface averages less than 200 characters.  The aver-
       age number of output lines is three.

DIAGNOSTICS

       Exit status is normally 0.  Possible errors include IO errors when opening, reading or writing files, format errors in compface input files
       and invalid arguments.  Each results in an explanatory message on standard error and an exit status of 1.  A warning will  be  produced	if
       compface detects extra input data.

BUGS

       Nominating standard input as input more than once does not work.

SEE ALSO

       Compface(3)

								  25 January 1990						       COMPFACE(1)

Linux and UNIX Man Pages

face(6) [plan9 man page]

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