1 files changed, 76 insertions, 0 deletions
diff --git a/src/core/hle/service/am/applet_message_queue.h b/src/core/hle/service/am/applet_message_queue.h
new file mode 100644
index 000000000..5cb236d47
--- /dev/null
+++ b/src/core/hle/service/am/applet_message_queue.h
@@ -0,0 +1,76 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <queue>
+
+#include "core/hle/service/kernel_helpers.h"
+#include "core/hle/service/service.h"
+
+namespace Kernel {
+class KReadableEvent;
+} // namespace Kernel
+
+namespace Service::AM {
+
+class AppletMessageQueue {
+public:
+    // This is nn::am::AppletMessage
+    enum class AppletMessage : u32 {
+        None = 0,
+        ChangeIntoForeground = 1,
+        ChangeIntoBackground = 2,
+        Exit = 4,
+        ApplicationExited = 6,
+        FocusStateChanged = 15,
+        Resume = 16,
+        DetectShortPressingHomeButton = 20,
+        DetectLongPressingHomeButton = 21,
+        DetectShortPressingPowerButton = 22,
+        DetectMiddlePressingPowerButton = 23,
+        DetectLongPressingPowerButton = 24,
+        RequestToPrepareSleep = 25,
+        FinishedSleepSequence = 26,
+        SleepRequiredByHighTemperature = 27,
+        SleepRequiredByLowBattery = 28,
+        AutoPowerDown = 29,
+        OperationModeChanged = 30,
+        PerformanceModeChanged = 31,
+        DetectReceivingCecSystemStandby = 32,
+        SdCardRemoved = 33,
+        LaunchApplicationRequested = 50,
+        RequestToDisplay = 51,
+        ShowApplicationLogo = 55,
+        HideApplicationLogo = 56,
+        ForceHideApplicationLogo = 57,
+        FloatingApplicationDetected = 60,
+        DetectShortPressingCaptureButton = 90,
+        AlbumScreenShotTaken = 92,
+        AlbumRecordingSaved = 93,
+    };
+
+    explicit AppletMessageQueue(Core::System& system);
+    ~AppletMessageQueue();
+
+    Kernel::KReadableEvent& GetMessageReceiveEvent();
+    Kernel::KReadableEvent& GetOperationModeChangedEvent();
+    void PushMessage(AppletMessage msg);
+    AppletMessage PopMessage();
+    std::size_t GetMessageCount() const;
+    void RequestExit();
+    void RequestResume();
+    void FocusStateChanged();
+    void OperationModeChanged();
+
+private:
+    KernelHelpers::ServiceContext service_context;
+
+    Kernel::KEvent* on_new_message;
+    Kernel::KEvent* on_operation_mode_changed;
+
+    mutable std::mutex lock;
+    std::queue<AppletMessage> messages;
+};
+
+} // namespace Service::AM