input_common, common: Add a few functions

These functions include reloading udp client, testing communication and configuring calibration. I also added a function to common/thread.h to use WaitFor.

src/common/thread.h

@@ -55,6 +55,15 @@ public:
         is_set = false;
     }
 
+    template <class Duration>
+    bool WaitFor(const std::chrono::duration<Duration>& time) {
+        std::unique_lock<std::mutex> lk(mutex);
+        if (!condvar.wait_for(lk, time, [this] { return is_set; }))
+            return false;
+        is_set = false;
+        return true;
+    }
+
     template <class Clock, class Duration>
     bool WaitUntil(const std::chrono::time_point<Clock, Duration>& time) {
         std::unique_lock<std::mutex> lk(mutex);

src/input_common/main.cpp

@@ -76,6 +76,11 @@ std::string GenerateAnalogParamFromKeys(int key_up, int key_down, int key_left,
     return circle_pad_param.Serialize();
 }
 
+void ReloadInputDevices() {
+    if (udp)
+        udp->ReloadUDPClient();
+}
+
 namespace Polling {
 
 std::vector<std::unique_ptr<DevicePoller>> GetPollers(DeviceType type) {

src/input_common/main.h

@@ -37,6 +37,9 @@ std::string GenerateKeyboardParam(int key_code);
 std::string GenerateAnalogParamFromKeys(int key_up, int key_down, int key_left, int key_right,
                                         int key_modifier, float modifier_scale);
 
+/// Reloads the input devices
+void ReloadInputDevices();
+
 namespace Polling {
 
 enum class DeviceType { Button, Analog };

src/input_common/udp/client.cpp

@@ -11,7 +11,6 @@
 #include <boost/asio.hpp>
 #include <boost/bind.hpp>
 #include "common/logging/log.h"
-#include "common/vector_math.h"
 #include "input_common/udp/client.h"
 #include "input_common/udp/protocol.h"
 
@@ -128,12 +127,7 @@ static void SocketLoop(Socket* socket) {
 Client::Client(std::shared_ptr<DeviceStatus> status, const std::string& host, u16 port,
                u8 pad_index, u32 client_id)
     : status(status) {
-    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()};
+    StartCommunication(host, port, pad_index, client_id);
 }
 
 Client::~Client() {
@@ -141,6 +135,12 @@ Client::~Client() {
     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);
 }
@@ -192,4 +192,93 @@ void Client::OnPadData(Response::PadData data) {
     }
 }
 
+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

src/input_common/udp/client.h

@@ -12,6 +12,7 @@
 #include <vector>
 #include <boost/optional.hpp>
 #include "common/common_types.h"
+#include "common/thread.h"
 #include "common/vector_math.h"
 
 namespace InputCommon::CemuhookUDP {
@@ -47,15 +48,48 @@ public:
     explicit Client(std::shared_ptr<DeviceStatus> status, const std::string& host = DEFAULT_ADDR,
                     u16 port = DEFAULT_PORT, u8 pad_index = 0, u32 client_id = 24872);
     ~Client();
+    void ReloadSocket(const std::string& host = "127.0.0.1", u16 port = 26760, u8 pad_index = 0,
+                      u32 client_id = 24872);
 
 private:
     void OnVersion(Response::Version);
     void OnPortInfo(Response::PortInfo);
     void OnPadData(Response::PadData);
+    void StartCommunication(const std::string& host, u16 port, u8 pad_index, u32 client_id);
 
     std::unique_ptr<Socket> socket;
     std::shared_ptr<DeviceStatus> status;
     std::thread thread;
     u64 packet_sequence = 0;
 };
+
+/// An async job allowing configuration of the touchpad calibration.
+class CalibrationConfigurationJob {
+public:
+    enum class Status {
+        Initialized,
+        Ready,
+        Stage1Completed,
+        Completed,
+    };
+    /**
+     * Constructs and starts the job with the specified parameter.
+     *
+     * @param status_callback Callback for job status updates
+     * @param data_callback Called when calibration data is ready
+     */
+    explicit 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);
+    ~CalibrationConfigurationJob();
+    void Stop();
+
+private:
+    Common::Event complete_event;
+};
+
+void TestCommunication(const std::string& host, u16 port, u8 pad_index, u32 client_id,
+                       std::function<void()> success_callback,
+                       std::function<void()> failure_callback);
+
 } // namespace InputCommon::CemuhookUDP

src/input_common/udp/udp.cpp

@@ -85,6 +85,11 @@ State::~State() {
     Input::UnregisterFactory<Input::MotionDevice>("cemuhookudp");
 }
 
+void State::ReloadUDPClient() {
+    client->ReloadSocket(Settings::values.udp_input_address, Settings::values.udp_input_port,
+                         Settings::values.udp_pad_index);
+}
+
 std::unique_ptr<State> Init() {
     return std::make_unique<State>();
 }

src/input_common/udp/udp.h

@@ -16,6 +16,7 @@ class State {
 public:
     State();
     ~State();
+    void ReloadUDPClient();
 
 private:
     std::unique_ptr<Client> client;