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feat(engine): render prepared per-track insert graphs (phase 82)

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Johannes Findeisen 2026-11-06 01:35:53 +01:00
commit 62cee7a7b0
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13
docs/TRACK_INSERTS.md
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@ -14,3 +14,16 @@ that a third-party binary is compatible with the host.
The chain API is declared in `xtc_plugin.h`. Setter errors preserve the old
chain; plugin identity and layout are checked when preparing playback.
Playback prepares an independent serial graph for each affected track. Audio
clips on the same track sum before its effects; instrument and scheduled MIDI
contributions also pass through their track graph. Effects run before track
and bus gain/pan, and meters observe their output. Wet/dry uses parallel gain
branches. Internal effect history resets at timeline discontinuities.
Each renderer owns its plans and preallocated raw buffers (up to 256 KiB per
affected track); processing uses blocks of at most 256 frames, with no host
allocation or I/O. Mono effect adapters require zero reported latency. External
plugin state on seeks follows the existing host contract. Bus inserts and
tracks containing both audio assets and MIDI reject preparation explicitly.
Live unassigned sine monitoring remains a separate master input.