OctoPrint : mjpg-streamer 설치

출처

• How to build and run MJPG-Streamer on the Raspberry Pi
• 라즈베리파이 파이카메라 활용강좌 : 웹 스트리밍(Mjpg-Stream)
• fishkingsin/mjpg_streamer.sh

MJPG streamer 컴파일 관련 라이브러리 설치

pi@raspberrypi:~$ sudo apt update
pi@raspberrypi:~$ sudo apt upgrade 
pi@raspberrypi:~$ sudo apt-get install cmake libjpeg9-dev imagemagick libv4l-dev libgphoto2-dev

MJPG streamer 소스 다운로드, 컴파일, 설치

pi@raspberrypi:~$ git clone https://github.com/jacksonliam/mjpg-streamer.git
pi@raspberrypi:~$ cd mjpg-streamer/mjpg-streamer-experimental/
pi@raspberrypi:~/mjpg-streamer/mjpg-streamer-experimental$ make
pi@raspberrypi:~/mjpg-streamer/mjpg-streamer-experimental$ sudo make install

LD_LIBRARY_PATH 경로 추가

pi@raspberrypi:~$ echo "export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:/usr/local/lib:/usr/local/lib/mjpg-streamer" | sudo tee -a /etc/profile

MJPG Streamer 수동 실행

출처 : MJPG Streamer configuration

pi@raspberrypi:~$ mjpg_streamer -i "input_raspicam.so -x 640 -y 480 -fps 10 -rot 180 -ex night" --output "output_http.so -w /usr/local/share/mjpg-streamer/www --port 4998"
MJPG Streamer Version: git rev: 85f89a8c321e799fabb1693c5d133f3fb48ee748
 i: fps.............: 10
 i: resolution........: 640 x 480
 i: camera parameters..............:

Sharpness 0, Contrast 0, Brightness 50
Saturation 0, ISO 0, Video Stabilisation No, Exposure compensation 0
Exposure Mode 'night', AWB Mode 'auto', Image Effect 'none'
Metering Mode 'average', Colour Effect Enabled No with U = 128, V = 128
Rotation 180, hflip No, vflip No
ROI x 0.000000, y 0.000000, w 1.000000 h 1.000000
 o: www-folder-path......: /usr/local/share/mjpg-streamer/www/
 o: HTTP TCP port........: 4998
 o: HTTP Listen Address..: (null)
 o: username:password....: disabled
 o: commands.............: enabled
 i: Starting Camera
Encoder Buffer Size 81920

서비스등록

pi@raspberrypi:~$ sudo vi /etc/init.d/mjpg_streamer

mjpg_streamer 파일 내용

#!/bin/bash
# /etc/init.d/mjpg_streamer.sh
# v0.2 phillips321.co.uk
### BEGIN INIT INFO
# Provides:          mjpg_streamer.sh
# Required-Start:    $network
# Required-Stop:     $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: mjpg_streamer for webcam
# Description:       Streams /dev/video0 to http://IP/?action=stream
### END INIT INFO

#
export width=640
export height=480
export bitrate=10
export SHUTDOWN_WAIT=2

if [ -n "$2" ]; then
  width=$2 
fi

if [ -n "$3" ]; then
  height=$3
fi

if [ -n "$4" ]; then
  bitrate=$4
fi

export LD_MJPG_STREAMER=/usr/local/lib/mjpg-streamer

f_message(){
        echo "[+] $1"
}

mjpg_streamer_pid() {
  echo `ps aux | grep mjpg-streamer | grep -v grep | awk '{ print $2 }'`
}

start() {
  pid=$(mjpg_streamer_pid)
  if [ -n "$pid" ] 
  then
    echo "mjpg_streamer is already running (pid: $pid)"
  else
    # Start mjpg_streamer
		f_message "Starting mjpg_streamer"
		mjpg_streamer -b -i "$LD_MJPG_STREAMER/input_uvc.so -r "$width"x"$height" -f $bitrate -y" -o "$LD_MJPG_STREAMER/output_http.so -p 4998 -w /usr/local/share/mjpg-streamer/www"
		sleep 2
		f_message "mjpg_streamer started"
  fi

  return 0
}

stop() {
  pid=$(mjpg_streamer_pid)
  if [ -n "$pid" ]
  then
    f_message "Stopping mjpg_streamer..."
    kill -9 $pid

    let kwait=$SHUTDOWN_WAIT
    let count=0;
    until [ `ps -p $pid | grep -c $pid` = '0' ] || [ $count -gt $kwait ]
    do
      echo -n -e "\nwaiting for processes to exit";
      sleep 1
      let count=$count+1;
    done

    if [ $count -gt $kwait ]; then
      echo -n -e "\nkilling processes which didn't stop after $SHUTDOWN_WAIT seconds\n"
      kill -9 $pid
    fi
  else
    echo "mjpg_streamer is not running"
  fi
 
  return 0
}

# Carry out specific functions when asked to by the system
case "$1" in
        start)
                 start
                 ;;
        stop)
                 stop
                 ;;
        restart)
                 stop
                 sleep 2
                 start
                 ;;
        resolution)
                resolution=`ps axu | grep mjpg-streamer | grep -v grep | awk '{ print $16 }'`
                if [ -n "$resolution" ];
                then
                        echo "${resolution}"
                else
                        echo "0x0"
                fi
                ;;
        status)
                pid=`ps -A | grep mjpg_streamer | grep -v "grep" | grep -v mjpg_streamer. | awk '{print $1}' | head -n 1`
                if [ -n "$pid" ];
                then
                        f_message "mjpg_streamer is running with pid ${pid}"
                        f_message "mjpg_streamer was started with the following command line"
                        cat /proc/${pid}/cmdline ; echo ""
                else
                        f_message "Could not find mjpg_streamer running"
                fi
                ;;
        *)
                f_message "Usage: $0 {start|stop|status|restart}"
                exit 1
                ;;
esac
exit 0

등록

pi@raspberrypi:~$ sudo chmod u+x /etc/init.d/mjpg_streamer
pi@raspberrypi:~$ sudo update-rc.d mjpg_streamer defaults

서비스 실행 및 실행 확인

pi@raspberrypi:~$ sudo service mjpg_streamer start
pi@raspberrypi:~$ sudo service mjpg_streamer status
● mjpg_streamer.service - LSB: mjpg_streamer for webcam
   Loaded: loaded (/etc/init.d/mjpg_streamer; generated)
   Active: active (running) since Fri 2020-10-02 18:06:59 BST; 16s ago
     Docs: man:systemd-sysv-generator(8)
    Tasks: 3 (limit: 1942)
   CGroup: /system.slice/mjpg_streamer.service
           └─4761 mjpg_streamer -b -i /usr/local/lib/mjpg-streamer/input_uvc.so -r 640x480 -f 10 -y -o /usr/local/lib/mjpg-streamer/output_http.so -p 4998 -w /usr/local/share/mjpg-streamer/www
 
Oct 02 18:06:57 raspberrypi mjpg_streamer[4761]: MJPG-streamer [4761]: TV-Norm...........: DEFAULT
Oct 02 18:06:57 raspberrypi mjpg_streamer[4761]: MJPG-streamer [4761]: www-folder-path......: /usr/local/share/mjpg-streamer/www/
Oct 02 18:06:57 raspberrypi mjpg_streamer[4761]: MJPG-streamer [4761]: HTTP TCP port........: 4998
Oct 02 18:06:57 raspberrypi mjpg_streamer[4761]: MJPG-streamer [4761]: HTTP Listen Address..: (null)
Oct 02 18:06:57 raspberrypi mjpg_streamer[4761]: MJPG-streamer [4761]: username:password....: disabled
Oct 02 18:06:57 raspberrypi mjpg_streamer[4761]: MJPG-streamer [4761]: commands.............: enabled
Oct 02 18:06:57 raspberrypi mjpg_streamer[4761]: MJPG-streamer [4761]: starting input plugin /usr/local/lib/mjpg-streamer/input_uvc.so
Oct 02 18:06:57 raspberrypi mjpg_streamer[4761]: MJPG-streamer [4761]: starting output plugin: /usr/local/lib/mjpg-streamer/output_http.so (ID: 00)
Oct 02 18:06:59 raspberrypi mjpg_streamer[4751]: [+] mjpg_streamer started
Oct 02 18:06:59 raspberrypi systemd[1]: Started LSB: mjpg_streamer for webcam.

확인

GPU 매모리 늘리기

pi@raspberrypi:~ $ sudo raspi-config