The card ran ffprobe, both FFmpeg sessions, SAF temp copies, the
native spectral-cutoff job and its cancellation inside State. Move that
pipeline verbatim into AudioAnalysisRunner in
lib/services/audio_analysis_runner.dart together with the private
per-run records from the widget's models part, which is now empty and
removed.
The card keeps request ids and every setState. The runner takes a
`bool Function() isCancelled` that the card builds from the same
`!mounted || requestId != _spectrogramRequestId` test, polled at the
same points that used to call _checkAnalysisRequest. cancel() and
dispose() run the jobs invalidate/dispose, network cancel and native
job cancel in the original order.
Subprocess order, temp file names and cleanup, SAF copy and the native
data job payload are unchanged.
The card owned the bundle storage (key derivation, {key}.json,
{key}.png and {key}_ch{n}.png, the shared trim budget) as static
members, and the cache page spelled the audio_analysis_cache directory
literal twice more.
Move the storage verbatim into AudioAnalysisDiskCache next to the
existing lease/trim policy. AudioAnalysisDiskCache.directoryIn is now
the only place that names the directory; the card's cacheDir and both
cache page call sites use it, with the page keeping its non-creating
behavior and await order. loadFromCache takes the card's network input
as a parameter instead of reading the field.
The 63-bit FNV-1a cache key stays local: lib/utils/hash_utils.dart
fnv1a32 uses a different basis, prime and width, so reusing it would
rename every cached bundle on devices.
The audio analysis card mixed FFmpeg argument builders, astats and
metadata parsers and the spectral cutoff estimator with widget state.
Move them verbatim into lib/services/audio_analysis_ffmpeg.dart so the
runner and cache can depend on them without importing a widget.
The parsers return ChannelAnalysisStats, so the two public result
models (AudioAnalysisData, ChannelAnalysisStats) move verbatim from the
widget's models part into lib/services/audio_analysis_models.dart. The
per-run private records stay in the part for now.
Only two names change: the unsupported-codec exception loses its
leading underscore because the widget and the future runner live in
different libraries, and the in-class _parseChannelStats becomes the
top-level parseChannelStats. The widget re-exports both service files,
so tests and importers are unchanged.
The listening summary and system volume providers lived in UI files.
They move verbatim to lib/providers with the same names; the old files
re-export them so tests and other importers are unchanged.
The create, picker and rename dialogs were three copies of one form. They
now call promptPlaylistName, whose controller lives in a dialog state and is
disposed with it.
artist_screen.dart mixed the artist page with the whole discography
download flow (option sheet, album fetching, queueing and its progress
dialog). Moving that flow into its own part keeps one responsibility per
file and shrinks the screen file. Bodies are moved verbatim.
Batch actions, clickable metadata, playback, auth launcher, action forms and
the glass warmup drive UI flows, so they belong with the controllers. Files
with more than three importers (or an importer that must stay untouched) keep
a one-line re-export at the old path.
BouncingIcon, SlidingIcon and SpinIcon are standalone widgets, so they now
live in lib/widgets/nav_destination_icons.dart. The SAF repair, upgrade intro,
update, announcement and SAF migration prompts move into a part as an
extension on the shell State; the call sites in initState are unchanged.
Options group, quick-select button, switch field, selection field and
section card become public StatelessWidgets in metadata_editor_fields.dart
with unchanged build bodies; State fields they read (color scheme, fetching
flag) are now constructor parameters.
Pure moves: download label helpers and the download dialogs become parts of
the queue_tab library, and the animated sliver grid becomes a public widget
in lib/widgets since it uses no private state.
The month-year DateFormat was rebuilt for every loaded row and every
fast-scroller drag label; it is now cached per locale tag. Constant-pattern
RegExp objects built per call (or per word) are now static or top-level.
Nothing read parentPageController, parentPageIndex or nextPageIndex, and the
Library tab root watched showExtensionStore only to compute them, so toggling
that setting rebuilt the tab for nothing. No caller passed the fast scroller
onDragStart/onDragEnd callbacks.
The empty lyrics page offers Search online, which asks the enabled lyrics
providers in their configured order. The result is shown in the player
only and never written to the file; a late result is dropped after the
track changes, and a miss says so.
Offer default and full-screen artwork in Material and Mornye, retaining landscape layouts and full-screen Mornye motion artwork. Keep the Material header readable over bright covers and normalize invalid saved styles without resetting other settings.
Validation: 144 related Flutter tests, flutter analyze, generated settings, formatter and diff checks.
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