precinfo.java

jpeg2000编解码

/*
 * CVS identifier:
 *
 * $Id: PrecInfo.java,v 1.1.1.1 2002/07/22 09:26:46 grosbois Exp $
 *
 * Class:                   PrecInfo
 *
 * Description:             Keeps information about a precinct
 *
 * COPYRIGHT:
 * 
 * This software module was originally developed by Rapha雔 Grosbois and
 * Diego Santa Cruz (Swiss Federal Institute of Technology-EPFL); Joel
 * Askel鰂 (Ericsson Radio Systems AB); and Bertrand Berthelot, David
 * Bouchard, F閘ix 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.
 * */
package jj2000.j2k.codestream;

/** 
 * Class that holds precinct coordinates and references to contained
 * code-blocks in each subband. 
 * */
public class PrecInfo {
    
    /** Precinct horizontal upper-left coordinate in the reference grid */
    public int rgulx;
    
    /** Precinct vertical upper-left coordinate in the reference grid */
    public int rguly;
    
    /** Precinct width reported in the reference grid */
    public int rgw;

    /** Precinct height reported in the reference grid */
    public int rgh;

    /** Precinct horizontal upper-left coordinate in the corresponding
     * resolution level*/
    public int ulx;

    /** Precinct vertical upper-left coordinate in the corresponding
     * resolution level*/
    public int uly;

    /** Precinct width in the corresponding resolution level */
    public int w;
    
    /** Precinct height in the corresponding resolution level */
    public int h;

    /** Resolution level index */
    public int r;

    /** Code-blocks belonging to this precinct in each subbands of the
     * resolution level */
    public CBlkCoordInfo[][][] cblk;

    /** Number of code-blocks in each subband belonging to this precinct */
    public int[] nblk;

    /** 
     * Class constructor.
     *
     * @param r Resolution level index.
     * @param ulx Precinct horizontal offset.
     * @param uly Precinct vertical offset.
     * @param w Precinct width.
     * @param h Precinct height.
     * @param rgulx Precinct horizontal offset in the image reference grid.
     * @param rguly Precinct horizontal offset in the image reference grid.
     * @param rgw Precinct width in the reference grid.
     * @param rgh Precinct height in the reference grid.
     * */
    public PrecInfo(int r,int ulx,int uly,int w,int h,int rgulx,int rguly,
                    int rgw,int rgh) {
        this.r = r;
        this.ulx = ulx;
        this.uly = uly;
        this.w = w;
        this.h = h;
        this.rgulx = rgulx;
        this.rguly = rguly;
        this.rgw = rgw;
        this.rgh = rgh;

        if (r==0) {
            cblk = new CBlkCoordInfo[1][][];
            nblk = new int[1];
        } else {
            cblk = new CBlkCoordInfo[4][][];
            nblk = new int[4];
        }
    }

    /** 
     * Returns PrecInfo object information in a String
     *
     * @return PrecInfo information 
     * */
    public String toString() {
        return "ulx="+ulx+",uly="+uly+",w="+w+",h="+h+",rgulx="+rgulx+
            ",rguly="+rguly+",rgw="+rgw+",rgh="+rgh;
    }
}