--- /dev/null
+///////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2004, 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.
+//
+///////////////////////////////////////////////////////////////////////////
+
+
+#ifndef INCLUDED_IMF_TILE_DESCRIPTION_H
+#define INCLUDED_IMF_TILE_DESCRIPTION_H
+
+//-----------------------------------------------------------------------------
+//
+// class TileDescription and enum LevelMode
+//
+//-----------------------------------------------------------------------------
+
+namespace Imf {
+
+
+enum LevelMode
+{
+ ONE_LEVEL = 0,
+ MIPMAP_LEVELS = 1,
+ RIPMAP_LEVELS = 2,
+
+ NUM_LEVELMODES // number of different level modes
+};
+
+
+enum LevelRoundingMode
+{
+ ROUND_DOWN = 0,
+ ROUND_UP = 1,
+
+ NUM_ROUNDINGMODES // number of different rounding modes
+};
+
+
+class TileDescription
+{
+ public:
+
+ unsigned int xSize; // size of a tile in the x dimension
+ unsigned int ySize; // size of a tile in the y dimension
+ LevelMode mode;
+ LevelRoundingMode roundingMode;
+
+ TileDescription (unsigned int xs = 32,
+ unsigned int ys = 32,
+ LevelMode m = ONE_LEVEL,
+ LevelRoundingMode r = ROUND_DOWN)
+ :
+ xSize (xs),
+ ySize (ys),
+ mode (m),
+ roundingMode (r)
+ {
+ // empty
+ }
+
+ bool
+ operator == (const TileDescription &other) const
+ {
+ return xSize == other.xSize &&
+ ySize == other.ySize &&
+ mode == other.mode &&
+ roundingMode == other.roundingMode;
+ }
+};
+
+
+} // namespace Imf
+
+#endif