Ṣiṣan iboju si awọn ẹrọ pupọ lori nẹtiwọki

Mo nilo lati ṣafihan dasibodu pẹlu ibojuwo lori ọpọlọpọ awọn iboju ni ọfiisi. A ni ọpọlọpọ atijọ Rasipibẹri Pi awoṣe B+ ati hypervisor pẹlu ohun elo ailopin ti o fẹrẹẹ.

Nkqwe Rasipibẹri Pi Awoṣe B + ko ni aileto ti o to lati jẹ ki ẹrọ aṣawakiri ṣiṣẹ nigbagbogbo ati mu iye nla ti awọn eya aworan wa ninu rẹ, eyiti o jẹ idi ti o ṣẹlẹ pe oju-iwe naa jẹ didan ni apakan ati nigbagbogbo ipadanu.

Mo rii ojutu ti o rọrun ati didara, eyiti Mo fẹ pin pẹlu rẹ.

Bi o ṣe mọ, gbogbo awọn Raspberries ni ero isise fidio ti o lagbara ti o lagbara, eyiti o dara julọ fun iyipada fidio ohun elo. Nitorinaa ero naa wa lati ṣe ifilọlẹ ẹrọ aṣawakiri kan pẹlu dasibodu kan ni ibomiiran, ati gbe ṣiṣan ti a ti ṣetan pẹlu aworan ti a ṣe si rasipibẹri naa.

Pẹlupẹlu, eyi yẹ ki o ni iṣakoso irọrun, nitori ninu ọran yii gbogbo iṣeto yoo ṣee ṣe lori ẹrọ foju kan, eyiti yoo rọrun lati ṣe imudojuiwọn ati afẹyinti.

Ki a to Wi ki a to so.

Abala olupin

A yoo lo awọn setan Aworan awọsanma fun Ubuntu. Laisi fifi sori ẹrọ ti o nilo, o ni ohun gbogbo ti o nilo lati mu ẹrọ foju kan ni kiakia, ati Awọsanma-Init atilẹyin ṣe iranlọwọ lati ṣeto nẹtiwọọki kan lẹsẹkẹsẹ, ṣafikun awọn bọtini ssh ati fi sii ni iyara si iṣẹ.

A ran ẹrọ foju tuntun kan ati akọkọ ti gbogbo fi sii lori rẹ Xorg, nodm и apoti ṣiṣan:

apt-get update
apt-get install -y xserver-xorg nodm fluxbox
sed -i 's/^NODM_USER=.*/NODM_USER=ubuntu/' /etc/default/nodm

A yoo tun lo atunto fun Xorg, inu rere funni us Diego Ongaro, fifi nikan titun kan ipinnu 1920 × 1080, niwon gbogbo awọn diigi wa yoo lo:

cat > /etc/X11/xorg.conf <<EOT
Section "Device"
    Identifier      "device"
    Driver          "vesa"
EndSection

Section "Screen"
    Identifier      "screen"
    Device          "device"
    Monitor         "monitor"
    DefaultDepth    16
    SubSection "Display"
        Modes       "1920x1080" "1280x1024" "1024x768" "800x600"
    EndSubSection
EndSection

Section "Monitor"
    Identifier      "monitor"
    HorizSync       20.0 - 50.0
    VertRefresh     40.0 - 80.0
    Option          "DPMS"
EndSection

Section "ServerLayout"
    Identifier      "layout"
    Screen          "screen"
EndSection
EOT

systemctl restart nodm

Bayi a yoo fi Firefox sori ẹrọ, a yoo ṣiṣẹ bi iṣẹ eto, nitorinaa jẹ ki a kọ faili ẹyọkan fun ni ọna kan:

apt-get install -y firefox xdotool

cat > /etc/systemd/system/firefox.service <<EOT
[Unit]
Description=Firefox
After=network.target

[Service]
Restart=always
User=ubuntu
Environment="DISPLAY=:0"
Environment="XAUTHORITY=/home/ubuntu/.Xauthority"
ExecStart=/usr/bin/firefox -url 'http://example.org/mydashboard'
ExecStartPost=/usr/bin/xdotool search --sync --onlyvisible --class "Firefox" windowactivate key F11

[Install]
WantedBy=graphical.target
EOT

systemctl enable firefox
systemctl start firefox

A nilo Xdotool lati le ṣe ifilọlẹ Firefox lẹsẹkẹsẹ ni ipo iboju kikun.
Lilo paramita -url O le pato oju-iwe eyikeyi ki o ṣii laifọwọyi nigbati ẹrọ aṣawakiri ba bẹrẹ.

Ni ipele yii, kiosk wa ti ṣetan, ṣugbọn ni bayi a nilo lati okeere aworan lori nẹtiwọọki si awọn diigi ati awọn ẹrọ miiran. Lati ṣe eyi a yoo lo awọn anfani Išipopada JPEG, ọna kika ti a lo nigbagbogbo fun ṣiṣan fidio lati ọpọlọpọ awọn kamẹra wẹẹbu.

Lati ṣe eyi a nilo awọn nkan meji: FFmpeg pẹlu module x11 gba, lati ya awọn aworan lati X ati ṣiṣan Oju, ta ni yoo pin si awọn onibara wa:

apt-get install -y make gcc ffmpeg 

cd /tmp/
wget https://github.com/ccrisan/streameye/archive/master.tar.gz
tar xvf master.tar.gz 
cd streameye-master/
make
make install

cat > /etc/systemd/system/streameye.service <<EOT
[Unit]
Description=streamEye
After=network.target

[Service]
Restart=always
User=ubuntu
Environment="DISPLAY=:0"
Environment="XAUTHORITY=/home/ubuntu/.Xauthority"
ExecStart=/bin/sh -c 'ffmpeg -f x11grab -s 1920x1080 -i :0 -r 1 -f mjpeg -q:v 5 - 2>/dev/null | streameye'

[Install]
WantedBy=graphical.target
EOT

systemctl enable streameye
systemctl start streameye

Niwọn bi aworan wa ko nilo imudojuiwọn ni iyara, Mo ṣalaye oṣuwọn isọdọtun: 1 fireemu fun iṣẹju kan (paramita -r 1) ati didara funmorawon: 5 (paramita -q:v 5)

Bayi jẹ ki a gbiyanju lati lọ si http://your-vm:8080/, ni idahun iwọ yoo rii sikirinifoto imudojuiwọn nigbagbogbo ti tabili tabili rẹ. Nla! - ohun ti a nilo niyẹn.

Apa onibara

Nibi ohun gbogbo paapaa rọrun, bi Mo ti sọ tẹlẹ, a yoo lo Rasipibẹri Pi Awoṣe B +.

Ni akọkọ, jẹ ki a fi sori ẹrọ lori rẹ ArchLinux ARM, fun eyi a tẹle awọn ilana lori aaye osise.

A yoo tun nilo lati pin iranti diẹ sii fun chirún fidio wa, fun eyi a yoo ṣatunkọ ni /boot/config.txt

gpu_mem=128

Jẹ ki a bata eto tuntun wa ati, ni iranti lati bẹrẹ bọtini pacman, fi sori ẹrọ OMXPlayer:

pacman -Sy omxplayer

Ohun ti o ṣe akiyesi ni pe OMXPlayer le ṣiṣẹ laisi X, nitorinaa gbogbo ohun ti a nilo ni lati kọ faili ẹyọkan fun rẹ ati ṣiṣe:

cat > /etc/systemd/system/omxplayer.service <<EOT
[Unit]
Description=OMXPlayer
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
Restart=always
ExecStart=/usr/bin/omxplayer -r --live -b http://your-vm:8080/ --aspect-mode full

[Install]
WantedBy=multi-user.target
EOT

systemctl enable omxplayer
systemctl start omxplayer

Bi paramita -b http://your-vm:8080/ a n kọja URL lati olupin wa.

Iyẹn ni gbogbo rẹ, aworan lati ọdọ olupin wa yẹ ki o han lẹsẹkẹsẹ loju iboju ti a ti sopọ. Ti awọn iṣoro eyikeyi ba waye, ṣiṣan naa yoo tun bẹrẹ laifọwọyi ati awọn alabara yoo tun sopọ mọ rẹ.

Gẹgẹbi ajeseku, o le fi aworan abajade sori ẹrọ bi iboju iboju lori gbogbo awọn kọnputa ni ọfiisi. Fun eyi iwọ yoo nilo MPV и XScreenIpamọ:

mode:  one
selected: 0
programs:              
     "Monitoring Screen"  mpv --really-quiet --no-audio --fs       
      --loop=inf --no-stop-screensaver       
      --wid=$XSCREENSAVER_WINDOW        
      http://your-vm:8080/      n
    maze -root        n
    electricsheep --root 1       n

Bayi awọn ẹlẹgbẹ rẹ yoo dun pupọ :)

orisun: www.habr.com