Method ImageAccessorBase

Modules/Core/src/DataManagement/mitkImageAccessorBase.cpp:41–122

}

mitk::ImageAccessorBase::ImageAccessorBase(ImageConstPointer image,
                                           const ImageDataItem *imageDataItem,
                                           int OptionFlags)
  : // m_Image(iP)
    //, imageDataItem(iDI)
    m_SubRegion(nullptr),
    m_Options(OptionFlags),
    m_CoherentMemory(false)
{
  m_Thread = CurrentThreadHandle();

  // Initialize WaitLock
  m_WaitLock = new ImageAccessorWaitLock();
  m_WaitLock->m_WaiterCount = 0;

  // Check validity of ImageAccessor

  // Is there an Image?
  /*
  if(!m_Image)
  {
    mitkThrow() << "Invalid ImageAccessor: No Image was specified in constructor of ImageAccessor";
  }
  */

  if (image)
  {
    // Make sure, that the Image is initialized properly
    if (image->m_Initialized == false)
    {
      if (image->GetSource().IsNull())
      {
        mitkThrow() << "ImageAccessor: No image source is defined";
      }
      image->m_ReadWriteLock.lock();
      if (image->GetSource()->Updating() == false)
      {
        image->GetSource()->UpdateOutputInformation();
      }
      image->m_ReadWriteLock.unlock();
    }
  }

  // Investigate 4 cases of possible image parts/regions

  // Case 1: No ImageDataItem and no Subregion => Whole Image is accessed
  if (imageDataItem == nullptr && m_SubRegion == nullptr)
  {
    m_CoherentMemory = true;

    // Organize first image channel
    image->m_ReadWriteLock.lock();
    imageDataItem = image->GetChannelData();
    image->m_ReadWriteLock.unlock();

    // Set memory area
    m_AddressBegin = imageDataItem->m_Data;
    m_AddressEnd = (unsigned char *)m_AddressBegin + imageDataItem->m_Size;