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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 readonly Dictionary<int, IBinder> _registeredBinderObjects = new();
private static int _lastBinderId = 0;
private static readonly object _lock = new();
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);
}
}
}
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