#PulseAudio Loopback

The goal behind this switch is to allow a very flexible whole home audio system based upon PulseAudio.

For example, for a system with a 7.1 surround sound card, and 3 instances of MPD running, it is possible to quickly route the output of any MPD instance to any of the 8 possible (4 stereo) channels on the sound card, by loading/unloading a loopback module. This loading/unloading functionality is provided by this integration. When the switch is on, the loopback module is loaded. When the switch is off, the module is not loaded.

The benefit of this approach is that this audio routing can occur without modifying the design-time configuration of MPD or PulseAudio.

This integration uses a TCP connection to control a local or remote PulseAudio server. So there are no local dependencies.

To enable this switch, add the following lines to your "configuration.yaml" file. :::tip 更改配置后需要重启 Home Assistant。 :::

# Example configuration.yaml entry
switch:
  - platform: pulseaudio_loopback

sink_name:
  description: The name of the Pulseaudio sink that will receive the audio.
  required: true
  type: string
source_name:
  description: The name of the Pulseaudio source that will supply the audio.
  required: true
  type: string
name:
  description: Name of the switch.
  required: false
  default: paloopback
  type: string
host:
  description: The IP address or host name of the PulseAudio server.
  required: false
  default: Use client configuration in /etc/pulse
  type: string
port:
  description: The port that Pulseaudio is listening on.
  required: false
  default: 4713
  type: integer

:::important This integration relies on raw TCP commands to PulseAudio. In order for PulseAudio to accept commands with this integration, module-native-protocol-tcp auth-ip-acl=<homeassistant ip> must be loaded on the PulseAudio server.

:::