1 files changed, 69 insertions, 0 deletions
diff --git a/src/core/hle/service/am/service/audio_controller.cpp b/src/core/hle/service/am/service/audio_controller.cpp
new file mode 100644
index 000000000..ad731c7bd
--- /dev/null
+++ b/src/core/hle/service/am/service/audio_controller.cpp
@@ -0,0 +1,69 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "core/hle/service/am/service/audio_controller.h"
+#include "core/hle/service/cmif_serialization.h"
+
+namespace Service::AM {
+
+IAudioController::IAudioController(Core::System& system_)
+    : ServiceFramework{system_, "IAudioController"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, D<&IAudioController::SetExpectedMasterVolume>, "SetExpectedMasterVolume"},
+        {1, D<&IAudioController::GetMainAppletExpectedMasterVolume>, "GetMainAppletExpectedMasterVolume"},
+        {2, D<&IAudioController::GetLibraryAppletExpectedMasterVolume>, "GetLibraryAppletExpectedMasterVolume"},
+        {3, D<&IAudioController::ChangeMainAppletMasterVolume>, "ChangeMainAppletMasterVolume"},
+        {4, D<&IAudioController::SetTransparentVolumeRate>, "SetTransparentVolumeRate"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+IAudioController::~IAudioController() = default;
+
+Result IAudioController::SetExpectedMasterVolume(f32 main_applet_volume,
+                                                 f32 library_applet_volume) {
+    LOG_DEBUG(Service_AM, "called. main_applet_volume={}, library_applet_volume={}",
+              main_applet_volume, library_applet_volume);
+
+    // Ensure the volume values remain within the 0-100% range
+    m_main_applet_volume = std::clamp(main_applet_volume, MinAllowedVolume, MaxAllowedVolume);
+    m_library_applet_volume = std::clamp(library_applet_volume, MinAllowedVolume, MaxAllowedVolume);
+
+    R_SUCCEED();
+}
+
+Result IAudioController::GetMainAppletExpectedMasterVolume(Out<f32> out_main_applet_volume) {
+    LOG_DEBUG(Service_AM, "called. main_applet_volume={}", m_main_applet_volume);
+    *out_main_applet_volume = m_main_applet_volume;
+    R_SUCCEED();
+}
+
+Result IAudioController::GetLibraryAppletExpectedMasterVolume(Out<f32> out_library_applet_volume) {
+    LOG_DEBUG(Service_AM, "called. library_applet_volume={}", m_library_applet_volume);
+    *out_library_applet_volume = m_library_applet_volume;
+    R_SUCCEED();
+}
+
+Result IAudioController::ChangeMainAppletMasterVolume(f32 volume, s64 fade_time_ns) {
+    LOG_DEBUG(Service_AM, "called. volume={}, fade_time_ns={}", volume, fade_time_ns);
+
+    m_main_applet_volume = std::clamp(volume, MinAllowedVolume, MaxAllowedVolume);
+    m_fade_time_ns = std::chrono::nanoseconds{fade_time_ns};
+
+    R_SUCCEED();
+}
+
+Result IAudioController::SetTransparentVolumeRate(f32 transparent_volume_rate) {
+    LOG_DEBUG(Service_AM, "called. transparent_volume_rate={}", transparent_volume_rate);
+
+    // Clamp volume range to 0-100%.
+    m_transparent_volume_rate =
+        std::clamp(transparent_volume_rate, MinAllowedVolume, MaxAllowedVolume);
+
+    R_SUCCEED();
+}
+
+} // namespace Service::AM