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(0, MCI_OPEN, MCI_OPEN_TYPE | MCI_OPEN_ELEMENT, (DWORD)&mciOpen); if(mciError) { TCHAR buf[128]={0}; mciGetErrorString(mciError, buf, 128); printf("%s/n",buf); } //播放（异步）UINT DeviceID = mciOpen.wDeviceID ; MCI_PLAY_PARMS mciPlay; mciError = mciSendCommand(DeviceID, MCI_PLAY, 0 , (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,1000);//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(0); //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 */
这三种试唯一的问题是的播放有些MP3失败例如网易云音乐上下载的MP3无法播放。