void DirectShowAudioEndpointControl::updateEndpoints()
{
IMalloc *oleMalloc = 0;
if (m_deviceEnumerator && CoGetMalloc(1, &oleMalloc) == S_OK) {
IEnumMoniker *monikers = 0;
if (m_deviceEnumerator->CreateClassEnumerator(
CLSID_AudioRendererCategory, &monikers, 0) == S_OK) {
for (IMoniker *moniker = 0; monikers->Next(1, &moniker, 0) == S_OK; moniker->Release()) {
OLECHAR *string = 0;
if (moniker->GetDisplayName(m_bindContext, 0, &string) == S_OK) {
QString deviceId = QString::fromWCharArray(string);
oleMalloc->Free(string);
moniker->AddRef();
m_devices.insert(deviceId, moniker);
if (m_defaultEndpoint.isEmpty()
|| deviceId.endsWith(QLatin1String("Default DirectSound Device"))) {
m_defaultEndpoint = deviceId;
}
}
}
monikers->Release();
}
oleMalloc->Release();
}
}
int CCaptureVideo::EnumDevices(CArray<CString, CString>& arList)
{
int nCount = 0;
//枚举视频扑捉设备
ICreateDevEnum *pCreateDevEnum;
HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER,IID_ICreateDevEnum, (void**)&pCreateDevEnum);
if (hr != NOERROR)return -1;
CComPtr<IEnumMoniker> pEm;
hr = pCreateDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory,&pEm, 0);
if (hr != NOERROR)return -1;
pEm->Reset();
ULONG cFetched;
IMoniker *pM;
while(hr = pEm->Next(1, &pM, &cFetched), hr==S_OK)
{
IPropertyBag *pBag;
hr = pM->BindToStorage(0, 0, IID_IPropertyBag, (void **)&pBag);
if(SUCCEEDED(hr))
{
VARIANT var;
var.vt = VT_BSTR;
hr = pBag->Read(L"FriendlyName", &var, NULL);
if (hr == NOERROR)
{
char szStr[2048];
nCount++;
WideCharToMultiByte(CP_ACP,0,var.bstrVal, -1, szStr, 2048, NULL, NULL);
arList.Add( CString(szStr) );
SysFreeString(var.bstrVal);
pM->AddRef();
}
pBag->Release();
}
pM->Release();
}
return nCount;
}
HRESULT GetCaptureFilter(REFCLSID CLSID_DeviceCategory, LPCTSTR lpFriendlyName, void** ppCapture)
{
ICreateDevEnum *pCreateDevEnum = 0;
HRESULT hr = CoCreateInstance(CLSID_SystemDeviceEnum
, NULL
, CLSCTX_INPROC_SERVER
, IID_ICreateDevEnum
, (void**)&pCreateDevEnum);
if (FAILED(hr)) return hr;
IEnumMoniker* pEnumMoniker = 0;
hr = pCreateDevEnum->CreateClassEnumerator(CLSID_DeviceCategory, &pEnumMoniker, 0);
if (FAILED(hr))
{
pCreateDevEnum->Release();
return hr;
}
pEnumMoniker->Reset();
BOOL bFound = FALSE;
IMoniker* pMoniker = NULL;
while ((pEnumMoniker->Next(1, &pMoniker, NULL) == S_OK )&& (!bFound))
{
IPropertyBag *pBag = NULL;
hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag, (void **)&pBag);
if (SUCCEEDED(hr))
{
VARIANT var = { 0 };
var.vt = VT_BSTR;
hr = pBag->Read(_T("FriendlyName"), &var, NULL);
if (SUCCEEDED(hr))
{
if (!_tcscmp(var.bstrVal, lpFriendlyName))
{
hr = pMoniker->BindToObject(0, 0, IID_IBaseFilter, (void**)ppCapture);
pMoniker->AddRef();
bFound = TRUE;
}
pBag->Release();
}
}
pMoniker->Release();
}//end while
pEnumMoniker->Release();
pCreateDevEnum->Release();
if (*ppCapture == NULL) return E_FAIL;
if (FAILED(hr)) return hr;
return bFound ? S_OK : S_FALSE;
}
