PlatformAudio

[stephen-derosa]

Overview

Implement PlatformAudio over ffi

Examples

https://github.com/livekit-examples/cpp-example-collection/compare/sderosa/BOT-377-platform-audio?expand=1

[Copilot]

Pull request overview

This PR introduces a new PlatformAudio API to expose WebRTC platform audio (ADM-backed capture/playout with voice processing) through the C++ SDK’s FFI layer, and wires it into LocalAudioTrack creation, with docs and unit coverage.

Changes:

• Add public PlatformAudio / PlatformAudioSource API and FFI-backed implementation.
• Add LocalAudioTrack::createLocalAudioTrack overload for PlatformAudioSource.
• Add README documentation and new unit tests for platform audio behavior.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/tests/unit/test_platform_audio.cpp	Adds unit tests covering default options, device info fields, and creating a track from a platform source.
src/platform_audio.cpp	Implements PlatformAudio and PlatformAudioSource over synchronous FFI requests.
src/local_audio_track.cpp	Adds shared helper for track creation and an overload accepting PlatformAudioSource.
README.md	Documents recommended usage of PlatformAudio vs AudioSource, with a C++ example.
include/livekit/platform_audio.h	Adds the public PlatformAudio API surface, options, device info, and error type with Doxygen docs.
include/livekit/local_audio_track.h	Adds forward declaration + new overload and expands/updates Doxygen docs.
include/livekit/livekit.h	Exposes platform_audio.h from the umbrella header.
CMakeLists.txt	Adds src/platform_audio.cpp to the shared library build.
AGENTS.md	Updates threading-model docs and adds PlatformAudio to the thread-safety table.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[xianshijing-lk]

one question, it looks pretty good from a quick look.