1///////////////////////////////////////////////////////////////////////////
2//
3// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
4// Digital Ltd. LLC
5//
6// All rights reserved.
7//
8// Redistribution and use in source and binary forms, with or without
9// modification, are permitted provided that the following conditions are
10// met:
11// *       Redistributions of source code must retain the above copyright
12// notice, this list of conditions and the following disclaimer.
13// *       Redistributions in binary form must reproduce the above
14// copyright notice, this list of conditions and the following disclaimer
15// in the documentation and/or other materials provided with the
16// distribution.
17// *       Neither the name of Industrial Light & Magic nor the names of
18// its contributors may be used to endorse or promote products derived
19// from this software without specific prior written permission.
20//
21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33///////////////////////////////////////////////////////////////////////////
34
35
36#ifndef INCLUDED_IMF_TILE_OFFSETS_H
37#define INCLUDED_IMF_TILE_OFFSETS_H
38
39//-----------------------------------------------------------------------------
40//
41//	class TileOffsets
42//
43//-----------------------------------------------------------------------------
44
45#include <ImfTileDescription.h>
46#include <ImfInt64.h>
47#include <vector>
48
49namespace Imf {
50
51class IStream;
52class OStream;
53
54
55class TileOffsets
56{
57  public:
58
59    TileOffsets (LevelMode mode = ONE_LEVEL,
60		 int numXLevels = 0,
61		 int numYLevels = 0,
62		 const int *numXTiles = 0,
63		 const int *numYTiles = 0);
64
65    // --------
66    // File I/O
67    // --------
68
69    void		readFrom (IStream &is, bool &complete);
70    Int64		writeTo (OStream &os) const;
71
72
73    //-----------------------------------------------------------
74    // Test if the tileOffsets array is empty (all entries are 0)
75    //-----------------------------------------------------------
76
77    bool		isEmpty () const;
78
79
80    //-----------------------
81    // Access to the elements
82    //-----------------------
83
84    Int64 &		operator () (int dx, int dy, int lx, int ly);
85    Int64 &		operator () (int dx, int dy, int l);
86    const Int64 &	operator () (int dx, int dy, int lx, int ly) const;
87    const Int64 &	operator () (int dx, int dy, int l) const;
88
89  private:
90
91    void		findTiles (IStream &is);
92    void		reconstructFromFile (IStream &is);
93    bool		readTile (IStream &is);
94    bool		anyOffsetsAreInvalid () const;
95    bool		isValidTile (int dx, int dy, int lx, int ly) const;
96
97    LevelMode		_mode;
98    int			_numXLevels;
99    int			_numYLevels;
100
101    std::vector<std::vector<std::vector <Int64> > > _offsets;
102};
103
104
105} // namespace Imf
106
107#endif
108