zipcity.java

此源代码为java语音识别的开源系统

/*
 * Copyright 1999-2004 Carnegie Mellon University.
 * Portions Copyright 2004 Sun Microsystems, Inc.
 * Portions Copyright 2004 Mitsubishi Electric Research Laboratories.
 * All Rights Reserved.  Use is subject to license terms.
 *
 * See the file "license.terms" for information on usage and
 * redistribution of this file, and for a DISCLAIMER OF ALL
 * WARRANTIES.
 *
 */

package demo.sphinx.zipcity;

import edu.cmu.sphinx.recognizer.Recognizer;
import edu.cmu.sphinx.result.Result;
import edu.cmu.sphinx.util.props.ConfigurationManager;
import edu.cmu.sphinx.util.props.PropertyException;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Image;
import java.awt.LayoutManager;
import java.awt.Toolkit;
import java.awt.Graphics;
import java.awt.FontMetrics;
import java.awt.Font;
import java.awt.geom.Rectangle2D;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.border.EmptyBorder;

/**
 * A simple demonstration application for Sphinx-4, suitable for use
 * as a WebStart application. ZipCity listens for spoken US zip codes 
 * and shows the city/state associated with the code.
 */
public class ZipCity extends JFrame {
    private final static Color backgroundColor = new Color(0x42, 0x42, 0x42);
    private final static Color NORM_COLOR = new Color(0x72, 0x72, 0x82);
    private final static Color HIGHLIGHT_COLOR = new Color(0xAA, 0xBB, 0x33);
    private final static Font labelFont = new Font("SanSerif", Font.BOLD, 16);

    private JTextField messageTextField;
    private JButton speakButton;
    private JPanel mapPanel;
    private JPanel imagePanel;

    private ZipInfo currentInfo;
    private ZipRecognizer zipRecognizer;
    private ZipDatabase zipDB;
    private boolean continuousMode = false;

    /**
     * Constructs a ZipCity with the given title.
     *
     * @param continuousMode if true recognition is continuous
     */
    public ZipCity(boolean continuousMode) {
        super("ZipCity - a Sphinx-4 WebStart Demo");
        this.continuousMode = continuousMode;
        setSize(900, 520);
        setDefaultLookAndFeelDecorated(true);
        imagePanel = createImagePanel();
        mapPanel = createMapPanel();
        setApplicationIcon();

        getContentPane().add(imagePanel, BorderLayout.CENTER);
        getContentPane().add(createMainPanel(), BorderLayout.SOUTH);

        // exit if the window is closed

        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                if (zipRecognizer != null) {
                    zipRecognizer.shutdown();
                }
                System.exit(0);
            }
        });

        // when the 'speak' button is pressed, enable recognition
        speakButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                if (speakButton.isEnabled()) {
                    speakButton.setEnabled(false);
                    startListening();
                }
            }
        });
    }


    /**
     *  Replaces the splash s4 logo with the map
     */
    public void displayMap() {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                getContentPane().remove(imagePanel);
                getContentPane().add(mapPanel, BorderLayout.CENTER);
                speakButton.setEnabled(true);
                validate();
                repaint();
            }
        });
               
    }

    /**
     * Starts listening for zipcodes
     */
    private void startListening() {
        if (zipRecognizer.microphoneOn()) {
            setMessage("Speak a zip code ...");
        } else {
            setMessage(
            "Sorry, can't find the microphone on your computer.");
        }
    }

    /**
     * Perform any needed initializations and then enable the 'speak'
     * button, allowing recognition to proceed
     */
    public void go() {
        try {
            setMessage("Loading zip codes...");
            zipDB = new ZipDatabase();

            setMessage("Loading recognizer...(apologies to Alaska and Hawaii)");
            zipRecognizer = new ZipRecognizer();

            setMessage("Starting recognizer...");
            zipRecognizer.startup();

            zipRecognizer.addZipListener(new ZipListener() {
                public void notify(String zip) {
                    updateMap(zip);
                    if (continuousMode) {
                        zipRecognizer.microphoneOn();
                    }
                }
            });

            displayMap();
            if (continuousMode) {
                startListening();
            } else {
                setMessage("ZipCity Version 2.0 - Ready");
            }
        } catch (Throwable e) {
            setMessage("Error: " + e.getMessage());
        }
    }

    /**
     * Update the display with the new zip code information. The
     * zip info is retrieved and if available disabled on the gui
     *
     * @param zip the zip code (in the form XXXX)
     */
    private void updateMap(final String zip) {
        final ZipInfo zipInfo = zipDB.lookup(zip);
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                if (zip == null) {
                    setMessage("I didn't understand what you said");
                } else {
                    if (zipInfo == null) {
                        setMessage("Can't find " + zip  + " in the database");
                    } else {
                        String location = zipInfo.getCity() + ", " 
                            + zipInfo.getState();
                        setMessage("");
                        currentInfo = zipInfo;
                    }
                }
                mapPanel.repaint();
                speakButton.setEnabled(true);
            }
        });
    }


    /**
     * Sets the application icon. The image icon is visible when the
     * application is iconified.
     */
    private void setApplicationIcon() {
        URL url = ZipCity.class.getResource("s4.jpg");
        Image image = Toolkit.getDefaultToolkit().getImage(url);
        setIconImage(image);
    }

    /**
     * Sets the message to be displayed at the bottom of the Frame.
     *
     * @param message message to be displayed
     */
    public void setMessage(final String message) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                messageTextField.setText(message);
            }
        });
    }

    /**
     * Enables or disables the "Speak" button.
     *
     * @param enable boolean to enable or disable
     */
    public void setSpeakButtonEnabled(final boolean enabled) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                speakButton.setEnabled(enabled);
            }
        });
    }

    /**
     * Returns a JPanel with the given layout and custom background color.
     *
     * @param layout the LayoutManager to use for the returned JPanel
     *
     * @return a JPanel
     */
    private JPanel getJPanel(LayoutManager layout) {
        JPanel panel = getJPanel();
        panel.setLayout(layout);
        return panel;
    }

    /**
     * Returns a JPanel with the custom background color.
     *
     * @return a JPanel
     */
    private JPanel getJPanel() {
        JPanel panel = new JPanel();
        panel.setBackground(backgroundColor);
        return panel;
    }