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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "sky/scheduler/scheduler.h" | |
| 6 | |
| 7 namespace sky { | |
| 8 | |
| 9 Scheduler::Client::~Client() { | |
| 10 } | |
| 11 | |
| 12 Scheduler::Scheduler(Client* client, | |
| 13 scoped_refptr<base::SingleThreadTaskRunner> task_runner) | |
| 14 : client_(client), timer_(this, task_runner) { | |
| 15 } | |
| 16 | |
| 17 Scheduler::~Scheduler() { | |
| 18 } | |
| 19 | |
| 20 void Scheduler::SetNeedsFrame() { | |
| 21 timer_.SetEnabled(true); | |
| 22 } | |
| 23 | |
| 24 void Scheduler::UpdateFrameDuration(base::TimeDelta estimate) { | |
| 25 frame_duration_ = estimate; | |
| 26 UpdateTimerInterval(); | |
| 27 } | |
| 28 | |
| 29 void Scheduler::UpdateVSync(const TimeInterval& vsync) { | |
| 30 vsync_ = vsync; | |
| 31 UpdateTimerInterval(); | |
| 32 } | |
| 33 | |
| 34 void Scheduler::UpdateTimerInterval() { | |
| 35 TimeInterval interval = vsync_; | |
| 36 interval.base -= frame_duration_; | |
| 37 timer_.SetInterval(interval); | |
| 38 } | |
| 39 | |
| 40 void Scheduler::OnTimerTick(base::TimeTicks now) { | |
| 41 timer_.SetEnabled(false); | |
| 42 client_->BeginFrame(now, vsync_.NextAfter(now)); | |
| 43 // We might be deleted here. | |
| 44 } | |
| 45 } | |
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