14 November 2022
Since version 0.3.59, PipeWire supports LE Audio’s Basic Audio Profile (BAP) for Connected Isochronous Streams (CIS) with the Low Complexity Communication Codec (LC3), see https://www.linkedin.com/posts/collabora_add-bluetooth-le-audio-support-1360-activity-6978014601649037312-7W6d/.
Thanks to the modular architecture of PipeWire, it is ready for future codecs. It supports bi-directional audio and can act as a Central or Peripheral device. In the former case, it allows the end-user to select a new audio profile, while in the latter, it automatically connects Bluetooth audio streams to the local audio input and output. This paves the way for Auracast support in BlueZ and PipeWire.
If you are interested in trying this, the LC3 codec from
https://github.com/google/liblc3.git must be installed. The
PipeWire meson build must be configured with the option -Dbluez5-codec-lc3=enabled.
A security-focused week with two independent vulnerability disclosures: a use-after-free in l2cap_sock_alloc_skb_cb reported by Safa Karakuş, and an SDP OOB heap read via signed/unsigned confusion (CVSS 8.1H, no pairing required).
A landmark week marked by the BlueZ Face-to-Face Meetup announcement (Nice, France, May 30-31) and Bastien Nocera's massive meson build system v9 series (15 patches, 16 messages) proposing a complete build system migration plus HTML documentation generation.
A week dominated by Naga Bhavani Akella's extraordinary Channel Sounding iteration — posting v3 through v10 (8 revisions, 32 messages) of the BlueZ Channel Sounding implementation, making her the most prolific contributor by a wide margin.