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Diffstat (limited to 'third_party/libwebrtc/modules/desktop_capture/win/scoped_thread_desktop.h')
-rw-r--r-- | third_party/libwebrtc/modules/desktop_capture/win/scoped_thread_desktop.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/desktop_capture/win/scoped_thread_desktop.h b/third_party/libwebrtc/modules/desktop_capture/win/scoped_thread_desktop.h new file mode 100644 index 0000000000..98f151a46c --- /dev/null +++ b/third_party/libwebrtc/modules/desktop_capture/win/scoped_thread_desktop.h @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2013 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. + */ + +#ifndef MODULES_DESKTOP_CAPTURE_WIN_SCOPED_THREAD_DESKTOP_H_ +#define MODULES_DESKTOP_CAPTURE_WIN_SCOPED_THREAD_DESKTOP_H_ + +#include <windows.h> + +#include <memory> + +#include "rtc_base/system/rtc_export.h" + +namespace webrtc { + +class Desktop; + +class RTC_EXPORT ScopedThreadDesktop { + public: + ScopedThreadDesktop(); + ~ScopedThreadDesktop(); + + ScopedThreadDesktop(const ScopedThreadDesktop&) = delete; + ScopedThreadDesktop& operator=(const ScopedThreadDesktop&) = delete; + + // Returns true if `desktop` has the same desktop name as the currently + // assigned desktop (if assigned) or as the initial desktop (if not assigned). + // Returns false in any other case including failing Win32 APIs and + // uninitialized desktop handles. + bool IsSame(const Desktop& desktop); + + // Reverts the calling thread to use the initial desktop. + void Revert(); + + // Assigns `desktop` to be the calling thread. Returns true if the thread has + // been switched to `desktop` successfully. Takes ownership of `desktop`. + bool SetThreadDesktop(Desktop* desktop); + + private: + // The desktop handle assigned to the calling thread by Set + std::unique_ptr<Desktop> assigned_; + + // The desktop handle assigned to the calling thread at creation. + std::unique_ptr<Desktop> initial_; +}; + +} // namespace webrtc + +#endif // MODULES_DESKTOP_CAPTURE_WIN_SCOPED_THREAD_DESKTOP_H_ |