Port yuzu-emu/yuzu#11946: "Enable (Feral Interactive) Gamemode on Linux" (#7245)

src/common/CMakeLists.txt

@@ -154,6 +154,15 @@ add_library(citra_common STATIC
     zstd_compression.h
 )
 
+if (UNIX AND NOT APPLE)
+  target_sources(citra_common PRIVATE
+    linux/gamemode.cpp
+    linux/gamemode.h
+  )
+
+  target_link_libraries(citra_common PRIVATE gamemode)
+endif()
+
 if (APPLE)
     target_sources(citra_common PUBLIC
         apple_authorization.h

src/common/linux/gamemode.cpp

@@ -0,0 +1,39 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <gamemode_client.h>
+
+#include "common/linux/gamemode.h"
+#include "common/settings.h"
+
+namespace Common::Linux {
+
+void StartGamemode() {
+    if (Settings::values.enable_gamemode) {
+        if (gamemode_request_start() < 0) {
+            LOG_WARNING(Frontend, "Failed to start gamemode: {}", gamemode_error_string());
+        } else {
+            LOG_INFO(Frontend, "Started gamemode");
+        }
+    }
+}
+
+void StopGamemode() {
+    if (Settings::values.enable_gamemode) {
+        if (gamemode_request_end() < 0) {
+            LOG_WARNING(Frontend, "Failed to stop gamemode: {}", gamemode_error_string());
+        } else {
+            LOG_INFO(Frontend, "Stopped gamemode");
+        }
+    }
+}
+
+void SetGamemodeState(bool state) {
+    if (state) {
+        StartGamemode();
+    } else {
+        StopGamemode();
+    }
+}
+
+} // namespace Common::Linux

src/common/linux/gamemode.h

@@ -0,0 +1,24 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+namespace Common::Linux {
+
+/**
+ * Start the (Feral Interactive) Linux gamemode if it is installed and it is activated
+ */
+void StartGamemode();
+
+/**
+ * Stop the (Feral Interactive) Linux gamemode if it is installed and it is activated
+ */
+void StopGamemode();
+
+/**
+ * Start or stop the (Feral Interactive) Linux gamemode if it is installed and it is activated
+ * @param state The new state the gamemode should have
+ */
+void SetGamemodeState(bool state);
+
+} // namespace Common::Linux

src/common/settings.h

@@ -421,6 +421,8 @@ struct Values {
     std::vector<InputProfile> input_profiles; ///< The list of input profiles
     std::vector<TouchFromButtonMap> touch_from_button_maps;
 
+    SwitchableSetting<bool> enable_gamemode{true, "enable_gamemode"};
+
     // Core
     Setting<bool> use_cpu_jit{true, "use_cpu_jit"};
     SwitchableSetting<s32, true> cpu_clock_percentage{100, 5, 400, "cpu_clock_percentage"};