46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
/*
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* Copyright 2021 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 COMMON_VIDEO_FRAMERATE_CONTROLLER_H_
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#define COMMON_VIDEO_FRAMERATE_CONTROLLER_H_
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#include <stdint.h>
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#include <optional>
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namespace webrtc {
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// Determines which frames that should be dropped based on input framerate and
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// requested framerate.
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class FramerateController {
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public:
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FramerateController();
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explicit FramerateController(double max_framerate);
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~FramerateController();
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// Sets max framerate (default is maxdouble).
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void SetMaxFramerate(double max_framerate);
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double GetMaxFramerate() const;
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// Returns true if the frame should be dropped, false otherwise.
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bool ShouldDropFrame(int64_t in_timestamp_ns);
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void Reset();
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void KeepFrame(int64_t in_timestamp_ns);
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private:
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double max_framerate_;
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std::optional<int64_t> next_frame_timestamp_ns_;
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};
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} // namespace webrtc
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#endif // COMMON_VIDEO_FRAMERATE_CONTROLLER_H_
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