Better freeing of CameraSource

src/main.cpp

@@ -28,6 +28,7 @@
 #include "src/persistence/profilelocker.h"
 #include "src/widget/loginscreen.h"
 #include "src/widget/translator.h"
+#include "src/video/camerasource.h"
 #include <QApplication>
 #include <QCommandLineParser>
 #include <QDateTime>
@@ -275,6 +276,7 @@ int main(int argc, char *argv[])
     logFile = nullptr;
 #endif
 
+    CameraSource::destroyInstance();
     Nexus::destroyInstance();
     Settings::destroyInstance();
     qDebug() << "Clean exit with status"<<errorcode;

src/video/camerasource.cpp

@@ -51,6 +51,15 @@ CameraSource& CameraSource::getInstance()
     return *instance;
 }
 
+void CameraSource::destroyInstance()
+{
+    if (instance)
+    {
+        delete instance;
+        instance = nullptr;
+    }
+}
+
 void CameraSource::open()
 {
     open(CameraDevice::getDefaultDeviceName());
@@ -293,6 +302,8 @@ void CameraSource::closeDevice()
             continue;
         vframe->releaseFrame();
     }
+    freelist.clear();
+    freelist.squeeze();
 
     // Free our resources and close the device
     videoStreamIndex = -1;

src/video/camerasource.h

@@ -47,6 +47,7 @@ class CameraSource : public VideoSource
     Q_OBJECT
 public:
     static CameraSource& getInstance();
+    static void destroyInstance();
     /// Opens the source for the camera device in argument, in the settings, or the system default
     /// If a device is already open, the source will seamlessly switch to the new device
     void open();