bigbluebutton-Github/bigbluebutton-html5/imports/api/users-settings/server
prlanzarin 8feb934169 feat(audio): add experimental transparent listen only mode
This is an initial, experimental implementation of the feature proposed in
https://github.com/bigbluebutton/bigbluebutton/issues/14021.

The intention is to phase out the explicit listen only mode with two
overarching goals:
  - Reduce UX friction and increase familiarity: the existence of a separate
  listen only mode is a source of confusion for the majority of users
  Reduce average server-side CPU usage while also making it possible for
  having full audio-only meetings.

The proof-of-concept works based on the assumption that a "many
concurrent active talkers" scenario is both rare and not useful. With
that in mind, this including two server-side triggers:
 - On microphone inactivity (currently mute action that is sustained for
   4 seconds, configurable): FreeSWITCH channels are held (which translates
   to much lower CPU usage, virtually 0%). Receiving channels are switched,
   server side, to a listening mode (SFU, mediasoup).
   * This required an extension to mediasoup two allow re-assigning producers
     to already established consumers. No re-negotiation is done.
 - On microphone activity (currently unmute action, immediate):
   FreeSWITCH channels are unheld, listening mode is deactivated and the
   mute state is updated accordingly (in this order).

This is *off by default*. It needs to be enabled in two places:
  - `/etc/bigbluebutton/bbb-webrtc-sfu/production.yml` ->
    `transparentListenOnly: true`
  - End users:
    * Server wide: `/etc/bigbluebutton/bbb-html5.yml` ->
      `public.media.transparentListenOnly: true`
    * Per user: `userdata-bbb_transparent_listen_only=true`
2023-08-07 19:43:18 -03:00
..
methods feat(audio): add experimental transparent listen only mode 2023-08-07 19:43:18 -03:00
modifiers Users settings migrated to new async API. 2023-03-20 16:38:56 -03:00
index.js Add users-settings collection and handle dynamic configuration 2018-09-13 15:09:30 -03:00
methods.js Add users-settings collection and handle dynamic configuration 2018-09-13 15:09:30 -03:00
publishers.js Users settings migrated to new async API. 2023-03-20 16:38:56 -03:00