SF: tune infrequent layers for animations
Classify a layer as frequent or not based the last buffer pattern.
When unknown (e.g. the first buffer after inactivity), return
the last known state of the layer. This change helps to correctly classify
animating layers that were inactive and now posts the first buffer.
Bug: 264952266
Test: atest libsurfaceflinger_unittest
Change-Id: Ie6a1a21c00f7bb58468da033e98d5e35eb0c4c8d
diff --git a/services/surfaceflinger/Scheduler/LayerInfo.h b/services/surfaceflinger/Scheduler/LayerInfo.h
index a5ffbbe..93485be 100644
--- a/services/surfaceflinger/Scheduler/LayerInfo.h
+++ b/services/surfaceflinger/Scheduler/LayerInfo.h
@@ -53,7 +53,7 @@
// Layer is considered frequent if the earliest value in the window of most recent present times
// is within a threshold. If a layer is infrequent, its average refresh rate is disregarded in
// favor of a low refresh rate.
- static constexpr size_t kFrequentLayerWindowSize = 3;
+ static constexpr size_t kFrequentLayerWindowSize = 4;
static constexpr Fps kMinFpsForFrequentLayer = 10_Hz;
static constexpr auto kMaxPeriodForFrequentLayerNs =
std::chrono::nanoseconds(kMinFpsForFrequentLayer.getPeriodNsecs()) + 1ms;
@@ -214,7 +214,10 @@
Fps reported;
// Whether the last reported rate for LayerInfo::getRefreshRate()
// was due to animation or infrequent updates
- bool animatingOrInfrequent = false;
+ bool animating = false;
+ // Whether the last reported rate for LayerInfo::getRefreshRate()
+ // was due to infrequent updates
+ bool infrequent = false;
};
// Class to store past calculated refresh rate and determine whether