M6 (AudioRoomBroadcaster): Inverse of AudioRoomPlayer. Pulls PCM frames
from an AudioCapture, runs them through an OpusEncoder, and pushes the
resulting Opus packets into a MoqSession.TrackPublisher as
OBJECT_DATAGRAMs. setMuted keeps the capture + encoder running so unmute
is sample-accurate; encode failures are reported via onError but don't
tear the loop down.
M7 (NestsSpeaker): Mirror of NestsListener for the host / speaker path.
- `NestsSpeaker.startBroadcasting()` — sends ANNOUNCE for the room's
namespace (`["nests", roomId]`), opens a TrackPublisher named after
this user's pubkey hex, wires an AudioRoomBroadcaster onto it.
- `BroadcastHandle.setMuted` / `close()` — speaker-side equivalents of
the listener's mute / disconnect controls.
- `NestsSpeakerState` sealed hierarchy (Idle / Connecting{step} /
Connected / Broadcasting{isMuted} / Failed / Closed).
- `connectNestsSpeaker` orchestration mirrors `connectNestsListener`
end-to-end (HTTP → WebTransport → MoQ setup), then returns a
`DefaultNestsSpeaker` ready for `startBroadcasting`.
Tests:
- AudioRoomBroadcasterTest (5 tests): pcm-flow ordering, mute behavior,
encoder warmup skip, encode-error tolerance, idempotent stop.
- NestsSpeakerTest (2 tests): start/mute/close state transitions,
double-start rejection.
Bug caught + fixed during M7 testing: `DefaultNestsSpeaker.close()`
held its `gate` mutex while calling `handle.close()` which then called
back through `parent.broadcastClosed()` → self-deadlock. Fixed by
making `broadcastClosed` lockless (StateFlow updates are atomic; the
activeHandle compare-and-set is benign under the gate's exclusion of
concurrent startBroadcasting calls).
Verified: `:nestsClient:jvmTest` (78 tests, all green) +
`./gradlew spotlessApply` clean.
Claude
0afde79afd