控制台程序,未写UI,有兴趣的话,可以写写UI
软件:VS2010
代码如下:
#include<Windows.h>
#include<iomanip>
#include<DShow.h>
#include<iostream>
using namespace std;
#pragma comment(lib,"strmiids.lib")
IGraphBuilder *g_pGraphBuilder=NULL; //帮助建立滤波图,滤波过滤图是一组对象或接口的集合,用于处理某种媒体文件。
IMediaControl *g_pMediaControl=NULL; //控制数据在滤波图中的流程,使用该接口控制音乐的回放。
IMediaEvent *g_pMediaEvents=NULL; //从滤波图中获取事件及通告,当希望知道在滤波图中发生了什么的时候这个对象很有用,比如希望知道一个音乐是否仍然在播放或者已经停止播放。
IBasicAudio *g_pBasicAudio=NULL; //控制音量
IMediaSeeking *g_pMediaSeeking=NULL; //获取/控制 播放位置
void Release()
{
if(g_pMediaControl!=NULL)g_pMediaControl->Stop();
if(g_pMediaEvents!=NULL)
{
g_pMediaEvents->Release();
g_pMediaEvents = NULL;
}
if(g_pMediaControl!=NULL)
{
g_pMediaControl->Release();
g_pMediaControl = NULL;
}
if(g_pGraphBuilder!=NULL)
{
g_pGraphBuilder->Release();
g_pGraphBuilder = NULL;
}
}
void PlayMusic(LPCWSTR fileName)
{
//如果是中文则不能简单的使用 L 转换,需使用mbstowcs函数或者MultiByteToWideChar进行转换
g_pGraphBuilder->RenderFile(fileName,NULL);
//g_pMediaControl有Run/Stop/Pause/StopWhenReady等函数,可以写个UI控制
g_pMediaControl->Run();
}
void HandleEvent()
{
while(TRUE)
{
long event_code, param1, param2;
if(SUCCEEDED(g_pMediaEvents->GetEvent(&event_code, ¶m1, ¶m2, 1)))
{
if(event_code == EC_COMPLETE)
{
//重新开始播放也可用g_pMediaSeeking的SetPositions来实现
g_pMediaControl->Stop();
PlayMusic(L"ten minutes.mp3");
}
g_pMediaEvents->FreeEventParams(event_code, param1, param2);
}
__int64 Len=-1,Pos=-1;
g_pMediaSeeking->GetDuration (&Len);
g_pMediaSeeking->GetCurrentPosition(&Pos);
cout<<"播放进度:"<<"【"<<setw(8)<<(double)Pos/Len*100<<"%】"<<endl;
Sleep(500);
}
}
int main()
{
CoInitialize(NULL);
if(FAILED(CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, IID_IGraphBuilder,(void**)&g_pGraphBuilder)))
{
cout<<"CoCreateInstance failed"<<endl;
goto END;
}
g_pGraphBuilder->QueryInterface(IID_IMediaControl, (void**)&g_pMediaControl);
g_pGraphBuilder->QueryInterface(IID_IMediaEvent, (void**)&g_pMediaEvents);
g_pGraphBuilder->QueryInterface(IID_IBasicAudio, (void**)&g_pBasicAudio);
g_pGraphBuilder->QueryInterface(IID_IMediaSeeking, (void**)&g_pMediaSeeking);
//使用DShow可以同时播放几个文件,实现混音效果!而mciSendCommand则不能
PlayMusic(L"ten minutes.mp3");
//PlayMusic(L"bg.mp3");
//事件处理(循环播放、显示播放进度等)
HandleEvent();
END:
system("pause");
Release();
CoUninitialize();
return 0;
}