molluskandClaude Opus 4.8
f6520b79f7
Wires MultitrackRecorder into the live audio path, behind a recording_mode.
- config: RecordingMode { Mixed, Multitrack, Both } + AppConfig.recording_mode
(serde-default Mixed, back-compat); CoreCommand::SetRecordingMode, sent at
app startup from config.
- multitrack.rs: mic now arrives async via push_mic into an internal FIFO,
drained one frame per end_cycle (mirrors recorder.rs) so the mic track tracks
the cycle clock; added dir() accessor. mic is a plain WavWriter now.
- core: parallel `multitrack` slot + `is_multitrack` fast-path gate (exactly one
of the mixed/multitrack recorders is active). SetRecording start branches on
mode: Mixed → single-file Recorder (unchanged); Multitrack/Both → a per-session
dir, MultitrackRecorder, and registers everyone already in the room (named,
silence-aligned from t=0). The mixer taps each peer's RAW frame (pre-volume/
mute/limiter) into stems and writes peer stems + mix (Both) + end_cycle per
cycle; the capture thread pushes mic to whichever recorder; PeerJoined adds a
late joiner's stem track. stop_recording finalizes both.
No UI yet to pick the mode (Stage 3) — defaults to Mixed, so behaviour is
unchanged until then; set recording_mode in config.json to exercise stems.
168 lib tests, clippy --all-targets clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>