Adds "Reproducir carpeta" (sequential) and "Reproducir aleatorio"
(Fisher-Yates over the name-sorted order) as folder-scoped playable
actions, with auto-advance on track completion and skip next/prev.
Isolation from live radio is structural, not disciplinary: the
public playMediaItem always clears the local queue on any call, and
a new private _encolarCambioFuente is the only path that can advance
within it. _cambiarFuente, ControladorReconexion, and the reconnect
error path are untouched -- confirmed by a byte-for-byte empty diff
on all 4 pre-existing radio/reconnect regression suites, independently
re-run before and after (21/21 both times).
Handler wiring itself is static-review-only (PluriWaveAudioHandler
can't be unit-instantiated); the isolation/advance/race-guard
decision logic is extracted into cola_local.dart's pure functions,
which are fully unit-tested.
Local tracks now show embedded title/artist/album art (via native
MediaMetadataRetriever, cached through the existing FileProvider)
instead of the raw filename, falling back gracefully when a file
has no usable tags. Adds two navigable entry points per folder: sort
by audio quality (bitrate, capped at 150 tracks per folder to bound
worst-case latency) and alphabetical name buckets -- the closest
realistic form of "filtering" given Android Auto has no text-search
UI in this integration.
Metadata resolves only for the page actually being browsed (same
slice-cheap-then-map discipline as the paging change), backed by a
flat 256-entry LRU session cache that survives across pages. No new
permission, no new pub dependency, no l10n changes (car-tree labels
stay hardcoded Spanish, matching every existing label in the tree).
Folders over the 50-item cap now show a "Mas..." item that reveals
the next page on tap, instead of silently dropping the rest. Paging
slices the cheap raw list before building any MediaItem, so items
beyond the requested page are never resolved (art, title) -- proven
by a call-count test. Also swaps the raw SAF content:// URI shown in
settings for a parsed, human-readable folder name with a localized
fallback across all 13 locales.
servicio_audio.dart is untouched; this stays entirely within the
local-music tree/dispatch layer.
Phase 1: pick a device folder via SAF (persisted grant, no new
permission), browse its nested subfolders/tracks as a 5th Android
Auto root folder (hidden until configured), and play tracks through
the existing pipeline (EQ, art rotation, cold-start-safe source).
No metadata/sort/filter/shuffle yet -- filename is the title, generic
rotating art is the placeholder; deferred to a follow-up phase.
Adds a new pluriwave/file_actions native method (listAudioChildren)
and an onActivityResult override in MainActivity for the SAF folder
picker -- both static-review-only, no Android build available here.
Adds an Ecualizador folder listing the 6 fixed presets; selecting one
applies and persists it through the existing headless-safe seam
without touching playback or the now-playing media item.
Favoritos now renders non-empty custom groups as grupo:<id>
sub-folders (hidden when empty) with ungrouped stations left as
direct leaves, reusing the existing hijos() path so the zero-groups
case stays byte-identical to today's flat list.
Android Auto no longer copies the launcher icon as placeholder art; it
rotates through the same 4 on-brand station_art assets the phone UI
already uses, keyed by the same per-station hash for visual parity.
Malformed or unusable favicon URLs (including a Dart Uri quirk where
'http://' reports hasAuthority=true with an empty host) now fail the
validity gate instead of being handed to the OS media browser as-is.
Browsable items also show codec/bitrate as a subtitle when known.
Expose PluriWave to Android Auto (projected) as a media app:
- Declare car media support (automotive_app_desc.xml + manifest meta-data)
so Android Auto discovers the existing MediaBrowserService.
- New navegacion_auto.dart: ConstructorArbolAuto builds the browse tree
(Favoritos / Todas las emisoras / Mis emisoras, 50-item cap, stable
emisora:<id> media ids), reproducirPorMediaId routes a car tap to the
existing playMediaItem pipeline, FuenteEmisorasAutoLocal serves the tree
cold-start-safe (local favorites/custom stations before Flutter UI runs).
- PluriWaveAudioHandler overrides getChildren/getMediaItem/playFromMediaId
as thin delegations; playback pipeline untouched.
- EstadoRadio pushes live station snapshots to the browse source and
reconciles the selected station when playback starts from the car.
- Every playable item ships title + artUri; stations without logo fall
back to a bundled default art (android.resource://).
Tests: 52/52 green (10 new navegacion_auto, 2 new estado_radio, plus
audio safety-net suites). Handler overrides and native XML are
static-review-only (no Android build env). Size exception approved for a
single reviewable commit.
FreeTLab
Javier Bautista Fernández