#ifndef _MIffTag
#define _MIffTag
//
//-
// ==========================================================================
// Copyright (C) 1995 - 2006 Autodesk, Inc., and/or its licensors.  All 
// rights reserved.
// 
// The coded instructions, statements, computer programs, and/or related 
// material (collectively the "Data") in these files contain unpublished 
// information proprietary to Autodesk, Inc. ("Autodesk") and/or its 
// licensors,  which is protected by U.S. and Canadian federal copyright law 
// and by international treaties.
// 
// The Data may not be disclosed or distributed to third parties or be 
// copied or duplicated, in whole or in part, without the prior written 
// consent of Autodesk.
// 
// The copyright notices in the Software and this entire statement, 
// including the above license grant, this restriction and the following 
// disclaimer, must be included in all copies of the Software, in whole 
// or in part, and all derivative works of the Software, unless such copies 
// or derivative works are solely in the form of machine-executable object 
// code generated by a source language processor.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND. 
// AUTODESK DOES NOT MAKE AND HEREBY DISCLAIMS ANY EXPRESS OR IMPLIED 
// WARRANTIES INCLUDING, BUT NOT LIMITED TO, THE WARRANTIES OF 
// NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, 
// OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE. IN NO 
// EVENT WILL AUTODESK AND/OR ITS LICENSORS BE LIABLE FOR ANY LOST 
// REVENUES, DATA, OR PROFITS, OR SPECIAL, DIRECT, INDIRECT, OR 
// CONSEQUENTIAL DAMAGES, EVEN IF AUTODESK AND/OR ITS LICENSORS HAS 
// BEEN ADVISED OF THE POSSIBILITY OR PROBABILITY OF SUCH DAMAGES. 
// ==========================================================================
//+
//
// CLASS:    MIffTag
//
// *****************************************************************************
//
// CLASS DESCRIPTION (MIffTag)
//
// Class MIffTag is used to create the 4 byte tags that are used to
// distinguish the different block types within an IFF file.
//
// *****************************************************************************

#if defined __cplusplus

// *****************************************************************************

// INCLUDED HEADER FILES

#include <maya/MObject.h>
#include <maya/MString.h>
#include <maya/MTypes.h>

// *****************************************************************************
// CLASS DECLARATION (MIffTag)
/// Encapsulates IFF's 4 character block structure
/**
*/

#ifdef _WIN32
#pragma warning(disable: 4522)
#endif // _WIN32

class OPENMAYA_EXPORT MIffTag 
{ 
public:
	///
	MIffTag();

	///
	MIffTag(unsigned char a, unsigned char b, unsigned char c, unsigned char d);

	///
	MIffTag(unsigned int tag);

	///
	~MIffTag();

	///
	bool  operator==( const MIffTag& tag ) const;

	/// Marks the start of a group of data blocks. 
	static const MIffTag kFORM;

	/// Defines an unsorted group of FORM, e.g. images or sounds.
    static const MIffTag kCAT;
	
	/// Defines a sorted group of FORM, e.g. sequence of images
    static const MIffTag kLIST;

	/// Marks the start of a group of data blocks containing
	/// properties shared between forms that are a part of a LIST
    static const MIffTag kPROP;
	
	/// Four byte aligned FORM block
	static const MIffTag kFOR4;

	/// Eight byte aligned FORM block 
    static const MIffTag kFOR8;
	
	/// Four byte aligned CAT block 
    static const MIffTag kCAT4;
	
	/// Eight byte aligned CAT block 
    static const MIffTag kCAT8;

	/// Four byte aligned LIST block 
    static const MIffTag kLIS4;

	/// Eight byte aligned LIST block 
    static const MIffTag kLIS8;

	/// Four byte aligned PROP block 
    static const MIffTag kPRO4;

	/// Eight byte aligned PROP block 
    static const MIffTag kPRO8;

protected:
	// No protected members

private:
	friend class MIffFile;
	
	union { 
		int			 _force_alignment;
		char		 f_data[4];
	};
};

#ifdef _WIN32
#pragma warning(default: 4522)
#endif // _WIN32

// *****************************************************************************
#endif /* __cplusplus */
#endif /* _MIffTag */
