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hid: Improve hardware accuracy of gestures

This commit is contained in:
german77 2021-05-01 17:02:35 -05:00
parent 403cf6be69
commit 8c30ed6d09
2 changed files with 340 additions and 76 deletions
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347
src/core/hle/service/hid/controllers/gesture.cpp
View File

@ -1,10 +1,9 @@
// Copyright 2018 yuzu emulator team
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include "common/common_types.h"
#include "common/logging/log.h"
#include "common/math_util.h"
#include "common/settings.h"
#include "core/core_timing.h"
#include "core/frontend/emu_window.h"
@ -12,10 +11,19 @@
namespace Service::HID {
constexpr std::size_t SHARED_MEMORY_OFFSET = 0x3BA00;
constexpr f32 angle_threshold = 0.08f;
constexpr f32 pinch_threshold = 100.0f;
Controller_Gesture::Controller_Gesture(Core::System& system_) : ControllerBase{system_} {}
// HW is around 700, value is set to 400 to make it easier to trigger with mouse
constexpr f32 swipe_threshold = 400.0f; // Threshold in pixels/s
constexpr f32 angle_threshold = 0.015f; // Threshold in radians
constexpr f32 pinch_threshold = 0.5f; // Threshold in pixels
constexpr f32 press_delay = 0.5f; // Time in seconds
constexpr f32 double_tap_delay = 0.35f; // Time in seconds
constexpr f32 Square(s32 num) {
return static_cast<f32>(num * num);
}
Controller_Gesture::Controller_Gesture(Core::System& system) : ControllerBase(system) {}
Controller_Gesture::~Controller_Gesture() = default;
void Controller_Gesture::OnInit() {
@ -24,6 +32,8 @@ void Controller_Gesture::OnInit() {
keyboard_finger_id[id] = MAX_POINTS;
udp_finger_id[id] = MAX_POINTS;
}
shared_memory.header.entry_count = 0;
force_update = true;
}
void Controller_Gesture::OnRelease() {}
@ -38,17 +48,23 @@ void Controller_Gesture::OnUpdate(const Core::Timing::CoreTiming& core_timing, u
shared_memory.header.last_entry_index = 0;
return;
}
shared_memory.header.entry_count = 16;
const auto& last_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
shared_memory.header.last_entry_index = (shared_memory.header.last_entry_index + 1) % 17;
auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
ReadTouchInput();
cur_entry.sampling_number = last_entry.sampling_number + 1;
cur_entry.sampling_number2 = cur_entry.sampling_number;
GestureProperties gesture = GetGestureProperties();
f32 time_difference = static_cast<f32>(shared_memory.header.timestamp - last_update_timestamp) /
(1000 * 1000 * 1000);
// TODO(german77): Implement all gesture types
// Only update if necesary
if (!ShouldUpdateGesture(gesture, time_difference)) {
return;
}
last_update_timestamp = shared_memory.header.timestamp;
UpdateGestureSharedMemory(data, size, gesture, time_difference);
}
void Controller_Gesture::ReadTouchInput() {
const Input::TouchStatus& mouse_status = touch_mouse_device->GetStatus();
const Input::TouchStatus& udp_status = touch_udp_device->GetStatus();
for (std::size_t id = 0; id < mouse_status.size(); ++id) {
@ -63,50 +79,71 @@ void Controller_Gesture::OnUpdate(const Core::Timing::CoreTiming& core_timing, u
UpdateTouchInputEvent(keyboard_status[id], keyboard_finger_id[id]);
}
}
}
bool Controller_Gesture::ShouldUpdateGesture(const GestureProperties& gesture,
f32 time_difference) {
const auto& last_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
if (force_update) {
force_update = false;
return true;
}
// Update if coordinates change
for (size_t id = 0; id < MAX_POINTS; id++) {
if (gesture.points[id].x != last_gesture.points[id].x ||
gesture.points[id].y != last_gesture.points[id].y) {
return true;
}
}
// Update on press and hold event after 0.5 seconds
if (last_entry.type == TouchType::Touch && last_entry.point_count == 1 &&
time_difference > press_delay) {
return enable_press_and_tap;
}
return false;
}
void Controller_Gesture::UpdateGestureSharedMemory(u8* data, std::size_t size,
GestureProperties& gesture,
f32 time_difference) {
TouchType type = TouchType::Idle;
Attribute attributes{};
GestureProperties gesture = GetGestureProperties();
if (last_gesture.active_points != gesture.active_points) {
++last_gesture.detection_count;
const auto& last_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
shared_memory.header.last_entry_index = (shared_memory.header.last_entry_index + 1) % 17;
auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
if (shared_memory.header.entry_count < 16) {
shared_memory.header.entry_count++;
}
cur_entry.sampling_number = last_entry.sampling_number + 1;
cur_entry.sampling_number2 = cur_entry.sampling_number;
// Reset values to default
cur_entry.delta_x = 0;
cur_entry.delta_y = 0;
cur_entry.vel_x = 0;
cur_entry.vel_y = 0;
cur_entry.direction = Direction::None;
cur_entry.rotation_angle = 0;
cur_entry.scale = 0;
if (gesture.active_points > 0) {
if (last_gesture.active_points == 0) {
attributes.is_new_touch.Assign(true);
last_gesture.average_distance = gesture.average_distance;
last_gesture.angle = gesture.angle;
NewGesture(gesture, type, attributes);
} else {
UpdateExistingGesture(gesture, type, time_difference);
}
type = TouchType::Touch;
if (gesture.mid_point.x != last_entry.x || gesture.mid_point.y != last_entry.y) {
type = TouchType::Pan;
}
if (std::abs(gesture.average_distance - last_gesture.average_distance) > pinch_threshold) {
type = TouchType::Pinch;
}
if (std::abs(gesture.angle - last_gesture.angle) > angle_threshold) {
type = TouchType::Rotate;
}
cur_entry.delta_x = gesture.mid_point.x - last_entry.x;
cur_entry.delta_y = gesture.mid_point.y - last_entry.y;
// TODO: Find how velocities are calculated
cur_entry.vel_x = static_cast<float>(cur_entry.delta_x) * 150.1f;
cur_entry.vel_y = static_cast<float>(cur_entry.delta_y) * 150.1f;
// Slowdown the rate of change for less flapping
last_gesture.average_distance =
(last_gesture.average_distance * 0.9f) + (gesture.average_distance * 0.1f);
last_gesture.angle = (last_gesture.angle * 0.9f) + (gesture.angle * 0.1f);
} else {
cur_entry.delta_x = 0;
cur_entry.delta_y = 0;
cur_entry.vel_x = 0;
cur_entry.vel_y = 0;
EndGesture(gesture, last_gesture, type, attributes, time_difference);
}
last_gesture.active_points = gesture.active_points;
cur_entry.detection_count = last_gesture.detection_count;
// Apply attributes
cur_entry.detection_count = gesture.detection_count;
cur_entry.type = type;
cur_entry.attributes = attributes;
cur_entry.x = gesture.mid_point.x;
@ -116,12 +153,190 @@ void Controller_Gesture::OnUpdate(const Core::Timing::CoreTiming& core_timing, u
cur_entry.points[id].x = gesture.points[id].x;
cur_entry.points[id].y = gesture.points[id].y;
}
cur_entry.rotation_angle = 0;
cur_entry.scale = 0;
last_gesture = gesture;
std::memcpy(data + SHARED_MEMORY_OFFSET, &shared_memory, sizeof(SharedMemory));
}
void Controller_Gesture::NewGesture(GestureProperties& gesture, TouchType& type,
Attribute& attributes) {
const auto& last_entry =
shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
gesture.detection_count++;
type = TouchType::Touch;
// New touch after cancel is not considered new
if (last_entry.type != TouchType::Cancel) {
attributes.is_new_touch.Assign(1);
enable_press_and_tap = true;
}
}
void Controller_Gesture::UpdateExistingGesture(GestureProperties& gesture, TouchType& type,
f32 time_difference) {
const auto& last_entry =
shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
// Promote to pan type if touch moved
for (size_t id = 0; id < MAX_POINTS; id++) {
if (gesture.points[id].x != last_gesture.points[id].x ||
gesture.points[id].y != last_gesture.points[id].y) {
type = TouchType::Pan;
break;
}
}
// Number of fingers changed cancel the last event and clear data
if (gesture.active_points != last_gesture.active_points) {
type = TouchType::Cancel;
enable_press_and_tap = false;
gesture.active_points = 0;
gesture.mid_point = {};
for (size_t id = 0; id < MAX_POINTS; id++) {
gesture.points[id].x = 0;
gesture.points[id].y = 0;
}
return;
}
// Calculate extra parameters of panning
if (type == TouchType::Pan) {
UpdatePanEvent(gesture, last_gesture, type, time_difference);
return;
}
// Promote to press type
if (last_entry.type == TouchType::Touch) {
type = TouchType::Press;
}
}
void Controller_Gesture::EndGesture(GestureProperties& gesture, GestureProperties& last_gesture,
TouchType& type, Attribute& attributes, f32 time_difference) {
const auto& last_entry =
shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
if (last_gesture.active_points != 0) {
switch (last_entry.type) {
case TouchType::Touch:
if (enable_press_and_tap) {
SetTapEvent(gesture, last_gesture, type, attributes);
return;
}
type = TouchType::Cancel;
force_update = true;
break;
case TouchType::Press:
case TouchType::Tap:
case TouchType::Swipe:
case TouchType::Pinch:
case TouchType::Rotate:
type = TouchType::Complete;
force_update = true;
break;
case TouchType::Pan:
EndPanEvent(gesture, last_gesture, type, time_difference);
break;
default:
break;
}
return;
}
if (last_entry.type == TouchType::Complete || last_entry.type == TouchType::Cancel) {
gesture.detection_count++;
}
}
void Controller_Gesture::SetTapEvent(GestureProperties& gesture, GestureProperties& last_gesture,
TouchType& type, Attribute& attributes) {
type = TouchType::Tap;
gesture = last_gesture;
force_update = true;
f32 tap_time_difference =
static_cast<f32>(last_update_timestamp - last_tap_timestamp) / (1000 * 1000 * 1000);
last_tap_timestamp = last_update_timestamp;
if (tap_time_difference < double_tap_delay) {
attributes.is_double_tap.Assign(1);
}
}
void Controller_Gesture::UpdatePanEvent(GestureProperties& gesture, GestureProperties& last_gesture,
TouchType& type, f32 time_difference) {
auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
const auto& last_entry =
shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
cur_entry.delta_x = gesture.mid_point.x - last_entry.x;
cur_entry.delta_y = gesture.mid_point.y - last_entry.y;
cur_entry.vel_x = static_cast<f32>(cur_entry.delta_x) / time_difference;
cur_entry.vel_y = static_cast<f32>(cur_entry.delta_y) / time_difference;
last_pan_time_difference = time_difference;
// Promote to pinch type
if (std::abs(gesture.average_distance - last_gesture.average_distance) > pinch_threshold) {
type = TouchType::Pinch;
cur_entry.scale = gesture.average_distance / last_gesture.average_distance;
}
const f32 angle_between_two_lines = std::atan((gesture.angle - last_gesture.angle) /
(1 + (gesture.angle * last_gesture.angle)));
// Promote to rotate type
if (std::abs(angle_between_two_lines) > angle_threshold) {
type = TouchType::Rotate;
cur_entry.scale = 0;
cur_entry.rotation_angle = angle_between_two_lines * 180.0f / Common::PI;
}
}
void Controller_Gesture::EndPanEvent(GestureProperties& gesture, GestureProperties& last_gesture,
TouchType& type, f32 time_difference) {
auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
const auto& last_entry =
shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
cur_entry.vel_x =
static_cast<f32>(last_entry.delta_x) / (last_pan_time_difference + time_difference);
cur_entry.vel_y =
static_cast<f32>(last_entry.delta_y) / (last_pan_time_difference + time_difference);
const f32 curr_vel =
std::sqrt((cur_entry.vel_x * cur_entry.vel_x) + (cur_entry.vel_y * cur_entry.vel_y));
// Set swipe event with parameters
if (curr_vel > swipe_threshold) {
SetSwipeEvent(gesture, last_gesture, type);
return;
}
// End panning without swipe
type = TouchType::Complete;
cur_entry.vel_x = 0;
cur_entry.vel_y = 0;
force_update = true;
}
void Controller_Gesture::SetSwipeEvent(GestureProperties& gesture, GestureProperties& last_gesture,
TouchType& type) {
auto& cur_entry = shared_memory.gesture_states[shared_memory.header.last_entry_index];
const auto& last_entry =
shared_memory.gesture_states[(shared_memory.header.last_entry_index + 16) % 17];
type = TouchType::Swipe;
gesture = last_gesture;
force_update = true;
cur_entry.delta_x = last_entry.delta_x;
cur_entry.delta_y = last_entry.delta_y;
if (std::abs(cur_entry.delta_x) > std::abs(cur_entry.delta_y)) {
if (cur_entry.delta_x > 0) {
cur_entry.direction = Direction::Right;
return;
}
cur_entry.direction = Direction::Left;
return;
}
if (cur_entry.delta_y > 0) {
cur_entry.direction = Direction::Down;
return;
}
cur_entry.direction = Direction::Up;
}
void Controller_Gesture::OnLoadInputDevices() {
touch_mouse_device = Input::CreateDevice<Input::TouchDevice>("engine:emu_window");
touch_udp_device = Input::CreateDevice<Input::TouchDevice>("engine:cemuhookudp");
@ -183,23 +398,33 @@ Controller_Gesture::GestureProperties Controller_Gesture::GetGestureProperties()
for (size_t id = 0; id < gesture.active_points; ++id) {
gesture.points[id].x =
static_cast<int>(active_fingers[id].x * Layout::ScreenUndocked::Width);
static_cast<s32>(active_fingers[id].x * Layout::ScreenUndocked::Width);
gesture.points[id].y =
static_cast<int>(active_fingers[id].y * Layout::ScreenUndocked::Height);
gesture.mid_point.x += static_cast<int>(gesture.points[id].x / gesture.active_points);
gesture.mid_point.y += static_cast<int>(gesture.points[id].y / gesture.active_points);
static_cast<s32>(active_fingers[id].y * Layout::ScreenUndocked::Height);
// Hack: There is no touch in docked but games still allow it
if (Settings::values.use_docked_mode.GetValue()) {
gesture.points[id].x =
static_cast<s32>(active_fingers[id].x * Layout::ScreenDocked::Width);
gesture.points[id].y =
static_cast<s32>(active_fingers[id].y * Layout::ScreenDocked::Height);
}
gesture.mid_point.x += static_cast<s32>(gesture.points[id].x / gesture.active_points);
gesture.mid_point.y += static_cast<s32>(gesture.points[id].y / gesture.active_points);
}
for (size_t id = 0; id < gesture.active_points; ++id) {
const double distance =
std::pow(static_cast<float>(gesture.mid_point.x - gesture.points[id].x), 2) +
std::pow(static_cast<float>(gesture.mid_point.y - gesture.points[id].y), 2);
gesture.average_distance +=
static_cast<float>(distance) / static_cast<float>(gesture.active_points);
const f32 distance = std::sqrt(Square(gesture.mid_point.x - gesture.points[id].x) +
Square(gesture.mid_point.y - gesture.points[id].y));
gesture.average_distance += distance / static_cast<f32>(gesture.active_points);
}
gesture.angle = std::atan2(static_cast<float>(gesture.mid_point.y - gesture.points[0].y),
static_cast<float>(gesture.mid_point.x - gesture.points[0].x));
gesture.angle = std::atan2(static_cast<f32>(gesture.mid_point.y - gesture.points[0].y),
static_cast<f32>(gesture.mid_point.x - gesture.points[0].x));
gesture.detection_count = last_gesture.detection_count;
return gesture;
}

69
src/core/hle/service/hid/controllers/gesture.h
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@ -1,4 +1,4 @@
// Copyright 2018 yuzu emulator team
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
@ -7,7 +7,6 @@
#include <array>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "common/swap.h"
#include "core/frontend/input.h"
#include "core/hle/service/hid/controllers/controller_base.h"
@ -35,10 +34,10 @@ private:
enum class TouchType : u32 {
Idle, // Nothing touching the screen
Complete, // Unknown. End of touch?
Cancel, // Never triggered
Touch, // Pressing without movement
Press, // Never triggered
Complete, // Set at the end of a touch event
Cancel, // Set when the number of fingers change
Touch, // A finger just touched the screen
Press, // Set if last type is touch and the finger hasn't moved
Tap, // Fast press then release
Pan, // All points moving together across the screen
Swipe, // Fast press movement and release of a single point
@ -58,8 +57,8 @@ private:
union {
u32_le raw{};
BitField<0, 1, u32> is_new_touch;
BitField<1, 1, u32> is_double_tap;
BitField<4, 1, u32> is_new_touch;
BitField<8, 1, u32> is_double_tap;
};
};
static_assert(sizeof(Attribute) == 4, "Attribute is an invalid size");
@ -73,10 +72,9 @@ private:
struct GestureState {
s64_le sampling_number;
s64_le sampling_number2;
s64_le detection_count;
TouchType type;
Direction dir;
Direction direction;
s32_le x;
s32_le y;
s32_le delta_x;
@ -84,8 +82,8 @@ private:
f32 vel_x;
f32 vel_y;
Attribute attributes;
u32 scale;
u32 rotation_angle;
f32 scale;
f32 rotation_angle;
s32_le point_count;
std::array<Points, 4> points;
};
@ -109,10 +107,46 @@ private:
Points mid_point{};
s64_le detection_count{};
u64_le delta_time{};
float average_distance{};
float angle{};
f32 average_distance{};
f32 angle{};
};
// Reads input from all available input engines
void ReadTouchInput();
// Returns true if gesture state needs to be updated
bool ShouldUpdateGesture(const GestureProperties& gesture, f32 time_difference);
// Updates the shared memory to the next state
void UpdateGestureSharedMemory(u8* data, std::size_t size, GestureProperties& gesture,
f32 time_difference);
// Initializes new gesture
void NewGesture(GestureProperties& gesture, TouchType& type, Attribute& attributes);
// Updates existing gesture state
void UpdateExistingGesture(GestureProperties& gesture, TouchType& type, f32 time_difference);
// Terminates exiting gesture
void EndGesture(GestureProperties& gesture, GestureProperties& last_gesture, TouchType& type,
Attribute& attributes, f32 time_difference);
// Set current event to a tap event
void SetTapEvent(GestureProperties& gesture, GestureProperties& last_gesture, TouchType& type,
Attribute& attributes);
// Calculates and set the extra parameters related to a pan event
void UpdatePanEvent(GestureProperties& gesture, GestureProperties& last_gesture,
TouchType& type, f32 time_difference);
// Terminates the pan event
void EndPanEvent(GestureProperties& gesture, GestureProperties& last_gesture, TouchType& type,
f32 time_difference);
// Set current event to a swipe event
void SetSwipeEvent(GestureProperties& gesture, GestureProperties& last_gesture,
TouchType& type);
// Returns an unused finger id, if there is no fingers avaliable MAX_FINGERS will be returned
std::optional<size_t> GetUnusedFingerID() const;
@ -134,6 +168,11 @@ private:
std::array<size_t, MAX_FINGERS> keyboard_finger_id;
std::array<size_t, MAX_FINGERS> udp_finger_id;
std::array<Finger, MAX_POINTS> fingers;
GestureProperties last_gesture;
GestureProperties last_gesture{};
s64_le last_update_timestamp{};
s64_le last_tap_timestamp{};
f32 last_pan_time_difference{};
bool force_update{false};
bool enable_press_and_tap{false};
};
} // namespace Service::HID