diff --git a/services/surfaceflinger/BufferLayer.h b/services/surfaceflinger/BufferLayer.h
index 63dfe5f..5cd9a7c 100644
--- a/services/surfaceflinger/BufferLayer.h
+++ b/services/surfaceflinger/BufferLayer.h
@@ -224,6 +224,18 @@
     std::unique_ptr<compositionengine::LayerFECompositionState> mCompositionState;
 
     FloatRect computeSourceBounds(const FloatRect& parentBounds) const override;
+
+    // Returns true if the next frame is considered too early to present
+    // at the given expectedPresentTime
+    bool frameIsEarly(nsecs_t expectedPresentTime) const;
+
+    // Returns the predicted present time of the next frame if available or
+    // 0 otherwise.
+    virtual nsecs_t nextPredictedPresentTime() const = 0;
+
+    // The amount of time SF can delay a frame if it is considered early based
+    // on the VsyncModulator::VsyncConfig::appWorkDuration
+    static constexpr std::chrono::nanoseconds kEarlyLatchMaxThreshold = 100ms;
 };
 
 } // namespace android