Xune/UIX.RenderApi.Skia/Microsoft/Iris/Render/Protocols/Splash/Rendering/RemoteNullDevice.cs

// Decompiled with JetBrains decompiler
// Type: Microsoft.Iris.Render.Protocols.Splash.Rendering.RemoteNullDevice
// Assembly: UIX.RenderApi, Version=4.8.0.0, Culture=neutral, PublicKeyToken=ddd0da4d3e678217
// MVID: D47658B8-A8EA-43D6-8837-ECE823BFFFC1
// Assembly location: C:\Program Files\Zune\UIX.RenderApi.dll

using Microsoft.Iris.Render.Protocol;
using System.Runtime.InteropServices;

namespace Microsoft.Iris.Render.Protocols.Splash.Rendering
{
  internal class RemoteNullDevice : RemoteDevice
  {
    private static ushort[] s_priv_ByteOrder_Msg8_Create;

    protected RemoteNullDevice()
    {
    }

    public static unsafe RemoteNullDevice Create(
      ProtocolSplashRendering _priv_protocolInstance,
      IRenderHandleOwner _priv_owner,
      LocalDeviceCallback cb)
    {
      RenderPort port = _priv_protocolInstance.Port;
      RENDERHANDLE deviceClassHandle = _priv_protocolInstance.NullDevice_ClassHandle;
      RemoteNullDevice remoteNullDevice = new RemoteNullDevice(port, _priv_owner);
      uint num = (uint) sizeof (RemoteNullDevice.Msg8_Create);
      // ISSUE: untyped stack allocation
      byte* pMem = (byte*) __untypedstackalloc(1 * (int) num);
      RemoteNullDevice.Msg8_Create* msg8CreatePtr = (RemoteNullDevice.Msg8_Create*) pMem;
      msg8CreatePtr->_priv_size = num;
      msg8CreatePtr->_priv_msgid = 8U;
      msg8CreatePtr->_priv_objcb = cb.RenderHandle;
      msg8CreatePtr->_priv_ctxcb = port.Session.LocalContext;
      msg8CreatePtr->_priv_idObjectSubject = remoteNullDevice.m_renderHandle;
      if (port.ForeignByteOrder)
        MarshalHelper.SwapByteOrder(pMem, ref RemoteNullDevice.s_priv_ByteOrder_Msg8_Create, typeof (RemoteNullDevice.Msg8_Create), 0, 0);
      port.CreateRemoteObject(deviceClassHandle, remoteNullDevice.m_renderHandle, (Message*) msg8CreatePtr);
      return remoteNullDevice;
    }

    public static RemoteNullDevice CreateFromHandle(
      RenderPort port,
      RENDERHANDLE handle)
    {
      return new RemoteNullDevice(port, handle, true);
    }

    public static RemoteNullDevice CreateFromExternalHandle(
      RenderPort port,
      RENDERHANDLE handle,
      IRenderHandleOwner owner)
    {
      port.RegisterKnownHandle(owner, handle);
      return new RemoteNullDevice(port, handle, false);
    }

    protected RemoteNullDevice(RenderPort port, RENDERHANDLE handle, bool fFreeOnDispose)
      : base(port, handle, fFreeOnDispose)
    {
    }

    protected RemoteNullDevice(RenderPort port, IRenderHandleOwner owner)
      : base(port, owner)
    {
    }

    public override bool Equals(object other) => other is RemoteNullDevice && this.m_renderHandle == ((RemoteObject) other).m_renderHandle;

    public override int GetHashCode() => base.GetHashCode();

    [ComVisible(false)]
    private struct Msg8_Create
    {
      public uint _priv_size;
      public uint _priv_msgid;
      public RENDERHANDLE _priv_idObjectSubject;
      public RENDERHANDLE _priv_objcb;
      public ContextID _priv_ctxcb;
    }
  }
}