anselmobattisti

Pipeline to send video (simulating SRC) get the data from video0
gst-launch-1.0 v4l2src device=/dev/video0 \
    ! decodebin \
    ! x264enc \
    ! rtph264pay \
    ! udpsink host=localhost port=5000

// if you are running it inside a docker container be aware of the host ip in udpsink
gst-launch-1.0 v4l2src device=/dev/video0 \
    ! decodebin \

anselmobattisti

# To run the latexdiff in a Docker environment 
# 1 - Download the image
docker pull iphoneintosh/latex-docker:latest

# 2 - Run the latexdiff
docker run --rm -v .:/data iphoneintosh/latex-docker:latest latexdiff original.tex rev.tex > diff.tex

anselmobattisti

gst-launch-1.0 \
    videomixer name=m sink_1::xpos=50 sink_1::ypos=50 sink_2::xpos=400 sink_2::ypos=50  \
    ! x264enc \
    ! rtph264pay \
    ! udpsink host=localhost port=5000 \
    videotestsrc pattern=white \
    ! video/x-raw, format=I420, framerate=5/1, width=740, height=480 \
    ! m. \
    videotestsrc pattern=red \
    ! videobox left=100 \

anselmobattisti

# --wrap=0  will convert the base64 texto into only one line

curl -X POST -H "Content-Type: application/json" -d '{"image" : "'"$( base64 --wrap=0 ./imgs/knative.png)"'"}' http://127.0.0.1:8080

anselmobattisti

from collections import OrderedDict

msg = ""

positions = OrderedDict([
    ("Start_Bit", 2),
    ("Packet_Length", 1),
    ("Protocol_Number", 1),
    ("Location_Source_Type", 1),
    ("Terminal_ID", 8),

anselmobattisti

#!/usr/bin/python

from mininet.net import Mininet
from mininet.node import Controller, RemoteController, OVSController
from mininet.node import CPULimitedHost, Host, Node
from mininet.node import OVSKernelSwitch, UserSwitch
from mininet.cli import CLI
from mininet.log import setLogLevel, info
from mininet.link import TCLink, Intf, OVSLink
from subprocess import call

anselmobattisti

# How to adjust brightness for HD Pro Webcam C920  on ubuntu 20.04
# 
# Install the v4l2-ctl
apt-get install v4l2-ctl

# list the decives
v4l2-ctl --list-devices

###
HD Pro Webcam C920 (usb-0000:00:14.0-1.2):

anselmobattisti

# Aumentar o tamanho do disco 

virt-filesystems --long -h --all -a olddisk.qcow2

qemu-img create -f qcow2 -o preallocation=metadata newdisk.qcow2 50G

# /dev/sda3 é o nome da partição do disco antigo que vai ser alterado
virt-resize --expand /dev/sda3 olddisk newdisk.qcow2

# os dados são copiados para o disco novo, mova o disco novo sobre o antigo 

anselmobattisti

@article{mijumbi_network_2016,
	title = {Network function virtualization: {State}-of-the-art and research challenges},
	volume = {18},
	issn = {1553877X},
	doi = {10.1109/COMST.2015.2477041},
	number = {1},
	journal = {IEEE Communications Surveys and Tutorials},
	author = {Mijumbi, Rashid and Serrat, Joan and Gorricho, Juan Luis and Bouten, Niels and De Turck, Filip and Boutaba, Raouf},
	year = {2016},

anselmobattisti

Capture and send video 

gst-launch-1.0  v4l2src device=/dev/video0 \
    ! decodebin \
    ! x264enc \
    ! rtph264pay \
    ! udpsink port=5000

Show the video
gst-launch-1.0 \