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  1. Qt
  2. QTBUG-85800

When open/close usb camera, there has Mega byte memory leak each time

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    Details

    • Type: Bug
    • Status: Need More Info
    • Priority: P3: Somewhat important
    • Resolution: Incomplete
    • Affects Version/s: 5.12.3
    • Fix Version/s: None
    • Component/s: Multimedia
    • Labels:
    • Platform/s:
      Linux/Yocto

      Description

      1.

      When I open/close camera in one process several time( create camera object and destroy camera object), I can see the used memory is increasing rapidly by "free" command.

       

      2.

      I checked qtmultimedia camerabinsession.cpp as follows:

      https://code.qt.io/cgit/qt/qtmultimedia.git/tree/src/plugins/gstreamer/camerabin/camerabinsession.cpp?h=5.12

      I found the constructor "news" several object, but there's no place to delete them.

      I guess this is some how the root cause memory leak issue(blame me if I am wrong).

        
       m_busHelper = new QGstreamerBusHelper(m_bus, this);    
      m_busHelper->installMessageFilter(this);    
      m_cameraControl = new CameraBinControl(this);    
      m_audioEncodeControl = new CameraBinAudioEncoder(this);    
      m_videoEncodeControl = new CameraBinVideoEncoder(this);    
      m_imageEncodeControl = new CameraBinImageEncoder(this);    
      m_recorderControl = new CameraBinRecorder(this);    
      m_mediaContainerControl = new CameraBinContainer(this);    
      m_cameraZoomControl = new CameraBinZoom(this);   
       m_imageProcessingControl = new CameraBinImageProcessing(this);   
       m_captureDestinationControl = new CameraBinCaptureDestination(this);    
      m_captureBufferFormatControl = new CameraBinCaptureBufferFormat(this);

       

      3. If this is the reason of memory leak, will it be resolved?

      Thank you very much!!!

       

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            Assignee:
            valentyn.doroshchuk Valentyn Doroshchuk
            Reporter:
            xing Xing Biao
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              Dates

              Created:
              Updated:
              Resolved:

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