git.gag.com Git - debian/freetts/blob - demo/JSAPI/Emacspeak/EmacspeakServer.java

   1 /**
   2  * Copyright 2003 Sun Microsystems, Inc.
   3  *
   4  * See the file "license.terms" for information on usage and
   5  * redistribution of this file, and for a DISCLAIMER OF ALL
   6  * WARRANTIES.
   7  */
   8 import java.io.File;
   9 import java.io.IOException;
  10 import java.net.ServerSocket;
  11 import java.net.Socket;
  12
  13 import java.util.Locale;
  14
  15 import javax.speech.Central;
  16 import javax.speech.Engine;
  17 import javax.speech.EngineException;
  18 import javax.speech.synthesis.Synthesizer;
  19 import javax.speech.synthesis.SynthesizerModeDesc;
  20 import javax.speech.synthesis.SynthesizerProperties;
  21 import javax.speech.synthesis.Voice;
  22
  23
  24 /**
  25  * Provides text-to-speech server for Emacspeak.
  26  */
  27 public class EmacspeakServer extends TTSServer {
  28
  29     // synthesizer related variables
  30     private Synthesizer synthesizer;
  31     private String voiceName;
  32     private Voice voice;
  33
  34
  35     /**
  36      * Constructs a EmacspeakServer.
  37      */
  38     public EmacspeakServer(String voiceName) {
  39         loadSynthesizer(voiceName);
  40     }
  41
  42     /**
  43      * Creates and loads the synthesizer.
  44      */
  45     private void loadSynthesizer(String voiceName) {
  46
  47         voice = new Voice(voiceName,
  48                           Voice.GENDER_DONT_CARE,
  49                           Voice.AGE_DONT_CARE,
  50                           null);
  51
  52         SynthesizerModeDesc modeDesc = new SynthesizerModeDesc(
  53             null, "general", Locale.US, null, null);
  54
  55         try {
  56             synthesizer = Central.createSynthesizer(modeDesc);
  57
  58             if (synthesizer == null) {
  59                 System.err.println(noSynthesizerMessage());
  60                 System.exit(1);
  61             }
  62
  63             synthesizer.allocate();
  64             synthesizer.resume();
  65             synthesizer.getSynthesizerProperties().setVolume(1.0f);
  66             synthesizer.getSynthesizerProperties().setVoice(voice);
  67         } catch (Exception e) {
  68             System.out.println("Error creating synthesizer");
  69             System.exit(1);
  70         }
  71     }
  72
  73
  74     /**
  75      * Returns a "no synthesizer" message, and asks
  76      * the user to check if the "speech.properties" file is
  77      * at <code>user.home</code> or <code>java.home/lib</code>.
  78      *
  79      * @return a no synthesizer message
  80      */
  81     static private String noSynthesizerMessage() {
  82         String message =
  83             "No synthesizer created.  This may be the result of any\n" +
  84             "number of problems.  It's typically due to a missing\n" +
  85             "\"speech.properties\" file that should be at either of\n" +
  86             "these locations: \n\n";
  87         message += "user.home    : " + System.getProperty("user.home") + "\n";
  88         message += "java.home/lib: " + System.getProperty("java.home") +
  89             File.separator + "lib\n\n" +
  90             "Another cause of this problem might be corrupt or missing\n" +
  91             "voice jar files in the freetts lib directory.  This problem\n" +
  92             "also sometimes arises when the freetts.jar file is corrupt\n" +
  93             "or missing.  Sorry about that.  Please check for these\n" +
  94             "various conditions and then try again.\n";
  95         return message;
  96     }
  97
  98
  99     /**
 100      * Spawns a ProtocolHandler depending on the current protocol.
 101      *
 102      * @param socket the socket that the spawned protocol handler will use
 103      */
 104     protected void spawnProtocolHandler(Socket socket) {
 105         try {
 106             JSAPIEmacspeakHandler handler =
 107                 new JSAPIEmacspeakHandler(socket, synthesizer);
 108             (new Thread(handler)).start();
 109         } catch (Exception e) {
 110             e.printStackTrace();
 111         }
 112     }
 113
 114
 115     /**
 116      * Sets the speaking rate of the voice.
 117      *
 118      * @param wpm the speaking rate (words per minute)
 119      */
 120     public void setRate(float wpm) {
 121         try {
 122             synthesizer.getSynthesizerProperties().setSpeakingRate(wpm);
 123         } catch (java.beans.PropertyVetoException e) {
 124             // ignore and do nothing
 125         }
 126     }
 127
 128
 129     /**
 130      * Starts this TTS Server.
 131      */
 132     public static void main(String[] args) {
 133         String voiceName = (args.length > 0)
 134             ? args[0]
 135             : "kevin16";
 136
 137         System.out.println();
 138         System.out.println("Using voice: " + voiceName);
 139         System.out.println();
 140
 141         EmacspeakServer server = new EmacspeakServer(voiceName);
 142
 143         if (args.length > 1) {
 144             float wpm = Float.parseFloat(args[1]);
 145             server.setRate(wpm);
 146         }
 147
 148         (new Thread(server)).start();
 149     }
 150 }