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===== servers:vertov:audio =====

==== Scheda audio ====

  cat /proc/asound/cards
  
  0 [Intel          ]: HDA-Intel - HDA Intel
                      HDA Intel at 0xfce10000 irq 44

==== PAM ====

  edit /etc/security/limits.d/audio.conf
  
  @audio   -  rtprio     95
  @audio   -  memlock    unlimited
  
==== User audio ====

Un utente non-amministrativo che appartiene al gruppo audio

  adduser vbe                                                                           
  groupadd audio
  usermod -a -G audio vbe
  
==== Alsa ====

  apt install alsa-utils libasound2 libasound2-plugins

  aplay -l
  
  List of PLAYBACK Hardware Devices
  card 0: Intel [HDA Intel], device 0: Generic Analog [Generic Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

==== Jack ====

  apt install jackd2 alsaplayer-jack jack_capture

  jackd --version

  echo "/usr/bin/jackd -dalsa -r48000 -p1024 -n2 -D -Phw:Intel" > .jackdrc

-d usa alsa\\
-r frequenza/rate, usiamo 48000\\
-p frames/period - proviamo 1024 (tanto buffer meno drops) se no scendiamo a 512 o 256\\
-n periods/buffers (due dovrebbe essere ok, se no 3)\\
-D duplex\\
-P in (la scheda audio in)\\
-C la scheda capture

  vbe@vertov:~$ jack_control status/start/stop

==== Icecast ====

Al momento icecast gira su Zaphoda

i settaggi di collegamento al mountpoint bitume su icecast2:

  user: bitume
  password: nonteladico
  mountpoint: bitume.mp3
  hostname: abbiamoundominio.org
  port: 8000
  
==== Puredata ====

  apt -t buster-backports install puredata pd-unauthorized

puredata connette ad icecast, ma solo usando source [[http://write.flossmanuals.net/pure-data/audio-streaming/|1]], [[https://waterpigs.co.uk/articles/how-to-stream-live-audio-over-the-web-using-icecast2-and-puredata/|2]]

==== Mumble-client-sink-bot ====

Mumble-server (murmur) gira su Zaphoda. Abbiamo bisogno un mumble-client per avere un sink audio in ascolto.

Mumble-client

  apt install mumble
  copia da una conf locale in vbe@vertov:~/.config/Mumble/Mumble.conf
  oppure usare ssh -X
  vbe@vertov:~$ mumble -m mumble://bitume@parla.abbiamoundominio.org -n
  vbe@vertov:~$ xvfb-run mumble -m mumble://bitume@parla.abbiamoundominio.org -n
  
Barnard Mumble-client cline

Suggerito anche da [[https://git.younerd.org/bisco/strummolo/src/branch/master/deploy.sh|Strummolo]], ma Barnard [[https://github.com/layeh/barnard|non è aggiornato]]

==== Mumble-client-music-bot ====

[[https://github.com/azlux/botamusique|botamusique]]

  apt install opus-tools python3 ffmpeg

  uso:
  mettere gli mp3 in vbe@vertov:~/botamusique/musica/
  rm vbe@vertov:~/botamusique/musica.db  (così che non ricordi vecchie canzoni cancellate)
  screen
  vbe@vertov:~$ firejail --noprofile venv/bin/python mumbleBot.py --config configuration.ini #nodownload
  /ls (list song)
  /sl 1 (play song 1 se era muto o mette in coda)
  /v 60 (volume a 60%, che è il default)
  /stop
  
//nota: il file configuration.ini contiene tokens//

==== Azuracast ====

azuracast via docker include icecast, liquidsoap, sftp, web upload e webdj

[[https://docs.azuracast.com/en/getting-started/installation/docker|installazione]]

  apt install curl git apt-transport-https

  mkdir -p /srv/azuracast
  cd /srv/azuracast
  curl -fsSL https://raw.githubusercontent.com/AzuraCast/AzuraCast/master/docker.sh > docker.sh
  chmod a+x docker.sh
  ./docker.sh install

Non installa docker and docker-compose\\
stable e non rolling\\
porte: 80, 443, 2022 per sftp\\
letsencrypt on radio.abbiamoundominio.org (esiste il CNAME)
  
Finire configurazione via web

  ssh vertov.unit -NL 8080:172.17.0.1:80
  http://localhost:8080
 
http://radio.abbiamoundominio.org

il docker-compose.override.yml
                                                                           
    version: '2.2'
      services:  
        web:
          volumes:
            - /srv/azuracast/stations:/var/azuracast/stations
      stations:                                                                               
          volumes:
            - /srv/azuracast/stations:/var/azuracast/stations
            - /srv/azuracast/media/aaa.mp3:/usr/local/share/icecast/web/error.mp3

==== altri software utili AV ===

  apt install darkice lame vorbis-tools festival
    
==== Pymuble ====

Tentativo di sviluppare un client python per mumble che faccia stream su icecast usando libreria pymumble; in fase di test su vm Frankie e' stato creato un container docker chiamato mumble, file di sviluppo nella home di utente unit.

Il settaggio base ha richiesto l'installazione dei seguenti pacchetti su container base python:latest

  apt-get install libopus0
  pip3 install pymumble   // API MUMBLE
  
  apt-get install portaudio19-dev
  pip3 install pyaudio // BINDINGS FOR PORTAUDIO
  
  apt-get install python3-dev libshout3-dev
  pip3 install python-shout  // ICECASThttps://github.com/azlux/pymumble
  
Siti di riferimento:
[[https://github.com/azlux/pymumble|pymumble]]
[[https://github.com/azlux/pymumble/blob/pymumble_py3/API.md|pymumble_api]]
[[https://github.com/azlux/botamusique|bot_music]]

{{tag>[icecast mumble puredata jack bitume]}}