/*  * CVS identifier: *  * $Id: GuardBitsSpec.java,v 1.13 2000/09/19 14:11:01 grosbois Exp $ *  * Class:                   GuardBitsSpec *  * Description:             Guard bits specifications *  * 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.quantization;import jj2000.j2k.util.*;import jj2000.j2k.*;import java.util.*;/** * This class extends ModuleSpec class in order to hold specifications about * number of guard bits in each tile-component. * * @see ModuleSpec * */public class GuardBitsSpec extends ModuleSpec{    /**      * Constructs an empty 'GuardBitsSpec' with specified number of tile and     * components. This constructor is called by the decoder.     *     * @param nt Number of tiles     *     * @param nc Number of components     *     * @param type the type of the specification module i.e. tile specific,     * component specific or both.     * */    public GuardBitsSpec(int nt, int nc, byte type){	super(nt,nc,type);    }    /**     * Constructs a new 'GuardBitsSpec' for the specified number of components     * and tiles and the arguments of "-Qguard_bits" option.     *     * @param nt The number of tiles     *     * @param nc The number of components     *     * @param type the type of the specification module i.e. tile specific,     * component specific or both.     *     * @param pl The ParameterList     * */    public GuardBitsSpec(int nt, int nc, byte type, ParameterList pl){        super(nt,nc,type);	String param = pl.getParameter("Qguard_bits");	if(param==null){	    throw new IllegalArgumentException("Qguard_bits option not "+                                               "specified");	}	// Parse argument	StringTokenizer stk = new StringTokenizer(param);	String word; // current word	byte curSpecType = SPEC_DEF; // Specification type of the	// current parameter	boolean[] tileSpec = null; // Tiles concerned by the specification	boolean[] compSpec = null; // Components concerned by the specification	Integer value; // value of the guard bits		while(stk.hasMoreTokens()){	    word = stk.nextToken().toLowerCase();	  	    switch(word.charAt(0)){	    case 't': // Tiles specification 		tileSpec = parseIdx(word,nTiles);		if(curSpecType==SPEC_COMP_DEF)		    curSpecType = SPEC_TILE_COMP;		else		    curSpecType = SPEC_TILE_DEF; 		break;	    case 'c': // Components specification		compSpec = parseIdx(word,nComp);		if(curSpecType==SPEC_TILE_DEF)		    curSpecType = SPEC_TILE_COMP;		else		    curSpecType = SPEC_COMP_DEF;		break;	    default: // Step size value		try{		    value = new Integer(word);		}		catch(NumberFormatException e){		    throw new IllegalArgumentException("Bad parameter for "+						       "-Qguard_bits option"+                                                       " : "+word);		}		if (value.floatValue() <= 0.0f) {		    throw new IllegalArgumentException("Guard bits value "+						       "must be positive : "+						       value);		}				if(curSpecType==SPEC_DEF){		    setDefault(value);		}		else if(curSpecType==SPEC_TILE_DEF){		    for(int i=tileSpec.length-1; i>=0; i--)			if(tileSpec[i]){			    setTileDef(i,value);                        }		}		else if(curSpecType==SPEC_COMP_DEF){		    for(int i=compSpec.length-1; i>=0; i--)			if(compSpec[i]){			    setCompDef(i,value);                        }		}		else{		    for(int i=tileSpec.length-1; i>=0; i--){			for(int j=compSpec.length-1; j>=0 ; j--){			    if(tileSpec[i] && compSpec[j]){				setTileCompVal(i,j,value);                            }			}		    }		}		// Re-initialize		curSpecType = SPEC_DEF;		tileSpec = null;		compSpec = null;		break;	    }	}        // Check that default value has been specified        if(getDefault()==null){            int ndefspec = 0;            for(int t=nt-1; t>=0; t--){                for(int c=nc-1; c>=0 ; c--){                    if(specValType[t][c] == SPEC_DEF){                        ndefspec++;                    }                }            }                        // If some tile-component have received no specification, it takes            // the default value defined in ParameterList            if(ndefspec!=0){                setDefault(new Integer(pl.getDefaultParameterList().                                       getParameter("Qguard_bits")));            }            else{                // All tile-component have been specified, takes the first                // tile-component value as default.                setDefault(getTileCompVal(0,0));                switch(specValType[0][0]){                case SPEC_TILE_DEF:                    for(int c=nc-1; c>=0; c--){                        if(specValType[0][c]==SPEC_TILE_DEF)                            specValType[0][c] = SPEC_DEF;                    }                    tileDef[0] = null;                    break;                case SPEC_COMP_DEF:                    for(int t=nt-1; t>=0; t--){                        if(specValType[t][0]==SPEC_COMP_DEF)                            specValType[t][0] = SPEC_DEF;                    }                    compDef[0] = null;                    break;                case SPEC_TILE_COMP:                    specValType[0][0] = SPEC_DEF;                    tileCompVal.put("t0c0",null);                    break;                }            }	}   }}