DirextX编程

开发平台：
Visual C++

DSBuffer.h：源码内容
							// Copyright (C) 1998-1999 DXGuide.  All Rights Reserved.
// File: DSBuffer.h
#ifndef _DSBUFFER__H
#define _DSBUFFER__H
#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
class	CWaveFile;
class	CDS3DListener;
class	CPackFileManager;
class	CDirectSound;
enum	CDirectSound::WAVEFORMATCODE;
class	CDSBuffer
{
	friend class	CDirectSound;
	friend class	CDS3DListener;
	friend class	CDirectMusic;
public:
enum	DSB_FLAG2
{
	DSB2_LOOP = 1L,
	DSB2_NO_FILE = 2L,
};
public:
	CDSBuffer(void);
	virtual	~CDSBuffer();
protected:
	bool	Create(CDirectSound*  pDS);	// primary
public:
	virtual bool	Create(CDirectSound*  pDS, LPCTSTR  lpszFileName,
		CPackFileManager*  pPackFileManager = NULL,
		int  nBuffer = 1,
		DWORD  dwFlags = DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_STATIC);
	bool	Create(CDirectSound*  pDS, WORD  wID,
		int  nBuffer = 1,
		DWORD  dwFlags = DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_STATIC);
protected:
	bool	Create(CDirectSound*  pDS, CWaveFile*  pWaveFile,
		int  nBuffer, DWORD  dwFlags);
	bool	CreatePrimarySoundBuffer(void);
	virtual bool	CreateSecondarySoundBuffer(void);
protected:
	bool	CreateSoundBuffer(
		DWORD  dwBufSize,
		DWORD  dwFreq,
		DWORD  dwBitsPerSample,
		WORD  wBlkAlign,
		bool  bStereo);
	bool	CreateSoundBuffer(DWORD  dwBufSize,
		WAVEFORMATEX*  pWaveFormatEX);
public:
	void	GetFormat(void);
	bool	SetFormat(CDirectSound::WAVEFORMATCODE  waveFormatCode);
	virtual HRESULT	FillSoundDataBuffer(DWORD  dwWriteBytes = 0);
	HRESULT	GetCaps(LPDSBCAPS  lpDSBufferCaps) const;
protected:
static CString	FormatCodeToText(CDirectSound::WAVEFORMATCODE  waveFormatCode);
static bool	FormatCodeToWFX(CDirectSound::WAVEFORMATCODE  waveFormatCode, PWAVEFORMATEX  pwfx);
	bool	FindHighestFormat(void);
public:
	CDirectSound::WAVEFORMATCODE	CalcWaveFormatCode(PWAVEFORMATEX  pwfx);
public:
	virtual bool	Play(void);
	virtual bool	Stop(int  nIndex = 0);
	virtual void	SetLoop(bool  bLoop);
	LONG	GetVolume(int  nIndex = 0) const;
	HRESULT	SetVolume(LONG  lVolume, int  nIndex = 0);
	LONG	GetPan(int  nIndex = 0) const;
	HRESULT	SetPan(LONG  lPan, int  nIndex = 0);
	DWORD	GetFrequency(int  nIndex = 0) const;
	HRESULT	SetFrequency(DWORD  dwFrequency, int  nIndex = 0);
public:
	// Batch parameter manipulation
	HRESULT	GetAllParameters(DS3DBUFFER*  pDS3DBuffer, int  nIndex = 0) const;
	HRESULT	SetAllParameters(const DS3DBUFFER*  pDS3DBuffer, DWORD  dwApply, int  nIndex = 0);
	// Distance
	HRESULT	GetMaxDistance(D3DVALUE*  pflMaxDistance, int  nIndex = 0) const;
	HRESULT	SetMaxDistance(D3DVALUE  pflMaxDistance, DWORD  dwApply, int  nIndex = 0);
	HRESULT	GetMinDistance(D3DVALUE*  pflMaxDistance, int  nIndex = 0) const;
	HRESULT	SetMinDistance(D3DVALUE  pflMaxDistance, DWORD  dwApply, int  nIndex = 0);
	// Operation mode
	HRESULT	GetMode(DWORD*  dwMode, int  nIndex = 0) const;
	HRESULT	SetMode(DWORD  dwMode, DWORD  dwApply, int  nIndex = 0);
	
	// Position
	HRESULT	GetPosition(D3DVECTOR*  vPosition, int  nIndex = 0) const;
	HRESULT	SetPosition(D3DVALUE  x, D3DVALUE  y, D3DVALUE  z, DWORD  dwApply, int  nIndex = 0);
	// Sound Projection Cones
	HRESULT	GetConeAngles(DWORD*  dwInsideConeAngle, DWORD*  dwOutsideConeAngle, int  nIndex = 0) const;
	HRESULT	SetConeAngles(DWORD  dwInsideConeAngle, DWORD  dwOutsideConeAngle, DWORD  dwApply, int  nIndex = 0);
	HRESULT	GetConeOrientation(D3DVECTOR*  vOrientation, int  nIndex = 0) const;
	HRESULT	SetConeOrientation(D3DVALUE  x, D3DVALUE  y, D3DVALUE  z, DWORD  dwApply, int  nIndex = 0);
	HRESULT	GetConeOutsideVolume(LONG*  lConeOutsideVolume, int  nIndex = 0) const;
	HRESULT	SetConeOutsideVolume(LONG  lConeOutsideVolume, DWORD  dwApply, int  nIndex = 0);
	// Velocity
	HRESULT	GetVelocity(D3DVECTOR*  vVelocity, int  nIndex = 0) const;
	HRESULT	SetVelocity(D3DVALUE  x, D3DVALUE  y, D3DVALUE  z, DWORD  dwApply, int  nIndex = 0);
protected:
	LPDIRECTSOUNDBUFFER	GetFreeBuffer(void);
	HRESULT	ReLoadSoundBuffer(void);
public:
#ifdef _DEBUG
static ULONG	m_ulDSBufferCounter;
#endif	// _DEBUG
protected:
	CDirectSound*	m_pDS;
	LPDIRECTSOUNDBUFFER*	m_ppDSB;
	union
	{
		LPDIRECTSOUND3DBUFFER*	m_ppDS3DB;
		CDS3DListener*	m_pDS3DListener;
	};
protected:
	int	m_nBuffers;
	int	m_nCurrent;
	union
	{
		CWaveFile*	m_pWaveFile;
		WAVEFORMATEX*	m_pWfxFormat;
	};
	CDirectSound::WAVEFORMATCODE	m_waveFormatCode;
	DWORD	m_dwDSBFlags2;
	DWORD	m_dwDSBFlags;
};
#endif	// _DSBUFFER__H

						