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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <cstring>
#include "common/common_types.h"
#include "common/logging/log.h"
#include "common/settings.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/frontend/emu_window.h"
#include "core/hle/service/hid/controllers/touchscreen.h"
namespace Service::HID {
constexpr std::size_t SHARED_MEMORY_OFFSET = 0x400;
Controller_Touchscreen::Controller_Touchscreen(Core::System& system_) : ControllerBase{system_} {
console = system.HIDCore().GetEmulatedConsole();
}
Controller_Touchscreen::~Controller_Touchscreen() = default;
void Controller_Touchscreen::OnInit() {}
void Controller_Touchscreen::OnRelease() {}
void Controller_Touchscreen::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8* data,
std::size_t size) {
touch_screen_lifo.timestamp = core_timing.GetCPUTicks();
if (!IsControllerActivated()) {
touch_screen_lifo.entry_count = 0;
touch_screen_lifo.last_entry_index = 0;
std::memcpy(data, &touch_screen_lifo, sizeof(touch_screen_lifo));
return;
}
const auto touch_status = console->GetTouch();
for (std::size_t id = 0; id < MAX_FINGERS; id++) {
const auto& current_touch = touch_status[id];
auto& finger = fingers[id];
finger.position = current_touch.position;
finger.id = current_touch.id;
if (finger.attribute.start_touch) {
finger.attribute.raw = 0;
continue;
}
if (finger.attribute.end_touch) {
finger.attribute.raw = 0;
finger.pressed = false;
continue;
}
if (!finger.pressed && current_touch.pressed) {
finger.attribute.start_touch.Assign(1);
finger.pressed = true;
continue;
}
if (finger.pressed && !current_touch.pressed) {
finger.attribute.raw = 0;
finger.attribute.end_touch.Assign(1);
}
}
std::array<Finger, MAX_FINGERS> 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();
const auto& last_entry = touch_screen_lifo.ReadCurrentEntry().state;
next_state.sampling_number = last_entry.sampling_number + 1;
next_state.entry_count = static_cast<s32_le>(active_fingers_count);
for (std::size_t id = 0; id < MAX_FINGERS; ++id) {
auto& touch_entry = next_state.states[id];
if (id < active_fingers_count) {
const auto& [active_x, active_y] = active_fingers[id].position;
touch_entry.position = {
.x = static_cast<u16>(active_x * Layout::ScreenUndocked::Width),
.y = static_cast<u16>(active_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.position = {};
touch_entry.diameter_x = 0;
touch_entry.diameter_y = 0;
touch_entry.rotation_angle = 0;
touch_entry.delta_time = 0;
touch_entry.finger = 0;
}
}
touch_screen_lifo.WriteNextEntry(next_state);
std::memcpy(data + SHARED_MEMORY_OFFSET, &touch_screen_lifo, sizeof(touch_screen_lifo));
}
} // namespace Service::HID
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