1 files changed, 361 insertions, 0 deletions

diff --git a/src/input_common/input_engine.cpp b/src/input_common/input_engine.cpp
new file mode 100644
index 000000000..1534f24b0
--- /dev/null
+++ b/src/input_common/input_engine.cpp
@@ -0,0 +1,361 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included
+
+#include "common/logging/log.h"
+#include "common/param_package.h"
+#include "input_common/input_engine.h"
+
+namespace InputCommon {
+
+void InputEngine::PreSetController(const PadIdentifier& identifier) {
+    std::lock_guard lock{mutex};
+    if (!controller_list.contains(identifier)) {
+        controller_list.insert_or_assign(identifier, ControllerData{});
+    }
+}
+
+void InputEngine::PreSetButton(const PadIdentifier& identifier, int button) {
+    std::lock_guard lock{mutex};
+    ControllerData& controller = controller_list.at(identifier);
+    if (!controller.buttons.contains(button)) {
+        controller.buttons.insert_or_assign(button, false);
+    }
+}
+
+void InputEngine::PreSetHatButton(const PadIdentifier& identifier, int button) {
+    std::lock_guard lock{mutex};
+    ControllerData& controller = controller_list.at(identifier);
+    if (!controller.hat_buttons.contains(button)) {
+        controller.hat_buttons.insert_or_assign(button, u8{0});
+    }
+}
+
+void InputEngine::PreSetAxis(const PadIdentifier& identifier, int axis) {
+    std::lock_guard lock{mutex};
+    ControllerData& controller = controller_list.at(identifier);
+    if (!controller.axes.contains(axis)) {
+        controller.axes.insert_or_assign(axis, 0.0f);
+    }
+}
+
+void InputEngine::PreSetMotion(const PadIdentifier& identifier, int motion) {
+    std::lock_guard lock{mutex};
+    ControllerData& controller = controller_list.at(identifier);
+    if (!controller.motions.contains(motion)) {
+        controller.motions.insert_or_assign(motion, BasicMotion{});
+    }
+}
+
+void InputEngine::SetButton(const PadIdentifier& identifier, int button, bool value) {
+    {
+        std::lock_guard lock{mutex};
+        ControllerData& controller = controller_list.at(identifier);
+        if (!configuring) {
+            controller.buttons.insert_or_assign(button, value);
+        }
+    }
+    TriggerOnButtonChange(identifier, button, value);
+}
+
+void InputEngine::SetHatButton(const PadIdentifier& identifier, int button, u8 value) {
+    {
+        std::lock_guard lock{mutex};
+        ControllerData& controller = controller_list.at(identifier);
+        if (!configuring) {
+            controller.hat_buttons.insert_or_assign(button, value);
+        }
+    }
+    TriggerOnHatButtonChange(identifier, button, value);
+}
+
+void InputEngine::SetAxis(const PadIdentifier& identifier, int axis, f32 value) {
+    {
+        std::lock_guard lock{mutex};
+        ControllerData& controller = controller_list.at(identifier);
+        if (!configuring) {
+            controller.axes.insert_or_assign(axis, value);
+        }
+    }
+    TriggerOnAxisChange(identifier, axis, value);
+}
+
+void InputEngine::SetBattery(const PadIdentifier& identifier, BatteryLevel value) {
+    {
+        std::lock_guard lock{mutex};
+        ControllerData& controller = controller_list.at(identifier);
+        if (!configuring) {
+            controller.battery = value;
+        }
+    }
+    TriggerOnBatteryChange(identifier, value);
+}
+
+void InputEngine::SetMotion(const PadIdentifier& identifier, int motion, BasicMotion value) {
+    {
+        std::lock_guard lock{mutex};
+        ControllerData& controller = controller_list.at(identifier);
+        if (!configuring) {
+            controller.motions.insert_or_assign(motion, value);
+        }
+    }
+    TriggerOnMotionChange(identifier, motion, value);
+}
+
+bool InputEngine::GetButton(const PadIdentifier& identifier, int button) const {
+    std::lock_guard lock{mutex};
+    if (!controller_list.contains(identifier)) {
+        LOG_ERROR(Input, "Invalid identifier guid={}, pad={}, port={}", identifier.guid.Format(),
+                  identifier.pad, identifier.port);
+        return false;
+    }
+    ControllerData controller = controller_list.at(identifier);
+    if (!controller.buttons.contains(button)) {
+        LOG_ERROR(Input, "Invalid button {}", button);
+        return false;
+    }
+    return controller.buttons.at(button);
+}
+
+bool InputEngine::GetHatButton(const PadIdentifier& identifier, int button, u8 direction) const {
+    std::lock_guard lock{mutex};
+    if (!controller_list.contains(identifier)) {
+        LOG_ERROR(Input, "Invalid identifier guid={}, pad={}, port={}", identifier.guid.Format(),
+                  identifier.pad, identifier.port);
+        return false;
+    }
+    ControllerData controller = controller_list.at(identifier);
+    if (!controller.hat_buttons.contains(button)) {
+        LOG_ERROR(Input, "Invalid hat button {}", button);
+        return false;
+    }
+    return (controller.hat_buttons.at(button) & direction) != 0;
+}
+
+f32 InputEngine::GetAxis(const PadIdentifier& identifier, int axis) const {
+    std::lock_guard lock{mutex};
+    if (!controller_list.contains(identifier)) {
+        LOG_ERROR(Input, "Invalid identifier guid={}, pad={}, port={}", identifier.guid.Format(),
+                  identifier.pad, identifier.port);
+        return 0.0f;
+    }
+    ControllerData controller = controller_list.at(identifier);
+    if (!controller.axes.contains(axis)) {
+        LOG_ERROR(Input, "Invalid axis {}", axis);
+        return 0.0f;
+    }
+    return controller.axes.at(axis);
+}
+
+BatteryLevel InputEngine::GetBattery(const PadIdentifier& identifier) const {
+    std::lock_guard lock{mutex};
+    if (!controller_list.contains(identifier)) {
+        LOG_ERROR(Input, "Invalid identifier guid={}, pad={}, port={}", identifier.guid.Format(),
+                  identifier.pad, identifier.port);
+        return BatteryLevel::Charging;
+    }
+    ControllerData controller = controller_list.at(identifier);
+    return controller.battery;
+}
+
+BasicMotion InputEngine::GetMotion(const PadIdentifier& identifier, int motion) const {
+    std::lock_guard lock{mutex};
+    if (!controller_list.contains(identifier)) {
+        LOG_ERROR(Input, "Invalid identifier guid={}, pad={}, port={}", identifier.guid.Format(),
+                  identifier.pad, identifier.port);
+        return {};
+    }
+    ControllerData controller = controller_list.at(identifier);
+    return controller.motions.at(motion);
+}
+
+void InputEngine::ResetButtonState() {
+    for (std::pair<PadIdentifier, ControllerData> controller : controller_list) {
+        for (std::pair<int, bool> button : controller.second.buttons) {
+            SetButton(controller.first, button.first, false);
+        }
+        for (std::pair<int, bool> button : controller.second.hat_buttons) {
+            SetHatButton(controller.first, button.first, false);
+        }
+    }
+}
+
+void InputEngine::ResetAnalogState() {
+    for (std::pair<PadIdentifier, ControllerData> controller : controller_list) {
+        for (std::pair<int, float> axis : controller.second.axes) {
+            SetAxis(controller.first, axis.first, 0.0);
+        }
+    }
+}
+
+void InputEngine::TriggerOnButtonChange(const PadIdentifier& identifier, int button, bool value) {
+    std::lock_guard lock{mutex_callback};
+    for (const std::pair<int, InputIdentifier> poller_pair : callback_list) {
+        const InputIdentifier& poller = poller_pair.second;
+        if (!IsInputIdentifierEqual(poller, identifier, EngineInputType::Button, button)) {
+            continue;
+        }
+        if (poller.callback.on_change) {
+            poller.callback.on_change();
+        }
+    }
+    if (!configuring || !mapping_callback.on_data) {
+        return;
+    }
+    if (value == GetButton(identifier, button)) {
+        return;
+    }
+    mapping_callback.on_data(MappingData{
+        .engine = GetEngineName(),
+        .pad = identifier,
+        .type = EngineInputType::Button,
+        .index = button,
+        .button_value = value,
+    });
+}
+
+void InputEngine::TriggerOnHatButtonChange(const PadIdentifier& identifier, int button, u8 value) {
+    std::lock_guard lock{mutex_callback};
+    for (const std::pair<int, InputIdentifier> poller_pair : callback_list) {
+        const InputIdentifier& poller = poller_pair.second;
+        if (!IsInputIdentifierEqual(poller, identifier, EngineInputType::HatButton, button)) {
+            continue;
+        }
+        if (poller.callback.on_change) {
+            poller.callback.on_change();
+        }
+    }
+    if (!configuring || !mapping_callback.on_data) {
+        return;
+    }
+    for (std::size_t index = 1; index < 0xff; index <<= 1) {
+        bool button_value = (value & index) != 0;
+        if (button_value == GetHatButton(identifier, button, static_cast<u8>(index))) {
+            continue;
+        }
+        mapping_callback.on_data(MappingData{
+            .engine = GetEngineName(),
+            .pad = identifier,
+            .type = EngineInputType::HatButton,
+            .index = button,
+            .hat_name = GetHatButtonName(static_cast<u8>(index)),
+        });
+    }
+}
+
+void InputEngine::TriggerOnAxisChange(const PadIdentifier& identifier, int axis, f32 value) {
+    std::lock_guard lock{mutex_callback};
+    for (const std::pair<int, InputIdentifier> poller_pair : callback_list) {
+        const InputIdentifier& poller = poller_pair.second;
+        if (!IsInputIdentifierEqual(poller, identifier, EngineInputType::Analog, axis)) {
+            continue;
+        }
+        if (poller.callback.on_change) {
+            poller.callback.on_change();
+        }
+    }
+    if (!configuring || !mapping_callback.on_data) {
+        return;
+    }
+    if (std::abs(value - GetAxis(identifier, axis)) < 0.5f) {
+        return;
+    }
+    mapping_callback.on_data(MappingData{
+        .engine = GetEngineName(),
+        .pad = identifier,
+        .type = EngineInputType::Analog,
+        .index = axis,
+        .axis_value = value,
+    });
+}
+
+void InputEngine::TriggerOnBatteryChange(const PadIdentifier& identifier,
+                                         [[maybe_unused]] BatteryLevel value) {
+    std::lock_guard lock{mutex_callback};
+    for (const std::pair<int, InputIdentifier> poller_pair : callback_list) {
+        const InputIdentifier& poller = poller_pair.second;
+        if (!IsInputIdentifierEqual(poller, identifier, EngineInputType::Battery, 0)) {
+            continue;
+        }
+        if (poller.callback.on_change) {
+            poller.callback.on_change();
+        }
+    }
+}
+
+void InputEngine::TriggerOnMotionChange(const PadIdentifier& identifier, int motion,
+                                        BasicMotion value) {
+    std::lock_guard lock{mutex_callback};
+    for (const std::pair<int, InputIdentifier> poller_pair : callback_list) {
+        const InputIdentifier& poller = poller_pair.second;
+        if (!IsInputIdentifierEqual(poller, identifier, EngineInputType::Motion, motion)) {
+            continue;
+        }
+        if (poller.callback.on_change) {
+            poller.callback.on_change();
+        }
+    }
+    if (!configuring || !mapping_callback.on_data) {
+        return;
+    }
+    if (std::abs(value.gyro_x) < 1.0f && std::abs(value.gyro_y) < 1.0f &&
+        std::abs(value.gyro_z) < 1.0f) {
+        return;
+    }
+    mapping_callback.on_data(MappingData{
+        .engine = GetEngineName(),
+        .pad = identifier,
+        .type = EngineInputType::Motion,
+        .index = motion,
+        .motion_value = value,
+    });
+}
+
+bool InputEngine::IsInputIdentifierEqual(const InputIdentifier& input_identifier,
+                                         const PadIdentifier& identifier, EngineInputType type,
+                                         std::size_t index) const {
+    if (input_identifier.type != type) {
+        return false;
+    }
+    if (input_identifier.index != index) {
+        return false;
+    }
+    if (input_identifier.identifier != identifier) {
+        return false;
+    }
+    return true;
+}
+
+void InputEngine::BeginConfiguration() {
+    configuring = true;
+}
+
+void InputEngine::EndConfiguration() {
+    configuring = false;
+}
+
+const std::string& InputEngine::GetEngineName() const {
+    return input_engine;
+}
+
+int InputEngine::SetCallback(InputIdentifier input_identifier) {
+    std::lock_guard lock{mutex_callback};
+    callback_list.insert_or_assign(last_callback_key, input_identifier);
+    return last_callback_key++;
+}
+
+void InputEngine::SetMappingCallback(MappingCallback callback) {
+    std::lock_guard lock{mutex_callback};
+    mapping_callback = std::move(callback);
+}
+
+void InputEngine::DeleteCallback(int key) {
+    std::lock_guard lock{mutex_callback};
+    if (!callback_list.contains(key)) {
+        LOG_ERROR(Input, "Tried to delete non-existent callback {}", key);
+        return;
+    }
+    callback_list.erase(key);
+}
+
+} // namespace InputCommon