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Phase 24: add mix buses, coherent peak meters and master clipping indicators

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Johannes Findeisen 2026-10-27 16:15:34 +01:00
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24
docs/ROADMAP.md
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@ -587,10 +587,26 @@ Provide the essential mixing controls needed to finish a small or medium-sized p
- Test mute, solo, pan, gain, and routing interactions.
### Acceptance criteria
- Mixer controls behave consistently across tracks, buses, and master output.
- Meter readings correspond to documented signal points and units.
- Solo and mute behavior is covered by automated tests.
- No mixer operation introduces allocations, locks, or other prohibited work in the audio callback.
- [x] Mixer controls behave consistently across tracks, buses, and master output.
- [x] Meter readings correspond to documented signal points and units.
- [x] Solo and mute behavior is covered by automated tests.
- [x] No mixer operation introduces allocations, locks, or other prohibited work in the audio callback.
Implemented: one-level stereo mix buses with routing, shared gain/pan automation,
inclusive solo and mute precedence; coherent audio/MIDI track and bus peaks;
interval master peaks, dBFS ballistics and sticky clipping; v9 persistence reading
v1–v8. See MIXER.md for exact taps, gain staging and callback scratch bounds.
Independent per-track aux sends/sidechains and per-bus graph effects remain
conditional/deferred because graph sources still expose shared mixes.
Validation: warning-enabled core/GUI builds and unit/integration tests, bus and
backend fault tests, GUI plugin/workflow tests, software JACK GUI/audio/MIDI,
allocation-failure/callback-allocation guard, static analysis, installation and
package relocation, optional-dependency-free build, and core/GUI ASan+UBSan.
The live MIDI connection test required one retry after a JACK connection failure;
its full playback assertions passed on retry. GUI leak checks use the existing
fontconfig suppression; core checks are unsuppressed. Physical hardware,
human listening and extended high-density endurance remain unverified.
## Phase 25 — Plugin and Instrument Usability