navidrome/README.md
Yuuta 3a14faa033
feat(subsonic): add structured sidecar lyrics support with OpenSubsonic v2 karaoke cues and agent layers (#5076)
Expand backend lyrics support with richer sidecar formats and upgrade the
OpenSubsonic songLyrics implementation to the version 2 structured karaoke
contract, while preserving version 1 behavior by default.

Sidecar formats and parsing:
- Add a TTML parser (core/lyrics/ttml.go): clock time, offset time, bare
  decimal seconds, nested timing contexts, and token-level <span> timing for
  word/syllable karaoke. Parses Apple Music-style metadata tracks (translation
  and pronunciation/transliteration) and agent metadata into per-track agents[]
  plus per-cue-line agentId. Hydrates missing line timing from cue timing.
- Add an SRT parser (core/lyrics/srt.go).
- Add a LRCLIB Lyricsfile (.yaml/.yml) parser (model/lyricsfile.go): maps
  per-word lines[].words[] to cues with inclusive UTF-8 byte offsets and
  attributes overlapping lines to synthetic voice agents so parallel vocals
  split correctly in the enhanced response.
- Extend LRC parsing for Enhanced LRC inline <mm:ss.xx> word-timing markers.
- Add UTF-8 BOM and UTF-16 LE support for TTML/LRC sidecars.
- Parse the above formats from embedded tags as well as sidecar files.

Source resolution:
- Default lyricspriority is now
  ".ttml,.yaml,.yml,.elrc,.lrc,.srt,.txt,embedded" so the new formats are
  discoverable without manual configuration.
- Preserve configured source priority across duplicate media-file candidates
  instead of only checking the first DB match, so higher-priority sidecar
  lyrics on older duplicates can still win.
- Raise the embedded-lyrics tag maxLength to 1 MB to fit word-timed
  TTML/Enhanced-LRC karaoke for a full song.

OpenSubsonic songLyrics v2:
- Advertise songLyrics versions [1, 2].
- With enhanced=true, getLyricsBySongId may return structuredLyrics.kind
  (main/translation/pronunciation), cueLine[] line-level karaoke groupings,
  cueLine.cue[] timed words/syllables with required UTF-8 byteStart/byteEnd,
  reusable structuredLyrics.agents[], and cueLine.agentId references.
- Without enhanced=true, the response stays v1-compatible: no kind, no cueLine,
  no agents, no non-main tracks; the existing line[] payload is always
  populated so legacy clients keep working.

Contract details:
- cueLine is emitted only for synced lyrics with cue data.
- Within a cueLine, cue.end is normalized all-or-none and overlaps are removed;
  overlaps across separate cueLines remain valid for parallel vocal layers.
- Missing cue end-times are filled from the next cue or the parent line.
- When cueLines share an index, the one whose agent has role "main" is first.
- LyricCue.Value is serialized as XML chardata; cues with nil start are skipped
  rather than serialized as 0.

Refactoring:
- Move pure format parsers into model/ (lyrics.go, lyrics_ttml.go,
  lyrics_srt.go, lyrics_embedded.go, lyricsfile.go) and extract Subsonic
  response building into server/subsonic/lyrics.go.
- Centralize lyric-kind constants and add Lyrics.EffectiveKind/IsMainKind.
- Add gg.Clone helper.

Spec references:
  https://github.com/opensubsonic/open-subsonic-api/discussions/213
  https://github.com/opensubsonic/open-subsonic-api/pull/218 (songLyrics v2)
  https://github.com/opensubsonic/open-subsonic-api/pull/228 (cue byte offsets)
2026-06-19 12:00:58 -04:00

90 lines
6.0 KiB
Markdown

<a href="https://www.navidrome.org"><img src="resources/logo-192x192.png" alt="Navidrome logo" title="navidrome" align="right" height="60px" /></a>
# Navidrome Music Server &nbsp;[![Tweet](https://img.shields.io/twitter/url/http/shields.io.svg?style=social)](https://twitter.com/intent/tweet?text=Tired%20of%20paying%20for%20music%20subscriptions%2C%20and%20not%20finding%20what%20you%20really%20like%3F%20Roll%20your%20own%20streaming%20service%21&url=https://navidrome.org&via=navidrome)
[![Last Release](https://img.shields.io/github/v/release/navidrome/navidrome?logo=github&label=latest&style=flat-square)](https://github.com/navidrome/navidrome/releases)
[![Build](https://img.shields.io/github/actions/workflow/status/navidrome/navidrome/pipeline.yml?branch=master&logo=github&style=flat-square)](https://nightly.link/navidrome/navidrome/workflows/pipeline/master)
[![Downloads](https://img.shields.io/github/downloads/navidrome/navidrome/total?logo=github&style=flat-square)](https://github.com/navidrome/navidrome/releases/latest)
[![Docker Pulls](https://img.shields.io/docker/pulls/deluan/navidrome?logo=docker&label=pulls&style=flat-square)](https://hub.docker.com/r/deluan/navidrome)
[![Dev Chat](https://img.shields.io/discord/671335427726114836?logo=discord&label=discord&style=flat-square)](https://discord.gg/xh7j7yF)
[![Subreddit](https://img.shields.io/reddit/subreddit-subscribers/navidrome?logo=reddit&label=/r/navidrome&style=flat-square)](https://www.reddit.com/r/navidrome/)
[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.0-ff69b4.svg?style=flat-square)](CODE_OF_CONDUCT.md)
[![Gurubase](https://img.shields.io/badge/Gurubase-Ask%20Navidrome%20Guru-006BFF?style=flat-square)](https://gurubase.io/g/navidrome)
Navidrome is an open source web-based music collection server and streamer. It gives you freedom to listen to your
music collection from any browser or mobile device. It's like your personal Spotify!
**Note**: The `master` branch may be in an unstable or even broken state during development.
Please use [releases](https://github.com/navidrome/navidrome/releases) instead of
the `master` branch in order to get a stable set of binaries.
## [Check out our Live Demo!](https://www.navidrome.org/demo/)
__Any feedback is welcome!__ If you need/want a new feature, find a bug or think of any way to improve Navidrome,
please file a [GitHub issue](https://github.com/navidrome/navidrome/issues) or join the discussion in our
[Subreddit](https://www.reddit.com/r/navidrome/). If you want to contribute to the project in any other way
([ui/backend dev](https://www.navidrome.org/docs/developers/),
[translations](https://www.navidrome.org/docs/developers/translations/),
[themes](https://www.navidrome.org/docs/developers/creating-themes)), please join the chat in our
[Discord server](https://discord.gg/xh7j7yF).
## Installation
See instructions on the [project's website](https://www.navidrome.org/docs/installation/)
## Cloud Hosting
[PikaPods](https://www.pikapods.com) has partnered with us to offer you an
[officially supported, cloud-hosted solution](https://www.navidrome.org/docs/installation/managed/#pikapods).
A share of the revenue helps fund the development of Navidrome at no additional cost for you.
[![PikaPods](https://www.pikapods.com/static/run-button.svg)](https://www.pikapods.com/pods?run=navidrome)
## Features
- Handles very **large music collections**
- Streams virtually **any audio format** available
- Reads and uses all your beautifully curated **metadata**
- Great support for **compilations** (Various Artists albums) and **box sets** (multi-disc albums)
- **Multi-user**, each user has their own play counts, playlists, favourites, etc...
- Very **low resource usage**
- **Multi-platform**, runs on macOS, Linux and Windows. **Docker** images are also provided
- Ready to use binaries for all major platforms, including **Raspberry Pi**
- Automatically **monitors your library** for changes, importing new files and reloading new metadata
- Supports **lyrics** from sidecar .ttml, .yaml/.yml Lyricsfile, .elrc, .lrc, .srt, .txt files and embedded TTML, Enhanced LRC, LRC, SRT, and plain-text tags (via `lyricspriority`)
- **Themeable**, modern and responsive **Web interface** based on [Material UI](https://material-ui.com)
- **Compatible** with all Subsonic/Madsonic/Airsonic [clients](https://www.navidrome.org/docs/overview/#apps)
- **Transcoding** on the fly. Can be set per user/player. **Opus encoding is supported**
- Translated to **various languages**
## Translations
Navidrome uses [POEditor](https://poeditor.com/) for translations, and we are always looking
for [more contributors](https://www.navidrome.org/docs/developers/translations/)
<a href="https://poeditor.com/">
<img height="32" src="https://github.com/user-attachments/assets/c19b1d2b-01e1-4682-a007-12356c42147c">
</a>
## Documentation
All documentation can be found in the project's website: https://www.navidrome.org/docs.
Here are some useful direct links:
- [Overview](https://www.navidrome.org/docs/overview/)
- [Installation](https://www.navidrome.org/docs/installation/)
- [Docker](https://www.navidrome.org/docs/installation/docker/)
- [Binaries](https://www.navidrome.org/docs/installation/pre-built-binaries/)
- [Build from source](https://www.navidrome.org/docs/installation/build-from-source/)
- [Development](https://www.navidrome.org/docs/developers/)
- [Subsonic API Compatibility](https://www.navidrome.org/docs/developers/subsonic-api/)
## Screenshots
<p align="left">
<img height="550" src="https://raw.githubusercontent.com/navidrome/navidrome/master/.github/screenshots/ss-mobile-login.png">
<img height="550" src="https://raw.githubusercontent.com/navidrome/navidrome/master/.github/screenshots/ss-mobile-player.png">
<img height="550" src="https://raw.githubusercontent.com/navidrome/navidrome/master/.github/screenshots/ss-mobile-album-view.png">
<img width="550" src="https://raw.githubusercontent.com/navidrome/navidrome/master/.github/screenshots/ss-desktop-player.png">
</p>