SurfaceFlinger: clear LayerHistory on touch
Clear LayerHistory and mark all layers as inactive when getting
a touch event to prevent a quick refresh rate bounce as LayerHistory
picks up with the FPS.
Fixes: 134663749
Test: live wallpaper + Open notification shade + wait for 60Hz + Click on "USB debugging connected"
Change-Id: Ifa095fbcdb95ffe413cc77c5e062f1174815158b
diff --git a/services/surfaceflinger/Scheduler/LayerHistory.cpp b/services/surfaceflinger/Scheduler/LayerHistory.cpp
index 1db43a3..e762af3 100644
--- a/services/surfaceflinger/Scheduler/LayerHistory.cpp
+++ b/services/surfaceflinger/Scheduler/LayerHistory.cpp
@@ -173,5 +173,18 @@
}
}
+void LayerHistory::clearHistory() {
+ std::lock_guard lock(mLock);
+
+ auto it = mActiveLayerInfos.begin();
+ while (it != mActiveLayerInfos.end()) {
+ auto id = it->first;
+ auto layerInfo = it->second;
+ layerInfo->clearHistory();
+ mInactiveLayerInfos.insert({id, layerInfo});
+ it = mActiveLayerInfos.erase(it);
+ }
+}
+
} // namespace scheduler
} // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/Scheduler/LayerHistory.h b/services/surfaceflinger/Scheduler/LayerHistory.h
index adc5ce5..2569b46 100644
--- a/services/surfaceflinger/Scheduler/LayerHistory.h
+++ b/services/surfaceflinger/Scheduler/LayerHistory.h
@@ -64,6 +64,9 @@
// layers. See go/content-fps-detection-in-scheduler for more information.
std::pair<float, bool> getDesiredRefreshRateAndHDR();
+ // Clears all layer history.
+ void clearHistory();
+
// Removes the handle and the object from the map.
void destroyLayer(const int64_t id);
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index e2a348e..da9526a 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -404,6 +404,10 @@
if (mSupportKernelTimer) {
resetIdleTimer();
}
+
+ // Touch event will boost the refresh rate to performance.
+ // Clear Layer History to get fresh FPS detection
+ mLayerHistory.clearHistory();
}
void Scheduler::resetTimerCallback() {
