Only use SDL wakelock on Linux

SDL has internally fixed shenanigans related to wakelocking through DBus
from inside sandboxes from around August 2022, so we can now remove the
workaround we used since 2021.

src/input_common/drivers/sdl_driver.cpp

@@ -483,6 +483,10 @@ void SDLDriver::CloseJoysticks() {
 }
 
 SDLDriver::SDLDriver(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
+    // Set our application name. Currently passed to DBus by SDL and visible to the user through
+    // their desktop environment.
+    SDL_SetHint(SDL_HINT_APP_NAME, "yuzu");
+
     if (!Settings::values.enable_raw_input) {
         // Disable raw input. When enabled this setting causes SDL to die when a web applet opens
         SDL_SetHint(SDL_HINT_JOYSTICK_RAWINPUT, "0");

src/yuzu/main.cpp

@@ -447,6 +447,14 @@ GMainWindow::GMainWindow(std::unique_ptr<Config> config_, bool has_broken_vulkan
 
 #if defined(HAVE_SDL2) && !defined(_WIN32)
     SDL_InitSubSystem(SDL_INIT_VIDEO);
+
+    // Set a screensaver inhibition reason string. Currently passed to DBus by SDL and visible to
+    // the user through their desktop environment.
+    //: TRANSLATORS: This string is shown to the user to explain why yuzu needs to prevent the
+    //: computer from sleeping
+    QByteArray wakelock_reason = tr("Running a game").toLatin1();
+    SDL_SetHint(SDL_HINT_SCREENSAVER_INHIBIT_ACTIVITY_NAME, wakelock_reason.data());
+
     // SDL disables the screen saver by default, and setting the hint
     // SDL_HINT_VIDEO_ALLOW_SCREENSAVER doesn't seem to work, so we just enable the screen saver
     // for now.
@@ -1623,45 +1631,6 @@ void GMainWindow::OnPrepareForSleep(bool prepare_sleep) {
 }
 
 #ifdef __unix__
-static std::optional<QDBusObjectPath> HoldWakeLockLinux(u32 window_id = 0) {
-    if (!QDBusConnection::sessionBus().isConnected()) {
-        return {};
-    }
-    // reference: https://flatpak.github.io/xdg-desktop-portal/#gdbus-org.freedesktop.portal.Inhibit
-    QDBusInterface xdp(QString::fromLatin1("org.freedesktop.portal.Desktop"),
-                       QString::fromLatin1("/org/freedesktop/portal/desktop"),
-                       QString::fromLatin1("org.freedesktop.portal.Inhibit"));
-    if (!xdp.isValid()) {
-        LOG_WARNING(Frontend, "Couldn't connect to XDP D-Bus endpoint");
-        return {};
-    }
-    QVariantMap options = {};
-    //: TRANSLATORS: This string is shown to the user to explain why yuzu needs to prevent the
-    //: computer from sleeping
-    options.insert(QString::fromLatin1("reason"),
-                   QCoreApplication::translate("GMainWindow", "yuzu is running a game"));
-    // 0x4: Suspend lock; 0x8: Idle lock
-    QDBusReply<QDBusObjectPath> reply =
-        xdp.call(QString::fromLatin1("Inhibit"),
-                 QString::fromLatin1("x11:") + QString::number(window_id, 16), 12U, options);
-
-    if (reply.isValid()) {
-        return reply.value();
-    }
-    LOG_WARNING(Frontend, "Couldn't read Inhibit reply from XDP: {}",
-                reply.error().message().toStdString());
-    return {};
-}
-
-static void ReleaseWakeLockLinux(QDBusObjectPath lock) {
-    if (!QDBusConnection::sessionBus().isConnected()) {
-        return;
-    }
-    QDBusInterface unlocker(QString::fromLatin1("org.freedesktop.portal.Desktop"), lock.path(),
-                            QString::fromLatin1("org.freedesktop.portal.Request"));
-    unlocker.call(QString::fromLatin1("Close"));
-}
-
 std::array<int, 3> GMainWindow::sig_interrupt_fds{0, 0, 0};
 
 void GMainWindow::SetupSigInterrupts() {
@@ -1714,12 +1683,6 @@ void GMainWindow::PreventOSSleep() {
     SetThreadExecutionState(ES_CONTINUOUS | ES_SYSTEM_REQUIRED | ES_DISPLAY_REQUIRED);
 #elif defined(HAVE_SDL2)
     SDL_DisableScreenSaver();
-#ifdef __unix__
-    auto reply = HoldWakeLockLinux(winId());
-    if (reply) {
-        wake_lock = std::move(reply.value());
-    }
-#endif
 #endif
 }
 
@@ -1728,11 +1691,6 @@ void GMainWindow::AllowOSSleep() {
     SetThreadExecutionState(ES_CONTINUOUS);
 #elif defined(HAVE_SDL2)
     SDL_EnableScreenSaver();
-#ifdef __unix__
-    if (!wake_lock.path().isEmpty()) {
-        ReleaseWakeLockLinux(wake_lock);
-    }
-#endif
 #endif
 }
 

src/yuzu/main.h

@@ -504,8 +504,6 @@ private:
 #ifdef __unix__
     QSocketNotifier* sig_interrupt_notifier;
     static std::array<int, 3> sig_interrupt_fds;
-
-    QDBusObjectPath wake_lock{};
 #endif
 
 protected: