1 files changed, 451 insertions, 0 deletions
diff --git a/src/core/hid/emulated_devices.cpp b/src/core/hid/emulated_devices.cpp
new file mode 100644
index 000000000..874780ec2
--- /dev/null
+++ b/src/core/hid/emulated_devices.cpp
@@ -0,0 +1,451 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included
+
+#include <algorithm>
+#include <fmt/format.h>
+
+#include "core/hid/emulated_devices.h"
+#include "core/hid/input_converter.h"
+
+namespace Core::HID {
+
+EmulatedDevices::EmulatedDevices() = default;
+
+EmulatedDevices::~EmulatedDevices() = default;
+
+void EmulatedDevices::ReloadFromSettings() {
+    ReloadInput();
+}
+
+void EmulatedDevices::ReloadInput() {
+    // If you load any device here add the equivalent to the UnloadInput() function
+    std::size_t key_index = 0;
+    for (auto& mouse_device : mouse_button_devices) {
+        Common::ParamPackage mouse_params;
+        mouse_params.Set("engine", "mouse");
+        mouse_params.Set("button", static_cast<int>(key_index));
+        mouse_device = Common::Input::CreateDevice<Common::Input::InputDevice>(mouse_params);
+        key_index++;
+    }
+
+    mouse_stick_device = Common::Input::CreateDeviceFromString<Common::Input::InputDevice>(
+        "engine:mouse,axis_x:0,axis_y:1");
+
+    // First two axis are reserved for mouse position
+    key_index = 2;
+    for (auto& mouse_device : mouse_analog_devices) {
+        Common::ParamPackage mouse_params;
+        mouse_params.Set("engine", "mouse");
+        mouse_params.Set("axis", static_cast<int>(key_index));
+        mouse_device = Common::Input::CreateDevice<Common::Input::InputDevice>(mouse_params);
+        key_index++;
+    }
+
+    key_index = 0;
+    for (auto& keyboard_device : keyboard_devices) {
+        // Keyboard keys are only mapped on port 1, pad 0
+        Common::ParamPackage keyboard_params;
+        keyboard_params.Set("engine", "keyboard");
+        keyboard_params.Set("button", static_cast<int>(key_index));
+        keyboard_params.Set("port", 1);
+        keyboard_params.Set("pad", 0);
+        keyboard_device = Common::Input::CreateDevice<Common::Input::InputDevice>(keyboard_params);
+        key_index++;
+    }
+
+    key_index = 0;
+    for (auto& keyboard_device : keyboard_modifier_devices) {
+        // Keyboard moddifiers are only mapped on port 1, pad 1
+        Common::ParamPackage keyboard_params;
+        keyboard_params.Set("engine", "keyboard");
+        keyboard_params.Set("button", static_cast<int>(key_index));
+        keyboard_params.Set("port", 1);
+        keyboard_params.Set("pad", 1);
+        keyboard_device = Common::Input::CreateDevice<Common::Input::InputDevice>(keyboard_params);
+        key_index++;
+    }
+
+    for (std::size_t index = 0; index < mouse_button_devices.size(); ++index) {
+        if (!mouse_button_devices[index]) {
+            continue;
+        }
+        Common::Input::InputCallback button_callback{
+            [this, index](Common::Input::CallbackStatus callback) {
+                SetMouseButton(callback, index);
+            }};
+        mouse_button_devices[index]->SetCallback(button_callback);
+    }
+
+    for (std::size_t index = 0; index < mouse_analog_devices.size(); ++index) {
+        if (!mouse_analog_devices[index]) {
+            continue;
+        }
+        Common::Input::InputCallback button_callback{
+            [this, index](Common::Input::CallbackStatus callback) {
+                SetMouseAnalog(callback, index);
+            }};
+        mouse_analog_devices[index]->SetCallback(button_callback);
+    }
+
+    if (mouse_stick_device) {
+        Common::Input::InputCallback button_callback{
+            [this](Common::Input::CallbackStatus callback) { SetMouseStick(callback); }};
+        mouse_stick_device->SetCallback(button_callback);
+    }
+
+    for (std::size_t index = 0; index < keyboard_devices.size(); ++index) {
+        if (!keyboard_devices[index]) {
+            continue;
+        }
+        Common::Input::InputCallback button_callback{
+            [this, index](Common::Input::CallbackStatus callback) {
+                SetKeyboardButton(callback, index);
+            }};
+        keyboard_devices[index]->SetCallback(button_callback);
+    }
+
+    for (std::size_t index = 0; index < keyboard_modifier_devices.size(); ++index) {
+        if (!keyboard_modifier_devices[index]) {
+            continue;
+        }
+        Common::Input::InputCallback button_callback{
+            [this, index](Common::Input::CallbackStatus callback) {
+                SetKeyboardModifier(callback, index);
+            }};
+        keyboard_modifier_devices[index]->SetCallback(button_callback);
+    }
+}
+
+void EmulatedDevices::UnloadInput() {
+    for (auto& button : mouse_button_devices) {
+        button.reset();
+    }
+    for (auto& analog : mouse_analog_devices) {
+        analog.reset();
+    }
+    mouse_stick_device.reset();
+    for (auto& button : keyboard_devices) {
+        button.reset();
+    }
+    for (auto& button : keyboard_modifier_devices) {
+        button.reset();
+    }
+}
+
+void EmulatedDevices::EnableConfiguration() {
+    is_configuring = true;
+    SaveCurrentConfig();
+}
+
+void EmulatedDevices::DisableConfiguration() {
+    is_configuring = false;
+}
+
+bool EmulatedDevices::IsConfiguring() const {
+    return is_configuring;
+}
+
+void EmulatedDevices::SaveCurrentConfig() {
+    if (!is_configuring) {
+        return;
+    }
+}
+
+void EmulatedDevices::RestoreConfig() {
+    if (!is_configuring) {
+        return;
+    }
+    ReloadFromSettings();
+}
+
+void EmulatedDevices::SetKeyboardButton(Common::Input::CallbackStatus callback, std::size_t index) {
+    if (index >= device_status.keyboard_values.size()) {
+        return;
+    }
+    std::lock_guard lock{mutex};
+    bool value_changed = false;
+    const auto new_status = TransformToButton(callback);
+    auto& current_status = device_status.keyboard_values[index];
+    current_status.toggle = new_status.toggle;
+
+    // Update button status with current status
+    if (!current_status.toggle) {
+        current_status.locked = false;
+        if (current_status.value != new_status.value) {
+            current_status.value = new_status.value;
+            value_changed = true;
+        }
+    } else {
+        // Toggle button and lock status
+        if (new_status.value && !current_status.locked) {
+            current_status.locked = true;
+            current_status.value = !current_status.value;
+            value_changed = true;
+        }
+
+        // Unlock button, ready for next press
+        if (!new_status.value && current_status.locked) {
+            current_status.locked = false;
+        }
+    }
+
+    if (!value_changed) {
+        return;
+    }
+
+    if (is_configuring) {
+        TriggerOnChange(DeviceTriggerType::Keyboard);
+        return;
+    }
+
+    // Index should be converted from NativeKeyboard to KeyboardKeyIndex
+    UpdateKey(index, current_status.value);
+
+    TriggerOnChange(DeviceTriggerType::Keyboard);
+}
+
+void EmulatedDevices::UpdateKey(std::size_t key_index, bool status) {
+    constexpr std::size_t KEYS_PER_BYTE = 8;
+    auto& entry = device_status.keyboard_state.key[key_index / KEYS_PER_BYTE];
+    const u8 mask = static_cast<u8>(1 << (key_index % KEYS_PER_BYTE));
+    if (status) {
+        entry = entry | mask;
+    } else {
+        entry = static_cast<u8>(entry & ~mask);
+    }
+}
+
+void EmulatedDevices::SetKeyboardModifier(Common::Input::CallbackStatus callback,
+                                          std::size_t index) {
+    if (index >= device_status.keyboard_moddifier_values.size()) {
+        return;
+    }
+    std::lock_guard lock{mutex};
+    bool value_changed = false;
+    const auto new_status = TransformToButton(callback);
+    auto& current_status = device_status.keyboard_moddifier_values[index];
+    current_status.toggle = new_status.toggle;
+
+    // Update button status with current
+    if (!current_status.toggle) {
+        current_status.locked = false;
+        if (current_status.value != new_status.value) {
+            current_status.value = new_status.value;
+            value_changed = true;
+        }
+    } else {
+        // Toggle button and lock status
+        if (new_status.value && !current_status.locked) {
+            current_status.locked = true;
+            current_status.value = !current_status.value;
+            value_changed = true;
+        }
+
+        // Unlock button ready for next press
+        if (!new_status.value && current_status.locked) {
+            current_status.locked = false;
+        }
+    }
+
+    if (!value_changed) {
+        return;
+    }
+
+    if (is_configuring) {
+        TriggerOnChange(DeviceTriggerType::KeyboardModdifier);
+        return;
+    }
+
+    switch (index) {
+    case Settings::NativeKeyboard::LeftControl:
+    case Settings::NativeKeyboard::RightControl:
+        device_status.keyboard_moddifier_state.control.Assign(current_status.value);
+        break;
+    case Settings::NativeKeyboard::LeftShift:
+    case Settings::NativeKeyboard::RightShift:
+        device_status.keyboard_moddifier_state.shift.Assign(current_status.value);
+        break;
+    case Settings::NativeKeyboard::LeftAlt:
+        device_status.keyboard_moddifier_state.left_alt.Assign(current_status.value);
+        break;
+    case Settings::NativeKeyboard::RightAlt:
+        device_status.keyboard_moddifier_state.right_alt.Assign(current_status.value);
+        break;
+    case Settings::NativeKeyboard::CapsLock:
+        device_status.keyboard_moddifier_state.caps_lock.Assign(current_status.value);
+        break;
+    case Settings::NativeKeyboard::ScrollLock:
+        device_status.keyboard_moddifier_state.scroll_lock.Assign(current_status.value);
+        break;
+    case Settings::NativeKeyboard::NumLock:
+        device_status.keyboard_moddifier_state.num_lock.Assign(current_status.value);
+        break;
+    }
+
+    TriggerOnChange(DeviceTriggerType::KeyboardModdifier);
+}
+
+void EmulatedDevices::SetMouseButton(Common::Input::CallbackStatus callback, std::size_t index) {
+    if (index >= device_status.mouse_button_values.size()) {
+        return;
+    }
+    std::lock_guard lock{mutex};
+    bool value_changed = false;
+    const auto new_status = TransformToButton(callback);
+    auto& current_status = device_status.mouse_button_values[index];
+    current_status.toggle = new_status.toggle;
+
+    // Update button status with current
+    if (!current_status.toggle) {
+        current_status.locked = false;
+        if (current_status.value != new_status.value) {
+            current_status.value = new_status.value;
+            value_changed = true;
+        }
+    } else {
+        // Toggle button and lock status
+        if (new_status.value && !current_status.locked) {
+            current_status.locked = true;
+            current_status.value = !current_status.value;
+            value_changed = true;
+        }
+
+        // Unlock button ready for next press
+        if (!new_status.value && current_status.locked) {
+            current_status.locked = false;
+        }
+    }
+
+    if (!value_changed) {
+        return;
+    }
+
+    if (is_configuring) {
+        TriggerOnChange(DeviceTriggerType::Mouse);
+        return;
+    }
+
+    switch (index) {
+    case Settings::NativeMouseButton::Left:
+        device_status.mouse_button_state.left.Assign(current_status.value);
+        break;
+    case Settings::NativeMouseButton::Right:
+        device_status.mouse_button_state.right.Assign(current_status.value);
+        break;
+    case Settings::NativeMouseButton::Middle:
+        device_status.mouse_button_state.middle.Assign(current_status.value);
+        break;
+    case Settings::NativeMouseButton::Forward:
+        device_status.mouse_button_state.forward.Assign(current_status.value);
+        break;
+    case Settings::NativeMouseButton::Back:
+        device_status.mouse_button_state.back.Assign(current_status.value);
+        break;
+    }
+
+    TriggerOnChange(DeviceTriggerType::Mouse);
+}
+
+void EmulatedDevices::SetMouseAnalog(Common::Input::CallbackStatus callback, std::size_t index) {
+    if (index >= device_status.mouse_analog_values.size()) {
+        return;
+    }
+    std::lock_guard lock{mutex};
+    const auto analog_value = TransformToAnalog(callback);
+
+    device_status.mouse_analog_values[index] = analog_value;
+
+    if (is_configuring) {
+        device_status.mouse_position_state = {};
+        TriggerOnChange(DeviceTriggerType::Mouse);
+        return;
+    }
+
+    switch (index) {
+    case Settings::NativeMouseWheel::X:
+        device_status.mouse_wheel_state.x = static_cast<s32>(analog_value.value);
+        break;
+    case Settings::NativeMouseWheel::Y:
+        device_status.mouse_wheel_state.y = static_cast<s32>(analog_value.value);
+        break;
+    }
+
+    TriggerOnChange(DeviceTriggerType::Mouse);
+}
+
+void EmulatedDevices::SetMouseStick(Common::Input::CallbackStatus callback) {
+    std::lock_guard lock{mutex};
+    const auto touch_value = TransformToTouch(callback);
+
+    device_status.mouse_stick_value = touch_value;
+
+    if (is_configuring) {
+        device_status.mouse_position_state = {};
+        TriggerOnChange(DeviceTriggerType::Mouse);
+        return;
+    }
+
+    device_status.mouse_position_state.x = touch_value.x.value;
+    device_status.mouse_position_state.y = touch_value.y.value;
+
+    TriggerOnChange(DeviceTriggerType::Mouse);
+}
+
+KeyboardValues EmulatedDevices::GetKeyboardValues() const {
+    return device_status.keyboard_values;
+}
+
+KeyboardModifierValues EmulatedDevices::GetKeyboardModdifierValues() const {
+    return device_status.keyboard_moddifier_values;
+}
+
+MouseButtonValues EmulatedDevices::GetMouseButtonsValues() const {
+    return device_status.mouse_button_values;
+}
+
+KeyboardKey EmulatedDevices::GetKeyboard() const {
+    return device_status.keyboard_state;
+}
+
+KeyboardModifier EmulatedDevices::GetKeyboardModifier() const {
+    return device_status.keyboard_moddifier_state;
+}
+
+MouseButton EmulatedDevices::GetMouseButtons() const {
+    return device_status.mouse_button_state;
+}
+
+MousePosition EmulatedDevices::GetMousePosition() const {
+    return device_status.mouse_position_state;
+}
+
+AnalogStickState EmulatedDevices::GetMouseWheel() const {
+    return device_status.mouse_wheel_state;
+}
+
+void EmulatedDevices::TriggerOnChange(DeviceTriggerType type) {
+    for (const auto& poller_pair : callback_list) {
+        const InterfaceUpdateCallback& poller = poller_pair.second;
+        if (poller.on_change) {
+            poller.on_change(type);
+        }
+    }
+}
+
+int EmulatedDevices::SetCallback(InterfaceUpdateCallback update_callback) {
+    std::lock_guard lock{mutex};
+    callback_list.insert_or_assign(last_callback_key, update_callback);
+    return last_callback_key++;
+}
+
+void EmulatedDevices::DeleteCallback(int key) {
+    std::lock_guard lock{mutex};
+    const auto& iterator = callback_list.find(key);
+    if (iterator == callback_list.end()) {
+        LOG_ERROR(Input, "Tried to delete non-existent callback {}", key);
+        return;
+    }
+    callback_list.erase(iterator);
+}
+} // namespace Core::HID