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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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