enricobuehler 5ca0dfdcd2 fix(apple): stream audio coexists with Music instead of fighting it ...

Field report, with a competitor cited doing it right: connecting to a host
PAUSED the user's Apple Music, and resuming Music mid-stream silenced the
stream's audio for good. Both are one defect — the audio session was
EXCLUSIVE. Activating it evicted whoever was playing (the pause at
connect), and Music's resume evicted us right back; iOS stops the engines
on that interruption and restarts nothing, so the stream stayed silent
until reconnect.

`.mixWithOthers` on every category path (playAndRecord, playback, tvOS) is
the heart of it: a mixable session interrupts nobody at activation and is
not interrupted by another app's mixable playback — game audio rides over
the playlist, the way a console does it. The trade is that a mixable
session is nobody's Now Playing app, so the lock screen keeps showing the
music. For a game stream that is the correct reading.

The other half is `installInterruptionObserver`: interruptions still exist
for a mixable session — a phone call, Siri, an app claiming a NON-mixable
session of its own — and ending one restarts nothing by itself. On
`.ended` the observer re-runs the full activation (an interruption can drop
the category, and the earpiece steer is per-route) and revives the engines
through the same conservative `reviveStoppedEngines` the route-change and
media-reset observers already use — unconditionally, not only on the
`.shouldResume` hint: a live stream is the one case where the user's intent
to keep hearing it is not in doubt, and the revive already declines when
playback never went down.

The teardown's `.notifyOthersOnDeactivation` stays as a courtesy for the
edge where an old exclusive install interrupted something; a mixable
session has nobody to notify.

macOS build (session paths are #if'd out there), tvOS typecheck, 284 tests.

2026-08-10 12:47:05 +02:00

..

AudioDevices.swift

fix(apple): switching audio device mid-stream killed the sound for the rest of the session

2026-08-09 11:03:10 +02:00

AudioDeviceWatcher.swift

fix(apple): switching audio device mid-stream killed the sound for the rest of the session

2026-08-09 11:03:10 +02:00

AudioRing.swift

fix(audio): detect jitter before it is audible, and stop re-probing a depth the link just refused

2026-08-08 11:05:53 +02:00

OpusCodec.swift

feat(apple): the mic uplink drops to mono 10 ms packets and stops shoveling its FIFO

2026-07-31 21:57:48 +02:00

SessionAudio.swift

fix(apple): stream audio coexists with Music instead of fighting it

2026-08-10 12:47:05 +02:00