diff --git a/services/inputflinger/Android.bp b/services/inputflinger/Android.bp
index e3a237e..f73d498 100644
--- a/services/inputflinger/Android.bp
+++ b/services/inputflinger/Android.bp
@@ -16,21 +16,25 @@
     name: "libinputflinger",
 
     srcs: [
+        "InputClassifier.cpp",
         "InputDispatcher.cpp",
         "InputManager.cpp",
     ],
 
     shared_libs: [
+        "android.hardware.input.classifier@1.0",
         "libinputflinger_base",
         "libinputreporter",
         "libinputreader",
         "libbase",
         "libbinder",
         "libcutils",
+        "libhidlbase",
         "libinput",
         "liblog",
         "libutils",
         "libui",
+        "server_configurable_flags",
     ],
 
     cflags: [
@@ -38,7 +42,9 @@
         "-Wextra",
         "-Werror",
         "-Wno-unused-parameter",
-        // TODO: Move inputflinger to its own process and mark it hidden
+        // TODO(b/123097103): annotate InputDispatcher and uncomment the following line
+        //"-Wthread-safety",
+        // TODO(b/23084678): Move inputflinger to its own process and mark it hidden
         //-fvisibility=hidden
     ],
 
diff --git a/services/inputflinger/BlockingQueue.h b/services/inputflinger/BlockingQueue.h
new file mode 100644
index 0000000..b892120
--- /dev/null
+++ b/services/inputflinger/BlockingQueue.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _UI_INPUT_BLOCKING_QUEUE_H
+#define _UI_INPUT_BLOCKING_QUEUE_H
+
+#include <condition_variable>
+#include <mutex>
+#include <vector>
+
+namespace android {
+
+/**
+ * A FIFO queue that stores up to <i>capacity</i> objects.
+ * Objects can always be added. Objects are added immediately.
+ * If the queue is full, new objects cannot be added.
+ *
+ * The action of retrieving an object will block until an element is available.
+ */
+template <class T>
+class BlockingQueue {
+public:
+    BlockingQueue(size_t capacity) : mCapacity(capacity) {
+        mQueue.reserve(mCapacity);
+    };
+
+    /**
+     * Retrieve and remove the oldest object.
+     * Blocks execution while queue is empty.
+     */
+    T pop() {
+        std::unique_lock<std::mutex> lock(mLock);
+        mHasElements.wait(lock, [this]{ return !this->mQueue.empty(); });
+        T t = std::move(mQueue.front());
+        mQueue.erase(mQueue.begin());
+        return std::move(t);
+    };
+
+    /**
+     * Add a new object to the queue.
+     * Does not block.
+     * Return true if an element was successfully added.
+     * Return false if the queue is full.
+     */
+    bool push(T&& t) {
+        std::unique_lock<std::mutex> lock(mLock);
+        if (mQueue.size() == mCapacity) {
+            return false;
+        }
+        mQueue.push_back(std::move(t));
+        mHasElements.notify_one();
+        return true;
+    };
+
+    void erase(const std::function<bool(const T&)>& lambda) {
+        std::unique_lock<std::mutex> lock(mLock);
+        mQueue.erase(std::remove_if(mQueue.begin(), mQueue.end(),
+                [&lambda](const T& t) { return lambda(t); }), mQueue.end());
+    }
+
+    /**
+     * Remove all elements.
+     * Does not block.
+     */
+    void clear() {
+        std::scoped_lock lock(mLock);
+        mQueue.clear();
+    };
+
+private:
+    size_t mCapacity;
+    /**
+     * Used to signal that mQueue is non-empty.
+     */
+    std::condition_variable mHasElements;
+    /**
+     * Lock for accessing and waiting on elements.
+     */
+    std::mutex mLock;
+    std::vector<T> mQueue; //GUARDED_BY(mLock)
+};
+
+
+} // namespace android
+#endif
diff --git a/services/inputflinger/InputClassifier.cpp b/services/inputflinger/InputClassifier.cpp
new file mode 100644
index 0000000..11427c3
--- /dev/null
+++ b/services/inputflinger/InputClassifier.cpp
@@ -0,0 +1,692 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "InputClassifier"
+
+#include "InputClassifier.h"
+
+#include <algorithm>
+#include <cmath>
+#include <inttypes.h>
+#include <log/log.h>
+#if defined(__linux__)
+    #include <pthread.h>
+#endif
+#include <server_configurable_flags/get_flags.h>
+
+#include <android/hardware/input/classifier/1.0/IInputClassifier.h>
+
+using android::hardware::hidl_bitfield;
+using android::hardware::hidl_vec;
+using namespace android::hardware::input;
+
+namespace android {
+
+static constexpr bool DEBUG = false;
+
+// Category (=namespace) name for the input settings that are applied at boot time
+static const char* INPUT_NATIVE_BOOT = "input_native_boot";
+// Feature flag name for the deep press feature
+static const char* DEEP_PRESS_ENABLED = "deep_press_enabled";
+
+//Max number of elements to store in mEvents.
+static constexpr size_t MAX_EVENTS = 5;
+
+template<class K, class V>
+static V getValueForKey(const std::unordered_map<K, V>& map, K key, V defaultValue) {
+    auto it = map.find(key);
+    if (it == map.end()) {
+        return defaultValue;
+    }
+    return it->second;
+}
+
+static common::V1_0::Source getSource(uint32_t source) {
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_UNKNOWN) ==
+            common::V1_0::Source::UNKNOWN, "SOURCE_UNKNOWN mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_KEYBOARD) ==
+            common::V1_0::Source::KEYBOARD, "SOURCE_KEYBOARD mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_DPAD) ==
+            common::V1_0::Source::DPAD, "SOURCE_DPAD mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_GAMEPAD) ==
+            common::V1_0::Source::GAMEPAD, "SOURCE_GAMEPAD mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_TOUCHSCREEN) ==
+            common::V1_0::Source::TOUCHSCREEN, "SOURCE_TOUCHSCREEN mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_MOUSE) ==
+            common::V1_0::Source::MOUSE, "SOURCE_MOUSE mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_STYLUS) ==
+            common::V1_0::Source::STYLUS, "SOURCE_STYLUS mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_BLUETOOTH_STYLUS) ==
+            common::V1_0::Source::BLUETOOTH_STYLUS, "SOURCE_BLUETOOTH_STYLUS mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_TRACKBALL) ==
+            common::V1_0::Source::TRACKBALL, "SOURCE_TRACKBALL mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_MOUSE_RELATIVE) ==
+            common::V1_0::Source::MOUSE_RELATIVE, "SOURCE_MOUSE_RELATIVE mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_TOUCHPAD) ==
+            common::V1_0::Source::TOUCHPAD, "SOURCE_TOUCHPAD mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_TOUCH_NAVIGATION) ==
+            common::V1_0::Source::TOUCH_NAVIGATION, "SOURCE_TOUCH_NAVIGATION mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_JOYSTICK) ==
+            common::V1_0::Source::JOYSTICK, "SOURCE_JOYSTICK mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_ROTARY_ENCODER) ==
+            common::V1_0::Source::ROTARY_ENCODER, "SOURCE_ROTARY_ENCODER mismatch");
+    static_assert(static_cast<common::V1_0::Source>(AINPUT_SOURCE_ANY) ==
+            common::V1_0::Source::ANY, "SOURCE_ANY mismatch");
+    return static_cast<common::V1_0::Source>(source);
+}
+
+static common::V1_0::Action getAction(int32_t actionMasked) {
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_DOWN) ==
+            common::V1_0::Action::DOWN, "ACTION_DOWN mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_UP) ==
+            common::V1_0::Action::UP, "ACTION_UP mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_MOVE) ==
+            common::V1_0::Action::MOVE, "ACTION_MOVE mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_CANCEL) ==
+            common::V1_0::Action::CANCEL, "ACTION_CANCEL mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_OUTSIDE) ==
+            common::V1_0::Action::OUTSIDE, "ACTION_OUTSIDE mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_POINTER_DOWN) ==
+            common::V1_0::Action::POINTER_DOWN, "ACTION_POINTER_DOWN mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_POINTER_UP) ==
+            common::V1_0::Action::POINTER_UP, "ACTION_POINTER_UP mismatch");
+    static_assert(static_cast<common::V1_0::Action>( AMOTION_EVENT_ACTION_HOVER_MOVE) ==
+            common::V1_0::Action::HOVER_MOVE, "ACTION_HOVER_MOVE mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_SCROLL) ==
+            common::V1_0::Action::SCROLL, "ACTION_SCROLL mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_HOVER_ENTER) ==
+            common::V1_0::Action::HOVER_ENTER, "ACTION_HOVER_ENTER mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_HOVER_EXIT) ==
+            common::V1_0::Action::HOVER_EXIT, "ACTION_HOVER_EXIT mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_BUTTON_PRESS) ==
+            common::V1_0::Action::BUTTON_PRESS, "ACTION_BUTTON_PRESS mismatch");
+    static_assert(static_cast<common::V1_0::Action>(AMOTION_EVENT_ACTION_BUTTON_RELEASE) ==
+            common::V1_0::Action::BUTTON_RELEASE, "ACTION_BUTTON_RELEASE mismatch");
+    return static_cast<common::V1_0::Action>(actionMasked);
+}
+
+static common::V1_0::Button getActionButton(int32_t actionButton) {
+    static_assert(static_cast<common::V1_0::Button>(0) ==
+            common::V1_0::Button::NONE, "BUTTON_NONE mismatch");
+    static_assert(static_cast<common::V1_0::Button>(AMOTION_EVENT_BUTTON_PRIMARY) ==
+            common::V1_0::Button::PRIMARY, "BUTTON_PRIMARY mismatch");
+    static_assert(static_cast<common::V1_0::Button>(AMOTION_EVENT_BUTTON_SECONDARY) ==
+            common::V1_0::Button::SECONDARY, "BUTTON_SECONDARY mismatch");
+    static_assert(static_cast<common::V1_0::Button>(AMOTION_EVENT_BUTTON_TERTIARY) ==
+            common::V1_0::Button::TERTIARY, "BUTTON_TERTIARY mismatch");
+    static_assert(static_cast<common::V1_0::Button>(AMOTION_EVENT_BUTTON_BACK) ==
+            common::V1_0::Button::BACK, "BUTTON_BACK mismatch");
+    static_assert(static_cast<common::V1_0::Button>(AMOTION_EVENT_BUTTON_FORWARD) ==
+            common::V1_0::Button::FORWARD, "BUTTON_FORWARD mismatch");
+    static_assert(static_cast<common::V1_0::Button>(AMOTION_EVENT_BUTTON_STYLUS_PRIMARY) ==
+            common::V1_0::Button::STYLUS_PRIMARY, "BUTTON_STYLUS_PRIMARY mismatch");
+    static_assert(static_cast<common::V1_0::Button>(AMOTION_EVENT_BUTTON_STYLUS_SECONDARY) ==
+            common::V1_0::Button::STYLUS_SECONDARY, "BUTTON_STYLUS_SECONDARY mismatch");
+    return static_cast<common::V1_0::Button>(actionButton);
+}
+
+static hidl_bitfield<common::V1_0::Flag> getFlags(int32_t flags) {
+    static_assert(static_cast<common::V1_0::Flag>(AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED) ==
+            common::V1_0::Flag::WINDOW_IS_OBSCURED);
+    static_assert(static_cast<common::V1_0::Flag>(AMOTION_EVENT_FLAG_IS_GENERATED_GESTURE) ==
+            common::V1_0::Flag::IS_GENERATED_GESTURE);
+    static_assert(static_cast<common::V1_0::Flag>(AMOTION_EVENT_FLAG_TAINTED) ==
+            common::V1_0::Flag::TAINTED);
+    return static_cast<hidl_bitfield<common::V1_0::Flag>>(flags);
+}
+
+static hidl_bitfield<common::V1_0::PolicyFlag> getPolicyFlags(int32_t flags) {
+    static_assert(static_cast<common::V1_0::PolicyFlag>(POLICY_FLAG_WAKE) ==
+            common::V1_0::PolicyFlag::WAKE);
+    static_assert(static_cast<common::V1_0::PolicyFlag>(POLICY_FLAG_VIRTUAL) ==
+            common::V1_0::PolicyFlag::VIRTUAL);
+    static_assert(static_cast<common::V1_0::PolicyFlag>(POLICY_FLAG_FUNCTION) ==
+            common::V1_0::PolicyFlag::FUNCTION);
+    static_assert(static_cast<common::V1_0::PolicyFlag>(POLICY_FLAG_GESTURE) ==
+            common::V1_0::PolicyFlag::GESTURE);
+    static_assert(static_cast<common::V1_0::PolicyFlag>(POLICY_FLAG_INJECTED) ==
+            common::V1_0::PolicyFlag::INJECTED);
+    static_assert(static_cast<common::V1_0::PolicyFlag>(POLICY_FLAG_TRUSTED) ==
+            common::V1_0::PolicyFlag::TRUSTED);
+    static_assert(static_cast<common::V1_0::PolicyFlag>(POLICY_FLAG_FILTERED) ==
+            common::V1_0::PolicyFlag::FILTERED);
+    static_assert(static_cast<common::V1_0::PolicyFlag>(POLICY_FLAG_DISABLE_KEY_REPEAT) ==
+            common::V1_0::PolicyFlag::DISABLE_KEY_REPEAT);
+    static_assert(static_cast<common::V1_0::PolicyFlag>(POLICY_FLAG_INTERACTIVE) ==
+            common::V1_0::PolicyFlag::INTERACTIVE);
+    static_assert(static_cast<common::V1_0::PolicyFlag>(POLICY_FLAG_PASS_TO_USER) ==
+            common::V1_0::PolicyFlag::PASS_TO_USER);
+    return static_cast<hidl_bitfield<common::V1_0::PolicyFlag>>(flags);
+}
+
+static hidl_bitfield<common::V1_0::EdgeFlag> getEdgeFlags(int32_t flags) {
+    static_assert(static_cast<common::V1_0::EdgeFlag>(AMOTION_EVENT_EDGE_FLAG_NONE) ==
+            common::V1_0::EdgeFlag::NONE);
+    static_assert(static_cast<common::V1_0::EdgeFlag>(AMOTION_EVENT_EDGE_FLAG_TOP) ==
+            common::V1_0::EdgeFlag::TOP);
+    static_assert(static_cast<common::V1_0::EdgeFlag>(AMOTION_EVENT_EDGE_FLAG_BOTTOM) ==
+            common::V1_0::EdgeFlag::BOTTOM);
+    static_assert(static_cast<common::V1_0::EdgeFlag>(AMOTION_EVENT_EDGE_FLAG_LEFT) ==
+            common::V1_0::EdgeFlag::LEFT);
+    static_assert(static_cast<common::V1_0::EdgeFlag>(AMOTION_EVENT_EDGE_FLAG_RIGHT) ==
+            common::V1_0::EdgeFlag::RIGHT);
+    return static_cast<hidl_bitfield<common::V1_0::EdgeFlag>>(flags);
+}
+
+static hidl_bitfield<common::V1_0::Meta> getMetastate(int32_t state) {
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_NONE) ==
+            common::V1_0::Meta::NONE);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_ALT_ON) ==
+            common::V1_0::Meta::ALT_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_ALT_LEFT_ON) ==
+            common::V1_0::Meta::ALT_LEFT_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_ALT_RIGHT_ON) ==
+            common::V1_0::Meta::ALT_RIGHT_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_SHIFT_ON) ==
+            common::V1_0::Meta::SHIFT_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_SHIFT_LEFT_ON) ==
+            common::V1_0::Meta::SHIFT_LEFT_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_SHIFT_RIGHT_ON) ==
+            common::V1_0::Meta::SHIFT_RIGHT_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_SYM_ON) ==
+            common::V1_0::Meta::SYM_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_FUNCTION_ON) ==
+            common::V1_0::Meta::FUNCTION_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_CTRL_ON) ==
+            common::V1_0::Meta::CTRL_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_CTRL_LEFT_ON) ==
+            common::V1_0::Meta::CTRL_LEFT_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_CTRL_RIGHT_ON) ==
+            common::V1_0::Meta::CTRL_RIGHT_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_META_ON) ==
+            common::V1_0::Meta::META_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_META_LEFT_ON) ==
+            common::V1_0::Meta::META_LEFT_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_META_RIGHT_ON) ==
+            common::V1_0::Meta::META_RIGHT_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_CAPS_LOCK_ON) ==
+            common::V1_0::Meta::CAPS_LOCK_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_NUM_LOCK_ON) ==
+            common::V1_0::Meta::NUM_LOCK_ON);
+    static_assert(static_cast<common::V1_0::Meta>(AMETA_SCROLL_LOCK_ON) ==
+            common::V1_0::Meta::SCROLL_LOCK_ON);
+    return static_cast<hidl_bitfield<common::V1_0::Meta>>(state);
+}
+
+static hidl_bitfield<common::V1_0::Button> getButtonState(int32_t buttonState) {
+    // No need for static_assert here.
+    // The button values have already been asserted in getActionButton(..) above
+    return static_cast<hidl_bitfield<common::V1_0::Button>>(buttonState);
+}
+
+static common::V1_0::ToolType getToolType(int32_t toolType) {
+    static_assert(static_cast<common::V1_0::ToolType>(AMOTION_EVENT_TOOL_TYPE_UNKNOWN) ==
+            common::V1_0::ToolType::UNKNOWN);
+    static_assert(static_cast<common::V1_0::ToolType>(AMOTION_EVENT_TOOL_TYPE_FINGER) ==
+            common::V1_0::ToolType::FINGER);
+    static_assert(static_cast<common::V1_0::ToolType>(AMOTION_EVENT_TOOL_TYPE_STYLUS) ==
+            common::V1_0::ToolType::STYLUS);
+    static_assert(static_cast<common::V1_0::ToolType>(AMOTION_EVENT_TOOL_TYPE_MOUSE) ==
+            common::V1_0::ToolType::MOUSE);
+    static_assert(static_cast<common::V1_0::ToolType>(AMOTION_EVENT_TOOL_TYPE_ERASER) ==
+            common::V1_0::ToolType::ERASER);
+    return static_cast<common::V1_0::ToolType>(toolType);
+}
+
+static common::V1_0::Axis getAxis(uint64_t axis) {
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_X) ==
+            common::V1_0::Axis::X);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_Y) ==
+            common::V1_0::Axis::Y);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_PRESSURE) ==
+            common::V1_0::Axis::PRESSURE);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_SIZE) ==
+            common::V1_0::Axis::SIZE);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_TOUCH_MAJOR) ==
+            common::V1_0::Axis::TOUCH_MAJOR);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_TOUCH_MINOR) ==
+            common::V1_0::Axis::TOUCH_MINOR);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_TOOL_MAJOR) ==
+            common::V1_0::Axis::TOOL_MAJOR);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_TOOL_MINOR) ==
+            common::V1_0::Axis::TOOL_MINOR);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_ORIENTATION) ==
+            common::V1_0::Axis::ORIENTATION);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_VSCROLL) ==
+            common::V1_0::Axis::VSCROLL);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_HSCROLL) ==
+            common::V1_0::Axis::HSCROLL);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_Z) ==
+            common::V1_0::Axis::Z);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_RX) ==
+            common::V1_0::Axis::RX);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_RY) ==
+            common::V1_0::Axis::RY);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_RZ) ==
+            common::V1_0::Axis::RZ);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_HAT_X) ==
+            common::V1_0::Axis::HAT_X);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_HAT_Y) ==
+            common::V1_0::Axis::HAT_Y);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_LTRIGGER) ==
+            common::V1_0::Axis::LTRIGGER);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_RTRIGGER) ==
+            common::V1_0::Axis::RTRIGGER);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_THROTTLE) ==
+            common::V1_0::Axis::THROTTLE);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_RUDDER) ==
+            common::V1_0::Axis::RUDDER);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_WHEEL) ==
+            common::V1_0::Axis::WHEEL);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GAS) ==
+            common::V1_0::Axis::GAS);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_BRAKE) ==
+            common::V1_0::Axis::BRAKE);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_DISTANCE) ==
+            common::V1_0::Axis::DISTANCE);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_TILT) ==
+            common::V1_0::Axis::TILT);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_SCROLL) ==
+            common::V1_0::Axis::SCROLL);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_RELATIVE_X) ==
+            common::V1_0::Axis::RELATIVE_X);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_RELATIVE_Y) ==
+            common::V1_0::Axis::RELATIVE_Y);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_1) ==
+            common::V1_0::Axis::GENERIC_1);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_2) ==
+            common::V1_0::Axis::GENERIC_2);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_3) ==
+            common::V1_0::Axis::GENERIC_3);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_4) ==
+            common::V1_0::Axis::GENERIC_4);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_5) ==
+            common::V1_0::Axis::GENERIC_5);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_6) ==
+            common::V1_0::Axis::GENERIC_6);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_7) ==
+            common::V1_0::Axis::GENERIC_7);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_8) ==
+            common::V1_0::Axis::GENERIC_8);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_9) ==
+            common::V1_0::Axis::GENERIC_9);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_10) ==
+            common::V1_0::Axis::GENERIC_10);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_11) ==
+            common::V1_0::Axis::GENERIC_11);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_12) ==
+            common::V1_0::Axis::GENERIC_12);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_13) ==
+            common::V1_0::Axis::GENERIC_13);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_14) ==
+            common::V1_0::Axis::GENERIC_14);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_15) ==
+            common::V1_0::Axis::GENERIC_15);
+    static_assert(static_cast<common::V1_0::Axis>(AMOTION_EVENT_AXIS_GENERIC_16) ==
+            common::V1_0::Axis::GENERIC_16);
+    return static_cast<common::V1_0::Axis>(axis);
+}
+
+static common::V1_0::VideoFrame getHalVideoFrame(const TouchVideoFrame& frame) {
+    common::V1_0::VideoFrame out;
+    out.width = frame.getWidth();
+    out.height = frame.getHeight();
+    out.data = frame.getData();
+    struct timeval timestamp = frame.getTimestamp();
+    out.timestamp = seconds_to_nanoseconds(timestamp.tv_sec) +
+             microseconds_to_nanoseconds(timestamp.tv_usec);
+    return out;
+}
+
+static std::vector<common::V1_0::VideoFrame> convertVideoFrames(
+        const std::vector<TouchVideoFrame>& frames) {
+    std::vector<common::V1_0::VideoFrame> out;
+    for (const TouchVideoFrame& frame : frames) {
+        out.push_back(getHalVideoFrame(frame));
+    }
+    return out;
+}
+
+static uint8_t getActionIndex(int32_t action) {
+    return (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) >>
+            AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
+}
+
+static void getHidlPropertiesAndCoords(const NotifyMotionArgs& args,
+        std::vector<common::V1_0::PointerProperties>* outPointerProperties,
+        std::vector<common::V1_0::PointerCoords>* outPointerCoords) {
+    outPointerProperties->reserve(args.pointerCount);
+    outPointerCoords->reserve(args.pointerCount);
+    for (size_t i = 0; i < args.pointerCount; i++) {
+        common::V1_0::PointerProperties properties;
+        properties.id = args.pointerProperties[i].id;
+        properties.toolType = getToolType(args.pointerProperties[i].toolType);
+        outPointerProperties->push_back(properties);
+
+        common::V1_0::PointerCoords coords;
+        BitSet64 bits (args.pointerCoords[i].bits);
+        std::vector<float> values;
+        size_t index = 0;
+        while (!bits.isEmpty()) {
+            uint32_t axis = bits.clearFirstMarkedBit();
+            coords.bits |= 1 << static_cast<uint64_t>(getAxis(axis));
+            float value = args.pointerCoords[i].values[index++];
+            values.push_back(value);
+        }
+        coords.values = values;
+        outPointerCoords->push_back(coords);
+    }
+}
+
+static common::V1_0::MotionEvent getMotionEvent(const NotifyMotionArgs& args) {
+    common::V1_0::MotionEvent event;
+    event.deviceId = args.deviceId;
+    event.source = getSource(args.source);
+    event.displayId = args.displayId;
+    event.downTime = args.downTime;
+    event.eventTime = args.eventTime;
+    event.action = getAction(args.action & AMOTION_EVENT_ACTION_MASK);
+    event.actionIndex = getActionIndex(args.action);
+    event.actionButton = getActionButton(args.actionButton);
+    event.flags = getFlags(args.flags);
+    event.policyFlags = getPolicyFlags(args.policyFlags);
+    event.edgeFlags = getEdgeFlags(args.edgeFlags);
+    event.metaState = getMetastate(args.metaState);
+    event.buttonState = getButtonState(args.buttonState);
+    event.xPrecision = args.xPrecision;
+    event.yPrecision = args.yPrecision;
+
+    std::vector<common::V1_0::PointerProperties> pointerProperties;
+    std::vector<common::V1_0::PointerCoords> pointerCoords;
+    getHidlPropertiesAndCoords(args, /*out*/&pointerProperties, /*out*/&pointerCoords);
+    event.pointerProperties = pointerProperties;
+    event.pointerCoords = pointerCoords;
+
+    event.deviceTimestamp = args.deviceTimestamp;
+    event.frames = convertVideoFrames(args.videoFrames);
+
+    return event;
+}
+
+static MotionClassification getMotionClassification(common::V1_0::Classification classification) {
+    static_assert(MotionClassification::NONE ==
+            static_cast<MotionClassification>(common::V1_0::Classification::NONE));
+    static_assert(MotionClassification::AMBIGUOUS_GESTURE ==
+            static_cast<MotionClassification>(common::V1_0::Classification::AMBIGUOUS_GESTURE));
+    static_assert(MotionClassification::DEEP_PRESS ==
+            static_cast<MotionClassification>(common::V1_0::Classification::DEEP_PRESS));
+    return static_cast<MotionClassification>(classification);
+}
+
+static bool isTouchEvent(const NotifyMotionArgs& args) {
+    return args.source == AINPUT_SOURCE_TOUCHPAD || args.source == AINPUT_SOURCE_TOUCHSCREEN;
+}
+
+// Check if the "deep touch" feature is on.
+static bool deepPressEnabled() {
+    std::string flag_value = server_configurable_flags::GetServerConfigurableFlag(
+            INPUT_NATIVE_BOOT, DEEP_PRESS_ENABLED, "true");
+    std::transform(flag_value.begin(), flag_value.end(), flag_value.begin(), ::tolower);
+    if (flag_value == "1" || flag_value == "true") {
+        ALOGI("Deep press feature enabled.");
+        return true;
+    }
+    ALOGI("Deep press feature is not enabled.");
+    return false;
+}
+
+
+// --- ClassifierEvent ---
+
+ClassifierEvent::ClassifierEvent(std::unique_ptr<NotifyMotionArgs> args) :
+        type(ClassifierEventType::MOTION), args(std::move(args)) { };
+ClassifierEvent::ClassifierEvent(std::unique_ptr<NotifyDeviceResetArgs> args) :
+        type(ClassifierEventType::DEVICE_RESET), args(std::move(args)) { };
+ClassifierEvent::ClassifierEvent(ClassifierEventType type, std::unique_ptr<NotifyArgs> args) :
+        type(type), args(std::move(args)) { };
+
+ClassifierEvent::ClassifierEvent(ClassifierEvent&& other) :
+        type(other.type), args(std::move(other.args)) { };
+
+ClassifierEvent& ClassifierEvent::operator=(ClassifierEvent&& other) {
+    type = other.type;
+    args = std::move(other.args);
+    return *this;
+}
+
+ClassifierEvent ClassifierEvent::createHalResetEvent() {
+    return ClassifierEvent(ClassifierEventType::HAL_RESET, nullptr);
+}
+
+ClassifierEvent ClassifierEvent::createExitEvent() {
+    return ClassifierEvent(ClassifierEventType::EXIT, nullptr);
+}
+
+std::optional<int32_t> ClassifierEvent::getDeviceId() const {
+    switch (type) {
+        case ClassifierEventType::MOTION: {
+            NotifyMotionArgs* motionArgs = static_cast<NotifyMotionArgs*>(args.get());
+            return motionArgs->deviceId;
+        }
+        case ClassifierEventType::DEVICE_RESET: {
+            NotifyDeviceResetArgs* deviceResetArgs =
+                    static_cast<NotifyDeviceResetArgs*>(args.get());
+            return deviceResetArgs->deviceId;
+        }
+        case ClassifierEventType::HAL_RESET: {
+            return std::nullopt;
+        }
+        case ClassifierEventType::EXIT: {
+            return std::nullopt;
+        }
+    }
+}
+
+// --- MotionClassifier ---
+
+MotionClassifier::MotionClassifier(
+        sp<android::hardware::input::classifier::V1_0::IInputClassifier> service) :
+        mEvents(MAX_EVENTS), mService(service) {
+    mHalThread = std::thread(&MotionClassifier::callInputClassifierHal, this);
+#if defined(__linux__)
+    // Set the thread name for debugging
+    pthread_setname_np(mHalThread.native_handle(), "InputClassifier");
+#endif
+}
+
+MotionClassifier::~MotionClassifier() {
+    requestExit();
+    mHalThread.join();
+}
+
+void MotionClassifier::ensureHalThread(const char* function) {
+    if (DEBUG) {
+        if (std::this_thread::get_id() != mHalThread.get_id()) {
+            ALOGE("Function %s should only be called from InputClassifier thread", function);
+        }
+    }
+}
+
+/**
+ * Obtain the classification from the HAL for a given MotionEvent.
+ * Should only be called from the InputClassifier thread (mHalThread).
+ * Should not be called from the thread that notifyMotion runs on.
+ *
+ * There is no way to provide a timeout for a HAL call. So if the HAL takes too long
+ * to return a classification, this would directly impact the touch latency.
+ * To remove any possibility of negatively affecting the touch latency, the HAL
+ * is called from a dedicated thread.
+ */
+void MotionClassifier::callInputClassifierHal() {
+    ensureHalThread(__func__);
+    while (true) {
+        ClassifierEvent event = mEvents.pop();
+        switch (event.type) {
+            case ClassifierEventType::MOTION: {
+                NotifyMotionArgs* motionArgs = static_cast<NotifyMotionArgs*>(event.args.get());
+                common::V1_0::MotionEvent motionEvent = getMotionEvent(*motionArgs);
+                common::V1_0::Classification halClassification = mService->classify(motionEvent);
+                updateClassification(motionArgs->deviceId, motionArgs->eventTime,
+                        getMotionClassification(halClassification));
+                break;
+            }
+            case ClassifierEventType::DEVICE_RESET: {
+                const int32_t deviceId = *(event.getDeviceId());
+                mService->resetDevice(deviceId);
+                setClassification(deviceId, MotionClassification::NONE);
+                break;
+            }
+            case ClassifierEventType::HAL_RESET: {
+                mService->reset();
+                clearClassifications();
+                break;
+            }
+            case ClassifierEventType::EXIT: {
+                clearClassifications();
+                return;
+            }
+        }
+    }
+}
+
+void MotionClassifier::requestExit() {
+    reset();
+    mEvents.push(ClassifierEvent::createExitEvent());
+}
+
+void MotionClassifier::updateClassification(int32_t deviceId, nsecs_t eventTime,
+        MotionClassification classification) {
+    std::scoped_lock lock(mLock);
+    const nsecs_t lastDownTime = getValueForKey(mLastDownTimes, deviceId, static_cast<nsecs_t>(0));
+    if (eventTime < lastDownTime) {
+        // HAL just finished processing an event that belonged to an earlier gesture,
+        // but new gesture is already in progress. Drop this classification.
+        ALOGW("Received late classification. Late by at least %" PRId64 " ms.",
+                nanoseconds_to_milliseconds(lastDownTime - eventTime));
+        return;
+    }
+    mClassifications[deviceId] = classification;
+}
+
+void MotionClassifier::setClassification(int32_t deviceId, MotionClassification classification) {
+    std::scoped_lock lock(mLock);
+    mClassifications[deviceId] = classification;
+}
+
+void MotionClassifier::clearClassifications() {
+    std::scoped_lock lock(mLock);
+    mClassifications.clear();
+}
+
+MotionClassification MotionClassifier::getClassification(int32_t deviceId) {
+    std::scoped_lock lock(mLock);
+    return getValueForKey(mClassifications, deviceId, MotionClassification::NONE);
+}
+
+void MotionClassifier::updateLastDownTime(int32_t deviceId, nsecs_t downTime) {
+    std::scoped_lock lock(mLock);
+    mLastDownTimes[deviceId] = downTime;
+    mClassifications[deviceId] = MotionClassification::NONE;
+}
+
+MotionClassification MotionClassifier::classify(const NotifyMotionArgs& args) {
+    if (!mService) {
+        // If HAL is not present, do nothing
+        return MotionClassification::NONE;
+    }
+    if ((args.action & AMOTION_EVENT_ACTION_MASK) == AMOTION_EVENT_ACTION_DOWN) {
+        updateLastDownTime(args.deviceId, args.downTime);
+    }
+
+    ClassifierEvent event(std::make_unique<NotifyMotionArgs>(args));
+    bool elementAdded = mEvents.push(std::move(event));
+    if (!elementAdded) {
+        // Queue should not ever overfill. Suspect HAL is slow.
+        ALOGE("Dropped element with eventTime %" PRIu64, args.eventTime);
+        reset();
+        return MotionClassification::NONE;
+    }
+    return getClassification(args.deviceId);
+}
+
+void MotionClassifier::reset() {
+    mEvents.clear();
+    mEvents.push(ClassifierEvent::createHalResetEvent());
+}
+
+/**
+ * Per-device reset. Clear the outstanding events that are going to be sent to HAL.
+ * Request InputClassifier thread to call resetDevice for this particular device.
+ */
+void MotionClassifier::reset(const NotifyDeviceResetArgs& args) {
+    int32_t deviceId = args.deviceId;
+    // Clear the pending events right away, to avoid unnecessary work done by the HAL.
+    mEvents.erase([deviceId](const ClassifierEvent& event) {
+            std::optional<int32_t> eventDeviceId = event.getDeviceId();
+            return eventDeviceId && (*eventDeviceId == deviceId);
+    });
+    mEvents.push(std::make_unique<NotifyDeviceResetArgs>(args));
+}
+
+// --- InputClassifier ---
+
+InputClassifier::InputClassifier(const sp<InputListenerInterface>& listener) :
+        mListener(listener) {
+    if (deepPressEnabled()) {
+        sp<android::hardware::input::classifier::V1_0::IInputClassifier> service =
+                classifier::V1_0::IInputClassifier::getService();
+        if (service) {
+            mMotionClassifier = std::make_unique<MotionClassifier>(service);
+        } else {
+            ALOGI("Could not obtain InputClassifier HAL");
+        }
+    }
+};
+
+void InputClassifier::notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) {
+    // pass through
+    mListener->notifyConfigurationChanged(args);
+}
+
+void InputClassifier::notifyKey(const NotifyKeyArgs* args) {
+    // pass through
+    mListener->notifyKey(args);
+}
+
+void InputClassifier::notifyMotion(const NotifyMotionArgs* args) {
+    if (mMotionClassifier && isTouchEvent(*args)) {
+        // We only cover touch events, for now.
+        NotifyMotionArgs newArgs = NotifyMotionArgs(*args);
+        newArgs.classification = mMotionClassifier->classify(newArgs);
+        args = &newArgs;
+    }
+    mListener->notifyMotion(args);
+}
+
+void InputClassifier::notifySwitch(const NotifySwitchArgs* args) {
+    // pass through
+    mListener->notifySwitch(args);
+}
+
+void InputClassifier::notifyDeviceReset(const NotifyDeviceResetArgs* args) {
+    if (mMotionClassifier) {
+        mMotionClassifier->reset(*args);
+    }
+    // continue to next stage
+    mListener->notifyDeviceReset(args);
+}
+
+} // namespace android
\ No newline at end of file
diff --git a/services/inputflinger/InputClassifier.h b/services/inputflinger/InputClassifier.h
new file mode 100644
index 0000000..8133623
--- /dev/null
+++ b/services/inputflinger/InputClassifier.h
@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _UI_INPUT_CLASSIFIER_H
+#define _UI_INPUT_CLASSIFIER_H
+
+#include <utils/RefBase.h>
+#include <unordered_map>
+#include <thread>
+
+#include "BlockingQueue.h"
+#include "InputListener.h"
+#include <android/hardware/input/classifier/1.0/IInputClassifier.h>
+
+namespace android {
+
+enum class ClassifierEventType : uint8_t {
+    MOTION = 0,
+    DEVICE_RESET = 1,
+    HAL_RESET = 2,
+    EXIT = 3,
+};
+
+struct ClassifierEvent {
+    ClassifierEventType type;
+    std::unique_ptr<NotifyArgs> args;
+
+    ClassifierEvent(ClassifierEventType type, std::unique_ptr<NotifyArgs> args);
+    ClassifierEvent(std::unique_ptr<NotifyMotionArgs> args);
+    ClassifierEvent(std::unique_ptr<NotifyDeviceResetArgs> args);
+    ClassifierEvent(ClassifierEvent&& other);
+    ClassifierEvent& operator=(ClassifierEvent&& other);
+
+    // Convenience function to create a HAL_RESET event
+    static ClassifierEvent createHalResetEvent();
+    // Convenience function to create an EXIT event
+    static ClassifierEvent createExitEvent();
+
+    std::optional<int32_t> getDeviceId() const;
+};
+
+// --- Interfaces ---
+
+/**
+ * Interface for adding a MotionClassification to NotifyMotionArgs.
+ *
+ * To implement, override the classify function.
+ */
+class MotionClassifierInterface {
+public:
+    MotionClassifierInterface() { }
+    virtual ~MotionClassifierInterface() { }
+    /**
+     * Based on the motion event described by NotifyMotionArgs,
+     * provide a MotionClassification for the current gesture.
+     */
+    virtual MotionClassification classify(const NotifyMotionArgs& args) = 0;
+    virtual void reset() = 0;
+    virtual void reset(const NotifyDeviceResetArgs& args) = 0;
+};
+
+/**
+ * Base interface for an InputListener stage.
+ * Provides classification to events.
+ */
+class InputClassifierInterface : public virtual RefBase, public InputListenerInterface {
+protected:
+    InputClassifierInterface() { }
+    virtual ~InputClassifierInterface() { }
+};
+
+// --- Implementations ---
+
+/**
+ * Implementation of MotionClassifierInterface that calls the InputClassifier HAL
+ * in order to determine the classification for the current gesture.
+ *
+ * The InputClassifier HAL may keep track of the entire gesture in order to determine
+ * the classification, and may be hardware-specific. It may use the data in
+ * NotifyMotionArgs::videoFrames field to drive the classification decisions.
+ * The HAL is called from a separate thread.
+ */
+class MotionClassifier : public MotionClassifierInterface {
+public:
+    MotionClassifier(sp<android::hardware::input::classifier::V1_0::IInputClassifier> service);
+    ~MotionClassifier();
+    /**
+     * Classifies events asynchronously; that is, it doesn't block events on a classification,
+     * but instead sends them over to the classifier HAL
+     * and after a classification is determined,
+     * it then marks the next event it sees in the stream with it.
+     *
+     * Therefore, it is acceptable to have the classifications be delayed by 1-2 events
+     * in a particular gesture.
+     */
+    virtual MotionClassification classify(const NotifyMotionArgs& args) override;
+    virtual void reset() override;
+    virtual void reset(const NotifyDeviceResetArgs& args) override;
+
+private:
+    // The events that need to be sent to the HAL.
+    BlockingQueue<ClassifierEvent> mEvents;
+    /**
+     * Thread that will communicate with InputClassifier HAL.
+     * This should be the only thread that communicates with InputClassifier HAL,
+     * because this thread is allowed to block on the HAL calls.
+     */
+    std::thread mHalThread;
+    /**
+     * Print an error message if the caller is not on the InputClassifier thread.
+     * Caller must supply the name of the calling function as __function__
+     */
+    void ensureHalThread(const char* function);
+    /**
+     * Call the InputClassifier HAL
+     */
+    void callInputClassifierHal();
+    /**
+     * Access to the InputClassifier HAL
+     */
+    sp<android::hardware::input::classifier::V1_0::IInputClassifier> mService;
+    std::mutex mLock;
+    /**
+     * Per-device input classifications. Should only be accessed using the
+     * getClassification / setClassification methods.
+     */
+    std::unordered_map<int32_t /*deviceId*/, MotionClassification>
+            mClassifications; //GUARDED_BY(mLock);
+    /**
+     * Set the current classification for a given device.
+     */
+    void setClassification(int32_t deviceId, MotionClassification classification);
+    /**
+     * Get the current classification for a given device.
+     */
+    MotionClassification getClassification(int32_t deviceId);
+    void updateClassification(int32_t deviceId, nsecs_t eventTime,
+        MotionClassification classification);
+    /**
+     * Clear all current classifications
+     */
+    void clearClassifications();
+    /**
+     * Per-device times when the last ACTION_DOWN was received.
+     * Used to reject late classifications that do not belong to the current gesture.
+     *
+     * Accessed indirectly by both InputClassifier thread and the thread that receives notifyMotion.
+     */
+    std::unordered_map<int32_t /*deviceId*/, nsecs_t /*downTime*/>
+            mLastDownTimes; //GUARDED_BY(mLock);
+    void updateLastDownTime(int32_t deviceId, nsecs_t downTime);
+    // Should only be accessed through isResetNeeded() and setResetNeeded()
+    bool mResetNeeded = false; //GUARDED_BY(mLock);
+    /**
+     * Check whether reset should be performed. Reset should be performed
+     * if the eventTime of the current event is older than mLastDownTime,
+     * i.e. a new gesture has already begun, but an older gesture is still being processed.
+     */
+    bool isResetNeeded(nsecs_t eventTime);
+    void setResetNeeded(bool isNeeded);
+
+    /**
+     * Exit the InputClassifier HAL thread.
+     * Useful for tests to ensure proper cleanup.
+     */
+    void requestExit();
+};
+
+/**
+ * Implementation of the InputClassifierInterface.
+ * Represents a separate stage of input processing. All of the input events go through this stage.
+ * Acts as a passthrough for all input events except for motion events.
+ * The events of motion type are sent to MotionClassifier.
+ */
+class InputClassifier : public InputClassifierInterface {
+public:
+    explicit InputClassifier(const sp<InputListenerInterface>& listener);
+    virtual void notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args);
+    virtual void notifyKey(const NotifyKeyArgs* args);
+    virtual void notifyMotion(const NotifyMotionArgs* args);
+    virtual void notifySwitch(const NotifySwitchArgs* args);
+    virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args);
+
+private:
+    std::unique_ptr<MotionClassifierInterface> mMotionClassifier = nullptr;
+    // The next stage to pass input events to
+    sp<InputListenerInterface> mListener;
+};
+
+} // namespace android
+#endif
\ No newline at end of file
diff --git a/services/inputflinger/InputListener.cpp b/services/inputflinger/InputListener.cpp
index b349c73..e537e09 100644
--- a/services/inputflinger/InputListener.cpp
+++ b/services/inputflinger/InputListener.cpp
@@ -36,6 +36,10 @@
         NotifyArgs(other.sequenceNum), eventTime(other.eventTime) {
 }
 
+bool NotifyConfigurationChangedArgs::operator==(const NotifyConfigurationChangedArgs& rhs) const {
+    return sequenceNum == rhs.sequenceNum && eventTime == rhs.eventTime;
+}
+
 void NotifyConfigurationChangedArgs::notify(const sp<InputListenerInterface>& listener) const {
     listener->notifyConfigurationChanged(this);
 }
@@ -61,6 +65,21 @@
         metaState(other.metaState), downTime(other.downTime) {
 }
 
+bool NotifyKeyArgs::operator==(const NotifyKeyArgs& rhs) const {
+    return sequenceNum == rhs.sequenceNum
+            && eventTime == rhs.eventTime
+            && deviceId == rhs.deviceId
+            && source == rhs.source
+            && displayId == rhs.displayId
+            && policyFlags == rhs.policyFlags
+            && action == rhs.action
+            && flags == rhs.flags
+            && keyCode == rhs.keyCode
+            && scanCode == rhs.scanCode
+            && metaState == rhs.metaState
+            && downTime == rhs.downTime;
+}
+
 void NotifyKeyArgs::notify(const sp<InputListenerInterface>& listener) const {
     listener->notifyKey(this);
 }
@@ -105,6 +124,43 @@
     }
 }
 
+bool NotifyMotionArgs::operator==(const NotifyMotionArgs& rhs) const {
+    bool equal =
+            sequenceNum == rhs.sequenceNum
+            && eventTime == rhs.eventTime
+            && deviceId == rhs.deviceId
+            && source == rhs.source
+            && displayId == rhs.displayId
+            && policyFlags == rhs.policyFlags
+            && action == rhs.action
+            && actionButton == rhs.actionButton
+            && flags == rhs.flags
+            && metaState == rhs.metaState
+            && buttonState == rhs.buttonState
+            && classification == rhs.classification
+            && edgeFlags == rhs.edgeFlags
+            && deviceTimestamp == rhs.deviceTimestamp
+            && pointerCount == rhs.pointerCount
+            // PointerProperties and PointerCoords are compared separately below
+            && xPrecision == rhs.xPrecision
+            && yPrecision == rhs.yPrecision
+            && downTime == rhs.downTime
+            && videoFrames == rhs.videoFrames;
+    if (!equal) {
+        return false;
+    }
+
+    for (size_t i = 0; i < pointerCount; i++) {
+        equal =
+                pointerProperties[i] == rhs.pointerProperties[i]
+                && pointerCoords[i] == rhs.pointerCoords[i];
+        if (!equal) {
+            return false;
+        }
+    }
+    return true;
+}
+
 void NotifyMotionArgs::notify(const sp<InputListenerInterface>& listener) const {
     listener->notifyMotion(this);
 }
@@ -123,6 +179,14 @@
         switchValues(other.switchValues), switchMask(other.switchMask) {
 }
 
+bool NotifySwitchArgs::operator==(const NotifySwitchArgs rhs) const {
+    return sequenceNum == rhs.sequenceNum
+            && eventTime == rhs.eventTime
+            && policyFlags == rhs.policyFlags
+            && switchValues == rhs.switchValues
+            && switchMask == rhs.switchMask;
+}
+
 void NotifySwitchArgs::notify(const sp<InputListenerInterface>& listener) const {
     listener->notifySwitch(this);
 }
@@ -139,6 +203,12 @@
         NotifyArgs(other.sequenceNum), eventTime(other.eventTime), deviceId(other.deviceId) {
 }
 
+bool NotifyDeviceResetArgs::operator==(const NotifyDeviceResetArgs& rhs) const {
+    return sequenceNum == rhs.sequenceNum
+            && eventTime == rhs.eventTime
+            && deviceId == rhs.deviceId;
+}
+
 void NotifyDeviceResetArgs::notify(const sp<InputListenerInterface>& listener) const {
     listener->notifyDeviceReset(this);
 }
diff --git a/services/inputflinger/InputManager.cpp b/services/inputflinger/InputManager.cpp
index 1d7ea00..b3b9e3e 100644
--- a/services/inputflinger/InputManager.cpp
+++ b/services/inputflinger/InputManager.cpp
@@ -34,7 +34,8 @@
         const sp<InputReaderPolicyInterface>& readerPolicy,
         const sp<InputDispatcherPolicyInterface>& dispatcherPolicy) {
     mDispatcher = new InputDispatcher(dispatcherPolicy);
-    mReader = createInputReader(readerPolicy, mDispatcher);
+    mClassifier = new InputClassifier(mDispatcher);
+    mReader = createInputReader(readerPolicy, mClassifier);
     initialize();
 }
 
diff --git a/services/inputflinger/InputManager.h b/services/inputflinger/InputManager.h
index ab309b1..142ec0c 100644
--- a/services/inputflinger/InputManager.h
+++ b/services/inputflinger/InputManager.h
@@ -23,7 +23,9 @@
 
 #include "EventHub.h"
 #include "InputReaderBase.h"
+#include "InputClassifier.h"
 #include "InputDispatcher.h"
+#include "InputReader.h"
 
 #include <input/Input.h>
 #include <input/InputTransport.h>
@@ -100,6 +102,8 @@
     sp<InputReaderInterface> mReader;
     sp<InputReaderThread> mReaderThread;
 
+    sp<InputClassifierInterface> mClassifier;
+
     sp<InputDispatcherInterface> mDispatcher;
     sp<InputDispatcherThread> mDispatcherThread;
 
diff --git a/services/inputflinger/include/InputListener.h b/services/inputflinger/include/InputListener.h
index 53247a0..13ae7dd 100644
--- a/services/inputflinger/include/InputListener.h
+++ b/services/inputflinger/include/InputListener.h
@@ -49,6 +49,8 @@
 
     inline NotifyConfigurationChangedArgs() { }
 
+    bool operator==(const NotifyConfigurationChangedArgs& rhs) const;
+
     NotifyConfigurationChangedArgs(uint32_t sequenceNum, nsecs_t eventTime);
 
     NotifyConfigurationChangedArgs(const NotifyConfigurationChangedArgs& other);
@@ -79,6 +81,8 @@
             int32_t displayId, uint32_t policyFlags, int32_t action, int32_t flags, int32_t keyCode,
             int32_t scanCode, int32_t metaState, nsecs_t downTime);
 
+    bool operator==(const NotifyKeyArgs& rhs) const;
+
     NotifyKeyArgs(const NotifyKeyArgs& other);
 
     virtual ~NotifyKeyArgs() { }
@@ -134,6 +138,8 @@
 
     virtual ~NotifyMotionArgs() { }
 
+    bool operator==(const NotifyMotionArgs& rhs) const;
+
     virtual void notify(const sp<InputListenerInterface>& listener) const;
 };
 
@@ -152,6 +158,8 @@
 
     NotifySwitchArgs(const NotifySwitchArgs& other);
 
+    bool operator==(const NotifySwitchArgs rhs) const;
+
     virtual ~NotifySwitchArgs() { }
 
     virtual void notify(const sp<InputListenerInterface>& listener) const;
@@ -170,6 +178,8 @@
 
     NotifyDeviceResetArgs(const NotifyDeviceResetArgs& other);
 
+    bool operator==(const NotifyDeviceResetArgs& rhs) const;
+
     virtual ~NotifyDeviceResetArgs() { }
 
     virtual void notify(const sp<InputListenerInterface>& listener) const;
diff --git a/services/inputflinger/tests/Android.bp b/services/inputflinger/tests/Android.bp
index 5b275fb..1835449 100644
--- a/services/inputflinger/tests/Android.bp
+++ b/services/inputflinger/tests/Android.bp
@@ -3,8 +3,11 @@
 cc_test {
     name: "inputflinger_tests",
     srcs: [
-        "InputReader_test.cpp",
+        "BlockingQueue_test.cpp",
+        "TestInputListener.cpp",
+        "InputClassifier_test.cpp",
         "InputDispatcher_test.cpp",
+        "InputReader_test.cpp",
     ],
     cflags: [
         "-Wall",
@@ -13,6 +16,7 @@
         "-Wno-unused-parameter",
     ],
     shared_libs: [
+        "android.hardware.input.classifier@1.0",
         "libbase",
         "libbinder",
         "libcutils",
diff --git a/services/inputflinger/tests/BlockingQueue_test.cpp b/services/inputflinger/tests/BlockingQueue_test.cpp
new file mode 100644
index 0000000..0dea8d7
--- /dev/null
+++ b/services/inputflinger/tests/BlockingQueue_test.cpp
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "../BlockingQueue.h"
+
+
+#include <gtest/gtest.h>
+#include <thread>
+
+namespace android {
+
+
+// --- BlockingQueueTest ---
+
+/**
+ * Sanity check of basic pop and push operation.
+ */
+TEST(BlockingQueueTest, Queue_AddAndRemove) {
+    constexpr size_t capacity = 10;
+    BlockingQueue<int> queue(capacity);
+
+    ASSERT_TRUE(queue.push(1));
+    ASSERT_EQ(queue.pop(), 1);
+}
+
+/**
+ * Make sure the queue has strict capacity limits.
+ */
+TEST(BlockingQueueTest, Queue_ReachesCapacity) {
+    constexpr size_t capacity = 3;
+    BlockingQueue<int> queue(capacity);
+
+    // First 3 elements should be added successfully
+    ASSERT_TRUE(queue.push(1));
+    ASSERT_TRUE(queue.push(2));
+    ASSERT_TRUE(queue.push(3));
+    ASSERT_FALSE(queue.push(4)) << "Queue should reach capacity at size " << capacity;
+}
+
+/**
+ * Make sure the queue maintains FIFO order.
+ * Add elements and remove them, and check the order.
+ */
+TEST(BlockingQueueTest, Queue_isFIFO) {
+    constexpr size_t capacity = 10;
+    BlockingQueue<int> queue(capacity);
+
+    for (size_t i = 0; i < capacity; i++) {
+        ASSERT_TRUE(queue.push(static_cast<int>(i)));
+    }
+    for (size_t i = 0; i < capacity; i++) {
+        ASSERT_EQ(queue.pop(), static_cast<int>(i));
+    }
+}
+
+TEST(BlockingQueueTest, Queue_Clears) {
+    constexpr size_t capacity = 2;
+    BlockingQueue<int> queue(capacity);
+
+    queue.push(1);
+    queue.push(2);
+    queue.clear();
+    queue.push(3);
+    // Should no longer receive elements 1 and 2
+    ASSERT_EQ(3, queue.pop());
+}
+
+TEST(BlockingQueueTest, Queue_Erases) {
+    constexpr size_t capacity = 4;
+    BlockingQueue<int> queue(capacity);
+
+    queue.push(1);
+    queue.push(2);
+    queue.push(3);
+    queue.push(4);
+    // Erase elements 2 and 4
+    queue.erase([](int element) { return element == 2 || element == 4; });
+    // Should no longer receive elements 2 and 4
+    ASSERT_EQ(1, queue.pop());
+    ASSERT_EQ(3, queue.pop());
+}
+
+// --- BlockingQueueTest - Multiple threads ---
+
+TEST(BlockingQueueTest, Queue_AllowsMultipleThreads) {
+    constexpr size_t capacity = 100; // large capacity to increase likelihood that threads overlap
+    BlockingQueue<int> queue(capacity);
+
+    // Fill queue from a different thread
+    std::thread fillQueue([&queue](){
+        for (size_t i = 0; i < capacity; i++) {
+            ASSERT_TRUE(queue.push(static_cast<int>(i)));
+        }
+    });
+
+    // Make sure all elements are received in correct order
+    for (size_t i = 0; i < capacity; i++) {
+        ASSERT_EQ(queue.pop(), static_cast<int>(i));
+    }
+
+    fillQueue.join();
+}
+
+/**
+ * When the queue has no elements, and pop is called, it should block
+ * the current thread until an element is added to the queue (from another thread).
+ * Here we create a separate thread and call pop on an empty queue. Next,
+ * we check that the thread is blocked.
+ */
+TEST(BlockingQueueTest, Queue_BlocksWhileWaitingForElements) {
+    constexpr size_t capacity = 1;
+    BlockingQueue<int> queue(capacity);
+
+    std::atomic_bool hasReceivedElement = false;
+
+    // fill queue from a different thread
+    std::thread waitUntilHasElements([&queue, &hasReceivedElement](){
+        queue.pop(); // This should block until an element has been added
+        hasReceivedElement = true;
+    });
+
+    ASSERT_FALSE(hasReceivedElement);
+    queue.push(1);
+    waitUntilHasElements.join();
+    ASSERT_TRUE(hasReceivedElement);
+}
+
+
+} // namespace android
diff --git a/services/inputflinger/tests/InputClassifier_test.cpp b/services/inputflinger/tests/InputClassifier_test.cpp
new file mode 100644
index 0000000..20699c9
--- /dev/null
+++ b/services/inputflinger/tests/InputClassifier_test.cpp
@@ -0,0 +1,233 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "../InputClassifier.h"
+#include <gtest/gtest.h>
+
+#include "TestInputListener.h"
+
+#include <android/hardware/input/classifier/1.0/IInputClassifier.h>
+
+using namespace android::hardware::input;
+
+namespace android {
+
+// --- InputClassifierTest ---
+
+static NotifyMotionArgs generateBasicMotionArgs() {
+    // Create a basic motion event for testing
+    constexpr size_t pointerCount = 1;
+    PointerProperties properties[pointerCount];
+    properties[0].id = 0;
+    properties[0].toolType = AMOTION_EVENT_TOOL_TYPE_FINGER;
+
+    PointerCoords coords[pointerCount];
+    coords[0].setAxisValue(AMOTION_EVENT_AXIS_X, 1);
+    coords[0].setAxisValue(AMOTION_EVENT_AXIS_Y, 1);
+    static constexpr nsecs_t downTime = 2;
+    NotifyMotionArgs motionArgs(1/*sequenceNum*/, downTime/*eventTime*/, 3/*deviceId*/,
+            AINPUT_SOURCE_ANY, ADISPLAY_ID_DEFAULT, 4/*policyFlags*/, AMOTION_EVENT_ACTION_DOWN,
+            0/*actionButton*/, 0/*flags*/, AMETA_NONE, 0/*buttonState*/, MotionClassification::NONE,
+            AMOTION_EVENT_EDGE_FLAG_NONE, 5/*deviceTimestamp*/,
+            0/*pointerCount*/, properties, coords, 0/*xPrecision*/, 0/*yPrecision*/,
+            downTime, {}/*videoFrames*/);
+    return motionArgs;
+}
+
+class InputClassifierTest : public testing::Test {
+protected:
+    sp<InputClassifierInterface> mClassifier;
+    sp<TestInputListener> mTestListener;
+
+    virtual void SetUp() override {
+        mTestListener = new TestInputListener();
+        mClassifier = new InputClassifier(mTestListener);
+    }
+
+    virtual void TearDown() override {
+        mClassifier.clear();
+        mTestListener.clear();
+    }
+};
+
+/**
+ * Create a basic configuration change and send it to input classifier.
+ * Expect that the event is received by the next input stage, unmodified.
+ */
+TEST_F(InputClassifierTest, SendToNextStage_NotifyConfigurationChangedArgs) {
+    // Create a basic configuration change and send to classifier
+    NotifyConfigurationChangedArgs args(1/*sequenceNum*/, 2/*eventTime*/);
+
+    mClassifier->notifyConfigurationChanged(&args);
+    NotifyConfigurationChangedArgs outArgs;
+    ASSERT_NO_FATAL_FAILURE(mTestListener->assertNotifyConfigurationChangedWasCalled(&outArgs));
+    ASSERT_EQ(args, outArgs);
+}
+
+TEST_F(InputClassifierTest, SendToNextStage_NotifyKeyArgs) {
+    // Create a basic key event and send to classifier
+    NotifyKeyArgs args(1/*sequenceNum*/, 2/*eventTime*/, 3/*deviceId*/, AINPUT_SOURCE_KEYBOARD,
+            ADISPLAY_ID_DEFAULT, 0/*policyFlags*/, AKEY_EVENT_ACTION_DOWN, 4/*flags*/,
+            AKEYCODE_HOME, 5/*scanCode*/, AMETA_NONE, 6/*downTime*/);
+
+    mClassifier->notifyKey(&args);
+    NotifyKeyArgs outArgs;
+    ASSERT_NO_FATAL_FAILURE(mTestListener->assertNotifyKeyWasCalled(&outArgs));
+    ASSERT_EQ(args, outArgs);
+}
+
+
+/**
+ * Create a basic motion event and send it to input classifier.
+ * Expect that the event is received by the next input stage, unmodified.
+ */
+TEST_F(InputClassifierTest, SendToNextStage_NotifyMotionArgs) {
+    NotifyMotionArgs motionArgs = generateBasicMotionArgs();
+    mClassifier->notifyMotion(&motionArgs);
+    NotifyMotionArgs args;
+    ASSERT_NO_FATAL_FAILURE(mTestListener->assertNotifyMotionWasCalled(&args));
+    ASSERT_EQ(motionArgs, args);
+}
+
+/**
+ * Create a basic switch event and send it to input classifier.
+ * Expect that the event is received by the next input stage, unmodified.
+ */
+TEST_F(InputClassifierTest, SendToNextStage_NotifySwitchArgs) {
+    NotifySwitchArgs args(1/*sequenceNum*/, 2/*eventTime*/, 3/*policyFlags*/, 4/*switchValues*/,
+            5/*switchMask*/);
+
+    mClassifier->notifySwitch(&args);
+    NotifySwitchArgs outArgs;
+    ASSERT_NO_FATAL_FAILURE(mTestListener->assertNotifySwitchWasCalled(&outArgs));
+    ASSERT_EQ(args, outArgs);
+}
+
+/**
+ * Create a basic device reset event and send it to input classifier.
+ * Expect that the event is received by the next input stage, unmodified.
+ */
+TEST_F(InputClassifierTest, SendToNextStage_NotifyDeviceResetArgs) {
+    NotifyDeviceResetArgs args(1/*sequenceNum*/, 2/*eventTime*/, 3/*deviceId*/);
+
+    mClassifier->notifyDeviceReset(&args);
+    NotifyDeviceResetArgs outArgs;
+    ASSERT_NO_FATAL_FAILURE(mTestListener->assertNotifyDeviceResetWasCalled(&outArgs));
+    ASSERT_EQ(args, outArgs);
+}
+
+// --- MotionClassifierTest ---
+
+class MotionClassifierTest : public testing::Test {
+protected:
+    std::unique_ptr<MotionClassifierInterface> mMotionClassifier;
+
+    virtual void SetUp() override {
+        sp<android::hardware::input::classifier::V1_0::IInputClassifier> service =
+                classifier::V1_0::IInputClassifier::getService();
+        if (service) {
+            mMotionClassifier = std::make_unique<MotionClassifier>(service);
+        }
+    }
+};
+
+/**
+ * Since MotionClassifier creates a new thread to communicate with HAL,
+ * it's not really expected to ever exit. However, for testing purposes,
+ * we need to ensure that it is able to exit cleanly.
+ * If the thread is not properly cleaned up, it will generate SIGABRT.
+ * The logic for exiting the thread and cleaning up the resources is inside
+ * the destructor. Here, we just make sure the destructor does not crash.
+ */
+TEST_F(MotionClassifierTest, Destructor_DoesNotCrash) {
+    mMotionClassifier = nullptr;
+}
+
+/**
+ * Make sure MotionClassifier can handle events that don't have any
+ * video frames.
+ */
+TEST_F(MotionClassifierTest, Classify_NoVideoFrames) {
+    NotifyMotionArgs motionArgs = generateBasicMotionArgs();
+
+    // We are not checking the return value, because we can't be making assumptions
+    // about the HAL operation, since it will be highly hardware-dependent
+    if (mMotionClassifier) {
+        ASSERT_NO_FATAL_FAILURE(mMotionClassifier->classify(motionArgs));
+    }
+}
+
+/**
+ * Make sure nothing crashes when a videoFrame is sent.
+ */
+TEST_F(MotionClassifierTest, Classify_OneVideoFrame) {
+    NotifyMotionArgs motionArgs = generateBasicMotionArgs();
+
+    std::vector<int16_t> videoData = {1, 2, 3, 4};
+    timeval timestamp = { 1, 1};
+    TouchVideoFrame frame(2, 2, std::move(videoData), timestamp);
+    motionArgs.videoFrames = {frame};
+
+    // We are not checking the return value, because we can't be making assumptions
+    // about the HAL operation, since it will be highly hardware-dependent
+    if (mMotionClassifier) {
+        ASSERT_NO_FATAL_FAILURE(mMotionClassifier->classify(motionArgs));
+    }
+}
+
+/**
+ * Make sure nothing crashes when 2 videoFrames are sent.
+ */
+TEST_F(MotionClassifierTest, Classify_TwoVideoFrames) {
+    NotifyMotionArgs motionArgs = generateBasicMotionArgs();
+
+    std::vector<int16_t> videoData1 = {1, 2, 3, 4};
+    timeval timestamp1 = { 1, 1};
+    TouchVideoFrame frame1(2, 2, std::move(videoData1), timestamp1);
+
+    std::vector<int16_t> videoData2 = {6, 6, 6, 6};
+    timeval timestamp2 = { 1, 2};
+    TouchVideoFrame frame2(2, 2, std::move(videoData2), timestamp2);
+
+    motionArgs.videoFrames = {frame1, frame2};
+
+    // We are not checking the return value, because we can't be making assumptions
+    // about the HAL operation, since it will be highly hardware-dependent
+    if (mMotionClassifier) {
+        ASSERT_NO_FATAL_FAILURE(mMotionClassifier->classify(motionArgs));
+    }
+}
+
+/**
+ * Make sure MotionClassifier does not crash when it is reset.
+ */
+TEST_F(MotionClassifierTest, Reset_DoesNotCrash) {
+    if (mMotionClassifier) {
+        ASSERT_NO_FATAL_FAILURE(mMotionClassifier->reset());
+    }
+}
+
+/**
+ * Make sure MotionClassifier does not crash when a device is reset.
+ */
+TEST_F(MotionClassifierTest, DeviceReset_DoesNotCrash) {
+    NotifyDeviceResetArgs args(1/*sequenceNum*/, 2/*eventTime*/, 3/*deviceId*/);
+    if (mMotionClassifier) {
+        ASSERT_NO_FATAL_FAILURE(mMotionClassifier->reset(args));
+    }
+}
+
+} // namespace android
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index de87e7f..0b86555 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -15,12 +15,13 @@
  */
 
 #include "../InputReader.h"
+#include "TestInputListener.h"
 
-#include <inttypes.h>
-#include <utils/List.h>
 #include <gtest/gtest.h>
+#include <inttypes.h>
 #include <math.h>
 
+
 namespace android {
 
 // An arbitrary time value.
@@ -273,114 +274,6 @@
     }
 };
 
-
-// --- FakeInputListener ---
-
-class FakeInputListener : public InputListenerInterface {
-private:
-    List<NotifyConfigurationChangedArgs> mNotifyConfigurationChangedArgsQueue;
-    List<NotifyDeviceResetArgs> mNotifyDeviceResetArgsQueue;
-    List<NotifyKeyArgs> mNotifyKeyArgsQueue;
-    List<NotifyMotionArgs> mNotifyMotionArgsQueue;
-    List<NotifySwitchArgs> mNotifySwitchArgsQueue;
-
-protected:
-    virtual ~FakeInputListener() { }
-
-public:
-    FakeInputListener() {
-    }
-
-    void assertNotifyConfigurationChangedWasCalled(
-            NotifyConfigurationChangedArgs* outEventArgs = nullptr) {
-        ASSERT_FALSE(mNotifyConfigurationChangedArgsQueue.empty())
-                << "Expected notifyConfigurationChanged() to have been called.";
-        if (outEventArgs) {
-            *outEventArgs = *mNotifyConfigurationChangedArgsQueue.begin();
-        }
-        mNotifyConfigurationChangedArgsQueue.erase(mNotifyConfigurationChangedArgsQueue.begin());
-    }
-
-    void assertNotifyConfigurationChangedWasNotCalled() {
-        ASSERT_TRUE(mNotifyConfigurationChangedArgsQueue.empty())
-                << "Expected notifyConfigurationChanged() to not have been called.";
-    }
-
-    void assertNotifyDeviceResetWasCalled(
-            NotifyDeviceResetArgs* outEventArgs = nullptr) {
-        ASSERT_FALSE(mNotifyDeviceResetArgsQueue.empty())
-                << "Expected notifyDeviceReset() to have been called.";
-        if (outEventArgs) {
-            *outEventArgs = *mNotifyDeviceResetArgsQueue.begin();
-        }
-        mNotifyDeviceResetArgsQueue.erase(mNotifyDeviceResetArgsQueue.begin());
-    }
-
-    void assertNotifyDeviceResetWasNotCalled() {
-        ASSERT_TRUE(mNotifyDeviceResetArgsQueue.empty())
-                << "Expected notifyDeviceReset() to not have been called.";
-    }
-
-    void assertNotifyKeyWasCalled(NotifyKeyArgs* outEventArgs = nullptr) {
-        ASSERT_FALSE(mNotifyKeyArgsQueue.empty())
-                << "Expected notifyKey() to have been called.";
-        if (outEventArgs) {
-            *outEventArgs = *mNotifyKeyArgsQueue.begin();
-        }
-        mNotifyKeyArgsQueue.erase(mNotifyKeyArgsQueue.begin());
-    }
-
-    void assertNotifyKeyWasNotCalled() {
-        ASSERT_TRUE(mNotifyKeyArgsQueue.empty())
-                << "Expected notifyKey() to not have been called.";
-    }
-
-    void assertNotifyMotionWasCalled(NotifyMotionArgs* outEventArgs = nullptr) {
-        ASSERT_FALSE(mNotifyMotionArgsQueue.empty())
-                << "Expected notifyMotion() to have been called.";
-        if (outEventArgs) {
-            *outEventArgs = *mNotifyMotionArgsQueue.begin();
-        }
-        mNotifyMotionArgsQueue.erase(mNotifyMotionArgsQueue.begin());
-    }
-
-    void assertNotifyMotionWasNotCalled() {
-        ASSERT_TRUE(mNotifyMotionArgsQueue.empty())
-                << "Expected notifyMotion() to not have been called.";
-    }
-
-    void assertNotifySwitchWasCalled(NotifySwitchArgs* outEventArgs = nullptr) {
-        ASSERT_FALSE(mNotifySwitchArgsQueue.empty())
-                << "Expected notifySwitch() to have been called.";
-        if (outEventArgs) {
-            *outEventArgs = *mNotifySwitchArgsQueue.begin();
-        }
-        mNotifySwitchArgsQueue.erase(mNotifySwitchArgsQueue.begin());
-    }
-
-private:
-    virtual void notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) {
-        mNotifyConfigurationChangedArgsQueue.push_back(*args);
-    }
-
-    virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args) {
-        mNotifyDeviceResetArgsQueue.push_back(*args);
-    }
-
-    virtual void notifyKey(const NotifyKeyArgs* args) {
-        mNotifyKeyArgsQueue.push_back(*args);
-    }
-
-    virtual void notifyMotion(const NotifyMotionArgs* args) {
-        mNotifyMotionArgsQueue.push_back(*args);
-    }
-
-    virtual void notifySwitch(const NotifySwitchArgs* args) {
-        mNotifySwitchArgsQueue.push_back(*args);
-    }
-};
-
-
 // --- FakeEventHub ---
 
 class FakeEventHub : public EventHubInterface {
@@ -1303,7 +1196,7 @@
 
 class InputReaderTest : public testing::Test {
 protected:
-    sp<FakeInputListener> mFakeListener;
+    sp<TestInputListener> mFakeListener;
     sp<FakeInputReaderPolicy> mFakePolicy;
     sp<FakeEventHub> mFakeEventHub;
     sp<InstrumentedInputReader> mReader;
@@ -1311,7 +1204,7 @@
     virtual void SetUp() {
         mFakeEventHub = new FakeEventHub();
         mFakePolicy = new FakeInputReaderPolicy();
-        mFakeListener = new FakeInputListener();
+        mFakeListener = new TestInputListener();
 
         mReader = new InstrumentedInputReader(mFakeEventHub, mFakePolicy, mFakeListener);
     }
@@ -1620,7 +1513,7 @@
 
     sp<FakeEventHub> mFakeEventHub;
     sp<FakeInputReaderPolicy> mFakePolicy;
-    sp<FakeInputListener> mFakeListener;
+    sp<TestInputListener> mFakeListener;
     FakeInputReaderContext* mFakeContext;
 
     InputDevice* mDevice;
@@ -1628,7 +1521,7 @@
     virtual void SetUp() {
         mFakeEventHub = new FakeEventHub();
         mFakePolicy = new FakeInputReaderPolicy();
-        mFakeListener = new FakeInputListener();
+        mFakeListener = new TestInputListener();
         mFakeContext = new FakeInputReaderContext(mFakeEventHub, mFakePolicy, mFakeListener);
 
         mFakeEventHub->addDevice(DEVICE_ID, DEVICE_NAME, 0);
@@ -1815,14 +1708,14 @@
 
     sp<FakeEventHub> mFakeEventHub;
     sp<FakeInputReaderPolicy> mFakePolicy;
-    sp<FakeInputListener> mFakeListener;
+    sp<TestInputListener> mFakeListener;
     FakeInputReaderContext* mFakeContext;
     InputDevice* mDevice;
 
     virtual void SetUp() {
         mFakeEventHub = new FakeEventHub();
         mFakePolicy = new FakeInputReaderPolicy();
-        mFakeListener = new FakeInputListener();
+        mFakeListener = new TestInputListener();
         mFakeContext = new FakeInputReaderContext(mFakeEventHub, mFakePolicy, mFakeListener);
         InputDeviceIdentifier identifier;
         identifier.name = DEVICE_NAME;
diff --git a/services/inputflinger/tests/TestInputListener.cpp b/services/inputflinger/tests/TestInputListener.cpp
new file mode 100644
index 0000000..3ee33f1
--- /dev/null
+++ b/services/inputflinger/tests/TestInputListener.cpp
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#include <gtest/gtest.h>
+
+#include "TestInputListener.h"
+
+namespace android {
+
+// --- TestInputListener ---
+
+TestInputListener::TestInputListener() { }
+
+TestInputListener::~TestInputListener() { }
+
+void TestInputListener::assertNotifyConfigurationChangedWasCalled(
+        NotifyConfigurationChangedArgs* outEventArgs) {
+    ASSERT_FALSE(mNotifyConfigurationChangedArgsQueue.empty())
+            << "Expected notifyConfigurationChanged() to have been called.";
+    if (outEventArgs) {
+        *outEventArgs = *mNotifyConfigurationChangedArgsQueue.begin();
+    }
+    mNotifyConfigurationChangedArgsQueue.erase(mNotifyConfigurationChangedArgsQueue.begin());
+}
+
+void TestInputListener::assertNotifyConfigurationChangedWasNotCalled() {
+    ASSERT_TRUE(mNotifyConfigurationChangedArgsQueue.empty())
+            << "Expected notifyConfigurationChanged() to not have been called.";
+}
+
+void TestInputListener::assertNotifyDeviceResetWasCalled(
+        NotifyDeviceResetArgs* outEventArgs) {
+    ASSERT_FALSE(mNotifyDeviceResetArgsQueue.empty())
+            << "Expected notifyDeviceReset() to have been called.";
+    if (outEventArgs) {
+        *outEventArgs = *mNotifyDeviceResetArgsQueue.begin();
+    }
+    mNotifyDeviceResetArgsQueue.erase(mNotifyDeviceResetArgsQueue.begin());
+}
+
+void TestInputListener::assertNotifyDeviceResetWasNotCalled() {
+    ASSERT_TRUE(mNotifyDeviceResetArgsQueue.empty())
+            << "Expected notifyDeviceReset() to not have been called.";
+}
+
+void TestInputListener::assertNotifyKeyWasCalled(NotifyKeyArgs* outEventArgs) {
+    ASSERT_FALSE(mNotifyKeyArgsQueue.empty()) << "Expected notifyKey() to have been called.";
+    if (outEventArgs) {
+        *outEventArgs = *mNotifyKeyArgsQueue.begin();
+    }
+    mNotifyKeyArgsQueue.erase(mNotifyKeyArgsQueue.begin());
+}
+
+void TestInputListener::assertNotifyKeyWasNotCalled() {
+    ASSERT_TRUE(mNotifyKeyArgsQueue.empty()) << "Expected notifyKey() to not have been called.";
+}
+
+void TestInputListener::assertNotifyMotionWasCalled(NotifyMotionArgs* outEventArgs) {
+    ASSERT_FALSE(mNotifyMotionArgsQueue.empty()) << "Expected notifyMotion() to have been called.";
+    if (outEventArgs) {
+        *outEventArgs = *mNotifyMotionArgsQueue.begin();
+    }
+    mNotifyMotionArgsQueue.erase(mNotifyMotionArgsQueue.begin());
+}
+
+void TestInputListener::assertNotifyMotionWasNotCalled() {
+    ASSERT_TRUE(mNotifyMotionArgsQueue.empty())
+            << "Expected notifyMotion() to not have been called.";
+}
+
+void TestInputListener::assertNotifySwitchWasCalled(NotifySwitchArgs* outEventArgs) {
+    ASSERT_FALSE(mNotifySwitchArgsQueue.empty())
+            << "Expected notifySwitch() to have been called.";
+    if (outEventArgs) {
+        *outEventArgs = *mNotifySwitchArgsQueue.begin();
+    }
+    mNotifySwitchArgsQueue.erase(mNotifySwitchArgsQueue.begin());
+}
+
+void TestInputListener::notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) {
+    mNotifyConfigurationChangedArgsQueue.push_back(*args);
+}
+
+void TestInputListener::notifyDeviceReset(const NotifyDeviceResetArgs* args) {
+    mNotifyDeviceResetArgsQueue.push_back(*args);
+}
+
+void TestInputListener::notifyKey(const NotifyKeyArgs* args) {
+    mNotifyKeyArgsQueue.push_back(*args);
+}
+
+void TestInputListener::notifyMotion(const NotifyMotionArgs* args) {
+    mNotifyMotionArgsQueue.push_back(*args);
+}
+
+void TestInputListener::notifySwitch(const NotifySwitchArgs* args) {
+        mNotifySwitchArgsQueue.push_back(*args);
+    }
+
+
+} // namespace android
diff --git a/services/inputflinger/tests/TestInputListener.h b/services/inputflinger/tests/TestInputListener.h
new file mode 100644
index 0000000..085d343
--- /dev/null
+++ b/services/inputflinger/tests/TestInputListener.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _UI_TEST_INPUT_LISTENER_H
+#define _UI_TEST_INPUT_LISTENER_H
+
+#include <gtest/gtest.h>
+#include "InputListener.h"
+
+namespace android {
+
+// --- TestInputListener ---
+
+class TestInputListener : public InputListenerInterface {
+private:
+    std::vector<NotifyConfigurationChangedArgs> mNotifyConfigurationChangedArgsQueue;
+    std::vector<NotifyDeviceResetArgs> mNotifyDeviceResetArgsQueue;
+    std::vector<NotifyKeyArgs> mNotifyKeyArgsQueue;
+    std::vector<NotifyMotionArgs> mNotifyMotionArgsQueue;
+    std::vector<NotifySwitchArgs> mNotifySwitchArgsQueue;
+
+protected:
+    virtual ~TestInputListener();
+
+public:
+    TestInputListener();
+
+    void assertNotifyConfigurationChangedWasCalled(
+            NotifyConfigurationChangedArgs* outEventArgs = nullptr);
+
+    void assertNotifyConfigurationChangedWasNotCalled();
+
+    void assertNotifyDeviceResetWasCalled(NotifyDeviceResetArgs* outEventArgs = nullptr);
+
+    void assertNotifyDeviceResetWasNotCalled();
+
+    void assertNotifyKeyWasCalled(NotifyKeyArgs* outEventArgs = nullptr);
+
+    void assertNotifyKeyWasNotCalled();
+
+    void assertNotifyMotionWasCalled(NotifyMotionArgs* outEventArgs = nullptr);
+
+    void assertNotifyMotionWasNotCalled();
+
+    void assertNotifySwitchWasCalled(NotifySwitchArgs* outEventArgs = nullptr);
+
+private:
+    virtual void notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args);
+
+    virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args);
+
+    virtual void notifyKey(const NotifyKeyArgs* args);
+
+    virtual void notifyMotion(const NotifyMotionArgs* args);
+
+    virtual void notifySwitch(const NotifySwitchArgs* args);
+};
+
+} // namespace android
+#endif