1 files changed, 109 insertions, 0 deletions
diff --git a/src/Ryujinx.HLE/HOS/Services/SurfaceFlinger/HOSBinderDriverServer.cs b/src/Ryujinx.HLE/HOS/Services/SurfaceFlinger/HOSBinderDriverServer.cs
new file mode 100644
index 00000000..d6c98be1
--- /dev/null
+++ b/src/Ryujinx.HLE/HOS/Services/SurfaceFlinger/HOSBinderDriverServer.cs
@@ -0,0 +1,109 @@
+using Ryujinx.Common.Logging;
+using Ryujinx.HLE.HOS.Kernel.Threading;
+using System;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS.Services.SurfaceFlinger
+{
+    class HOSBinderDriverServer : IHOSBinderDriver
+    {
+        private static Dictionary<int, IBinder> _registeredBinderObjects = new Dictionary<int, IBinder>();
+
+        private static int _lastBinderId = 0;
+
+        private static object _lock = new object();
+
+        public static int RegisterBinderObject(IBinder binder)
+        {
+            lock (_lock)
+            {
+                _lastBinderId++;
+
+                _registeredBinderObjects.Add(_lastBinderId, binder);
+
+                return _lastBinderId;
+            }
+        }
+
+        public static void UnregisterBinderObject(int binderId)
+        {
+            lock (_lock)
+            {
+                _registeredBinderObjects.Remove(binderId);
+            }
+        }
+
+        public static int GetBinderId(IBinder binder)
+        {
+            lock (_lock)
+            {
+                foreach (KeyValuePair<int, IBinder> pair in _registeredBinderObjects)
+                {
+                    if (ReferenceEquals(binder, pair.Value))
+                    {
+                        return pair.Key;
+                    }
+                }
+
+                return -1;
+            }
+        }
+
+        private static IBinder GetBinderObjectById(int binderId)
+        {
+            lock (_lock)
+            {
+                if (_registeredBinderObjects.TryGetValue(binderId, out IBinder binder))
+                {
+                    return binder;
+                }
+
+                return null;
+            }
+        }
+
+        protected override ResultCode AdjustRefcount(int binderId, int addVal, int type)
+        {
+            IBinder binder = GetBinderObjectById(binderId);
+
+            if (binder == null)
+            {
+                Logger.Error?.Print(LogClass.SurfaceFlinger, $"Invalid binder id {binderId}");
+
+                return ResultCode.Success;
+            }
+
+            return binder.AdjustRefcount(addVal, type);
+        }
+
+        protected override void GetNativeHandle(int binderId, uint typeId, out KReadableEvent readableEvent)
+        {
+            IBinder binder = GetBinderObjectById(binderId);
+
+            if (binder == null)
+            {
+                readableEvent = null;
+
+                Logger.Error?.Print(LogClass.SurfaceFlinger, $"Invalid binder id {binderId}");
+
+                return;
+            }
+
+            binder.GetNativeHandle(typeId, out readableEvent);
+        }
+
+        protected override ResultCode OnTransact(int binderId, uint code, uint flags, ReadOnlySpan<byte> inputParcel, Span<byte> outputParcel)
+        {
+            IBinder binder = GetBinderObjectById(binderId);
+
+            if (binder == null)
+            {
+                Logger.Error?.Print(LogClass.SurfaceFlinger, $"Invalid binder id {binderId}");
+
+                return ResultCode.Success;
+            }
+
+            return binder.OnTransact(code, flags, inputParcel, outputParcel);
+        }
+    }
+}