3 files changed, 190 insertions, 0 deletions
diff --git a/src/Ryujinx.Horizon/Lbl/Ipc/LblController.cs b/src/Ryujinx.Horizon/Lbl/Ipc/LblController.cs
new file mode 100644
index 00000000..0a27d5ef
--- /dev/null
+++ b/src/Ryujinx.Horizon/Lbl/Ipc/LblController.cs
@@ -0,0 +1,130 @@
+using Ryujinx.Horizon.Common;
+using Ryujinx.Horizon.Sdk.Lbl;
+using Ryujinx.Horizon.Sdk.Sf;
+
+namespace Ryujinx.Horizon.Lbl.Ipc
+{
+    partial class LblController : ILblController
+    {
+        private bool _vrModeEnabled;
+        private float _currentBrightnessSettingForVrMode;
+
+        [CmifCommand(17)]
+        public Result SetBrightnessReflectionDelayLevel(float unknown0, float unknown1)
+        {
+            // NOTE: Stubbed in system module.
+
+            return Result.Success;
+        }
+
+        [CmifCommand(18)]
+        public Result GetBrightnessReflectionDelayLevel(out float unknown1, float unknown0)
+        {
+            // NOTE: Stubbed in system module.
+
+            unknown1 = 0.0f;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(19)]
+        public Result SetCurrentBrightnessMapping(float unknown0, float unknown1, float unknown2)
+        {
+            // NOTE: Stubbed in system module.
+
+            return Result.Success;
+        }
+
+        [CmifCommand(20)]
+        public Result GetCurrentBrightnessMapping(out float unknown0, out float unknown1, out float unknown2)
+        {
+            // NOTE: Stubbed in system module.
+
+            unknown0 = 0.0f;
+            unknown1 = 0.0f;
+            unknown2 = 0.0f;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(21)]
+        public Result SetCurrentAmbientLightSensorMapping(float unknown0, float unknown1, float unknown2)
+        {
+            // NOTE: Stubbed in system module.
+
+            return Result.Success;
+        }
+
+        [CmifCommand(22)]
+        public Result GetCurrentAmbientLightSensorMapping(out float unknown0, out float unknown1, out float unknown2)
+        {
+            // NOTE: Stubbed in system module.
+
+            unknown0 = 0.0f;
+            unknown1 = 0.0f;
+            unknown2 = 0.0f;
+
+            return Result.Success;
+        }
+
+        [CmifCommand(24)]
+        public Result SetCurrentBrightnessSettingForVrMode(float currentBrightnessSettingForVrMode)
+        {
+            if (float.IsNaN(currentBrightnessSettingForVrMode) || float.IsInfinity(currentBrightnessSettingForVrMode))
+            {
+                _currentBrightnessSettingForVrMode = 0.0f;
+            }
+            else
+            {
+                _currentBrightnessSettingForVrMode = currentBrightnessSettingForVrMode;
+            }
+
+            return Result.Success;
+        }
+
+        [CmifCommand(25)]
+        public Result GetCurrentBrightnessSettingForVrMode(out float currentBrightnessSettingForVrMode)
+        {
+            if (float.IsNaN(_currentBrightnessSettingForVrMode) || float.IsInfinity(_currentBrightnessSettingForVrMode))
+            {
+                currentBrightnessSettingForVrMode = 0.0f;
+            }
+            else
+            {
+                currentBrightnessSettingForVrMode = _currentBrightnessSettingForVrMode;
+            }
+
+            return Result.Success;
+        }
+
+        [CmifCommand(26)]
+        public Result EnableVrMode()
+        {
+            _vrModeEnabled = true;
+
+            // NOTE: The service checks _vrModeEnabled field value in a thread and then changes the screen brightness.
+            //       Since we don't support that, it's fine to do nothing.
+
+            return Result.Success;
+        }
+
+        [CmifCommand(27)]
+        public Result DisableVrMode()
+        {
+            _vrModeEnabled = false;
+
+            // NOTE: The service checks _vrModeEnabled field value in a thread and then changes the screen brightness.
+            //       Since we don't support that, it's fine to do nothing.
+
+            return Result.Success;
+        }
+
+        [CmifCommand(28)]
+        public Result IsVrModeEnabled(out bool vrModeEnabled)
+        {
+            vrModeEnabled = _vrModeEnabled;
+
+            return Result.Success;
+        }
+    }
+}
diff --git a/src/Ryujinx.Horizon/Lbl/LblIpcServer.cs b/src/Ryujinx.Horizon/Lbl/LblIpcServer.cs
new file mode 100644
index 00000000..53e74d51
--- /dev/null
+++ b/src/Ryujinx.Horizon/Lbl/LblIpcServer.cs
@@ -0,0 +1,43 @@
+using Ryujinx.Horizon.Lbl.Ipc;
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using Ryujinx.Horizon.Sdk.Sm;
+
+namespace Ryujinx.Horizon.Lbl
+{
+    class LblIpcServer
+    {
+        private const int MaxSessionsCount = 5;
+
+        private const int PointerBufferSize = 0;
+        private const int MaxDomains = 0;
+        private const int MaxDomainObjects = 0;
+        private const int MaxPortsCount = 1;
+
+        private static readonly ManagerOptions _managerOptions = new(PointerBufferSize, MaxDomains, MaxDomainObjects, false);
+
+        private SmApi _sm;
+        private ServerManager _serverManager;
+
+        public void Initialize()
+        {
+            HeapAllocator allocator = new();
+
+            _sm = new SmApi();
+            _sm.Initialize().AbortOnFailure();
+
+            _serverManager = new ServerManager(allocator, _sm, MaxPortsCount, _managerOptions, MaxSessionsCount);
+
+            _serverManager.RegisterObjectForServer(new LblController(), ServiceName.Encode("lbl"), MaxSessionsCount);
+        }
+
+        public void ServiceRequests()
+        {
+            _serverManager.ServiceRequests();
+        }
+
+        public void Shutdown()
+        {
+            _serverManager.Dispose();
+        }
+    }
+}
diff --git a/src/Ryujinx.Horizon/Lbl/LblMain.cs b/src/Ryujinx.Horizon/Lbl/LblMain.cs
new file mode 100644
index 00000000..f471f31b
--- /dev/null
+++ b/src/Ryujinx.Horizon/Lbl/LblMain.cs
@@ -0,0 +1,17 @@
+namespace Ryujinx.Horizon.Lbl
+{
+    class LblMain : IService
+    {
+        public static void Main(ServiceTable serviceTable)
+        {
+            LblIpcServer ipcServer = new();
+
+            ipcServer.Initialize();
+
+            serviceTable.SignalServiceReady();
+
+            ipcServer.ServiceRequests();
+            ipcServer.Shutdown();
+        }
+    }
+}