Start python adapter from tracking plugin

Src/Model/BioTrackerTrackingAlgorithm.cpp

@@ -47,9 +47,12 @@ BioTrackerTrackingAlgorithm::BioTrackerTrackingAlgorithm(IController *parent, IM
 
     _lastImage = nullptr;
     _lastFramenumber = -1;
+    start_python();
+}
 
-    _sock = zmq::socket_t(_ctx, zmq::socket_type::req);
-    _sock.bind("ipc:///tmp/biotracker.python.zmq");
+BioTrackerTrackingAlgorithm::~BioTrackerTrackingAlgorithm()
+{
+    stop_python();
 }
 
 void BioTrackerTrackingAlgorithm::request_shared_memory() {
@@ -65,12 +68,29 @@ void BioTrackerTrackingAlgorithm::request_shared_memory() {
     _shm_img = (float*)init_shm_mmap(shm_path.c_str(), _imageX * _imageY * sizeof(float));
 }
 
-void BioTrackerTrackingAlgorithm::receiveAreaDescriptorUpdate(IModelAreaDescriptor *areaDescr) {
-	_areaInfo = areaDescr;
+void BioTrackerTrackingAlgorithm::stop_python() {
+    if (_python_process.has_value()) {
+        _python_process_group.terminate();
+        _python_process.value().wait();
+    }
 }
 
-BioTrackerTrackingAlgorithm::~BioTrackerTrackingAlgorithm()
-{
+void BioTrackerTrackingAlgorithm::start_python() {
+    stop_python();
+    _python_process = boost::process::child(
+            boost::process::search_path("python3"),
+            boost::process::args({
+                "-c", "from biotracker import BiotrackerAdapter;"
+                "BiotrackerAdapter('/home/max/tmp/example.multi_instance'"
+                ",verbose=True).run();"
+                }), _python_process_group);
+
+    _sock = zmq::socket_t(_ctx, zmq::socket_type::req);
+    _sock.connect("ipc:///tmp/biotracker.python.zmq");
+}
+
+void BioTrackerTrackingAlgorithm::receiveAreaDescriptorUpdate(IModelAreaDescriptor *areaDescr) {
+	_areaInfo = areaDescr;
 }
 
 void BioTrackerTrackingAlgorithm::receiveParametersChanged() {

Src/Model/BioTrackerTrackingAlgorithm.h

@@ -6,6 +6,7 @@
 
 #include "TrackerParameter.h"
 
+#include <boost/process.hpp>
 #include <opencv2/opencv.hpp>
 #include "Interfaces/IModel/IModelTrackingAlgorithm.h"
 #include "Interfaces/IModel/IModelDataExporter.h"
@@ -38,6 +39,8 @@ public Q_SLOTS:
 
 private:
     void request_shared_memory();
+    void start_python();
+    void stop_python();
 
     BST::TrackedTrajectory* _TrackedTrajectoryMajor;
 	TrackerParameter* _TrackingParameter;
@@ -45,7 +48,8 @@ private:
 
 	int _noFish;
 
-	//std::ofstream _ofs;
+    std::optional<boost::process::child> _python_process;
+    boost::process::group _python_process_group;
 
 	int _imageX;
 	int _imageY;