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84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/win/core_winrt_util.h"
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namespace {
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void* LoadComBaseFunction(const char* function_name) {
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static HMODULE const handle = ::LoadLibrary(L"combase.dll");
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return handle ? ::GetProcAddress(handle, function_name) : nullptr;
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}
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decltype(&::RoInitialize) GetRoInitializeFunction() {
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static decltype(&::RoInitialize) const function =
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reinterpret_cast<decltype(&::RoInitialize)>(
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LoadComBaseFunction("RoInitialize"));
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return function;
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}
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decltype(&::RoUninitialize) GetRoUninitializeFunction() {
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static decltype(&::RoUninitialize) const function =
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reinterpret_cast<decltype(&::RoUninitialize)>(
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LoadComBaseFunction("RoUninitialize"));
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return function;
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}
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decltype(&::RoActivateInstance) GetRoActivateInstanceFunction() {
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static decltype(&::RoActivateInstance) const function =
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reinterpret_cast<decltype(&::RoActivateInstance)>(
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LoadComBaseFunction("RoActivateInstance"));
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return function;
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}
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decltype(&::RoGetActivationFactory) GetRoGetActivationFactoryFunction() {
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static decltype(&::RoGetActivationFactory) const function =
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reinterpret_cast<decltype(&::RoGetActivationFactory)>(
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LoadComBaseFunction("RoGetActivationFactory"));
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return function;
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}
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} // namespace
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namespace base {
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namespace win {
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bool ResolveCoreWinRTDelayload() {
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// TODO(finnur): Add AssertIOAllowed once crbug.com/770193 is fixed.
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return GetRoInitializeFunction() && GetRoUninitializeFunction() &&
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GetRoActivateInstanceFunction() && GetRoGetActivationFactoryFunction();
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}
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HRESULT RoInitialize(RO_INIT_TYPE init_type) {
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auto ro_initialize_func = GetRoInitializeFunction();
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if (!ro_initialize_func)
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return E_FAIL;
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return ro_initialize_func(init_type);
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}
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void RoUninitialize() {
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auto ro_uninitialize_func = GetRoUninitializeFunction();
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if (ro_uninitialize_func)
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ro_uninitialize_func();
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}
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HRESULT RoGetActivationFactory(HSTRING class_id,
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const IID& iid,
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void** out_factory) {
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auto get_factory_func = GetRoGetActivationFactoryFunction();
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if (!get_factory_func)
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return E_FAIL;
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return get_factory_func(class_id, iid, out_factory);
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}
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HRESULT RoActivateInstance(HSTRING class_id, IInspectable** instance) {
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auto activate_instance_func = GetRoActivateInstanceFunction();
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if (!activate_instance_func)
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return E_FAIL;
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return activate_instance_func(class_id, instance);
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}
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} // namespace win
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} // namespace base
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