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DeviceImageHeader.cs
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116 lines (105 loc) · 4.24 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
{
public partial class DeviceImageHeader
{
/// <summary>
/// Initializes a new instance of the <see cref="DeviceImageHeader"/> class.
/// </summary>
public DeviceImageHeader()
{
unsafe
{
Size = sizeof(__Native);
SizeImageInfo = sizeof(DeviceImage.__Native);
}
}
public DeviceImage[] Images { get; private set; }
internal static __Native __NewNative()
{
unsafe
{
__Native temp = default(__Native);
temp.Size = sizeof(__Native);
temp.SizeImageInfo = sizeof(DeviceImage.__Native);
return temp;
}
}
// Internal native struct used for marshalling
[StructLayout(LayoutKind.Sequential, Pack = 0)]
internal partial struct __Native
{
public int Size;
public int SizeImageInfo;
public int ViewCount;
public int ButtonCount;
public int AxeCount;
public int PovCount;
public int BufferSize;
public int BufferUsed;
public System.IntPtr ImageInfoArrayPointer;
}
// Method to free native struct
internal unsafe void __MarshalFree(ref __Native @ref)
{
}
// Method to marshal from native to managed struct
internal unsafe void __MarshalFrom(ref __Native @ref)
{
this.Size = @ref.Size;
this.SizeImageInfo = @ref.SizeImageInfo;
this.ViewCount = @ref.ViewCount;
this.ButtonCount = @ref.ButtonCount;
this.AxeCount = @ref.AxeCount;
this.PovCount = @ref.PovCount;
this.BufferSize = @ref.BufferSize;
this.BufferUsed = @ref.BufferUsed;
this.ImageInfoArrayPointer = @ref.ImageInfoArrayPointer;
if (this.BufferSize > 0 && this.ImageInfoArrayPointer != IntPtr.Zero)
{
int nbImageInfoElements = BufferSize/ sizeof(DeviceImage.__Native);
Images = new DeviceImage[nbImageInfoElements];
var pImageInfo = (DeviceImage.__Native*)this.ImageInfoArrayPointer;
for (int i = 0; i < Images.Length; i++)
{
var image = new DeviceImage();
image.__MarshalFrom(ref *pImageInfo);
pImageInfo++;
}
}
}
// Method to marshal from managed struct tot native
internal unsafe void __MarshalTo(ref __Native @ref)
{
@ref.Size = this.Size;
@ref.SizeImageInfo = this.SizeImageInfo;
@ref.ViewCount = this.ViewCount;
@ref.ButtonCount = this.ButtonCount;
@ref.AxeCount = this.AxeCount;
@ref.PovCount = this.PovCount;
@ref.BufferSize = this.BufferSize;
@ref.BufferUsed = this.BufferUsed;
@ref.ImageInfoArrayPointer = this.ImageInfoArrayPointer;
}
}
}