New custom network lib + half finished rigctl server

CMakeLists.txt

@@ -36,6 +36,7 @@ option(OPT_BUILD_WEATHER_SAT_DECODER "Build the HRPT decoder module (no dependen
 option(OPT_BUILD_DISCORD_PRESENCE "Build the Discord Rich Presence module" ON)
 option(OPT_BUILD_FREQUENCY_MANAGER "Build the Frequency Manager module" ON)
 option(OPT_BUILD_RECORDER "Audio and baseband recorder" ON)
+option(OPT_BUILD_RIGCTL_SERVER "Rigctl backend for controlling SDR++ with software like gpredict" ON)
 
 # Compiler arguments for each platform
 if (MSVC)
@@ -145,6 +146,10 @@ if (OPT_BUILD_RECORDER)
 add_subdirectory("recorder")
 endif (OPT_BUILD_RECORDER)
 
+if (OPT_BUILD_RIGCTL_SERVER)
+add_subdirectory("rigctl_server")
+endif (OPT_BUILD_RIGCTL_SERVER)
+
 add_executable(sdrpp "src/main.cpp" "win32/resources.rc")
 target_link_libraries(sdrpp PRIVATE sdrpp_core)
 

contributing.md

@@ -121,5 +121,5 @@ Please follow this guide to properly format the JSON files for custom color maps
 # Best Practices
 
 * All additions and/or bug fixes to the core must not add additional dependencies.
-
 * Use VSCode for development, VS seems to cause issues.
+* DO NOT use libboost for any code meant for this repository

core/CMakeLists.txt

@@ -48,6 +48,9 @@ if (MSVC)
     find_package(FFTW3f CONFIG REQUIRED)
     target_link_libraries(sdrpp_core PUBLIC FFTW3::fftw3f)
 
+    # WinSock2
+    target_link_libraries(sdrpp_core PUBLIC wsock32 ws2_32)
+
 else()
     find_package(PkgConfig)
     find_package(OpenGL REQUIRED)

core/src/utils/networking.cpp

@@ -1,2 +1,381 @@
+#pragma once
 #include <utils/networking.h>
+#include <assert.h>
 
+namespace net {
+
+#ifdef _WIN32
+    extern bool winsock_init = false;
+#endif
+
+    ConnClass::ConnClass(Socket sock) {
+        _sock = sock;
+        connectionOpen = true;
+        readWorkerThread = std::thread(&ConnClass::readWorker, this);
+        writeWorkerThread = std::thread(&ConnClass::writeWorker, this);
+    }
+    
+    ConnClass::~ConnClass() {
+        ConnClass::close();
+    }
+
+    void ConnClass::close() {
+        std::lock_guard lck(closeMtx);
+        // Set stopWorkers to true
+        {
+            std::lock_guard lck1(readQueueMtx);
+            std::lock_guard lck2(writeQueueMtx);
+            stopWorkers = true;
+        }
+        
+        // Notify the workers of the change
+        readQueueCnd.notify_all();
+        writeQueueCnd.notify_all();
+
+        if (connectionOpen) {
+#ifdef _WIN32
+            closesocket(_sock);
+#else
+            ::close(_sock);
+#endif
+        }
+
+        // Wait for the theads to terminate
+        if (readWorkerThread.joinable()) { readWorkerThread.join(); }
+        if (writeWorkerThread.joinable()) { writeWorkerThread.join(); }
+
+        {
+            std::lock_guard lck(connectionOpenMtx);
+            connectionOpen = false;
+        }
+        connectionOpenCnd.notify_all();
+    }
+
+    bool ConnClass::isOpen() {
+        return connectionOpen;
+    }
+
+    void ConnClass::waitForEnd() {
+        std::unique_lock lck(readQueueMtx);
+        connectionOpenCnd.wait(lck, [this](){ return !connectionOpen; });
+    }
+
+    int ConnClass::read(int count, uint8_t* buf) {
+        assert(connectionOpen);
+        std::lock_guard lck(readMtx);
+#ifdef _WIN32
+        int ret = recv(_sock, (char*)buf, count, 0);
+#else
+        int ret = ::read(_sock, buf, count);
+#endif
+        if (ret <= 0) {
+            {
+                std::lock_guard lck(connectionOpenMtx);
+                connectionOpen = false;
+            }
+            connectionOpenCnd.notify_all();
+        }
+        return ret;
+    }
+
+    bool ConnClass::write(int count, uint8_t* buf) {
+        assert(connectionOpen);
+        std::lock_guard lck(writeMtx);
+#ifdef _WIN32
+        int ret = send(_sock, (char*)buf, count, 0);
+#else
+        int ret = ::write(_sock, buf, count);
+#endif
+        if (ret <= 0) {
+            {
+                std::lock_guard lck(connectionOpenMtx);
+                connectionOpen = false;
+            }
+            connectionOpenCnd.notify_all();
+        }
+        return (ret > 0);
+    }
+
+    void ConnClass::readAsync(int count, uint8_t* buf, void (*handler)(int count, uint8_t* buf, void* ctx), void* ctx) {
+        assert(connectionOpen);
+        // Create entry
+        ConnReadEntry entry;
+        entry.count = count;
+        entry.buf = buf;
+        entry.handler = handler;
+        entry.ctx = ctx;
+
+        // Add entry to queue
+        {
+            std::lock_guard lck(readQueueMtx);
+            readQueue.push_back(entry);
+        }
+
+        // Notify read worker
+        readQueueCnd.notify_all();
+    }
+
+    void ConnClass::writeAsync(int count, uint8_t* buf) {
+        assert(connectionOpen);
+        // Create entry
+        ConnWriteEntry entry;
+        entry.count = count;
+        entry.buf = buf;
+
+        // Add entry to queue
+        {
+            std::lock_guard lck(writeQueueMtx);
+            writeQueue.push_back(entry);
+        }
+
+        // Notify write worker
+        writeQueueCnd.notify_all();
+    }
+
+    void ConnClass::readWorker() {
+        while (true) {
+            // Wait for wakeup and exit if it's for terminating the thread
+            std::unique_lock lck(readQueueMtx);
+            readQueueCnd.wait(lck, [this](){ return (readQueue.size() > 0 || stopWorkers); });
+            if (stopWorkers || !connectionOpen) { return; }
+
+            // Pop first element off the list
+            ConnReadEntry entry = readQueue[0];
+            readQueue.erase(readQueue.begin());
+            lck.unlock();
+
+            // Read from socket and send data to the handler
+            int ret = read(entry.count, entry.buf);
+            if (ret <= 0) {
+                {
+                    std::lock_guard lck(connectionOpenMtx);
+                    connectionOpen = false;
+                }
+                connectionOpenCnd.notify_all();
+                return;
+            }
+            entry.handler(ret, entry.buf, entry.ctx);
+        }
+    }
+
+    void ConnClass::writeWorker() {
+        while (true) {
+            // Wait for wakeup and exit if it's for terminating the thread
+            std::unique_lock lck(writeQueueMtx);
+            writeQueueCnd.wait(lck, [this](){ return (writeQueue.size() > 0 || stopWorkers); });
+            if (stopWorkers || !connectionOpen) { return; }
+
+            // Pop first element off the list
+            ConnWriteEntry entry = writeQueue[0];
+            writeQueue.erase(writeQueue.begin());
+            lck.unlock();
+
+            // Write to socket
+            if (!write(entry.count, entry.buf)) {
+                {
+                    std::lock_guard lck(connectionOpenMtx);
+                    connectionOpen = false;
+                }
+                connectionOpenCnd.notify_all();
+                return;
+            }
+        }
+    }
+
+
+    ListenerClass::ListenerClass(Socket listenSock) {
+        sock = listenSock;
+        listening = true;
+        acceptWorkerThread = std::thread(&ListenerClass::worker, this);
+    }
+
+    ListenerClass::~ListenerClass() {
+        close();
+    }
+
+    Conn ListenerClass::accept() {
+        assert(listening);
+        std::lock_guard lck(acceptMtx);
+        Socket _sock;
+
+        // Accept socket
+        _sock = ::accept(sock, NULL, NULL);
+        if (_sock < 0) {
+            listening = false;
+            throw std::runtime_error("Could not bind socket");
+            return NULL;
+        }
+
+        return Conn(new ConnClass(_sock));
+    }
+
+    void ListenerClass::acceptAsync(void (*handler)(Conn conn, void* ctx), void* ctx) {
+        assert(listening);
+        // Create entry
+        ListenerAcceptEntry entry;
+        entry.handler = handler;
+        entry.ctx = ctx;
+
+        // Add entry to queue
+        {
+            std::lock_guard lck(acceptQueueMtx);
+            acceptQueue.push_back(entry);
+        }
+
+        // Notify write worker
+        acceptQueueCnd.notify_all();
+    }
+
+    void ListenerClass::close() {
+        {
+            std::lock_guard lck(acceptQueueMtx);
+            stopWorker = true;
+        }
+
+        if (listening) {
+#ifdef _WIN32
+            closesocket(sock);
+#else
+            ::close(sock);
+#endif
+        }
+
+        acceptQueueCnd.notify_all();
+        if (acceptWorkerThread.joinable()) { acceptWorkerThread.join(); }
+
+
+
+        listening = false;
+    }
+
+    bool ListenerClass::isListening() {
+        return listening;
+    }
+
+    void ListenerClass::worker() {
+        while (true) {
+            // Wait for wakeup and exit if it's for terminating the thread
+            std::unique_lock lck(acceptQueueMtx);
+            acceptQueueCnd.wait(lck, [this](){ return (acceptQueue.size() > 0 || stopWorker); });
+            if (stopWorker || !listening) { return; }
+
+            // Pop first element off the list
+            ListenerAcceptEntry entry = acceptQueue[0];
+            acceptQueue.erase(acceptQueue.begin());
+            lck.unlock();
+
+            // Read from socket and send data to the handler
+            try {
+                Conn client = accept();
+                if (!client) {
+                    listening = false;
+                    return;
+                }
+                entry.handler(std::move(client), entry.ctx);
+            }
+            catch (std::exception e) {
+                listening = false;
+                return;
+            }
+        }
+    }
+
+
+    Conn connect(Protocol proto, std::string host, uint16_t port) {
+        Socket sock;
+
+#ifdef _WIN32
+        // Initilize WinSock2
+        if (!winsock_init) {
+            WSADATA wsa;
+            if (WSAStartup(MAKEWORD(2,2),&wsa)) {
+                throw std::runtime_error("Could not initialize WinSock2");
+                return NULL;
+            }
+            winsock_init = true;
+        }
+        assert(winsock_init);
+#endif
+
+        // Create a socket
+        sock = socket(AF_INET, SOCK_STREAM, (proto == PROTO_TCP) ? IPPROTO_TCP : IPPROTO_UDP);
+        if (sock < 0) {
+            throw std::runtime_error("Could not create socket");
+            return NULL;
+        }
+
+        // Get address from hostname/ip
+        hostent* remoteHost = gethostbyname(host.c_str());
+        if (remoteHost == NULL || remoteHost->h_addr_list[0] == NULL) {
+            throw std::runtime_error("Could get address from host");
+            return NULL;
+        }
+        uint32_t* naddr = (uint32_t*)remoteHost->h_addr_list[0];
+        
+        // Create host address
+        struct sockaddr_in addr;
+        addr.sin_addr.s_addr = *naddr;
+        addr.sin_family = AF_INET;
+	    addr.sin_port = htons(port);
+
+        // Connect to host
+        if (::connect(sock, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
+            throw std::runtime_error("Could not connect to host");
+            return NULL;
+        }
+
+        return Conn(new ConnClass(sock));
+    }
+
+    Listener listen(Protocol proto, std::string host, uint16_t port) {
+        Socket listenSock;
+
+#ifdef _WIN32
+        // Initilize WinSock2
+        if (!winsock_init) {
+            WSADATA wsa;
+            if (WSAStartup(MAKEWORD(2,2),&wsa)) {
+                throw std::runtime_error("Could not initialize WinSock2");
+                return NULL;
+            }
+            winsock_init = true;
+        }
+        assert(winsock_init);
+#endif
+
+        // Create a socket
+        listenSock = socket(AF_INET, SOCK_STREAM, (proto == PROTO_TCP) ? IPPROTO_TCP : IPPROTO_UDP);
+        if (listenSock < 0) {
+            throw std::runtime_error("Could not create socket");
+            return NULL;
+        }
+
+        // Get address from hostname/ip
+        hostent* remoteHost = gethostbyname(host.c_str());
+        if (remoteHost == NULL || remoteHost->h_addr_list[0] == NULL) {
+            throw std::runtime_error("Could get address from host");
+            return NULL;
+        }
+        uint32_t* naddr = (uint32_t*)remoteHost->h_addr_list[0];
+
+        // Create host address
+        struct sockaddr_in addr;
+        addr.sin_addr.s_addr = *naddr;
+        addr.sin_family = AF_INET;
+	    addr.sin_port = htons(port);
+
+        // Bind socket
+        if (bind(listenSock, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
+            throw std::runtime_error("Could not bind socket");
+            return NULL;
+        }
+
+        // Listen
+        if (::listen(listenSock, SOMAXCONN) != 0) {
+            throw std::runtime_error("Could not listen");
+            return NULL;
+        }
+
+        return Listener(new ListenerClass(listenSock));
+    }
+}

core/src/utils/networking.h

@@ -1,66 +1,128 @@
 #pragma once
+#include <stdint.h>
 #include <string>
 #include <vector>
-#include <thread>
-#include <chrono>
 #include <mutex>
+#include <inttypes.h>
+#include <memory>
+#include <thread>
+#include <condition_variable>
 
-struct TCPAsyncRead {
+#ifdef _WIN32
-    int timeout;
+#include <WinSock2.h>
+#include <WS2tcpip.h>
+#else
+#include <unistd.h>
+#include <strings.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h> 
+#endif
+
+namespace net {
+#ifdef _WIN32
+    typedef SOCKET Socket;
+#else
+    typedef int Socket;
+#endif
+
+    enum Protocol {
+        PROTO_TCP,
+        PROTO_UDP
+    };
+
+    struct ConnReadEntry {
         int count;
-    void (*handler)(int count, char* data, void* ctx);
+        uint8_t* buf;
+        void (*handler)(int count, uint8_t* buf, void* ctx);
         void* ctx;
     };
 
-struct TCPAsyncWrite {
+    struct ConnWriteEntry {
-    int timeoutMs;
         int count;
-    char* data;
+        uint8_t* buf;
     };
 
-enum {
+    class ConnClass {
-    NET_ERR_OK = 0,
-    NET_ERR_TIMEOUT = -1,
-    NET_ERR_SYSTEM = -2
-};
-
-class TCPClient {
     public:
-    TCPClient();
+        ConnClass(Socket sock);
-    ~TCPClient();
+        ~ConnClass();
-
-    bool connect(std::string host, int port);
-    bool disconnect();
-
-    int enableAsync();
-    int disableAsync();
-
-    bool isAsync();
-
-    int read(char* data, int count, int timeout = -1);
-    int write(char* data, int count, int timeout = -1);
-
-    int asyncRead(int count, void (*handler)(int count, char* data, void* ctx), int timeout = -1);
-    int asyncWrite(char* data, int count, int timeout = -1);
 
+        void close();
         bool isOpen();
+        void waitForEnd();
 
-    int close();
+        int read(int count, uint8_t* buf);
+        bool write(int count, uint8_t* buf);
+        void readAsync(int count, uint8_t* buf, void (*handler)(int count, uint8_t* buf, void* ctx), void* ctx);
+        void writeAsync(int count, uint8_t* buf);
 
     private:
         void readWorker();
         void writeWorker();
 
+        bool stopWorkers = false;
+        bool connectionOpen = false;
+
+        std::mutex readMtx;
+        std::mutex writeMtx;
         std::mutex readQueueMtx;
-    std::vector<TCPAsyncRead> readQueue;
-
         std::mutex writeQueueMtx;
-    std::vector<TCPAsyncWrite> writeQueue;
+        std::mutex connectionOpenMtx;
-
+        std::mutex closeMtx;
+        std::condition_variable readQueueCnd;
+        std::condition_variable writeQueueCnd;
+        std::condition_variable connectionOpenCnd;
+        std::vector<ConnReadEntry> readQueue;
+        std::vector<ConnWriteEntry> writeQueue;
         std::thread readWorkerThread;
         std::thread writeWorkerThread;
 
-    bool open = false;
+        Socket _sock;
-    bool async = false;
 
     };
+
+    typedef std::unique_ptr<ConnClass> Conn;
+
+    struct ListenerAcceptEntry {
+        void (*handler)(Conn conn, void* ctx);
+        void* ctx;
+    };
+
+    class ListenerClass {
+    public:
+        ListenerClass(Socket listenSock);
+        ~ListenerClass();
+
+        Conn accept();
+        void acceptAsync(void (*handler)(Conn conn, void* ctx), void* ctx);
+
+        void close();
+        bool isListening();
+
+    private:
+        void worker();
+
+        bool listening = false;
+        bool stopWorker = false;
+
+        std::mutex acceptMtx;
+        std::mutex acceptQueueMtx;
+        std::condition_variable acceptQueueCnd;
+        std::vector<ListenerAcceptEntry> acceptQueue;
+        std::thread acceptWorkerThread;
+
+        Socket sock;
+
+    };
+
+    typedef std::unique_ptr<ListenerClass> Listener;
+
+    Conn connect(Protocol proto, std::string host, uint16_t port);
+    Listener listen(Protocol proto, std::string host, uint16_t port);
+
+#ifdef _WIN32
+    extern bool winsock_init;
+#endif
+}

demo_module/CMakeLists.txt

@@ -4,15 +4,17 @@ project(demo)
 if (MSVC)
     set(CMAKE_CXX_FLAGS "-O2 /std:c++17 /EHsc")
 elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-    set(CMAKE_CXX_FLAGS "-O3 -std=c++17 -Wno-unused-command-line-argument -undefined dynamic_lookup -fPIC")
+    set(CMAKE_CXX_FLAGS "-O3 -std=c++17 -Wno-unused-command-line-argument -undefined dynamic_lookup")
 else ()
-    set(CMAKE_CXX_FLAGS "-O3 -std=c++17 -fPIC")
+    set(CMAKE_CXX_FLAGS "-O3 -std=c++17")
 endif ()
 
 file(GLOB SRC "src/*.cpp")
+
 include_directories("src/")
 
 add_library(demo SHARED ${SRC})
+target_link_libraries(demo PRIVATE sdrpp_core)
 set_target_properties(demo PROPERTIES PREFIX "")
 
 # Install directives

demo_module/src/main.cpp

@@ -18,7 +18,7 @@ public:
     }
 
     ~DemoModule() {
-        
+        gui::menu.removeEntry(name);
     }
 
     void enable() {

recorder/src/main.cpp

@@ -15,6 +15,8 @@
 #include <regex>
 #include <options.h>
 #include <gui/widgets/folder_select.h>
+#include <recorder_interface.h>
+#include <core.h>
 #define CONCAT(a, b) ((std::string(a) + b).c_str())
 
 SDRPP_MOD_INFO {
@@ -55,7 +57,7 @@ public:
         
         // Create config if it doesn't exist
         if (!config.conf.contains(name)) {
-            config.conf[name]["mode"] = 1;
+            config.conf[name]["mode"] = RECORDER_MODE_AUDIO;
             config.conf[name]["recPath"] = "%ROOT%/recordings";
             config.conf[name]["audioStream"] = "Radio";
             created = true;
@@ -85,12 +87,15 @@ public:
         refreshStreams();
 
         gui::menu.registerEntry(name, menuHandler, this);
+        core::modComManager.registerInterface("recorder", name, moduleInterfaceHandler, this);
     }
 
     ~RecorderModule() {
+        core::modComManager.unregisterInterface(name);
+        
         // Stop recording
         if (recording) {
-            if (recMode == 1) {
+            if (recMode == RECORDER_MODE_AUDIO) {
                 audioSplit.unbindStream(&audioHandlerStream);
                 audioHandler.stop();
                 audioWriter->close();
@@ -171,15 +176,15 @@ private:
         if (_this->recording) { style::beginDisabled(); }
         ImGui::BeginGroup();
         ImGui::Columns(2, CONCAT("AirspyGainModeColumns##_", _this->name), false);
-        if (ImGui::RadioButton(CONCAT("Baseband##_recmode_", _this->name), _this->recMode == 0)) {
+        if (ImGui::RadioButton(CONCAT("Baseband##_recmode_", _this->name), _this->recMode == RECORDER_MODE_BASEBAND)) {
-            _this->recMode = 0;
+            _this->recMode = RECORDER_MODE_BASEBAND;
             config.acquire();
             config.conf[_this->name]["mode"] = _this->recMode;
             config.release(true);
         }
         ImGui::NextColumn();
-        if (ImGui::RadioButton(CONCAT("Audio##_recmode_", _this->name), _this->recMode == 1)) {
+        if (ImGui::RadioButton(CONCAT("Audio##_recmode_", _this->name), _this->recMode == RECORDER_MODE_AUDIO)) {
-            _this->recMode = 1;
+            _this->recMode = RECORDER_MODE_AUDIO;
             config.acquire();
             config.conf[_this->name]["mode"] = _this->recMode;
             config.release(true);
@@ -198,7 +203,7 @@ private:
         }
 
         // Mode specific menu
-        if (_this->recMode == 1) {
+        if (_this->recMode == RECORDER_MODE_AUDIO) {
             _this->audioMenu(menuColumnWidth);
         }
         else {
@@ -210,29 +215,15 @@ private:
         if (!folderSelect.pathIsValid()) { style::beginDisabled(); }
         if (!recording) {
             if (ImGui::Button(CONCAT("Record##_recorder_rec_", name), ImVec2(menuColumnWidth, 0))) {
-                samplesWritten = 0;
+                std::lock_guard lck(recMtx);
-                std::string expandedPath = expandString(folderSelect.path + genFileName("/baseband_", false));
+                startRecording();
-                sampleRate = sigpath::signalPath.getSampleRate();
-                basebandWriter = new WavWriter(expandedPath, 16, 2, sigpath::signalPath.getSampleRate());
-                if (basebandWriter->isOpen()) {
-                    basebandHandler.start();
-                    sigpath::signalPath.bindIQStream(&basebandStream);
-                    recording = true;
-                    spdlog::info("Recording to '{0}'", expandedPath);
-                }
-                else {
-                    spdlog::error("Could not create '{0}'", expandedPath);
-                }
             }
             ImGui::TextColored(ImGui::GetStyleColorVec4(ImGuiCol_Text), "Idle --:--:--");
         }
         else {
             if (ImGui::Button(CONCAT("Stop##_recorder_rec_", name), ImVec2(menuColumnWidth, 0))) {
-                recording = false;
+                std::lock_guard lck(recMtx);
-                sigpath::signalPath.unbindIQStream(&basebandStream);
+                stopRecording();
-                basebandHandler.stop();
-                basebandWriter->close();
-                delete basebandWriter;
             }
             uint64_t seconds = samplesWritten / (uint64_t)sampleRate;
             time_t diff = seconds;
@@ -279,29 +270,15 @@ private:
         if (!folderSelect.pathIsValid() || selectedStreamName == "") { style::beginDisabled(); }
         if (!recording) {
             if (ImGui::Button(CONCAT("Record##_recorder_rec_", name), ImVec2(menuColumnWidth, 0))) {
-                samplesWritten = 0;
+                std::lock_guard lck(recMtx);
-                std::string expandedPath = expandString(folderSelect.path + genFileName("/audio_", true, selectedStreamName));
+                startRecording();
-                sampleRate = sigpath::sinkManager.getStreamSampleRate(selectedStreamName);
-                audioWriter = new WavWriter(expandedPath, 16, 2, sigpath::sinkManager.getStreamSampleRate(selectedStreamName));
-                if (audioWriter->isOpen()) {
-                    recording = true;
-                    audioHandler.start();
-                    audioSplit.bindStream(&audioHandlerStream);
-                    spdlog::info("Recording to '{0}'", expandedPath);
-                }
-                else {
-                    spdlog::error("Could not create '{0}'", expandedPath);
-                }
             }
             ImGui::TextColored(ImGui::GetStyleColorVec4(ImGuiCol_Text), "Idle --:--:--");
         }
         else {
             if (ImGui::Button(CONCAT("Stop##_recorder_rec_", name), ImVec2(menuColumnWidth, 0))) {
-                recording = false;
+                std::lock_guard lck(recMtx);
-                audioSplit.unbindStream(&audioHandlerStream);
+                stopRecording();
-                audioHandler.stop();
-                audioWriter->close();
-                delete audioWriter;
             }
             uint64_t seconds = samplesWritten / (uint64_t)sampleRate;
             time_t diff = seconds;
@@ -325,6 +302,76 @@ private:
         _this->samplesWritten += count;
     }
 
+    static void moduleInterfaceHandler(int code, void* in, void* out, void* ctx) {
+        RecorderModule* _this = (RecorderModule*)ctx;
+        std::lock_guard lck(_this->recMtx);
+        if (code == RECORDER_IFACE_CMD_GET_MODE) {
+            int* _out = (int*)out;
+            *_out = _this->recMode;
+        }
+        else if (code == RECORDER_IFACE_CMD_SET_MODE) {
+            if (_this->recording) { return; }
+            int* _in = (int*)in;
+            _this->recMode = std::clamp<int>(*_in, 0, 1);
+        }
+        else if (code == RECORDER_IFACE_CMD_START) {
+            if (!_this->recording) { _this->startRecording(); }
+        }
+        else if (code == RECORDER_IFACE_CMD_STOP) {
+            if (_this->recording) { _this->stopRecording(); }
+        }
+    }
+
+    void startRecording() {
+        if (recMode == RECORDER_MODE_BASEBAND) {
+            samplesWritten = 0;
+            std::string expandedPath = expandString(folderSelect.path + genFileName("/baseband_", false));
+            sampleRate = sigpath::signalPath.getSampleRate();
+            basebandWriter = new WavWriter(expandedPath, 16, 2, sigpath::signalPath.getSampleRate());
+            if (basebandWriter->isOpen()) {
+                basebandHandler.start();
+                sigpath::signalPath.bindIQStream(&basebandStream);
+                recording = true;
+                spdlog::info("Recording to '{0}'", expandedPath);
+            }
+            else {
+                spdlog::error("Could not create '{0}'", expandedPath);
+            }
+        }
+        else if (recMode == RECORDER_MODE_AUDIO) {
+            samplesWritten = 0;
+            std::string expandedPath = expandString(folderSelect.path + genFileName("/audio_", true, selectedStreamName));
+            sampleRate = sigpath::sinkManager.getStreamSampleRate(selectedStreamName);
+            audioWriter = new WavWriter(expandedPath, 16, 2, sigpath::sinkManager.getStreamSampleRate(selectedStreamName));
+            if (audioWriter->isOpen()) {
+                recording = true;
+                audioHandler.start();
+                audioSplit.bindStream(&audioHandlerStream);
+                spdlog::info("Recording to '{0}'", expandedPath);
+            }
+            else {
+                spdlog::error("Could not create '{0}'", expandedPath);
+            }
+        }
+    }
+
+    void stopRecording() {
+        if (recMode == 0) {
+            recording = false;
+            sigpath::signalPath.unbindIQStream(&basebandStream);
+            basebandHandler.stop();
+            basebandWriter->close();
+            delete basebandWriter;
+        }
+        else if (recMode == 1) {
+            recording = false;
+            audioSplit.unbindStream(&audioHandlerStream);
+            audioHandler.stop();
+            audioWriter->close();
+            delete audioWriter;
+        }
+    }
+
 
     std::string name;
     bool enabled = true;
@@ -341,6 +388,8 @@ private:
 
     dsp::stream<dsp::stereo_t> dummyStream;
     
+    std::mutex recMtx;
+
     FolderSelect folderSelect;
 
     // Audio path