static void load_stream(IUnknown *reader, const char *data, int data_size)
{
HRESULT hr;
IWICPersistStream *persist;
IStream *stream;
stream = create_stream(data, data_size);
if (!stream)
return;
hr = IUnknown_QueryInterface(reader, &IID_IWICPersistStream, (void**)&persist);
ok(hr == S_OK, "QueryInterface failed, hr=%x\n", hr);
if (SUCCEEDED(hr))
{
hr = IWICPersistStream_LoadEx(persist, stream, NULL, WICPersistOptionsDefault);
ok(hr == S_OK, "LoadEx failed, hr=%x\n", hr);
IWICPersistStream_Release(persist);
}
IStream_Release(stream);
}
static HRESULT WINAPI ComponentFactory_CreateMetadataReaderFromContainer(IWICComponentFactory *iface,
REFGUID format, const GUID *vendor, DWORD options, IStream *stream, IWICMetadataReader **reader)
{
HRESULT hr;
IEnumUnknown *enumreaders;
IUnknown *unkreaderinfo;
IWICMetadataReaderInfo *readerinfo;
IWICPersistStream *wicpersiststream;
ULONG num_fetched;
GUID decoder_vendor;
BOOL matches;
LARGE_INTEGER zero;
TRACE("%p,%s,%s,%x,%p,%p\n", iface, debugstr_guid(format), debugstr_guid(vendor),
options, stream, reader);
if (!format || !stream || !reader)
return E_INVALIDARG;
zero.QuadPart = 0;
hr = CreateComponentEnumerator(WICMetadataReader, WICComponentEnumerateDefault, &enumreaders);
if (FAILED(hr)) return hr;
*reader = NULL;
start:
while (!*reader)
{
hr = IEnumUnknown_Next(enumreaders, 1, &unkreaderinfo, &num_fetched);
if (hr == S_OK)
{
hr = IUnknown_QueryInterface(unkreaderinfo, &IID_IWICMetadataReaderInfo, (void**)&readerinfo);
if (SUCCEEDED(hr))
{
if (vendor)
{
hr = IWICMetadataReaderInfo_GetVendorGUID(readerinfo, &decoder_vendor);
if (FAILED(hr) || !IsEqualIID(vendor, &decoder_vendor))
{
IWICMetadataReaderInfo_Release(readerinfo);
IUnknown_Release(unkreaderinfo);
continue;
}
}
hr = IWICMetadataReaderInfo_MatchesPattern(readerinfo, format, stream, &matches);
if (SUCCEEDED(hr) && matches)
{
hr = IStream_Seek(stream, zero, STREAM_SEEK_SET, NULL);
if (SUCCEEDED(hr))
hr = IWICMetadataReaderInfo_CreateInstance(readerinfo, reader);
if (SUCCEEDED(hr))
{
hr = IWICMetadataReader_QueryInterface(*reader, &IID_IWICPersistStream, (void**)&wicpersiststream);
if (SUCCEEDED(hr))
{
hr = IWICPersistStream_LoadEx(wicpersiststream,
stream, vendor, options & WICPersistOptionMask);
IWICPersistStream_Release(wicpersiststream);
}
if (FAILED(hr))
{
IWICMetadataReader_Release(*reader);
*reader = NULL;
}
}
}
IUnknown_Release(readerinfo);
}
IUnknown_Release(unkreaderinfo);
}
else
break;
}
if (!*reader && vendor)
{
vendor = NULL;
IEnumUnknown_Reset(enumreaders);
goto start;
}
IEnumUnknown_Release(enumreaders);
if (!*reader && !(options & WICMetadataCreationFailUnknown))
{
hr = IStream_Seek(stream, zero, STREAM_SEEK_SET, NULL);
if (SUCCEEDED(hr))
hr = UnknownMetadataReader_CreateInstance(&IID_IWICMetadataReader, (void**)reader);
if (SUCCEEDED(hr))
{
hr = IWICMetadataReader_QueryInterface(*reader, &IID_IWICPersistStream, (void**)&wicpersiststream);
if (SUCCEEDED(hr))
{
hr = IWICPersistStream_LoadEx(wicpersiststream, stream, NULL, options & WICPersistOptionMask);
IWICPersistStream_Release(wicpersiststream);
}
if (FAILED(hr))
{
IWICMetadataReader_Release(*reader);
*reader = NULL;
}
}
}
if (*reader)
return S_OK;
else
return WINCODEC_ERR_COMPONENTNOTFOUND;
}
