static ICompilerPtr NewCompiler()
{
ICompilerPtr piCompiler;
HRESULT hr = piCompiler.CreateInstance(__uuidof(DolphinCompiler));
if (SUCCEEDED(hr))
return piCompiler;
if (hr == REGDB_E_CLASSNOTREG)
{
// Try and register it
HINSTANCE hLib = LoadCompiler();
if (hLib)
{
// It loaded, now try invoking the class factory entry point
GETCLASSOBJPROC pfnFactory = (GETCLASSOBJPROC)::GetProcAddress(HMODULE(hLib), "DllGetClassObject");
if (pfnFactory)
{
// Found the entry point, try retrieving the factory
IClassFactoryPtr piFactory;
hr = (*pfnFactory)(__uuidof(DolphinCompiler), IID_IClassFactory, (void**)&piFactory);
if (SUCCEEDED(hr))
{
// Now try creating the VM object directly
hr = piFactory->CreateInstance(NULL, __uuidof(ICompiler), (void**)&piCompiler);
}
}
}
}
return piCompiler;
}
HRESULT CreateFilterFromLibrary(int index, REFCLSID clsid, REFIID iid, void** ppUnk)
{
if (index < 0 || index >= importlibnum)
return E_FAIL;
if (!fn[index])
return E_FAIL;
// create a class factory
IUnknownPtr pUnk;
HRESULT hr = fn[index](clsid, IID_IUnknown, (void**)&pUnk);
if (SUCCEEDED(hr))
{
IClassFactoryPtr pCF = pUnk;
if (pCF == NULL)
{
hr = E_NOINTERFACE;
}
else
{
// ask the class factory to create the object
hr = pCF->CreateInstance(NULL, iid, (void**)ppUnk);
}
}
return hr;
}
/**
* Fallback thumbnail handler function. (internal)
* @param hkey_Assoc File association key to check.
* @param cx
* @param phbmp
* @param pdwAlpha
* @return HRESULT.
*/
HRESULT RP_ThumbnailProvider_Private::Fallback_int(RegKey &hkey_Assoc,
UINT cx, HBITMAP *phbmp, WTS_ALPHATYPE *pdwAlpha)
{
// Is RP_Fallback present?
RegKey hkey_RP_Fallback(hkey_Assoc, L"RP_Fallback", KEY_READ, false);
if (!hkey_RP_Fallback.isOpen()) {
return hkey_RP_Fallback.lOpenRes();
}
// Get the IThumbnailProvider key.
wstring clsid_reg = hkey_RP_Fallback.read(L"IThumbnailProvider");
if (clsid_reg.empty()) {
// No CLSID.
return E_FAIL;
}
// Convert the CLSID from the string.
CLSID clsidThumbnailProvider;
HRESULT hr = CLSIDFromString(clsid_reg.c_str(), &clsidThumbnailProvider);
if (FAILED(hr)) {
// Failed to convert the CLSID from string.
return hr;
}
// Get the class object.
IClassFactoryPtr pCF;
hr = CoGetClassObject(clsidThumbnailProvider, CLSCTX_INPROC_SERVER, nullptr, IID_PPV_ARGS(&pCF));
if (FAILED(hr) || !pCF) {
// Failed to get the IClassFactory.
return hr;
}
// Try getting the IInitializeWithStream interface.
// FIXME: WMP11 only has IInitializeWithItem.
IInitializeWithStreamPtr pInitializeWithStream;
hr = pCF->CreateInstance(nullptr, IID_PPV_ARGS(&pInitializeWithStream));
if (FAILED(hr) || !pInitializeWithStream) {
// Failed to get the IInitializeWithStream.
return hr;
}
// Rewind the file.
this->file->rewind();
// Initialize the stream.
hr = pInitializeWithStream->Initialize(this->pstream, this->grfMode);
if (FAILED(hr)) {
// Initialize() failed.
return hr;
}
// Try getting the IThumbnailProvider interface.
IThumbnailProviderPtr pThumbnailProvider;
hr = pInitializeWithStream->QueryInterface(IID_PPV_ARGS(&pThumbnailProvider));
if (FAILED(hr) || !pThumbnailProvider) {
// Failed to get the IThumbnailProvider.
return hr;
}
// Get the thumbnail.
return pThumbnailProvider->GetThumbnail(cx, phbmp, pdwAlpha);
}
