--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DPF-Prymula-audioplugins/dpf/distrho/extra/LibraryUtils.hpp	Mon Oct 16 21:53:34 2023 +0200
@@ -0,0 +1,136 @@
+/*
+ * DISTRHO Plugin Framework (DPF)
+ * Copyright (C) 2012-2021 Filipe Coelho <falktx@falktx.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any purpose with
+ * or without fee is hereby granted, provided that the above copyright notice and this
+ * permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
+ * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef DISTRHO_LIBRARY_UTILS_HPP_INCLUDED
+#define DISTRHO_LIBRARY_UTILS_HPP_INCLUDED
+
+#include "../DistrhoUtils.hpp"
+
+#ifdef DISTRHO_OS_WINDOWS
+# ifndef NOMINMAX
+#  define NOMINMAX
+# endif
+# include <winsock2.h>
+# include <windows.h>
+typedef HMODULE lib_t;
+#else
+# include <dlfcn.h>
+typedef void* lib_t;
+#endif
+
+START_NAMESPACE_DISTRHO
+
+// -----------------------------------------------------------------------
+// library related calls
+
+/*
+ * Open 'filename' library (must not be null).
+ * May return null, in which case "lib_error" has the error.
+ */
+static inline
+lib_t lib_open(const char* const filename) noexcept
+{
+    DISTRHO_SAFE_ASSERT_RETURN(filename != nullptr && filename[0] != '\0', nullptr);
+
+    try {
+#ifdef DISTRHO_OS_WINDOWS
+        return ::LoadLibraryA(filename);
+#else
+        return ::dlopen(filename, RTLD_NOW|RTLD_LOCAL);
+#endif
+    } DISTRHO_SAFE_EXCEPTION_RETURN("lib_open", nullptr);
+}
+
+/*
+ * Close a previously opened library (must not be null).
+ * If false is returned, "lib_error" has the error.
+ */
+static inline
+bool lib_close(const lib_t lib) noexcept
+{
+    DISTRHO_SAFE_ASSERT_RETURN(lib != nullptr, false);
+
+    try {
+#ifdef DISTRHO_OS_WINDOWS
+        return ::FreeLibrary(lib);
+#else
+        return (::dlclose(lib) == 0);
+#endif
+    } DISTRHO_SAFE_EXCEPTION_RETURN("lib_close", false);
+}
+
+/*
+ * Get a library symbol (must not be null).
+ * Returns null if the symbol is not found.
+ */
+template<typename Func>
+static inline
+Func lib_symbol(const lib_t lib, const char* const symbol) noexcept
+{
+    DISTRHO_SAFE_ASSERT_RETURN(lib != nullptr, nullptr);
+    DISTRHO_SAFE_ASSERT_RETURN(symbol != nullptr && symbol[0] != '\0', nullptr);
+
+    try {
+#ifdef DISTRHO_OS_WINDOWS
+# if defined(__GNUC__) && (__GNUC__ >= 9)
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Wcast-function-type"
+# endif
+        return (Func)::GetProcAddress(lib, symbol);
+# if defined(__GNUC__) && (__GNUC__ >= 9)
+#  pragma GCC diagnostic pop
+# endif
+#else
+        return (Func)(uintptr_t)::dlsym(lib, symbol);
+#endif
+    } DISTRHO_SAFE_EXCEPTION_RETURN("lib_symbol", nullptr);
+}
+
+/*
+ * Return the last operation error ('filename' must not be null).
+ * May return null.
+ */
+static inline
+const char* lib_error(const char* const filename) noexcept
+{
+    DISTRHO_SAFE_ASSERT_RETURN(filename != nullptr && filename[0] != '\0', nullptr);
+
+#ifdef DISTRHO_OS_WINDOWS
+    static char libError[2048+1];
+    std::memset(libError, 0, sizeof(libError));
+
+    try {
+        const DWORD winErrorCode  = ::GetLastError();
+        const int   winErrorFlags = FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS;
+        LPVOID      winErrorString;
+
+        ::FormatMessage(winErrorFlags, nullptr, winErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&winErrorString, 0, nullptr);
+
+        std::snprintf(libError, 2048, "%s: error code %li: %s", filename, winErrorCode, (const char*)winErrorString);
+        ::LocalFree(winErrorString);
+    } DISTRHO_SAFE_EXCEPTION("lib_error");
+
+    return (libError[0] != '\0') ? libError : nullptr;
+#else
+    return ::dlerror();
+#endif
+}
+
+// -----------------------------------------------------------------------
+
+END_NAMESPACE_DISTRHO
+
+#endif // DISTRHO_LIBRARY_UTILS_HPP_INCLUDED