001/*
002 * $RCSfile: ForwWTDataProps.java,v $
003 * $Revision: 1.1 $
004 * $Date: 2005/02/11 05:02:30 $
005 * $State: Exp $
006 *
007 * Class:                   ForwWTDataProps
008 *
009 * Description:             Extends ImgData with forward wavelet specific
010 *                          things.
011 *
012 *
013 *
014 * COPYRIGHT:
015 *
016 * This software module was originally developed by Raphaël Grosbois and
017 * Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
018 * Askelöf (Ericsson Radio Systems AB); and Bertrand Berthelot, David
019 * Bouchard, Félix Henry, Gerard Mozelle and Patrice Onno (Canon Research
020 * Centre France S.A) in the course of development of the JPEG2000
021 * standard as specified by ISO/IEC 15444 (JPEG 2000 Standard). This
022 * software module is an implementation of a part of the JPEG 2000
023 * Standard. Swiss Federal Institute of Technology-EPFL, Ericsson Radio
024 * Systems AB and Canon Research Centre France S.A (collectively JJ2000
025 * Partners) agree not to assert against ISO/IEC and users of the JPEG
026 * 2000 Standard (Users) any of their rights under the copyright, not
027 * including other intellectual property rights, for this software module
028 * with respect to the usage by ISO/IEC and Users of this software module
029 * or modifications thereof for use in hardware or software products
030 * claiming conformance to the JPEG 2000 Standard. Those intending to use
031 * this software module in hardware or software products are advised that
032 * their use may infringe existing patents. The original developers of
033 * this software module, JJ2000 Partners and ISO/IEC assume no liability
034 * for use of this software module or modifications thereof. No license
035 * or right to this software module is granted for non JPEG 2000 Standard
036 * conforming products. JJ2000 Partners have full right to use this
037 * software module for his/her own purpose, assign or donate this
038 * software module to any third party and to inhibit third parties from
039 * using this software module for non JPEG 2000 Standard conforming
040 * products. This copyright notice must be included in all copies or
041 * derivative works of this software module.
042 *
043 * Copyright (c) 1999/2000 JJ2000 Partners.
044 *
045 *
046 *
047 */
048
049
050package jj2000.j2k.wavelet.analysis;
051
052import jj2000.j2k.image.*;
053import jj2000.j2k.wavelet.*;
054
055/**
056 * This interface extends the ImgData interface with methods that are
057 * necessary for forward wavelet data (i.e. data that is produced by a forward
058 * wavelet transform).
059 */
060public interface ForwWTDataProps extends ImgData {
061
062    /**
063     * Returns the reversibility of the given tile-component. Data is
064     * reversible when it is suitable for lossless and
065     * lossy-to-lossless compression.
066     *
067     * @param t Tile index
068     *
069     * @param c Component index
070     *
071     * @return true is the data is reversible, false if not.
072     *
073     *
074     * */
075    public boolean isReversible(int t,int c);
076
077    /**
078     * Returns a reference to the root of subband tree structure representing
079     * the subband decomposition for the specified tile-component.
080     *
081     * @param t The index of the tile.
082     *
083     * @param c The index of the component.
084     *
085     * @return The root of the subband tree structure, see Subband.
086     *
087     * @see SubbandAn
088     *
089     * @see Subband
090     * */
091    public SubbandAn getAnSubbandTree(int t,int c);
092
093    /**
094     * Returns the horizontal offset of the code-block partition. Allowable
095     * values are 0 and 1, nothing else.
096     * */
097    public int getCbULX();
098
099    /**
100     * Returns the vertical offset of the code-block partition. Allowable
101     * values are 0 and 1, nothing else.
102     * */
103    public int getCbULY();
104}