1 files changed, 37 insertions, 0 deletions
diff --git a/src/core/hle/service/am/service/audio_controller.h b/src/core/hle/service/am/service/audio_controller.h
new file mode 100644
index 000000000..4b0f3f9ae
--- /dev/null
+++ b/src/core/hle/service/am/service/audio_controller.h
@@ -0,0 +1,37 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/service.h"
+
+namespace Service::AM {
+
+class IAudioController final : public ServiceFramework<IAudioController> {
+public:
+    explicit IAudioController(Core::System& system_);
+    ~IAudioController() override;
+
+private:
+    Result SetExpectedMasterVolume(f32 main_applet_volume, f32 library_applet_volume);
+    Result GetMainAppletExpectedMasterVolume(Out<f32> out_main_applet_volume);
+    Result GetLibraryAppletExpectedMasterVolume(Out<f32> out_library_applet_volume);
+    Result ChangeMainAppletMasterVolume(f32 volume, s64 fade_time_ns);
+    Result SetTransparentVolumeRate(f32 transparent_volume_rate);
+
+    static constexpr float MinAllowedVolume = 0.0f;
+    static constexpr float MaxAllowedVolume = 1.0f;
+
+    float m_main_applet_volume{0.25f};
+    float m_library_applet_volume{MaxAllowedVolume};
+    float m_transparent_volume_rate{MinAllowedVolume};
+
+    // Volume transition fade time in nanoseconds.
+    // e.g. If the main applet volume was 0% and was changed to 50%
+    //      with a fade of 50ns, then over the course of 50ns,
+    //      the volume will gradually fade up to 50%
+    std::chrono::nanoseconds m_fade_time_ns{0};
+};
+
+} // namespace Service::AM