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/*
* Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "rtc_base/win/get_activation_factory.h"
#include <libloaderapi.h>
#include <roapi.h>
namespace {
FARPROC LoadComBaseFunction(const char* function_name) {
static HMODULE const handle =
::LoadLibraryExW(L"combase.dll", nullptr, LOAD_LIBRARY_SEARCH_SYSTEM32);
return handle ? ::GetProcAddress(handle, function_name) : nullptr;
}
decltype(&::RoGetActivationFactory) GetRoGetActivationFactoryFunction() {
static decltype(&::RoGetActivationFactory) const function =
reinterpret_cast<decltype(&::RoGetActivationFactory)>(
LoadComBaseFunction("RoGetActivationFactory"));
return function;
}
} // namespace
namespace webrtc {
bool ResolveCoreWinRTDelayload() {
return GetRoGetActivationFactoryFunction() &&
ResolveCoreWinRTStringDelayload();
}
HRESULT RoGetActivationFactoryProxy(HSTRING class_id,
const IID& iid,
void** out_factory) {
auto get_factory_func = GetRoGetActivationFactoryFunction();
if (!get_factory_func)
return E_FAIL;
return get_factory_func(class_id, iid, out_factory);
}
} // namespace webrtc
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