///////////////////////////////////////////////////////////////////////////

//

// 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

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///////////////////////////////////////////////////////////////////////////

#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