Camera Streaming (Android)

Use a DeviceSession and an attached Camera to receive frames and capture photos through camera.stream.

For PCM audio delivered with this stream, use the audio-streaming skill.

Key concepts

• DeviceSession: Device connection lifecycle created through Wearables.createSession(...)
• Camera: Camera capability attached to a session with session.addCamera(...)
• Stream: Video stream accessed through camera.stream
• StreamConfiguration: Video quality, frame rate, and compression configuration for the stream
• PhotoData: Still image captured from glasses while streaming

Create a session and attach a stream

DeviceSession.start() is fire-and-forget: it returns Unit and the connection completes in the background. A capability can only be added once the session reports DeviceSessionState.STARTED — calling addCamera(...) right after start() fails with DeviceSessionError.SESSION_IDLE. Add the camera from the session-state collector.