fn_registry/dev/issues/0158-matrix-client-android-livekit-calls.md at 3be188a921278167fe9720c20b1723414649f0e6

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egutierrez a3f75d61ec chore: avance acumulado de sesiones previas (reorg dev/issues + ajustes)

Reorganizacion de dev/issues en subcarpetas (completed/, cpp/, gamedev/,
kanban/, trading/, imagegen/, matrix/) y cambios acumulados en cmd/fn/pyrunner,
.claude/commands y settings. Trabajo de otro LLM/sesion, commiteado a peticion
del usuario para desbloquear el working tree. Excluido logs/ardour_mcp_server.log (ruido).

2026-06-30 14:43:51 +02:00

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Objetivo

Llamadas nativas via io.livekit:livekit-android SDK oficial. Codecs HW (H.264/VP9 hardware decoder), audio focus + AEC/NS nativos, MediaSession para controls en lockscreen, Picture-in-Picture mode Android nativo. Soporta 1:1 + grupales (limite 16 del LiveKit config actual).

Tareas

Backend (compartido con cliente PC):
- Reusar livekit_token_gen_go_infra que esta en flow 0010.
- Cliente Android pide token al mismo endpoint /api/call/token que el cliente PC.
ViewModel:
- CallViewModel(matrixClient, roomId):
  - joinCall() — pide token + conecta Room.connect().
  - toggleMic(), toggleCamera(), toggleScreenShare().
  - hangup().
  - Flow<CallState> con participants, tracks, connection state.
Compose:
- CallScreen fullscreen:
  - Grid tiles participantes (Flow layout responsive 1/2/4/9/16).
  - Tile principal: active speaker (track audio level del SDK).
  - Controles bottom: mic, cam, screen, raise hand, hangup.
- IncomingCallScreen fullscreen con accept/decline (system overlay activity).
- CallTile composable con VideoView (SurfaceViewRenderer del SDK).
PiP (Picture-in-Picture):
- Activity con setPictureInPictureParams().
- Auto-enter PiP al minimizar la app durante call.
- PiP tile: video remoto + boton hangup.
Audio routing:
- AudioFocusRequest (Android 8+) — focus exclusivo durante call.
- Switch speaker/earpiece/bluetooth via AudioManager.setSpeakerphoneOn() + connection state listeners para audifonos BT.
- Echo cancellation + noise suppression: SDK los habilita por defecto, verificar.
ICE/TURN: igual que cliente PC, depende del LiveKit config server-side.
Tests:
- Instrumented Call1to1Test con emulator + segundo cliente (PC) — connect, video, hangup.
- Manual ScreenShareTest con device fisico.
- Manual 4ParticipantsTest.
- Manual PiPTest — call activa + Home button -> PiP aparece.

Funciones del registry a crear

livekit_call_kotlin_infra — wrapper Room SDK + permission helpers.
audio_routing_kotlin_infra — speaker/earpiece/BT switching.
CallScreen_kotlin_ui — fullscreen call UI.
CallTile_kotlin_ui — tile con VideoView.
IncomingCallScreen_kotlin_ui — accept/decline overlay activity.

Acceptance

Start call desde Android -> PC Wails recibe y conecta.
30s call con video+audio nativo (verificar HW codec via adb shell dumpsys media.codec).
Mute mic + apagar cam refleja en otro cliente.
Screen share desde Android (con MediaProjection) visible en PC.
PiP: minimizar app durante call -> tile flotante con video remoto.
Bluetooth headphones: cambio automatico al conectar/desconectar.
Battery: call 30min con AC + WiFi <15% drain.

Notas

Permissions runtime: RECORD_AUDIO, CAMERA, POST_NOTIFICATIONS (Android 13+), FOREGROUND_SERVICE, FOREGROUND_SERVICE_MEDIA_PROJECTION (Android 14+).
Foreground service requerido para mantener call con app en background (issue 0161).
E2EE en call (insertable streams): TBD post-DoD, igual que en cliente PC.
Connection service Android (sistema): TBD, opcional. Permite integracion con dialer system + Bluetooth Car. Valorar coste/beneficio.

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