aes67discovery
AES67Discovery application help produce SAP announcements for discovery AES67 audio streams.
The application is written in the .Net Core - using .NET Core 3.1
To install it, you'll need to satisfy the following dependencies:
Installing with APT can be done with a few commands. Before you install .NET, run the following commands to add the Microsoft package signing key to your list of trusted keys and add the package repository. Open a terminal and run the following commands:
On Ubuntu 20.04
wget https://packages.microsoft.com/config/ubuntu/20.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
On Ubuntu 18.04
wget https://packages.microsoft.com/config/ubuntu/18.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
sudo dpkg -i packages-microsoft-prod.deb
Install the SDK
.NET Core SDK allows you to develop apps with .NET Core. If you install .NET Core SDK, you don't need to install the corresponding runtime. To install .NET Core SDK, run the following commands:
sudo apt-get update; \
sudo apt-get install -y apt-transport-https && \
sudo apt-get update && \
sudo apt-get install -y dotnet-sdk-3.1
Install the runtime
The .NET Core Runtime allows you to run apps that were made with .NET Core that didn't include the runtime. The commands below install the ASP.NET Core Runtime, which is the most compatible runtime for .NET Core. In your terminal, run the following commands.
sudo apt-get update; \
sudo apt-get install -y apt-transport-https && \
sudo apt-get update && \
sudo apt-get install -y aspnetcore-runtime-3.1
Once you have installed all the dependencies, get the code:
git clone https://github.com/freehand-dev/aes67discovery.git
cd aes67discovery
Then just use:
sudo mkdir /opt/aes67discovery/bin
dotnet restore
dotnet build
sudo dotnet publish --runtime linux-x64 --output /opt/aes67discovery/bin -p:PublishSingleFile=true -p:PublishTrimmed=true ./aes67discovery
Install as daemon
sudo nano /etc/systemd/system/aes67discovery.service
The content of the file will be the following one
[Unit]
Description=AES67 Discovery Server
[Service]
Type=notify
WorkingDirectory=/opt/aes67discovery/etc/aes67discovery
Restart=always
RestartSec=10
KillSignal=SIGINT
ExecStart=/opt/aes67discovery/bin/aes67discovery
Environment=ASPNETCORE_ENVIRONMENT=Production
[Install]
WantedBy=multi-user.target
Add daemon to startup
sudo systemctl daemon-reload
sudo systemctl start aes67discovery
sudo systemctl status aes67discovery
sudo systemctl enable aes67discovery
To start the server, you can use the aes67discovery executable as the application or sudo systemctl start aes67discovery as a daemon. For configuration you can edit a configuration file:
sudo nano /opt/aes67discovery/etc/aes67discovery/aes67discovery.conf
The content of the file will be the following one
[SAP]
Interval=30000
NetInterface="10.10.32.45"
SDPFiles:0="/opt/aes67discovery/etc/sdp/test.sdp"
SDPFiles:1="/opt/aes67discovery/etc/sdp/gstreamer.sdp"
[Logging:LogLevel]
Default=Information
Microsoft=Warning
Create SDP file for stream
v=0
o=- 1 0 IN IP4 10.10.32.45
s=AES67Discovery - AudioTest
i=2 channels: R, L
c=IN IP4 239.69.45.100/32
t=0 0
a=recvonly
m=audio 5004 RTP/AVP 97
a=rtpmap:97 L24/48000/2
a=ptime:1
a=ts-refclk:ptp=IEEE1588-2008:00-1D-C1-FF-FE-0E-49-64:0
a=mediaclk:direct=0
Run audio stream
sudo gst-launch-1.0 -vvv --gst-debug=*udp*:5 -e audiotestsrc ! queue ! audioconvert ! audioresample ! audio/x-raw,channels=2,rate=48000,encoding-name=L24 ! rtpL24pay pt=97 mtu=300 source-info=false ! udpsink host=239.69.45.100 port=5004 auto-multicast=true multicast-iface=eno2 force-ipv4=true ttl=32 qos=true qos-dscp=34
Developed by Oleksandr Nazaruk