diff options
Diffstat (limited to 'src/core/hle/service/nfc/nfc_device.cpp')
| -rw-r--r-- | src/core/hle/service/nfc/nfc_device.cpp | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/src/core/hle/service/nfc/nfc_device.cpp b/src/core/hle/service/nfc/nfc_device.cpp new file mode 100644 index 000000000..4d514cf5f --- /dev/null +++ b/src/core/hle/service/nfc/nfc_device.cpp @@ -0,0 +1,197 @@ +// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "common/input.h" +#include "common/logging/log.h" +#include "core/core.h" +#include "core/hid/emulated_controller.h" +#include "core/hid/hid_core.h" +#include "core/hid/hid_types.h" +#include "core/hle/ipc_helpers.h" +#include "core/hle/kernel/k_event.h" +#include "core/hle/service/nfc/nfc_device.h" +#include "core/hle/service/nfc/nfc_result.h" +#include "core/hle/service/nfc/nfc_user.h" + +namespace Service::NFC { +NfcDevice::NfcDevice(Core::HID::NpadIdType npad_id_, Core::System& system_, + KernelHelpers::ServiceContext& service_context_, + Kernel::KEvent* availability_change_event_) + : npad_id{npad_id_}, system{system_}, service_context{service_context_}, + availability_change_event{availability_change_event_} { + activate_event = service_context.CreateEvent("IUser:NFCActivateEvent"); + deactivate_event = service_context.CreateEvent("IUser:NFCDeactivateEvent"); + npad_device = system.HIDCore().GetEmulatedController(npad_id); + + Core::HID::ControllerUpdateCallback engine_callback{ + .on_change = [this](Core::HID::ControllerTriggerType type) { NpadUpdate(type); }, + .is_npad_service = false, + }; + is_controller_set = true; + callback_key = npad_device->SetCallback(engine_callback); +} + +NfcDevice::~NfcDevice() { + activate_event->Close(); + deactivate_event->Close(); + if (!is_controller_set) { + return; + } + npad_device->DeleteCallback(callback_key); + is_controller_set = false; +}; + +void NfcDevice::NpadUpdate(Core::HID::ControllerTriggerType type) { + if (type == Core::HID::ControllerTriggerType::Connected || + type == Core::HID::ControllerTriggerType::Disconnected) { + availability_change_event->Signal(); + return; + } + + if (type != Core::HID::ControllerTriggerType::Nfc) { + return; + } + + if (!npad_device->IsConnected()) { + return; + } + + const auto nfc_status = npad_device->GetNfc(); + switch (nfc_status.state) { + case Common::Input::NfcState::NewAmiibo: + LoadNfcTag(nfc_status.data); + break; + case Common::Input::NfcState::AmiiboRemoved: + if (device_state != NFP::DeviceState::SearchingForTag) { + CloseNfcTag(); + } + break; + default: + break; + } +} + +bool NfcDevice::LoadNfcTag(std::span<const u8> data) { + if (device_state != NFP::DeviceState::SearchingForTag) { + LOG_ERROR(Service_NFC, "Game is not looking for nfc tag, current state {}", device_state); + return false; + } + + if (data.size() != sizeof(NFP::EncryptedNTAG215File)) { + LOG_ERROR(Service_NFC, "Not an amiibo, size={}", data.size()); + return false; + } + + memcpy(&encrypted_tag_data, data.data(), sizeof(NFP::EncryptedNTAG215File)); + + device_state = NFP::DeviceState::TagFound; + deactivate_event->GetReadableEvent().Clear(); + activate_event->Signal(); + return true; +} + +void NfcDevice::CloseNfcTag() { + LOG_INFO(Service_NFC, "Remove nfc tag"); + + device_state = NFP::DeviceState::TagRemoved; + encrypted_tag_data = {}; + activate_event->GetReadableEvent().Clear(); + deactivate_event->Signal(); +} + +Kernel::KReadableEvent& NfcDevice::GetActivateEvent() const { + return activate_event->GetReadableEvent(); +} + +Kernel::KReadableEvent& NfcDevice::GetDeactivateEvent() const { + return deactivate_event->GetReadableEvent(); +} + +void NfcDevice::Initialize() { + device_state = + npad_device->HasNfc() ? NFP::DeviceState::Initialized : NFP::DeviceState::Unavailable; + encrypted_tag_data = {}; +} + +void NfcDevice::Finalize() { + if (device_state == NFP::DeviceState::SearchingForTag || + device_state == NFP::DeviceState::TagRemoved) { + StopDetection(); + } + device_state = NFP::DeviceState::Unavailable; +} + +Result NfcDevice::StartDetection(s32 protocol_) { + if (device_state != NFP::DeviceState::Initialized && + device_state != NFP::DeviceState::TagRemoved) { + LOG_ERROR(Service_NFC, "Wrong device state {}", device_state); + return WrongDeviceState; + } + + if (!npad_device->SetPollingMode(Common::Input::PollingMode::NFC)) { + LOG_ERROR(Service_NFC, "Nfc not supported"); + return NfcDisabled; + } + + device_state = NFP::DeviceState::SearchingForTag; + protocol = protocol_; + return ResultSuccess; +} + +Result NfcDevice::StopDetection() { + npad_device->SetPollingMode(Common::Input::PollingMode::Active); + + if (device_state == NFP::DeviceState::Initialized) { + return ResultSuccess; + } + + if (device_state == NFP::DeviceState::TagFound || + device_state == NFP::DeviceState::TagMounted) { + CloseNfcTag(); + return ResultSuccess; + } + if (device_state == NFP::DeviceState::SearchingForTag || + device_state == NFP::DeviceState::TagRemoved) { + device_state = NFP::DeviceState::Initialized; + return ResultSuccess; + } + + LOG_ERROR(Service_NFC, "Wrong device state {}", device_state); + return WrongDeviceState; +} + +Result NfcDevice::GetTagInfo(NFP::TagInfo& tag_info) const { + if (device_state != NFP::DeviceState::TagFound && + device_state != NFP::DeviceState::TagMounted) { + LOG_ERROR(Service_NFC, "Wrong device state {}", device_state); + if (device_state == NFP::DeviceState::TagRemoved) { + return TagRemoved; + } + return WrongDeviceState; + } + + // Protocol and tag type may change here + tag_info = { + .uuid = encrypted_tag_data.uuid.uid, + .uuid_length = static_cast<u8>(encrypted_tag_data.uuid.uid.size()), + .protocol = NFP::TagProtocol::TypeA, + .tag_type = NFP::TagType::Type2, + }; + + return ResultSuccess; +} + +u64 NfcDevice::GetHandle() const { + // Generate a handle based of the npad id + return static_cast<u64>(npad_id); +} + +NFP::DeviceState NfcDevice::GetCurrentState() const { + return device_state; +} + +Core::HID::NpadIdType NfcDevice::GetNpadId() const { + return npad_id; +} + +} // namespace Service::NFC |