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Diffstat (limited to 'src/input_common/udp/client.cpp')
| -rw-r--r-- | src/input_common/udp/client.cpp | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/src/input_common/udp/client.cpp b/src/input_common/udp/client.cpp new file mode 100644 index 000000000..c31236c7c --- /dev/null +++ b/src/input_common/udp/client.cpp @@ -0,0 +1,283 @@ +// Copyright 2018 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <algorithm> +#include <array> +#include <chrono> +#include <cstring> +#include <functional> +#include <thread> +#include <boost/asio.hpp> +#include <boost/bind.hpp> +#include "common/logging/log.h" +#include "input_common/udp/client.h" +#include "input_common/udp/protocol.h" + +using boost::asio::ip::address_v4; +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, u8 pad_index, u32 client_id, + SocketCallback callback) + : client_id(client_id), timer(io_service), + send_endpoint(udp::endpoint(address_v4::from_string(host), port)), + socket(io_service, udp::endpoint(udp::v4(), 0)), pad_index(pad_index), + callback(std::move(callback)) {} + + 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: + void HandleReceive(const boost::system::error_code& error, 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& error) { + // Send a request for getting port info for the pad + Request::PortInfo port_info{1, {pad_index, 0, 0, 0}}; + auto port_message = Request::Create(port_info, client_id); + std::memcpy(&send_buffer1, &port_message, PORT_INFO_SIZE); + std::size_t len = socket.send_to(boost::asio::buffer(send_buffer1), send_endpoint); + + // Send a request for getting pad data for the pad + Request::PadData pad_data{Request::PadData::Flags::Id, pad_index, EMPTY_MAC_ADDRESS}; + auto pad_message = Request::Create(pad_data, client_id); + std::memcpy(send_buffer2.data(), &pad_message, PAD_DATA_SIZE); + std::size_t len2 = socket.send_to(boost::asio::buffer(send_buffer2), send_endpoint); + StartSend(timer.expiry()); + } + + SocketCallback callback; + boost::asio::io_service io_service; + boost::asio::basic_waitable_timer<clock> timer; + udp::socket socket; + + u32 client_id; + u8 pad_index; + + 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(); +} + +Client::Client(std::shared_ptr<DeviceStatus> status, const std::string& host, u16 port, + u8 pad_index, u32 client_id) + : status(status) { + StartCommunication(host, port, pad_index, client_id); +} + +Client::~Client() { + socket->Stop(); + thread.join(); +} + +void Client::ReloadSocket(const std::string& host, u16 port, u8 pad_index, u32 client_id) { + socket->Stop(); + thread.join(); + StartCommunication(host, port, pad_index, client_id); +} + +void Client::OnVersion(Response::Version data) { + LOG_TRACE(Input, "Version packet received: {}", data.version); +} + +void Client::OnPortInfo(Response::PortInfo data) { + LOG_TRACE(Input, "PortInfo packet received: {}", data.model); +} + +void Client::OnPadData(Response::PadData data) { + LOG_TRACE(Input, "PadData packet received"); + if (data.packet_counter <= packet_sequence) { + LOG_WARNING( + Input, + "PadData packet dropped because its stale info. Current count: {} Packet count: {}", + packet_sequence, data.packet_counter); + return; + } + packet_sequence = data.packet_counter; + // TODO: Check how the Switch handles motions and how the CemuhookUDP motion + // directions correspond to the ones of the Switch + Common::Vec3f accel = Common::MakeVec<float>(data.accel.x, data.accel.y, data.accel.z); + Common::Vec3f gyro = Common::MakeVec<float>(data.gyro.pitch, data.gyro.yaw, data.gyro.roll); + { + std::lock_guard guard(status->update_mutex); + + status->motion_status = {accel, gyro}; + + // TODO: add a setting for "click" touch. Click touch refers to a device that differentiates + // between a simple "tap" and a hard press that causes the touch screen to click. + bool is_active = data.touch_1.is_active != 0; + + float x = 0; + float y = 0; + + if (is_active && status->touch_calibration) { + u16 min_x = status->touch_calibration->min_x; + u16 max_x = status->touch_calibration->max_x; + u16 min_y = status->touch_calibration->min_y; + u16 max_y = status->touch_calibration->max_y; + + x = (std::clamp(static_cast<u16>(data.touch_1.x), min_x, max_x) - min_x) / + static_cast<float>(max_x - min_x); + y = (std::clamp(static_cast<u16>(data.touch_1.y), min_y, max_y) - min_y) / + static_cast<float>(max_y - min_y); + } + + status->touch_status = {x, y, is_active}; + } +} + +void Client::StartCommunication(const std::string& host, u16 port, u8 pad_index, u32 client_id) { + SocketCallback callback{[this](Response::Version version) { OnVersion(version); }, + [this](Response::PortInfo info) { OnPortInfo(info); }, + [this](Response::PadData data) { OnPadData(data); }}; + LOG_INFO(Input, "Starting communication with UDP input server on {}:{}", host, port); + socket = std::make_unique<Socket>(host, port, pad_index, client_id, callback); + thread = std::thread{SocketLoop, this->socket.get()}; +} + +void TestCommunication(const std::string& host, u16 port, u8 pad_index, u32 client_id, + std::function<void()> success_callback, + std::function<void()> failure_callback) { + std::thread([=] { + Common::Event success_event; + SocketCallback callback{[](Response::Version version) {}, [](Response::PortInfo info) {}, + [&](Response::PadData data) { success_event.Set(); }}; + Socket socket{host, port, pad_index, client_id, callback}; + std::thread worker_thread{SocketLoop, &socket}; + bool result = success_event.WaitFor(std::chrono::seconds(8)); + socket.Stop(); + worker_thread.join(); + if (result) + success_callback(); + else + failure_callback(); + }) + .detach(); +} + +CalibrationConfigurationJob::CalibrationConfigurationJob( + const std::string& host, u16 port, u8 pad_index, u32 client_id, + std::function<void(Status)> status_callback, + std::function<void(u16, u16, u16, u16)> data_callback) { + + std::thread([=] { + constexpr u16 CALIBRATION_THRESHOLD = 100; + + u16 min_x{UINT16_MAX}, min_y{UINT16_MAX}; + u16 max_x, max_y; + + Status current_status{Status::Initialized}; + SocketCallback callback{[](Response::Version version) {}, [](Response::PortInfo info) {}, + [&](Response::PadData data) { + if (current_status == Status::Initialized) { + // Receiving data means the communication is ready now + current_status = Status::Ready; + status_callback(current_status); + } + if (!data.touch_1.is_active) + return; + LOG_DEBUG(Input, "Current touch: {} {}", data.touch_1.x, + data.touch_1.y); + min_x = std::min(min_x, static_cast<u16>(data.touch_1.x)); + min_y = std::min(min_y, static_cast<u16>(data.touch_1.y)); + if (current_status == Status::Ready) { + // First touch - min data (min_x/min_y) + current_status = Status::Stage1Completed; + status_callback(current_status); + } + if (data.touch_1.x - min_x > CALIBRATION_THRESHOLD && + data.touch_1.y - min_y > CALIBRATION_THRESHOLD) { + // Set the current position as max value and finishes + // configuration + max_x = data.touch_1.x; + max_y = data.touch_1.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, pad_index, client_id, 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 |