The added features within the attached patch:
1) Show current channel for each attached pvrusb2 device. (ie.
change-channel.sh c)
2) Increment or decrement current channel for each pvrusb2 device. (ie.
change-channel.sh + or -)
Modifications:
1) I've also provided more detailed when -h is used.
2) Some other minor syntax corrections were made while trying to
preserve original code & syntax. (Unless somebody knows of a good
sh/bash style checker???)
Seems to be well tested by me. Just hope the changes held up after
using diff. (Sigh, the missed miracles of SVN! ;-)
--
Roger
http://www.eskimo.com/~roger/index.html
Key fingerprint = 8977 A252 2623 F567 70CD 1261 640F C963 1005 1D61
Thu Nov 8 14:23:35 AKST 2007
--- change-channel.sh.orig 2007-11-04 12:50:45.000000000 -0900
+++ change-channel.sh 2007-11-08 14:18:29.000000000 -0900
@@ -1,6 +1,6 @@
#!/bin/sh
-# $Id: change-channel.sh 1690 2007-11-04 21:50:45Z isely $
+# $Id: change-channel.sh 603 2005-09-22 02:47:18Z isely $
# This sysfs based channel changing script was contributed on
# 10-Sep-2005 by Per Christian Henden <[EMAIL PROTECTED]>. Please see
@@ -8,7 +8,6 @@
# script. The text of his e-mail describing this script is pasted
# below:
-#
# Hi,
#
# I made a script for changing channels (attached).
@@ -41,41 +40,150 @@
# script, so make sure you change that to point to your frequency file.
#
# -PER
-#
+# 2007.11.06 Roger <[EMAIL PROTECTED]>
+# Added show current channel, channel increment, channel decrement
+# ie. "change-channel.sh +" or "change-channel.sh -"
+# Some duplicate code is present and could be modified into functions
+# However, "mplayer tv://" is on the horizon and this script could be
+# soon deprecated! :-)
#set -x #debug
-FREQUENCY_FILE="/home/perchrh/.tv/freqs"
+#FREQUENCY_FILE=""
+FREQUENCY_FILE="/home/roger/.tv/freqs"
CHANNELID=$1
-#check first if we are root
+# Check first if we are root
if [ $UID != "0" ]
- then
+then
echo "You need to be root to change channels"
exit
fi
-#check parameters
-if [ $# == "0" ]
+# Check for existing config file
+if [ -a $HOME/.tv/freqs ]
+then
+ FREQUENCY_FILE=$HOME/.tv/freqs
+
+else if [[ $FREQUENCY_FILE = "" ]]
+then
+ echo "No Frequency File Specified"
+ echo
+ echo "You need one of Xawtv's \"*.list\" files, according to your broadcast,"
+ echo "copied and renamed to $HOME/.tv/freqs file"
+ echo
+ exit
+fi
+fi
+
+# Check parameters
+if [ $# == "0" ] || [ $1 == "-h" ]
then
- echo "Usage is $0 \<channel id\>"
- echo "e.g. $0 S10"
- echo "Use $0 -list to get a list of available channels"
+ echo "Usage: $0 [CHANNEL ID]"
+ echo
+ echo " + Increment current channel by +1"
+ echo " - Decrement current channel by -1"
+ echo " c Show current channel"
+ echo
+ echo " -h This help screen"
+ echo " -list List of available channels"
+ echo
+ echo "Examples:"
+ echo
+ echo " Change to channel S10"
+ echo
+ echo " # $0 S10"
+ echo
+ echo " Increment channel by +1"
+ echo
+ echo " # $0 +"
+ echo
exit
-else if [ $1 == "-list" ]
+fi
+
+# List Available Channels
+if [ $1 == "-list" ]
then
echo "Available channels are:"
grep "\[" $FREQUENCY_FILE|tr -d "[,]"
exit
fi
+
+# Show Current Channel
+if [ $1 == "c" ]
+then
+ if [ -x /sys/class/pvrusb2/ ]
+ then
+ # find current frequency on each pvrusb2 device
+ ids=`find /sys/class/pvrusb2/ -maxdepth 1 -mindepth 1 -type d`
+ for id in $ids
+ do
+ current_freq=`cat $ids/ctl_frequency/cur_val`
+
+ # adjust frequency for association with xawtv frequencies
+ current_freq=$(( $current_freq/1000 ))
+
+ # associate freq with a channel
+ CHANNELID=`grep -1 -i "$current_freq" $FREQUENCY_FILE |head -n 1 |tr -d "[]"`
+ echo "Current Channel $CHANNELID ($id)"
+ done
+ fi
+ echo
+ exit
+fi
+
+# Increment Channel
+if [ $1 == "+" ]
+then
+ if [ -x /sys/class/pvrusb2/ ]
+ then
+ # find current frequency on each pvrusb2 device
+ ids=`find /sys/class/pvrusb2/ -maxdepth 1 -mindepth 1 -type d`
+ for id in $ids
+ do
+ current_freq=`cat $ids/ctl_frequency/cur_val`
+
+ # adjust frequency for association with xawtv frequencies
+ current_freq=$(( $current_freq/1000 ))
+
+ # associate freq with a channel and increment channel
+ CHANNELID=`grep -1 -i "$current_freq" $FREQUENCY_FILE |head -n 1 |tr -d "[]"`
+ CHANNELID=$(( $CHANNELID+1 ))
+ done
+ else
+ echo "PVR USB2 sysfs interface not found"
+ fi
fi
+# Decrement Channel
+if [ $1 == "-" ]
+then
+ if [ -x /sys/class/pvrusb2/ ]
+ then
+ # find current frequency on each pvrusb2 device
+ ids=`find /sys/class/pvrusb2/ -maxdepth 1 -mindepth 1 -type d`
+ for id in $ids
+ do
+ current_freq=`cat $ids/ctl_frequency/cur_val`
+
+ # adjust frequency for association with xawtv frequencies
+ current_freq=$(( $current_freq/1000 ))
+
+ # associate freq with a channel and decrement channel
+ CHANNELID=`grep -1 -i "$current_freq" $FREQUENCY_FILE |head -n 1 |tr -d "[]"`
+ CHANNELID=$(( $CHANNELID-1 ))
+ done
+ else
+ echo "PVR USB2 sysfs interface not found"
+ fi
+fi
+# Change to Specified Channel
freq=`grep -1 -i "\[$CHANNELID\]" $FREQUENCY_FILE |tail -n 1|cut -d" " -f 3|tr -d " "`000
-#check if we got an empty string returned from grep,
-#that means the channel id was not found
+# check if we got an empty string returned from grep.
+# this means the Channel ID was not found.
if [ $freq == "000" ]
then
echo "Could not find channel with id $CHANNELID"
@@ -84,7 +192,7 @@
echo "Found frequency $freq for channel $CHANNELID"
fi
-#Change the channel for all pvrusb2 cards to that of $freq
+# change the channel for all pvrusb2 cards to that of $freq
if [ -x /sys/class/pvrusb2/ ]
then
ids=`find /sys/class/pvrusb2/ -maxdepth 1 -mindepth 1 -type d`
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