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-rw-r--r--src/input_common/drivers/udp_client.cpp364
1 files changed, 364 insertions, 0 deletions
diff --git a/src/input_common/drivers/udp_client.cpp b/src/input_common/drivers/udp_client.cpp
new file mode 100644
index 000000000..6fcc3a01b
--- /dev/null
+++ b/src/input_common/drivers/udp_client.cpp
@@ -0,0 +1,364 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <random>
+#include <boost/asio.hpp>
+
+#include "common/logging/log.h"
+#include "common/param_package.h"
+#include "common/settings.h"
+#include "input_common/drivers/udp_client.h"
+#include "input_common/helpers/udp_protocol.h"
+
+using boost::asio::ip::udp;
+
+namespace InputCommon::CemuhookUDP {
+
+struct SocketCallback {
+ std::function<void(Response::Version)> version;
+ std::function<void(Response::PortInfo)> port_info;
+ std::function<void(Response::PadData)> pad_data;
+};
+
+class Socket {
+public:
+ using clock = std::chrono::system_clock;
+
+ explicit Socket(const std::string& host, u16 port, SocketCallback callback_)
+ : callback(std::move(callback_)), timer(io_service),
+ socket(io_service, udp::endpoint(udp::v4(), 0)), client_id(GenerateRandomClientId()) {
+ boost::system::error_code ec{};
+ auto ipv4 = boost::asio::ip::make_address_v4(host, ec);
+ if (ec.value() != boost::system::errc::success) {
+ LOG_ERROR(Input, "Invalid IPv4 address \"{}\" provided to socket", host);
+ ipv4 = boost::asio::ip::address_v4{};
+ }
+
+ send_endpoint = {udp::endpoint(ipv4, port)};
+ }
+
+ void Stop() {
+ io_service.stop();
+ }
+
+ void Loop() {
+ io_service.run();
+ }
+
+ void StartSend(const clock::time_point& from) {
+ timer.expires_at(from + std::chrono::seconds(3));
+ timer.async_wait([this](const boost::system::error_code& error) { HandleSend(error); });
+ }
+
+ void StartReceive() {
+ socket.async_receive_from(
+ boost::asio::buffer(receive_buffer), receive_endpoint,
+ [this](const boost::system::error_code& error, std::size_t bytes_transferred) {
+ HandleReceive(error, bytes_transferred);
+ });
+ }
+
+private:
+ u32 GenerateRandomClientId() const {
+ std::random_device device;
+ return device();
+ }
+
+ void HandleReceive(const boost::system::error_code&, std::size_t bytes_transferred) {
+ if (auto type = Response::Validate(receive_buffer.data(), bytes_transferred)) {
+ switch (*type) {
+ case Type::Version: {
+ Response::Version version;
+ std::memcpy(&version, &receive_buffer[sizeof(Header)], sizeof(Response::Version));
+ callback.version(std::move(version));
+ break;
+ }
+ case Type::PortInfo: {
+ Response::PortInfo port_info;
+ std::memcpy(&port_info, &receive_buffer[sizeof(Header)],
+ sizeof(Response::PortInfo));
+ callback.port_info(std::move(port_info));
+ break;
+ }
+ case Type::PadData: {
+ Response::PadData pad_data;
+ std::memcpy(&pad_data, &receive_buffer[sizeof(Header)], sizeof(Response::PadData));
+ callback.pad_data(std::move(pad_data));
+ break;
+ }
+ }
+ }
+ StartReceive();
+ }
+
+ void HandleSend(const boost::system::error_code&) {
+ boost::system::error_code _ignored{};
+ // Send a request for getting port info for the pad
+ const Request::PortInfo port_info{4, {0, 1, 2, 3}};
+ const auto port_message = Request::Create(port_info, client_id);
+ std::memcpy(&send_buffer1, &port_message, PORT_INFO_SIZE);
+ socket.send_to(boost::asio::buffer(send_buffer1), send_endpoint, {}, _ignored);
+
+ // Send a request for getting pad data for the pad
+ const Request::PadData pad_data{
+ Request::PadData::Flags::AllPorts,
+ 0,
+ EMPTY_MAC_ADDRESS,
+ };
+ const auto pad_message = Request::Create(pad_data, client_id);
+ std::memcpy(send_buffer2.data(), &pad_message, PAD_DATA_SIZE);
+ socket.send_to(boost::asio::buffer(send_buffer2), send_endpoint, {}, _ignored);
+ StartSend(timer.expiry());
+ }
+
+ SocketCallback callback;
+ boost::asio::io_service io_service;
+ boost::asio::basic_waitable_timer<clock> timer;
+ udp::socket socket;
+
+ const u32 client_id;
+
+ static constexpr std::size_t PORT_INFO_SIZE = sizeof(Message<Request::PortInfo>);
+ static constexpr std::size_t PAD_DATA_SIZE = sizeof(Message<Request::PadData>);
+ std::array<u8, PORT_INFO_SIZE> send_buffer1;
+ std::array<u8, PAD_DATA_SIZE> send_buffer2;
+ udp::endpoint send_endpoint;
+
+ std::array<u8, MAX_PACKET_SIZE> receive_buffer;
+ udp::endpoint receive_endpoint;
+};
+
+static void SocketLoop(Socket* socket) {
+ socket->StartReceive();
+ socket->StartSend(Socket::clock::now());
+ socket->Loop();
+}
+
+UDPClient::UDPClient(const std::string& input_engine_) : InputEngine(input_engine_) {
+ LOG_INFO(Input, "Udp Initialization started");
+ ReloadSockets();
+}
+
+UDPClient::~UDPClient() {
+ Reset();
+}
+
+UDPClient::ClientConnection::ClientConnection() = default;
+
+UDPClient::ClientConnection::~ClientConnection() = default;
+
+void UDPClient::ReloadSockets() {
+ Reset();
+
+ std::stringstream servers_ss(Settings::values.udp_input_servers.GetValue());
+ std::string server_token;
+ std::size_t client = 0;
+ while (std::getline(servers_ss, server_token, ',')) {
+ if (client == MAX_UDP_CLIENTS) {
+ break;
+ }
+ std::stringstream server_ss(server_token);
+ std::string token;
+ std::getline(server_ss, token, ':');
+ std::string udp_input_address = token;
+ std::getline(server_ss, token, ':');
+ char* temp;
+ const u16 udp_input_port = static_cast<u16>(std::strtol(token.c_str(), &temp, 0));
+ if (*temp != '\0') {
+ LOG_ERROR(Input, "Port number is not valid {}", token);
+ continue;
+ }
+
+ const std::size_t client_number = GetClientNumber(udp_input_address, udp_input_port);
+ if (client_number != MAX_UDP_CLIENTS) {
+ LOG_ERROR(Input, "Duplicated UDP servers found");
+ continue;
+ }
+ StartCommunication(client++, udp_input_address, udp_input_port);
+ }
+}
+
+std::size_t UDPClient::GetClientNumber(std::string_view host, u16 port) const {
+ for (std::size_t client = 0; client < clients.size(); client++) {
+ if (clients[client].active == -1) {
+ continue;
+ }
+ if (clients[client].host == host && clients[client].port == port) {
+ return client;
+ }
+ }
+ return MAX_UDP_CLIENTS;
+}
+
+void UDPClient::OnVersion([[maybe_unused]] Response::Version data) {
+ LOG_TRACE(Input, "Version packet received: {}", data.version);
+}
+
+void UDPClient::OnPortInfo([[maybe_unused]] Response::PortInfo data) {
+ LOG_TRACE(Input, "PortInfo packet received: {}", data.model);
+}
+
+void UDPClient::OnPadData(Response::PadData data, std::size_t client) {
+ const std::size_t pad_index = (client * PADS_PER_CLIENT) + data.info.id;
+
+ if (pad_index >= pads.size()) {
+ LOG_ERROR(Input, "Invalid pad id {}", data.info.id);
+ return;
+ }
+
+ LOG_TRACE(Input, "PadData packet received");
+ if (data.packet_counter == pads[pad_index].packet_sequence) {
+ LOG_WARNING(
+ Input,
+ "PadData packet dropped because its stale info. Current count: {} Packet count: {}",
+ pads[pad_index].packet_sequence, data.packet_counter);
+ pads[pad_index].connected = false;
+ return;
+ }
+
+ clients[client].active = 1;
+ pads[pad_index].connected = true;
+ pads[pad_index].packet_sequence = data.packet_counter;
+
+ const auto now = std::chrono::steady_clock::now();
+ const auto time_difference = static_cast<u64>(
+ std::chrono::duration_cast<std::chrono::microseconds>(now - pads[pad_index].last_update)
+ .count());
+ pads[pad_index].last_update = now;
+
+ // Gyroscope values are not it the correct scale from better joy.
+ // Dividing by 312 allows us to make one full turn = 1 turn
+ // This must be a configurable valued called sensitivity
+ const float gyro_scale = 1.0f / 312.0f;
+
+ const BasicMotion motion{
+ .gyro_x = data.gyro.pitch * gyro_scale,
+ .gyro_y = data.gyro.roll * gyro_scale,
+ .gyro_z = -data.gyro.yaw * gyro_scale,
+ .accel_x = data.accel.x,
+ .accel_y = -data.accel.z,
+ .accel_z = data.accel.y,
+ .delta_timestamp = time_difference,
+ };
+ const PadIdentifier identifier = GetPadIdentifier(pad_index);
+ SetMotion(identifier, 0, motion);
+}
+
+void UDPClient::StartCommunication(std::size_t client, const std::string& host, u16 port) {
+ SocketCallback callback{[this](Response::Version version) { OnVersion(version); },
+ [this](Response::PortInfo info) { OnPortInfo(info); },
+ [this, client](Response::PadData data) { OnPadData(data, client); }};
+ LOG_INFO(Input, "Starting communication with UDP input server on {}:{}", host, port);
+ clients[client].host = host;
+ clients[client].port = port;
+ clients[client].active = 0;
+ clients[client].socket = std::make_unique<Socket>(host, port, callback);
+ clients[client].thread = std::thread{SocketLoop, clients[client].socket.get()};
+ for (std::size_t index = 0; index < PADS_PER_CLIENT; ++index) {
+ const PadIdentifier identifier = GetPadIdentifier(client * PADS_PER_CLIENT + index);
+ PreSetController(identifier);
+ }
+}
+
+const PadIdentifier UDPClient::GetPadIdentifier(std::size_t pad_index) const {
+ const std::size_t client = pad_index / PADS_PER_CLIENT;
+ return {
+ .guid = Common::UUID{clients[client].host},
+ .port = static_cast<std::size_t>(clients[client].port),
+ .pad = pad_index,
+ };
+}
+
+void UDPClient::Reset() {
+ for (auto& client : clients) {
+ if (client.thread.joinable()) {
+ client.active = -1;
+ client.socket->Stop();
+ client.thread.join();
+ }
+ }
+}
+
+void TestCommunication(const std::string& host, u16 port,
+ const std::function<void()>& success_callback,
+ const std::function<void()>& failure_callback) {
+ std::thread([=] {
+ Common::Event success_event;
+ SocketCallback callback{
+ .version = [](Response::Version) {},
+ .port_info = [](Response::PortInfo) {},
+ .pad_data = [&](Response::PadData) { success_event.Set(); },
+ };
+ Socket socket{host, port, std::move(callback)};
+ std::thread worker_thread{SocketLoop, &socket};
+ const bool result =
+ success_event.WaitUntil(std::chrono::steady_clock::now() + std::chrono::seconds(10));
+ socket.Stop();
+ worker_thread.join();
+ if (result) {
+ success_callback();
+ } else {
+ failure_callback();
+ }
+ }).detach();
+}
+
+CalibrationConfigurationJob::CalibrationConfigurationJob(
+ const std::string& host, u16 port, std::function<void(Status)> status_callback,
+ std::function<void(u16, u16, u16, u16)> data_callback) {
+
+ std::thread([=, this] {
+ Status current_status{Status::Initialized};
+ SocketCallback callback{
+ [](Response::Version) {}, [](Response::PortInfo) {},
+ [&](Response::PadData data) {
+ static constexpr u16 CALIBRATION_THRESHOLD = 100;
+ static constexpr u16 MAX_VALUE = UINT16_MAX;
+
+ if (current_status == Status::Initialized) {
+ // Receiving data means the communication is ready now
+ current_status = Status::Ready;
+ status_callback(current_status);
+ }
+ const auto& touchpad_0 = data.touch[0];
+ if (touchpad_0.is_active == 0) {
+ return;
+ }
+ LOG_DEBUG(Input, "Current touch: {} {}", touchpad_0.x, touchpad_0.y);
+ const u16 min_x = std::min(MAX_VALUE, static_cast<u16>(touchpad_0.x));
+ const u16 min_y = std::min(MAX_VALUE, static_cast<u16>(touchpad_0.y));
+ if (current_status == Status::Ready) {
+ // First touch - min data (min_x/min_y)
+ current_status = Status::Stage1Completed;
+ status_callback(current_status);
+ }
+ if (touchpad_0.x - min_x > CALIBRATION_THRESHOLD &&
+ touchpad_0.y - min_y > CALIBRATION_THRESHOLD) {
+ // Set the current position as max value and finishes configuration
+ const u16 max_x = touchpad_0.x;
+ const u16 max_y = touchpad_0.y;
+ current_status = Status::Completed;
+ data_callback(min_x, min_y, max_x, max_y);
+ status_callback(current_status);
+
+ complete_event.Set();
+ }
+ }};
+ Socket socket{host, port, std::move(callback)};
+ std::thread worker_thread{SocketLoop, &socket};
+ complete_event.Wait();
+ socket.Stop();
+ worker_thread.join();
+ }).detach();
+}
+
+CalibrationConfigurationJob::~CalibrationConfigurationJob() {
+ Stop();
+}
+
+void CalibrationConfigurationJob::Stop() {
+ complete_event.Set();
+}
+
+} // namespace InputCommon::CemuhookUDP