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
37#ifndef INCLUDED_IMF_OPAQUE_ATTRIBUTE_H
38#define INCLUDED_IMF_OPAQUE_ATTRIBUTE_H
39
40//-----------------------------------------------------------------------------
41//
42//	class OpaqueAttribute
43//
44//	When an image file is read, OpqaqueAttribute objects are used
45//	to hold the values of attributes whose types are not recognized
46//	by the reading program.  OpaqueAttribute objects can be read
47//	from an image file, copied, and written back to to another image
48//	file, but their values are inaccessible.
49//
50//-----------------------------------------------------------------------------
51
52#include <ImfAttribute.h>
53#include <ImfArray.h>
54
55namespace Imf {
56
57
58class OpaqueAttribute: public Attribute
59{
60  public:
61
62    //----------------------------
63    // Constructors and destructor
64    //----------------------------
65
66    OpaqueAttribute (const char typeName[]);
67    OpaqueAttribute (const OpaqueAttribute &other);
68    virtual ~OpaqueAttribute ();
69
70
71    //-------------------------------
72    // Get this attribute's type name
73    //-------------------------------
74
75    virtual const char *	typeName () const;
76
77
78    //------------------------------
79    // Make a copy of this attribute
80    //------------------------------
81
82    virtual Attribute *		copy () const;
83
84
85    //----------------
86    // I/O and copying
87    //----------------
88
89    virtual void		writeValueTo (OStream &os,
90					      int version) const;
91
92    virtual void		readValueFrom (IStream &is,
93					       int size,
94					       int version);
95
96    virtual void		copyValueFrom (const Attribute &other);
97
98
99  private:
100
101    Array<char>			_typeName;
102    long			_dataSize;
103    Array<char>			_data;
104};
105
106
107} // namespace Imf
108
109// Metrowerks compiler wants the .cpp file inlined, too
110#ifdef __MWERKS__
111#include <ImfOpaqueAttribute.cpp>
112#endif
113
114#endif
115