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| 1 // Copyright 2013 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 "cc/scheduler/vsync_time_source.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 | |
| 9 namespace cc { | |
| 10 | |
| 11 scoped_refptr<VSyncTimeSource> VSyncTimeSource::Create( | |
| 12 VSyncProvider* vsync_provider, NotificationDisableOption option) { | |
| 13 return make_scoped_refptr(new VSyncTimeSource(vsync_provider, option)); | |
| 14 } | |
| 15 | |
| 16 VSyncTimeSource::VSyncTimeSource( | |
| 17 VSyncProvider* vsync_provider, NotificationDisableOption option) | |
| 18 : active_(false), | |
| 19 notification_requested_(false), | |
| 20 vsync_provider_(vsync_provider), | |
| 21 client_(NULL), | |
| 22 disable_option_(option) {} | |
| 23 | |
| 24 VSyncTimeSource::~VSyncTimeSource() {} | |
| 25 | |
| 26 void VSyncTimeSource::SetClient(TimeSourceClient* client) { | |
| 27 client_ = client; | |
| 28 } | |
| 29 | |
| 30 void VSyncTimeSource::SetActive(bool active) { | |
| 31 if (active_ == active) | |
| 32 return; | |
| 33 active_ = active; | |
| 34 if (active_ && !notification_requested_) { | |
| 35 notification_requested_ = true; | |
| 36 vsync_provider_->RequestVSyncNotification(this); | |
| 37 } | |
| 38 if (!active_ && disable_option_ == DISABLE_SYNCHRONOUSLY) { | |
| 39 notification_requested_ = false; | |
| 40 vsync_provider_->RequestVSyncNotification(NULL); | |
| 41 } | |
| 42 } | |
| 43 | |
| 44 bool VSyncTimeSource::Active() const { | |
| 45 return active_; | |
| 46 } | |
| 47 | |
| 48 base::TimeTicks VSyncTimeSource::LastTickTime() { | |
| 49 return last_tick_time_; | |
| 50 } | |
| 51 | |
| 52 base::TimeTicks VSyncTimeSource::NextTickTime() { | |
| 53 return Active() ? last_tick_time_ + interval_ : base::TimeTicks(); | |
| 54 } | |
| 55 | |
| 56 void VSyncTimeSource::SetTimebaseAndInterval(base::TimeTicks, | |
| 57 base::TimeDelta interval) { | |
| 58 interval_ = interval; | |
| 59 } | |
| 60 | |
| 61 void VSyncTimeSource::DidVSync(base::TimeTicks frame_time) { | |
| 62 last_tick_time_ = frame_time; | |
| 63 if (disable_option_ == DISABLE_SYNCHRONOUSLY) { | |
| 64 DCHECK(active_); | |
| 65 } else if (!active_) { | |
| 66 if (notification_requested_) { | |
| 67 notification_requested_ = false; | |
| 68 vsync_provider_->RequestVSyncNotification(NULL); | |
| 69 } | |
| 70 return; | |
| 71 } | |
| 72 if (client_) | |
| 73 client_->OnTimerTick(); | |
| 74 } | |
| 75 | |
| 76 } // namespace cc | |
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Chromium Code Reviews
Issue 16833003:
cc: Emulate BeginFrame in OutputSurfaces that don't support it natively (Closed)
Base URL: http://git.chromium.org/chromium/src.git@master