www.pudn.com > ATimeToKill.rar > audiosystem.h

#ifndef __AUDIOSYSTEM_H 
#define __AUDIOSYSTEM_H 
 
/* 
	AUDIOSYSTEM.H 
 
	The CAudio and CAudioSystem classes 
 
	Author: Kevin Hawkins 
	Date: 3/28/2001 
	Description: The CAudio class represents a single sound object, such 
			   as a song, ambient sound, an object's sound, etc. 
			   The CAudioSystem class is the controller for creating and 
			   playing CAudio objects. 
 
*/ 
 
//#include                // standard Windows app include 
#include                // DirectMusic includes 
#include  
#include              // for D3DVECTOR 
#include                  // for GUID_NULL 
 
/* 
	The CAudio class 
*/ 
class CAudio 
{ 
private: 
	IDirectMusicSegment8 *dmusicSegment;      // the segment 
 
	// The 3D buffer might not be used (e.g. background music). 
	// It should only be used for 3D positional sounds. 
	IDirectSound3DBuffer *ds3DBuffer; 
 
	bool is3DSound;	// true if this is a 3D sound 
 
protected: 
 
public: 
	CAudio() { dmusicSegment = NULL; ds3DBuffer = NULL; is3DSound = false; } 
	~CAudio()  
	{ 
		if (dmusicSegment != NULL) 
		{ 
			dmusicSegment->Release();  
			dmusicSegment = NULL; 
		} 
 
		if (ds3DBuffer != NULL) 
		{ 
			ds3DBuffer->Release();  
			ds3DBuffer = NULL; 
		} 
	} 
 
	void SetSegment(IDirectMusicSegment8 *seg) { dmusicSegment = seg; } 
	IDirectMusicSegment8 *GetSegment() { return dmusicSegment; } 
 
	void Set3DBuffer(IDirectSound3DBuffer *dsBuff); 
	IDirectSound3DBuffer *Get3DBuffer() { return ds3DBuffer; } 
 
	bool Is3DSound() { return is3DSound; } 
	void Set3DSound(bool b) { is3DSound = b; } 
 
	void Set3DParams(float minDistance, float maxDistance); 
	void Set3DPos(float x, float y, float z); 
}; 
 
/* 
	The CAudioSystem class 
*/ 
class CAudioSystem 
{ 
private: 
	IDirectMusicLoader8 *dmusicLoader;                   // the loader 
	IDirectMusicPerformance8 *dmusicPerformance;    // the performance 
	IDirectMusicAudioPath8 *dmusic3DAudioPath;       // the audiopath 
	IDirectSound3DListener8 *ds3DListener;              // 3d listener 
 
	DS3DLISTENER dsListenerParams;                      // 3d listener properties 
 
public: 
	CAudioSystem(); 
	~CAudioSystem(); 
 
	bool InitDirectXAudio(HWND hwnd); 
	IDirectSound3DBuffer8 *Create3DBuffer(); 
	CAudio *Create(char *filename, bool is3DSound); 
	IDirectMusicSegment8 *CreateSegment(char *filename, bool is3DSound); 
	 
	void Play(CAudio *audio, DWORD numRepeats); 
	void Stop(CAudio *audio); 
 
	void PlaySegment(IDirectMusicSegment8 *dmSeg, bool is3DSound, DWORD numRepeats); 
	void StopSegment(IDirectMusicSegment8 *dmSeg); 
	void Shutdown(); 
 
	void SetListenerPos(float cameraX, float cameraY, float cameraZ); 
	void SetListenerRolloff(float rolloff); 
	void SetListenerOrientation(float forwardX, float forwardY, float forwardZ, 
						   float topX, float topY, float topZ) 
	{ 
		ds3DListener->SetOrientation(forwardX, forwardY, -forwardZ, topX, topY, topZ, DS3D_IMMEDIATE); 
	} 
 
	IDirectMusicPerformance8 *GetPerformance() { return dmusicPerformance; } 
}; 
 
 
#endif