Merge Android 24Q2 Release (ab/11526283) to aosp-main-future

Bug: 337098550
Merged-In: I8d975b81afd2cde1d543e8bc7e730a6e42393bec
Change-Id: I714982d2b0df34afc9f9729deb2636de5d0c7b64

1 files changed, 146 insertions, 64 deletions

diff --git a/libs/input/VelocityControl.cpp b/libs/input/VelocityControl.cpp
index c835a081a5..edd31e91d3 100644
--- a/libs/input/VelocityControl.cpp
+++ b/libs/input/VelocityControl.cpp
@@ -15,7 +15,6 @@
  */
 
 #define LOG_TAG "VelocityControl"
-//#define LOG_NDEBUG 0
 
 // Log debug messages about acceleration.
 static constexpr bool DEBUG_ACCELERATION = false;
@@ -23,6 +22,7 @@ static constexpr bool DEBUG_ACCELERATION = false;
 #include <math.h>
 #include <limits.h>
 
+#include <android-base/logging.h>
 #include <input/VelocityControl.h>
 #include <utils/BitSet.h>
 #include <utils/Timers.h>
@@ -37,15 +37,6 @@ VelocityControl::VelocityControl() {
     reset();
 }
 
-const VelocityControlParameters& VelocityControl::getParameters() const{
-    return mParameters;
-}
-
-void VelocityControl::setParameters(const VelocityControlParameters& parameters) {
-    mParameters = parameters;
-    reset();
-}
-
 void VelocityControl::reset() {
     mLastMovementTime = LLONG_MIN;
     mRawPositionX = 0;
@@ -54,65 +45,156 @@ void VelocityControl::reset() {
 }
 
 void VelocityControl::move(nsecs_t eventTime, float* deltaX, float* deltaY) {
-    if ((deltaX && *deltaX) || (deltaY && *deltaY)) {
-        if (eventTime >= mLastMovementTime + STOP_TIME) {
-            if (DEBUG_ACCELERATION && mLastMovementTime != LLONG_MIN) {
-                ALOGD("VelocityControl: stopped, last movement was %0.3fms ago",
-                           (eventTime - mLastMovementTime) * 0.000001f);
-            }
-            reset();
-        }
+    if ((deltaX == nullptr || *deltaX == 0) && (deltaY == nullptr || *deltaY == 0)) {
+        return;
+    }
+    if (eventTime >= mLastMovementTime + STOP_TIME) {
+        ALOGD_IF(DEBUG_ACCELERATION && mLastMovementTime != LLONG_MIN,
+                 "VelocityControl: stopped, last movement was %0.3fms ago",
+                 (eventTime - mLastMovementTime) * 0.000001f);
+        reset();
+    }
 
-        mLastMovementTime = eventTime;
-        if (deltaX) {
-            mRawPositionX += *deltaX;
-        }
-        if (deltaY) {
-            mRawPositionY += *deltaY;
-        }
-        mVelocityTracker.addMovement(eventTime, /*pointerId=*/0, AMOTION_EVENT_AXIS_X,
-                                     mRawPositionX);
-        mVelocityTracker.addMovement(eventTime, /*pointerId=*/0, AMOTION_EVENT_AXIS_Y,
-                                     mRawPositionY);
-
-        std::optional<float> vx = mVelocityTracker.getVelocity(AMOTION_EVENT_AXIS_X, 0);
-        std::optional<float> vy = mVelocityTracker.getVelocity(AMOTION_EVENT_AXIS_Y, 0);
-        float scale = mParameters.scale;
-        if (vx && vy) {
-            float speed = hypotf(*vx, *vy) * scale;
-            if (speed >= mParameters.highThreshold) {
-                // Apply full acceleration above the high speed threshold.
-                scale *= mParameters.acceleration;
-            } else if (speed > mParameters.lowThreshold) {
-                // Linearly interpolate the acceleration to apply between the low and high
-                // speed thresholds.
-                scale *= 1 + (speed - mParameters.lowThreshold)
-                        / (mParameters.highThreshold - mParameters.lowThreshold)
-                        * (mParameters.acceleration - 1);
-            }
-
-            if (DEBUG_ACCELERATION) {
-                ALOGD("VelocityControl(%0.3f, %0.3f, %0.3f, %0.3f): "
-                      "vx=%0.3f, vy=%0.3f, speed=%0.3f, accel=%0.3f",
-                      mParameters.scale, mParameters.lowThreshold, mParameters.highThreshold,
-                      mParameters.acceleration, *vx, *vy, speed, scale / mParameters.scale);
-            }
-
-        } else {
-            if (DEBUG_ACCELERATION) {
-                ALOGD("VelocityControl(%0.3f, %0.3f, %0.3f, %0.3f): unknown velocity",
-                        mParameters.scale, mParameters.lowThreshold, mParameters.highThreshold,
-                        mParameters.acceleration);
-            }
-        }
+    mLastMovementTime = eventTime;
+    if (deltaX) {
+        mRawPositionX += *deltaX;
+    }
+    if (deltaY) {
+        mRawPositionY += *deltaY;
+    }
+    mVelocityTracker.addMovement(eventTime, /*pointerId=*/0, AMOTION_EVENT_AXIS_X, mRawPositionX);
+    mVelocityTracker.addMovement(eventTime, /*pointerId=*/0, AMOTION_EVENT_AXIS_Y, mRawPositionY);
+    scaleDeltas(deltaX, deltaY);
+}
+
+// --- SimpleVelocityControl ---
+
+const VelocityControlParameters& SimpleVelocityControl::getParameters() const {
+    return mParameters;
+}
 
-        if (deltaX) {
-            *deltaX *= scale;
+void SimpleVelocityControl::setParameters(const VelocityControlParameters& parameters) {
+    mParameters = parameters;
+    reset();
+}
+
+void SimpleVelocityControl::scaleDeltas(float* deltaX, float* deltaY) {
+    std::optional<float> vx = mVelocityTracker.getVelocity(AMOTION_EVENT_AXIS_X, 0);
+    std::optional<float> vy = mVelocityTracker.getVelocity(AMOTION_EVENT_AXIS_Y, 0);
+    float scale = mParameters.scale;
+    if (vx.has_value() && vy.has_value()) {
+        float speed = hypotf(*vx, *vy) * scale;
+        if (speed >= mParameters.highThreshold) {
+            // Apply full acceleration above the high speed threshold.
+            scale *= mParameters.acceleration;
+        } else if (speed > mParameters.lowThreshold) {
+            // Linearly interpolate the acceleration to apply between the low and high
+            // speed thresholds.
+            scale *= 1 +
+                    (speed - mParameters.lowThreshold) /
+                            (mParameters.highThreshold - mParameters.lowThreshold) *
+                            (mParameters.acceleration - 1);
         }
-        if (deltaY) {
-            *deltaY *= scale;
+
+        ALOGD_IF(DEBUG_ACCELERATION,
+                 "SimpleVelocityControl(%0.3f, %0.3f, %0.3f, %0.3f): "
+                 "vx=%0.3f, vy=%0.3f, speed=%0.3f, accel=%0.3f",
+                 mParameters.scale, mParameters.lowThreshold, mParameters.highThreshold,
+                 mParameters.acceleration, *vx, *vy, speed, scale / mParameters.scale);
+
+    } else {
+        ALOGD_IF(DEBUG_ACCELERATION,
+                 "SimpleVelocityControl(%0.3f, %0.3f, %0.3f, %0.3f): unknown velocity",
+                 mParameters.scale, mParameters.lowThreshold, mParameters.highThreshold,
+                 mParameters.acceleration);
+    }
+
+    if (deltaX != nullptr) {
+        *deltaX *= scale;
+    }
+    if (deltaY != nullptr) {
+        *deltaY *= scale;
+    }
+}
+
+// --- CurvedVelocityControl ---
+
+namespace {
+
+/**
+ * The resolution that we assume a mouse to have, in counts per inch.
+ *
+ * Mouse resolutions vary wildly, but 800 CPI is probably the most common. There should be enough
+ * range in the available sensitivity settings to accommodate users of mice with other resolutions.
+ */
+constexpr int32_t MOUSE_CPI = 800;
+
+float countsToMm(float counts) {
+    return counts / MOUSE_CPI * 25.4;
+}
+
+} // namespace
+
+CurvedVelocityControl::CurvedVelocityControl()
+      : mCurveSegments(createAccelerationCurveForPointerSensitivity(0)) {}
+
+void CurvedVelocityControl::setCurve(const std::vector<AccelerationCurveSegment>& curve) {
+    mCurveSegments = curve;
+}
+
+void CurvedVelocityControl::setAccelerationEnabled(bool enabled) {
+    mAccelerationEnabled = enabled;
+}
+
+void CurvedVelocityControl::scaleDeltas(float* deltaX, float* deltaY) {
+    if (!mAccelerationEnabled) {
+        ALOGD_IF(DEBUG_ACCELERATION, "CurvedVelocityControl: acceleration disabled");
+        return;
+    }
+
+    std::optional<float> vx = mVelocityTracker.getVelocity(AMOTION_EVENT_AXIS_X, 0);
+    std::optional<float> vy = mVelocityTracker.getVelocity(AMOTION_EVENT_AXIS_Y, 0);
+
+    float ratio;
+    if (vx.has_value() && vy.has_value()) {
+        float vxMmPerS = countsToMm(*vx);
+        float vyMmPerS = countsToMm(*vy);
+        float speedMmPerS = sqrtf(vxMmPerS * vxMmPerS + vyMmPerS * vyMmPerS);
+
+        const AccelerationCurveSegment& seg = segmentForSpeed(speedMmPerS);
+        ratio = seg.baseGain + seg.reciprocal / speedMmPerS;
+        ALOGD_IF(DEBUG_ACCELERATION,
+                 "CurvedVelocityControl: velocities (%0.3f, %0.3f) → speed %0.3f → ratio %0.3f",
+                 vxMmPerS, vyMmPerS, speedMmPerS, ratio);
+    } else {
+        // We don't have enough data to compute a velocity yet. This happens early in the movement,
+        // when the speed is presumably low, so use the base gain of the first segment of the curve.
+        // (This would behave oddly for curves with a reciprocal term on the first segment, but we
+        // don't have any of those, and they'd be very strange at velocities close to zero anyway.)
+        ratio = mCurveSegments[0].baseGain;
+        ALOGD_IF(DEBUG_ACCELERATION,
+                 "CurvedVelocityControl: unknown velocity, using base gain of first segment (%.3f)",
+                 ratio);
+    }
+
+    if (deltaX != nullptr) {
+        *deltaX *= ratio;
+    }
+    if (deltaY != nullptr) {
+        *deltaY *= ratio;
+    }
+}
+
+const AccelerationCurveSegment& CurvedVelocityControl::segmentForSpeed(float speedMmPerS) {
+    for (const AccelerationCurveSegment& seg : mCurveSegments) {
+        if (speedMmPerS <= seg.maxPointerSpeedMmPerS) {
+            return seg;
         }
     }
+    ALOGE("CurvedVelocityControl: No segment found for speed %.3f; last segment should always have "
+          "a max speed of infinity.",
+          speedMmPerS);
+    return mCurveSegments.back();
 }
 
 } // namespace android