chromium/third_party/webrtc_overrides/metronome_source.h

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_WEBRTC_OVERRIDES_METRONOME_SOURCE_H_
#define THIRD_PARTY_BLINK_WEBRTC_OVERRIDES_METRONOME_SOURCE_H_

#include <atomic>
#include <set>
#include <vector>

#include "base/functional/callback.h"
#include "base/functional/callback_forward.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/synchronization/lock.h"
#include "base/synchronization/waitable_event.h"
#include "base/task/delayed_task_handle.h"
#include "base/task/sequenced_task_runner.h"
#include "base/thread_annotations.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "third_party/webrtc/api/metronome/metronome.h"
#include "third_party/webrtc/rtc_base/system/rtc_export.h"

namespace blink {

// The MetronomeSource ticks at a constant frequency, scheduling to wake up on
// ticks where listeners have work to do, and not scheduling to wake up on ticks
// where there is no work to do.
//
// When coalescing a large number of wakeup sources onto the MetronomeSource,
// this should reduce package Idle Wake Ups with potential to improve
// performance.
//
// The public API of the class except construction is meant to run on
// `metronome_task_runner`.
//
// `webrtc_component` does not have a test binary. See
// /third_party/blink/renderer/platform/peerconnection/metronome_source_test.cc
// for testing.
class RTC_EXPORT MetronomeSource final { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_WEBRTC_OVERRIDES_METRONOME_SOURCE_H_