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/DSoundStream.h

@@ -0,0 +1,89 @@
+// 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 __DSOUNDSTREAM_H__
+#define __DSOUNDSTREAM_H__
+#include "SoundStream.h"
+
+#include "Thread.h"
+
+#ifdef _WIN32
+#include "stdafx.h"
+
+#include <mmsystem.h>
+#include <dsound.h>
+
+#define BUFSIZE 32768
+#define MAXWAIT 70   //ms
+
+#endif
+
+class DSound : public SoundStream
+{
+#ifdef _WIN32
+    Common::Thread *thread;
+    Common::CriticalSection soundCriticalSection;
+    Common::Event soundSyncEvent;
+    void  *hWnd;
+
+    IDirectSound8* ds;
+    IDirectSoundBuffer* dsBuffer;
+    
+    int bufferSize;     //i bytes
+    int totalRenderedBytes;
+    
+    // playback position
+    int currentPos;
+    int lastPos;
+    short realtimeBuffer[1024 * 1024];
+    
+    inline int FIX128(int x) {
+		return x & (~127);
+    }
+
+    inline int ModBufferSize(int x) {
+		return (x + bufferSize) % bufferSize;
+    }
+
+    bool CreateBuffer();
+    bool WriteDataToBuffer(DWORD dwOffset, char* soundData,
+			   DWORD dwSoundBytes);
+
+public:
+    DSound(int _sampleRate, StreamCallback _callback) :
+        SoundStream(_sampleRate, _callback) {}
+    
+    DSound(int _sampleRate, StreamCallback _callback, void *_hWnd) :
+	SoundStream(_sampleRate, _callback), hWnd(_hWnd) {}
+    
+    virtual ~DSound() {}
+ 
+	virtual bool Start();
+    virtual void SoundLoop();
+    virtual void Stop();
+    static bool isValid() { return true; }
+    virtual bool usesMixer() const { return true; }
+    virtual void Update();
+
+#else
+public:
+    DSound(int _sampleRate, StreamCallback _callback, void *hWnd = NULL) :
+        SoundStream(_sampleRate, _callback) {}
+#endif
+};
+
+#endif //__DSOUNDSTREAM_H__