Update capture architecture to add Source parent class

CMakeLists.txt

@@ -40,6 +40,7 @@ target_link_libraries(sdrplay PUBLIC /usr/local/lib/libsdrplay_api.so.3.07)
 add_executable(blah2
   src/blah2.cpp
   src/capture/Capture.cpp
+  src/capture/Source.cpp
   src/capture/rspduo/RspDuo.cpp
   src/capture/usrp/Usrp.cpp
   src/process/ambiguity/Ambiguity.cpp

config/radar4-usrp.yml

@@ -1,7 +1,12 @@
 capture:
   fs: 2000000
   fc: 204640000
+  device:
     type: "Usrp"
+    address: "localhost"
+    subdev: "A:A A:B"
+    antenna: ["RX2", "RX2"]
+    gain: [20.0, 20.0]
   replay:
     state: false
     loop: true

src/blah2.cpp

@@ -64,7 +64,7 @@ int main(int argc, char **argv)
   bool saveIq, state, loop;
   tree["capture"]["fs"] >> fs;
   tree["capture"]["fc"] >> fc;
-  tree["capture"]["type"] >> type;
+  tree["capture"]["device"]["type"] >> type;
   tree["save"]["iq"] >> saveIq;
   tree["save"]["path"] >> path;
   tree["capture"]["replay"]["state"] >> state;
@@ -83,7 +83,8 @@ int main(int argc, char **argv)
   IqData *buffer2 = new IqData((int) (tBuffer*fs));
 
   // run capture
-  std::thread t1([&]{capture->process(buffer1, buffer2);});
+  std::thread t1([&]{capture->process(buffer1, buffer2, 
+    tree["capture"]["device"]);});
 
   // setup process CPI
   double tCpi;

src/capture/Capture.cpp

@@ -16,26 +16,24 @@ Capture::Capture(std::string _type, uint32_t _fs, uint32_t _fc, std::string _pat
   fc = _fc;
   path = _path;
   replay = false;
+  saveIq = false;
 }
 
-void Capture::process(IqData *buffer1, IqData *buffer2)
+void Capture::process(IqData *buffer1, IqData *buffer2, c4::yml::NodeRef config)
 {
-  if (is_type_valid(type))
-  {
   std::cout << "Setting up device " + type << std::endl;
 
-    // RspDuo device
-    if (type == VALID_TYPE[0])
-    {
-      //RspDuo *device = new RspDuo(this->fc, this->path);
-    }
+  std::unique_ptr<Source> device = factory_source(type, config);
 
-    // Usrp device
-    if (type == VALID_TYPE[1])
+  if (!replay)
   {
-      //Usrp *device = new Usrp(this->fc, this->path);
+    device->start();
+    device->process(buffer1, buffer2);
+  }
+  else
+  {
+    device->replay(buffer1, buffer2, file, loop);
   }
-    Usrp *device = new Usrp(this->fc, this->fs, this->path);
 
   // capture status thread
   std::thread t1([&]{
@@ -45,10 +43,10 @@ void Capture::process(IqData *buffer1, IqData *buffer2)
       httplib::Result res = cli.Get("/capture");
 
       // if capture status changed
-        if ((res->body == "true") != device->get_capture())
+      if ((res->body == "true") != saveIq)
       {
-          device->set_capture(res->body == "true");
-          if (device->get_capture())
+        saveIq = res->body == "true";
+        if (saveIq)
         {
           device->open_file();
         }
@@ -61,17 +59,38 @@ void Capture::process(IqData *buffer1, IqData *buffer2)
       sleep(1);
     }
   });
+}
 
-    if (!replay)
+std::unique_ptr<Source> Capture::factory_source(const std::string& type, c4::yml::NodeRef config)
+{
+    if (type == VALID_TYPE[0])
     {
-      device->start();
-      device->process(buffer1, buffer2);
+        return std::make_unique<RspDuo>(type, fc, fs, path, &saveIq);
     }
-    else
+    else if (type == VALID_TYPE[1])
     {
-      device->replay(buffer1, buffer2, file, loop);
-    }
+        std::string address, subdev;
+        std::vector<std::string> antenna;
+        std::vector<double> gain;
+        std::string _antenna;
+        double _gain;
+        config["address"] >> address;
+        config["subdev"] >> subdev;
+        config["antenna"][0] >> _antenna;
+        antenna.push_back(_antenna);
+        config["antenna"][1] >> _antenna;
+        antenna.push_back(_antenna);
+        config["gain"][0] >> _gain;
+        gain.push_back(_gain);
+        config["gain"][1] >> _gain;
+        gain.push_back(_gain);
+        
+        return std::make_unique<Usrp>(type, fc, fs, path, &saveIq, 
+          address, subdev, antenna, gain);
     }
+    // Handle unknown type
+    std::cerr << "Error: Source type does not exist." << std::endl;
+    return nullptr;
 }
 
 void Capture::set_replay(bool _loop, std::string _file)

src/capture/Capture.h

@@ -7,7 +7,13 @@
 #define CAPTURE_H
 
 #include <string>
+#include <memory>
+#include <ryml/ryml.hpp>
+#include <ryml/ryml_std.hpp> // optional header, provided for std:: interop
+#include <c4/format.hpp> // needed for the examples below
+
 #include "data/IqData.h"
+#include "capture/Source.h"
 
 class Capture
 {
@@ -15,6 +21,9 @@ private:
   /// @brief The valid capture devices.
   static const std::string VALID_TYPE[2];
 
+  /// @brief True if IQ data to be saved.
+  bool saveIq;
+
   /// @brief True if file replay is enabled.
   bool replay;
 
@@ -34,9 +43,6 @@ public:
   /// @brief Center frequency (Hz).
   uint32_t fc;
 
-  /// @brief True if IQ data is saved to file.
-  bool saveIq;
-
   /// @brief Absolute path to IQ save location.
   std::string path;
 
@@ -51,8 +57,12 @@ public:
   /// @brief Implement the capture process.
   /// @param buffer1 Buffer for reference samples.
   /// @param buffer2 Buffer for surveillance samples.
+  /// @param config Yaml config for device.
   /// @return Void.
-  void process(IqData *buffer1, IqData *buffer2);
+  void process(IqData *buffer1, IqData *buffer2, c4::yml::NodeRef config);
+
+  std::unique_ptr<Source> factory_source(const std::string& type, 
+    c4::yml::NodeRef config);
 
   /// @brief Set parameters to enable file replay.
   /// @param loop True if replay file should loop when complete.

src/capture/Source.cpp

@@ -0,0 +1,19 @@
+#include "Source.h"
+
+#include <iostream>
+
+Source::Source()
+{
+  
+}
+
+// constructor
+Source::Source(std::string _type, uint32_t _fc, uint32_t _fs, 
+    std::string _path, bool *_saveIq)
+{
+  type = _type;
+  fc = _fc;
+  fs = _fs;
+  path = _path;
+  saveIq = _saveIq;
+}

src/capture/Source.h

@@ -0,0 +1,79 @@
+/// @file Source.h
+/// @class Source
+/// @brief An abstract class for capture sources.
+/// @author 30hours
+
+#ifndef SOURCE_H
+#define SOURCE_H
+
+#include <string>
+#include <stdint.h>
+#include "data/IqData.h"
+
+class Source
+{
+protected:
+
+  /// @brief The capture device type.
+  std::string type;
+
+  /// @brief Center frequency (Hz).
+  uint32_t fc;
+
+  /// @brief Sampling frequency (Hz).
+  uint32_t fs;
+
+  /// @brief Absolute path to IQ save location.
+  std::string path;
+
+  /// @brief True if IQ data to be saved.
+  bool *saveIq;
+
+public:
+
+  Source();
+
+  /// @brief Constructor.
+  /// @param type The capture device type.
+  /// @param fs Sampling frequency (Hz).
+  /// @param fc Center frequency (Hz).
+  /// @param path Absolute path to IQ save location.
+  /// @return The object.
+  Source(std::string type, uint32_t fc, uint32_t fs, 
+    std::string path, bool *saveIq);
+
+  /// @brief Implement the capture process.
+  /// @param buffer1 Buffer for reference samples.
+  /// @param buffer2 Buffer for surveillance samples.
+  /// @return Void.
+  virtual void process(IqData *buffer1, IqData *buffer2) = 0;
+
+  /// @brief Call methods to start capture.
+  /// @return Void.
+  virtual void start() = 0;
+
+  /// @brief Call methods to gracefully stop capture.
+  /// @return Void.
+  virtual void stop() = 0;
+
+  /// @brief Implement replay function on RSPduo.
+  /// @param buffer1 Pointer to reference buffer.
+  /// @param buffer2 Pointer to surveillance buffer.
+  /// @param file Path to file to replay data from.
+  /// @param loop True if samples should loop at EOF.
+  /// @return Void.
+  virtual void replay(IqData *buffer1, IqData *buffer2, 
+    std::string file, bool loop) = 0;
+
+  /// @brief Open a new file to record IQ.
+  /// @details First creates a new file from current timestamp.
+  /// @return Void.
+  virtual void open_file() = 0;
+
+  /// @brief Close IQ file gracefully.
+  /// @return Void.
+  virtual void close_file() = 0;
+
+};
+
+#endif

src/capture/rspduo/RspDuo.cpp

@@ -56,9 +56,10 @@ IqData *buffer1;
 IqData *buffer2;
 
 // constructor
-RspDuo::RspDuo(uint32_t _fc, std::string _path)
+RspDuo::RspDuo(std::string _type, uint32_t _fc, uint32_t _fs, 
+  std::string _path, bool *_saveIq)
+    : Source(_type, _fc, _fs, _path, _saveIq)
 {
-  fc = _fc;
   nDecimation = DEF_DECIMATION_NR;
   usb_bulk_fg = false;
   small_verbose_fg = false;
@@ -70,8 +71,6 @@ RspDuo::RspDuo(uint32_t _fc, std::string _path)
   rf_notch_fg = false;
   dab_notch_fg = false;
   chunk_time_nr = DEF_CHUNK_TIME_NR;
-  path = _path;
-  capture = false;
 }
 
 std::string RspDuo::set_file(std::string path)
@@ -690,13 +689,3 @@ void RspDuo::finish()
   return;
 }
 
-void RspDuo::set_capture(bool _capture)
-{
-  capture = _capture;
-  capture_fg = capture;
-}
-
-bool RspDuo::get_capture()
-{
-  return capture;
-}

src/capture/rspduo/RspDuo.h

@@ -20,6 +20,7 @@
 #define RSPDUO_H
 
 #include "sdrplay_api.h"
+#include "capture/Source.h"
 #include "data/IqData.h"
 
 #include <stdint.h>
@@ -27,11 +28,9 @@
 
 #define BUFFER_SIZE_NR 1024
 
-class RspDuo
+class RspDuo : public Source
 {
 private:
-  /// @brief Center frequency (Hz)
-  uint32_t fc;
   /// @brief chunk time of recording (s)
   int chunk_time_nr;
   /// @brief AGC bandwidth (Hz)
@@ -54,10 +53,6 @@ private:
   bool small_verbose_fg;
   /// @brief Debugging.
   bool more_verbose_fg;
-  /// @brief File path.
-  std::string path;
-  /// @brief True if capture is enabled.
-  bool capture;
 
   /// @brief Maximum frequency (Hz).
   static const double MAX_FREQUENCY_NR;
@@ -188,7 +183,14 @@ public:
   /// @param fc Center frequency (Hz).
   /// @param path Path to save IQ data.
   /// @return The object.
-  RspDuo(uint32_t fc, std::string path);
+  RspDuo(std::string type, uint32_t fc, uint32_t fs, 
+    std::string path, bool *saveIq);
+
+  /// @brief Implement capture function on RSPduo.
+  /// @param buffer1 Pointer to reference buffer.
+  /// @param buffer2 Pointer to surveillance buffer.
+  /// @return Void.
+  void process(IqData *buffer1, IqData *buffer2);
 
   /// @brief Get file name from path.
   /// @return String of file name based on current time.
@@ -202,12 +204,6 @@ public:
   /// @return Void.
   void stop();
 
-  /// @brief Implement capture function on RSPduo.
-  /// @param buffer1 Pointer to reference buffer.
-  /// @param buffer2 Pointer to surveillance buffer.
-  /// @return Void.
-  void process(IqData *buffer1, IqData *buffer2);
-
   /// @brief Implement replay function on RSPduo.
   /// @param buffer1 Pointer to reference buffer.
   /// @param buffer2 Pointer to surveillance buffer.
@@ -223,15 +219,6 @@ public:
   /// @brief Close IQ file gracefully.
   /// @return Void.
   void close_file();
-
-  /// @brief Setter for capture.
-  /// @param capture True if capture is enabled.
-  /// @return Void.
-  void set_capture(bool capture);
-
-  /// @brief Getter for capture.
-  /// @return True if capture is true.
-  bool get_capture();
 };
 
 #endif

src/capture/usrp/Usrp.cpp

@@ -1,26 +1,22 @@
 #include "Usrp.h"
 
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
-#include <sys/time.h>
-#include <time.h>
-#include <unistd.h>
 #include <iostream>
 #include <vector>
-
-#include <uhd/usrp/multi_usrp.hpp>
 #include <complex>
+#include <uhd/usrp/multi_usrp.hpp>
 
 // constructor
-Usrp::Usrp(uint32_t _fc, uint32_t _fs, std::string _path)
+Usrp::Usrp(std::string _type, uint32_t _fc, uint32_t _fs, 
+  std::string _path, bool *_saveIq, std::string _address, 
+  std::string _subdev, std::vector<std::string> _antenna, 
+  std::vector<double> _gain)
+    : Source(_type, _fc, _fs, _path, _saveIq)
 {
-  fc = _fc;
-  fs = _fs;
-  path = _path;
-  capture = false;
+  address = _address;
+  subdev = _subdev;
+  antenna = _antenna;
+  gain = _gain;
 }
 
 std::string Usrp::set_file(std::string path)
@@ -39,12 +35,6 @@ void Usrp::stop()
 
 void Usrp::process(IqData *buffer1, IqData *buffer2)
 {
-    // tmp vars
-    std::string address = "localhost";
-    std::string subdev = "A:A A:B";
-    std::vector<std::string> antenna = {"RX2", "RX2"};
-    std::vector<double> gain = {20.0, 20.0};
-    
     // create a USRP object
     uhd::usrp::multi_usrp::sptr usrp = 
       uhd::usrp::multi_usrp::make(address);
@@ -72,7 +62,7 @@ void Usrp::process(IqData *buffer1, IqData *buffer2)
     uhd::rx_streamer::sptr rxStreamer = usrp->get_rx_stream(streamArgs);
 
     // allocate buffers to receive with samples (one buffer per channel)
-    const size_t samps_per_buff = 1024;
+    const size_t samps_per_buff = rxStreamer->get_max_num_samps();
     std::vector<std::complex<float>> usrpBuffer1(samps_per_buff);
     std::vector<std::complex<float>> usrpBuffer2(samps_per_buff);
 
@@ -90,12 +80,12 @@ void Usrp::process(IqData *buffer1, IqData *buffer2)
 
     while(true)
     {
-      // Receive samples
+      // receive samples
       size_t nReceived = rxStreamer->recv(buff_ptrs, samps_per_buff, metadata);
 
       // print errors
       if (metadata.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE) {
-          std::cerr << "Error during reception: " << metadata.strerror() << std::endl;
+          std::cerr << "Error: " << metadata.strerror() << std::endl;
       }
 
       buffer1->lock();
@@ -107,36 +97,14 @@ void Usrp::process(IqData *buffer1, IqData *buffer2)
       }
       buffer1->unlock();
       buffer2->unlock();
+
+      sleep(0.01);
     }
 }
 
 void Usrp::replay(IqData *buffer1, IqData *buffer2, std::string _file, bool _loop)
 {
-  short i1, q1, i2, q2;
-  int rv;
-  FILE *file_replay = fopen(_file.c_str(), "rb");
-
-  while (true)
-  {
-    rv = fread(&i1, 1, sizeof(short), file_replay);
-    rv = fread(&q1, 1, sizeof(short), file_replay);
-    rv = fread(&i2, 1, sizeof(short), file_replay);
-    rv = fread(&q2, 1, sizeof(short), file_replay);
-
-    buffer1->lock();
-    buffer2->lock();
-
-    if (buffer1->get_length() < buffer1->get_n())
-    {
-      buffer1->push_back({(double)i1, (double)q1});
-      buffer2->push_back({(double)i2, (double)q2});
-    }
-
-    buffer1->unlock();
-    buffer2->unlock();
-
-  }
-
+  return;
 }
 
 void Usrp::open_file()
@@ -148,14 +116,3 @@ void Usrp::close_file()
 {
   return;
 }
-
-
-void Usrp::set_capture(bool _capture)
-{
-  capture = _capture;
-}
-
-bool Usrp::get_capture()
-{
-  return capture;
-}

src/capture/usrp/Usrp.h

@@ -5,44 +5,60 @@
 /// 
 /// Should work on all USRP models EXCEPT discontinued (USRP1, USRP2).
 /// Networked models require an IP address in the config file.
+/// Requires a USB 3.0 cable for higher data rates.
 ///
 /// @author 30hours
+/// @todo Add replay to Usrp.
+/// @todo Add IQ data saving to Usrp.
+/// @todo Fix single overflow per CPI.
+/// @todo Fix occasional timeout ERROR_CODE_TIMEOUT.
 
 #ifndef USRP_H
 #define USRP_H
 
+#include "capture/Source.h"
 #include "data/IqData.h"
 
 #include <stdint.h>
 #include <string>
 
-#define BUFFER_SIZE_NR 1024
-
-class Usrp
+class Usrp : public Source
 {
 private:
-  /// @brief Center frequency (Hz)
-  uint32_t fc;
 
-  /// @brief Sampling rate (Hz)
-  uint32_t fs;
+  /// @brief Address of USRP device.
+  /// @details "localhost" if USB, else IP address.
+  std::string address;
 
-  /// @brief File path.
-  std::string path;
-  /// @brief True if capture is enabled.
-  bool capture;
+  /// @brief Subdevice string for USRP.
+  /// @details See docs.
+  std::string subdev;
+
+  /// @brief Antenna string for each channel.
+  std::vector<std::string> antenna;
+
+  /// @brief USRP gain for each channel.
+  std::vector<double> gain;
 
 public:
   /// @brief Constructor.
   /// @param fc Center frequency (Hz).
   /// @param path Path to save IQ data.
   /// @return The object.
-  Usrp(uint32_t fc, uint32_t fs, std::string path);
+  Usrp(std::string type, uint32_t fc, uint32_t fs, std::string path, 
+    bool *saveIq, std::string address, std::string subdev, 
+    std::vector<std::string> antenna, std::vector<double> gain);
 
   /// @brief Get file name from path.
   /// @return String of file name based on current time.
   std::string set_file(std::string path);
 
+  /// @brief Implement capture function on USRP.
+  /// @param buffer1 Pointer to reference buffer.
+  /// @param buffer2 Pointer to surveillance buffer.
+  /// @return Void.
+  void process(IqData *buffer1, IqData *buffer2);
+
   /// @brief Call methods to start capture.
   /// @return Void.
   void start();
@@ -51,12 +67,6 @@ public:
   /// @return Void.
   void stop();
 
-  /// @brief Implement capture function on RSPduo.
-  /// @param buffer1 Pointer to reference buffer.
-  /// @param buffer2 Pointer to surveillance buffer.
-  /// @return Void.
-  void process(IqData *buffer1, IqData *buffer2);
-
   /// @brief Implement replay function on RSPduo.
   /// @param buffer1 Pointer to reference buffer.
   /// @param buffer2 Pointer to surveillance buffer.
@@ -72,15 +82,6 @@ public:
   /// @brief Close IQ file gracefully.
   /// @return Void.
   void close_file();
-
-  /// @brief Setter for capture.
-  /// @param capture True if capture is enabled.
-  /// @return Void.
-  void set_capture(bool capture);
-
-  /// @brief Getter for capture.
-  /// @return True if capture is true.
-  bool get_capture();
 };
 
 #endif