cmdlnencoder.java

jpeg2000算法实现

/*
 * CVS identifier:
 *
 * $Id: CmdLnEncoder.java,v 1.53 2001/01/23 12:58:11 grosbois Exp $
 *
 * Class:                   CmdLnEncoder
 *
 * Description:             Runs JJ2000's encoder from the command line
 *
 *
 *
 * 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.encoder;

import jj2000.j2k.util.*;

import java.util.*;
import java.io.*;

/**
 * This class runs JJ2000's encoder from the command line interface. It parses
 * command-line arguments to fill a ParameterList object which will be
 * provided to an Encoder object.
 * */
public class CmdLnEncoder{
    /** The parameter list (arguments) */
    private ParameterList pl;

    /** The default parameter list (arguments) */
    private ParameterList defpl;

    /** The current encoder object */
    private Encoder enc;

    /**
     * The starting point of the program. It creates a CmdLnEncoder
     * object, initializes it, and performs coding.
     *
     * @param argv The command line arguments
     * */
    public static void main(String argv[]) {
        if (argv.length == 0) {
            FacilityManager.getMsgLogger()
                .println("CmdLnEncoder: JJ2000's JPEG 2000 Encoder\n"+
                         "    use jj2000.j2k.encoder.CmdLnEncoder -u "+
                         "to get help\n",0,0);
            System.exit(1);
        }

	new CmdLnEncoder(argv);
    }

    /**
     * Instantiates a command line encoder object, with the 'argv' command
     * line arguments. It also initializes the default parameters. If the
     * argument list is empty an IllegalArgumentException is thrown. If an
     * error occurs while parsing the arguments error messages are written to
     * stderr and the run exit code is set to non-zero, see getExitCode()
     *
     * @exception IllegalArgumentException If 'argv' is empty
     *
     * @see Encoder#getExitCode
     * */
    public CmdLnEncoder(String argv[]) {
        // Initialize default parameters
        defpl = new ParameterList();
	String[][] param = Encoder.getAllParameters();

        for (int i=param.length-1; i>=0; i--) {
	    if(param[i][3]!=null){
		defpl.put(param[i][0],param[i][3]);
            }
        }

        // Create parameter list using defaults
        pl = new ParameterList(defpl);

        if (argv.length == 0 ) {
            throw new IllegalArgumentException("No arguments!");
        }

        // Parse arguments from argv
        try {
            pl.parseArgs(argv);
        }
        catch (StringFormatException e) {
            System.err.println("An error occured while parsing the "+
                               "arguments:\n"+e.getMessage());
            return;
        }

        // Parse the arguments from some file?
        if (pl.getParameter("pfile") != null) {
            // Load parameters from file
            ParameterList tmpPl = new ParameterList();
            InputStream is;
            try {
                is = new FileInputStream(pl.getParameter("pfile"));
                is = new BufferedInputStream(is);
                tmpPl.load(is);
            }
            catch (FileNotFoundException e) {
                System.err.println("Could not load the argument file " +
				   pl.getParameter("pfile"));
                return;
            }
            catch (IOException e) {
                System.err.println("An error ocurred while reading from the "+
                                   "argument file " + pl.getParameter("pfile"));
                return;
            }
            try {
                is.close();
            }
            catch (IOException e) {
                System.out.println("[WARNING] Could not close the argument file"+
				   " after reading");
            }
            Enumeration enum = tmpPl.keys();
            String str;

            while(enum.hasMoreElements()){
                str = (String)enum.nextElement();
                if(pl.get(str)==null){
                    pl.put(str,tmpPl.get(str));
                }
            }
        }
     
	// **** Check parameters ****
	try {
	    pl.checkList(Encoder.vprfxs,pl.toNameArray(param));
	}
	catch (IllegalArgumentException e) {
	    System.err.println(e.getMessage());
	    return;
	}

	// Instantiate encoder
        enc = new Encoder(pl);
        if (enc.getExitCode() != 0) { // An error ocurred
            System.exit(enc.getExitCode());
        }
        // Run the encoder
        try {
            enc.run();
        }
        catch (Throwable e) {
            e.printStackTrace();
        }
        finally {
            if (enc.getExitCode() != 0) {
                System.exit(enc.getExitCode());
            }
        }
    }
}