sleeptest.sh

#!/bin/sh
# Suspends and Resumes XBMC based on Monitor status
# By Ari Asulin ([email protected])
# */15 * * * * /etc/init.d/sleeptest.sh


if [ $(pidof -x sleeptest.sh| wc -w) -gt 2 ]; then
    echo "Script currently running. Exiting..."
    exit
fi

cmdMonitor="/opt/vc/bin/tvservice -s"   # command to check monitor status
cmdWake="/sbin/initctl start xbmc"      # command to resume xbmc
cmdSleep="/sbin/initctl stop xbmc"      # command to suspend xbmc

evtSleep="HPD low"                      # change this based on the signals your monitor sends
evtWake="HPD high"                      # when turned on and off

sleepDelay=30                           # Waiting period after monitor off. Must be < 60
checkDelay=5                            # 5 Seconds = average of 2.5 second response

echo "Starting XBMC HDMI Monitor..."
echo "  If this hangs with no output, most likely tvservice is broken and you'll need to restart it"

while true; do # Forever loop

        # Get XBMC PID if its running
        PID=`ps -A | grep xbmc.bin | awk '{print $1}'`

        # Check for Monitor Off Signal
        if $cmdMonitor | grep "$evtSleep" > /dev/null; then

                # Monitor is Off, check to see if XBMC is running
                echo "HDMI Monitor is Off"
                if [ $PID ]; then

                        # XBMC is running with monitor off, so wait a bit
                        echo "XBMC is running [$PID]. Waiting $sleepDelay Seconds..."
                        sleep $sleepDelay

                        # Check to see if the monitor is still off
                        if $cmdMonitor | grep "$evtSleep" > /dev/null; then

                                # The monitor didn't come back on, so suspend
                                echo "HDMI Monitor is still off. Suspending XBMC..."
                                $cmdSleep
                        else

                                # Looks like the monitor came back on while we were waiting, so do nothing.
                                echo "HDMI Monitor came back on during waiting period. Doing nothing..."
                        fi
                else

                        # XBMC is not running and the monitor is off, so do nothing.
                        echo "XBMC is not running"
                fi

        # Check for Monitor On Signal
        elif  $cmdMonitor | grep "$evtWake" > /dev/null; then

                # Monitor is On, check to see if XBMC is running
                echo "HDMI Monitor is On"
                if [ $PID ]; then

                        # XBMC is running, so we can exit
                        echo "XBMC is running [$PID]. Exiting..."
                        sleep 60 # We're done, so sleep for a while

                else

                        # XBMC is not running, but the monitor is on, so resume xbmc
                        echo "XBMC is not running. Resuming..."
                        $cmdWake
                        sleep 60 # We're done, so sleep for a while
                fi
        else

                # If you get this status, run tvservice -s with the monitor on and off
                # to figure out what strings to look for
                echo "HDMI Monitor Status Unknown"
        fi

        # If nothing else is going on, sleep
        echo "Sleeping $checkDelay Seconds..."
        sleep $checkDelay
done