[Patcher] Plugin Loader

Added a plugin loader which can be enabled with allow_plugins in the config.

src/xenia/patcher/plugin_loader.h

@@ -0,0 +1,57 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2023 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_PLUGIN_LOADER_H_
+#define XENIA_PLUGIN_LOADER_H_
+
+#include "xenia/kernel/kernel_state.h"
+#include "xenia/memory.h"
+
+namespace xe {
+namespace patcher {
+
+struct PluginInfoEntry {
+  std::string name;
+  std::string file;
+  std::vector<uint64_t> hashes;
+  uint32_t title_id;
+  std::string desc;
+  bool is_enabled;
+};
+
+class PluginLoader {
+ public:
+  PluginLoader(kernel::KernelState* kernel_state,
+               const std::filesystem::path plugins_root);
+
+  void LoadTitlePlugins(const uint32_t title_id);
+  bool IsAnyPluginForTitleAvailable(const uint32_t title_id,
+                                    const uint64_t module_hash) const;
+  bool IsAnyPluginLoaded() { return is_any_plugin_loaded_; }
+
+ private:
+  void LoadConfigs();
+  void LoadTitleConfig(const uint32_t title_id);
+  void CreatePluginDevice(const uint32_t title_id);
+  void LoadTitlePlugin(const PluginInfoEntry& entry);
+
+  std::vector<uint64_t> GetHashes(
+      const std::shared_ptr<cpptoml::base> toml_entry);
+
+  kernel::KernelState* kernel_state_;
+  std::filesystem::path plugins_root_;
+
+  std::vector<PluginInfoEntry> plugin_configs_;
+
+  bool is_any_plugin_loaded_;
+};
+
+}  // namespace patcher
+}  // namespace xe
+#endif