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// Copyright 2022 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_TIMER_BASED_TICK_PROVIDER_H_
#define THIRD_PARTY_BLINK_WEBRTC_OVERRIDES_TIMER_BASED_TICK_PROVIDER_H_
#include "base/functional/callback_forward.h"
#include "base/time/time.h"
#include "third_party/webrtc/rtc_base/system/rtc_export.h"
#include "third_party/webrtc_overrides/metronome_source.h"
namespace blink {
// Tick provider that generates ticks on a fixed specified cadence based on
// PostDelayedTaskAt.
class RTC_EXPORT TimerBasedTickProvider : public MetronomeSource::TickProvider {
public:
// The default metronome tick period.
static constexpr base::TimeDelta kDefaultPeriod = base::Hertz(64);
// Returns the time of the next default tick given a target `time` and
// `period`.
static base::TimeTicks TimeSnappedToNextTick(base::TimeTicks time,
base::TimeDelta period);
// Create with tick period `tick_period`.
explicit TimerBasedTickProvider(base::TimeDelta tick_period);
// TickProvider overrides.
void RequestCallOnNextTick(base::OnceClosure callback) override;
base::TimeDelta TickPeriod() override;
private:
const base::TimeDelta tick_period_;
};
}
#endif // THIRD_PARTY_BLINK_WEBRTC_OVERRIDES_TIMER_BASED_TICK_PROVIDER_H_
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