HRESULT RecordGraph::BuildGraph(CString recordFileName)
{
HRESULT hr;
ICreateDevEnum *pSysAudioCaptureEnum = NULL;
hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, (void **)&pSysAudioCaptureEnum);
if (FAILED(hr))
{
return hr;
}
IBaseFilter *pAudioCapture = NULL;
IEnumMoniker *pEnumMoniker = NULL;
hr = pSysAudioCaptureEnum->CreateClassEnumerator(CLSID_AudioInputDeviceCategory, &pEnumMoniker, 0);
if (hr == S_OK)
{
IMoniker *pMoniker = NULL;
ULONG fetched;
BOOL findMicrophone = FALSE;
while(pEnumMoniker->Next(1, &pMoniker, &fetched) == S_OK && !findMicrophone)
{
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag, (void **)&pPropBag);
if(SUCCEEDED(hr))
{
VARIANT varName;
VariantInit(&varName);
hr = pPropBag->Read(L"FriendlyName", &varName, 0);
if(SUCCEEDED(hr))
{
ASSERT(varName.vt == VT_BSTR);
CString friendlyName(varName.bstrVal);
if(friendlyName.Find(L"Microphone") >= 0)
{
hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter, (void **)&pAudioCapture);
findMicrophone = TRUE;
}
VariantClear(&varName);
pPropBag->Release();
}
}
}
pEnumMoniker->Release();
}
pSysAudioCaptureEnum->Release();
if(pAudioCapture == NULL)
{
return S_FALSE;
}
pBuilder->AddFilter(pAudioCapture, L"Audio Capture");
IBaseFilter *pWaveDest = NULL;
hr = CoCreateInstance(CLSID_WavDest, NULL, CLSCTX_INPROC_SERVER, IID_IBaseFilter, (void **)&pWaveDest);
if(FAILED(hr))
{
return hr;
}
pBuilder->AddFilter(pWaveDest, L"Wave Dest");
IBaseFilter *pFileWriter = NULL;
hr = CoCreateInstance(CLSID_FileWriter, NULL, CLSCTX_INPROC_SERVER, IID_IBaseFilter, (void **)&pFileWriter);
if(FAILED(hr))
{
return hr;
}
pBuilder->AddFilter(pFileWriter, L"File Writer");
IFileSinkFilter *pFileSetter = NULL;
hr = pFileWriter->QueryInterface(IID_IFileSinkFilter, (void **)&pFileSetter);
if(FAILED(hr))
{
return hr;
}
AM_MEDIA_TYPE pmt;
pmt.majortype = MEDIATYPE_Stream;
pmt.subtype = MEDIASUBTYPE_WAVE;
pmt.formattype = FORMAT_WaveFormatEx;
hr = pFileSetter->SetFileName(recordFileName, &pmt);
hr = ConnectFilters(pBuilder, pAudioCapture, pWaveDest, MEDIATYPE_NULL);if(FAILED(hr)) return hr;
hr = ConnectFilters(pBuilder, pWaveDest, pFileWriter, MEDIATYPE_NULL);//if(FAILED(hr)) return hr;
SaveGraphFile(pBuilder, L"D:\\Record.grf");
pFileSetter->Release();
pFileWriter->Release();
pWaveDest->Release();
pAudioCapture->Release();
}
bool CKTVDlg::buildMixGraph(int filterIndex, int pinIndex)
{
int index = -1;
if (filterIndex != -1)
{
index = findFilter(&m_mixDevice, NULL, filterIndex);
}
else
{
if (GetWinVersion() >= WINVERSION_VISTA)
index = findFilter(&m_mixDevice, L"混音");
else
index = findFilter(&m_mixDevice);
}
if (index == -1)
return false;
if (pinIndex != -1)
{
activePin(m_mixDevice, index, NULL, pinIndex);
}
else
{
if (GetWinVersion() >= WINVERSION_VISTA)
activePin(m_mixDevice, index);
else
activePin(m_mixDevice, index, L"麦克风");
}
SetAudioProperties(m_mixDevice);
HRESULT r = m_mixGraphBuilder->AddFilter(m_mixDevice, L"mix Capture");
if (FAILED(r))
return false;
intrusive_ptr<IPin> sourceOutPin1;
r = GetPinByDirection(m_mixDevice,
reinterpret_cast<IPin**>(&sourceOutPin1),
PINDIR_OUTPUT);
if (FAILED(r))
return false;
// {3C78B8E2-6C4D-11d1-ADE2-0000F8754B99}
static const GUID CLSID_WavDest =
{ 0x3c78b8e2, 0x6c4d, 0x11d1, { 0xad, 0xe2, 0x0, 0x0, 0xf8, 0x75, 0x4b, 0x99 } };
HMODULE m = LoadLibrary(L"wavdest.ax");
if (!m)
return false;
typedef HRESULT (__stdcall* dllGetClassObjectProc)(const IID&, const IID&,
void**);
typedef HRESULT (__stdcall* dllCanUnloadNowProc)();
do
{
dllGetClassObjectProc getObjProc =
reinterpret_cast<dllGetClassObjectProc>(GetProcAddress(
m, "DllGetClassObject"));
dllCanUnloadNowProc canUnloadProc =
reinterpret_cast<dllCanUnloadNowProc>(GetProcAddress(
m, "DllCanUnloadNow"));
if (!getObjProc || !canUnloadProc)
break;
intrusive_ptr<IClassFactory> factory;
r = getObjProc(CLSID_WavDest, IID_IClassFactory,
reinterpret_cast<void**>(&factory));
if (SUCCEEDED(r))
r = factory->CreateInstance(NULL, IID_IBaseFilter, (void**)&m_aviMuxer);
if (FAILED(r))
{
return false;
}
} while (0);
// r = CoCreateInstance(CLSID_WavDest, NULL, CLSCTX_INPROC,
// IID_IBaseFilter, (void **)&m_aviMuxer);
if (FAILED(r))
return false;
r = m_mixGraphBuilder->AddFilter(m_aviMuxer, L"wav MUX");
if (FAILED(r))
return false;
intrusive_ptr<IPin> muxerInPin;
r = GetPinByDirection(m_aviMuxer,
reinterpret_cast<IPin**>(&muxerInPin),
PINDIR_INPUT);
if (FAILED(r))
return false;
r = m_mixGraphBuilder->ConnectDirect(sourceOutPin1.get(), muxerInPin.get(), NULL);
if (FAILED(r))
return false;
intrusive_ptr<IFileSinkFilter2> pFileSink;
r = CoCreateInstance(CLSID_FileWriter, NULL, CLSCTX_INPROC, IID_IFileSinkFilter,
(void**)&pFileSink);
if (FAILED(r))
return false;
// Get the file sink interface from the File Writer
r = pFileSink->QueryInterface(IID_IBaseFilter, (void **)&m_pFileWriter);
if (FAILED(r))
return false;
// Add the FileWriter filter to the graph
r = m_mixGraphBuilder->AddFilter((IBaseFilter *)m_pFileWriter, L"File Writer");
if (FAILED(r))
return false;
intrusive_ptr<IPin> writerInPin;
r = GetPinByDirection(m_pFileWriter,
reinterpret_cast<IPin**>(&writerInPin),
PINDIR_INPUT);
if (FAILED(r))
return false;
IFileSinkFilter* fileSinkFilter;
r = m_pFileWriter->QueryInterface(
IID_IFileSinkFilter, reinterpret_cast<void**>(&fileSinkFilter));
if (FAILED(r))
return false;
r = fileSinkFilter->SetFileName(L"D:\\1111.wav", NULL);
if (FAILED(r))
return false;
intrusive_ptr<IPin> muxerOutPin;
r = GetPinByDirection(m_aviMuxer,
reinterpret_cast<IPin**>(&muxerOutPin),
PINDIR_OUTPUT);
if (FAILED(r))
return false;
r = m_mixGraphBuilder->ConnectDirect(muxerOutPin.get(), writerInPin.get(), NULL);
if (FAILED(r))
return false;
return true;
}
