2.0.7

CUETools.Codecs.CoreAudio/CoreAudioApi/MMDeviceEnumerator.cs

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+/*
+  LICENSE
+  -------
+  Copyright (C) 2007 Ray Molenkamp
+
+  This source code is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this source code or the software it produces.
+
+  Permission is granted to anyone to use this source code for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this source code must not be misrepresented; you must not
+     claim that you wrote the original source code.  If you use this source code
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original source code.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+// updated for use in NAudio
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Runtime.InteropServices;
+using NAudio.CoreAudioApi.Interfaces;
+
+namespace NAudio.CoreAudioApi
+{
+
+    /// <summary>
+    /// MM Device Enumerator
+    /// </summary>
+    public class MMDeviceEnumerator
+    {
+        private IMMDeviceEnumerator _realEnumerator;
+
+        /// <summary>
+        /// Enumerate Audio Endpoints
+        /// </summary>
+        /// <param name="dataFlow">Desired DataFlow</param>
+        /// <param name="dwStateMask">State Mask</param>
+        /// <returns>Device Collection</returns>
+        public MMDeviceCollection EnumerateAudioEndPoints(DataFlow dataFlow, DeviceState dwStateMask)
+        {
+            IMMDeviceCollection result;
+            Marshal.ThrowExceptionForHR(_realEnumerator.EnumAudioEndpoints(dataFlow, dwStateMask, out result));
+            return new MMDeviceCollection(result);
+        }
+
+        /// <summary>
+        /// Get Default Endpoint
+        /// </summary>
+        /// <param name="dataFlow">Data Flow</param>
+        /// <param name="role">Role</param>
+        /// <returns>Device</returns>
+        public MMDevice GetDefaultAudioEndpoint(DataFlow dataFlow, Role role)
+        {
+            IMMDevice _Device = null;
+            Marshal.ThrowExceptionForHR(((IMMDeviceEnumerator)_realEnumerator).GetDefaultAudioEndpoint(dataFlow, role, out _Device));
+            return new MMDevice(_Device);
+        }
+
+        /// <summary>
+        /// Get device by ID
+        /// </summary>
+        /// <param name="ID">Device ID</param>
+        /// <returns>Device</returns>
+        public MMDevice GetDevice(string ID)
+        {
+            IMMDevice _Device = null;
+            Marshal.ThrowExceptionForHR(((IMMDeviceEnumerator)_realEnumerator).GetDevice(ID, out _Device));
+            return new MMDevice(_Device);
+        }
+
+        /// <summary>
+        /// Creates a new MM Device Enumerator
+        /// </summary>
+        public MMDeviceEnumerator()
+        {
+            if (System.Environment.OSVersion.Version.Major < 6)
+            {
+                throw new NotSupportedException("This functionality is only supported on Windows Vista or newer.");
+            }
+            _realEnumerator = new MMDeviceEnumeratorComObject() as IMMDeviceEnumerator;
+        }
+    }
+}