decoderspecs.java

jpeg2000算法实现

/*
 * CVS identifier:
 *
 * $Id: DecoderSpecs.java,v 1.22 2001/02/28 14:12:18 grosbois Exp $
 *
 * Class:                   DecoderSpecs
 *
 * Description:             Hold all decoder 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.decoder;

import jj2000.j2k.codestream.reader.*;
import jj2000.j2k.wavelet.synthesis.*;
import jj2000.j2k.quantization.*;
import jj2000.j2k.entropy.*;
import jj2000.j2k.wavelet.*;
import jj2000.j2k.image.*;
import jj2000.j2k.util.*;
import jj2000.j2k.roi.*;
import jj2000.j2k.*;

/** 
 * This class holds references to each module specifications used in the
 * decoding chain. This avoid big amount of arguments in method calls. A
 * specification contains values of each tile-component for one module. All
 * members must be instance of ModuleSpec class (or its children).
 *
 * @see ModuleSpec
 * */
public class DecoderSpecs{

    /** ROI maxshift value specifications */
    public MaxShiftSpec rois;

    /** Quantization type specifications */
    public QuantTypeSpec qts;

    /** Quantization normalized base step size specifications */
    public QuantStepSizeSpec qsss;

    /** Number of guard bits specifications */
    public GuardBitsSpec gbs;

    /** Analysis wavelet filters specifications */
    public SynWTFilterSpec wfs;

    /** Number of decomposition levels specifications */
    public IntegerSpec dls;

    /** Number of layers specifications */
    public IntegerSpec nls;

    /** Progression order specifications */
    public IntegerSpec pos;
    
    /** The Entropy decoder options specifications */
    public ModuleSpec ecopts;

    /** The component transformation specifications */
    public CompTransfSpec cts;

    /** The progression changes specifications */
    public ModuleSpec pcs;

    /** The error resilience specifications concerning the entropy
     * decoder */
    public ModuleSpec ers;
    
    /** Precinct partition specifications */
    public PrecinctSizeSpec pss;

    /** The Start Of Packet (SOP) markers specifications */
    public ModuleSpec sops;

    /** The End of Packet Headers (EPH) markers specifications */
    public ModuleSpec ephs;

    /** Code-blocks sizes specification */
    public CBlkSizeSpec cblks;

    /** Packed packet header specifications */
    public ModuleSpec pphs;

    /** 
     * Initialize all members with the given number of tiles and components.
     *
     * @param nt Number of tiles
     *
     * @param nc Number of components
     * */
    public DecoderSpecs(int nt,int nc){
        // Quantization
        qts  = new QuantTypeSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE_COMP);
        qsss = new QuantStepSizeSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE_COMP);
        gbs  = new GuardBitsSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE_COMP);

        // Wavelet transform
        wfs = new SynWTFilterSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE_COMP);
        dls = new IntegerSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE_COMP);

        // Component transformation
        cts = new CompTransfSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE_COMP);

        // Entropy decoder
        ecopts = new ModuleSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE_COMP);
        ers = new ModuleSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE_COMP);
        cblks = new CBlkSizeSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE_COMP);

        // Precinct partition
        pss = new PrecinctSizeSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE_COMP,dls);

        // Codestream
        nls  = new IntegerSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE);
        pos  = new IntegerSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE);
        pcs  = new ModuleSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE);
        sops = new ModuleSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE);
        ephs = new ModuleSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE);
        pphs = new ModuleSpec(nt,nc,ModuleSpec.SPEC_TYPE_TILE);
        pphs.setDefault(new Boolean(false));
    }
}