static void setWindowText(HWND dialog, UINT field, IPropertyBagPtr statistics, const _bstr_t& key)
{
VARIANT var;
::VariantInit(&var);
V_VT(&var) = VT_UI8;
if (FAILED(statistics->Read(key, &var, 0))) {
::VariantClear(&var);
return;
}
unsigned long long value = V_UI8(&var);
String valueStr = WTF::String::number(value);
setWindowText(dialog, field, _bstr_t(valueStr.utf8().data()));
::VariantClear(&var);
}
void WebCam::EnumerateVideoDevicesForComboBox(HWND hwndComboBox)
{
HRESULT hr;
// Create the system device enumerator.
ICreateDevEnumPtr pDevEnum;
hr = pDevEnum.CreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC);
if (S_OK != hr)
{
return;
}
// Create an enumerator for video capture devices.
IEnumMonikerPtr pClassEnum;
pDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pClassEnum, 0);
if (FAILED(hr) || (pClassEnum == NULL))
{
return;
}
ULONG cFetched;
IMonikerPtr pMoniker;
videoDevices.clear();
while (pClassEnum->Next(1, &pMoniker, &cFetched) == S_OK)
{
VideoDevice device;
// Get the property bag of the moniker
{
IPropertyBagPtr propBag;
hr = pMoniker->BindToStorage(NULL, NULL, IID_IPropertyBag,
reinterpret_cast<void**>(&propBag));
if (FAILED(hr))
{
pMoniker.Release();
continue;
}
_variant_t v;
hr = propBag->Read(L"Description", &v, 0);
if (FAILED(hr))
{
hr = propBag->Read(L"FriendlyName", &v, 0);
}
if (S_OK == hr)
{
device.friendlyName = v.bstrVal;
}
hr = propBag->Read(L"DevicePath", &v, 0);
if (S_OK == hr)
{
device.devicePath = v.bstrVal;
}
videoDevices.push_back(device);
LRESULT index = SendMessage(
hwndComboBox,
CB_ADDSTRING,
(WPARAM)0,
(LPARAM)device.friendlyName.c_str());
if (index < 0)
{
pMoniker.Release();
continue;
}
SendMessage(
hwndComboBox,
CB_SETITEMDATA,
(WPARAM)index,
(LPARAM)(DWORD)videoDevices.size() - 1);
if ((index == 0) || ((uDeviceType == deviceType_camera) && (device.devicePath == this->sDevicePath)))
{
SendMessage(
hwndComboBox,
CB_SETCURSEL,
(WPARAM)index,
(LPARAM)0);
}
}
pMoniker.Release();
}
}
