Add Host/HostSettings

src/core/CMakeLists.txt

@@ -51,12 +51,14 @@ add_library(core
     gte.cpp
     gte.h
     gte_types.h
+    host.h
     host_display.cpp
     host_display.h
     host_interface.cpp
     host_interface.h
     host_interface_progress_callback.cpp
     host_interface_progress_callback.h
+    host_settings.h
     imgui_styles.cpp
     imgui_styles.h  
     imgui_fullscreen.cpp

src/core/core.vcxproj

@@ -117,9 +117,11 @@
     <ClInclude Include="gpu_hw.h" />
     <ClInclude Include="gpu_hw_opengl.h" />
     <ClInclude Include="gte_types.h" />
+    <ClInclude Include="host.h" />
     <ClInclude Include="host_display.h" />
     <ClInclude Include="host_interface.h" />
     <ClInclude Include="host_interface_progress_callback.h" />
+    <ClInclude Include="host_settings.h" />
     <ClInclude Include="imgui_fullscreen.h" />
     <ClInclude Include="imgui_styles.h" />
     <ClInclude Include="interrupt_controller.h" />

src/core/core.vcxproj.filters

@@ -126,5 +126,7 @@
     <ClInclude Include="imgui_fullscreen.h" />
     <ClInclude Include="imgui_styles.h" />
     <ClInclude Include="cheevos.h" />
+    <ClInclude Include="host.h" />
+    <ClInclude Include="host_settings.h" />
   </ItemGroup>
 </Project>

src/core/host.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "common/types.h"
+
+#include <optional>
+#include <string>
+#include <string_view>
+#include <vector>
+
+namespace Host {
+/// Reads a file from the resources directory of the application.
+/// This may be outside of the "normal" filesystem on platforms such as Mac.
+std::optional<std::vector<u8>> ReadResourceFile(const char* filename);
+
+/// Reads a resource file file from the resources directory as a string.
+std::optional<std::string> ReadResourceFileToString(const char* filename);
+
+/// Adds OSD messages, duration is in seconds.
+void AddOSDMessage(std::string message, float duration = 2.0f);
+void AddKeyedOSDMessage(std::string key, std::string message, float duration = 2.0f);
+void AddFormattedOSDMessage(float duration, const char* format, ...);
+void AddKeyedFormattedOSDMessage(std::string key, float duration, const char* format, ...);
+void RemoveKeyedOSDMessage(std::string key);
+void ClearOSDMessages();
+
+/// Displays an asynchronous error on the UI thread, i.e. doesn't block the caller.
+void ReportErrorAsync(const std::string_view& title, const std::string_view& message);
+void ReportFormattedErrorAsync(const std::string_view& title, const char* format, ...);
+} // namespace Host

src/core/host_settings.h

@@ -0,0 +1,70 @@
+#pragma once
+
+#include "common/types.h"
+#include <mutex>
+#include <string>
+#include <vector>
+
+class SettingsInterface;
+
+namespace Host {
+// Base setting retrieval, bypasses layers.
+std::string GetBaseStringSettingValue(const char* section, const char* key, const char* default_value = "");
+bool GetBaseBoolSettingValue(const char* section, const char* key, bool default_value = false);
+s32 GetBaseIntSettingValue(const char* section, const char* key, s32 default_value = 0);
+u32 GetBaseUIntSettingValue(const char* section, const char* key, u32 default_value = 0);
+float GetBaseFloatSettingValue(const char* section, const char* key, float default_value = 0.0f);
+double GetBaseDoubleSettingValue(const char* section, const char* key, double default_value = 0.0);
+std::vector<std::string> GetBaseStringListSetting(const char* section, const char* key);
+
+// Allows the emucore to write settings back to the frontend. Use with care.
+// You should call CommitBaseSettingChanges() after finishing writing, or it may not be written to disk.
+void SetBaseBoolSettingValue(const char* section, const char* key, bool value);
+void SetBaseIntSettingValue(const char* section, const char* key, s32 value);
+void SetBaseUIntSettingValue(const char* section, const char* key, u32 value);
+void SetBaseFloatSettingValue(const char* section, const char* key, float value);
+void SetBaseStringSettingValue(const char* section, const char* key, const char* value);
+void SetBaseStringListSettingValue(const char* section, const char* key, const std::vector<std::string>& values);
+void DeleteBaseSettingValue(const char* section, const char* key);
+void CommitBaseSettingChanges();
+
+// Settings access, thread-safe.
+std::string GetStringSettingValue(const char* section, const char* key, const char* default_value = "");
+bool GetBoolSettingValue(const char* section, const char* key, bool default_value = false);
+int GetIntSettingValue(const char* section, const char* key, s32 default_value = 0);
+u32 GetUIntSettingValue(const char* section, const char* key, u32 default_value = 0);
+float GetFloatSettingValue(const char* section, const char* key, float default_value = 0.0f);
+double GetDoubleSettingValue(const char* section, const char* key, double default_value = 0.0);
+std::vector<std::string> GetStringListSetting(const char* section, const char* key);
+
+/// Direct access to settings interface. Must hold the lock when calling GetSettingsInterface() and while using it.
+std::unique_lock<std::mutex> GetSettingsLock();
+SettingsInterface* GetSettingsInterface();
+
+/// Returns the settings interface that controller bindings should be loaded from.
+/// If an input profile is being used, this will be the input layer, otherwise the layered interface.
+SettingsInterface* GetSettingsInterfaceForBindings();
+
+namespace Internal {
+/// Retrieves the base settings layer. Must call with lock held.
+SettingsInterface* GetBaseSettingsLayer();
+
+/// Retrieves the game settings layer, if present. Must call with lock held.
+SettingsInterface* GetGameSettingsLayer();
+
+/// Retrieves the input settings layer, if present. Must call with lock held.
+SettingsInterface* GetInputSettingsLayer();
+
+/// Sets the base settings layer. Should be called by the host at initialization time.
+void SetBaseSettingsLayer(SettingsInterface* sif);
+
+/// Sets the game settings layer. Called by VMManager when the game changes.
+void SetGameSettingsLayer(SettingsInterface* sif);
+
+/// Sets the input profile settings layer. Called by VMManager when the game changes.
+void SetInputSettingsLayer(SettingsInterface* sif);
+
+/// Updates the variables in the EmuFolders namespace, reloading subsystems if needed. Must call with the lock held.
+void UpdateEmuFolders();
+} // namespace Internal
+} // namespace Host