Merge pull request #5276 from german77/gestures
HID: Implement gestures
This commit is contained in:
Morph
GitHub
commit
ee9ebeeb80
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@ -5,15 +5,25 @@
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#include <cstring>
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#include "common/common_types.h"
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#include "core/core_timing.h"
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#include "core/frontend/emu_window.h"
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#include "core/hle/service/hid/controllers/gesture.h"
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#include "core/settings.h"
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namespace Service::HID {
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constexpr std::size_t SHARED_MEMORY_OFFSET = 0x3BA00;
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constexpr f32 angle_threshold = 0.08f;
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constexpr f32 pinch_threshold = 100.0f;
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Controller_Gesture::Controller_Gesture(Core::System& system) : ControllerBase(system) {}
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Controller_Gesture::~Controller_Gesture() = default;
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void Controller_Gesture::OnInit() {}
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void Controller_Gesture::OnInit() {
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for (std::size_t id = 0; id < MAX_FINGERS; ++id) {
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mouse_finger_id[id] = MAX_FINGERS;
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keyboard_finger_id[id] = MAX_FINGERS;
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udp_finger_id[id] = MAX_FINGERS;
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}
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}
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void Controller_Gesture::OnRelease() {}
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@ -35,10 +45,153 @@ void Controller_Gesture::OnUpdate(const Core::Timing::CoreTiming& core_timing, u
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cur_entry.sampling_number = last_entry.sampling_number + 1;
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cur_entry.sampling_number2 = cur_entry.sampling_number;
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// TODO(ogniK): Update gesture states
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// TODO(german77): Implement all gesture types
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const Input::TouchStatus& mouse_status = touch_mouse_device->GetStatus();
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const Input::TouchStatus& udp_status = touch_udp_device->GetStatus();
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for (std::size_t id = 0; id < mouse_status.size(); ++id) {
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mouse_finger_id[id] = UpdateTouchInputEvent(mouse_status[id], mouse_finger_id[id]);
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udp_finger_id[id] = UpdateTouchInputEvent(udp_status[id], udp_finger_id[id]);
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}
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if (Settings::values.use_touch_from_button) {
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const Input::TouchStatus& keyboard_status = touch_btn_device->GetStatus();
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for (std::size_t id = 0; id < mouse_status.size(); ++id) {
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keyboard_finger_id[id] =
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UpdateTouchInputEvent(keyboard_status[id], keyboard_finger_id[id]);
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}
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}
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TouchType type = TouchType::Idle;
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Attribute attributes{};
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GestureProperties gesture = GetGestureProperties();
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if (last_gesture.active_points != gesture.active_points) {
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++last_gesture.detection_count;
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}
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if (gesture.active_points > 0) {
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if (last_gesture.active_points == 0) {
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attributes.is_new_touch.Assign(true);
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last_gesture.average_distance = gesture.average_distance;
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last_gesture.angle = gesture.angle;
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}
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type = TouchType::Touch;
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if (gesture.mid_point.x != last_entry.x || gesture.mid_point.y != last_entry.y) {
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type = TouchType::Pan;
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}
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if (std::abs(gesture.average_distance - last_gesture.average_distance) > pinch_threshold) {
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type = TouchType::Pinch;
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}
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if (std::abs(gesture.angle - last_gesture.angle) > angle_threshold) {
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type = TouchType::Rotate;
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}
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cur_entry.delta_x = gesture.mid_point.x - last_entry.x;
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cur_entry.delta_y = gesture.mid_point.y - last_entry.y;
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// TODO: Find how velocities are calculated
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cur_entry.vel_x = static_cast<float>(cur_entry.delta_x) * 150.1f;
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cur_entry.vel_y = static_cast<float>(cur_entry.delta_y) * 150.1f;
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// Slowdown the rate of change for less flapping
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last_gesture.average_distance =
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(last_gesture.average_distance * 0.9f) + (gesture.average_distance * 0.1f);
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last_gesture.angle = (last_gesture.angle * 0.9f) + (gesture.angle * 0.1f);
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} else {
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cur_entry.delta_x = 0;
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cur_entry.delta_y = 0;
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cur_entry.vel_x = 0;
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cur_entry.vel_y = 0;
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}
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last_gesture.active_points = gesture.active_points;
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cur_entry.detection_count = last_gesture.detection_count;
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cur_entry.type = type;
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cur_entry.attributes = attributes;
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cur_entry.x = gesture.mid_point.x;
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cur_entry.y = gesture.mid_point.y;
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cur_entry.point_count = static_cast<s32>(gesture.active_points);
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for (size_t id = 0; id < MAX_POINTS; id++) {
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cur_entry.points[id].x = gesture.points[id].x;
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cur_entry.points[id].y = gesture.points[id].y;
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}
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cur_entry.rotation_angle = 0;
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cur_entry.scale = 0;
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std::memcpy(data + SHARED_MEMORY_OFFSET, &shared_memory, sizeof(SharedMemory));
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}
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void Controller_Gesture::OnLoadInputDevices() {}
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void Controller_Gesture::OnLoadInputDevices() {
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touch_mouse_device = Input::CreateDevice<Input::TouchDevice>("engine:emu_window");
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touch_udp_device = Input::CreateDevice<Input::TouchDevice>("engine:cemuhookudp");
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touch_btn_device = Input::CreateDevice<Input::TouchDevice>("engine:touch_from_button");
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}
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std::optional<std::size_t> Controller_Gesture::GetUnusedFingerID() const {
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std::size_t first_free_id = 0;
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while (first_free_id < MAX_POINTS) {
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if (!fingers[first_free_id].pressed) {
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return first_free_id;
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} else {
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first_free_id++;
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}
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}
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return std::nullopt;
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}
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std::size_t Controller_Gesture::UpdateTouchInputEvent(
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const std::tuple<float, float, bool>& touch_input, std::size_t finger_id) {
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const auto& [x, y, pressed] = touch_input;
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if (pressed) {
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if (finger_id == MAX_POINTS) {
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const auto first_free_id = GetUnusedFingerID();
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if (!first_free_id) {
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// Invalid finger id do nothing
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return MAX_POINTS;
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}
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finger_id = first_free_id.value();
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fingers[finger_id].pressed = true;
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}
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fingers[finger_id].x = x;
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fingers[finger_id].y = y;
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return finger_id;
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}
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if (finger_id != MAX_POINTS) {
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fingers[finger_id].pressed = false;
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}
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return MAX_POINTS;
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}
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Controller_Gesture::GestureProperties Controller_Gesture::GetGestureProperties() {
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GestureProperties gesture;
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std::array<Finger, MAX_POINTS> active_fingers;
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const auto end_iter = std::copy_if(fingers.begin(), fingers.end(), active_fingers.begin(),
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[](const auto& finger) { return finger.pressed; });
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gesture.active_points =
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static_cast<std::size_t>(std::distance(active_fingers.begin(), end_iter));
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for (size_t id = 0; id < gesture.active_points; ++id) {
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gesture.points[id].x =
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static_cast<int>(active_fingers[id].x * Layout::ScreenUndocked::Width);
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gesture.points[id].y =
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static_cast<int>(active_fingers[id].y * Layout::ScreenUndocked::Height);
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gesture.mid_point.x += static_cast<int>(gesture.points[id].x / gesture.active_points);
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gesture.mid_point.y += static_cast<int>(gesture.points[id].y / gesture.active_points);
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}
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for (size_t id = 0; id < gesture.active_points; ++id) {
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const double distance =
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std::pow(static_cast<float>(gesture.mid_point.x - gesture.points[id].x), 2) +
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std::pow(static_cast<float>(gesture.mid_point.y - gesture.points[id].y), 2);
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gesture.average_distance +=
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static_cast<float>(distance) / static_cast<float>(gesture.active_points);
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}
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gesture.angle = std::atan2(static_cast<float>(gesture.mid_point.y - gesture.points[0].y),
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static_cast<float>(gesture.mid_point.x - gesture.points[0].x));
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return gesture;
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}
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} // namespace Service::HID
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@ -5,8 +5,10 @@
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#pragma once
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#include <array>
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#include "common/bit_field.h"
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#include "common/common_types.h"
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#include "common/swap.h"
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#include "core/frontend/input.h"
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#include "core/hle/service/hid/controllers/controller_base.h"
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namespace Service::HID {
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@ -28,29 +30,64 @@ public:
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void OnLoadInputDevices() override;
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private:
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struct Locations {
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static constexpr size_t MAX_FINGERS = 16;
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static constexpr size_t MAX_POINTS = 4;
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enum class TouchType : u32 {
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Idle, // Nothing touching the screen
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Complete, // Unknown. End of touch?
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Cancel, // Never triggered
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Touch, // Pressing without movement
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Press, // Never triggered
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Tap, // Fast press then release
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Pan, // All points moving together across the screen
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Swipe, // Fast press movement and release of a single point
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Pinch, // All points moving away/closer to the midpoint
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Rotate, // All points rotating from the midpoint
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};
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enum class Direction : u32 {
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None,
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Left,
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Up,
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Right,
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Down,
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};
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struct Attribute {
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union {
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u32_le raw{};
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BitField<0, 1, u32> is_new_touch;
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BitField<1, 1, u32> is_double_tap;
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};
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};
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static_assert(sizeof(Attribute) == 4, "Attribute is an invalid size");
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struct Points {
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s32_le x;
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s32_le y;
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};
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static_assert(sizeof(Points) == 8, "Points is an invalid size");
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struct GestureState {
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s64_le sampling_number;
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s64_le sampling_number2;
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s64_le detection_count;
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s32_le type;
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s32_le dir;
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TouchType type;
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Direction dir;
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s32_le x;
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s32_le y;
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s32_le delta_x;
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s32_le delta_y;
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f32 vel_x;
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f32 vel_y;
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s32_le attributes;
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f32 scale;
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f32 rotation;
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s32_le location_count;
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std::array<Locations, 4> locations;
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Attribute attributes;
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u32 scale;
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u32 rotation_angle;
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s32_le point_count;
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std::array<Points, 4> points;
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};
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static_assert(sizeof(GestureState) == 0x68, "GestureState is an invalid size");
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@ -58,6 +95,45 @@ private:
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CommonHeader header;
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std::array<GestureState, 17> gesture_states;
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};
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static_assert(sizeof(SharedMemory) == 0x708, "SharedMemory is an invalid size");
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struct Finger {
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f32 x{};
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f32 y{};
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bool pressed{};
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};
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struct GestureProperties {
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std::array<Points, MAX_POINTS> points{};
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std::size_t active_points{};
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Points mid_point{};
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s64_le detection_count{};
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u64_le delta_time{};
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float average_distance{};
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float angle{};
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};
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// Returns an unused finger id, if there is no fingers avaliable MAX_FINGERS will be returned
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std::optional<size_t> GetUnusedFingerID() const;
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/** If the touch is new it tries to assing a new finger id, if there is no fingers avaliable no
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* changes will be made. Updates the coordinates if the finger id it's already set. If the touch
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* ends delays the output by one frame to set the end_touch flag before finally freeing the
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* finger id */
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size_t UpdateTouchInputEvent(const std::tuple<float, float, bool>& touch_input,
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size_t finger_id);
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// Returns the average distance, angle and middle point of the active fingers
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GestureProperties GetGestureProperties();
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SharedMemory shared_memory{};
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std::unique_ptr<Input::TouchDevice> touch_mouse_device;
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std::unique_ptr<Input::TouchDevice> touch_udp_device;
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std::unique_ptr<Input::TouchDevice> touch_btn_device;
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std::array<size_t, MAX_FINGERS> mouse_finger_id;
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std::array<size_t, MAX_FINGERS> keyboard_finger_id;
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std::array<size_t, MAX_FINGERS> udp_finger_id;
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std::array<Finger, MAX_POINTS> fingers;
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GestureProperties last_gesture;
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};
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} // namespace Service::HID
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