Awesome
description
w_scan2 is a small channel scan tool which generates ATSC, DVB-C, DVB-S/S2 and DVB-T/T2 channels.conf files.
It's based on the old "scan" tool from linuxtv-dvb-apps-1.1.0. The differences are:
- no initial tuning data needed, because scanning without this data is exactly what a scan tool like this should do
- it detects automatically which DVB/ATSC card to use
- much more output formats, interfacing to other dtv software.
w_scan2 is a fork of the original w_scan from https://www.gen2vdr.de/wirbel/w_scan/index2.html
main changes from w_scan to w_scan2
-
keep duplicate transponders by default because a stronger transponder with the same ID might have a higher frequency and be discarded simply because it's scanned later. Also don't replace the current transponder with an advertised one by default. The latter may have a lower signal strength. More details here: https://stefantalpalaru.wordpress.com/2016/02/04/scan-all-the-things/ . The old behaviour can be enabled with -d (--delete-duplicate-transponders).
-
re-enable VHF band III in Europe
requirements
- up-to-date(!) DVB kernel headers with DVB API 5.3 support
build
./configure
make
(developers making changes to "configure.ac" and "Makefile.am" also need to run ./autogen.sh)
distro support
Gentoo
eselect repository enable stefantalpalaru
emaint sync --repo stefantalpalaru
emerge w_scan2
Ubuntu
- Ubuntu stable ppa
- Ubuntu git ppa
basic usage
NOTE: Newer versions of w_scan2 need the '-c' option for specifying the country (ATSC, DVB-C and DVB-T) or '-s' for satellite (DVB-S).
DVB-C (using Germany as country, option -c)
./w_scan2 -fc -c DE > channels.conf
DVB-T
./w_scan2 -c DE > channels.conf
DVB-C and DVB-T
./w_scan2 -c DE > channels.conf && ./w_scan2 -fc -c DE > channels.conf
ATSC (terrestrial, using United States as country)
./w_scan2 -fa -c US > channels.conf
US Digital Cable (QAM Annex-B)
./w_scan2 -A2 -c US > channels.conf
ATSC, both terrestrial and digital cable
./w_scan2 -A3 -c US > channels.conf
DVB-S, here: Astra 19.2 east
./w_scan2 -fs -s S19E2
NOTE: see ./w_scan2 -s? for list of satellites.
generate (dvb)scan initial-tuning-data
./w_scan2 -c DE -x > initial_tuning_data.txt
For more sophisticated scan options see ./w_scan2 -h and ./w_scan2 -H.
development
code formatting
We are using clang-format through the wrapper script code_style.sh (make format also works).
Vim integration, using vim-clang-format:
" in your ~/.vimrc
autocmd defgroup BufNewFile,BufRead /path/to/w_scan2/*.{c,h} setlocal shiftwidth=4 softtabstop=4 expandtab
autocmd defgroup BufNewFile,BufRead /path/to/w_scan2/*.{c,h} ClangFormatAutoEnable
Git integration, using a ".git/hooks/pre-commit" with executable permissions:
#!/bin/sh
root="$(git rev-parse --show-toplevel)"
"${root}/code_style.sh" --check
credits
- "wirbel" Winfried Koehler <w_scan AT gmx-topmail DOT de> - the original author
- "e9hack" Hartmut Birr for onid-patch (2006-09-01)
- "seaman" giving his his Airstar2 for testing purposes to me
- "Wicky" for testing with Airstar2/Zarlink MT352 DVB-T
- "kilroy" for testing with Airstar2/Zarlink MT352 DVB-T and Avermedia
- "Fabrizio" for testing with Airstar2/Zarlink MT352 DVB-T
- Arturo Martinez martinez@embl.de for a huge bunch of tests on DVB-S/DVB-S2
- Rolf Ahrenberg for doing DVB-T/T2 tests and suggestions to improve w_scan
- Ștefan Talpalaru stefantalpalaru@yahoo.com - the w_scan2 fork
license
w_scan2 is licensed under GPLv2. See the included file COPYING for details.