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Merge pull request #5270 from german77/multiTouch

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HID: Add multitouch support
This commit is contained in:
bunnei 2021-01-20 22:39:01 -08:00 • committed by GitHub
commit a1335d3d51
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19 changed files with 368 additions and 266 deletions
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131
src/core/hle/service/hid/controllers/touchscreen.cpp
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@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <cstring>
#include "common/common_types.h"
#include "core/core_timing.h"
@ -16,7 +17,13 @@ constexpr std::size_t SHARED_MEMORY_OFFSET = 0x400;
Controller_Touchscreen::Controller_Touchscreen(Core::System& system) : ControllerBase(system) {}
Controller_Touchscreen::~Controller_Touchscreen() = default;
void Controller_Touchscreen::OnInit() {}
void Controller_Touchscreen::OnInit() {
for (std::size_t id = 0; id < MAX_FINGERS; ++id) {
mouse_finger_id[id] = MAX_FINGERS;
keyboard_finger_id[id] = MAX_FINGERS;
udp_finger_id[id] = MAX_FINGERS;
}
}
void Controller_Touchscreen::OnRelease() {}
@ -40,38 +47,106 @@ void Controller_Touchscreen::OnUpdate(const Core::Timing::CoreTiming& core_timin
cur_entry.sampling_number = last_entry.sampling_number + 1;
cur_entry.sampling_number2 = cur_entry.sampling_number;
bool pressed = false;
float x, y;
std::tie(x, y, pressed) = touch_device->GetStatus();
auto& touch_entry = cur_entry.states[0];
touch_entry.attribute.raw = 0;
if (!pressed && touch_btn_device) {
std::tie(x, y, pressed) = touch_btn_device->GetStatus();
}
if (pressed && Settings::values.touchscreen.enabled) {
touch_entry.x = static_cast<u16>(x * Layout::ScreenUndocked::Width);
touch_entry.y = static_cast<u16>(y * Layout::ScreenUndocked::Height);
touch_entry.diameter_x = Settings::values.touchscreen.diameter_x;
touch_entry.diameter_y = Settings::values.touchscreen.diameter_y;
touch_entry.rotation_angle = Settings::values.touchscreen.rotation_angle;
const u64 tick = core_timing.GetCPUTicks();
touch_entry.delta_time = tick - last_touch;
last_touch = tick;
touch_entry.finger = Settings::values.touchscreen.finger;
cur_entry.entry_count = 1;
} else {
cur_entry.entry_count = 0;
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) {
mouse_finger_id[id] = UpdateTouchInputEvent(mouse_status[id], mouse_finger_id[id]);
udp_finger_id[id] = UpdateTouchInputEvent(udp_status[id], udp_finger_id[id]);
}
if (Settings::values.use_touch_from_button) {
const Input::TouchStatus& keyboard_status = touch_btn_device->GetStatus();
for (std::size_t id = 0; id < mouse_status.size(); ++id) {
keyboard_finger_id[id] =
UpdateTouchInputEvent(keyboard_status[id], keyboard_finger_id[id]);
}
}
std::array<Finger, 16> active_fingers;
const auto end_iter = std::copy_if(fingers.begin(), fingers.end(), active_fingers.begin(),
[](const auto& finger) { return finger.pressed; });
const auto active_fingers_count =
static_cast<std::size_t>(std::distance(active_fingers.begin(), end_iter));
const u64 tick = core_timing.GetCPUTicks();
cur_entry.entry_count = static_cast<s32_le>(active_fingers_count);
for (std::size_t id = 0; id < MAX_FINGERS; ++id) {
auto& touch_entry = cur_entry.states[id];
if (id < active_fingers_count) {
touch_entry.x = static_cast<u16>(active_fingers[id].x * Layout::ScreenUndocked::Width);
touch_entry.y = static_cast<u16>(active_fingers[id].y * Layout::ScreenUndocked::Height);
touch_entry.diameter_x = Settings::values.touchscreen.diameter_x;
touch_entry.diameter_y = Settings::values.touchscreen.diameter_y;
touch_entry.rotation_angle = Settings::values.touchscreen.rotation_angle;
touch_entry.delta_time = tick - active_fingers[id].last_touch;
fingers[active_fingers[id].id].last_touch = tick;
touch_entry.finger = active_fingers[id].id;
touch_entry.attribute.raw = active_fingers[id].attribute.raw;
} else {
// Clear touch entry
touch_entry.attribute.raw = 0;
touch_entry.x = 0;
touch_entry.y = 0;
touch_entry.diameter_x = 0;
touch_entry.diameter_y = 0;
touch_entry.rotation_angle = 0;
touch_entry.delta_time = 0;
touch_entry.finger = 0;
}
}
std::memcpy(data + SHARED_MEMORY_OFFSET, &shared_memory, sizeof(TouchScreenSharedMemory));
}
void Controller_Touchscreen::OnLoadInputDevices() {
touch_device = Input::CreateDevice<Input::TouchDevice>(Settings::values.touchscreen.device);
if (Settings::values.use_touch_from_button) {
touch_btn_device = Input::CreateDevice<Input::TouchDevice>("engine:touch_from_button");
} else {
touch_btn_device.reset();
}
touch_mouse_device = Input::CreateDevice<Input::TouchDevice>("engine:emu_window");
touch_udp_device = Input::CreateDevice<Input::TouchDevice>("engine:cemuhookudp");
touch_btn_device = Input::CreateDevice<Input::TouchDevice>("engine:touch_from_button");
}
std::optional<std::size_t> Controller_Touchscreen::GetUnusedFingerID() const {
std::size_t first_free_id = 0;
while (first_free_id < MAX_FINGERS) {
if (!fingers[first_free_id].pressed) {
return first_free_id;
} else {
first_free_id++;
}
}
return std::nullopt;
}
std::size_t Controller_Touchscreen::UpdateTouchInputEvent(
const std::tuple<float, float, bool>& touch_input, std::size_t finger_id) {
const auto& [x, y, pressed] = touch_input;
if (pressed) {
Attributes attribute{};
if (finger_id == MAX_FINGERS) {
const auto first_free_id = GetUnusedFingerID();
if (!first_free_id) {
// Invalid finger id do nothing
return MAX_FINGERS;
}
finger_id = first_free_id.value();
fingers[finger_id].pressed = true;
fingers[finger_id].id = static_cast<u32_le>(finger_id);
attribute.start_touch.Assign(1);
}
fingers[finger_id].x = x;
fingers[finger_id].y = y;
fingers[finger_id].attribute = attribute;
return finger_id;
}
if (finger_id != MAX_FINGERS) {
if (!fingers[finger_id].attribute.end_touch) {
fingers[finger_id].attribute.end_touch.Assign(1);
fingers[finger_id].attribute.start_touch.Assign(0);
return finger_id;
}
fingers[finger_id].pressed = false;
}
return MAX_FINGERS;
}
} // namespace Service::HID

32
src/core/hle/service/hid/controllers/touchscreen.h
View file

@ -30,6 +30,18 @@ public:
void OnLoadInputDevices() override;
private:
static constexpr std::size_t MAX_FINGERS = 16;
// Returns an unused finger id, if there is no fingers available std::nullopt will be returned
std::optional<std::size_t> GetUnusedFingerID() const;
// If the touch is new it tries to assing a new finger id, if there is no fingers avaliable no
// changes will be made. Updates the coordinates if the finger id it's already set. If the touch
// ends delays the output by one frame to set the end_touch flag before finally freeing the
// finger id
std::size_t UpdateTouchInputEvent(const std::tuple<float, float, bool>& touch_input,
std::size_t finger_id);
struct Attributes {
union {
u32 raw{};
@ -55,7 +67,7 @@ private:
s64_le sampling_number;
s64_le sampling_number2;
s32_le entry_count;
std::array<TouchState, 16> states;
std::array<TouchState, MAX_FINGERS> states;
};
static_assert(sizeof(TouchScreenEntry) == 0x298, "TouchScreenEntry is an invalid size");
@ -66,9 +78,23 @@ private:
};
static_assert(sizeof(TouchScreenSharedMemory) == 0x3000,
"TouchScreenSharedMemory is an invalid size");
struct Finger {
u64_le last_touch{};
float x{};
float y{};
u32_le id{};
bool pressed{};
Attributes attribute;
};
TouchScreenSharedMemory shared_memory{};
std::unique_ptr<Input::TouchDevice> touch_device;
std::unique_ptr<Input::TouchDevice> touch_mouse_device;
std::unique_ptr<Input::TouchDevice> touch_udp_device;
std::unique_ptr<Input::TouchDevice> touch_btn_device;
s64_le last_touch{};
std::array<std::size_t, MAX_FINGERS> mouse_finger_id;
std::array<std::size_t, MAX_FINGERS> keyboard_finger_id;
std::array<std::size_t, MAX_FINGERS> udp_finger_id;
std::array<Finger, MAX_FINGERS> fingers;
};
} // namespace Service::HID