opentpcast-camera

#! /bin/bash
### BEGIN INIT INFO
# Provides:          opentpcast-camera
# Required-Start:    $all
# Required-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:
# Short-Description: Streams on-board or other USB connected camera over HTTP
### END INIT INFO

SERVICE="opentpcast-camera"
PID_PATH="/var/run/"

CAMERA_PORT=8080
CAMERA_RESOLUTION_WIDTH=`egrep -v '(^#|^\s*$|^\s*\t*#)' /boot/opentpcast.txt | grep -oP '(?<=camerareswidth=)([0-9]+)$'`
CAMERA_RESOLUTION_WIDTH=${CAMERA_RESOLUTION_WIDTH:-480}
CAMERA_RESOLUTION_HEIGHT=`egrep -v '(^#|^\s*$|^\s*\t*#)' /boot/opentpcast.txt | grep -oP '(?<=cameraresheight=)([0-9]+)$'`
CAMERA_RESOLUTION_HEIGHT=${CAMERA_RESOLUTION_HEIGHT:-360}
CAMERA_FRAMERATE=`egrep -v '(^#|^\s*$|^\s*\t*#)' /boot/opentpcast.txt | grep -oP '(?<=cameraframerate=)([0-9]+)$'`

start() {
	if [ -e "$PID_PATH/$SERVICE.pid" ] && ps -p $(cat $PID_PATH/$SERVICE.pid) >/dev/null; then
		# Service is already started
		echo "Error! $SERVICE is currently running!" 1>&2
		exit 1
	else
		if [ ! -z "$CAMERA_FRAMERATE" ]; then
			mjpg_streamer -o "output_http.so -p ${CAMERA_PORT}" -i "input_uvc.so -r ${CAMERA_RESOLUTION_WIDTH}x${CAMERA_RESOLUTION_HEIGHT} -f ${CAMERA_FRAMERATE}" & echo $! >$PID_PATH/$SERVICE.pid
		else
			mjpg_streamer -o "output_http.so -p ${CAMERA_PORT}" -i "input_uvc.so -r ${CAMERA_RESOLUTION_WIDTH}x${CAMERA_RESOLUTION_HEIGHT}" & echo $! >$PID_PATH/$SERVICE.pid
		fi
		echo "$SERVICE started"
	fi
}

stop() {
	if [ -e "$PID_PATH/$SERVICE.pid" ]; then
		# Stop running service
		pid=`cat $PID_PATH/$SERVICE.pid`
		kill $pid
		rm "$PID_PATH/$SERVICE.pid"
		echo "$SERVICE stopped ($pid)"
	else
		# Service is not started
		echo "Error! $SERVICE not started!" 1>&2
		exit 1
	fi
}

if [ "$(id -u)" != "0" ]; then
	echo "This script must be run as root" 1>&2
	exit 1
fi

case "$1" in
	start)
		start
		exit 0
	;;
	stop)
		stop
		exit 0
	;;
	restart|reload|force-reload)
		stop
		start
		exit 0
	;;
	*)
		echo "Usage $SERVICE {start|stop|restart|reload}" 1>&2
		exit 1
	;;
esac

exit 0