Deluan 404837799b fix(subsonic): don't re-encode a source already in the player's forced format
When a player has a forced transcoding format, ClientInfo.ForceFormat cleared
DirectPlayProfiles unconditionally. A FLAC source on a player configured to
transcode to FLAC was therefore re-encoded to FLAC, wasting CPU and bandwidth
for no gain. Worse, the transcoder pipes ffmpeg output to stdout, so the
resulting FLAC has total_samples=0 and no seek table -- an offline copy of it
can never be seeked. Reported against getTranscodeDecision by the Symfonium
author.

ForceFormat now rebuilds DirectPlayProfiles from the matching transcoding
profiles instead of dropping them: a client declaring a transcoding profile for
a format is proof it can consume that format, so a source already in it is
served as-is. Container and codec come from resolveTargetFormat, so a legacy
"oga" target_format yields an ogg/opus profile, and the profile's
MaxAudioChannels is carried across.

DirectPlayProfile has no bitrate field, so restoring direct play needs a
ceiling to keep an over-bitrate source out of it. GetTranscodeDecision now
seeds that ceiling from the transcoding row's DefaultBitRate when a format was
successfully forced, with the player's own MaxBitRate still taking precedence.
This also closes a gap where the new endpoint ignored DefaultBitRate entirely:
an mp3 320 source on a player forced to mp3@192 was served at 320, while the
legacy /rest/stream path correctly gave 192.

Applied via CapBitrate, which only ever lowers, so a client declaring a
stricter limit keeps it. The legacy path (applyServerOverride) is untouched --
ForceFormat has no other callers.
2026-09-07 14:56:41 -04:00
..
2022-07-26 16:53:17 -04:00
2026-05-28 22:13:05 -03:00