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The `TimestampExtrapolator` is only used by the `VCMTiming` class, despite there being references to it from both `modules/rtp_rtcp/BUILD.gn` and `modules/video_coding/BUILD.gn`. Bug: webrtc:14111 Change-Id: If1a02a56a0c83b13d619ca08dc76c884fa829369 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/275482 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Johannes Kron <kron@webrtc.org> Commit-Queue: Rasmus Brandt <brandtr@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38093}
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
/*
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* Copyright (c) 2011 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_TIMING_TIMESTAMP_EXTRAPOLATOR_H_
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#define MODULES_VIDEO_CODING_TIMING_TIMESTAMP_EXTRAPOLATOR_H_
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#include <stdint.h>
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#include "absl/types/optional.h"
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#include "api/units/timestamp.h"
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#include "modules/include/module_common_types_public.h"
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namespace webrtc {
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// Not thread safe.
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class TimestampExtrapolator {
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public:
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explicit TimestampExtrapolator(Timestamp start);
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void Update(Timestamp now, uint32_t ts90khz);
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absl::optional<Timestamp> ExtrapolateLocalTime(uint32_t timestamp90khz) const;
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void Reset(Timestamp start);
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private:
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void CheckForWrapArounds(uint32_t ts90khz);
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bool DelayChangeDetection(double error);
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double w_[2];
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double p_[2][2];
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Timestamp start_;
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Timestamp prev_;
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absl::optional<int64_t> first_unwrapped_timestamp_;
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TimestampUnwrapper unwrapper_;
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absl::optional<int64_t> prev_unwrapped_timestamp_;
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uint32_t packet_count_;
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double detector_accumulator_pos_;
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double detector_accumulator_neg_;
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};
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_TIMING_TIMESTAMP_EXTRAPOLATOR_H_
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