feat(playback): album gain, album shuffle, and Opus - #646
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ReplayGain levels every track against every other one, which is what you want when a song comes up shuffled between two unrelated things. On a record mastered as a whole it is the wrong answer: the hushed interlude gets pushed up to meet the single, flattening exactly what the mastering engineer put there. Album gain applies one gain across the whole record instead. Which of the two is right depends on why the track is playing, and that was already known where the gain is applied -- queue_item.source_type travels all the way to the decoder. So the default mode is automatic: album gain while a record plays through, track gain otherwise, with no setting for the listener to manage. Track and album can still be forced. The clipping cap switches with the gain, which is the part that is easy to get wrong. In album mode it caps by the album peak -- the same number for every track on the record, so the cap is uniform. Capping each track by its own peak would pull tracks down according to their own loudest sample, re-introducing the per-track variation album mode exists to remove. Album numbers are tag-only: our analysis pass measures one track at a time and has no notion of a record, so a file gets album gain when a tagger wrote it and otherwise falls back to its track gain -- album mode would otherwise do nothing at all on a half-tagged library. The peak falls back with it, which is a deliberate trade the other way: an uneven cap is cosmetic, and the cap only ever binds where the alternative is audible clipping.
Everything was track by track. Shuffle took every album apart, and Mood Radio and the Daily Mix delivered three tracks of a record, out of order, between two unrelated artists. That is the right shape for a playlist and the wrong one for a library of albums. Shuffle becomes three-way: off, tracks, albums. In album mode only the order of the records is randomised -- inside each one the tracks are put back into disc and track order, so a record that arrived scrambled still plays the way it was pressed. The record you are in carries on rather than restarting: the current track keeps position 0, the rest of its album follows, and the tracks before it come round at the end. A track with no album is its own record, so loose files still shuffle like tracks instead of being welded into one block. Persisted as the existing on/off switch crossed with a grouping, rather than one three-valued key. player.shuffle stays authoritative for "is shuffle on", which is what MPD's random flag maps onto and what an older build reads; the grouping is remembered while shuffle is off, so a preference for whole records survives an off/on; and a profile that predates this needs no migration. Mood Radio and the Daily Mix get the same treatment behind one setting. A record fits a mood when most of what we have measured of it sits inside the tempo window -- a fraction rather than the median the issue suggested, because a median says nothing about spread: a record half ambient and half thrash lands in the middle and would be offered for a mood neither half belongs to. The cap is then spent in whole albums; truncating at 40 or 50 tracks would end the session halfway through a record, which is the one thing this exists to prevent. Two things found in the queue code on the way past. Reordering wrote every row back as source_type = 'manual', which threw away the source a play_event is attributed to and the boundary fill_queue uses to tell queued-up "play next" items from the source queue around them -- so shuffling an album silently cost both. Sources now survive a reorder, one per occurrence, so a queue holding the same track twice hands each copy back its own. And that same column is what lets ReplayGain's automatic mode tell a record playing through from a shuffled playlist, which album shuffle now also counts as.
Opus was not playable, and the scanner refused the extension so the files were not even indexed -- while the desktop entry and the AppStream metadata have been claiming audio/opus all along. symphonia was never the problem for the container: its Ogg reader ships a complete Opus mapper, so tags and durations already came out right. The missing piece was the decoder, and symphonia-codec-opus does not exist. It is libopus, through opusic-sys, built from the source the crate vendors. Two pure-Rust decoders were measured rather than assessed from their READMEs and both were rejected, for opposite reasons: one covers CELT only and refuses honestly outside that range, the other decodes everything and never returns an error, including on the files it gets wrong -- a 48 kb/s stereo file that is 94 % CELT and 6 % hybrid scores 30 dB against a libopus reference, which is silent corruption with nothing for the player to catch. Static on every platform. The Linux packages repackage the release binary rather than building from source, so a system libopus would mean a new runtime dependency in three packaging manifests and a library bundled into the AppImage, to gain nothing. The pre-skip is the part that was nearly missed. Every Opus stream opens with encoder priming that must not be played, and the obvious reading -- that the reader handles it, since it sets Track::delay and hands each packet a trim the way it does for Vorbis -- is wrong: the Opus packet parser reports a discard of zero for every packet. A 3-second file decoded to 144 312 frames instead of 144 000, the difference being exactly the 312-frame priming. The decoder now counts it, credits whatever the reader did report against it so a future upstream fix cannot make it drop twice, and does not re-apply it after a seek, where there is nothing to drop and doing so would eat real audio. Also here: one codec registry for the whole app instead of three call sites reaching for symphonia's default. Playback, the analysis pass and the scanner's probe have to agree on what this build can play -- that disagreement is what puts an unplayable track in a library.
Reported on discussion #519. A .m4a pulled with yt-dlp carries the auto-generated "Provided to YouTube by..." credit in its description tag. That blurb is comfortably more than three lines, which was the whole test for treating a description as lyrics -- so it won, and because the embedded tier ran before the sidecar, the .lrc the user had placed next to the file was never read at all. Other players showed the lyrics; we showed the credit. Two things were wrong at once. A description field is not a lyrics field, and reading it as one is a guess; and the guess outranked an explicit statement, which is the part that made it invisible -- the sidecar never got a turn. The description tier survives, because some rips really do put lyrics there, but it moves behind the sidecar and refuses the one blurb that reliably fills this field on files people actually have. The recogniser stays deliberately narrow and only looks near the top of the text, where the credit always sits: a false positive here costs someone their real lyrics, which is worse than the bug being fixed. Note for anyone already affected: the wrong text was cached, and the cache is never refetched once a row exists, so the entry has to be refetched once before the sidecar is read.
The three lot C features plus the lyrics precedence fix, written where the reasoning belongs: docs/features for how each one works, and a new invariant for the codec registry -- one place decides what this build can decode, because playback, the analysis pass and the scanner disagreeing is how an unplayable track gets into a library.
Flathub builds with the network off, so every crate has to be declared upfront with a sha256. opusic-sys and cmake are new in the lockfile. Worth knowing for whoever regenerates this next: running generate-sources.sh on Windows corrupts the file in a way CI does not catch. The upstream generator builds paths with os.path.join, so the git-sourced entries come out with backslash separators inside shell commands that will run under Linux in the Flathub sandbox -- and check-sources.py only verifies that every crate is covered, not that the paths are shaped like Linux paths. It also drops the trailing newline and writes CRLF throughout.
The one that matters, and it is a defect this branch created. Automatic ReplayGain asked a boolean -- "is shuffle grouping albums" -- and read source_type otherwise. Track shuffle then fell between the two: an album queue shuffled track by track still carries source_type = 'album' on every row, so auto applied album gain to a record that had just been taken apart. It was not even reachable before, because a reorder used to flatten the column to 'manual'; preserving it, which is a fix earlier on this same branch, is what exposed it. The engine now holds the whole three-state mode, and each state answers for itself. The Daily Mix album query had the artist filter pushed down into its aggregates, so a compilation counted two tracks toward the budget and contributed twenty, and had its tempo judged from whichever two those were. The artists pick the records; everything after that is measured over the whole record, which is what gets queued. The doc comment above it already claimed exactly that -- the reviewer read the code as well as the comment. The rest, each small: - a non-finite album gain now counts as absent rather than costing the file its perfectly good track gain; - the album query is ordered before it is cut, because a Daily Mix that reshuffles itself on every visit is the flicker the seeded shuffle exists to prevent; - the reported packet trim is bounded by what was actually decoded; - "Released on:" no longer condemns a description on its own -- it appears in ordinary sleeve notes, and the recogniser was supposed to be narrow; - write_queue_order reads the sources inside the transaction that rewrites them; - the per-artist album cap gets a name, like its neighbours. One was declined: there is no duplicate shuffle read to eliminate at the profile-load site -- the value is read once, and no earlier binding is in scope. cmake is a build dependency now, so it is declared rather than assumed: the five Linux workflows install it, CONTRIBUTING lists it, and the Flatpak manifest says out loud that it comes from the SDK and that no CI job builds that manifest.
One was stillborn -- written, then routed around. The other is worse than dead: write_shuffle(pool, true) forces the Tracks grouping, and now that turning shuffle on is supposed to restore whichever grouping the listener last picked, leaving the obvious-looking name in place invites a future caller to throw that preference away silently.
Two mattered. Switching shuffle from grouping tracks to grouping albums re-took the pre-shuffle snapshot from a queue that was already shuffled, so turning shuffle off afterwards restored the mess instead of undoing it. The snapshot has to be taken once, on the way in -- which was true for as long as shuffle was a boolean and you could only reach it from off. Giving it a third state is what made the path reachable. And the lyrics fix did not reach anyone it was for. The waterfall never refetches once a row exists, so correcting the reader alone would have left every already-affected track showing the YouTube credit forever, including the reporter's. A cached embedded row that the same recogniser identifies as a service credit is now dropped on read and re-resolved -- narrow, because the row is provably not lyrics, and governed by one predicate so what we refuse to store and what we refuse to serve cannot drift apart. The rest: - ALBUM_FIT and ALBUM_MIN_ANALYSED were defined twice, once per generator, with a comment pointing at the other copy. Two copies of a threshold is two answers to one question; they live in the shared module now. - AlbumCandidate::track_count said "playable and analysed" and counts every playable track. The count is the budgeting unit and has to match what gets queued, so the doc was the wrong half. - the Portuguese strings called Mood Radio something the rest of the file does not: both locales already say "Rádio por humor". - the Opus note claimed every build environment has cmake. It is installed explicitly on the five Linux workflows and comes with the Windows and macOS runner images; the Flatpak SDK is the one place it is taken on trust, and nothing in CI builds that manifest. One declined: gating the new Settings toggle on the hook's `resolved` flag. ToggleSwitch has no `disabled` prop, no toggle in this file gates on hydration, and useProfileSetting already serialises writes against an in-flight read -- so a click inside the hydration window persists what the user saw and asked for. Adding a prop to a shared component for a race that resolves correctly is a wider change than it earns.
The Settings toggle now waits for its hydration, which I declined last pass on a claim that was simply wrong -- I said no toggle in that file gates on hydration, and three do. The file's own ToggleSwitch takes a `disabled` prop for exactly this. set_shuffle_mode reorders before it records. The review offered two remedies for the same inconsistency -- mirror earlier, or roll the write back when the reorder fails -- and both compensate for an order that only needed inverting: apply_shuffle_mode takes the mode as an argument and reads nothing persisted, so a failed reorder now leaves the persisted mode, the queue and the engine all still describing the state the user was already in, with nothing to undo. AlbumCandidate's FromRow derive follows the crate convention and sits behind the backend features like every other row type. And cmake gets a guarded step on the macOS and Windows release jobs. Measured rather than assumed: a current Mac with Xcode installed has neither cmake nor Homebrew, so "it is a Mac" guarantees nothing, and the release is the one path that must not fail. CONTRIBUTING says so for all three platforms now, including that MSVC fails with C1083 when the build path is long. Three declined, each verified against the code: - the MPD `random` path does not need an Off-to-Tracks fallback: read_shuffle_grouping_preference never returns Off, it maps it internally; - there is still no duplicate shuffle read at the profile-load site -- no `shuffle` binding exists anywhere in that block; - the mood radio's per-artist album cap can shorten a radio, but the track-based path has had exactly that property for as long as it has existed, and reporting a "partial" result to the frontend is a feature neither path offers.
It picks its work with WHERE l.file_hash IS NULL, so a track holding one of those rows looks done to it. Teaching it otherwise means spelling the recogniser a second time in SQL, and two spellings of one predicate drift -- so the asymmetry is deliberate, and now says so rather than looking like an oversight. Opening the panel is what heals the row, which is the moment the wrong text would have been read.
A mood radio in album mode returned an error when no whole record fit
the mood. That is the wrong answer to a "play something now" button:
album mode is a preference, not a contract, and a library whose records
are mostly unanalysed can satisfy a mood track by track while no album
qualifies. It falls through to the track selection now -- and when
there is genuinely nothing, the message the user sees is the one that
applies ("no tracks match this mood") instead of blaming the albums.
And a documentation block had come adrift: an insertion anchored
between a doc comment and its own #[test] attribute, which silently
handed the first test's documentation to the second. It compiles
either way, which is why nothing caught it. Second time I have made
exactly this mistake.
Three declined:
- there is still no shuffle value in scope to reuse at the profile-load
site -- fourth pass this has been raised, and the block contains no
such binding;
- the Relaxed store on replaygain_mode_bits is what its sibling setter
does, field for field; the Release ordering belongs to the boot
restore, where this write also uses it;
- guarding the new ReplayGain mode against a hydration race would
single it out from the four fields beside it, none of which are
guarded. The race is real and uniform across all five, and fixing one
would read as if the others had been left deliberately.
player_get_state resolved the mode for the snapshot it returns and then read the same row again to mirror it into the engine. One read now feeds both, which is not only cheaper: two reads can straddle a change, and the mirror the decoder trusts should describe the same state the UI was just told about. Raised on five consecutive local review passes and declined on four of them, each time on a search window that happened to exclude the binding. It sits about two hundred lines above the call, inside the same function. The reviewer was right and my verification was not.
The ReplayGain mode rollback is conditional now, the way handleSetDsdPrecision's already was: two quick changes where the first fails after the second succeeds would otherwise have restored the value from before both of them. And the Opus decoder frees its state if creation ever reports an error alongside a non-null pointer. libopus documents a null return on failure, so the pairing should not occur -- freeing it anyway keeps ownership a rule this file enforces rather than one it inherits. One declined, on the count rather than the merit: `let _ = sqlx::query` on a persisted player setting appears eighteen times in this file, and the new command is the eighteenth. The pattern does hide a write failure from the UI, which is worth fixing -- but for all of them at once, in a change that is about that, not by making one command behave differently from every sibling around it.
The Opus decoder invalidated a documented limitation and nobody noticed. The playback docs said an Opus file with a non-zero header output gain was unsupported -- the header value neither read nor compensated for -- because until #581 there was no decoder to apply it with. There is now: libopus applies it while producing the samples, and R128_TRACK_GAIN is defined relative to those samples, so the scanner's tag rides on top rather than competing. Those files are handled now, and the paragraph saying otherwise has been rewritten. The new Settings control follows the hydration convention after all. I declined this twice on the grounds that the four ReplayGain fields beside it are ungated -- which had it backwards: those are older, and audioSettingsTouched was introduced two days ago in the device batch, for exactly this. A slow settings read can no longer land on a choice the user has already made. Daily Mix album mode picks by relevance rather than by whatever order SQLite produced. The track side has always ordered by play count; the album side took an arbitrary 60 records by the same artists, so a deep cut was as likely as the album the mix is built around. Counted once in a grouped join rather than a correlated subquery -- my first attempt at this re-counted play_event for every track the outer scan touched. And the decoder stopped cloning its codec parameters, and with them the whole header, on every seek. One declined: replacing the two SQLite functions in album_playback with a repository trait. The crate does have that convention, for domain CRUD -- but its playback-adjacent materialisers (smart_playlists's generator and on_repeat) take a &SqlitePool directly behind the same feature gate, and mod.rs says so in as many words. A trait over two functions with one implementation is an abstraction with nothing on the other side of it.
… binds Both asserted the limiter caps the gain, with a pre-amp too small for it to be consulted: the record's -7 dB album gain plus 12 dB lands at 5 dB, under the 6.02 dB a 0.5 peak leaves. The code returned 5 dB, which is right; the expectation was wrong. Neither had ever run -- the app crate's tests do not execute on Windows (STATUS_ENTRYPOINT_NOT_FOUND from the Tauri DLLs), so they went from written to green-by-assumption. Fedora and macOS both caught them, with the same two failures out of 596 and 584.
The cmake step would have failed the Windows release right after succeeding at its job: GITHUB_PATH only reaches later steps, so the `cmake --version` closing the step could not have seen a freshly installed cmake. It exports to the running shell as well now. The ReplayGain mode handler captures the active profile at click time, like every other audio setting around it, so a profile switch while the write is in flight cannot let a stale failure roll back into someone else's settings. That move needed `activeProfileIdRef` declared above its first user, and the reason is worth recording: referencing it earlier in the component made `react-hooks/immutability` flag the ref's *existing* assignment, sixty lines away and untouched. Same family as the set-state-in-effect surprise from the device batch -- these rules reason about the whole component, so an edit can change the verdict on code it never touched. One declined: giving description-derived lyrics their own `LyricsSource`. It would be the honest classification, but `lyrics.source` is CHECK-constrained to four values, so a fifth means rebuilding a shared cache table for a naming nicety. The consequence is one absurd edge -- a genuine USLT tag that really does open with a YouTube credit gets re-read from the file on each panel open -- and it is now written down next to the predicate rather than left to be rediscovered.
InstaZDLL
added
scope: frontend
📝 WalkthroughWalkthroughCette PR ajoute le décodage Opus, le ReplayGain par album, trois modes de shuffle et la génération de sessions par albums. Elle étend aussi la résolution des paroles, les workflows de compilation, la documentation et les traductions. ChangesPipeline audio Opus
ReplayGain contextualisé
Shuffle par modes
Lecture par albums
Résolution des paroles
Priority: ➖ Normal Estimated code review effort: 5 (Critical) | ~90 minutes Change: Feature · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant Interface as SettingsView
participant Backend as player_set_replaygain_mode
participant Etat as SharedPlayback
participant Decodeur as AudioDecoder
Interface->>Backend: sélectionner le mode ReplayGain
Backend->>Etat: enregistrer le mode actif
Backend-->>Interface: retourner le résultat
Decodeur->>Etat: lire le mode et le contexte d’écoute
Etat-->>Decodeur: fournir GainMode et Listening
Decodeur->>Decodeur: calculer le gain effectif
Merge Risk: 🟡 Moderate · up to Whole-album sessions can use per-track rather than album-level loudness normalization. This leaves the album-playback behavior incomplete and should be addressed before merge. 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Out of Scope Changes checkExplanation
Full details: Docstring CoverageExplanation Docstring coverage is 78.80% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 184 functions across 24 files. (1 skipped: 1 unsupported.)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@docs/features/integrations.md`:
- Around line 156-158: Update the cache-repair description near the
affected-track note to state that the invalid cached row is automatically
removed and repaired on the next fetch_lyrics call, without requiring manual
action. Preserve the existing explanation that fetch_lyrics can fall back to the
sidecar and useTrackLyrics triggers the fetch.
- Line 163: Update the LRCLIB documentation paragraph to refer to tier 6, not
tier 5, when describing the earlier /api/get request; leave the remaining
explanation unchanged.
In `@src-tauri/crates/app/src/audio/state.rs`:
- Line 511: Transporter un indicateur explicite de session album jusqu’à
AudioCmd lorsque MoodRadioGrid sélectionne mood_radio_by_album, afin que
SharedPlayback::listening_to classe la session en Listening::ToAnAlbum malgré
source_type égal à « radio ». Préserver le contexte existant des sessions Mood
Radio par piste et le comportement de ShuffleMode::Off.
In `@src-tauri/crates/app/src/commands/lyrics.rs`:
- Around line 725-728: Update run_prefetch to read the local description with
read_description_lyrics after sidecar loading and before querying network
providers, so a valid description-only track populates the cache and remains
available to fetch_lyrics. Add a prefetch test covering a track whose lyrics
come only from its description.
In `@src-tauri/crates/app/src/commands/mood_radio.rs`:
- Line 213: Rendre le champ d’artiste agrégé utilisé par start_mood_radio
optionnel afin que MIN(t.primary_artist) puisse être NULL sans échec de
décodage. Conserver le plafond par artiste en utilisant la clé optionnelle, et
préserver le repli par pistes lorsque toutes les pistes d’un album n’ont pas
d’artiste.
In `@src-tauri/crates/core/src/smart_playlists/generator.rs`:
- Around line 247-259: Update the empty-candidate branch in the smart playlist
generation flow to call pick_tracks_for_artists before delete_existing_slot,
then apply the existing deterministic shuffle and cap the fallback to
TRACKS_PER_MIX. Continue with the track-based result when available, and only
clear the slot when both album selection and track fallback are empty.
- Around line 220-246: Persist the album_mode state when generating the Daily
Mix rule, then read that flag when resolving the mix source so only album-mode
mixes receive album context for ReplayGain ordering and album gain/peak
handling. Keep track-based mixes using the existing playlist context and ensure
the persisted value survives rule reloads.
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The one that was a regression: run_prefetch keeps its own copy of the local waterfall, and lost the description tier when that moved out of read_embedded_lyrics. I updated try_local_lyrics and never looked for a second caller, so a description-only track stopped being filled locally and went to the network instead. Both paths now go through one helper that holds the order. A mood radio could be killed by a NULL. track.primary_artist is nullable -- ON DELETE SET NULL -- so an album whose tracks have all lost theirs aggregates to NULL, which failed to decode into an i64 and took the whole query down with it. Records with no artist now share one bucket for the per-artist cap, which is the conservative reading and keeps a pile of untagged rips from filling the radio between them. The Daily Mix falls back to tracks when no record fits a bucket, which is what Mood Radio already did after the fourth review pass -- leaving them different meant one generator treated the setting as a preference and the other as a contract, and the comment explaining the Daily Mix behaviour contradicted its sibling. And two documentation lines that the code had moved past: the lyrics cache repairs itself now rather than needing a manual refetch, and LRCLIB is tier 6 since the description tier was numbered in. Two findings are deferred to #647 rather than declined: an album-mode Mood Radio or Daily Mix plays whole records in order but is enqueued as 'radio' or 'playlist', so automatic ReplayGain reads it as a track session. Real, and the two features in this PR genuinely fail to meet there -- but the signal does not exist yet, and adding it means a new flag through the command layer, the queue and the decoder, plus an album_mode boolean persisted in smart_rules so a mix generated today still says so when it is played next month. That is its own change.
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@coderabbitai Seven findings: five fixed in The prefetch losing the description tier — founded, and it was a regression, not a gap. You are right that
The Daily Mix fallback — founded on consistency, and the inconsistency was mine. Mood Radio gained exactly this fallback on an earlier review pass, with the argument that album mode is a preference rather than a contract. Leaving the Daily Mix to clear its slot meant the same setting behaved two ways, and the comment explaining why the Daily Mix did not fall back was contradicting its sibling three files away. Both fall back now. Both documentation lines — founded. The cache repairs itself since a later pass, so the note telling users to refetch was describing the version before that; and LRCLIB became tier 6 when the description tier was numbered in, which I fixed in two places and missed in two more. The album-session ReplayGain context — deferred to #647, not declined. You have identified something real, and it is the one place where the two features in this PR fail to meet: an album-mode Mood Radio or Daily Mix plays whole records in disc order and is enqueued as The reason it is not here is that the signal does not exist. For the record on process: this branch went through nine local review passes before it was pushed — 31 findings founded, 12 declined. Three of those declines were mine to correct on a later pass, which is the honest argument for running the passes rather than for trusting the first answer. |
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only still-valid issues, skip the rest with a brief reason, keep changes
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Inline comments:
In `@src-tauri/crates/app/src/commands/mood_radio.rs`:
- Around line 210-220: Update the album-mode Mood Radio queueing flow around the
Row query and selected-track enqueue logic to carry an album-session context,
ensuring queued tracks use the album source/listening type rather than always
radio. Preserve radio behavior for non-album sessions and make album ReplayGain
apply under the default sequential shuffle mode without requiring album shuffle.
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docs/features/integrations.mdsrc-tauri/crates/app/src/commands/lyrics.rssrc-tauri/crates/app/src/commands/mood_radio.rssrc-tauri/crates/core/src/smart_playlists/generator.rs
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| /// is the budgeting unit, and it has to match what actually | ||
| /// gets queued. | ||
| track_count: i64, | ||
| /// `track.primary_artist` is nullable (`ON DELETE SET NULL`), | ||
| /// so an album whose tracks have all lost theirs aggregates to | ||
| /// NULL. Decoding that into an `i64` fails the whole query, | ||
| /// which would take the radio down with it. | ||
| primary_artist: Option<i64>, | ||
| } | ||
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| let rows: Vec<Row> = sqlx::query_as::<_, Row>( |
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🎯 Functional Correctness | 🟠 Major | 🏗️ Heavy lift
Album-mode Mood Radio still queues every selected track with source type radio. With the default sequential shuffle mode, that maps to Listening::ToATrack, so ReplayGain Auto ignores the album gain and album peak even though this path now plays intact albums. Carry an album-session context through this queueing path so these sessions use album ReplayGain without requiring users to enable album shuffle.
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In `@src-tauri/crates/app/src/commands/mood_radio.rs` around lines 210 - 220,
Update the album-mode Mood Radio queueing flow around the Row query and
selected-track enqueue logic to carry an album-session context, ensuring queued
tracks use the album source/listening type rather than always radio. Preserve
radio behavior for non-album sessions and make album ReplayGain apply under the
default sequential shuffle mode without requiring album shuffle.
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Tip For best results, initiate chat on the files or code changes. 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '=== commit ==='
git show --stat --oneline c3fb3f8f
git show --format=fuller --find-renames --find-copies -- \
src-tauri/crates/app/src/commands/lyrics.rs \
src-tauri/crates/app/src/commands/mood_radio.rs \
src-tauri/crates/core/src/smart_playlists/generator.rs \
docs/features/integrations.md \
docs/features/playback.md \
c3fb3f8f 2>/dev/null || true
echo '=== relevant current symbols ==='
ast-grep outline src-tauri/crates/app/src/commands/lyrics.rs --items all --match 'try_local_lyrics|run_prefetch|read_description_lyrics' || true
ast-grep outline src-tauri/crates/app/src/commands/mood_radio.rs --items all --match 'Album|album|fallback' || true
ast-grep outline src-tauri/crates/core/src/smart_playlists/generator.rs --items all --match 'Album|album|fallback' || true
echo '=== current relevant references ==='
rg -n -C 5 'try_local_lyrics|run_prefetch|read_description_lyrics|read_embedded_lyrics' src-tauri/crates/app/src/commands/lyrics.rs
rg -n -C 5 'primary_artist|fallback|album_mode' src-tauri/crates/app/src/commands/mood_radio.rs src-tauri/crates/core/src/smart_playlists/generator.rs
rg -n -C 3 'tier|LRCLIB|refetch|cache' docs/features/integrations.md docs/features/playback.md
echo '=== follow-up issue ==='
gh issue view 647 --repo InstaZDLL/WaveFlow --json number,title,state,body,urlLength of output: 90671
Le défaut fonctionnel de prefetch est corrigé. Il reste un détail de maintenance : Le report de ReplayGain vers 🐇 ✏️ Learnings added
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@coderabbitai Same subject as the earlier finding, and it stays in #647 rather than landing here. The reasoning is worth restating with what checking it again turned up, because you are right about the behaviour. Confirmed, again. Two reasons it is not a narrow fix, and the second is new since last time. The clearing is harder than the setting. A per-queue "this session is album-ordered" flag has to be written on every path that replaces the queue, or a stale one hands album gain to the next unrelated playlist — a silent audio defect, which is worse than the one being fixed. I had assumed And doing Mood Radio alone would re-create exactly the inconsistency the previous review round asked me to remove. Those two generators are driven by one setting, and this same PR just made their empty-result behaviour match after you pointed out they disagreed. Giving album context to the radio and not to the Daily Mix would put them straight back to answering the same preference two different ways — and the Daily Mix cannot be fixed the same way, because its session outlives its generation: the mix is a stored playlist, played weeks later through the ordinary playlist path, so the flag has to be persisted in So it is one change covering both, spanning the command layer, the queue, the decoder and the rule schema — not two independent ones. #647 carries the shape, the traps, and now the What ships here is honest about itself: album mode picks and orders whole records, and ReplayGain treats the session the way it treats any radio. Nothing claims otherwise, and the follow-up says exactly what is missing. |
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Je confirme que le défaut reste réel, mais que Le risque principal est bien le contexte persistant obsolète. Toute opération qui remplace ou initialise une file doit définir ou effacer ce contexte. Cela inclut Daily Mix exige aussi une donnée persistée dans Je laisse donc ce point ouvert dans 🐇 ✏️ Learnings added
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Lot C of the v1.8.0 milestone: the three issues about how a track gets played rather than how it gets written. They turned out to share a subject — the album as a unit rather than a bag of tracks — which is why two of them reinforce each other rather than just sharing a branch.
Closes #587. Closes #618. Closes #581.
Album gain, chosen from context rather than from a setting (#587)
ReplayGain levels every track against every other one. That is right when a song comes up shuffled between two unrelated things, and wrong on a record mastered as a whole: the hushed interlude gets pushed up to meet the single, flattening exactly what the mastering engineer put there.
The feature looked expensive because it sounds like it touches the queue. It does not.
queue_item.source_typealready travels all the way to the decoder, sitting onActiveStreamright next to the gain — so "is this track playing as part of its album" was a field that had already arrived where the answer is needed. The default is therefore automatic: album gain while a record plays through, track gain otherwise, with nothing for the listener to manage. Album shuffle counts as a record playing through, which is the first place the two issues meet.trackandalbumcan still be forced.The clipping cap switches with the gain, which is the part that is easy to get wrong and the one the issue flagged. In album mode it caps by the album peak — the same number for every track on the record, so the cap is uniform. Capping each track by its own peak would pull tracks down according to their own loudest sample, re-introducing precisely the per-track variation album mode exists to remove.
Album numbers are tag-only, because our analysis pass measures one track at a time and has no notion of a record. A file without them falls back to its track gain, since album mode would otherwise do nothing at all on a half-tagged library. The peak falls back with it, and that one is a deliberate trade in the other direction: an uneven cap is cosmetic, and the cap only ever binds where the alternative is audible clipping.
Shuffle whole records, and build sessions out of them (#618)
Shuffle becomes three-way: off, tracks, albums. In album mode only the order of the records is randomised — inside each one the tracks are put back into disc and track order, so a record that arrived in the queue scrambled still plays the way it was pressed. The record you are in carries on rather than restarting: the current track keeps position 0, the rest of its album follows, and the tracks before it come round at the end. A track with no album is its own record, so loose files still shuffle like tracks instead of being welded into one block that always plays together.
Persisted as the existing on/off switch crossed with a grouping, rather than as one three-valued key.
player.shufflestays authoritative for "is shuffle on" — it is what MPD'srandommaps onto and what an older build reads — the grouping is remembered while shuffle is off so a preference for whole records survives an off/on, and a profile that predates this needs no migration. MPD'srandom 1therefore turns shuffle on without forcing tracks: a remote that cannot express the grouping should not quietly undo it.Mood Radio and the Daily Mix get the same treatment behind one setting, because it is one preference. A record fits a mood when most of what we have measured of it sits inside the tempo window — a fraction rather than the median the issue suggested, since a median says nothing about spread: a record half ambient and half thrash lands in the middle and would be offered for a mood neither of its halves belongs to. The cap is then spent in whole albums; truncating at 40 or 50 tracks would end the session halfway through a record, which is the single thing this exists to prevent.
Album mode stays a preference rather than a contract: when no whole record fits a mood, the radio falls through to picking tracks rather than refusing to play. A library whose records are mostly unanalysed can satisfy a mood track by track while no album qualifies, and a "play something now" button should not answer with an error.
Two things found in the queue on the way past. Reordering wrote every row back as
source_type = 'manual', which threw away the source aplay_eventis attributed to and the boundaryfill_queueuses to tell queued-up "play next" items from the source queue around them — so shuffling an album silently cost both, and unshuffling did not bring them back. Sources now survive a reorder, one per occurrence, so a queue holding the same track twice hands each copy back its own. That same column is what lets automatic ReplayGain tell a record playing through from a shuffled playlist, which is the second place the two issues meet.Opus (#581)
Opus was not playable, and the scanner refused the extension so the files were not even indexed — while the desktop entry and the AppStream metadata have been claiming
audio/opusall along.symphonia was never the problem for the container: its Ogg reader ships a complete Opus mapper, so tags and durations already came out right. The missing piece was the decoder, and
symphonia-codec-opusdoes not exist. This one is libopus 1.6.1 throughopusic-sys.Why a C binding. Two pure-Rust decoders were measured against a libopus reference rather than assessed from their READMEs, and both were rejected for opposite reasons.
libopus-rscovers CELT only and refuses honestly outside that range — too narrow to ship, but it fails loudly.opus-rsdecodes everything and never returns an error, including on the files it gets wrong: a 48 kb/s stereo file that is 94 % CELT and 6 % hybrid scores 30 dB. That is silent audio corruption with nothing for the player to catch. Writing our own is not on the table — for scale, the whole DSD pipeline cost 1 688 lines without a single bit of entropy decoding.Static on every platform, which is a packaging decision rather than a technical one: the Linux packages repackage the release binary rather than building from source, so a system libopus would mean a runtime dependency added to three packaging manifests and a library bundled into the AppImage, to gain nothing. The cost is
cmakeat build time — see the validation note below, because that turned out not to be free.The pre-skip is the part that was nearly missed. Every Opus stream opens with encoder priming that must never be played. The obvious reading is that the reader handles it — it sets
Track::delayfromOpusHeadand hands each packet atrim_start, which is exactly how the Vorbis decoder next door disposes of its own priming. That reading is wrong: the Opus packet parser insymphonia-format-ogg0.6.1 reports a discard of zero for every packet, so the trim is always empty. Measured against a real file rather than reasoned about — a 3-second encode decoded to 144 312 frames instead of 144 000, the difference being precisely the 312-frame priming. The decoder now counts it, credits whatever the reader did report against what is owed so a future upstream fix cannot make it drop twice, and does not re-apply it after a seek, where there is nothing to drop and doing so would eat real audio.RFC 7845 also suggests decoding ~80 ms before a seek point and discarding it so the decoder has converged. We deliberately do not, and the reason is written where the decision is: that is audio the listener asked for, and the convergence artefact is brief and bounded where the loss would not be.
One codec registry for the whole app. Playback, the analysis pass and the scanner's probe each reached for
symphonia::default::get_codecs(). That was harmless only while the app shipped no decoder of its own; now it is not. The three have to agree on what this build can decode, because that disagreement is exactly how an unplayable track gets into a library — the single thingAUDIO_EXTENSIONSexists to prevent. Written up as an invariant.Also here
A sidecar the user placed beats a description we guessed at. Reported on discussion #519 by the same person who asked for Opus, and not previously tracked. A
.m4apulled withyt-dlpcarries the auto-generated "Provided to YouTube by…" credit in itsdescriptiontag; that blurb is comfortably more than the three lines which were the whole test for treating a description as lyrics, so it won — and because the embedded tier ran before the sidecar, the.lrcplaced next to the file was never read at all. Other players showed the lyrics; we showed the credit.Two things were wrong at once. A description field is not a lyrics field, and reading it as one is a guess; and the guess outranked an explicit statement, which is what made it invisible. The tier survives, because some rips really do put lyrics there, but it moves behind the sidecar and refuses that one blurb — by a recogniser that stays deliberately narrow and only looks near the top of the text, because a false positive here costs someone their real lyrics.
The wrong text was also cached, and the waterfall never refetches once a row exists — so correcting the reader alone would have reached only tracks nobody had opened yet, which does not include the person who reported it. A cached
embeddedrow that the same recogniser identifies as a service credit is dropped on read and re-resolved. Narrow, because the row is provably not lyrics, and governed by one predicate so what we refuse to store and what we refuse to serve cannot drift apart.Validation
cargo fmt --checkandclippy -D warningsat zero across the workspace on all three platforms, and the full suite green on the two that can run it: 900 tests on macOS 26.6 and 912 on Fedora 44. Windows runs the core crate only — the app crate's tests do not execute there (STATUS_ENTRYPOINT_NOT_FOUNDfrom the Tauri DLLs), which is exactly how two of the new ReplayGain tests went from written to green-by-assumption; both platforms caught them, with the same two failures, and the defect was in the expectation rather than the code.macOS matters more than usual here. No CI job compiles it, and this PR adds a cmake-built C dependency to every platform, so it is the first time libopus has been built there at all.
Nine local review passes before the first push to this repository: 31 founded findings fixed, 12 declined with the reason recorded. Three of those declines were mine to correct — a search window that excluded the binding it was looking for, a consistency argument that had the ages of two conventions backwards, and a first reading of symphonia's pre-skip handling that the measurement then contradicted. The trend across passes was 8 → 6 → 4 → 2 → 1 → 2 → 4 → 2 → 0; the bump at seven is the interesting one, and it is the same shape three times over: a fix moved an invariant and what depended on it did not announce itself.
Opus was checked against real files rather than only against unit tests — encoded with
ffmpeg -c:a libopus, probed and decoded through the app's own registry, frame counts compared against the expected duration. That is what turned up the pre-skip.cmake is a build dependency now, and it is declared rather than assumed. The five Linux workflows install it; the macOS and Windows release jobs check for it and install it if the runner image ever stops shipping it; CONTRIBUTING lists it for all three platforms. That last part is not theoretical: a current Mac with Xcode installed turned out to have neither cmake nor Homebrew, so a contributor on a clean macOS cannot build this without installing one. The one place it is still taken on trust is the Flatpak SDK — no CI job builds that manifest — and the manifest now says so at the line that assumes it.
Two things found on the way, recorded in the commits for whoever hits them next. Running
generate-sources.shon Windows corrupts the Flatpak output in a way CI does not catch: the upstream generator builds paths withos.path.join, so git-sourced entries come out with backslash separators inside shell commands that run under Linux in the Flathub sandbox, andcheck-sources.pyonly verifies that every crate is covered, not that the paths are shaped like Linux paths. And MSVC fails the libopus build withC1083: Cannot open compiler generated filewhen the build directory path is long — a checkout nested deep under a temp directory is enough to trigger it.Summary by CodeRabbit
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