Deluan Quintão 13e96a0e81
fix(lyrics): correct TTML background-vocal cue timing and whitespace (#5672)
* fix(lyrics): correct TTML background-vocal cue timing and whitespace

Two parsing defects surfaced by Apple Music TTML files that mix a main
vocal with an x-bg (background) span group within the same line:

- Cue end-time normalization ran over the whole line's cue list in
  document order. Background cues are stored after the main cues but
  interleave earlier on the timeline, so the next-cue clamp collapsed the
  last main cue's end down to its own start (start == end). End times are
  now normalized per agent group, matching how the Subsonic serializer
  already groups cues, so parallel layers no longer corrupt each other.

- Whitespace between elements was treated as significant: pretty-printed
  (indented) TTML injected spurious newlines into the line text, turning
  one line into many. Per TTML2 default xml:space handling (linefeeds
  treat-as-space, whitespace-collapse), formatting whitespace now collapses
  to a single space and hard line breaks come only from <br/>.

The line-level value and per-agent cueLine.value remain the full line text,
as required by the OpenSubsonic songLyrics v2 contract; the per-agent text
is carried in each cueLine's cue[] array.

Two existing tests that encoded the buggy newline-as-break behavior are
corrected; new tests cover whitespace collapse, <br/> preservation, and
interleaved background cue timing.

* fix(lyrics): only collapse XML whitespace, preserve other Unicode spaces

Whitespace collapsing used unicode.IsSpace, which matches more than the XML
S production (space, tab, CR, LF): it also folds characters like NBSP and
U+3000 into a regular space, silently altering content. Restrict collapsing
to the four XML whitespace characters so other Unicode spaces pass through
unchanged, and add a regression test. Also clarify the doc comment that
collapsing is applied unconditionally (xml:space="preserve" is not supported).
2026-06-27 10:37:25 -04:00
2026-05-28 22:13:05 -03:00
2026-05-28 22:13:05 -03:00

Navidrome logo

Navidrome Music Server  Tweet

Last Release Build Downloads Docker Pulls Dev Chat Subreddit Contributor Covenant Gurubase

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 instead of the master branch in order to get a stable set of binaries.

Check out our Live 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 or join the discussion in our Subreddit. If you want to contribute to the project in any other way (ui/backend dev, translations, themes), please join the chat in our Discord server.

Installation

See instructions on the project's website

Cloud Hosting

PikaPods has partnered with us to offer you an officially supported, cloud-hosted solution. A share of the revenue helps fund the development of Navidrome at no additional cost for you.

PikaPods

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
  • Compatible with all Subsonic/Madsonic/Airsonic clients
  • Transcoding on the fly. Can be set per user/player. Opus encoding is supported
  • Translated to various languages

Translations

Navidrome uses POEditor for translations, and we are always looking for more contributors

Documentation

All documentation can be found in the project's website: https://www.navidrome.org/docs. Here are some useful direct links:

Screenshots

Languages
Go 81.8%
JavaScript 15.2%
Rust 2.3%
Makefile 0.2%
Shell 0.2%
Other 0.2%