57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/*
|
|
* 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 SYSTEM_WRAPPERS_INCLUDE_TIMESTAMP_EXTRAPOLATOR_H_
|
|
#define SYSTEM_WRAPPERS_INCLUDE_TIMESTAMP_EXTRAPOLATOR_H_
|
|
|
|
#include "webrtc/system_wrappers/include/rw_lock_wrapper.h"
|
|
#include "webrtc/typedefs.h"
|
|
|
|
namespace webrtc
|
|
{
|
|
|
|
class TimestampExtrapolator
|
|
{
|
|
public:
|
|
explicit TimestampExtrapolator(int64_t start_ms);
|
|
~TimestampExtrapolator();
|
|
void Update(int64_t tMs, uint32_t ts90khz);
|
|
int64_t ExtrapolateLocalTime(uint32_t timestamp90khz);
|
|
void Reset(int64_t start_ms);
|
|
|
|
private:
|
|
void CheckForWrapArounds(uint32_t ts90khz);
|
|
bool DelayChangeDetection(double error);
|
|
RWLockWrapper* _rwLock;
|
|
double _w[2];
|
|
double _pP[2][2];
|
|
int64_t _startMs;
|
|
int64_t _prevMs;
|
|
uint32_t _firstTimestamp;
|
|
int32_t _wrapArounds;
|
|
int64_t _prevUnwrappedTimestamp;
|
|
int64_t _prevWrapTimestamp;
|
|
const double _lambda;
|
|
bool _firstAfterReset;
|
|
uint32_t _packetCount;
|
|
const uint32_t _startUpFilterDelayInPackets;
|
|
|
|
double _detectorAccumulatorPos;
|
|
double _detectorAccumulatorNeg;
|
|
const double _alarmThreshold;
|
|
const double _accDrift;
|
|
const double _accMaxError;
|
|
const double _pP11;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // SYSTEM_WRAPPERS_INCLUDE_TIMESTAMP_EXTRAPOLATOR_H_
|