在游戏中播放背景音乐(MP3)的类(类已写好,可直接调用)

daiyuancan

1、Sound.cpp

#include ".\sound.h"

Sound::Sound()
{
m_pGraph = NULL;
m_pMediaControl = NULL;
m_pMediaPosition = NULL;
volume = -1000;

CoInitialize(NULL);
CoCreateInstance(CLSID_FilterGraph, NULL,
CLSCTX_INPROC, IID_IGraphBuilder, (void**)&m_pGraph);

m_pGraph->QueryInterface(IID_IMediaControl, (void**)&m_pMediaControl);

m_pGraph->QueryInterface(IID_IMediaPosition, (void**)&m_pMediaPosition);

m_enumFormat = MP3;
}

Sound::~Sound(void)
{
SafeRelease(m_pGraph);
SafeRelease(m_pMediaControl);
SafeRelease(m_pMediaPosition);
CoUninitialize();
}

void Sound:oadSound(const char* szSoundFileName)
{
WCHAR wstrSoundPath[MAX_PATH];
CHAR strSoundPath[MAX_PATH];

GetCurrentDirectory(MAX_PATH, strSoundPath);
strcat(strSoundPath, "\\music\\"); // 此为文件夹名称
strcat(strSoundPath, szSoundFileName);

MultiByteToWideChar(CP_ACP, 0, strSoundPath, -1, wstrSoundPath, MAX_PATH);

m_pGraph->RenderFile(wstrSoundPath, NULL);
}

// 开始播放
void Sound:lay()
{
m_pMediaPosition->put_CurrentPosition(0);
m_pMediaControl->Run();
}

//播放停止

void Sound::Stop()
{
m_pMediaControl->Stop();
}

// 播放测试,是否到达尾部

bool Sound::IsPlaying()
{
REFTIME refPosition;
REFTIME refDuration;

m_pMediaPosition->get_CurrentPosition(&refPosition);
m_pMediaPosition->get_Duration(&refDuration);

if(refPosition < refDuration)
{
return true;
}
else
{
return false;
}
}

2、sound.h

#pragma once
#include "header.h"
#include <dshow.h>
#include <dsound.h>
#include <dmusici.h>

#pragma comment (lib,"Strmiids.lib")
#pragma comment (lib,"Quartz.lib")

#define SafeRelease(pInterface) if(pInterface != NULL) {pInterface->Release(); pInterface=NULL;}
#define SafeDelete(pObject) if(pObject != NULL) {delete pObject; pObject=NULL;}

class Sound
{
public:
enum Format {Unknown, MP3, WavMidi};
WCHAR wstrSoundPath[MAX_PATH];
CHAR strSoundPath[MAX_PATH];
IGraphBuilder* m_pGraph;
IMediaControl* m_pMediaControl;
IMediaPosition* m_pMediaPosition;
LPDIRECTSOUNDBUFFER pSBuf;
Format m_enumFormat;
int m_dwFrames;

public:
Sound();
~Sound(void);
void LoadSound(const char* szSoundFileName);
void Play();
void Stop();
bool IsPlaying();
};

3、调用方法

// 循环播放音乐
if(m_dwFrames == 1)
{
m_Sound->LoadSound("xiuyou.mp3"); // 加载音乐
m_Sound->lay();
}
else if(m_dwFrames > 1)
{
if(!m_Sound->IsPlaying())
{
m_Sound->LoadSound("xiuyou.mp3"); // 加载音乐
m_Sound->lay();
}
}

鼯鼠

非常感谢你的共享！