a2dp_sink
a2dp-sink
This role makes your machine act as Bluetooth audio sink (over A2DP). Note: All paired devices (i.e. potential audio sources) are automatically trusted. This might have severe security implications. This is realized by a systemd service running btrust. For configuration, read through the role variables documented below.
Requirements
An apt based system like Ubuntu or Debian.
Updating
This role can also update btrust to a desired version.
To do so, just change the btrust source specification and the
a2dp_sink_btrust_version variable accordingly, and then reapply this role.
Role Variables
| Name | Default | Description |
|---|---|---|
| a2dp_sink_btrust_binary_url | undefined | See source specification |
| a2dp_sink_btrust_archive_url | undefined | See source specification |
| a2dp_sink_btrust_github_repo | haslersn/btrust | See source specification |
| a2dp_sink_btrust_checksum | sha256:960b5dcc90714df217e4c68fdfb1f874f36418655599233310c1a5d3e1837009 | Checksum of the downloaded archive or binary |
| a2dp_sink_btrust_version | 0.1.0 | See source specification |
| a2dp_sink_user | a2dp-sink | The user that runs any service installed by this role. |
| a2dp_sink_enable_switch_on_connect | True | Whether to load the PulseAudio module switch-on-connect. |
| a2dp_sink_a2dp_sink_adapter_name | A2DP sink | Name of this Bluetooth device. |
| a2dp_sink_disable_sap_server | True |
Whether to disable the sap server plugin of bluetoothd |
Source Specification
There are multiple ways to specify the source from which btrust should be downloaded. Chosing among them is done by providing exactly one of the following role variables. Actually, multiple of those role variables can be provided, but then only the one listed here first is considered.
btrust_binary_url: Download a precompiled binary from that URL. You should anyway setbtrust_versionto a value that's unique for that version. This is because btrust is only re-downloaded, when thebtrust_versionrole variable changes.btrust_archive_url: Build from source. The source is downloaded as an archive from that URL. The downloaded archive must contain a folder namedbtrust-{{ btrust_version }}which contains in turn the source that can be compiled withcargo build. The compilation yields a binary namedbtrustwhich is then installed.btrust_github_repo: Short form forbtrust_archive_url: https://github.com/{{ btrust_github_repo }}/archive/{{ btrust_version }}.tar.gz.
Example Playbook
The following playbook works if ~/.cache/stuvus exists on the localhost.
- hosts: mpd01
roles:
- role: a2dp-sink
global_cache_dir: "{{ lookup('env', 'HOME') }}/.cache/stuvus"
a2dp_sink_adapter_name: stuvus-BT
a2dp_sink_user: stuvus-mpd
a2dp_sink_btrust_version: 0.1.0
a2dp_sink_btrust_binary_url: https://github.com/haslersn/btrust/releases/download/{{ a2dp_sink_btrust_version }}/btrust-aarch64-unknown-linux-gnu
a2dp_sink_btrust_checksum: sha256:ae3cc2894c98e469644bc64763c4fcaa7a16972fa423c61f44f0fd329b1f9f27