/* 
* CVS identifier:
* 
* $Id: CompTransfSpec.java,v 1.18 2001/04/10 14:23:26 grosbois Exp $
* 
* Class:                   CompTransfSpec
* 
* Description:             Component Transformation specification
* 
* 
* 
* COPYRIGHT:
* 
* This software module was originally developed by Raphaël Grosbois and
* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
* Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
* Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
* Centre France S.A) in the course of development of the JPEG2000
* standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
* software module is an implementation of a part of the JPEG 2000
* Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
* Systems AB and Canon Research Centre France S.A (collectively JJ2000
* Partners) agree not to assert against ISO/IEC and users of the JPEG
* 2000 Standard (Users) any of their rights under the copyright, not
* including other intellectual property rights, for this software module
* with respect to the usage by ISO/IEC and Users of this software module
* or modifications thereof for use in hardware or software products
* claiming conformance to the JPEG 2000 Standard. Those intending to use
* this software module in hardware or software products are advised that
* their use may infringe existing patents. The original developers of
* this software module, JJ2000 Partners and ISO/IEC assume no liability
* for use of this software module or modifications thereof. No license
* or right to this software module is granted for non JPEG 2000 Standard
* conforming products. JJ2000 Partners have full right to use this
* software module for his/her own purpose, assign or donate this
* software module to any third party and to inhibit third parties from
* using this software module for non JPEG 2000 Standard conforming
* products. This copyright notice must be included in all copies or
* derivative works of this software module.
* 
* Copyright (c) 1999/2000 JJ2000 Partners.
*  */
using System;
using CSJ2K.j2k.image.invcomptransf;
using CSJ2K.j2k.wavelet;
using CSJ2K.j2k.util;
using CSJ2K.j2k;
namespace CSJ2K.j2k.image
{
	
	/// <summary> This class extends the ModuleSpec class in order to hold tile
	/// specifications for multiple component transformation
	/// 
	/// </summary>
	/// <seealso cref="ModuleSpec">
	/// 
	/// </seealso>
	public class CompTransfSpec:ModuleSpec
	{
		/// <summary> Check if component transformation is used in any of the tiles. This
		/// method must not be used by the encoder.
		/// 
		/// </summary>
		/// <returns> True if a component transformation is used in at least on
		/// tile.
		/// 
		/// </returns>
		virtual public bool CompTransfUsed
		{
			get
			{
				if (((System.Int32) def) != InvCompTransf.NONE)
				{
					return true;
				}
				
				if (tileDef != null)
				{
					for (int t = nTiles - 1; t >= 0; t--)
					{
						if (tileDef[t] != null && (((System.Int32) tileDef[t]) != InvCompTransf.NONE))
						{
							return true;
						}
					}
				}
				return false;
			}
			
		}
		
		/// <summary> Constructs an empty 'CompTransfSpec' with the specified number of tiles
		/// and components. This constructor is called by the decoder. Note: The
		/// number of component is here for symmetry purpose. It is useless since
		/// only tile specifications are meaningful.
		/// 
		/// </summary>
		/// <param name="nt">Number of tiles
		/// 
		/// </param>
		/// <param name="nc">Number of components
		/// 
		/// </param>
		/// <param name="type">the type of the specification module i.e. tile specific,
		/// component specific or both.
		/// 
		/// </param>
		public CompTransfSpec(int nt, int nc, byte type):base(nt, nc, type)
		{
		}
	}
}