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Phase 2: BuiltinFxChain C++ (8 DSP) + control ring SET_PARAM/REPORT_LATENCY

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- native_bridge/src/BuiltinFxChain.{h,cpp}: 8 builtin DSP port 1:1 từ
  Python _apply_builtin_fx_chain (eq/eqpro/compressor/limiter/exciter/rebalance)
  và JS MASTER_MODULE_IO (imager/maximizer). Biquad RBJ DF2T, block-wise
  stateful. createBuiltinFx trả nullptr cho gain/normalize (legacy).
- RenderFxJob: FxSlot thêm bfx, parse builtin 8 loại, runBuiltinSlotSafe SEH,
  realtimeRunChain nhánh builtin, chainGen()/entryLatencies(), setParam
  áp live lên bfx; Vst3Fx latencySamples từ getLatencySamples().
- RealtimeFxLoop: drain ctrl ring (SET_PARAM -> chain.setParam, drop cũ khi
  đầy) + REPORT_LATENCY khi gen đổi (ipc->lat[] ring, lastGen).
- FxRealtimeIPC.h: header 18 u32 (72B), ctrl/lat slots 8, FxCtrlCmd 24B,
  FxLatReport 8B, static_asserts.
- app/core/fx_realtime.py: mirror header 72B (ctrl_write/read, lat_write/read,
  slots), set_param ghi ctrl ring qua _ctrl_enqueue_locked (guard shm),
  get_latencies drain lat ring qua _lat_drain.
- tests/test_builtin_fx_golden.py: golden SNR C++ vs Python (8 cases, ngưỡng
  30dB) + order test eq/compressor xen kẽ.
- TASKS_DAW_A.md: tick 2.1-2.9.

Test: 136 passed (4 fx_realtime_chain + 8 builtin golden + regression).
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Lộc Phạm
2026-08-22 19:55:08 +07:00
parent fd790c1dc6
commit 1390ad545b
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@@ -12,15 +12,15 @@ Trạng thái: `[x]` hoàn thành, `[ ]` chưa. Cập nhật sau mỗi phase.
- [x] 1.7 Pytest: chain hợp nhất → job.json đúng schema; SET_PARAM/REPORT_LATENCY round-trip.
## Phase 2 — Bridge C++: BuiltinFxChain (8 DSP)
- [ ] 2.1 File `native_bridge/src/BuiltinFxChain.{h,cpp}` — khung chain serial + SEH guard.
- [ ] 2.2 Port EQ 4-band (eq) từ Python `_apply_eq4`.
- [ ] 2.3 Port EQ Pro (eqpro) RBJ 8-band từ Python `_apply_eqpro`.
- [ ] 2.4 Port compressor/limiter từ Python.
- [ ] 2.5 Port exciter/rebalance từ Python.
- [ ] 2.6 Port imager/maximizer từ JS WebAudio (MASTER_MODULE_IO) — Python không có.
- [ ] 2.7 `RealtimeFxChain::buildChain` + RenderFxJob: nhận builtin slot → chạy BuiltinFxChain xen kẽ VST3 đúng thứ tự.
- [ ] 2.8 SET_PARAM/REPORT_LATENCY trong bridge (SHM control ring).
- [ ] 2.9 Golden test: C++ vs Python `_apply_builtin_fx_chain` (SNR/diff ngưỡng) + order test xen kẽ.
- [x] 2.1 File `native_bridge/src/BuiltinFxChain.{h,cpp}` — khung chain serial + SEH guard.
- [x] 2.2 Port EQ 4-band (eq) từ Python `_apply_eq4`.
- [x] 2.3 Port EQ Pro (eqpro) RBJ 8-band từ Python `_apply_eqpro`.
- [x] 2.4 Port compressor/limiter từ Python.
- [x] 2.5 Port exciter/rebalance từ Python.
- [x] 2.6 Port imager/maximizer từ JS WebAudio (MASTER_MODULE_IO) — Python không có.
- [x] 2.7 `RealtimeFxChain::buildChain` + RenderFxJob: nhận builtin slot → chạy BuiltinFxChain xen kẽ VST3 đúng thứ tự.
- [x] 2.8 SET_PARAM/REPORT_LATENCY trong bridge (SHM control ring).
- [x] 2.9 Golden test: C++ vs Python `_apply_builtin_fx_chain` (SNR/diff ngưỡng) + order test xen kẽ.
## Phase 3 — Engine Python: render + realtime chain hợp nhất
- [ ] 3.1 `render_engine.py`: track/master đọc chain hợp nhất; Python DSP giữ làm fallback (RENDER_ENGINE≠bridge).