From 869347fc62bcb1f1e5ccdd403c952b21bc9b1ab7 Mon Sep 17 00:00:00 2001
From: Jeff Brown <jeffbrown@google.com>
Date: Thu, 19 Aug 2010 11:55:13 -0700
Subject: [PATCH] Make the throttling more sensitive to end-to-end latency.

The code now takes into account the time when the event was generated.
So with a 60Hz throttling rate, it ensures that a motion event will not
be delayed due to throttling by any more than 1/60th of second past
the time it was generated.

Change-Id: Iaea1d4f76e79036b4a18873485230731c3cd63c3
---
 libs/ui/InputDispatcher.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libs/ui/InputDispatcher.cpp b/libs/ui/InputDispatcher.cpp
index ce616a475..e35050cb6 100644
--- a/libs/ui/InputDispatcher.cpp
+++ b/libs/ui/InputDispatcher.cpp
@@ -201,7 +201,8 @@ void InputDispatcher::dispatchOnce() {
                     }
 #endif
 
-                    mThrottleState.lastEventTime = currentTime;
+                    mThrottleState.lastEventTime = entry->eventTime < currentTime
+                            ? entry->eventTime : currentTime;
                     mThrottleState.lastDeviceId = deviceId;
                     mThrottleState.lastSource = source;
                 }