[grabber] is continuously grabbing

grabber.cpp

@@ -1,13 +1,22 @@
 #include "grabber.h"
 #include <iostream>
+#include <pylon/PylonIncludes.h>
 
 void Grabber::run() {
   int count = 0;
-  while (!stop_request) {
-      std::cerr << "running: " << count << std::endl;
-      count += 1;
-      msleep(500);
-  }
-  std::cerr << "terminated: " << count << std::endl;
-  //emit terminated();
+  if (camera->isOpen()) {
+      Pylon::CGrabResultPtr frame;
+      Pylon::CInstantCamera *cam = camera->getCamera();
+      cam->StartGrabbing();
+      while (!stop_request) {
+          camera->frameRate(75);
+          MyImage img;
+          cam->RetrieveResult( 5000, frame, Pylon::TimeoutHandling_ThrowException);
+          img.setFrame(frame);
+          buffer->push(img);
+          count += 1;
+      }
+      cam->StopGrabbing();
+      std::cerr << "terminated: " << count << std::endl;
+    }
 }

grabber.h

@@ -3,18 +3,23 @@
 
 #include <QObject>
 #include <QThread>
+#include "pylonwrapper.h"
+#include "imagebuffer.h"
 
 class Grabber : public QThread
 {
   Q_OBJECT
 public:
-  Grabber(QObject *parent = nullptr) : QThread(parent) {}
+  Grabber(PylonWrapper *camera, ImageBuffer*buffer, QObject *parent = nullptr) :
+    QThread(parent), camera(camera), buffer(buffer) {}
 
   void run() override;
   void stop();
 
 private:
   bool stop_request = false;
+  PylonWrapper *camera;
+  ImageBuffer *buffer;
 
 public slots:
   void requestStop() {

imagebuffer.cpp

@@ -46,6 +46,7 @@ void ImageBuffer::push(const MyImage &img) {
   if (load < static_cast<int64_t>(buffer.capacity()))
     load += 1;
   mutex.unlock();
+  std::cerr << "load: " << bufferLoad() << "\t pressure: " << bufferPreassure() << std::endl;
 }
 
 bool ImageBuffer::bufferNotEmpty() {

pylonrecorder.cpp

@@ -20,7 +20,6 @@
 #include <QToolBar>
 #include <iostream>
 #include <chrono>
-#include "grabber.h"
 
 #if defined(QT_PRINTSUPPORT_LIB)
 #  include <QtPrintSupport/qtprintsupportglobal.h>
@@ -42,6 +41,8 @@ PylonRecorder::PylonRecorder(QWidget *parent)
   scrollArea->setVisible(false);
   setCentralWidget(scrollArea);
   pylon = new PylonWrapper();
+  buffer = new ImageBuffer();
+  grabber = new Grabber(pylon, buffer);
   createActions();
   updateActions();
   resize(QGuiApplication::primaryScreen()->availableSize() * 3 / 5);
@@ -50,6 +51,8 @@ PylonRecorder::PylonRecorder(QWidget *parent)
 
 PylonRecorder::~PylonRecorder(){
   delete pylon;
+  delete buffer;
+  delete grabber;
 }
 
 bool PylonRecorder::loadFile(const QString &fileName) {
@@ -290,6 +293,7 @@ void PylonRecorder::createActions() {
   grab_still_action->setShortcut(tr("Ctrl+ "));
   grab_continuous_action = camera_menu->addAction(tr("&grab continuous"), this, &PylonRecorder::startRecording);
   grab_continuous_action->setShortcut(tr("Ctrl+Enter"));
+  grab_stop_action = camera_menu->addAction(tr("&stop grabbing"), this, &PylonRecorder::stopRecording);
 
   QMenu *helpMenu = menuBar()->addMenu(tr("&Help"));
   helpMenu->addAction(tr("&About"), this, &PylonRecorder::about);
@@ -301,6 +305,8 @@ void PylonRecorder::createActions() {
   toolbar->addAction(disconnect_camera_action);
   toolbar->addSeparator();
   toolbar->addAction(grab_still_action);
+  toolbar->addAction(grab_continuous_action);
+  toolbar->addAction(grab_stop_action);
 }
 
 void PylonRecorder::updateActions() {
@@ -313,6 +319,7 @@ void PylonRecorder::updateActions() {
   connect_camera_action->setEnabled(!pylon->isOpen());
   grab_still_action->setEnabled(pylon->isOpen());
   grab_continuous_action->setEnabled(pylon->isOpen());
+
 }
 
 void PylonRecorder::scaleImage(double factor) {
@@ -357,31 +364,13 @@ void PylonRecorder::disconnectCamera() {
 
 void PylonRecorder::startRecording() {
   int framecount = 500;
-  Grabber grabber;
-  grabber.start();
-  Pylon::CGrabResultPtr frame;
-  if (pylon->isOpen()) {
-      pylon->frameRate(75);
-      Pylon::CInstantCamera *cam = pylon->getCamera();
-      cam->StartGrabbing();
-      auto start = std::chrono::high_resolution_clock::now();
-      for (int i = 0; i < framecount; ++i) {
-          MyImage img;
-          cam->RetrieveResult( 5000, frame, Pylon::TimeoutHandling_ThrowException);
-          img.setFrame(frame);
-          buffer.push(img);
-          std::cerr << i << ": Buffer stats: capacity: " << buffer.capacity() << "\tload: " << buffer.bufferLoad() << "\t pressure: " << buffer.bufferPreassure() << "frameid: " << frame->GetID() << std::endl;
-       }
-      auto finish = std::chrono::high_resolution_clock::now();
-      std::chrono::duration<double> elapsed = finish - start;
-      cam->StopGrabbing();
-      std::cerr << "elapsed time: " << elapsed.count() << " s\n";
-  }
-  grabber.requestStop();
-  grabber.wait(10000);
+  grabber->start();
 }
 
-void PylonRecorder::stopRecording() {}
+void PylonRecorder::stopRecording() {
+  grabber->requestStop();
+  grabber->wait(10000);
+}
 
 void PylonRecorder::grabStillFromPylon() {
   if (pylon->isOpen()) {

pylonrecorder.h

@@ -4,6 +4,8 @@
 #include <QMainWindow>
 #include "pylonwrapper.h"
 #include "imagebuffer.h"
+#include "grabber.h"
+
 #include <QImage>
 #if defined(QT_PRINTSUPPORT_LIB)
 #  include <QtPrintSupport/qtprintsupportglobal.h>
@@ -66,7 +68,9 @@ private:
     QScrollArea *scrollArea;
     double scaleFactor = 1;
     PylonWrapper *pylon;
-    ImageBuffer buffer;
+    ImageBuffer *buffer;
+    Grabber *grabber;
+    bool grabbing;
 
 #if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
     QPrinter printer;
@@ -81,6 +85,7 @@ private:
     QAction *fitToWindowAct;
     QAction *grab_still_action;
     QAction *grab_continuous_action;
+    QAction *grab_stop_action;
     QAction *connect_camera_action;
     QAction *disconnect_camera_action;
 };