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| author | Andrew de los Reyes <adlr@google.com> | 2015-10-02 02:22:46 +0000 |
|---|---|---|
| committer | Android Git Automerger <android-git-automerger@android.com> | 2015-10-02 02:22:46 +0000 |
| commit | c9b392395f3eada767cf9d1dce1eb40930ca1b95 (patch) | |
| tree | 846449de728a5197d6b1cdf402b33579e5bc2669 | |
| parent | bcf2901af9f5737f510b968ba9dda5ba58b86f8a (diff) | |
| parent | 6c51a07d30a3c4bed9675da88c5f6f24a741d9a2 (diff) | |
| download | frameworks_native-c9b392395f3eada767cf9d1dce1eb40930ca1b95.zip frameworks_native-c9b392395f3eada767cf9d1dce1eb40930ca1b95.tar.gz frameworks_native-c9b392395f3eada767cf9d1dce1eb40930ca1b95.tar.bz2 | |
am 6c51a07d: am de18f6c3: InputResampling: Don\'t extrapolate for very low frame rates.
* commit '6c51a07d30a3c4bed9675da88c5f6f24a741d9a2':
InputResampling: Don't extrapolate for very low frame rates.
| -rw-r--r-- | libs/input/InputTransport.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/libs/input/InputTransport.cpp b/libs/input/InputTransport.cpp index 0382f57..7f83da5 100644 --- a/libs/input/InputTransport.cpp +++ b/libs/input/InputTransport.cpp @@ -51,6 +51,10 @@ static const nsecs_t RESAMPLE_LATENCY = 5 * NANOS_PER_MS; // Minimum time difference between consecutive samples before attempting to resample. static const nsecs_t RESAMPLE_MIN_DELTA = 2 * NANOS_PER_MS; +// Maximum time difference between consecutive samples before attempting to resample +// by extrapolation. +static const nsecs_t RESAMPLE_MAX_DELTA = 20 * NANOS_PER_MS; + // Maximum time to predict forward from the last known state, to avoid predicting too // far into the future. This time is further bounded by 50% of the last time delta. static const nsecs_t RESAMPLE_MAX_PREDICTION = 8 * NANOS_PER_MS; @@ -724,7 +728,7 @@ void InputConsumer::resampleTouchState(nsecs_t sampleTime, MotionEvent* event, nsecs_t delta = future.eventTime - current->eventTime; if (delta < RESAMPLE_MIN_DELTA) { #if DEBUG_RESAMPLING - ALOGD("Not resampled, delta time is %lld ns.", delta); + ALOGD("Not resampled, delta time is too small: %lld ns.", delta); #endif return; } @@ -736,7 +740,12 @@ void InputConsumer::resampleTouchState(nsecs_t sampleTime, MotionEvent* event, nsecs_t delta = current->eventTime - other->eventTime; if (delta < RESAMPLE_MIN_DELTA) { #if DEBUG_RESAMPLING - ALOGD("Not resampled, delta time is %lld ns.", delta); + ALOGD("Not resampled, delta time is too small: %lld ns.", delta); +#endif + return; + } else if (delta > RESAMPLE_MAX_DELTA) { +#if DEBUG_RESAMPLING + ALOGD("Not resampled, delta time is too large: %lld ns.", delta); #endif return; } |