47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
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/*
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* Copyright (c) 2018 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 MODULES_VIDEO_CODING_UTILITY_FRAMERATE_CONTROLLER_H_
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#define MODULES_VIDEO_CODING_UTILITY_FRAMERATE_CONTROLLER_H_
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#include <stdint.h>
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#include "absl/types/optional.h"
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#include "rtc_base/rate_statistics.h"
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namespace webrtc {
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class FramerateController {
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public:
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explicit FramerateController(float target_framerate_fps);
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void SetTargetRate(float target_framerate_fps);
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float GetTargetRate();
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// Advices user to drop next frame in order to reach target framerate.
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bool DropFrame(uint32_t timestamp_ms) const;
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void AddFrame(uint32_t timestamp_ms);
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void Reset();
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private:
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absl::optional<float> Rate(uint32_t timestamp_ms) const;
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absl::optional<float> target_framerate_fps_;
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absl::optional<uint32_t> last_timestamp_ms_;
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uint32_t min_frame_interval_ms_;
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RateStatistics framerate_estimator_;
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};
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_UTILITY_FRAMERATE_CONTROLLER_H_
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