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Commit 0a2f6640 authored by Jeff Brown's avatar Jeff Brown
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Make orientation changes happen sooner. 

Tweaked the window orientation listener to be less conservative
in its filtering.  Should shave a couple hundred milliseconds
off the rotation time.

Change-Id: If7dd5114b0941df6199fe81080ac94730cf797cf
parent 873057b3

core/java/android/view/WindowOrientationListener.java

+5 −5
Original line number Diff line number Diff line
@@ -321,18 +321,18 @@ public abstract class WindowOrientationListener { 
        private static final float ORIENTATION_ANGLE_CONFIDENCE_SCALE =

                confidenceScaleFromDelta(30);



        // Transition takes 2x longer when tilt is 45 degrees from vertical.

        private static final float TILT_ANGLE_CONFIDENCE_SCALE = confidenceScaleFromDelta(45);

        // Transition takes 2x longer when tilt is 60 degrees from vertical.

        private static final float TILT_ANGLE_CONFIDENCE_SCALE = confidenceScaleFromDelta(60);



        // Transition takes 2x longer when acceleration is 0.25 Gs.

        // Transition takes 2x longer when acceleration is 0.5 Gs.

        private static final float MAGNITUDE_CONFIDENCE_SCALE = confidenceScaleFromDelta(

                SensorManager.STANDARD_GRAVITY * 0.25f);

                SensorManager.STANDARD_GRAVITY * 0.5f);



        // The number of milliseconds for which a new orientation must be stable before

        // we perform an orientation change under ideal conditions.  It will take

        // proportionally longer than this to effect an orientation change when

        // the proposed orientation confidence is low.

        private static final float ORIENTATION_SETTLE_TIME_MS = 250;

        private static final float ORIENTATION_SETTLE_TIME_MS = 100;



        // The confidence that we have abount effecting each orientation change.

        // When one of these values exceeds 1.0, we have determined our new orientation!