284 lines
11 KiB
C++
284 lines
11 KiB
C++
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// Copyright 2018 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <array>
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#include <chrono>
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#include <cstring>
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#include <functional>
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#include <thread>
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#include <boost/asio.hpp>
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#include <boost/bind.hpp>
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#include "common/logging/log.h"
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#include "input_common/udp/client.h"
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#include "input_common/udp/protocol.h"
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using boost::asio::ip::address_v4;
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using boost::asio::ip::udp;
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namespace InputCommon::CemuhookUDP {
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struct SocketCallback {
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std::function<void(Response::Version)> version;
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std::function<void(Response::PortInfo)> port_info;
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std::function<void(Response::PadData)> pad_data;
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};
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class Socket {
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public:
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using clock = std::chrono::system_clock;
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explicit Socket(const std::string& host, u16 port, u8 pad_index, u32 client_id,
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SocketCallback callback)
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: client_id(client_id), timer(io_service),
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send_endpoint(udp::endpoint(address_v4::from_string(host), port)),
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socket(io_service, udp::endpoint(udp::v4(), 0)), pad_index(pad_index),
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callback(std::move(callback)) {}
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void Stop() {
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io_service.stop();
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}
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void Loop() {
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io_service.run();
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}
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void StartSend(const clock::time_point& from) {
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timer.expires_at(from + std::chrono::seconds(3));
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timer.async_wait([this](const boost::system::error_code& error) { HandleSend(error); });
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}
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void StartReceive() {
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socket.async_receive_from(
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boost::asio::buffer(receive_buffer), receive_endpoint,
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[this](const boost::system::error_code& error, std::size_t bytes_transferred) {
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HandleReceive(error, bytes_transferred);
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});
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}
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private:
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void HandleReceive(const boost::system::error_code& error, std::size_t bytes_transferred) {
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if (auto type = Response::Validate(receive_buffer.data(), bytes_transferred)) {
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switch (*type) {
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case Type::Version: {
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Response::Version version;
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std::memcpy(&version, &receive_buffer[sizeof(Header)], sizeof(Response::Version));
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callback.version(std::move(version));
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break;
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}
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case Type::PortInfo: {
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Response::PortInfo port_info;
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std::memcpy(&port_info, &receive_buffer[sizeof(Header)],
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sizeof(Response::PortInfo));
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callback.port_info(std::move(port_info));
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break;
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}
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case Type::PadData: {
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Response::PadData pad_data;
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std::memcpy(&pad_data, &receive_buffer[sizeof(Header)], sizeof(Response::PadData));
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callback.pad_data(std::move(pad_data));
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break;
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}
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}
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}
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StartReceive();
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}
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void HandleSend(const boost::system::error_code& error) {
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// Send a request for getting port info for the pad
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Request::PortInfo port_info{1, {pad_index, 0, 0, 0}};
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auto port_message = Request::Create(port_info, client_id);
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std::memcpy(&send_buffer1, &port_message, PORT_INFO_SIZE);
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std::size_t len = socket.send_to(boost::asio::buffer(send_buffer1), send_endpoint);
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// Send a request for getting pad data for the pad
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Request::PadData pad_data{Request::PadData::Flags::Id, pad_index, EMPTY_MAC_ADDRESS};
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auto pad_message = Request::Create(pad_data, client_id);
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std::memcpy(send_buffer2.data(), &pad_message, PAD_DATA_SIZE);
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std::size_t len2 = socket.send_to(boost::asio::buffer(send_buffer2), send_endpoint);
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StartSend(timer.expiry());
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}
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SocketCallback callback;
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boost::asio::io_service io_service;
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boost::asio::basic_waitable_timer<clock> timer;
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udp::socket socket;
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u32 client_id;
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u8 pad_index;
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static constexpr std::size_t PORT_INFO_SIZE = sizeof(Message<Request::PortInfo>);
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static constexpr std::size_t PAD_DATA_SIZE = sizeof(Message<Request::PadData>);
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std::array<u8, PORT_INFO_SIZE> send_buffer1;
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std::array<u8, PAD_DATA_SIZE> send_buffer2;
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udp::endpoint send_endpoint;
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std::array<u8, MAX_PACKET_SIZE> receive_buffer;
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udp::endpoint receive_endpoint;
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};
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static void SocketLoop(Socket* socket) {
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socket->StartReceive();
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socket->StartSend(Socket::clock::now());
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socket->Loop();
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}
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Client::Client(std::shared_ptr<DeviceStatus> status, const std::string& host, u16 port,
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u8 pad_index, u32 client_id)
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: status(status) {
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StartCommunication(host, port, pad_index, client_id);
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}
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Client::~Client() {
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socket->Stop();
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thread.join();
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}
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void Client::ReloadSocket(const std::string& host, u16 port, u8 pad_index, u32 client_id) {
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socket->Stop();
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thread.join();
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StartCommunication(host, port, pad_index, client_id);
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}
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void Client::OnVersion(Response::Version data) {
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LOG_TRACE(Input, "Version packet received: {}", data.version);
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}
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void Client::OnPortInfo(Response::PortInfo data) {
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LOG_TRACE(Input, "PortInfo packet received: {}", data.model);
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}
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void Client::OnPadData(Response::PadData data) {
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LOG_TRACE(Input, "PadData packet received");
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if (data.packet_counter <= packet_sequence) {
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LOG_WARNING(
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Input,
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"PadData packet dropped because its stale info. Current count: {} Packet count: {}",
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packet_sequence, data.packet_counter);
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return;
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}
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packet_sequence = data.packet_counter;
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// TODO: Check how the Switch handles motions and how the CemuhookUDP motion
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// directions correspond to the ones of the Switch
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Common::Vec3f accel = Common::MakeVec<float>(data.accel.x, data.accel.y, data.accel.z);
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Common::Vec3f gyro = Common::MakeVec<float>(data.gyro.pitch, data.gyro.yaw, data.gyro.roll);
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{
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std::lock_guard guard(status->update_mutex);
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status->motion_status = {accel, gyro};
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// TODO: add a setting for "click" touch. Click touch refers to a device that differentiates
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// between a simple "tap" and a hard press that causes the touch screen to click.
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bool is_active = data.touch_1.is_active != 0;
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float x = 0;
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float y = 0;
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if (is_active && status->touch_calibration) {
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u16 min_x = status->touch_calibration->min_x;
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u16 max_x = status->touch_calibration->max_x;
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u16 min_y = status->touch_calibration->min_y;
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u16 max_y = status->touch_calibration->max_y;
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x = (std::clamp(static_cast<u16>(data.touch_1.x), min_x, max_x) - min_x) /
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static_cast<float>(max_x - min_x);
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y = (std::clamp(static_cast<u16>(data.touch_1.y), min_y, max_y) - min_y) /
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static_cast<float>(max_y - min_y);
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}
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status->touch_status = {x, y, is_active};
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}
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}
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void Client::StartCommunication(const std::string& host, u16 port, u8 pad_index, u32 client_id) {
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SocketCallback callback{[this](Response::Version version) { OnVersion(version); },
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[this](Response::PortInfo info) { OnPortInfo(info); },
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[this](Response::PadData data) { OnPadData(data); }};
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LOG_INFO(Input, "Starting communication with UDP input server on {}:{}", host, port);
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socket = std::make_unique<Socket>(host, port, pad_index, client_id, callback);
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thread = std::thread{SocketLoop, this->socket.get()};
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}
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void TestCommunication(const std::string& host, u16 port, u8 pad_index, u32 client_id,
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std::function<void()> success_callback,
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std::function<void()> failure_callback) {
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std::thread([=] {
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Common::Event success_event;
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SocketCallback callback{[](Response::Version version) {}, [](Response::PortInfo info) {},
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[&](Response::PadData data) { success_event.Set(); }};
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Socket socket{host, port, pad_index, client_id, callback};
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std::thread worker_thread{SocketLoop, &socket};
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bool result = success_event.WaitFor(std::chrono::seconds(8));
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socket.Stop();
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worker_thread.join();
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if (result)
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success_callback();
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else
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failure_callback();
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})
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.detach();
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}
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CalibrationConfigurationJob::CalibrationConfigurationJob(
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const std::string& host, u16 port, u8 pad_index, u32 client_id,
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std::function<void(Status)> status_callback,
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std::function<void(u16, u16, u16, u16)> data_callback) {
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std::thread([=] {
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constexpr u16 CALIBRATION_THRESHOLD = 100;
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u16 min_x{UINT16_MAX}, min_y{UINT16_MAX};
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u16 max_x, max_y;
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Status current_status{Status::Initialized};
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SocketCallback callback{[](Response::Version version) {}, [](Response::PortInfo info) {},
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[&](Response::PadData data) {
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if (current_status == Status::Initialized) {
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// Receiving data means the communication is ready now
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current_status = Status::Ready;
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status_callback(current_status);
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}
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if (!data.touch_1.is_active)
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return;
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LOG_DEBUG(Input, "Current touch: {} {}", data.touch_1.x,
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data.touch_1.y);
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min_x = std::min(min_x, static_cast<u16>(data.touch_1.x));
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min_y = std::min(min_y, static_cast<u16>(data.touch_1.y));
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if (current_status == Status::Ready) {
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// First touch - min data (min_x/min_y)
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current_status = Status::Stage1Completed;
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status_callback(current_status);
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}
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if (data.touch_1.x - min_x > CALIBRATION_THRESHOLD &&
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data.touch_1.y - min_y > CALIBRATION_THRESHOLD) {
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// Set the current position as max value and finishes
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// configuration
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max_x = data.touch_1.x;
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max_y = data.touch_1.y;
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current_status = Status::Completed;
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data_callback(min_x, min_y, max_x, max_y);
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status_callback(current_status);
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complete_event.Set();
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}
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}};
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Socket socket{host, port, pad_index, client_id, callback};
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std::thread worker_thread{SocketLoop, &socket};
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complete_event.Wait();
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socket.Stop();
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worker_thread.join();
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})
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.detach();
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}
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CalibrationConfigurationJob::~CalibrationConfigurationJob() {
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Stop();
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}
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void CalibrationConfigurationJob::Stop() {
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complete_event.Set();
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}
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} // namespace InputCommon::CemuhookUDP
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