[grabber] add grabber thread

grabber.cpp

@@ -0,0 +1,13 @@
+#include "grabber.h"
+#include <iostream>
+
+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();
+}

grabber.h

@@ -0,0 +1,28 @@
+#ifndef GRABBER_H
+#define GRABBER_H
+
+#include <QObject>
+#include <QThread>
+
+class Grabber : public QThread
+{
+  Q_OBJECT
+public:
+  Grabber(QObject *parent = nullptr) : QThread(parent) {}
+
+  void run() override;
+  void stop();
+
+private:
+  bool stop_request = false;
+
+public slots:
+  void requestStop() {
+    stop_request=true;
+  }
+
+signals:
+  void terminated();
+};
+
+#endif // GRABBER_H

pylonrecorder.cpp

@@ -19,6 +19,8 @@
 #include <QStatusBar>
 #include <QToolBar>
 #include <iostream>
+#include <chrono>
+#include "grabber.h"
 
 #if defined(QT_PRINTSUPPORT_LIB)
 #  include <QtPrintSupport/qtprintsupportglobal.h>
@@ -310,7 +312,7 @@ void PylonRecorder::updateActions() {
   disconnect_camera_action->setEnabled(pylon->isOpen());
   connect_camera_action->setEnabled(!pylon->isOpen());
   grab_still_action->setEnabled(pylon->isOpen());
-  grab_continuous_action->setEnabled(false);
+  grab_continuous_action->setEnabled(pylon->isOpen());
 }
 
 void PylonRecorder::scaleImage(double factor) {
@@ -343,6 +345,7 @@ void PylonRecorder::connectCamera() {
   pylon->openCamera(message);
   statusBar()->showMessage(QString::fromStdString(message));
   updateActions();
+  std::cerr << pylon->maxFrameRate() << std::endl;
 }
 
 
@@ -352,7 +355,31 @@ void PylonRecorder::disconnectCamera() {
   updateActions();
 }
 
-void PylonRecorder::startRecording() {}
+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);
+}
 
 void PylonRecorder::stopRecording() {}
 

pylonrecorder.h

@@ -3,6 +3,7 @@
 
 #include <QMainWindow>
 #include "pylonwrapper.h"
+#include "imagebuffer.h"
 #include <QImage>
 #if defined(QT_PRINTSUPPORT_LIB)
 #  include <QtPrintSupport/qtprintsupportglobal.h>
@@ -65,6 +66,7 @@ private:
     QScrollArea *scrollArea;
     double scaleFactor = 1;
     PylonWrapper *pylon;
+    ImageBuffer buffer;
 
 #if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
     QPrinter printer;

recorder.pro

@@ -3,11 +3,13 @@ requires(qtConfig(filedialog))
 qtHaveModule(printsupport): QT += gui printsupport
 
 HEADERS       = \
+                grabber.h \
                 imagebuffer.h \
                 myimage.h \
                 pylonrecorder.h \
                 pylonwrapper.h
 SOURCES       = \
+                grabber.cpp \
                 imagebuffer.cpp \
                 myimage.cpp \
                 pylonrecorder.cpp \