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DataFormat.cs
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114 lines (103 loc) · 4.17 KB
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// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Runtime.InteropServices;
namespace SharpDX.DirectInput
{
internal partial class DataFormat
{
public DataFormat(DataFormatFlag flags)
{
Size = Utilities.SizeOf<__Native>();
ObjectSize = Utilities.SizeOf<DataObjectFormat.__Native>();
Flags = flags;
}
public DataFormat()
{
unsafe
{
Size = sizeof(__Native);
ObjectSize = sizeof(DataObjectFormat.__Native);
}
}
internal static __Native __NewNative()
{
unsafe
{
__Native temp = default(__Native);
temp.Size = sizeof(__Native);
temp.ObjectSize = sizeof(DataObjectFormat.__Native);
return temp;
}
}
public DataObjectFormat[] ObjectsFormat { get; set; }
// Internal native struct used for marshalling
[StructLayout(LayoutKind.Sequential, Pack = 0)]
internal partial struct __Native
{
public int Size;
public int ObjectSize;
public SharpDX.DirectInput.DataFormatFlag Flags;
public int DataSize;
public int ObjectArrayCount;
public System.IntPtr ObjectArrayPointer;
// Method to free unmanaged allocation
internal unsafe void __MarshalFree()
{
//if (ObjectArrayPointer != IntPtr.Zero)
// GCHandle.FromIntPtr(ObjectArrayPointer).Free();
}
}
// Method to free unmanaged allocation
internal unsafe void __MarshalFree(ref __Native @ref)
{
@ref.__MarshalFree();
}
// Method to marshal from native to managed struct
internal unsafe void __MarshalFrom(ref __Native @ref)
{
this.Size = @ref.Size;
this.ObjectSize = @ref.ObjectSize;
this.Flags = @ref.Flags;
this.DataSize = @ref.DataSize;
this.ObjectArrayCount = @ref.ObjectArrayCount;
this.ObjectArrayPointer = @ref.ObjectArrayPointer;
}
// Method to marshal from managed struct tot native
internal unsafe void __MarshalTo(ref __Native @ref)
{
@ref.Size = this.Size;
@ref.ObjectSize = this.ObjectSize;
@ref.Flags = this.Flags;
@ref.DataSize = this.DataSize;
@ref.ObjectArrayCount = 0;
@ref.ObjectArrayPointer = IntPtr.Zero;
if (ObjectsFormat != null && ObjectsFormat.Length > 0)
{
@ref.ObjectArrayCount = ObjectsFormat.Length;
var nativeDataFormats = new DataObjectFormat.__Native[ObjectsFormat.Length];
for(int i = 0; i < ObjectsFormat.Length; i++ )
ObjectsFormat[i].__MarshalTo(ref nativeDataFormats[i]);
var handle = GCHandle.Alloc(nativeDataFormats, GCHandleType.Pinned);
@ref.ObjectArrayPointer = handle.AddrOfPinnedObject();
}
}
}
}