rhubarb-lip-sync/lib/webrtc-8d2248ff/webrtc/base/timing.h

42 lines
1.4 KiB
C++

/*
* Copyright 2008 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_BASE_TIMING_H_
#define WEBRTC_BASE_TIMING_H_
namespace rtc {
// TODO(deadbeef): Remove this and use ClockInterface instead.
class Timing {
public:
Timing();
virtual ~Timing();
// WallTimeNow() returns the current wall-clock time in seconds,
// within 10 milliseconds resolution.
// WallTimeNow is static and does not require a timer_handle_ on Windows.
static double WallTimeNow();
// TimerNow() is like WallTimeNow(), but is monotonically
// increasing. It returns seconds in resolution of 10 microseconds
// or better. Although timer and wall-clock time have the same
// timing unit, they do not necessarily correlate because wall-clock
// time may be adjusted backwards, hence not monotonic.
// Made virtual so we can make a fake one.
// TODO(tommi): The only place we use this (virtual) is in
// rtpdata_engine_unittest.cc. See if it doesn't make more sense to change
// that contract or test than to modify this generic class.
virtual double TimerNow();
};
} // namespace rtc
#endif // WEBRTC_BASE_TIMING_H_