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/*
* Copyright (c) 2011 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_VIDEO_CODING_TIMING_INTER_FRAME_DELAY_H_
#define MODULES_VIDEO_CODING_TIMING_INTER_FRAME_DELAY_H_
#include <stdint.h>
#include "absl/types/optional.h"
#include "api/units/time_delta.h"
#include "api/units/timestamp.h"
#include "modules/include/module_common_types_public.h"
namespace webrtc {
class InterFrameDelay {
public:
InterFrameDelay();
// Resets the estimate. Zeros are given as parameters.
void Reset();
// Calculates the delay of a frame with the given timestamp.
// This method is called when the frame is complete.
absl::optional<TimeDelta> CalculateDelay(uint32_t rtp_timestamp,
Timestamp now);
private:
// The previous rtp timestamp passed to the delay estimate
int64_t prev_rtp_timestamp_unwrapped_;
TimestampUnwrapper unwrapper_;
// The previous wall clock timestamp used by the delay estimate
absl::optional<Timestamp> prev_wall_clock_;
};
} // namespace webrtc
#endif // MODULES_VIDEO_CODING_TIMING_INTER_FRAME_DELAY_H_
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