* extra/dvbiscovery: New shell script which allows to guess which network we are on.

extra/dvbiscovery/README

+About DVBiscovery
+=================
+
+DVBiscovery is a shell script that tries to tune a number of frequencies
+(from a config file), and stops after it has found a match. It then dumps
+the output of DVBlast to the standard output, so that an external process
+can parse it and find relevant information there. Typically, you would
+want to get the network ID from the NIT, which unically identifies the
+network you are on.
+
+DVBiscovery is therefore a sort of scanning program, but doesn't aim at
+exhaustivity (there are already programs doing that). It tries to guess
+where you are without any external information.

extra/dvbiscovery/dvbiscovery.sh

+#!/bin/sh
+###############################################################################
+# dvbiscovery.sh
+###############################################################################
+# Copyright (C) 2010 VideoLAN
+# $Id$
+#
+# Authors: Christophe Massiot <massiot@via.ecp.fr>
+#
+# 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+###############################################################################
+
+CONF_BASE="/usr/local/share/dvblast/dvbiscovery-"
+#CONF_BASE="./"
+DVBLAST=dvblast
+LOCK_TIMEOUT=2500
+QUIT_TIMEOUT=15000
+
+usage() {
+	echo "Usage: $0 [-a <adapter #>] [-S <diseqc sat num>] [-c <conf file>]" >&2
+	exit 1
+}
+
+conf_file_passed=""
+adapter=""
+diseqc=""
+
+TEMP=`getopt -o a:S:c: -n "$0" -- "$@"`
+
+if test $? -ne 0; then
+	usage
+fi
+
+eval set -- "$TEMP"
+
+while :; do
+	case "$1" in
+		-a)
+			adapter="-a $2"
+			shift 2
+			;;
+		-c)
+			conf_file_passed=$2
+			shift 2
+			;;
+		-S)
+			diseqc="-S $2"
+			shift 2
+			;;
+		--)
+			shift
+			break
+			;;
+		*)
+			usage
+			;;
+	esac
+done
+
+type=`$DVBLAST $diseqc $adapter -f 0 2>&1 | grep '^debug: Frontend' |  sed 's/^debug: Frontend ".*" type "\(.*\)" supports:$/\1/'`
+tune=""
+conf_file=""
+
+case "$type" in
+	"QPSK (DVB-S/S2)")
+		conf_file="${CONF_BASE}_dvb-s.conf"
+		tune=tune_sat
+		;;
+	"QAM  (DVB-C)")
+		conf_file="${CONF_BASE}_dvb-c.conf"
+		tune=tune_cable
+		;;
+	"OFDM (DVB-T)")
+		conf_file="${CONF_BASE}_dvb-t.conf"
+		tune=tune_dtt
+		;;
+	"ATSC")
+		conf_file="${CONF_BASE}_atsc.conf"
+		tune=tune_atsc
+		;;
+	*)
+		echo "unknown frontend type $type" >&2
+		exit 1
+esac
+
+if test -n "$conf_file_passed"; then
+	conf_file=$conf_file_passed
+fi
+
+if ! test -r "$conf_file"; then
+	echo "unable to open $conf_file" >&2
+	exit 1
+fi
+
+signal_catch() {
+	if test $childpid -ne 0; then
+		kill $childpid
+	fi
+	exit 1
+}
+
+exec_dvblast() {
+	tmp_file=`mktemp`
+
+	$DVBLAST $diseqc $adapter -O $LOCK_TIMEOUT -Q $QUIT_TIMEOUT $opts 2>| $tmp_file &
+	childpid=$!
+	wait $childpid
+	if test $? -eq 0; then
+		cat $tmp_file
+		rm $tmp_file
+		exit 0
+	fi
+
+	childpid=0
+	rm $tmp_file
+}
+
+strtofec() {
+	case "$1" in
+		"NONE") opts="$opts $2 0" ;;
+		"1/2") opts="$opts $2 12" ;;
+		"2/3") opts="$opts $2 23" ;;
+		"3/4") opts="$opts $2 34" ;;
+		"4/5") opts="$opts $2 45" ;;
+		"5/6") opts="$opts $2 56" ;;
+		"6/7") opts="$opts $2 67" ;;
+		"7/8") opts="$opts $2 78" ;;
+		"8/9") opts="$opts $2 89" ;;
+		"AUTO"|*) ;;
+	esac
+}
+
+strtomod() {
+	case "$1" in
+		"QPSK") opts="$opts -m qpsk" ;;
+		"QAM16") opts="$opts -m qam_16" ;;
+		"QAM32") opts="$opts -m qam_32" ;;
+		"QAM64") opts="$opts -m qam_64" ;;
+		"QAM128") opts="$opts -m qam_128" ;;
+		"8VSB") opts="$opts -m vsb_8" ;;
+		"16VSB") opts="$opts -m vsb_16" ;;
+		"AUTO"|*) ;;
+	esac
+}
+
+tune_sat() {
+	childpid=0
+	trap signal_catch 1 2 3 15
+
+	while read sys freq pol srate fec what mod; do
+		opts="-f $freq -s $srate"
+
+		case "$sys" in
+			"S") ;;
+			"S2")
+			case "$mod" in
+					"QPSK") opts="$opts -m qpsk" ;;
+					"8PSK") opts="$opts -m psk_8" ;;
+					*)
+						echo "invalid modulation $mod" >&2
+						;;
+				esac
+				;;
+			*)
+				echo "incompatible file" >&2
+				exit 1
+				;;
+		esac
+
+		strtofec $fec "-F"
+
+		case "$pol" in
+			"V") opts="$opts -v 13" ;;
+			"H") opts="$opts -v 18" ;;
+			*) ;;
+		esac
+
+		exec_dvblast
+	done
+}
+
+tune_cable() {
+	childpid=0
+	trap signal_catch 1 2 3 15
+
+	while read sys freq srate fec mod; do
+		opts="-f $freq -s $srate"
+
+		case "$sys" in
+			"C") ;;
+			*)
+				echo "incompatible file" >&2
+				exit 1
+				;;
+		esac
+
+		strtofec $fec "-F"
+		strtomod $mod
+
+		exec_dvblast
+	done
+}
+
+tune_dtt() {
+	childpid=0
+	trap signal_catch 1 2 3 15
+
+	while read sys freq bw fec fec2 mod mode guard hier; do
+		opts="-f $freq"
+
+		case "$sys" in
+			"T"|"T2") ;;
+			*)
+				echo "incompatible file" >&2
+				exit 1
+				;;
+		esac
+
+		case "$bw" in
+			"8MHz") opts="$opts -b 8" ;;
+			"7MHz") opts="$opts -b 7" ;;
+			"6MHz") opts="$opts -b 6" ;;
+			"AUTO"|*) ;;
+		esac
+
+		strtofec $fec "-F"
+		strtofec $fec2 "-K"
+		strtomod $mod
+
+		case "$mode" in
+			"2k") opts="$opts -X 2" ;;
+			"8k") opts="$opts -X 8" ;;
+			"AUTO"|*) ;;
+		esac
+
+		case "$guard" in
+			"1/32") opts="$opts -G 32" ;;
+			"1/16") opts="$opts -G 16" ;;
+			"1/8") opts="$opts -G 8" ;;
+			"1/4") opts="$opts -G 4" ;;
+			"AUTO"|*) ;;
+		esac
+
+		case "$hier" in
+			"NONE") opts="$opts -H 0" ;;
+			"1") opts="$opts -H 1" ;;
+			"2") opts="$opts -H 2" ;;
+			"4") opts="$opts -H 4" ;;
+			"AUTO"|*) ;;
+		esac
+
+		exec_dvblast
+	done
+}
+
+tune_atsc() {
+	childpid=0
+	trap signal_catch 1 2 3 15
+
+	while read sys freq mod; do
+		opts="-f $freq"
+
+		case "$sys" in
+			"A") ;;
+			*)
+				echo "incompatible file" >&2
+				exit 1
+				;;
+		esac
+
+		strtomod $mod
+
+		exec_dvblast
+	done
+}
+
+childpid=0
+trap signal_catch 1 2 3 15
+
+grep -v "^#" < "$conf_file" 2>/dev/null | $tune &
+childpid=$!
+wait $childpid
+
+exit 100

extra/dvbiscovery/dvbiscovery_atsc.conf

+# US ATSC center frequencies
+A  57028615 8VSB
+A  63028615 8VSB
+A  69028615 8VSB
+A  79028615 8VSB
+A  85028615 8VSB
+A 177028615 8VSB
+A 183028615 8VSB
+A 189028615 8VSB
+A 195028615 8VSB
+A 201028615 8VSB
+A 207028615 8VSB
+A 213028615 8VSB
+A 473028615 8VSB
+A 479028615 8VSB
+A 485028615 8VSB
+A 491028615 8VSB
+A 497028615 8VSB
+A 503028615 8VSB
+A 509028615 8VSB
+A 515028615 8VSB
+A 521028615 8VSB
+A 527028615 8VSB
+A 533028615 8VSB
+A 539028615 8VSB
+A 545028615 8VSB
+A 551028615 8VSB
+A 557028615 8VSB
+A 563028615 8VSB
+A 569028615 8VSB
+A 575028615 8VSB
+A 581028615 8VSB
+A 587028615 8VSB
+A 593028615 8VSB
+A 599028615 8VSB
+A 605028615 8VSB
+A 611028615 8VSB
+A 617028615 8VSB
+A 623028615 8VSB
+A 629028615 8VSB
+A 635028615 8VSB
+A 641028615 8VSB
+A 647028615 8VSB
+A 653028615 8VSB
+A 659028615 8VSB
+A 665028615 8VSB
+A 671028615 8VSB
+A 677028615 8VSB
+A 683028615 8VSB
+A 689028615 8VSB
+A 695028615 8VSB
+A 701028615 8VSB
+A 707028615 8VSB
+A 713028615 8VSB
+A 719028615 8VSB
+A 725028615 8VSB
+A 731028615 8VSB
+A 737028615 8VSB
+A 743028615 8VSB
+A 749028615 8VSB
+A 755028615 8VSB
+A 761028615 8VSB
+A 767028615 8VSB
+A 773028615 8VSB
+A 779028615 8VSB
+A 785028615 8VSB
+A 791028615 8VSB
+A 797028615 8VSB
+A 803028615 8VSB

extra/dvbiscovery/dvbiscovery_dvb-c.conf

+# Gathered from diverse sources
+C 113000000 6900000 NONE AUTO
+C 121000000 6900000 NONE AUTO
+C 123000000 6875000 NONE AUTO
+C 146000000 6900000 NONE AUTO
+C 154000000 6875000 NONE AUTO
+C 154000000 6900000 NONE AUTO
+C 163000000 6875000 NONE AUTO
+C 218000000 6900000 NONE AUTO
+C 241000000 6900000 NONE AUTO
+C 283000000 5900000 NONE AUTO
+C 289500000 6875000 NONE AUTO
+C 306000000 6900000 NONE AUTO
+C 313000000 6875000 NONE AUTO
+C 314000000 6900000 NONE AUTO
+C 330000000 6875000 NONE AUTO
+C 346000000 6875000 NONE AUTO
+C 354000000 6900000 NONE AUTO
+C 354000000 6950000 NONE AUTO
+C 372000000 6875000 NONE AUTO
+C 377750000 6900000 NONE AUTO
+C 386000000 6875000 NONE AUTO
+C 386000000 6900000 NONE AUTO
+C 394000000 6900000 NONE AUTO
+C 410000000 6900000 NONE AUTO
+C 418000000 6900000 NONE AUTO
+C 434000000 6900000 NONE AUTO
+C 442000000 6900000 NONE AUTO
+C 450000000 6875000 NONE AUTO
+C 490000000 6875000 NONE AUTO
+C 514000000 6900000 NONE AUTO
+C 530000000 6900000 NONE AUTO
+C 634000000 6900000 NONE AUTO
+C 714000000 6875000 NONE AUTO

extra/dvbiscovery/dvbiscovery_dvb-s.conf

+# freq pol sr fec
+# Astra 19.2E
+S 12551500 V 22000000 5/6
+# Eurobird 9E
+S 11843000 V 27500000 AUTO
+# Hotbird 13E
+S 11727000 V 27500000 AUTO
+# Astra 23.5E
+S 12565000 V 27500000 AUTO
+# Eurobird 28.5E
+S 11623000 H 27500000 2/3
+# Eutelsat 16.0E & Telecom2 8.0W & Amos 4.0W
+S 10972000 V 27500000 AUTP
+# Sirius 5.0E
+S 11727000 H 27500000 5/6
+# Turksat 42.0E
+S 10970000 V 30000000 5/6
+# Atlantic Bird 1 12.5W
+S 11408000 V 27500000 3/4
+# Atlantic Bird 3 5.0W
+S 11591000 V 20000000 2/3
+# Hispasat 30.0W
+S 12015000 V 27500000 3/4
+# Nilesat 101/102 & Atlantic Bird 7.0W
+S 10719000 V 27500000 3/4
+# Telsat 12 15.0W
+S 11060000 H 19279000 3/4
+# Thor 1.0W
+S 11216000 V 24500000 7/8
+# Express AM1 40.0E
+S 10967000 V 20000000 AUTO
+# Hellas Sat 39.0E
+S 12565000 V 30000000 AUTO
+# Eutelsat W3A 7.0E
+S 11283000 V 27500000 AUTO