PBRT
/home/felix/UBC/projects/AdaptiveLightfieldSampling/pbrt_v2/src/3rdparty/openexr-1.7.0/ImfTileOffsets.h
00001 
00002 //
00003 // Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
00004 // Digital Ltd. LLC
00005 // 
00006 // All rights reserved.
00007 // 
00008 // Redistribution and use in source and binary forms, with or without
00009 // modification, are permitted provided that the following conditions are
00010 // met:
00011 // *       Redistributions of source code must retain the above copyright
00012 // notice, this list of conditions and the following disclaimer.
00013 // *       Redistributions in binary form must reproduce the above
00014 // copyright notice, this list of conditions and the following disclaimer
00015 // in the documentation and/or other materials provided with the
00016 // distribution.
00017 // *       Neither the name of Industrial Light & Magic nor the names of
00018 // its contributors may be used to endorse or promote products derived
00019 // from this software without specific prior written permission. 
00020 // 
00021 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00022 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00023 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
00024 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
00025 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00027 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00028 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00029 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00030 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00031 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00032 //
00034 
00035 
00036 #ifndef INCLUDED_IMF_TILE_OFFSETS_H
00037 #define INCLUDED_IMF_TILE_OFFSETS_H
00038 
00039 //-----------------------------------------------------------------------------
00040 //
00041 //      class TileOffsets
00042 //
00043 //-----------------------------------------------------------------------------
00044 
00045 #include <ImfTileDescription.h>
00046 #include <ImfInt64.h>
00047 #include <vector>
00048 
00049 namespace Imf {
00050 
00051 class IStream;
00052 class OStream;
00053 
00054 
00055 class TileOffsets
00056 {
00057   public:
00058 
00059     TileOffsets (LevelMode mode = ONE_LEVEL,
00060                  int numXLevels = 0,
00061                  int numYLevels = 0,
00062                  const int *numXTiles = 0,
00063                  const int *numYTiles = 0);    
00064 
00065     // --------
00066     // File I/O
00067     // --------
00068 
00069     void                readFrom (IStream &is, bool &complete);
00070     Int64               writeTo (OStream &os) const;
00071 
00072 
00073     //-----------------------------------------------------------
00074     // Test if the tileOffsets array is empty (all entries are 0)
00075     //-----------------------------------------------------------
00076 
00077     bool                isEmpty () const;
00078     
00079 
00080     //-----------------------
00081     // Access to the elements
00082     //-----------------------
00083 
00084     Int64 &             operator () (int dx, int dy, int lx, int ly);
00085     Int64 &             operator () (int dx, int dy, int l);
00086     const Int64 &       operator () (int dx, int dy, int lx, int ly) const;
00087     const Int64 &       operator () (int dx, int dy, int l) const;
00088 
00089   private:
00090   
00091     void                findTiles (IStream &is);
00092     void                reconstructFromFile (IStream &is);
00093     bool                readTile (IStream &is);
00094     bool                anyOffsetsAreInvalid () const;
00095     bool                isValidTile (int dx, int dy, int lx, int ly) const;
00096 
00097     LevelMode           _mode;
00098     int                 _numXLevels;
00099     int                 _numYLevels;
00100 
00101     std::vector<std::vector<std::vector <Int64> > > _offsets;
00102 };
00103 
00104 
00105 } // namespace Imf
00106 
00107 #endif