zvbi-chains(1)

💖 zvbi-chains — the VBI proxy wrapper, bestie edition 💖

okay so you found yourself a page from section 1 of the manual, and it's literally called zvbi-chains — aka the VBI proxy wrapper. sit down, grab a boba, we're doing this 🧋✨

✨ NAME ✨

zvbi-chains — VBI proxy wrapper 🎀

🌸 SYNOPSIS 🌸

zvbi-chains [ options ]

🦋 DESCRIPTION 🦋

so zvbi-chains is this tiny little wrapper whose whole job is to run the VBI application you hand it on the command line — but with a lil ✨twist✨. while that app is running, it overloads several C library calls (think open(2) and read(2), the classics 💅) so you can force the application to go through the VBI proxy instead of touching device files directly. no cap, that's the whole vibe.

how does it pull that off? LD_PRELOAD, obviously 🫶 — that's what intercepts the C library calls and redirects them into functions living in the libzvbi-chain shared library instead.

and the parameters you pass on the command line (say, a device path 👀) get handed off to that library by means of environment variables. sneaky? iconic? yes.

💅 OPTIONS 💅

• -dev path — the path of a VBI device you wanna read data from. 🎀
• -debug level — turns debug output on. levels, bestie: 0 = off (that's the default, so chill); 1 = warnings; 2 = all the messages, every last one, no filter 💀
• -help — prints a short description of all the command line options. a lil menu, if you will 🍓

👑 SEE ALSO 👑

• zvbid(1)
• v4l-conf(8)
• http://zapping.sourceforge.net/ (that's the homepage 🌈)

🌟 AUTHOR 🌟

Tom Zoerner (tomzo AT users.sourceforge.net) — real one 🫡

🎀 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.

⚠️ fr fr, read that warranty part again. there is no warranty, and that is not a drill 😭

and that's the whole page, bestie — this was zvbi-chains(1), the VBI proxy wrapper, served up with love 💖 go forth and proxy responsibly 🦋🌸