FreeTLab
0380bbb1e7
- Construct the audio player with an enlarged live-stream buffer (15-50s forward cushion, 2.5s to start, 5s after rebuffer) so short network drops play through silently - Add reconnect-on-stall state machine with bounded exponential backoff (1/2/4/8/16s, ~90s total window, 5 attempts) that re-prepares to the live edge; backoff/decision logic extracted to controlador_reconexion.dart as pure testable code - Surface a new reconnecting playback state in the mini player and full player (localized in all 13 locales) instead of error dialogs during the retry window; a single friendly error appears only after exhaustion - Guard interplay: user pause/stop cancels retries, audio interruptions cancel reconnect, alarm wake-up path keeps precedence, recording fails cleanly during drops - Reset retry budget on station change; route stream timeouts through the network-error class - 10 new tests (99 total green), flutter analyze clean
687 lines
23 KiB
Dart
687 lines
23 KiB
Dart
import 'dart:async';
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import 'dart:developer' as developer;
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import 'dart:ui' show Locale;
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import 'package:audio_service/audio_service.dart';
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import 'package:just_audio/just_audio.dart';
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import '../l10n/display_names.dart';
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import '../l10n/gen/app_localizations.dart';
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import '../modelos/emisora.dart';
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import '../modelos/preset_ecualizador.dart';
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import 'controlador_reconexion.dart';
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import 'servicio_audio_session.dart';
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/// Estado de reproducción expuesto al UI.
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enum EstadoReproduccion {
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detenido,
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cargando,
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reproduciendo,
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pausado,
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/// Transient network stall: the handler is retrying with backoff (S7-R2).
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/// UI surfaces it as a loading indicator, never as an error dialog (S7-R3).
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reconectando,
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error,
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}
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// ─────────────────────────────────────────────────────────────────────────────
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// Handler global — inicializado en main.dart con AudioService.init
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// ─────────────────────────────────────────────────────────────────────────────
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PluriWaveAudioHandler? _handlerGlobal;
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void registrarHandler(PluriWaveAudioHandler handler) {
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_handlerGlobal = handler;
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}
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/// Wrapper de alto nivel para el UI.
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class ServicioAudio {
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PluriWaveAudioHandler get _handler {
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assert(
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_handlerGlobal != null,
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'registrarHandler() no fue llamado en main.dart',
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);
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return _handlerGlobal!;
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}
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Emisora? get emisoraActual => _handler.emisoraActual;
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void configurarLocalizaciones(AppLocalizations l10n) {
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_handler.configurarLocalizaciones(l10n);
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}
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Stream<EstadoReproduccion> get estadoStream =>
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_handler.playbackState.map((s) {
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if (s.processingState == AudioProcessingState.error) {
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return EstadoReproduccion.error;
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}
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if (_handler.reconectando) return EstadoReproduccion.reconectando;
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if (s.processingState == AudioProcessingState.loading ||
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s.processingState == AudioProcessingState.buffering) {
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return EstadoReproduccion.cargando;
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}
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if (s.playing) return EstadoReproduccion.reproduciendo;
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if (s.processingState == AudioProcessingState.idle) {
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return EstadoReproduccion.detenido;
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}
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return EstadoReproduccion.pausado;
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});
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Future<void> reproducir(Emisora emisora) async {
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final item = MediaItem(
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id: emisora.url,
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title: localizedStationName(
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lookupAppLocalizations(const Locale('es')),
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emisora.nombre,
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),
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artist: emisora.pais ?? '',
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album: 'PluriWave',
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artUri:
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emisora.favicon != null && emisora.favicon!.isNotEmpty
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? Uri.tryParse(emisora.favicon!)
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: null,
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extras: {'uuid': emisora.uuid},
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);
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await _handler.playMediaItem(item);
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}
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Future<void> pausar() => _handler.pause();
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Future<void> reanudar() => _handler.play();
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Future<void> togglePlay() async {
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if (_handler.playbackState.value.playing) {
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await pausar();
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} else {
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await reanudar();
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}
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}
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Future<void> detener() => _handler.stop();
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Future<void> setVolumen(double vol) => _handler.setVolumen(vol);
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double get volumen => _handler.volumen;
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bool get estaSonando => _handler.playbackState.value.playing;
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Stream<int?> get androidAudioSessionIdStream async* {
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yield _handler.androidAudioSessionId;
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yield* _handler.androidAudioSessionIdStream;
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}
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Future<void> dispose() async {}
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// ── Ecualizador ───────────────────────────────────────────────────────────
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AndroidEqualizer? get ecualizador => _handler.ecualizador;
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bool get ecualizadorDisponible => _handler.ecualizadorDisponible;
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PresetEcualizador get presetActual => _handler.presetActual;
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Future<void> aplicarPreset(PresetEcualizador preset) =>
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_handler.aplicarPreset(preset);
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Future<void> setEcualizadorActivo(bool activo) =>
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_handler.setEcualizadorActivo(activo);
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Future<void> setBanda(int index, double db) => _handler.setBanda(index, db);
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}
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// ─────────────────────────────────────────────────────────────────────────────
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// AudioHandler
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// ─────────────────────────────────────────────────────────────────────────────
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class PluriWaveAudioHandler extends BaseAudioHandler
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with SeekHandler
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implements ObjetivoAudioInterrumpible {
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static const _timeoutCambioFuente = Duration(seconds: 12);
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static const _timeoutCierrePlayer = Duration(seconds: 3);
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static const _factorAtenuacion = 0.3;
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// ── Live-stream buffer (Design 7.1, S7-R1) ────────────────────────────────
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// Forward jitter cushion for live radio: there is no rewind history, so the
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// buffer only absorbs short drops (up to roughly what was buffered when the
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// drop hit); on reconnect we rejoin the live edge.
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static const bufferMinimo = Duration(seconds: 15);
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static const bufferMaximo = Duration(seconds: 50);
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static const bufferParaIniciar = Duration(milliseconds: 2500);
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static const bufferTrasRebuffer = Duration(seconds: 5);
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/// Buffer configuration applied at [AudioPlayer] construction. Exposed so
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/// tests can assert the values without touching platform channels (S7-R1).
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static const configuracionCargaAndroid = AudioLoadConfiguration(
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androidLoadControl: AndroidLoadControl(
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minBufferDuration: bufferMinimo,
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maxBufferDuration: bufferMaximo,
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bufferForPlaybackDuration: bufferParaIniciar,
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bufferForPlaybackAfterRebufferDuration: bufferTrasRebuffer,
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prioritizeTimeOverSizeThresholds: true,
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),
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);
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AndroidEqualizer _eq = AndroidEqualizer();
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late AudioPlayer _player = _crearPlayer();
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StreamSubscription<PlayerState>? _estadoPlayerSub;
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StreamSubscription<Duration>? _bufferedSub;
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StreamSubscription<PlaybackEvent>? _eventosSub;
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StreamSubscription<int?>? _androidAudioSessionIdSub;
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final _androidAudioSessionIdController = StreamController<int?>.broadcast();
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int? _androidAudioSessionId;
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Future<void> _colaCambioFuente = Future<void>.value();
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int _revisionFuente = 0;
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Emisora? emisoraActual;
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double _volumen = 1.0;
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double get volumen => _volumen;
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AppLocalizations? _l10n;
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/// Intent-to-play flag (Designs 3.1/7.2): reflects the LAST explicit
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/// intent (play/pause/stop, including audio-session interruptions, which
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/// pause through [pausar]). The S7 reconnect state machine reads it to
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/// distinguish a network stall from an intentional pause.
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bool _intencionReproducir = false;
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/// Ducked state requested by the audio session (transient focus loss).
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bool _atenuado = false;
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/// Reconnect-on-stall state machine (Design 7.2, S7-R2).
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final ControladorReconexion _reconexion = ControladorReconexion();
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/// True while the handler is inside the reconnect window. [ServicioAudio]
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/// maps it to [EstadoReproduccion.reconectando] so the UI shows a loading
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/// indicator instead of an error during retries (S7-R3).
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bool _reconectando = false;
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bool get reconectando => _reconectando;
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AndroidEqualizer? get ecualizador => _eq;
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bool _eqDisponible = false;
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bool get ecualizadorDisponible => _eqDisponible;
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bool _ecualizadorActivo = true;
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bool get ecualizadorActivo => _ecualizadorActivo;
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PresetEcualizador _presetActual = PresetEcualizador.flat;
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PresetEcualizador get presetActual => _presetActual;
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int? get androidAudioSessionId => _androidAudioSessionId;
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Stream<int?> get androidAudioSessionIdStream =>
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_androidAudioSessionIdController.stream;
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PluriWaveAudioHandler() {
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_conectarStreamsPlayer();
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}
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AppLocalizations get _textos {
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final actual = _l10n;
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if (actual != null) return actual;
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return lookupAppLocalizations(const Locale('es'));
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}
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void configurarLocalizaciones(AppLocalizations l10n) {
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_l10n = l10n;
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}
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AudioPlayer _crearPlayer() {
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return AudioPlayer(
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audioPipeline: AudioPipeline(androidAudioEffects: [_eq]),
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audioLoadConfiguration: configuracionCargaAndroid,
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);
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}
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void _conectarStreamsPlayer() {
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_estadoPlayerSub = _player.playerStateStream.listen((state) {
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final playing = state.playing;
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final proc = state.processingState;
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if (playing && proc == ProcessingState.ready) {
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// Successful (re)connection: reset the backoff so the next stall
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// starts over, and leave the reconnect window (S7-R7).
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_reconexion.restablecer();
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_reconectando = false;
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}
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playbackState.add(
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playbackState.value.copyWith(
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controls: [
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if (playing) MediaControl.pause else MediaControl.play,
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MediaControl.stop,
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],
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systemActions: const {MediaAction.seek, MediaAction.stop},
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androidCompactActionIndices: const [0],
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processingState: _mapProcState(proc),
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playing: playing,
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bufferedPosition: _player.bufferedPosition,
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speed: _player.speed,
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),
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);
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});
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_bufferedSub = _player.bufferedPositionStream.listen((pos) {
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playbackState.add(playbackState.value.copyWith(bufferedPosition: pos));
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});
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_eventosSub = _player.playbackEventStream.listen(
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(_) {},
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onError: (Object error, StackTrace stackTrace) {
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_gestionarErrorReproduccion(error);
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},
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);
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_androidAudioSessionIdSub = _player.androidAudioSessionIdStream.listen((
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sessionId,
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) {
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_androidAudioSessionId = sessionId;
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if (!_androidAudioSessionIdController.isClosed) {
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_androidAudioSessionIdController.add(sessionId);
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}
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});
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}
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/// Gestiona cualquier error de reproducción de ExoPlayer.
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///
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/// Network-class failures while the user still intends to play enter the
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/// reconnect state machine (S7-R2) instead of surfacing a terminal error;
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/// only retry exhaustion (or non-network errors) falls through to the
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/// existing error path, so the user sees a single error — no spam per retry.
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void _gestionarErrorReproduccion(Object error) {
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if (_intentarReconexion(error)) return;
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String mensaje;
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String codigoLog;
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if (error is PlayerException) {
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codigoLog = 'PlayerException(code=${error.code}): ${error.message}';
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mensaje = _mensajeAmigable(error);
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} else if (error is TimeoutException) {
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codigoLog = 'TimeoutException: $error';
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mensaje = _textos.audioErrorTimeout;
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} else {
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codigoLog = 'Error desconocido: $error';
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mensaje = _textos.audioErrorGeneric;
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}
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developer.log(
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'[PluriWave] Error reproducción: $codigoLog',
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name: 'ServicioAudio',
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level: 900,
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);
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_detenerReconexion();
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playbackState.add(
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playbackState.value.copyWith(
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processingState: AudioProcessingState.error,
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playing: false,
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errorMessage: mensaje,
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),
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);
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emisoraActual = null;
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mediaItem.add(null);
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_player.stop().catchError((_) {});
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}
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/// Network-class failures: ExoPlayer 2xxx source errors (no internet, bad
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/// URL/host, timeout) and our own source-change timeout guard.
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bool _esErrorDeRed(Object error) =>
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(error is PlayerException && error.code >= 2000 && error.code < 3000) ||
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error is TimeoutException;
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/// Attempts to enter (or stay in) the reconnect window. Returns true when a
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/// retry was scheduled and the terminal error path must be skipped.
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bool _intentarReconexion(Object error) {
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if (!_esErrorDeRed(error)) return false;
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final item = mediaItem.value;
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if (item == null) return false;
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final decision = _reconexion.registrarFallo(
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intencionReproducir: _intencionReproducir,
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alReintentar: () => _reintentarFuente(item),
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);
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if (decision != DecisionReconexion.reintentar) {
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// ignorar (user pause/stop or interruption) keeps the player quiet;
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// agotado falls through to the single terminal error (S7-R2-C).
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if (decision == DecisionReconexion.ignorar) {
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_reconectando = false;
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}
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return decision == DecisionReconexion.ignorar;
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}
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_reconectando = true;
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developer.log(
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'[PluriWave] Stall de red, reintento ${_reconexion.intentos}/'
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'${_reconexion.maxReintentos} en '
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'${_reconexion.retrasoParaIntento(_reconexion.intentos).inSeconds}s',
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name: 'ServicioAudio',
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level: 800,
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);
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playbackState.add(
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playbackState.value.copyWith(
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processingState: AudioProcessingState.buffering,
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playing: false,
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errorMessage: null,
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),
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);
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return true;
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}
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/// Re-issues the live source through the revision-guarded source-change
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/// queue, so a user source switch or stop during the retry cancels it.
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void _reintentarFuente(MediaItem item) {
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if (!_intencionReproducir) {
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_detenerReconexion();
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return;
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}
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final revision = ++_revisionFuente;
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_colaCambioFuente = _colaCambioFuente
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.catchError((_) {})
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.then((_) => _cambiarFuente(item, revision))
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// Failures already routed through _gestionarErrorReproduccion, which
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// schedules the next backoff retry or surfaces the terminal error.
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.catchError((_) {});
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}
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void _detenerReconexion() {
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_reconexion.cancelar();
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_reconectando = false;
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}
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/// Traduce códigos de error de ExoPlayer a mensajes para el usuario.
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String _mensajeAmigable(PlayerException e) {
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final code = e.code;
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if (code >= 2000 && code < 3000) {
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if (code == 2001) return _textos.audioErrorNoInternet;
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if (code == 2002) return _textos.audioErrorInvalidUrl;
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if (code == 2003) return _textos.audioErrorNotFound;
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if (code == 2004) return _textos.audioErrorTimeout;
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return _textos.audioErrorCannotConnect;
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}
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if (code >= 3000 && code < 4000) {
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return _textos.audioErrorUnsupportedFormat;
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}
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if (code >= 4000 && code < 5000) {
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return _textos.audioErrorDecode;
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}
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final msg = e.message ?? '';
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if (msg.contains('Cleartext') || msg.contains('cleartext')) {
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return _textos.audioErrorCleartext;
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}
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if (msg.contains('CERTIFICATE') || msg.contains('HandshakeException')) {
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return _textos.audioErrorSsl;
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}
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return _textos.audioErrorCannotPlay;
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}
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AudioProcessingState _mapProcState(ProcessingState state) {
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return switch (state) {
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ProcessingState.idle => AudioProcessingState.idle,
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ProcessingState.loading => AudioProcessingState.loading,
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ProcessingState.buffering => AudioProcessingState.buffering,
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ProcessingState.ready => AudioProcessingState.ready,
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ProcessingState.completed => AudioProcessingState.completed,
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};
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}
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@override
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Future<void> playMediaItem(MediaItem mediaItem) async {
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_intencionReproducir = true;
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// Fresh user play/source switch: restart the backoff from scratch and
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// leave any previous reconnect window (S7-R2).
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_reconexion.restablecer();
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_reconectando = false;
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final revision = ++_revisionFuente;
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_colaCambioFuente = _colaCambioFuente
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.catchError((_) {})
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.then((_) => _cambiarFuente(mediaItem, revision));
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return _colaCambioFuente;
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}
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Future<void> _cambiarFuente(MediaItem mediaItem, int revision) async {
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this.mediaItem.add(mediaItem);
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emisoraActual = _emisoraDesdeMediaItem(mediaItem);
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playbackState.add(
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playbackState.value.copyWith(
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processingState: AudioProcessingState.loading,
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playing: false,
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errorMessage: null,
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),
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);
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try {
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await _recrearPlayer();
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if (revision != _revisionFuente) return;
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await _player.setUrl(mediaItem.id).timeout(_timeoutCambioFuente);
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if (revision != _revisionFuente) return;
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_iniciarPlaySinBloquear(mediaItem, revision);
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unawaited(_activarEcualizador());
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} on PlayerException catch (e) {
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if (revision == _revisionFuente) {
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_gestionarErrorReproduccion(e);
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// Reconnect engaged: complete normally so callers do not surface a
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// snackbar/dialog while the handler keeps retrying (S7-R3).
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if (_reconectando) return;
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}
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throw Exception(_mensajeAmigable(e));
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} on TimeoutException catch (e) {
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// A real network drop usually surfaces as our 12s source timeout:
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// route it through the reconnect machine instead of a terminal error.
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if (revision == _revisionFuente) {
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_gestionarErrorReproduccion(e);
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if (_reconectando) return;
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}
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rethrow;
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} on Exception catch (e, stackTrace) {
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developer.log(
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'[PluriWave] Error inesperado en playMediaItem: $e',
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name: 'ServicioAudio',
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level: 900,
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stackTrace: stackTrace,
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);
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if (revision == _revisionFuente) {
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playbackState.add(
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playbackState.value.copyWith(
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processingState: AudioProcessingState.error,
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playing: false,
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errorMessage: _textos.audioErrorUnexpectedPlayback,
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),
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);
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emisoraActual = null;
|
|
this.mediaItem.add(null);
|
|
}
|
|
rethrow;
|
|
}
|
|
}
|
|
|
|
Future<void> _recrearPlayer() async {
|
|
await _estadoPlayerSub?.cancel();
|
|
await _bufferedSub?.cancel();
|
|
await _eventosSub?.cancel();
|
|
await _androidAudioSessionIdSub?.cancel();
|
|
|
|
final anterior = _player;
|
|
try {
|
|
await anterior.stop().timeout(_timeoutCierrePlayer);
|
|
} catch (_) {}
|
|
try {
|
|
await anterior.dispose().timeout(_timeoutCierrePlayer);
|
|
} catch (_) {}
|
|
|
|
_eq = AndroidEqualizer();
|
|
_eqDisponible = false;
|
|
_androidAudioSessionId = null;
|
|
_player = _crearPlayer();
|
|
await _player.setVolume(_volumenEfectivo);
|
|
_conectarStreamsPlayer();
|
|
}
|
|
|
|
void _iniciarPlaySinBloquear(MediaItem mediaItem, int revision) {
|
|
unawaited(
|
|
_player.play().catchError((Object error, StackTrace stackTrace) {
|
|
developer.log(
|
|
'[PluriWave] Error al iniciar ${mediaItem.title}: $error',
|
|
name: 'ServicioAudio',
|
|
level: 900,
|
|
stackTrace: stackTrace,
|
|
);
|
|
if (revision == _revisionFuente) {
|
|
_gestionarErrorReproduccion(error);
|
|
}
|
|
}),
|
|
);
|
|
}
|
|
|
|
Future<void> _activarEcualizador() async {
|
|
try {
|
|
final params = await _eq.parameters;
|
|
_eqDisponible = params.bands.isNotEmpty;
|
|
if (_eqDisponible) {
|
|
await _eq.setEnabled(_ecualizadorActivo);
|
|
await aplicarPreset(_presetActual);
|
|
}
|
|
} catch (_) {
|
|
_eqDisponible = false;
|
|
}
|
|
}
|
|
|
|
/// Aplica un preset al ecualizador nativo Android.
|
|
Future<void> aplicarPreset(PresetEcualizador preset) async {
|
|
_presetActual = preset;
|
|
if (!_eqDisponible) return;
|
|
try {
|
|
await _eq.setEnabled(_ecualizadorActivo);
|
|
if (!_ecualizadorActivo) return;
|
|
final params = await _eq.parameters;
|
|
for (
|
|
int i = 0;
|
|
i < params.bands.length && i < preset.bandas.length;
|
|
i++
|
|
) {
|
|
await params.bands[i].setGain(
|
|
_mapearGananciaNativa(
|
|
preset.bandas[i],
|
|
minDecibels: params.minDecibels,
|
|
maxDecibels: params.maxDecibels,
|
|
),
|
|
);
|
|
}
|
|
} catch (_) {}
|
|
}
|
|
|
|
/// Ajusta una banda individual.
|
|
Future<void> setBanda(int index, double db) async {
|
|
final bandas = List<double>.from(_presetActual.bandas);
|
|
if (index >= 0 && index < bandas.length) {
|
|
bandas[index] = db;
|
|
_presetActual = _presetActual.copyWithBandas(bandas);
|
|
}
|
|
if (!_eqDisponible || !_ecualizadorActivo) return;
|
|
try {
|
|
final params = await _eq.parameters;
|
|
if (index < params.bands.length) {
|
|
await params.bands[index].setGain(
|
|
_mapearGananciaNativa(
|
|
db,
|
|
minDecibels: params.minDecibels,
|
|
maxDecibels: params.maxDecibels,
|
|
),
|
|
);
|
|
}
|
|
} catch (_) {}
|
|
}
|
|
|
|
double _mapearGananciaNativa(
|
|
double db, {
|
|
required double minDecibels,
|
|
required double maxDecibels,
|
|
}) {
|
|
final normalizado = ((db.clamp(-12.0, 12.0) + 12.0) / 24.0).clamp(0.0, 1.0);
|
|
return minDecibels + (normalizado * (maxDecibels - minDecibels));
|
|
}
|
|
|
|
Future<void> setEcualizadorActivo(bool activo) async {
|
|
_ecualizadorActivo = activo;
|
|
if (!_eqDisponible) return;
|
|
try {
|
|
await _eq.setEnabled(activo);
|
|
if (activo) {
|
|
await aplicarPreset(_presetActual);
|
|
}
|
|
} catch (_) {}
|
|
}
|
|
|
|
Future<void> setVolumen(double vol) async {
|
|
_volumen = vol.clamp(0.0, 1.0);
|
|
await _player.setVolume(_volumenEfectivo);
|
|
}
|
|
|
|
double get _volumenEfectivo =>
|
|
_atenuado ? _volumen * _factorAtenuacion : _volumen;
|
|
|
|
// ── ObjetivoAudioInterrumpible (audio-session seam, S3-R1) ───────────────
|
|
|
|
@override
|
|
bool get intencionReproducir => _intencionReproducir;
|
|
|
|
@override
|
|
bool get estaReproduciendo => playbackState.value.playing;
|
|
|
|
@override
|
|
Future<void> pausar() => pause();
|
|
|
|
@override
|
|
Future<void> reanudar() => play();
|
|
|
|
@override
|
|
Future<void> setAtenuado(bool atenuado) async {
|
|
if (_atenuado == atenuado) return;
|
|
_atenuado = atenuado;
|
|
await _player.setVolume(_volumenEfectivo);
|
|
}
|
|
|
|
@override
|
|
Future<void> play() {
|
|
_intencionReproducir = true;
|
|
return _player.play();
|
|
}
|
|
|
|
@override
|
|
Future<void> pause() {
|
|
// User (or audio-session interruption) pause: disarm any pending retry —
|
|
// a stall must never fight an intentional pause (S7-R2-B, S7-R6).
|
|
_intencionReproducir = false;
|
|
_detenerReconexion();
|
|
return _player.pause();
|
|
}
|
|
|
|
@override
|
|
Future<void> stop() async {
|
|
// User stop (including the sleep-timer fade-out stop): cancel reconnect
|
|
// so retries never restart playback after a stop (S7-R6).
|
|
_intencionReproducir = false;
|
|
_detenerReconexion();
|
|
_revisionFuente++;
|
|
await _player.stop();
|
|
emisoraActual = null;
|
|
mediaItem.add(null);
|
|
await super.stop();
|
|
}
|
|
|
|
@override
|
|
Future<void> seek(Duration position) => _player.seek(position);
|
|
|
|
@override
|
|
Future<void> onTaskRemoved() async {
|
|
await stop();
|
|
await _estadoPlayerSub?.cancel();
|
|
await _bufferedSub?.cancel();
|
|
await _eventosSub?.cancel();
|
|
await _androidAudioSessionIdSub?.cancel();
|
|
await _player.dispose();
|
|
await _androidAudioSessionIdController.close();
|
|
}
|
|
|
|
Emisora _emisoraDesdeMediaItem(MediaItem mediaItem) {
|
|
final uuid = mediaItem.extras?['uuid'] as String? ?? mediaItem.id;
|
|
return Emisora(
|
|
uuid: uuid,
|
|
nombre: mediaItem.title,
|
|
url: mediaItem.id,
|
|
pais: (mediaItem.artist?.isNotEmpty ?? false) ? mediaItem.artist : null,
|
|
favicon: mediaItem.artUri?.toString(),
|
|
);
|
|
}
|
|
}
|