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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "cc/scheduler/begin_frame_source.h" | 5 #include "cc/scheduler/begin_frame_source.h" |
| 6 | 6 |
| 7 #include "base/auto_reset.h" | 7 #include "base/auto_reset.h" |
| 8 #include "base/debug/trace_event.h" | 8 #include "base/debug/trace_event.h" |
| 9 #include "base/debug/trace_event_argument.h" | 9 #include "base/debug/trace_event_argument.h" |
| 10 #include "base/logging.h" | 10 #include "base/logging.h" |
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| 174 weak_factory_.GetWeakPtr())); | 174 weak_factory_.GetWeakPtr())); |
| 175 } | 175 } |
| 176 | 176 |
| 177 void BackToBackBeginFrameSource::BeginFrame() { | 177 void BackToBackBeginFrameSource::BeginFrame() { |
| 178 send_begin_frame_posted_ = false; | 178 send_begin_frame_posted_ = false; |
| 179 | 179 |
| 180 if (!needs_begin_frames_) | 180 if (!needs_begin_frames_) |
| 181 return; | 181 return; |
| 182 | 182 |
| 183 base::TimeTicks now = Now(); | 183 base::TimeTicks now = Now(); |
| 184 BeginFrameArgs args = | 184 BeginFrameArgs args = BeginFrameArgs::Create( |
| 185 BeginFrameArgs::Create(now, | 185 now, now + BeginFrameArgs::DefaultInterval(), |
| 186 now + BeginFrameArgs::DefaultInterval(), | 186 BeginFrameArgs::DefaultInterval(), BeginFrameArgs::NORMAL); |
| 187 BeginFrameArgs::DefaultInterval()); | |
| 188 CallOnBeginFrame(args); | 187 CallOnBeginFrame(args); |
| 189 } | 188 } |
| 190 | 189 |
| 191 // BeginFrameSource support | 190 // BeginFrameSource support |
| 192 | 191 |
| 193 void BackToBackBeginFrameSource::DidFinishFrame(size_t remaining_frames) { | 192 void BackToBackBeginFrameSource::DidFinishFrame(size_t remaining_frames) { |
| 194 if (remaining_frames == 0) { | 193 if (remaining_frames == 0) { |
| 195 OnNeedsBeginFramesChange(NeedsBeginFrames()); | 194 OnNeedsBeginFramesChange(NeedsBeginFrames()); |
| 196 } | 195 } |
| 197 } | 196 } |
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| 236 void SyntheticBeginFrameSource::OnUpdateVSyncParameters( | 235 void SyntheticBeginFrameSource::OnUpdateVSyncParameters( |
| 237 base::TimeTicks new_vsync_timebase, | 236 base::TimeTicks new_vsync_timebase, |
| 238 base::TimeDelta new_vsync_interval) { | 237 base::TimeDelta new_vsync_interval) { |
| 239 time_source_->SetTimebaseAndInterval(new_vsync_timebase, new_vsync_interval); | 238 time_source_->SetTimebaseAndInterval(new_vsync_timebase, new_vsync_interval); |
| 240 } | 239 } |
| 241 | 240 |
| 242 BeginFrameArgs SyntheticBeginFrameSource::CreateBeginFrameArgs( | 241 BeginFrameArgs SyntheticBeginFrameSource::CreateBeginFrameArgs( |
| 243 base::TimeTicks frame_time, | 242 base::TimeTicks frame_time, |
| 244 BeginFrameArgs::BeginFrameArgsType type) { | 243 BeginFrameArgs::BeginFrameArgsType type) { |
| 245 base::TimeTicks deadline = time_source_->NextTickTime(); | 244 base::TimeTicks deadline = time_source_->NextTickTime(); |
| 246 return BeginFrameArgs::CreateTyped( | 245 return BeginFrameArgs::Create(frame_time, deadline, time_source_->Interval(), |
| 247 frame_time, deadline, time_source_->Interval(), type); | 246 type); |
| 248 } | 247 } |
| 249 | 248 |
| 250 // TimeSourceClient support | 249 // TimeSourceClient support |
| 251 void SyntheticBeginFrameSource::OnTimerTick() { | 250 void SyntheticBeginFrameSource::OnTimerTick() { |
| 252 CallOnBeginFrame(CreateBeginFrameArgs(time_source_->LastTickTime(), | 251 CallOnBeginFrame(CreateBeginFrameArgs(time_source_->LastTickTime(), |
| 253 BeginFrameArgs::NORMAL)); | 252 BeginFrameArgs::NORMAL)); |
| 254 } | 253 } |
| 255 | 254 |
| 256 // BeginFrameSourceMixIn support | 255 // BeginFrameSourceMixIn support |
| 257 void SyntheticBeginFrameSource::OnNeedsBeginFramesChange( | 256 void SyntheticBeginFrameSource::OnNeedsBeginFramesChange( |
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| 483 if (!observer_->LastUsedBeginFrameArgs().IsValid()) | 482 if (!observer_->LastUsedBeginFrameArgs().IsValid()) |
| 484 return true; | 483 return true; |
| 485 | 484 |
| 486 // Only allow new args have a *strictly bigger* frame_time value and statisfy | 485 // Only allow new args have a *strictly bigger* frame_time value and statisfy |
| 487 // minimum interval requirement. | 486 // minimum interval requirement. |
| 488 return (args.frame_time >= | 487 return (args.frame_time >= |
| 489 observer_->LastUsedBeginFrameArgs().frame_time + minimum_interval_); | 488 observer_->LastUsedBeginFrameArgs().frame_time + minimum_interval_); |
| 490 } | 489 } |
| 491 | 490 |
| 492 } // namespace cc | 491 } // namespace cc |
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