1 files changed, 34 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/desktop_capture/resolution_tracker.h b/third_party/libwebrtc/modules/desktop_capture/resolution_tracker.h
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index 0000000000..8fe9d61862
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+++ b/third_party/libwebrtc/modules/desktop_capture/resolution_tracker.h
@@ -0,0 +1,34 @@
+/*
+ *  Copyright (c) 2017 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_RESOLUTION_TRACKER_H_
+#define MODULES_DESKTOP_CAPTURE_RESOLUTION_TRACKER_H_
+
+#include "modules/desktop_capture/desktop_geometry.h"
+
+namespace webrtc {
+
+class ResolutionTracker final {
+ public:
+  // Sets the resolution to `size`. Returns true if a previous size was recorded
+  // and differs from `size`.
+  bool SetResolution(DesktopSize size);
+
+  // Resets to the initial state.
+  void Reset();
+
+ private:
+  DesktopSize last_size_;
+  bool initialized_ = false;
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_DESKTOP_CAPTURE_RESOLUTION_TRACKER_H_