40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
// native_bridge/include/FxRealtimeIPC.h
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// SHM layout cho fx_vst_bridge --realtime-fx (VST FX xử lý realtime, cloud-FX
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// loop): engine (Python) tạo mapping, bridge mở và chạy vòng lặp audio.
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// Tất cả field u32/float (4-byte) — KHÔNG padding — mirror chính xác bằng
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// ctypes trong app/core/fx_realtime.py.
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#pragma once
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#include <cstdint>
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#define FXRT_MAGIC 0x46585254u // "FXRT"
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#define FXRT_BLOCK 256
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#define FXRT_IN_SLOTS 4 // engine -> bridge
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#define FXRT_OUT_SLOTS 8 // bridge -> engine
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#define FXRT_STATE_STARTING 0
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#define FXRT_STATE_READY 1
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#define FXRT_STATE_ERROR 2
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// Header 48 bytes (12 u32) — giữ thứ tự khớp fx_realtime.py.
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struct FxRealtimeHeader {
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volatile uint32_t magic;
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volatile uint32_t state;
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uint32_t sampleRate;
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uint32_t blockSize;
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volatile uint32_t running; // engine set 0 → bridge thoát
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volatile uint32_t heartbeat; // bridge tăng mỗi 100ms (watchdog)
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volatile uint32_t inWrite; // producer: engine
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volatile uint32_t inRead; // consumer: bridge
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uint32_t inSlots;
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volatile uint32_t outWrite; // producer: bridge
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volatile uint32_t outRead; // consumer: engine
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uint32_t outSlots;
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};
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struct FxRealtimeIPC {
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FxRealtimeHeader h;
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float inL[FXRT_IN_SLOTS][FXRT_BLOCK];
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float inR[FXRT_IN_SLOTS][FXRT_BLOCK];
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float outL[FXRT_OUT_SLOTS][FXRT_BLOCK];
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float outR[FXRT_OUT_SLOTS][FXRT_BLOCK];
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};
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