Added AudioDeviceErrorChecker modeled after OpenTK.Graphics.

Source/OpenTK/Audio/AudioDeviceErrorChecker.cs

@@ -0,0 +1,83 @@
+#region License
+//
+// The Open Toolkit Library License
+//
+// Copyright (c) 2006 - 2009 the Open Toolkit library.
+//
+// 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.
+//
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace OpenTK.Audio
+{
+    struct AudioDeviceErrorChecker : IDisposable
+    {
+        #region Fields
+
+        readonly IntPtr Device;
+        static readonly string ErrorString = "Device {0} reported {1}.";
+
+        #endregion
+
+        #region Constructors
+
+        public AudioDeviceErrorChecker(IntPtr device)
+        {
+            if (device == IntPtr.Zero)
+                throw new AudioDeviceException();
+
+            Device = device;
+        }
+
+        #endregion
+
+        #region IDisposable Members
+
+        public void Dispose()
+        {
+            AlcError err = Alc.GetError(Device);
+            switch (err)
+            {
+                case AlcError.OutOfMemory:
+                    throw new OutOfMemoryException(String.Format(ErrorString, Device, err));
+                
+                case AlcError.InvalidValue:
+                    throw new AudioValueException(String.Format(ErrorString, Device, err));
+                
+                case AlcError.InvalidDevice:
+                    throw new AudioDeviceException(String.Format(ErrorString, Device, err));
+                
+                case AlcError.InvalidContext:
+                    throw new AudioContextException(String.Format(ErrorString, Device, err));
+                
+                case AlcError.NoError:
+                default:
+                    // everything went fine, do nothing
+                    break;
+            }
+        }
+
+        #endregion
+    }
+}