zvbi-chains(1)                 VBI proxy wrapper                zvbi-chains(1)

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)