directshow AVI 파일의 시간별 오디오 추출

void AudioExtraction(int Second)
{
	IMediaControl			*pControl			= NULL;
	ICaptureGraphBuilder2           *pBuilder			= NULL;// 
	IGraphBuilder			*pGraph				= NULL;  // 
	IAMTimeline			*pTimeline			= NULL;		// 
	IAMTimelineObj			*pAudioGroupObj			= NULL;	// 
	IRenderEngine			*pRenderEngine			= NULL;	// 
	IMediaEvent			*pEvent				= NULL;  // 
	IBaseFilter			*pWaveDest			= NULL;		// WAV
	IBaseFilter			*pWriter			= NULL;			// 
	IFileSinkFilter			*pSink				= NULL; 
	IAMTimelineObj			*pSource10bj			= NULL;
	IAMTimelineGroup		*pAudioGroup			= NULL;
	IAMTimelineObj			*pTrack10bj			= NULL;
	IAMTimelineSrc			*pSource1Src			= NULL;
	IAMTimelineTrack		*pTrack1			= NULL;
	IAMTimelineComp			*pRootComp			= NULL;
	IPin				*pin				= NULL;   
	IPin				*pOut				= NULL;
	AM_MEDIA_TYPE mtGroup; 
	
	HRESULT hr;
	hr = CoInitialize(NULL);
	hr = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (void **)&pGraph);
	if (FAILED(hr)){MessageBox(NULL,TEXT("fail pGraph"),TEXT("f"),MB_OK);}

	hr = CoCreateInstance(CLSID_AMTimeline, NULL, CLSCTX_INPROC_SERVER, IID_IAMTimeline, (void**)&pTimeline);
	if (FAILED(hr)){MessageBox(NULL,TEXT("fail timeline"),TEXT("f"),MB_OK);}

	hr = CoCreateInstance(CLSID_CaptureGraphBuilder2, NULL, CLSCTX_INPROC,  IID_ICaptureGraphBuilder2, (void **)&pBuilder);
	if (FAILED(hr)){MessageBox(NULL,TEXT("fail captureGraphBuilder"),TEXT("f"),MB_OK);}

	hr = CoCreateInstance(CLSID_WavDest, NULL, CLSCTX_ALL, IID_IBaseFilter, (void **)&pWaveDest);  
	if (FAILED(hr)){MessageBox(NULL,TEXT("fail wavdest"),TEXT("f"),MB_OK);}

	hr = CoCreateInstance(CLSID_FileWriter, NULL, CLSCTX_ALL, IID_IBaseFilter, (void **)&pWriter);
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail writer"), TEXT("f"), MB_OK);}

	hr = pTimeline->CreateEmptyNode(&pAudioGroupObj, TIMELINE_MAJOR_TYPE_GROUP);// 
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail major type group"), TEXT("f") ,MB_OK);}

	pAudioGroupObj->QueryInterface(IID_IAMTimelineGroup, (void**)&pAudioGroup); 
	ZeroMemory(&mtGroup, sizeof(AM_MEDIA_TYPE));
	mtGroup.majortype = MEDIATYPE_Audio;
	pAudioGroup->SetMediaType(&mtGroup);
	hr = pTimeline->AddGroup(pAudioGroupObj); 
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail addGroup"), TEXT("f"), MB_OK);}
	pTimeline->CreateEmptyNode(&pTrack10bj, TIMELINE_MAJOR_TYPE_TRACK);
	pAudioGroup->QueryInterface(IID_IAMTimelineComp, (void**)&pRootComp);
	pRootComp->VTrackInsBefore(pTrack10bj, -1);
	pTimeline->CreateEmptyNode(&pSource10bj, TIMELINE_MAJOR_TYPE_SOURCE);

	const LONGLONG NANOSECONDS = (1000000000);       // 10 ^ 9
	const LONGLONG UNITS = (NANOSECONDS / 100);      // 10 ^ 7

	REFERENCE_TIME TLStart = 0 * UNITS;
	REFERENCE_TIME TLStop  = 4 * UNITS;
	pSource10bj->SetStartStop(TLStart, TLStop);
	pSource10bj->QueryInterface(IID_IAMTimelineSrc, (void**)&pSource1Src);
	//REFERENCE_TIME MediaStart=g_nNum * UNITS;
	//REFERENCE_TIME MediaStop=(g_nNum+5) * UNITS;// 
	REFERENCE_TIME MediaStart;
	REFERENCE_TIME MediaStop;


	MediaStart	= (Second-2) * UNITS;
	MediaStop	= (Second+2) * UNITS;
	//else
	//{
	//	MediaStart=5 * UNITS;
	//	MediaStop=11 * UNITS;
	//}

	pSource1Src->SetMediaTimes(MediaStart, MediaStop);
	pSource1Src->SetMediaTimes(MediaStart, MediaStop);
	BSTR bstrFile1 = SysAllocString(OLESTR("D:\\pictures\\SampleVideo.AVI"));
	pSource1Src->SetMediaName(bstrFile1);

	pTrack10bj->QueryInterface(IID_IAMTimelineTrack,(void**)&pTrack1);
	pTrack1->SrcAdd(pSource10bj);
	hr = pTimeline->ValidateSourceNames(SFN_VALIDATEF_CHECK | SFN_VALIDATEF_POPUP | SFN_VALIDATEF_REPLACE, NULL, 0 );
	if (FAILED(hr)){MessageBox(NULL,TEXT("fail to add"),TEXT("f"),MB_OK);}

	hr = CoCreateInstance(CLSID_RenderEngine,NULL,CLSCTX_INPROC_SERVER,IID_IRenderEngine,(void**)&pRenderEngine);
	if (FAILED(hr)){MessageBox(NULL,TEXT("fail renderEngine"),TEXT("f"),MB_OK);}
	pRenderEngine->SetTimelineObject(pTimeline);

	hr = pRenderEngine->ConnectFrontEnd();
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to ConnectFrontEnd"), TEXT("f"), MB_OK);}
	hr = pRenderEngine->GetFilterGraph(&pGraph);
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to getFilterGraph"), TEXT("f"), MB_OK);}

	hr = pGraph->QueryInterface( IID_IMediaEvent, (void**) &pEvent );
	if (FAILED(hr)){printf("ERROR - failed to MediaEvent");  }
	hr = pGraph->QueryInterface( IID_IMediaControl, (void**) &pControl ); 
	if (FAILED(hr)){ printf("ERROR - failed to IID_IMediaControl"); }

	pWriter->QueryInterface(IID_IFileSinkFilter, (void**)&pSink); 
	BSTR bstrFile2 = SysAllocString(OLESTR("C:\\1.wav"));
	hr = pSink->SetFileName(bstrFile2,NULL);
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to set filename"), TEXT("f"), MB_OK);}
	pSink->Release();

	hr=pGraph->AddFilter(pWaveDest,L"WavDest");  
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to add WaveDest"), TEXT("f"), MB_OK);}
	hr=pGraph->AddFilter(pWriter,L"FileWriter"); 
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to add FileWriter"), TEXT("f"), MB_OK);}

	IPin *pPin;
	hr = pRenderEngine->GetGroupOutputPin(0, &pPin);
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to add GroupOut"), TEXT("f"), MB_OK);}
	if(pWaveDest)
	{
		hr = pWaveDest->FindPin(L"In",&pin);	
	}
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to add wav"), TEXT("f"), MB_OK);}
	hr = pGraph->Connect(pPin,pin);
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to Add renderEngine->wavdest"), TEXT("f"), MB_OK);}
	if(pWaveDest)
	{
		hr = pWaveDest->FindPin(L"Out", &pOut);
	}
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to Add wavedest_out"),TEXT("f"), MB_OK);}
	hr = pWriter->FindPin(L"in",&pin);
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to Add Write in"),TEXT("f"), MB_OK);}
	hr = pGraph->Connect(pOut,pin);
	if (FAILED(hr)){MessageBox(NULL, TEXT("fail to Add wavdest->writer"),TEXT("f"), MB_OK);}

	pControl->Run();
	long EventCode = 0;
	hr = pEvent->WaitForCompletion( INFINITE, &EventCode );
	pControl->Stop();
	pEvent->Release();
	pControl->Release();
	if(pWaveDest)
	{
		pWaveDest->Release();
	}
	pWriter->Release();
	CoUninitialize(); 
}