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| author | Mathias Agopian <mathias@google.com> | 2012-10-29 16:53:19 -0700 |
|---|---|---|
| committer | Android Git Automerger <android-git-automerger@android.com> | 2012-10-29 16:53:19 -0700 |
| commit | e4335adad2c726c6ac49927ae71cecfc8089c3f3 (patch) | |
| tree | 66304862b0988769a075777a161139d49bdc05c7 /core/java/android | |
| parent | d9910249a4127c351f23d46623df645750d3d21e (diff) | |
| parent | 0da554acfbf7cf0b8e522c5b8b83588cf6f72ddf (diff) | |
| download | frameworks_base-e4335adad2c726c6ac49927ae71cecfc8089c3f3.zip frameworks_base-e4335adad2c726c6ac49927ae71cecfc8089c3f3.tar.gz frameworks_base-e4335adad2c726c6ac49927ae71cecfc8089c3f3.tar.bz2 | |
am 0da554ac: Merge "fix an overflow in the orientation sensonr calculations" into jb-mr1-dev
* commit '0da554acfbf7cf0b8e522c5b8b83588cf6f72ddf':
fix an overflow in the orientation sensonr calculations
Diffstat (limited to 'core/java/android')
| -rw-r--r-- | core/java/android/hardware/LegacySensorManager.java | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/core/java/android/hardware/LegacySensorManager.java b/core/java/android/hardware/LegacySensorManager.java index 62c194f..f959093 100644 --- a/core/java/android/hardware/LegacySensorManager.java +++ b/core/java/android/hardware/LegacySensorManager.java @@ -371,7 +371,7 @@ final class LegacySensorManager { private static final float PREDICTION_RATIO = 1.0f/3.0f; private static final float PREDICTION_TIME = (SENSORS_RATE_MS*COUNT/1000.0f)*PREDICTION_RATIO; private float mV[] = new float[COUNT*2]; - private float mT[] = new float[COUNT*2]; + private long mT[] = new long[COUNT*2]; private int mIndex; public LmsFilter() { @@ -381,7 +381,6 @@ final class LegacySensorManager { public float filter(long time, float in) { float v = in; final float ns = 1.0f / 1000000000.0f; - final float t = time*ns; float v1 = mV[mIndex]; if ((v-v1) > 180) { v -= 360; @@ -396,9 +395,9 @@ final class LegacySensorManager { if (mIndex >= COUNT*2) mIndex = COUNT; mV[mIndex] = v; - mT[mIndex] = t; + mT[mIndex] = time; mV[mIndex-COUNT] = v; - mT[mIndex-COUNT] = t; + mT[mIndex-COUNT] = time; float A, B, C, D, E; float a, b; @@ -408,8 +407,8 @@ final class LegacySensorManager { for (i=0 ; i<COUNT-1 ; i++) { final int j = mIndex - 1 - i; final float Z = mV[j]; - final float T = 0.5f*(mT[j] + mT[j+1]) - t; - float dT = mT[j] - mT[j+1]; + final float T = (mT[j]/2 + mT[j+1]/2 - time)*ns; + float dT = (mT[j] - mT[j+1])*ns; dT *= dT; A += Z*dT; B += T*(T*dT); |