1 files changed, 140 insertions, 0 deletions
diff --git a/src/hid_core/resources/abstracted_pad/abstract_nfc_handler.cpp b/src/hid_core/resources/abstracted_pad/abstract_nfc_handler.cpp
new file mode 100644
index 000000000..bd9b79333
--- /dev/null
+++ b/src/hid_core/resources/abstracted_pad/abstract_nfc_handler.cpp
@@ -0,0 +1,140 @@
+// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "hid_core/hid_result.h"
+#include "hid_core/resources/abstracted_pad/abstract_nfc_handler.h"
+#include "hid_core/resources/abstracted_pad/abstract_pad_holder.h"
+#include "hid_core/resources/abstracted_pad/abstract_properties_handler.h"
+#include "hid_core/resources/npad/npad_types.h"
+
+namespace Service::HID {
+
+NpadAbstractNfcHandler::NpadAbstractNfcHandler() {}
+
+NpadAbstractNfcHandler::~NpadAbstractNfcHandler() = default;
+
+void NpadAbstractNfcHandler::SetAbstractPadHolder(NpadAbstractedPadHolder* holder) {
+    abstract_pad_holder = holder;
+}
+
+void NpadAbstractNfcHandler::SetPropertiesHandler(NpadAbstractPropertiesHandler* handler) {
+    properties_handler = handler;
+}
+
+Result NpadAbstractNfcHandler::IncrementRefCounter() {
+    if (ref_counter == std::numeric_limits<s32>::max() - 1) {
+        return ResultNpadHandlerOverflow;
+    }
+    ref_counter++;
+    return ResultSuccess;
+}
+
+Result NpadAbstractNfcHandler::DecrementRefCounter() {
+    if (ref_counter == 0) {
+        return ResultNpadHandlerNotInitialized;
+    }
+    ref_counter--;
+    return ResultSuccess;
+}
+
+void NpadAbstractNfcHandler::UpdateNfcState() {
+    std::array<IAbstractedPad*, 5> abstract_pads{};
+    const std::size_t count = properties_handler->GetAbstractedPads(abstract_pads);
+
+    if (count == 0) {
+        if (sensor_state == NpadNfcState::Active) {
+            nfc_activate_event->Signal();
+        }
+        if (sensor_state == NpadNfcState::Unavailable) {
+            return;
+        }
+        sensor_state = NpadNfcState::Unavailable;
+        input_event->Signal();
+        return;
+    }
+
+    bool is_found{};
+    for (std::size_t i = 0; i < count; i++) {
+        auto* abstract_pad = abstract_pads[i];
+        if (!abstract_pad->internal_flags.is_connected) {
+            continue;
+        }
+        if (!abstract_pad->disabled_feature_set.has_nfc) {
+            continue;
+        }
+        is_found = true;
+        xcd_handle = 0;
+    }
+
+    if (is_found) {
+        if (sensor_state == NpadNfcState::Active) {
+            return;
+        }
+        if (sensor_state == NpadNfcState::Available) {
+            return;
+        }
+        sensor_state = NpadNfcState::Available;
+        input_event->Signal();
+        return;
+    }
+
+    if (sensor_state == NpadNfcState::Active) {
+        nfc_activate_event->Signal();
+    }
+    if (sensor_state == NpadNfcState::Unavailable) {
+        return;
+    }
+    sensor_state = NpadNfcState::Unavailable;
+    input_event->Signal();
+    return;
+}
+
+bool NpadAbstractNfcHandler::HasNfcSensor() {
+    return sensor_state != NpadNfcState::Unavailable;
+}
+
+bool NpadAbstractNfcHandler::IsNfcActivated() {
+    return sensor_state == NpadNfcState::Active;
+}
+
+Result NpadAbstractNfcHandler::GetAcquireNfcActivateEventHandle(
+    Kernel::KReadableEvent** out_event) {
+    *out_event = &nfc_activate_event->GetReadableEvent();
+    return ResultSuccess;
+}
+
+void NpadAbstractNfcHandler::SetInputEvent(Kernel::KEvent* event) {
+    input_event = event;
+}
+
+Result NpadAbstractNfcHandler::ActivateNfc(bool is_enabled) {
+    if (sensor_state == NpadNfcState::Active) {
+        return ResultNfcIsNotReady;
+    }
+
+    NpadNfcState new_state = NpadNfcState::Available;
+    if (is_enabled) {
+        new_state = NpadNfcState::Active;
+    }
+    if (sensor_state != new_state) {
+        sensor_state = new_state;
+        nfc_activate_event->Signal();
+    }
+    return ResultSuccess;
+}
+
+Result NpadAbstractNfcHandler::GetXcdHandleWithNfc(u64& out_xcd_handle) const {
+    if (sensor_state == NpadNfcState::Unavailable) {
+        return ResultNfcIsNotReady;
+    }
+    if (xcd_handle == 0) {
+        return ResultNfcXcdHandleIsNotInitialized;
+    }
+
+    out_xcd_handle = xcd_handle;
+    return ResultSuccess;
+}
+
+} // namespace Service::HID