blob: 11427c3135d8843dc52e5f166f36d1fb76655e69 [file] [log] [blame]
/*
* 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