Refactor project structure

core/ANSLibsLoader/include/OvLoader.h

@@ -0,0 +1,69 @@
+#pragma once
+// ============================================================================
+// OvLoader -- Runtime discovery and pre-loading of OpenVINO DLLs
+//
+// OpenVINO is normally import-linked (openvino.lib), but the DLLs
+// must be discoverable at process load time.  OvLoader ensures the correct
+// DLLs are found by:
+//   1. Pre-loading Intel TBB (dependency of openvino.dll)
+//   2. Pre-loading openvino.dll from the ANSCENTER shared directory
+//   3. Optionally querying the OpenVINO version via the C API
+//
+// Plugins (CPU, GPU, NPU) and frontends (IR, ONNX, etc.) are discovered
+// automatically by OpenVINO's internal plugin loader from the same directory
+// once the shared directory has been injected into the DLL search path.
+// ============================================================================
+
+#include "ANSLibsLoader.h"   // ANSLIBS_API
+#include "DynLibUtils.h"     // LibHandle
+
+#include <string>
+#include <vector>
+#include <mutex>
+
+// ============================================================================
+struct ANSLIBS_API OvInfo
+{
+    std::string dllPath;        // Full path to loaded openvino.dll
+    std::string version;        // e.g. "2024.6.0" (build number from C API)
+    bool        loaded = false;
+};
+
+// ============================================================================
+class ANSLIBS_API OvLoader
+{
+public:
+    /// Discover and pre-load OpenVINO + TBB DLLs.
+    /// Safe to call multiple times -- subsequent calls are no-ops.
+    /// @param shared_dir  Directory to search first (default: ANSCENTER shared).
+    /// @param verbose     Print discovery results to stdout.
+    /// @returns Reference to the discovery result.
+    [[nodiscard]] static const OvInfo& Initialize(
+        const std::string& shared_dir = ANSCENTER::DynLib::DEFAULT_SHARED_DIR,
+        bool verbose = true);
+
+    /// Release pre-loaded library handles.
+    static void Shutdown();
+
+    /// Query current state.
+    [[nodiscard]] static const OvInfo& Current() noexcept { return s_info; }
+    [[nodiscard]] static bool IsInitialized()    noexcept { return s_initialized; }
+
+private:
+    /// Build candidate DLL names for each component.
+    static std::vector<std::string> TbbCandidates(const std::string& shared_dir);
+    static std::vector<std::string> TbbMallocCandidates(const std::string& shared_dir);
+    static std::vector<std::string> OvCoreCandidates(const std::string& shared_dir);
+    static std::vector<std::string> OvCApiCandidates(const std::string& shared_dir);
+
+    /// Try to extract version string via the ov_get_openvino_version C API.
+    static std::string TryGetVersion(LibHandle hOvC);
+
+    static std::mutex s_mutex;
+    static bool       s_initialized;
+    static OvInfo     s_info;
+    static LibHandle  s_hTbb;
+    static LibHandle  s_hTbbMalloc;
+    static LibHandle  s_hOvCore;
+    static LibHandle  s_hOvC;
+};