1 /*
2  *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef MODULES_DESKTOP_CAPTURE_RESOLUTION_TRACKER_H_
12 #define MODULES_DESKTOP_CAPTURE_RESOLUTION_TRACKER_H_
13 
14 #include "modules/desktop_capture/desktop_geometry.h"
15 
16 namespace webrtc {
17 
18 class ResolutionTracker final {
19  public:
20   // Sets the resolution to |size|. Returns true if a previous size was recorded
21   // and differs from |size|.
22   bool SetResolution(DesktopSize size);
23 
24   // Resets to the initial state.
25   void Reset();
26 
27  private:
28   DesktopSize last_size_;
29   bool initialized_ = false;
30 };
31 
32 }  // namespace webrtc
33 
34 #endif  // MODULES_DESKTOP_CAPTURE_RESOLUTION_TRACKER_H_
35