VC播放mp3的方法

1、使用msi库

    #include <mmsystem.h>
    #pragma comment(lib,"winmm.lib") 
 
    .......
 
    //打开文件
    MCI_OPEN_PARMS mciOpen;
    mciOpen.lpstrDeviceType = _T("mpegvideo");
    mciOpen.lpstrElementName = _T("c://1.mp3");
    MCIERROR mciError = mciSendCommand(, MCI_OPEN, MCI_OPEN_TYPE | MCI_OPEN_ELEMENT, (DWORD)&mciOpen);
    if(mciError)
    {
        TCHAR buf[]={};
        mciGetErrorString(mciError, buf, );
        printf("%s/n",buf);
    }  
 
    //播放（异步）
    UINT DeviceID = mciOpen.wDeviceID ;
    MCI_PLAY_PARMS mciPlay;
    mciError = mciSendCommand(DeviceID, MCI_PLAY,  , (DWORD)&mciPlay);
    if(mciError)
    {
        printf("send MCI_PLAY command failed/n");
    }  
 
    //暂停
    //mciSendCommand(DeviceID, MCI_PAUSE, 0 , (DWORD)&mciPlay);
 
    //停止
    mciSendCommand(DeviceID, MCI_STOP, NULL , NULL);
    mciSendCommand(DeviceID, MCI_SEEK, MCI_SEEK_TO_START , NULL);
 
    //关闭
    //mciSendCommand(DeviceID, MCI_CLOSE, 0 , (DWORD)&mciPlay);
 
    //获得播放进度，仅为示例代码
     //MCI_STATUS_PARMS mciStatusParms;
     //mciStatusParms.dwItem=MCI_STATUS_POSITION;
     //mciSendCommand(m_wDeviceID,MCI_STATUS,MCI_WAIT|MCI_STATUS_ITEM,(DWORD)(LPVOID)&mciStatusParms);//关键,取得位置
     //int m_dPosition=mciStatusParms.dwReturn;
 
     //获得整个音频的时间长度，仅为示例代码
     //UINT DeviceID = mciOpen.wDeviceID ;
     //mciStatusParms.dwItem=MCI_STATUS_LENGTH;
     //mciSendCommand(DeviceID,MCI_STATUS,MCI_WAIT|MCI_STATUS_ITEM,(DWORD)(LPVOID)&mciStatusParms);//关键,取得长度
    // m_dLength=mciStatusParms.dwReturn;
 
     //在指定位置播放，仅为示例代码
     //MCI_PLAY_PARMS mciPlay;
     //mciPlay.dwFrom=m_dPosition;
     //mciError = mciSendCommand(m_wDeviceID,MCI_PLAY,MCI_FROM,(DWORD)&mciPlay);
 
     //控制音量，仅为示例代码
     //MCI_DGV_SETAUDIO_PARMS mciSetAudioPara;
     //mciSetAudioPara.dwItem = MCI_DGV_SETAUDIO_VOLUME;
     //mciSetAudioPara.dwValue = atoi(m_Volume.GetBuffer(m_Volume.GetLength()));//here is the value of the Volume(0--1000)
     //mciSendCommand(m_wDeviceID, MCI_SETAUDIO, MCI_DGV_SETAUDIO_VALUE | MCI_DGV_SETAUDIO_ITEM, (DWORD)(LPVOID)&mciSetAudioPara); 

2、使用vfw库

#include <vfw.h>
    #pragma comment(lib,"vfw32.lib")
 
    .......
 
    //打开文件
    CString filename = _T("c://1.mp3");
    HWND hwnd = MCIWndCreate(m_hWnd,NULL,MCIWNDF_NOPLAYBAR,filename);
    ::ShowWindow(hwnd,SW_HIDE);
 
    //设置音量
    MCIWndSetVolume(hwnd,);
 
    //播放（异步）
    MCIWndPlay(hwnd);
 
    //关闭
    //MCIWndClose(hwnd);

3、使用DirectShow

    #include   <dshow.h>
    #pragma comment(lib,"strmiids.lib")
 
    .......
 
    IGraphBuilder*   pGBuilder;
    IMediaControl*   pMControl;
    IMediaPosition*   pMPos;
    IMediaEvent*   pMEvent; 
 
    CoInitialize(NULL);   //初始化COM
    CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC, IID_IGraphBuilder,(void**)&pGBuilder);
    pGBuilder->QueryInterface(IID_IMediaControl,(void**)&pMControl);
    pGBuilder->QueryInterface(IID_IMediaEvent,(void**)&pMEvent);
    pGBuilder->QueryInterface(IID_IMediaPosition,(void**)&pMPos);
 
    pGBuilder->RenderFile(L"C://1.mp3",   NULL);   //调入文件 
 
    //播放MP3文件
    pMPos->put_CurrentPosition();   //移动到文件头
    pMControl->Run();   //播放（异步） 
 
    // 停止播放和释放对象
    /*pMControl->Stop();   //停止播放
    pMControl->Release();
    pMControl=NULL;
    pMEvent->Release();
    pMEvent=NULL;
    pMPos->Release();
    pMPos=NULL;
    pGBuilder->Release();
    pGBuilder=NULL;
    CoUninitialize();   //释放COM  */