CubieBoard 上安裝MJPG-Streamer 記錄
環境準備 (Login as root)
安裝開發工具
apt-get install gcc autoconf make
安裝必要套件
apt-get install subversion libjpeg8-dev imagemagick
安裝其他套件(非必要), such as lsusb
apt-get install usbutils
編譯 MJPG-Streamer
下載MJPG-Streamer souce code
cd ~
svn checkout http://svn.code.sf.net/p/mjpg-streamer/code/ mjpg-streamer-code
cd ~/mjpg-streamer-code/mjpg-streamer
make
#
# Assume you want to install the mjpg-streamer in /mjpg-streamer directory
#
mkdir -p /mjpg-streamer/bin
mkdir -p /mjpg-streamer/lib
mkdir -p /mjpg-streamer/www
make DESTDIR=/mjpg-streamer install
測試
插入支援UVC 的USB webcam, 使用lsusb 查看裝置
root@bsms:~/# lsusb
Bus 004 Device 002: ID 045e:0779 Microsoft Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
其中 Bus 004 Device 002: ID 045e:0779 Microsoft Corp 即是我的USB webcam.
而且在/dev 目錄下, 應該會產生一個video0 的裝置
root@bsms:~/# ls -al /dev/video?
crw-rw---T 1 root video 81, 0 10月 21 13:02 /dev/video0
執行mjpg-streamer
/mjpg-streamer/bin/mjpg_streamer -i "/mjpg-streamer/lib/input_uvc.so" -o "/mjpg-streamer/lib/output_http.so -w /mjpg-streamer/www"
然後使用Browser 連接 http://your_cubieboar_ip:8080 即可看到畫面
詳細執行指令參數可以參考source code 目錄中 start.sh
less ~/mjpg-streamer-code/mjpg-streamer/start.sh
開機自動執行
建立script setting file /etc/default/mjpg-streamer
root@bsms:~/# vi /etc/default/mjpg-streamer
# Configuration for /etc/init.d/mjpg-streamer
# The init.d script will only run if this variable non-empty.
MJPG_STREAMER_USER="root"
# Where mjpg-streamer is installed, this is important!
DAEMON_HOME=/mjpg-streamer
DAEMON_EXEC_DIR=$DAEMON_HOME/bin
DAEMON_LIB_DIR=$DAEMON_HOME/lib
DAEMON_WEB_DIR=$DAEMON_HOME/www
# What arguments to pass to mjpg-streamer, here is few examples; You can change them by commenting one and
# uncommenting another:
DAEMON_I_ARGS="$DAEMON_LIB_DIR/input_uvc.so -r 1280x720 -f 15" # UVC-mode
#DAEMON_I_ARGS="$DAEMON_LIB_DIR/input_uvc.so -y -r 1280x720 -f 15" # YUV-mode
DAEMON_O_ARGS="$DAEMON_LIB_DIR/output_http.so -w $DAEMON_WEB_DIR -c your_account:your_passowrd"
# Umask of files mjpg-streamer generates, Change this to 000 if running mjpg-streamer as its own, separate user
UMASK=022
# Should we run at startup?
RUN_AT_STARTUP="YES"
將檔案中的your_account:your_password 改成你想要的帳密
並且修改檔案屬性為600
root@bsms:~/# chmod 600 /etc/default/mjpg-streamer
建立init script file /etc/init.d/mjpg-streamer
root@bsms:~/# vi /etc/init.d/mjpg-streamer
#!/bin/sh
### BEGIN INIT INFO
# Provides: mjpg-streamer
# Required-Start: $local_fs networking
# Required-Stop:
# Should-Start:
# Should-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: mjpg-streamer daemon
# Description: Starts the mjpg-streamer daemon with the user specified in
# /etc/default/mjpg-streamer.
### END INIT INFO
# Author: Sami Olmari
# Modified: Hao Tseng
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DESC="mjpg-streamer Daemon"
NAME="mjpg-streamer"
DAEMON=mjpg_streamer
PIDFILE=/var/run/${NAME}.pid
PKGNAME=mjpg-streamer
SCRIPTNAME=/etc/init.d/$PKGNAME
# Read configuration variable file if it is present
[ -r /etc/default/$PKGNAME ] && . /etc/default/$PKGNAME
# Exit if the mjpg-streamer is not installed
[ -x "$DAEMON_EXEC_DIR/$DAEMON" ] || exit 0
# Load the VERBOSE setting and other rcS variables
[ -f /etc/default/rcS ] && . /etc/default/rcS
# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions
if [ -z "$RUN_AT_STARTUP" -o "$RUN_AT_STARTUP" != "YES" ]; then
log_warning_msg "Not starting $PKGNAME, edit /etc/default/$PKGNAME to start it."
exit 0
fi
if [ -z "$MJPG_STREAMER_USER" ]; then
log_warning_msg "Not starting $PKGNAME, MJPG_STREAMER_USER not set in /etc/default/$PKGNAME."
exit 0
fi
#
# Function to verify if a pid is alive
#
is_alive()
{
pid=`cat $1` > /dev/null 2>&1
kill -0 $pid > /dev/null 2>&1
return $?
}
#
# Function that starts the daemon/service
#
do_start()
{
# Return
# 0 if daemon has been started
# 1 if daemon was already running
# 2 if daemon could not be started
is_alive $PIDFILE
RETVAL="$?"
if [ $RETVAL != 0 ]; then
start-stop-daemon --start --background --quiet --pidfile $PIDFILE --make-pidfile \
--exec $DAEMON_EXEC_DIR/$DAEMON --chuid $MJPG_STREAMER_USER --user $MJPG_STREAMER_USER --umask $UMASK -- -i "$DAEMON_I_ARGS" -o "$DAEMON_O_ARGS"
RETVAL="$?"
fi
}
#
# Function that stops the daemon/service
#
do_stop()
{
# Return
# 0 if daemon has been stopped
# 1 if daemon was already stopped
# 2 if daemon could not be stopped
# other if a failure occurred
start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --user $MJPG_STREAMER_USER --pidfile $PIDFILE
RETVAL="$?"
[ "$RETVAL" = "2" ] && return 2
rm -f $PIDFILE
[ "$RETVAL" = "0" ] && return 0 || return 1
}
case "$1" in
start)
[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
do_start
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
stop)
[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
do_stop
case "$?" in
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
restart)
log_daemon_msg "Restarting $DESC" "$NAME"
do_stop
case "$?" in
0|1)
do_start
case "$?" in
0) log_end_msg 0 ;;
1) log_end_msg 1 ;; # Old process is still running
*) log_end_msg 1 ;; # Failed to start
esac
;;
*)
# Failed to stop
log_end_msg 1
;;
esac
;;
status)
status_of_proc -p ${PIDFILE} $DAEMON_EXEC_DIR/$DAEMON $DAEMON && exit 0 || exit $?;
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|restart|status}" >&2
exit 3
;;
esac
:
修改檔案屬性為755
root@bsms:~/# chmod 755 /etc/init.d/mjpg-streamer
將/etc/init.d/mjpg-streamer 設成開機時執行
root@bsms:~/# update-rc.d mjpg-streamer defaults
使用下列指令測試
root@bsms:~/# /etc/init.d/mjpg-streamer start
[ ok ] Starting mjpg-streamer Daemon: mjpg-streamer.
已知問題
- 不知為何每次開機執行時, mjpg-streamer 啟動後, 網頁連的進去, 但是卻看不到畫面. 只要手動關掉deamon 再啟動即可.
- 長時間使用後, 有時camera 畫面會出不來, 但是網頁是ok的.
基於以上兩點, 所以我只好用crontab 來定時restart 這個deamon.
root@bsms:~/# crontab -l
*/10 * * * * /etc/init.d/mjpg-streamer restart
每10分鐘自動重起daemon