0bb354c540
This change moves ScopedComInitializer out of core_audio_utility and into rtc_base/win so it can be reused elsewhere more easily. It also adds HSTRING and GetActivationFactory functionality to rtc_base/win. These two were heavily based on what is already present base/win. All of these are necessary for the new window capturer based on the Windows.Graphics.Capture API. You can see how these APIs will be used in this CL: 186603: Implement WgcCaptureSession | https://webrtc-review.googlesource.com/c/src/+/186603 Bug: webrtc:9273 Change-Id: I0a36373aac98be779ccbabe1053bb8d6e234f6a3 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/188523 Commit-Queue: Tommi <tommi@webrtc.org> Reviewed-by: Tommi <tommi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32522}
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
/*
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* Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_WIN_GET_ACTIVATION_FACTORY_H_
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#define RTC_BASE_WIN_GET_ACTIVATION_FACTORY_H_
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#include <winerror.h>
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#include "rtc_base/win/hstring.h"
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namespace webrtc {
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// Provides access to Core WinRT functions which may not be available on
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// Windows 7. Loads functions dynamically at runtime to prevent library
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// dependencies.
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// Callers must check the return value of ResolveCoreWinRTDelayLoad() before
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// using these functions.
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bool ResolveCoreWinRTDelayload();
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HRESULT RoGetActivationFactoryProxy(HSTRING class_id,
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const IID& iid,
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void** out_factory);
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// Retrieves an activation factory for the type specified.
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template <typename InterfaceType, wchar_t const* runtime_class_id>
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HRESULT GetActivationFactory(InterfaceType** factory) {
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HSTRING class_id_hstring;
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HRESULT hr = CreateHstring(runtime_class_id, wcslen(runtime_class_id),
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&class_id_hstring);
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if (FAILED(hr))
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return hr;
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hr = RoGetActivationFactoryProxy(class_id_hstring, IID_PPV_ARGS(factory));
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if (FAILED(hr))
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return hr;
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return DeleteHstring(class_id_hstring);
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}
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} // namespace webrtc
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#endif // RTC_BASE_WIN_GET_ACTIVATION_FACTORY_H_
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