From ae8dfc2ac6f1630b0022630f30dadf3f9f228a2a Mon Sep 17 00:00:00 2001
From: Derek Wu <derekwu@google.com>
Date: Tue, 2 Apr 2024 01:30:21 -0700
Subject: Update jerk thresholds for prediction pruning.

Jerk thresholds are higher, which means less predictions are pruned.

Test: atest libinput_tests with local flag override to enable
enable_prediction_pruning_via_jerk_thresholding.
Test: atest CtsInputTestCases
Test: atest MotionPredictorBenchmark MotionPredictorTest
Test: Using stylus in a drawing app and seeing the predictions
Bug: 266747654

Change-Id: I430c4cd79bfe62a339b6c14964d7d7a91facf6c2
---
 data/etc/input/motion_predictor_config.xml | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

(limited to 'data')

diff --git a/data/etc/input/motion_predictor_config.xml b/data/etc/input/motion_predictor_config.xml
index a20993f924..c3f2fedc71 100644
--- a/data/etc/input/motion_predictor_config.xml
+++ b/data/etc/input/motion_predictor_config.xml
@@ -33,11 +33,9 @@
   <distance-noise-floor>0.2</distance-noise-floor>
   <!-- The low and high jerk thresholds for prediction pruning.
 
-    The jerk thresholds are based on normalized dt = 1 calculations, and
-    are taken from Jetpacks MotionEventPredictor's KalmanPredictor
-    implementation (using its ACCURATE_LOW_JANK and ACCURATE_HIGH_JANK).
+    The jerk thresholds are based on normalized dt = 1 calculations.
   -->
-  <low-jerk>0.1</low-jerk>
-  <high-jerk>0.2</high-jerk>
+  <low-jerk>1.0</low-jerk>
+  <high-jerk>1.1</high-jerk>
 </motion-predictor>
 
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