c3771cc4d3
I used a command like this to update the paths: perl -pi -e "s/webrtc\/base/webrtc\/rtc_base/g" `find webrtc/rtc_base -name "*.cc" -o -name "*.h"` BUG=webrtc:7634 NOPRESUBMIT=True # cpplint errors that aren't caused by this CL. Review-Url: https://codereview.webrtc.org/2969623003 Cr-Commit-Position: refs/heads/master@{#18870}
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/*
|
|
* Copyright (c) 2016 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.
|
|
*/
|
|
|
|
#include "webrtc/test/drifting_clock.h"
|
|
#include "webrtc/rtc_base/checks.h"
|
|
|
|
namespace webrtc {
|
|
namespace test {
|
|
const float DriftingClock::kDoubleSpeed = 2.0f;
|
|
const float DriftingClock::kNoDrift = 1.0f;
|
|
const float DriftingClock::kHalfSpeed = 0.5f;
|
|
|
|
DriftingClock::DriftingClock(Clock* clock, float speed)
|
|
: clock_(clock),
|
|
drift_(speed - 1.0f),
|
|
start_time_(clock_->TimeInMicroseconds()) {
|
|
RTC_CHECK(clock);
|
|
RTC_CHECK_GT(speed, 0.0f);
|
|
}
|
|
|
|
float DriftingClock::Drift() const {
|
|
int64_t now = clock_->TimeInMicroseconds();
|
|
RTC_DCHECK_GE(now, start_time_);
|
|
return (now - start_time_) * drift_;
|
|
}
|
|
|
|
int64_t DriftingClock::TimeInMilliseconds() const {
|
|
return clock_->TimeInMilliseconds() + Drift() / 1000.;
|
|
}
|
|
|
|
int64_t DriftingClock::TimeInMicroseconds() const {
|
|
return clock_->TimeInMicroseconds() + Drift();
|
|
}
|
|
|
|
NtpTime DriftingClock::CurrentNtpTime() const {
|
|
// NTP precision is 1/2^32 seconds, i.e. 2^32 ntp fractions = 1 second.
|
|
const double kNtpFracPerMicroSecond = 4294.967296; // = 2^32 / 10^6
|
|
|
|
NtpTime ntp = clock_->CurrentNtpTime();
|
|
uint64_t total_fractions = static_cast<uint64_t>(ntp);
|
|
total_fractions += Drift() * kNtpFracPerMicroSecond;
|
|
return NtpTime(total_fractions);
|
|
}
|
|
|
|
int64_t DriftingClock::CurrentNtpInMilliseconds() const {
|
|
return clock_->CurrentNtpInMilliseconds() + Drift() / 1000.;
|
|
}
|
|
} // namespace test
|
|
} // namespace webrtc
|