Starting audio common

Going to slowly make LLE-testing and HLE use it
(This commit is missing some proj files for windows)


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@2741 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/AudioCommon/Src/NullSoundStream.h

@@ -0,0 +1,42 @@
+// Copyright (C) 2003-2009 Dolphin Project.
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 2.0.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official SVN repository and contact information can be found at
+// http://code.google.com/p/dolphin-emu/
+
+#ifndef __NULLSOUNDSTREAM_H__
+#define __NULLSOUNDSTREAM_H__
+
+#include "SoundStream.h"
+
+class NullSound : public SoundStream
+{   
+public:
+    NullSound(int _sampleRate, StreamCallback _callback) :
+        SoundStream(_sampleRate, _callback) {}
+    
+    virtual ~NullSound() {}
+
+    static bool isValid() {
+        return true;
+    }  
+
+	virtual bool Start() { return true; }
+
+	virtual void Update() { 
+		(*callback)(NULL, 256 >> 2, 16, sampleRate, 2); 
+	}
+};
+
+#endif //__NULLSOUNDSTREAM_H__