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//
// Device.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2013-2017 Jean-Philippe Bruyère
//
// 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 Linux.GBM
{
unsafe public class Device : IDisposable
{
#region pinvoke
[DllImport("gbm", EntryPoint = "gbm_create_device", CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr CreateDevice(int fd);
[DllImport("gbm", EntryPoint = "gbm_device_destroy", CallingConvention = CallingConvention.Cdecl)]
static extern void DestroyDevice(IntPtr gbm);
[DllImport("gbm", EntryPoint = "gbm_device_get_fd", CallingConvention = CallingConvention.Cdecl)]
static extern int DeviceGetFD(IntPtr gbm);
[DllImport("gbm", EntryPoint = "gbm_device_is_format_supported", CallingConvention = CallingConvention.Cdecl)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool IsFormatSupported(IntPtr gbm, SurfaceFormat format, SurfaceFlags usage);
#endregion
int fd_gpu;
internal IntPtr handle;
#region ctor
public Device (int _fd_gpu)
{
fd_gpu = _fd_gpu;
handle = CreateDevice(fd_gpu);
if (handle == IntPtr.Zero)
throw new NotSupportedException("[GBM] device creation failed.");
}
#endregion
#region IDisposable implementation
~Device(){
Dispose (false);
}
public void Dispose ()
{
Dispose (true);
GC.SuppressFinalize (this);
}
protected virtual void Dispose (bool disposing){
if (handle != IntPtr.Zero)
DestroyDevice (handle);
handle = IntPtr.Zero;
}
#endregion
}
}
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