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路径: \\game3dprogramming\materials\DarkPuzzle\DXUT\Optional\SDKsound.h
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//-----------------------------------------------------------------------------
// File: DXUTsound.h
//
// Copyright (c) Microsoft Corp. All rights reserved.
//-----------------------------------------------------------------------------
#ifndef DXUTSOUND_H
#define DXUTSOUND_H

//-----------------------------------------------------------------------------
// Header Includes
//-----------------------------------------------------------------------------
#include <dsound.h>

//-----------------------------------------------------------------------------
// Classes used by this header
//-----------------------------------------------------------------------------
class CSoundManager;
class CSound;
class CStreamingSound;
class CWaveFile;


//-----------------------------------------------------------------------------
// Typing macros 
//-----------------------------------------------------------------------------
#define DXUT_StopSound(s)         { if(s) s->Stop(); }
#define DXUT_PlaySound(s)         { if(s) s->Play( 0, 0 ); }
#define DXUT_PlaySoundLooping(s)  { if(s) s->Play( 0, DSBPLAY_LOOPING ); }


//-----------------------------------------------------------------------------
// Name: class CSoundManager
// Desc: 
//-----------------------------------------------------------------------------
class CSoundManager
{
protected:
    IDirectSound8* m_pDS;

public:
    CSoundManager();
    ~CSoundManager();

    HRESULT Initialize( HWND hWnd, DWORD dwCoopLevel );
    inline  LPDIRECTSOUND8 GetDirectSound() { return m_pDS; }
    HRESULT SetPrimaryBufferFormat( DWORD dwPrimaryChannels, DWORD dwPrimaryFreq, DWORD dwPrimaryBitRate );
    HRESULT Get3DListenerInterface( LPDIRECTSOUND3DLISTENER* ppDSListener );

    HRESULT Create( CSound** ppSound, LPWSTR strWaveFileName, DWORD dwCreationFlags = 0, GUID guid3DAlgorithm = GUID_NULL, DWORD dwNumBuffers = 1 );
    HRESULT CreateFromMemory( CSound** ppSound, BYTE* pbData, ULONG ulDataSize, LPWAVEFORMATEX pwfx, DWORD dwCreationFlags = 0, GUID guid3DAlgorithm = GUID_NULL, DWORD dwNumBuffers = 1 );
    HRESULT CreateStreaming( CStreamingSound** ppStreamingSound, LPWSTR strWaveFileName, DWORD dwCreationFlags, GUID guid3DAlgorithm, DWORD dwNotifyCount, DWORD dwNotifySize, HANDLE hNotifyEvent );
};


//-----------------------------------------------------------------------------
// Name: class CSound
// Desc: Encapsulates functionality of a DirectSound buffer.
//-----------------------------------------------------------------------------
class CSound
{
protected:
    LPDIRECTSOUNDBUFFER* m_apDSBuffer;
    DWORD                m_dwDSBufferSize;
    CWaveFile*           m_pWaveFile;
    DWORD                m_dwNumBuffers;
    DWORD                m_dwCreationFlags;

    HRESULT RestoreBuffer( LPDIRECTSOUNDBUFFER pDSB, BOOL* pbWasRestored );

public:
    CSound( LPDIRECTSOUNDBUFFER* apDSBuffer, DWORD dwDSBufferSize, DWORD dwNumBuffers, CWaveFile* pWaveFile, DWORD dwCreationFlags );
    virtual ~CSound();

    HRESULT Get3DBufferInterface( DWORD dwIndex, LPDIRECTSOUND3DBUFFER* ppDS3DBuffer );
    HRESULT FillBufferWithSound( LPDIRECTSOUNDBUFFER pDSB, BOOL bRepeatWavIfBufferLarger );
    LPDIRECTSOUNDBUFFER GetFreeBuffer();
    LPDIRECTSOUNDBUFFER GetBuffer( DWORD dwIndex );

    HRESULT Play( DWORD dwPriority = 0, DWORD dwFlags = 0, LONG lVolume = 0, LONG lFrequency = -1, LONG lPan = 0 );
    HRESULT Play3D( LPDS3DBUFFER p3DBuffer, DWORD dwPriority = 0, DWORD dwFlags = 0, LONG lFrequency = 0 );
    HRESULT Stop();
    HRESULT Reset();
    BOOL    IsSoundPlaying();
};


//-----------------------------------------------------------------------------
// Name: class CStreamingSound
// Desc: Encapsulates functionality to play a wave file with DirectSound.  
//       The Create() method loads a chunk of wave file into the buffer, 
//       and as sound plays more is written to the buffer by calling 
//       HandleWaveStreamNotification() whenever hNotifyEvent is signaled.
//-----------------------------------------------------------------------------
class CStreamingSound : public CSound
{
protected:
    DWORD m_dwLastPlayPos;
    DWORD m_dwPlayProgress;
    DWORD m_dwNotifySize;
    DWORD m_dwNextWriteOffset;
    BOOL  m_bFillNextNotificationWithSilence;

public:
    CStreamingSound( LPDIRECTSOUNDBUFFER pDSBuffer, DWORD dwDSBufferSize, CWaveFile* pWaveFile, DWORD dwNotifySize );
    ~CStreamingSound();

    HRESULT HandleWaveStreamNotification( BOOL bLoopedPlay );
    HRESULT Reset();
};

#endif // DXUTSOUND_H
SDKsound.h
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