G1: JUCE engine SHM chain rong POC - probe pass, khong lag them

2026-08-28 12:35:37 +07:00
parent d7dd626dd5
commit 9c0d35def4
13 changed files with 517 additions and 33 deletions
@@ -0,0 +1,50 @@
+// native_bridge/include/FxShm.h
+// openShm/closeShm dùng chung giữa RealtimeFxLoop.cpp (fx_vst_bridge
+// --realtime-fx) và juce_fx/JuceFxLoop.cpp (juce_fx_bridge --juce-fx).
+// Windows-only (FileMapping); mở mapping có sẵn do engine (Python) tạo.
+#pragma once
+#ifdef _WIN32
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+#include <windows.h>
+#endif
+
+#include <string>
+
+namespace fxshm {
+
+struct ShmView {
+    void* map = nullptr;
+    void* view = nullptr;
+};
+
+inline ShmView* openShm(const std::string& name, size_t size) {
+#ifdef _WIN32
+    int wlen = MultiByteToWideChar(CP_UTF8, 0, name.c_str(), -1, nullptr, 0);
+    std::wstring wname(wlen, L'\0');
+    MultiByteToWideChar(CP_UTF8, 0, name.c_str(), -1, &wname[0], wlen);
+    HANDLE map = OpenFileMappingW(FILE_MAP_ALL_ACCESS, FALSE, wname.c_str());
+    if (!map) return nullptr;
+    void* view = MapViewOfFile(map, FILE_MAP_ALL_ACCESS, 0, 0, size);
+    if (!view) { CloseHandle(map); return nullptr; }
+    ShmView* v = new ShmView();
+    v->map = map;
+    v->view = view;
+    return v;
+#else
+    (void)name; (void)size;
+    return nullptr;
+#endif
+}
+
+inline void closeShm(ShmView* v) {
+    if (!v) return;
+#ifdef _WIN32
+    if (v->view) UnmapViewOfFile(v->view);
+    if (v->map) CloseHandle((HANDLE)v->map);
+#endif
+    delete v;
+}
+
+}  // namespace fxshm