cxImageDataContainer.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

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modification, are permitted provided that the following conditions are met:

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   this list of conditions and the following disclaimer.

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   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
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#include "cxImageDataContainer.h"
#include <QDir>
#include <vtkImageImport.h>
#include <vtkImageData.h>
#include "cxDataReaderWriter.h"
#include "cxLogger.h"
#include "cxTypeConversions.h"
#include "cxUtilHelpers.h"

typedef vtkSmartPointer<class vtkImageImport> vtkImageImportPtr;

namespace cx
{

CachedImageData::CachedImageData(QString filename, vtkImageDataPtr image)
{
        mFilename = filename;
        mImageData = image;
}

CachedImageData::~CachedImageData()
{
}



vtkImageDataPtr CachedImageData::getImage()
{
        if (!mImageData)
        {
                mImageData = MetaImageReader().loadVtkImageData(mFilename);
        }
        return mImageData;
}

bool CachedImageData::purge()
{
                mImageData = vtkImageDataPtr();
                return true;
}


void ImageDataContainer::purgeAll()
{
        int count = 0;
        for (unsigned i=0; i<this->size(); ++i)
        {
                if (this->purge(i))
                        count++;
        }
//      double fraction = double(count)/this->size();
//      std::cout << QString("PurgeAll imagecache: purged %1\% of %2 frames.").arg(fraction).arg(this->size()) << std::endl;
}



CachedImageDataContainer::CachedImageDataContainer(QString baseFilename, int size) :
    mDeleteFilesOnRelease(false)
{
        QFileInfo info(baseFilename);

        for (int i=0; true; ++i)
        {
                QString file = info.absolutePath()+"/"+info.completeBaseName()+QString("_%1.mhd").arg(i);

                if (!QFileInfo(file).exists())
                        break;

                CachedImageDataPtr cache(new CachedImageData(file));
                mImages.push_back(cache);

                if (size>=0 && i>=size)
                        break;
        }

        if (size>=0)
        {
                CX_ASSERT(size == mImages.size());
        }
}

CachedImageDataContainer::CachedImageDataContainer() :
    mDeleteFilesOnRelease(false)
{
}

CachedImageDataContainer::CachedImageDataContainer(std::vector<QString> frames) :
    mDeleteFilesOnRelease(false)
{
        for (unsigned i=0; i<frames.size(); ++i)
                this->append(frames[i]);
}

void CachedImageDataContainer::append(QString filename)
{
        mImages.push_back(CachedImageDataPtr(new CachedImageData(filename)));
}

CachedImageDataContainer::~CachedImageDataContainer()
{
        if (mDeleteFilesOnRelease)
        {
                for (unsigned i=0; i<mImages.size(); ++i)
                {
                        QDir().remove(mImages[i]->getFilename());
                        QDir().remove(changeExtension(mImages[i]->getFilename(), "raw"));
                        QDir().remove(changeExtension(mImages[i]->getFilename(), "zraw"));
                }
        }
}

vtkImageDataPtr CachedImageDataContainer::get(unsigned index)
{
        CX_ASSERT(index < this->size());
        CX_ASSERT(mImages[index]);

        if (index >= this->size())
        {
                std::cout << QString("Attempt to call index %1, size=%2").arg(index).arg(this->size()) << std::endl;
        }
//      int* a = NULL;
//      *a = 5;
        vtkImageDataPtr retval = mImages[index]->getImage();
        mImages[index]->purge();
        return retval;
}

QString CachedImageDataContainer::getFilename(unsigned index)
{
        return mImages[index]->getFilename();
}


unsigned CachedImageDataContainer::size() const
{
        return (unsigned)mImages.size();
}


SplitFramesContainer::SplitFramesContainer(vtkImageDataPtr image3D)
{
        mOptionalWholeBase = image3D;
        mImages.resize(image3D->GetDimensions()[2]);

        for (int i=0; i<mImages.size(); ++i)
        {
                vtkImageImportPtr import = vtkImageImportPtr::New();

                import->SetImportVoidPointer(image3D->GetScalarPointer(0,0,i));
                import->SetDataScalarType(image3D->GetScalarType());
                import->SetDataSpacing(image3D->GetSpacing());
                import->SetNumberOfScalarComponents(image3D->GetNumberOfScalarComponents());
//              int* extent = image3D->GetWholeExtent();
//              int* extent = image3D->GetExtent();
                IntBoundingBox3D extent(image3D->GetExtent());
                extent[4] = 0;
                extent[5] = 0;
                import->SetWholeExtent(extent.data());
                import->SetDataExtentToWholeExtent();

                import->Update();
                mImages[i] = import->GetOutput();

//              std::cout << "SplitFramesContainer " << i << std::endl;
//              std::cout << "===================================" << std::endl;
//              mImages[i]->Print(std::cout);
        }
}

vtkImageDataPtr SplitFramesContainer::get(unsigned index)
{
        return mImages[index];
}

unsigned SplitFramesContainer::size() const
{
        return (unsigned)mImages.size();
}



FramesDataContainer::FramesDataContainer(std::vector<vtkImageDataPtr> images)
{
        mImages = images;
}

vtkImageDataPtr FramesDataContainer::get(unsigned index)
{
        return mImages[index];
}

unsigned FramesDataContainer::size() const
{
        return mImages.size();
}

} // namespace cx