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ImfTiledMisc.h

///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
// 
// All rights reserved.
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// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
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// *       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
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// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission. 
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef INCLUDED_IMF_TILED_MISC_H
#define INCLUDED_IMF_TILED_MISC_H

//-----------------------------------------------------------------------------
//
//    Miscellaneous stuff related to tiled files
//
//-----------------------------------------------------------------------------

#include <ImathBox.h>
#include <ImfHeader.h>
#include <stdio.h>

namespace Imf {

int levelSize (int min, int max, int l, LevelRoundingMode rmode);

Imath::Box2i dataWindowForLevel (const TileDescription &tileDesc,
                         int minX, int maxX,
                         int minY, int maxY,
                         int lx, int ly);

Imath::Box2i dataWindowForTile (const TileDescription &tileDesc,
                        int minX, int maxX,
                        int minY, int maxY,
                        int dx, int dy,
                        int lx, int ly);

size_t calculateBytesPerPixel (const Header &header);

void precalculateTileInfo (const TileDescription& tileDesc,
                     int minX, int maxX,
                     int minY, int maxY,
                     int *&numXTiles, int *&numYTiles,
                     int &numXLevels, int &numYLevels);


} // namespace Imf

#endif

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