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NAME

       zvbi-chains - VBI proxy wrapper

SYNOPSIS

       zvbi-chains [ options ]

DESCRIPTION

       zvbi-chains is a small wrapper which executes the VBI application given
       on the command line while overloading several C library calls (such  as
       open(2)  and  read(2))  so that the application can be forced to access
       VBI devices via the VBI proxy instead of device files directly.

       LD_PRELOAD is used to intercept C library calls and call  functions  in
       the  libzvbi-chain  shared  library  instead.  Parameters  given on the
       command line (e.g. device path) are passed to the library by  means  of
       environment variables.

OPTIONS

       -dev path
              Path of a VBI device from which to read data.

       -debug level
              Enables  debug  output: 0 = off (default); 1 = warnings, 2 = all
              messages.

       -help  Print a short description of all command line options.

SEE ALSO

       zvbid(1), v4l-conf(8)
       http://zapping.sourceforge.net/  (homepage)

AUTHOR

       Tom Zoerner (tomzo AT users.sourceforge.net)

COPYRIGHT

       Copyright (C) 2003, 2004 Tom Zoerner

       This program is free software; you can redistribute it and/or modify it
       under  the  terms of the GNU General Public License as published by the
       Free Software Foundation; either version 2 of the License, or (at  your
       option) any later version.

       This  program  is  distributed  in the hope that it will be useful, but
       WITHOUT  ANY  WARRANTY;  without   even   the   implied   warranty   of
       MERCHANTABILITY  or  FITNESS  FOR  A  PARTICULAR  PURPOSE.  See the GNU
       General Public License for more details.

       You should have received a copy of the GNU General Public License along
       with this program; if not, write to the Free Software Foundation, Inc.,
       675 Mass Ave, Cambridge, MA 02139, USA.

                                                                zvbi-chains(1)



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