# Changelog

All notable changes to JellyTau are documented here.

Entries are grouped by the capability they change, not by commit. Requirement
IDs in parentheses point at [docs/requirements.md](docs/requirements.md); the
generated trace matrix lives in [docs/traceability.md](docs/traceability.md).

## v0.4.8

### 🐛 Fixes

- **Video with an undecodable soundtrack now transcodes instead of playing
  silent.** Advertising a webview-shaped profile (v0.4.7) turned out not to be
  enough: Jellyfin 10.11.5 enforces a direct-play profile's container and video
  codec but ignores its audio codec, offering an E-AC-3 track for direct play
  against a profile listing only AAC — and no `CodecProfile` or channel limit
  changes that. The client now checks the track it would actually be served
  against what its renderer can decode and forces the h264/AAC HLS transcode
  when it cannot, rather than trusting the negotiation.
  (UR-004 → DR-149)

## v0.4.7

### 🐛 Fixes

- **Video plays with sound on devices that ship a Dolby decoder.** The audio
  codec list sent to Jellyfin came from `MediaCodecList`, which describes
  ExoPlayer — but video does not play through ExoPlayer: it renders in the
  webview `<video>` element, which decodes far less. A phone whose vendor
  licenses Dolby therefore advertised `ac3`/`eac3`, got a direct play, and
  showed full picture with no audio, while a leaner device claimed neither
  codec, received an AAC transcode, and played the same file correctly. The
  video direct-play profile is now narrowed to what the webview can decode;
  audio-only playback is genuinely the native player's and keeps the full list,
  so music is not transcoded needlessly.
  (UR-004 → DR-148)

## v0.4.1

### 🐛 Fixes

- **The lockscreen pause works while a video's audio plays in the background.**
  The handoff starts native audio and only then tears the WebView `<video>`
  down — and that teardown fires a DOM `pause` the frontend reports like any
  other, which left the controller believing webview media was still the
  player. Transport stayed aimed at it: pressing pause on the lockscreen sent a
  control command to a `<video>` that no longer existed while the native player
  carried on, and the element's parting position report dragged the displayed
  time backwards. A handoff is now tracked explicitly, so it hands transport to
  the native backend and ignores what the dying element still reports. A pause
  made from the lockscreen also survives the return to the app, instead of being
  undone by the play state captured when the handoff began.
  (UR-040, UR-005 → DR-052, DR-097)

## v0.4.0

### ✨ Features

- **Favourites, across libraries.** A `/library/favorites` page renders
  favourites from every library with All / Movies / Shows / Music scope tabs,
  reusing the standard grid so card shape still follows the media — a mixed All
  tab reads as posters, squares and thumbnails side by side. Home carries
  favourite rows below Recently Added, and a row with no items does not render
  at all, so a fresh install shows no empty rows. Server favourite state is
  mirrored into the local database as results are cached, so offline browsing
  sees the same favourites as the server; a toggle made offline is never
  overwritten by a stale server value before it has been pushed.
  (UR-067, UR-069 → DR-113, DR-114, DR-115, DR-117, DR-118)

- **Search answers from the local index.** The instant leg read only downloaded
  items, so with no downloads it returned nothing and every keystroke fell
  through to a full `Recursive=true` server query. It now reads the whole synced
  catalog through the same availability CTE `get_items` uses, gated on the same
  `include_catalog_browse` flag, so search and browse cannot diverge. The index
  also gained MusicArtist, Playlist and People — the very groups search sorts
  results into. Re-indexing moved from a frontend startup call to a Rust
  background task with a 6h TTL, so a long session no longer searches a stale
  catalog. (UR-065 → DR-108, DR-110, DR-111)

### 🐛 Fixes

- **Playback no longer restarts an episode at random on a flaky connection.**
  Background audio-only playback of a video streams a progressive mp3 transcode
  over plain HTTP, which is chunked and so declares no length: when the
  connection dropped mid-episode, ExoPlayer saw end-of-input and reported
  `STATE_ENDED`, indistinguishable from the real end. The app ran its
  end-of-episode logic mid-episode and playback parked in `STATE_ENDED`, where
  the next play intent from the lockscreen, notification or a Bluetooth
  reconnect seeks an ended player to position 0 — surfacing as "the episode
  randomly restarted". The item's runtime is now what decides: an end reported
  well short of it re-opens the stream where it stopped. (UR-040 → DR-129)

- **A network hiccup no longer kills playback outright.** Music and video
  declare a length, so a cut connection reaches them as an *error* rather than a
  phantom end — and every error stopped the player. A recoverable error now gets
  one bounded attempt at re-opening the stream where it stopped, with a growing
  backoff, leaving the rest of the queue intact. On Linux, MPV additionally
  reconnects inside the demuxer so ordinary blips never surface at all, and
  `EndFile(ERROR)` — previously a bare log line that left playback halted while
  the UI still showed "playing" — is now reported and recovered.
  (UR-004, UR-040 → DR-129, DR-130)

- **The player no longer reads 0:00 as a track ends on Linux.** MPV exposes
  `time-pos` and `duration` as properties of the *loaded* file, so at EOF it
  unloads and both stop resolving — reporting zero at exactly the moment
  end-of-file handling asks where playback reached. The last reading seen while
  media was loaded is now kept and used as the fallback. (UR-005 → DR-130)

- **Server-side deletions propagate to the local catalog.** `DELETE FROM items`
  existed nowhere, so items removed on the server lingered locally forever. A
  post-crawl mark-and-sweep now removes them, scoped to crawled types, skipping
  downloaded items, and refusing to run after a partial crawl. Separately,
  `items_fts` grew a full duplicate index on every catalog pass; it is now a
  real upsert, with a migration rebuilding existing indexes. (DR-110)

- **Android system bars and display cutout are handled correctly.** (UR-066)

## v0.2.0

### ✨ Features

- **Audio settings now work on Android.** The equalizer, volume normalization
  and gapless playback controls in Settings › Audio previously rendered on
  Android and did nothing — `ExoPlayerBackend` was the only backend that never
  implemented `set_audio_settings`, and the trait's default silently reported
  success while applying nothing. All three now take effect:
  - **Equalizer** — the canonical 10-band ISO curve is resampled onto whatever
    bands the device's equalizer actually exposes (commonly 5), by nearest
    centre frequency.
  - **Volume normalization** — via `LoudnessEnhancer`. Note this is a gain
    stage, not a true EBU R128 normalizer like the Linux `dynaudnorm` path, so
    it approximates rather than matches Linux behaviour.
  - **Gapless playback** — honours the setting via `pauseAtEndOfMediaItems`
    (ExoPlayer is gapless by default, so this disables it when you turn it off).

  The effects re-attach automatically when ExoPlayer rebuilds its audio sink on
  a format change, so the equalizer no longer stops applying part-way through a
  queue. (UR-027, UR-032, UR-033 → DR-030, DR-035, DR-036, IR-004)

  ⚠️ **Not yet verified on a physical device.** `AudioEffect` availability and
  band layouts vary by device and OEM ROM; where an effect is unavailable it is
  logged and skipped rather than crashing playback.

### 📋 Documentation

- **Playback backend unification investigation.** Six new specs in
  [docs/specs/](docs/specs/) record why the playback backends cannot be unified
  onto a single engine: every candidate (mpv, GStreamer, libVLC) fails the same
  webview-compositing constraint, because WebKitGTK/WebView2/Android WebView each
  own their compositor surface and native video cannot interleave with HTML.
  Audio *can* unify; video cannot. Also specifies the Android native-video spike,
  a Windows native audio backend, and the `libmpv2` migration.

### 🐛 Corrected requirement statuses

These were documented as working and were not. No behaviour changed — the docs
were wrong.

- **Crossfade (UR-031, DR-034) was marked "Done (Linux only)". It is implemented
  nowhere**, and is architecturally blocked on mpv: its audio chain is
  single-stream, and FFmpeg's `acrossfade` requires two inputs. Real crossfade
  would need two libmpv instances.
- The platform parity matrix listed crossfade as a Linux/Android gap (it is
  neither) and omitted the equalizer (which was a genuine gap, now closed).
- `nativeAdapter.ts` cited tauri#10152 as blocking native Android video. That
  issue is a stale feature request; the capability shipped in September 2024.
  What remains unproven is SurfaceView-behind-WebView compositing, now tracked
  by a spec rather than asserted as an upstream blocker.

<!--
  Note: v0.1.3–v0.1.5 have no entries here. Their changes are in the git log
  and docs/traceability.md.
-->

## v0.1.2

### ✨ Features

- **Search results are ordered by how well they match.** A name that *starts*
  with the query now outranks one matching mid-word — typing "parks" finds
  "Parks and Recreation" before "Sparks of Love" — and at equal match quality a
  container outranks its contents, so a series lands above its own episodes.
  Ranking is applied to the instant cached results and to the merged
  cache+server list alike, so the list no longer reshuffles when server results
  arrive. (UR-060, DR-090)
- **Separate Shows, Episodes and People result groups.** The combined "TV Shows"
  group splits into Shows and Episodes so a show never competes with its own
  episodes for a slot, and a new People group means searching an actor's name
  reaches their bio page. Default order is Shows → Episodes → Movies → Songs →
  Albums → Artists → People; a group order saved before the split keeps the
  position it was dragged to. (UR-060, DR-091)

### 🐛 Bug Fixes

- **The library header search bar works on every library page.** It previously
  searched in place and depended on `/library` rendering results inline, so on
  any other `/library/**` route the results were fetched and never shown.
  `/search` is now the single surface that renders results, and the header bar
  hands its query and scope over via the URL. (UR-049, DR-063)
- **Video smaller than the window is scaled up to fit.** Sizing only ever shrank
  oversized media, so a 480p source on a 1080p display played as a small picture
  in the middle of a black frame. The picture now fits whichever axis constrains
  it, in both directions, preserving aspect ratio. (UR-005)

### 📋 Requirements

**Linux:** 64-bit, GLIBC 2.29+
**Android:** 8.0+

## v0.1.1 and earlier

Released before this file existed — see the git history and the release notes on
each tag.