运行结果
程序的运行结果如下图所示。运行后会播放“cuc_ieschool.mpg”文件。需要注意的是，本程序并没有加入音频解码和播放的Filter，所以播放视频的时候是没有声音的。
可以通过修改源文件首部的宏定义ADD_MANUAL来设定是否手动添加Filter，如下所示。
//'1':Add filters manually //'0':Add filters automatically #define ADD_MANUAL 1
最简单的基于DirectShow的示例：视频播放器自定义版(三)
, CLSCTX_INPROC_SERVER,IID_IBaseFilter, (void**)(&pF_render));
if (FAILED(hr)){
printf(Failed to create Video Render.
);
return -1;
}
hr = pGraph->AddFilter(pF_render, LLei's Render);
if (FAILED(hr)){
printf(Failed to add Video Render to Filter Graph.
);
return -1;
}
//2. Connect Filters=======================
hr = connect_filters(pGraph, pF_source, pF_demuxer);
if (FAILED(hr)){
printf(Failed to link Source and Demuxer.
);
return -1;
}
hr = connect_filters(pGraph, pF_demuxer, pF_decoder);
if (FAILED(hr)){
printf(Failed to link Demuxer and Decoder.
);
return -1;
}
hr = connect_filters(pGraph, pF_decoder, pF_render);
if (FAILED(hr)){
printf(Failed to link Decoder and Render.
);
return -1;
}
pF_source->Release();
pF_demuxer->Release();
pF_decoder->Release();
pF_render->Release();
#else
IPin* Pin;
ULONG fetched;
// get output pin
IEnumPins* pEnumPins;
hr = pF_source->EnumPins(&pEnumPins);
hr = pEnumPins->Reset();
hr = pEnumPins->Next(1, &Pin, &fetched);
pEnumPins->Release();
// render pin, graph builder automatically complete rest works
hr = pGraph->Render(Pin);
#endif
if (SUCCEEDED(hr)){
// Run
hr = pControl->Run();
if (SUCCEEDED(hr)){
long evCode=0;
pEvent->WaitForCompletion(INFINITE, &evCode);
}
}
//Release
pControl->Release();
pEvent->Release();
pGraph->Release();
CoUninitialize();
return 0;
}
可以通过修改源文件首部的宏定义ADD_MANUAL来设定是否手动添加Filter，如下所示。
可以通过修改源文件首部的宏定义ADD_MANUAL来设定是否手动添加Filter，如下所示。