///////////////////////////////////////////////////////////////////////////

//

// Copyright (c) 2014, Industrial Light & Magic, a division of Lucas

// Digital Ltd. LLC

// 

// All rights reserved.

// 

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

// *       Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

// *       Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

// *       Neither the name of Industrial Light & Magic nor the names of

// its contributors may be used to endorse or promote products derived

// from this software without specific prior written permission. 

// 

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//

///////////////////////////////////////////////////////////////////////////

//----------------------------------------------------------------------------

//

//      OpenEXR file I/O for deep images.

//

//----------------------------------------------------------------------------

#include "ImfImageIO.h"

#include "ImfFlatImageIO.h"

#include "ImfDeepImageIO.h"

#include <ImfMultiPartInputFile.h>

#include <ImfHeader.h>

#include <ImfTestFile.h>

#include <ImfPartType.h>

#include <Iex.h>

using namespace IMATH_NAMESPACE;

using namespace IEX_NAMESPACE;

using namespace std;

OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_ENTER

void

saveImage

    (const string &fileName,

     const Header &hdr,

     const Image &img,

     DataWindowSource dws)

{

    if (const FlatImage *fimg = dynamic_cast <const FlatImage *> (&img))

    {

        if (fimg->levelMode() != ONE_LEVEL || hdr.hasTileDescription())

            saveFlatTiledImage (fileName, hdr, *fimg, dws);

        else

            saveFlatScanLineImage (fileName, hdr, *fimg, dws);

    }

    if (const DeepImage *dimg = dynamic_cast <const DeepImage *> (&img))

    {

        if (dimg->levelMode() != ONE_LEVEL || hdr.hasTileDescription())

            saveDeepTiledImage (fileName, hdr, *dimg, dws);

        else

            saveDeepScanLineImage (fileName, hdr, *dimg, dws);

    }

}

void

saveImage (const string &fileName, const Image &img)

{

    Header hdr;

    hdr.displayWindow() = img.dataWindow();

    saveImage (fileName, hdr, img);

}

Image *

loadImage (const string &fileName, Header &hdr)

{

    bool tiled, deep, multiPart;

    if (!isOpenExrFile (fileName.c_str(), tiled, deep, multiPart))

    {

        THROW (ArgExc, "Cannot load image file " << fileName << ".  "

                       "The file is not an OpenEXR file.");

    }

    if (multiPart)

    {

        THROW (ArgExc, "Cannot load image file " << fileName << ".  "

                       "Multi-part file loading is not supported.");

    }

    //XXX TODO: the tiled flag obtained above is unreliable;

    // open the file as a multi-part file and inspect the header.

    // Can the IlmImf library be fixed?

    {

        MultiPartInputFile mpi (fileName.c_str());

        tiled = (mpi.parts() > 0 &&

                 mpi.header(0).hasType() &&

                 isTiled (mpi.header(0).type()));

    }

    Image *img = 0;

    try

    {

        if (deep)

        {

            DeepImage *dimg = new DeepImage;

            img = dimg;

            if (tiled)

                loadDeepTiledImage (fileName, hdr, *dimg);

            else

                loadDeepScanLineImage (fileName, hdr, *dimg);

        }

        else

        {

            FlatImage *fimg = new FlatImage;

            img = fimg;

            if (tiled)

                loadFlatTiledImage (fileName, hdr, *fimg);

            else

                loadFlatScanLineImage (fileName, hdr, *fimg);

        }

    }

    catch (...)

    {

        delete img;

        throw;

    }

    return img;

}

Image *

loadImage (const string &fileName)

{

    Header hdr;

    return loadImage (fileName, hdr);

}

OPENEXR_IMF_INTERNAL_NAMESPACE_SOURCE_EXIT