mirror of
https://github.com/oxen-io/session-android.git
synced 2024-12-19 06:27:30 +00:00
86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
/*
|
|
* Copyright (c) 2013 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 WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CLOCK_H_
|
|
#define WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CLOCK_H_
|
|
|
|
#include "webrtc/system_wrappers/interface/rw_lock_wrapper.h"
|
|
#include "webrtc/system_wrappers/interface/scoped_ptr.h"
|
|
#include "webrtc/typedefs.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// January 1970, in NTP seconds.
|
|
const uint32_t kNtpJan1970 = 2208988800UL;
|
|
|
|
// Magic NTP fractional unit.
|
|
const double kMagicNtpFractionalUnit = 4.294967296E+9;
|
|
|
|
// A clock interface that allows reading of absolute and relative timestamps.
|
|
class Clock {
|
|
public:
|
|
virtual ~Clock() {}
|
|
|
|
// Return a timestamp in milliseconds relative to some arbitrary source; the
|
|
// source is fixed for this clock.
|
|
virtual int64_t TimeInMilliseconds() const = 0;
|
|
|
|
// Return a timestamp in microseconds relative to some arbitrary source; the
|
|
// source is fixed for this clock.
|
|
virtual int64_t TimeInMicroseconds() const = 0;
|
|
|
|
// Retrieve an NTP absolute timestamp in seconds and fractions of a second.
|
|
virtual void CurrentNtp(uint32_t& seconds, uint32_t& fractions) const = 0;
|
|
|
|
// Retrieve an NTP absolute timestamp in milliseconds.
|
|
virtual int64_t CurrentNtpInMilliseconds() const = 0;
|
|
|
|
// Converts an NTP timestamp to a millisecond timestamp.
|
|
static int64_t NtpToMs(uint32_t seconds, uint32_t fractions);
|
|
|
|
// Returns an instance of the real-time system clock implementation.
|
|
static Clock* GetRealTimeClock();
|
|
};
|
|
|
|
class SimulatedClock : public Clock {
|
|
public:
|
|
explicit SimulatedClock(int64_t initial_time_us);
|
|
|
|
virtual ~SimulatedClock();
|
|
|
|
// Return a timestamp in milliseconds relative to some arbitrary source; the
|
|
// source is fixed for this clock.
|
|
virtual int64_t TimeInMilliseconds() const OVERRIDE;
|
|
|
|
// Return a timestamp in microseconds relative to some arbitrary source; the
|
|
// source is fixed for this clock.
|
|
virtual int64_t TimeInMicroseconds() const OVERRIDE;
|
|
|
|
// Retrieve an NTP absolute timestamp in milliseconds.
|
|
virtual void CurrentNtp(uint32_t& seconds,
|
|
uint32_t& fractions) const OVERRIDE;
|
|
|
|
// Converts an NTP timestamp to a millisecond timestamp.
|
|
virtual int64_t CurrentNtpInMilliseconds() const OVERRIDE;
|
|
|
|
// Advance the simulated clock with a given number of milliseconds or
|
|
// microseconds.
|
|
void AdvanceTimeMilliseconds(int64_t milliseconds);
|
|
void AdvanceTimeMicroseconds(int64_t microseconds);
|
|
|
|
private:
|
|
int64_t time_us_;
|
|
scoped_ptr<RWLockWrapper> lock_;
|
|
};
|
|
|
|
}; // namespace webrtc
|
|
|
|
#endif // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CLOCK_H_
|