Merge "Add flag to enable jerk prediction pruning." into main (ee9f1903) · Commits · e / os / android_frameworks_native

libs/input/MotionPredictor.cpp

+12 −1

Original line number	Diff line number	Diff line
		@@ -22,17 +22,21 @@
		#include <cmath>
		#include <cstddef>
		#include <cstdint>
		#include <limits>
		#include <string>
		#include <vector>

		#include <android-base/logging.h>
		#include <android-base/strings.h>
		#include <android/input.h>
		#include <com_android_input_flags.h>

		#include <attestation/HmacKeyManager.h>
		#include <ftl/enum.h>
		#include <input/TfLiteMotionPredictor.h>

		namespace input_flags = com::android::input::flags;

		namespace android {
		namespace {

		@@ -197,7 +201,14 @@ std::unique_ptr<MotionEvent> MotionPredictor::predict(nsecs_t timestamp) {
		// device starts to speed up, but avoids producing noisy predictions as it slows down.
		break;
		}
		// TODO(b/266747654): Stop predictions if confidence is < some threshold.
		if (input_flags::enable_jerk_prediction_pruning()) {
		// TODO(b/266747654): Stop predictions if confidence is < some threshold
		// Arbitrarily high pruning index, will correct once jerk thresholding is implemented.
		const size_t upperBoundPredictionIndex = std::numeric_limits<size_t>::max();
		if (i > upperBoundPredictionIndex) {
		break;
		}
		}

		const TfLiteMotionPredictorSample::Point predictedPoint =
		convertPrediction(axisFrom, axisTo, predictedR[i], predictedPhi[i]);

+7 −0

Original line number	Diff line number	Diff line
		@@ -128,3 +128,10 @@ flag {
		description: "Enable fling scrolling to be stopped by putting a finger on the touchpad again"
		bug: "281106755"
		}

		flag {
		name: "enable_jerk_prediction_pruning"
		namespace: "input"
		description: "Enable prediction pruning based on jerk thresholds."
		bug: "266747654"
		}