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)