Commit Graph
2 Commits
Author SHA1 Message Date
bvandeusenandClaude Opus 5.5 e3aa8629d3 feat(api): deliver loudness gains to every client (M464 #4997)
release / web (push) Successful in 1m44s
release / go (push) Successful in 2m12s
release / govulncheck (push) Successful in 40s
release / android (push) Successful in 5m28s
release / Build signed APK (releases and dev) (push) Successful in 4m42s
release / integration (push) Successful in 15m33s
release / Attach APK to the Release (tag releases only) (push) Skipped
release / Build + push container image (push) Successful in 1m21s
release / Verify release artifacts (tag releases only) (push) Skipped
ReplayGain 2.0 values (gain to -18 LUFS, linear peak) derived from the
stored track and album loudness:

- Web: GET /api/tracks/replay-gain?ids=... (up to 200), a lookup the
  player calls for its queue, rather than a field on every TrackRef
  surface.
- Android: track_gain/track_peak and album_gain/album_peak on the sync
  views, so cached tracks level offline. Storing a measurement logs a
  track change, and an album's values moving logs an album change, both
  before the write (#2704), so caches pick the gains up.
- OpenSubsonic: replayGain on every song (album, getSong, search3,
  starred), as a JSON object and an XML element.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-06 13:54:05 -04:00
bvandeusenandClaude Opus 5.5 f3196b3443 feat(library): measure every track's loudness in the background (M464 #4995)
release / go (push) Failing after 1m18s
release / govulncheck (push) Successful in 35s
release / web (push) Successful in 1m27s
release / android (push) Canceled after 5m47s
release / Build signed APK (releases and dev) (push) Canceled after 4m21s
release / integration (push) Failing after 4m13s
release / Attach APK to the Release (tag releases only) (push) Canceled after 0s
release / Build + push container image (push) Canceled after 0s
release / Verify release artifacts (tag releases only) (push) Canceled after 0s
The first step of loudness normalization: the server measures each track
with ffmpeg's EBU R128 filter (true peak, mono as dual mono) and stores the
integrated loudness, true peak and loudness range in track_loudness
(migration 0065).

It also keeps a histogram of the 400 ms gating blocks at 0.1 LU, so album
loudness can be computed exactly later with no second decode (#4996). The
histogram reproduces ffmpeg's own figure (-10.68 against -10.7 on the
captured fixture), and the analyzer logs a warning if the two ever drift.

- A background worker, cloned from the fingerprint backfill, measures every
  track, new ones included. Measuring inline in the scan was dropped: the
  analysis decodes the whole file, and a large import could pass the scan's
  one-hour stuck threshold. The scan only deletes a changed file's
  measurement; the worker ticks every 10 minutes.
- Timeouts, the cancel/missing-binary split and settled verdicts follow the
  fingerprint runner. Silence and undecodable files are stored as verdicts;
  stalls are retried. The deadline scales with track length.
- loudness_settings (enabled, files at once) and an admin card with the
  coverage gauge, under GET/PUT /api/admin/library/loudness-settings and
  GET /api/admin/library/loudness.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-06 13:01:01 -04:00