2e87329e3b
* CSJ2K does not have a helper function for encoding at the moment! Need to look into that git-svn-id: http://libopenmetaverse.googlecode.com/svn/libopenmetaverse/trunk@3143 52acb1d6-8a22-11de-b505-999d5b087335
321 lines
10 KiB
C#
321 lines
10 KiB
C#
/*
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* CVS identifier:
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*
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* $Id: WTDecompSpec.java,v 1.9 2000/09/05 09:26:06 grosbois Exp $
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*
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* Class: WTDecompSpec
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*
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* Description: <short description of class>
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*
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*
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*
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* COPYRIGHT:
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*
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* This software module was originally developed by Raphaël Grosbois and
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* Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
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* Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
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* Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
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* Centre France S.A) in the course of development of the JPEG2000
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* standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
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* software module is an implementation of a part of the JPEG 2000
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* Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
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* Systems AB and Canon Research Centre France S.A (collectively JJ2000
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* Partners) agree not to assert against ISO/IEC and users of the JPEG
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* 2000 Standard (Users) any of their rights under the copyright, not
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* including other intellectual property rights, for this software module
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* with respect to the usage by ISO/IEC and Users of this software module
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* or modifications thereof for use in hardware or software products
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* claiming conformance to the JPEG 2000 Standard. Those intending to use
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* this software module in hardware or software products are advised that
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* their use may infringe existing patents. The original developers of
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* this software module, JJ2000 Partners and ISO/IEC assume no liability
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* for use of this software module or modifications thereof. No license
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* or right to this software module is granted for non JPEG 2000 Standard
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* conforming products. JJ2000 Partners have full right to use this
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* software module for his/her own purpose, assign or donate this
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* software module to any third party and to inhibit third parties from
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* using this software module for non JPEG 2000 Standard conforming
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* products. This copyright notice must be included in all copies or
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* derivative works of this software module.
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*
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* Copyright (c) 1999/2000 JJ2000 Partners.
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*
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*
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*
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*/
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using System;
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using CSJ2K.j2k;
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namespace CSJ2K.j2k.wavelet
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{
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/// <summary> This class holds the decomposition type to be used in each part of the
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/// image; the default one, the component specific ones, the tile default ones
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/// and the component-tile specific ones.
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///
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/// <P>The decomposition type identifiers values are the same as in the
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/// codestream.
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///
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/// <P>The hierarchy is:<br>
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/// - Tile and component specific decomposition<br>
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/// - Tile specific default decomposition<br>
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/// - Component main default decomposition<br>
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/// - Main default decomposition<br>
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///
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/// <P>At the moment tiles are not supported by this class.
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///
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/// </summary>
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public class WTDecompSpec
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{
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/// <summary> Returns the main default decomposition type.
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///
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/// </summary>
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/// <returns> The main default decomposition type.
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///
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///
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///
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/// </returns>
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virtual public int MainDefDecompType
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{
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get
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{
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return mainDefDecompType;
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}
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}
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/// <summary> Returns the main default decomposition number of levels.
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///
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/// </summary>
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/// <returns> The main default decomposition number of levels.
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///
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///
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///
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/// </returns>
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virtual public int MainDefLevels
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{
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get
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{
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return mainDefLevels;
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}
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}
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/// <summary> ID for the dyadic wavelet tree decomposition (also called
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/// "Mallat" in JPEG 2000): 0x00.
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/// </summary>
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public const int WT_DECOMP_DYADIC = 0;
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/// <summary> ID for the SPACL (as defined in JPEG 2000) wavelet tree
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/// decomposition (1 level of decomposition in the high bands and
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/// some specified number for the lowest LL band): 0x02.
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/// </summary>
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public const int WT_DECOMP_SPACL = 2;
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/// <summary> ID for the PACKET (as defined in JPEG 2000) wavelet tree
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/// decomposition (2 levels of decomposition in the high bands and
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/// some specified number for the lowest LL band): 0x01.
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/// </summary>
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public const int WT_DECOMP_PACKET = 1;
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/// <summary>The identifier for "main default" specified decomposition </summary>
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public const byte DEC_SPEC_MAIN_DEF = 0;
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/// <summary>The identifier for "component default" specified decomposition </summary>
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public const byte DEC_SPEC_COMP_DEF = 1;
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/// <summary>The identifier for "tile specific default" specified decomposition </summary>
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public const byte DEC_SPEC_TILE_DEF = 2;
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/// <summary>The identifier for "tile and component specific" specified
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/// decomposition
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/// </summary>
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public const byte DEC_SPEC_TILE_COMP = 3;
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/// <summary>The spec type for each tile and component. The first index is the
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/// component index, the second is the tile index. NOTE: The tile specific
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/// things are not supported yet.
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/// </summary>
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// Use byte to save memory (no need for speed here).
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private byte[] specValType;
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/// <summary>The main default decomposition </summary>
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private int mainDefDecompType;
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/// <summary>The main default number of decomposition levels </summary>
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private int mainDefLevels;
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/// <summary>The component main default decomposition, for each component. </summary>
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private int[] compMainDefDecompType;
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/// <summary>The component main default decomposition levels, for each component </summary>
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private int[] compMainDefLevels;
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/// <summary> Constructs a new 'WTDecompSpec' for the specified number of components
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/// and tiles, with the given main default decomposition type and number of
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/// levels.
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///
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/// <P>NOTE: The tile specific things are not supported yet
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///
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/// </summary>
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/// <param name="nc">The number of components
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///
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/// </param>
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/// <param name="nt">The number of tiles
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///
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/// </param>
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/// <param name="dec">The main default decomposition type
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///
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/// </param>
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/// <param name="lev">The main default number of decomposition levels
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///
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///
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///
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/// </param>
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public WTDecompSpec(int nc, int dec, int lev)
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{
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mainDefDecompType = dec;
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mainDefLevels = lev;
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specValType = new byte[nc];
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}
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/// <summary> Sets the "component main default" decomposition type and number of
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/// levels for the specified component. Both 'dec' and 'lev' can not be
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/// negative at the same time.
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///
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/// </summary>
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/// <param name="n">The component index
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///
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/// </param>
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/// <param name="dec">The decomposition type. If negative then the main default is
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/// used.
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///
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/// </param>
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/// <param name="lev">The number of levels. If negative then the main defaul is
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/// used.
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///
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///
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///
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/// </param>
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public virtual void setMainCompDefDecompType(int n, int dec, int lev)
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{
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if (dec < 0 && lev < 0)
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{
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throw new System.ArgumentException();
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}
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// Set spec type and decomp
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specValType[n] = DEC_SPEC_COMP_DEF;
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if (compMainDefDecompType == null)
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{
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compMainDefDecompType = new int[specValType.Length];
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compMainDefLevels = new int[specValType.Length];
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}
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compMainDefDecompType[n] = (dec >= 0)?dec:mainDefDecompType;
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compMainDefLevels[n] = (lev >= 0)?lev:mainDefLevels;
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// For the moment disable it since other parts of JJ2000 do not
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// support this
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throw new NotImplementedException("Currently, in JJ2000, all components " + "and tiles must have the same " + "decomposition type and number of " + "levels");
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}
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/// <summary> Returns the type of specification for the decomposition in the
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/// specified component and tile. The specification type is one of:
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/// 'DEC_SPEC_MAIN_DEF', 'DEC_SPEC_COMP_DEF', 'DEC_SPEC_TILE_DEF',
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/// 'DEC_SPEC_TILE_COMP'.
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///
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/// <P>NOTE: The tile specific things are not supported yet
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///
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/// </summary>
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/// <param name="n">The component index
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///
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/// </param>
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/// <param name="t">The tile index, in raster scan order.
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///
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/// </param>
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/// <returns> The specification type for component 'n' and tile 't'.
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///
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///
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///
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/// </returns>
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public virtual byte getDecSpecType(int n)
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{
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return specValType[n];
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}
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/// <summary> Returns the decomposition type to be used in component 'n' and tile
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/// 't'.
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///
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/// <P>NOTE: The tile specific things are not supported yet
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///
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/// </summary>
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/// <param name="n">The component index.
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///
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/// </param>
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/// <param name="t">The tile index, in raster scan order
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///
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/// </param>
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/// <returns> The decomposition type to be used.
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///
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///
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///
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/// </returns>
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public virtual int getDecompType(int n)
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{
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switch (specValType[n])
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{
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case DEC_SPEC_MAIN_DEF:
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return mainDefDecompType;
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case DEC_SPEC_COMP_DEF:
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return compMainDefDecompType[n];
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case DEC_SPEC_TILE_DEF:
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throw new NotImplementedException();
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case DEC_SPEC_TILE_COMP:
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throw new NotImplementedException();
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default:
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throw new System.ApplicationException("Internal JJ2000 error");
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}
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}
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/// <summary> Returns the decomposition number of levels in component 'n' and tile
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/// 't'.
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///
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/// <P>NOTE: The tile specific things are not supported yet
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///
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/// </summary>
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/// <param name="n">The component index.
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///
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/// </param>
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/// <param name="t">The tile index, in raster scan order
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///
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/// </param>
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/// <returns> The decomposition number of levels.
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///
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///
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///
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/// </returns>
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public virtual int getLevels(int n)
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{
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switch (specValType[n])
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{
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case DEC_SPEC_MAIN_DEF:
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return mainDefLevels;
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case DEC_SPEC_COMP_DEF:
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return compMainDefLevels[n];
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case DEC_SPEC_TILE_DEF:
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throw new NotImplementedException();
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case DEC_SPEC_TILE_COMP:
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throw new NotImplementedException();
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default:
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throw new System.ApplicationException("Internal JJ2000 error");
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}
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}
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}
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} |