Commit Graph
2 Commits
Author SHA1 Message Date
bvandeusenandClaude Opus 5.5 2e36e70268 feat(android): Sonos/UPnP queue plays leveled URLs, rendered a track ahead (M464 #5002)
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Every URL the Sonos queue loader sends is minted with level=true and
the track's album-play verdict from its neighbours in the queue; the
server returns the plain stream when leveling is off or changes
nothing. The playing track and the one after it are rendered ahead,
and each time the renderer moves on, the next is.

Server: a mint no longer prerenders on its own. A queue load mints
every track, which would have started an ffmpeg render per track at
once. The request now carries prerender, and at most two prerenders
run at a time; past that they are dropped, since a fetch renders on
demand anyway.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-06 19:38:21 -04:00
bvandeusenandClaude Opus 5.5 f34423a0e0 feat: leveled FLAC stream for Sonos/UPnP speakers (M464 #5001)
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release / web (push) Successful in 2m4s
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release / integration (push) Canceled after 4m39s
release / android (push) Canceled after 2m53s
release / Build signed APK (releases and dev) (push) Canceled after 2m24s
Speakers fetch their own audio, so the phone cannot level it. A cast
token minted with level=true (and the client's asAlbum, which only the
queue holder knows) now returns GET /api/tracks/{id}/leveled.flac: the
track rendered by ffmpeg at the user's gain (volume=XdB, plus
alimiter at -1 dBFS for a limiter-mode boost), metadata stripped, FLAC
at 16 or 24 bits and at most 48 kHz. The gain is computed server-side
from the user's preference and the stored loudness, carried as
?g=<centi-dB>&lim=0|1 and signed into the token, so an edited URL does
not verify. Unity gains get the plain stream.

Renders are written beside the cache file and renamed in, keyed by the
source's size and mtime, coalesced per file (singleflight, detached
from the requesting speaker so a retry finds the render running),
started at mint time so the fetch finds them ready, and evicted least
recently used past leveled_cache_mb, a new admin setting (migration
0068, Loudness analysis card).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-06 19:31:07 -04:00