853a407273
This reverts commit a154a15c978a0eae133d957dcad3581fd5f98c7b. Reason for revert: breaks downstream tests Original change's description: > Migrate RemoteNtpTimeEstimator to more precise time representations > > Bug: webrtc:13757 > Change-Id: I880ab3cc6e4f72da587ae42ddca051332907c07f > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/261311 > Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> > Reviewed-by: Jakob Ivarsson <jakobi@webrtc.org> > Reviewed-by: Erik Språng <sprang@webrtc.org> > Reviewed-by: Emil Lundmark <lndmrk@webrtc.org> > Cr-Commit-Position: refs/heads/main@{#36817} Bug: webrtc:13757 Change-Id: Id21edb1378e6e944b24955396250ddc33fa70663 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/261722 Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org> Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36819}
45 lines
1.7 KiB
C++
45 lines
1.7 KiB
C++
/*
|
|
* Copyright (c) 2015 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_RTP_RTCP_SOURCE_TIME_UTIL_H_
|
|
#define MODULES_RTP_RTCP_SOURCE_TIME_UTIL_H_
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "api/units/time_delta.h"
|
|
#include "system_wrappers/include/ntp_time.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// Helper function for compact ntp representation:
|
|
// RFC 3550, Section 4. Time Format.
|
|
// Wallclock time is represented using the timestamp format of
|
|
// the Network Time Protocol (NTP).
|
|
// ...
|
|
// In some fields where a more compact representation is
|
|
// appropriate, only the middle 32 bits are used; that is, the low 16
|
|
// bits of the integer part and the high 16 bits of the fractional part.
|
|
inline uint32_t CompactNtp(NtpTime ntp) {
|
|
return (ntp.seconds() << 16) | (ntp.fractions() >> 16);
|
|
}
|
|
|
|
// Converts interval to compact ntp (1/2^16 seconds) resolution.
|
|
// Negative values converted to 0, Overlarge values converted to max uint32_t.
|
|
uint32_t SaturatedToCompactNtp(TimeDelta delta);
|
|
|
|
// Converts interval from compact ntp (1/2^16 seconds) resolution to TimeDelta.
|
|
// This interval can be up to ~9.1 hours (2^15 seconds).
|
|
// Values close to 2^16 seconds are considered negative and are converted to
|
|
// minimum value of 1ms.
|
|
TimeDelta CompactNtpRttToTimeDelta(uint32_t compact_ntp_interval);
|
|
|
|
} // namespace webrtc
|
|
#endif // MODULES_RTP_RTCP_SOURCE_TIME_UTIL_H_
|