diff --git a/CMakeLists.txt b/CMakeLists.txt index ce97b791..7af1b195 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -14,6 +14,7 @@ option(OPT_BUILD_AIRSPY_SOURCE "Build Airspy Source Module (Depedencies: libairs option(OPT_BUILD_SDRPLAY_SOURCE "Build SDRplay Source Module (Depedencies: libsdrplay)" OFF) option(OPT_BUILD_PLUTOSDR_SOURCE "Build PlutoSDR Source Module (Depedencies: libiio, libad9361)" ON) option(OPT_BUILD_HACKRF_SOURCE "Build HackRF Source Module (Depedencies: libhackrf)" OFF) +option(OPT_BUILD_RTL_SDR_SOURCE "Build HackRF Source Module (Depedencies: libhackrf)" ON) option(OPT_BUILD_AUDIO_SINK "Build Audio Sink Module (Depedencies: portaudio)" ON) # Core of SDR++ @@ -57,6 +58,10 @@ if (OPT_BUILD_HACKRF_SOURCE) add_subdirectory("hackrf_source") endif (OPT_BUILD_HACKRF_SOURCE) +if (OPT_BUILD_RTL_SDR_SOURCE) +add_subdirectory("rtl_sdr_source") +endif (OPT_BUILD_RTL_SDR_SOURCE) + if (OPT_BUILD_AUDIO_SINK) add_subdirectory("audio_sink") endif (OPT_BUILD_AUDIO_SINK) diff --git a/rtl_sdr_source/CMakeLists.txt b/rtl_sdr_source/CMakeLists.txt new file mode 100644 index 00000000..feede41f --- /dev/null +++ b/rtl_sdr_source/CMakeLists.txt @@ -0,0 +1,34 @@ +cmake_minimum_required(VERSION 3.13) +project(rtl_sdr_source) + +if (MSVC) + set(CMAKE_CXX_FLAGS "-O2 /std:c++17 /EHsc") +else() + set(CMAKE_CXX_FLAGS "-O3 -std=c++17 -fpermissive") +endif (MSVC) + +include_directories("src/") + +file(GLOB SRC "src/*.cpp") + +add_library(rtl_sdr_source SHARED ${SRC}) +target_link_libraries(rtl_sdr_source PRIVATE sdrpp_core) +set_target_properties(rtl_sdr_source PROPERTIES PREFIX "") + +if (MSVC) + # Lib path + target_link_directories(sdrpp_core PUBLIC "C:/Program Files/PothosSDR/bin/") + + target_link_libraries(rtl_sdr_source PUBLIC rtlsdr) +else (MSVC) + find_package(PkgConfig) + + pkg_check_modules(LIBRTLSDR REQUIRED librtlsdr) + + target_include_directories(rtl_sdr_source PUBLIC ${LIBRTLSDR_INCLUDE_DIRS}) + target_link_directories(rtl_sdr_source PUBLIC ${LIBRTLSDR_LIBRARY_DIRS}) + target_link_libraries(rtl_sdr_source PUBLIC ${LIBRTLSDR_LIBRARIES}) +endif (MSVC) + +# Install directives +install(TARGETS rtl_sdr_source DESTINATION lib/sdrpp/plugins) \ No newline at end of file diff --git a/rtl_sdr_source/src/main.cpp b/rtl_sdr_source/src/main.cpp new file mode 100644 index 00000000..356e9fbe --- /dev/null +++ b/rtl_sdr_source/src/main.cpp @@ -0,0 +1,375 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +#define CONCAT(a, b) ((std::string(a) + b).c_str()) + +SDRPP_MOD_INFO { + /* Name: */ "rtl_sdr_source", + /* Description: */ "RTL-SDR source module for SDR++", + /* Author: */ "Ryzerth", + /* Version: */ 0, 1, 0, + /* Max instances */ 1 +}; + +ConfigManager config; + +const double sampleRates[] = { + 250000, + 1024000, + 1536000, + 1792000, + 1920000, + 2048000, + 2160000, + 2560000, + 2880000, + 3200000 +}; + +const char* sampleRatesTxt[] = { + "250KHz", + "1.024MHz", + "1.536MHz", + "1.792MHz", + "1.92MHz", + "2.048MHz", + "2.16MHz", + "2.56MHz", + "2.88MHz", + "3.2MHz" +}; + +const char* directSamplingModesTxt = "Disabled\0I branch\0Q branch\0"; + +class RTLSDRSourceModule : public ModuleManager::Instance { +public: + RTLSDRSourceModule(std::string name) { + this->name = name; + + sampleRate = sampleRates[0]; + + handler.ctx = this; + handler.selectHandler = menuSelected; + handler.deselectHandler = menuDeselected; + handler.menuHandler = menuHandler; + handler.startHandler = start; + handler.stopHandler = stop; + handler.tuneHandler = tune; + handler.stream = &stream; + + for (int i = 0; i < 10; i++) { + sampleRateListTxt += sampleRatesTxt[i]; + sampleRateListTxt += '\0'; + } + + refresh(); + + // Select device from config here + selectFirst(); + + core::setInputSampleRate(sampleRate); + + sigpath::sourceManager.registerSource("RTL-SDR", &handler); + } + + ~RTLSDRSourceModule() { + + } + + void enable() { + enabled = true; + } + + void disable() { + enabled = false; + } + + bool isEnabled() { + return enabled; + } + + void refresh() { + devNames.clear(); + devListTxt = ""; + + devCount = rtlsdr_get_device_count(); + char buf[1024]; + for (int i = 0; i < devCount; i++) { + const char* devName = rtlsdr_get_device_name(i); + sprintf(buf, "%s [%d]", devName, i); + devNames.push_back(buf); + devListTxt += buf; + devListTxt += '\0'; + } + } + + void selectFirst() { + if (devCount > 0) { + selectById(0); + } + } + + void selectByName(std::string name) { + for (int i = 0; i < devCount; i++) { + if (name == devNames[i]) { + selectById(i); + return; + } + } + selectFirst(); + } + + void selectById(int id) { + selectedDevName = devNames[id]; + + if (rtlsdr_open(&openDev, id) < 0) { + spdlog::error("Could not open RTL-SDR"); + return; + } + + gainList.clear(); + int gains[256]; + int n = rtlsdr_get_tuner_gains(openDev, gains); + gainList = std::vector(gains, gains + n); + std::sort(gainList.begin(), gainList.end()); + if (gainId >= gainList.size()) { gainId = gainList.size() - 1; } + + // Create config if needed + + // Load config + + rtlsdr_close(openDev); + } + +private: + std::string getBandwdithScaled(double bw) { + char buf[1024]; + if (bw >= 1000000.0) { + sprintf(buf, "%.1lfMHz", bw / 1000000.0); + } + else if (bw >= 1000.0) { + sprintf(buf, "%.1lfKHz", bw / 1000.0); + } + else { + sprintf(buf, "%.1lfHz", bw); + } + return std::string(buf); + } + + static void menuSelected(void* ctx) { + RTLSDRSourceModule* _this = (RTLSDRSourceModule*)ctx; + core::setInputSampleRate(_this->sampleRate); + spdlog::info("RTLSDRSourceModule '{0}': Menu Select!", _this->name); + } + + static void menuDeselected(void* ctx) { + RTLSDRSourceModule* _this = (RTLSDRSourceModule*)ctx; + spdlog::info("RTLSDRSourceModule '{0}': Menu Deselect!", _this->name); + } + + static void start(void* ctx) { + RTLSDRSourceModule* _this = (RTLSDRSourceModule*)ctx; + if (_this->running) { + return; + } + + if (rtlsdr_open(&_this->openDev, _this->devId) < 0) { + spdlog::error("Could not open RTL-SDR"); + return; + } + + rtlsdr_set_sample_rate(_this->openDev, _this->sampleRate); + rtlsdr_set_center_freq(_this->openDev, _this->freq); + rtlsdr_set_tuner_bandwidth(_this->openDev, 0); + rtlsdr_set_direct_sampling(_this->openDev, _this->directSamplingMode); + rtlsdr_set_agc_mode(_this->openDev, _this->directSamplingMode); + rtlsdr_set_tuner_gain(_this->openDev, _this->gainList[_this->gainId]); + if (_this->tunerAgc) { + rtlsdr_set_tuner_gain_mode(_this->openDev, 0); + } + else { + rtlsdr_set_tuner_gain_mode(_this->openDev, 1); + rtlsdr_set_tuner_gain(_this->openDev, _this->gainList[_this->gainId]); + } + + _this->asyncCount = (int)roundf(_this->sampleRate / (200 * 512)) * 512; + + _this->workerThread = std::thread(&RTLSDRSourceModule::worker, _this); + + _this->running = true; + spdlog::info("RTLSDRSourceModule '{0}': Start!", _this->name); + } + + static void stop(void* ctx) { + RTLSDRSourceModule* _this = (RTLSDRSourceModule*)ctx; + if (!_this->running) { + return; + } + _this->running = false; + _this->stream.stopWriter(); + rtlsdr_cancel_async(_this->openDev); + if (_this->workerThread.joinable()) { _this->workerThread.join(); } + _this->stream.clearWriteStop(); + rtlsdr_close(_this->openDev); + spdlog::info("RTLSDRSourceModule '{0}': Stop!", _this->name); + } + + static void tune(double freq, void* ctx) { + RTLSDRSourceModule* _this = (RTLSDRSourceModule*)ctx; + if (_this->running) { + rtlsdr_set_center_freq(_this->openDev, freq); + } + _this->freq = freq; + spdlog::info("RTLSDRSourceModule '{0}': Tune: {1}!", _this->name, freq); + } + + static void menuHandler(void* ctx) { + RTLSDRSourceModule* _this = (RTLSDRSourceModule*)ctx; + float menuWidth = ImGui::GetContentRegionAvailWidth(); + + if (_this->running) { style::beginDisabled(); } + + ImGui::SetNextItemWidth(menuWidth); + if (ImGui::Combo(CONCAT("##_airspy_dev_sel_", _this->name), &_this->devId, _this->devListTxt.c_str())) { + // Select RTL device here + core::setInputSampleRate(_this->sampleRate); + // Save config here + } + + if (ImGui::Combo(CONCAT("##_airspy_sr_sel_", _this->name), &_this->srId, _this->sampleRateListTxt.c_str())) { + _this->sampleRate = sampleRates[_this->srId]; + core::setInputSampleRate(_this->sampleRate); + // Save config here + } + + ImGui::SameLine(); + float refreshBtnWdith = menuWidth - ImGui::GetCursorPosX(); + if (ImGui::Button(CONCAT("Refresh##_airspy_refr_", _this->name), ImVec2(refreshBtnWdith, 0))) { + _this->refresh(); + + // Reselect dev from config here + core::setInputSampleRate(_this->sampleRate); + } + + if (_this->running) { style::endDisabled(); } + + // Rest of rtlsdr config here + ImGui::Text("Direct Sampling"); + ImGui::SameLine(); + ImGui::SetNextItemWidth(menuWidth - ImGui::GetCursorPosX()); + if (ImGui::Combo(CONCAT("##_rtlsdr_ds_", _this->name), &_this->directSamplingMode, directSamplingModesTxt)) { + if (_this->running) { + rtlsdr_set_direct_sampling(_this->openDev, _this->directSamplingMode); + } + // Save config here + } + + if (ImGui::Checkbox(CONCAT("RTL AGC##_rtlsdr_rtl_agc_", _this->name), &_this->rtlAgc)) { + if (_this->running) { + rtlsdr_set_agc_mode(_this->openDev, _this->rtlAgc); + } + // Save config here + } + + if (ImGui::Checkbox(CONCAT("Tuner AGC##_rtlsdr_tuner_agc_", _this->name), &_this->tunerAgc)) { + if (_this->running) { + if (_this->tunerAgc) { + rtlsdr_set_tuner_gain_mode(_this->openDev, 0); + } + else { + rtlsdr_set_tuner_gain_mode(_this->openDev, 1); + rtlsdr_set_tuner_gain(_this->openDev, _this->gainList[_this->gainId]); + } + } + // Save config here + } + + if (_this->tunerAgc) { style::beginDisabled(); } + ImGui::SetNextItemWidth(menuWidth); + if (ImGui::SliderInt(CONCAT("##_rtlsdr_gain_", _this->name), &_this->gainId, 0, _this->gainList.size() - 1, "")) { + if (_this->running) { + rtlsdr_set_tuner_gain(_this->openDev, _this->gainList[_this->gainId]); + } + // Save config here + } + if (_this->tunerAgc) { style::endDisabled(); } + } + + void worker() { + rtlsdr_reset_buffer(openDev); + rtlsdr_read_async(openDev, asyncHandler, this, 0, asyncCount); + } + + static void asyncHandler(unsigned char *buf, uint32_t len, void *ctx) { + RTLSDRSourceModule* _this = (RTLSDRSourceModule*)ctx; + + int sampCount = len / 2; + for (int i = 0; i < sampCount; i++) { + _this->stream.writeBuf[i].i = (float)(buf[(i * 2) + 1] - 127) / 128.0f; + _this->stream.writeBuf[i].q = (float)(buf[i * 2] - 127) / 128.0f; + } + if (!_this->stream.swap(sampCount)) { return; } + } + + std::string name; + rtlsdr_dev_t* openDev; + bool enabled = true; + dsp::stream stream; + double sampleRate; + SourceManager::SourceHandler handler; + bool running = false; + double freq; + std::string selectedDevName = ""; + int devId = 0; + int srId = 0; + int devCount = 0; + std::thread workerThread; + + bool biasT = false; + + int gainId = 0; + std::vector gainList; + + bool rtlAgc = false; + bool tunerAgc = false; + + int directSamplingMode = 0; + + // Handler stuff + int asyncCount = 0; + + std::vector devNames; + std::string devListTxt; + std::string sampleRateListTxt; +}; + +MOD_EXPORT void _INIT_() { + json def = json({}); + def["devices"] = json({}); + def["device"] = ""; + config.setPath(options::opts.root + "/rtl_sdr_config.json"); + config.load(def); + config.enableAutoSave(); +} + +MOD_EXPORT ModuleManager::Instance* _CREATE_INSTANCE_(std::string name) { + return new RTLSDRSourceModule(name); +} + +MOD_EXPORT void _DELETE_INSTANCE_(ModuleManager::Instance* instance) { + delete (RTLSDRSourceModule*)instance; +} + +MOD_EXPORT void _END_() { + config.disableAutoSave(); + config.save(); +} \ No newline at end of file