VSyncClient(Testing) Category Reference

Instance Methods
(CADisplayLink *)	- getDisplayLink
(CADisplayLink *)	- getDisplayLink
(void)	- onDisplayLink:

Detailed Description

Definition at line 182 of file FlutterViewControllerTest.mm.

Method Documentation

getDisplayLink [1/2]

- (CADisplayLink *) getDisplayLink

Extends class VSyncClient.

Definition at line 63 of file vsync_waiter_ios.mm.

                                 {
  return _displayLink;
}

getDisplayLink [2/2]

- (CADisplayLink *) getDisplayLink

onDisplayLink:

- (void) onDisplayLink:

(CADisplayLink *)

link

Extends class VSyncClient.

Definition at line 63 of file vsync_waiter_ios.mm.

                     :(CADisplayLink*)link {
  CFTimeInterval delay = CACurrentMediaTime() - link.timestamp;
  fml::TimePoint frame_start_time = fml::TimePoint::Now() - fml::TimeDelta::FromSecondsF(delay);
 
  CFTimeInterval duration = link.targetTimestamp - link.timestamp;
  fml::TimePoint frame_target_time = frame_start_time + fml::TimeDelta::FromSecondsF(duration);
 
  TRACE_EVENT2_INT("flutter", "PlatformVsync", "frame_start_time",
                   frame_start_time.ToEpochDelta().ToMicroseconds(), "frame_target_time",
                   frame_target_time.ToEpochDelta().ToMicroseconds());
 
  std::unique_ptr<flutter::FrameTimingsRecorder> recorder =
      std::make_unique<flutter::FrameTimingsRecorder>();
 
  _refreshRate = round(1 / (frame_target_time - frame_start_time).ToSecondsF());
 
  recorder->RecordVsync(frame_start_time, frame_target_time);
  if (_allowPauseAfterVsync) {
    link.paused = YES;
  }
  _callback(std::move(recorder));
}

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The documentation for this category was generated from the following files:

• shell/platform/darwin/ios/framework/Source/FlutterViewControllerTest.mm
• shell/platform/darwin/ios/framework/Source/VsyncWaiterIosTest.mm