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loadImage.h

#ifndef INCLUDED_LOAD_IMAGE_H
#define INCLUDED_LOAD_IMAGE_H

//////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2004, Industrial Light & Magic, a division of Lucasfilm
// Entertainment Company Ltd.  Portions contributed and copyright held by
// others as indicated.  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
//       any other contributors to this software 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.
//
//////////////////////////////////////////////////////////////////////////////

//----------------------------------------------------------------------------
//
//    Functions to load OpenEXR images into a pixel array.
//
//----------------------------------------------------------------------------

#include <ImfRgba.h>
#include <ImfArray.h>
#include <ImathBox.h>


//
// Load "the image" from the specified image file.
// If the file is tiled, load the level (0,0) image.
//

void  loadImage (const char fileName[],
               Imath::Box2i &displayWindow,
               Imath::Box2i &dataWindow,
               float &pixelAspectRatio,
               Imf::Array<Imf::Rgba> &pixels);

//
// For a tiled image file, load the level (lx, ly) image.
//

void  loadTiledImage (const char fileName[],
                  int lx,
                  int ly,
                  Imath::Box2i &displayWindow,
                  Imath::Box2i &dataWindow,
                    float &pixelAspectRatio,
                  Imf::Array<Imf::Rgba> &pixels);

//
// Load the preview image from the specified image file.
//

void  loadPreviewImage (const char fileName[],
                    Imath::Box2i &displayWindow,
                    Imath::Box2i &dataWindow,
                    float &pixelAspectRatio,
                    Imf::Array<Imf::Rgba> &pixels);

//
// Load only the specified channel.
//

void  loadImageChannel (const char fileName[],
                    const char channelName[],
                    Imath::Box2i &displayWindow,
                    Imath::Box2i &dataWindow,
                    float &pixelAspectRatio,
                    Imf::Array<Imf::Rgba> &pixels);

//
// Load only the specified channel of level (lx, ly).
//

void  loadTiledImageChannel (const char fileName[],
                         const char channelName[],
                         int lx,
                         int ly,
                         Imath::Box2i &displayWindow,
                         Imath::Box2i &dataWindow,
                         float &pixelAspectRatio,
                         Imf::Array<Imf::Rgba> &pixels);

#endif

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