text: ///////////////////////////////////////////////////////////////////////////
  //
  // 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
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  // (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_OPAQUE_ATTRIBUTE_H
  #define INCLUDED_IMF_OPAQUE_ATTRIBUTE_H
  
  //-----------------------------------------------------------------------------
  //
  //	class OpaqueAttribute
  //
  //	When an image file is read, OpqaqueAttribute objects are used
  //	to hold the values of attributes whose types are not recognized
  //	by the reading program.  OpaqueAttribute objects can be read
  //	from an image file, copied, and written back to to another image
  //	file, but their values are inaccessible.
  //
  //-----------------------------------------------------------------------------
  
  #include "ImfAttribute.h"
  #include "ImfArray.h"
  #include "ImfNamespace.h"
  
  OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER
  
  
  class IMF_EXPORT OpaqueAttribute: public Attribute
  {
    public:
  
      //----------------------------
      // Constructors and destructor
      //----------------------------
  
      OpaqueAttribute (const char typeName[]);
      OpaqueAttribute (const OpaqueAttribute &other);
      virtual ~OpaqueAttribute ();
  
  
      //-------------------------------
      // Get this attribute's type name
      //-------------------------------
  
      virtual const char *	typeName () const;
      
  
      //------------------------------
      // Make a copy of this attribute
      //------------------------------
  
      virtual Attribute *		copy () const;
  
  
      //----------------
      // I/O and copying
      //----------------
  
      virtual void		writeValueTo (OPENEXR_IMF_INTERNAL_NAMESPACE::OStream &os,
  					      int version) const;
  
      virtual void		readValueFrom (OPENEXR_IMF_INTERNAL_NAMESPACE::IStream &is,
  					       int size,
  					       int version);
  
      virtual void		copyValueFrom (const Attribute &other);
  
  
    private:
  
      Array<char>			_typeName;
      long			_dataSize;
      Array<char>			_data;
  };
  
  
  OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT
  
  #endif
  