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Ψ-W2-T2 remediation: atomic temp+rename collapse write, honest unknown-channel fallback, [verify — DAW] markers, corrected+filed bake-collapse deferral, observable collapse message, quiet-NaN test

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Daniel Harvey
2026-08-01 22:08:39 -04:00
parent 4fa3c1dd15
commit 8b191e3379
12 changed files with 151 additions and 31 deletions
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src/shell/capture/CLAUDE.md
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@@ -61,7 +61,7 @@ detail not covered there:
- `realtime_lifecycle` (`shell/capture`) — the in-flight realtime-capture state machine + globals (Q-W3 hoist): the action starts it, `OnTimer` drives it per tick via `DriveRealtimeCapture` (a single-pointer-test idle fast path — load-bearing hot-path guardrail), `CommitRealtimeResult` lands a finished capture in the bank, `AbortRealtimeCaptureForUnload` tears down cleanly on extension unload.
- `capture_realtime_shell` (`shell/capture`) — the async realtime-record backend surface (Q-W6 split of the former fat `capture.h`): `RealtimeRecordBackend::begin`/`tick`/`abort`, transport-driven across timer ticks (a realtime record cannot block REAPER's UI for its own duration). Deliberately shares NO interface with the offline backend — the lifecycles genuinely differ (the former `ICaptureBackend` interface was deleted in Q-W3, T4-26).
- `capture_realtime_finalize` (`shell/capture`) — the file-side half of the realtime-record shell (Q-W3, T4-08): discovers the file REAPER actually recorded, moves it into the bank, runs the Auto-tail PCM decay-scan trim, and populates the finished `Sample`.
- `insert` — placement via `InsertMedia`. **Conform-to-project-tempo is an explicit opt-in flag, never silent stretching.**
- `insert` — placement via `InsertMedia`. **Conform-to-project-tempo is an explicit opt-in flag, never silent stretching.** The mono collapse needs no change here: `insert.cpp` passes only a path to `InsertMedia`, and REAPER derives the item's channel count from the file itself — a 1-channel WAV yields a mono item for free.
- `provenance_shell` — FX-chain identity queries via `TrackFX_*`/`TakeFX_*` APIs; feeds the pure `provenance` fingerprint builder. Stamps `Sample.provenance` on capture; ambiguous/mixed cases record nothing conservatively.
- `track_guid` — shared `MediaTrack*` → canonical GUID-string formatter; single source of truth for membership keys.
- `item_read` — the ONE place a `MediaItem*` is read for its canonical GUID string (`itemGuid`) and for the durable `P_LANENAME` of the fixed lane it sits on (`itemLaneName`); extracted from previously-duplicated `itemGuid`/`itemLaneName` pairs in `view.cpp` and `bank_panel.cpp` — the item-read analog of `track_guid`'s single `MediaTrack*`→GUID-key formatter. Callers must already know the track is fixed-lane (`I_FREEMODE==2`) before calling `itemLaneName`; the pure `isOnManualLane` predicate handles the non-fixed-lane case separately.