Add regression test runner

src/duckstation-regtest/regtest_host_interface.h

@@ -0,0 +1,49 @@
+#pragma once
+#include "core/host_interface.h"
+#include "regtest_settings_interface.h"
+
+class RegTestHostInterface : public HostInterface
+{
+public:
+  RegTestHostInterface();
+  ~RegTestHostInterface();
+
+  bool Initialize() override;
+  void Shutdown() override;
+
+  void ReportError(const char* message) override;
+  void ReportMessage(const char* message) override;
+  void ReportDebuggerMessage(const char* message) override;
+  bool ConfirmMessage(const char* message) override;
+
+  void AddOSDMessage(std::string message, float duration = 2.0f) override;
+  void DisplayLoadingScreen(const char* message, int progress_min = -1, int progress_max = -1,
+                            int progress_value = -1) override;
+  void GetGameInfo(const char* path, CDImage* image, std::string* code, std::string* title) override;
+
+  void OnRunningGameChanged(const std::string& path, CDImage* image, const std::string& game_code,
+                            const std::string& game_title);
+
+  std::string GetStringSettingValue(const char* section, const char* key, const char* default_value = "") override;
+  bool GetBoolSettingValue(const char* section, const char* key, bool default_value = false) override;
+  int GetIntSettingValue(const char* section, const char* key, int default_value = 0) override;
+  float GetFloatSettingValue(const char* section, const char* key, float default_value = 0.0f) override;
+  std::vector<std::string> GetSettingStringList(const char* section, const char* key) override;
+
+  std::string GetBIOSDirectory() override;
+
+  std::unique_ptr<ByteStream> OpenPackageFile(const char* path, u32 flags) override;
+
+protected:
+  bool AcquireHostDisplay() override;
+  void ReleaseHostDisplay() override;
+
+  std::unique_ptr<AudioStream> CreateAudioStream(AudioBackend backend) override;
+
+private:
+  void LoadGameSettingsDatabase();
+  void InitializeSettings();
+  void UpdateSettings();
+
+  RegTestSettingsInterface m_settings_interface;
+};