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Diffstat (limited to 'chromium/third_party/webrtc/system_wrappers/interface/timestamp_extrapolator.h')
-rw-r--r-- | chromium/third_party/webrtc/system_wrappers/interface/timestamp_extrapolator.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/chromium/third_party/webrtc/system_wrappers/interface/timestamp_extrapolator.h b/chromium/third_party/webrtc/system_wrappers/interface/timestamp_extrapolator.h new file mode 100644 index 00000000000..d067198d8d5 --- /dev/null +++ b/chromium/third_party/webrtc/system_wrappers/interface/timestamp_extrapolator.h @@ -0,0 +1,56 @@ +/* + * 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_INTERFACE_TIMESTAMP_EXTRAPOLATOR_H_ +#define SYSTEM_WRAPPERS_INTERFACE_TIMESTAMP_EXTRAPOLATOR_H_ + +#include "webrtc/system_wrappers/interface/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 _P[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 _P11; +}; + +} // namespace webrtc + +#endif // SYSTEM_WRAPPERS_INTERFACE_TIMESTAMP_EXTRAPOLATOR_H_ |