81 lines
3.1 KiB
C#
81 lines
3.1 KiB
C#
// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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namespace SharpDX.DirectSound
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{
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/// <summary>
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/// Enumerator callback for DirectSound and DirectCaptureSound.
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/// </summary>
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internal class EnumDelegateCallback
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{
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private IntPtr _nativePointer;
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private DirectSoundEnumDelegate _callback;
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/// <summary>
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/// Initializes a new instance of the <see cref="EnumDelegateCallback"/> class.
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/// </summary>
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public EnumDelegateCallback()
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{
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_callback = new DirectSoundEnumDelegate(DirectSoundEnumImpl);
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_nativePointer = Marshal.GetFunctionPointerForDelegate(_callback);
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Informations = new List<DeviceInformation>();
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}
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/// <summary>
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/// Natives the pointer.
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/// </summary>
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/// <returns></returns>
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public IntPtr NativePointer
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{
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get { return _nativePointer; }
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}
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/// <summary>
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/// Gets or sets the device informations.
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/// </summary>
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/// <value>The device informations.</value>
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public List<DeviceInformation> Informations { get; private set; }
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// typedef BOOL (CALLBACK *LPDSENUMCALLBACKW)(LPGUID, LPCWSTR, LPCWSTR, LPVOID);
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[UnmanagedFunctionPointer(CallingConvention.StdCall)]
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private delegate int DirectSoundEnumDelegate(IntPtr guid, IntPtr description, IntPtr module, IntPtr lpContext);
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private int DirectSoundEnumImpl(IntPtr guidPtr, IntPtr description, IntPtr module, IntPtr lpContext)
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{
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unsafe
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{
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Guid guid;
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if (guidPtr == IntPtr.Zero)
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guid = Guid.Empty;
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else
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{
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guid = *((Guid*) guidPtr);
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}
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Informations.Add(new DeviceInformation(guid, Marshal.PtrToStringUni( description), Marshal.PtrToStringUni( module)));
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}
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// Return true to continue enumerate the devices.
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return 1;
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}
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}
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}
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