@Override
public void onVSync(VSyncMonitor monitor, long vsyncTimeMicros) {
if (mNeedToRender) {
if (mPendingSwapBuffers + mPendingRenders <= MAX_SWAP_BUFFER_COUNT) {
mNeedToRender = false;
mPendingRenders++;
render();
} else {
TraceEvent.instant("ContentViewRenderView:bail");
}
}
if (mVSyncListener != null) {
if (mVSyncNotificationEnabled) {
for (mCurrentVSyncListenersIterator.rewind();
mCurrentVSyncListenersIterator.hasNext(); ) {
mCurrentVSyncListenersIterator.next().onVSync(vsyncTimeMicros);
}
mVSyncMonitor.requestUpdate();
} else {
// Compensate for input event lag. Input events are delivered immediately on
// pre-JB releases, so this adjustment is only done for later versions.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
vsyncTimeMicros += INPUT_EVENT_LAG_FROM_VSYNC_MICROSECONDS;
}
mVSyncListener.updateVSync(vsyncTimeMicros, mVSyncMonitor.getVSyncPeriodInMicroseconds());
}
}
}
void requestUpdate() {
mVSyncMonitor.requestUpdate();
}
void setVSyncListener(VSyncManager.Listener listener) {
mVSyncListener = listener;
if (mVSyncListener != null) mVSyncMonitor.requestUpdate();
}
@Override
public void registerVSyncListener(VSyncManager.Listener listener) {
if (!mVSyncNotificationEnabled) mVSyncMonitor.requestUpdate();
mCurrentVSyncListeners.addObserver(listener);
mVSyncNotificationEnabled = true;
}
